diff options
Diffstat (limited to 'gnu/usr.bin/gdb/config')
| -rw-r--r-- | gnu/usr.bin/gdb/config/Makefile.i386 | 6 | ||||
| -rw-r--r-- | gnu/usr.bin/gdb/config/default-dep.c | 585 | ||||
| -rw-r--r-- | gnu/usr.bin/gdb/config/i386-dep.c | 1275 | ||||
| -rw-r--r-- | gnu/usr.bin/gdb/config/i386-pinsn.c | 1812 | ||||
| -rw-r--r-- | gnu/usr.bin/gdb/config/i386bsd-dep.c | 1889 | ||||
| -rw-r--r-- | gnu/usr.bin/gdb/config/m-i386-sv32.h | 28 | ||||
| -rw-r--r-- | gnu/usr.bin/gdb/config/m-i386.h | 394 | ||||
| -rw-r--r-- | gnu/usr.bin/gdb/config/m-i386bsd.h | 375 | ||||
| -rw-r--r-- | gnu/usr.bin/gdb/config/m-i386g-sv32.h | 28 | ||||
| -rw-r--r-- | gnu/usr.bin/gdb/config/m-i386gas.h | 37 |
10 files changed, 0 insertions, 6429 deletions
diff --git a/gnu/usr.bin/gdb/config/Makefile.i386 b/gnu/usr.bin/gdb/config/Makefile.i386 deleted file mode 100644 index cc52aa3b13d4..000000000000 --- a/gnu/usr.bin/gdb/config/Makefile.i386 +++ /dev/null @@ -1,6 +0,0 @@ -# @(#)Makefile.i386 6.2 (Berkeley) 3/21/91 - -CONFIGSRCS= i386bsd-dep.c i386-pinsn.c - -param.h: - ln -s $(.CURDIR)/config/m-i386bsd.h param.h diff --git a/gnu/usr.bin/gdb/config/default-dep.c b/gnu/usr.bin/gdb/config/default-dep.c deleted file mode 100644 index 13fe7b95a49e..000000000000 --- a/gnu/usr.bin/gdb/config/default-dep.c +++ /dev/null @@ -1,585 +0,0 @@ -/*- - * This code is derived from software copyrighted by the Free Software - * Foundation. - * - * Modified 1991 by Donn Seeley at UUNET Technologies, Inc. - */ - -#ifndef lint -static char sccsid[] = "@(#)default-dep.c 6.3 (Berkeley) 5/8/91"; -#endif /* not lint */ - -/* Low level interface to ptrace, for GDB when running under Unix. - Copyright (C) 1988, 1989 Free Software Foundation, Inc. - -This file is part of GDB. - -GDB is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 1, or (at your option) -any later version. - -GDB is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GDB; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#include <stdio.h> -#include "defs.h" -#include "param.h" -#include "frame.h" -#include "inferior.h" - -#ifdef USG -#include <sys/types.h> -#endif - -#include <sys/param.h> -#include <sys/dir.h> -#include <signal.h> -#include <sys/ioctl.h> -/* #include <fcntl.h> Can we live without this? */ - -#ifdef COFF_ENCAPSULATE -#include "a.out.encap.h" -#else -#include <a.out.h> -#endif -#ifndef N_SET_MAGIC -#define N_SET_MAGIC(exec, val) ((exec).a_magic = (val)) -#endif - -#include <sys/user.h> /* After a.out.h */ -#include <sys/file.h> -#include <sys/stat.h> - -extern int errno; - -/* This function simply calls ptrace with the given arguments. - It exists so that all calls to ptrace are isolated in this - machine-dependent file. */ -int -call_ptrace (request, pid, arg3, arg4) - int request, pid, arg3, arg4; -{ - return ptrace (request, pid, arg3, arg4); -} - -kill_inferior () -{ - if (remote_debugging) - return; - if (inferior_pid == 0) - return; - ptrace (8, inferior_pid, 0, 0); - wait (0); - inferior_died (); -} - -/* This is used when GDB is exiting. It gives less chance of error.*/ - -kill_inferior_fast () -{ - if (remote_debugging) - return; - if (inferior_pid == 0) - return; - ptrace (8, inferior_pid, 0, 0); - wait (0); -} - -/* Resume execution of the inferior process. - If STEP is nonzero, single-step it. - If SIGNAL is nonzero, give it that signal. */ - -void -resume (step, signal) - int step; - int signal; -{ - errno = 0; - if (remote_debugging) - remote_resume (step, signal); - else - { - ptrace (step ? 9 : 7, inferior_pid, 1, signal); - if (errno) - perror_with_name ("ptrace"); - } -} - -void -fetch_inferior_registers () -{ - register int regno; - register unsigned int regaddr; - char buf[MAX_REGISTER_RAW_SIZE]; - register int i; - - struct user u; - unsigned int offset = (char *) &u.u_ar0 - (char *) &u; - offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR; - - for (regno = 0; regno < NUM_REGS; regno++) - { - regaddr = register_addr (regno, offset); - for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int)) - { - *(int *) &buf[i] = ptrace (3, inferior_pid, regaddr, 0); - regaddr += sizeof (int); - } - supply_register (regno, buf); - } -} - -/* Store our register values back into the inferior. - If REGNO is -1, do this for all registers. - Otherwise, REGNO specifies which register (so we can save time). */ - -store_inferior_registers (regno) - int regno; -{ - register unsigned int regaddr; - char buf[80]; - - struct user u; - unsigned int offset = (char *) &u.u_ar0 - (char *) &u; - offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR; - - if (regno >= 0) - { - regaddr = register_addr (regno, offset); - errno = 0; - ptrace (6, inferior_pid, regaddr, read_register (regno)); - if (errno != 0) - { - sprintf (buf, "writing register number %d", regno); - perror_with_name (buf); - } - } - else for (regno = 0; regno < NUM_REGS; regno++) - { - regaddr = register_addr (regno, offset); - errno = 0; - ptrace (6, inferior_pid, regaddr, read_register (regno)); - if (errno != 0) - { - sprintf (buf, "writing all regs, number %d", regno); - perror_with_name (buf); - } - } -} - -/* Copy LEN bytes from inferior's memory starting at MEMADDR - to debugger memory starting at MYADDR. - On failure (cannot read from inferior, usually because address is out - of bounds) returns the value of errno. */ - -int -read_inferior_memory (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - register int i; - /* Round starting address down to longword boundary. */ - register CORE_ADDR addr = memaddr & - sizeof (int); - /* Round ending address up; get number of longwords that makes. */ - register int count - = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int); - /* Allocate buffer of that many longwords. */ - register int *buffer = (int *) alloca (count * sizeof (int)); - extern int errno; - - /* Read all the longwords */ - for (i = 0; i < count; i++, addr += sizeof (int)) - { - errno = 0; -#if 0 - /* This is now done by read_memory, because when this function did it, - reading a byte or short int hardware port read whole longs, causing - serious side effects - such as bus errors and unexpected hardware operation. This would - also be a problem with ptrace if the inferior process could read - or write hardware registers, but that's not usually the case. */ - if (remote_debugging) - buffer[i] = remote_fetch_word (addr); - else -#endif - buffer[i] = ptrace (1, inferior_pid, addr, 0); - if (errno) - return errno; - } - - /* Copy appropriate bytes out of the buffer. */ - bcopy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len); - return 0; -} - -/* Copy LEN bytes of data from debugger memory at MYADDR - to inferior's memory at MEMADDR. - On failure (cannot write the inferior) - returns the value of errno. */ - -int -write_inferior_memory (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - register int i; - /* Round starting address down to longword boundary. */ - register CORE_ADDR addr = memaddr & - sizeof (int); - /* Round ending address up; get number of longwords that makes. */ - register int count - = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int); - /* Allocate buffer of that many longwords. */ - register int *buffer = (int *) alloca (count * sizeof (int)); - extern int errno; - - /* Fill start and end extra bytes of buffer with existing memory data. */ - - if (remote_debugging) - return (remote_write_inferior_memory(memaddr, myaddr, len)); - - buffer[0] = ptrace (1, inferior_pid, addr, 0); - - if (count > 1) - buffer[count - 1] = ptrace (1, inferior_pid, - addr + (count - 1) * sizeof (int), 0); - - /* Copy data to be written over corresponding part of buffer */ - - bcopy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len); - - /* Write the entire buffer. */ - - for (i = 0; i < count; i++, addr += sizeof (int)) - { - errno = 0; - ptrace (4, inferior_pid, addr, buffer[i]); - if (errno) - return errno; - } - - return 0; -} - -/* Work with core dump and executable files, for GDB. - This code would be in core.c if it weren't machine-dependent. */ - -#ifndef N_TXTADDR -#define N_TXTADDR(hdr) 0 -#endif /* no N_TXTADDR */ - -#ifndef N_DATADDR -#define N_DATADDR(hdr) hdr.a_text -#endif /* no N_DATADDR */ - -/* Make COFF and non-COFF names for things a little more compatible - to reduce conditionals later. */ - -#ifdef COFF_FORMAT -#define a_magic magic -#endif - -#ifndef COFF_FORMAT -#ifndef AOUTHDR -#define AOUTHDR struct exec -#endif -#endif - -extern char *sys_siglist[]; - - -/* Hook for `exec_file_command' command to call. */ - -extern void (*exec_file_display_hook) (); - -/* File names of core file and executable file. */ - -extern char *corefile; -extern char *execfile; - -/* Descriptors on which core file and executable file are open. - Note that the execchan is closed when an inferior is created - and reopened if the inferior dies or is killed. */ - -extern int corechan; -extern int execchan; - -/* Last modification time of executable file. - Also used in source.c to compare against mtime of a source file. */ - -extern int exec_mtime; - -/* Virtual addresses of bounds of the two areas of memory in the core file. */ - -extern CORE_ADDR data_start; -extern CORE_ADDR data_end; -extern CORE_ADDR stack_start; -extern CORE_ADDR stack_end; - -/* Virtual addresses of bounds of two areas of memory in the exec file. - Note that the data area in the exec file is used only when there is no core file. */ - -extern CORE_ADDR text_start; -extern CORE_ADDR text_end; - -extern CORE_ADDR exec_data_start; -extern CORE_ADDR exec_data_end; - -/* Address in executable file of start of text area data. */ - -extern int text_offset; - -/* Address in executable file of start of data area data. */ - -extern int exec_data_offset; - -/* Address in core file of start of data area data. */ - -extern int data_offset; - -/* Address in core file of start of stack area data. */ - -extern int stack_offset; - -#ifdef COFF_FORMAT -/* various coff data structures */ - -extern FILHDR file_hdr; -extern SCNHDR text_hdr; -extern SCNHDR data_hdr; - -#endif /* not COFF_FORMAT */ - -/* a.out header saved in core file. */ - -extern AOUTHDR core_aouthdr; - -/* a.out header of exec file. */ - -extern AOUTHDR exec_aouthdr; - -extern void validate_files (); - -core_file_command (filename, from_tty) - char *filename; - int from_tty; -{ - int val; - extern char registers[]; - - /* Discard all vestiges of any previous core file - and mark data and stack spaces as empty. */ - - if (corefile) - free (corefile); - corefile = 0; - - if (corechan >= 0) - close (corechan); - corechan = -1; - - data_start = 0; - data_end = 0; - stack_start = STACK_END_ADDR; - stack_end = STACK_END_ADDR; - - /* Now, if a new core file was specified, open it and digest it. */ - - if (filename) - { - filename = tilde_expand (filename); - make_cleanup (free, filename); - - if (have_inferior_p ()) - error ("To look at a core file, you must kill the inferior with \"kill\"."); - corechan = open (filename, O_RDONLY, 0); - if (corechan < 0) - perror_with_name (filename); - /* 4.2-style (and perhaps also sysV-style) core dump file. */ - { - struct user u; - - unsigned int reg_offset; - - val = myread (corechan, &u, sizeof u); - if (val < 0) - perror_with_name ("Not a core file: reading upage"); - if (val != sizeof u) - error ("Not a core file: could only read %d bytes", val); - - /* We are depending on exec_file_command having been called - previously to set exec_data_start. Since the executable - and the core file share the same text segment, the address - of the data segment will be the same in both. */ - data_start = exec_data_start; - - data_end = data_start + NBPG * u.u_dsize; - stack_start = stack_end - NBPG * u.u_ssize; - data_offset = NBPG * UPAGES; - stack_offset = NBPG * (UPAGES + u.u_dsize); - - /* Some machines put an absolute address in here and some put - the offset in the upage of the regs. */ - reg_offset = (int) u.u_ar0; - if (reg_offset > NBPG * UPAGES) - reg_offset -= KERNEL_U_ADDR; - - /* I don't know where to find this info. - So, for now, mark it as not available. */ - N_SET_MAGIC (core_aouthdr, 0); - - /* Read the register values out of the core file and store - them where `read_register' will find them. */ - - { - register int regno; - - for (regno = 0; regno < NUM_REGS; regno++) - { - char buf[MAX_REGISTER_RAW_SIZE]; - - val = lseek (corechan, register_addr (regno, reg_offset), 0); - if (val < 0 - || (val = myread (corechan, buf, sizeof buf)) < 0) - { - char * buffer = (char *) alloca (strlen (reg_names[regno]) - + 30); - strcpy (buffer, "Reading register "); - strcat (buffer, reg_names[regno]); - - perror_with_name (buffer); - } - - supply_register (regno, buf); - } - } - } - if (filename[0] == '/') - corefile = savestring (filename, strlen (filename)); - else - { - corefile = concat (current_directory, "/", filename); - } - - set_current_frame ( create_new_frame (read_register (FP_REGNUM), - read_pc ())); - select_frame (get_current_frame (), 0); - validate_files (); - } - else if (from_tty) - printf ("No core file now.\n"); -} - -exec_file_command (filename, from_tty) - char *filename; - int from_tty; -{ - int val; - - /* Eliminate all traces of old exec file. - Mark text segment as empty. */ - - if (execfile) - free (execfile); - execfile = 0; - data_start = 0; - data_end -= exec_data_start; - text_start = 0; - text_end = 0; - exec_data_start = 0; - exec_data_end = 0; - if (execchan >= 0) - close (execchan); - execchan = -1; - - /* Now open and digest the file the user requested, if any. */ - - if (filename) - { - filename = tilde_expand (filename); - make_cleanup (free, filename); - - execchan = openp (getenv ("PATH"), 1, filename, O_RDONLY, 0, - &execfile); - if (execchan < 0) - perror_with_name (filename); - -#ifdef COFF_FORMAT - { - int aout_hdrsize; - int num_sections; - - if (read_file_hdr (execchan, &file_hdr) < 0) - error ("\"%s\": not in executable format.", execfile); - - aout_hdrsize = file_hdr.f_opthdr; - num_sections = file_hdr.f_nscns; - - if (read_aout_hdr (execchan, &exec_aouthdr, aout_hdrsize) < 0) - error ("\"%s\": can't read optional aouthdr", execfile); - - if (read_section_hdr (execchan, _TEXT, &text_hdr, num_sections, - aout_hdrsize) < 0) - error ("\"%s\": can't read text section header", execfile); - - if (read_section_hdr (execchan, _DATA, &data_hdr, num_sections, - aout_hdrsize) < 0) - error ("\"%s\": can't read data section header", execfile); - - text_start = exec_aouthdr.text_start; - text_end = text_start + exec_aouthdr.tsize; - text_offset = text_hdr.s_scnptr; - exec_data_start = exec_aouthdr.data_start; - exec_data_end = exec_data_start + exec_aouthdr.dsize; - exec_data_offset = data_hdr.s_scnptr; - data_start = exec_data_start; - data_end += exec_data_start; - exec_mtime = file_hdr.f_timdat; - } -#else /* not COFF_FORMAT */ - { - struct stat st_exec; - -#ifdef HEADER_SEEK_FD - HEADER_SEEK_FD (execchan); -#endif - - val = myread (execchan, &exec_aouthdr, sizeof (AOUTHDR)); - - if (val < 0) - perror_with_name (filename); - - text_start = N_TXTADDR (exec_aouthdr); - exec_data_start = N_DATADDR (exec_aouthdr); - - text_offset = N_TXTOFF (exec_aouthdr); - exec_data_offset = N_TXTOFF (exec_aouthdr) + exec_aouthdr.a_text; - - text_end = text_start + exec_aouthdr.a_text; - exec_data_end = exec_data_start + exec_aouthdr.a_data; - data_start = exec_data_start; - data_end += exec_data_start; - - if (fstat (execchan, &st_exec) < 0) - perror_with_name (filename); - exec_mtime = st_exec.st_mtime; - } -#endif /* not COFF_FORMAT */ - - validate_files (); - } - else if (from_tty) - printf ("No exec file now.\n"); - - /* Tell display code (if any) about the changed file name. */ - if (exec_file_display_hook) - (*exec_file_display_hook) (filename); -} diff --git a/gnu/usr.bin/gdb/config/i386-dep.c b/gnu/usr.bin/gdb/config/i386-dep.c deleted file mode 100644 index c4630d0c07ac..000000000000 --- a/gnu/usr.bin/gdb/config/i386-dep.c +++ /dev/null @@ -1,1275 +0,0 @@ -/* Low level interface to ptrace, for GDB when running on the Intel 386. - Copyright (C) 1988, 1989 Free Software Foundation, Inc. - -This file is part of GDB. - -GDB is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 1, or (at your option) -any later version. - -GDB is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GDB; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#include <stdio.h> -#include "defs.h" -#include "param.h" -#include "frame.h" -#include "inferior.h" - -#ifdef USG -#include <sys/types.h> -#endif - -#include <sys/param.h> -#include <sys/dir.h> -#include <signal.h> -#include <sys/user.h> -#include <sys/ioctl.h> -#include <fcntl.h> - -#ifdef COFF_ENCAPSULATE -#include "a.out.encap.h" -#else -#include <a.out.h> -#endif - -#ifndef N_SET_MAGIC -#ifdef COFF_FORMAT -#define N_SET_MAGIC(exec, val) ((exec).magic = (val)) -#else -#define N_SET_MAGIC(exec, val) ((exec).a_magic = (val)) -#endif -#endif - -#include <sys/file.h> -#include <sys/stat.h> - -#include <sys/reg.h> - -extern int errno; - -/* This function simply calls ptrace with the given arguments. - It exists so that all calls to ptrace are isolated in this - machine-dependent file. */ -int -call_ptrace (request, pid, arg3, arg4) - int request, pid, arg3, arg4; -{ - return ptrace (request, pid, arg3, arg4); -} - -kill_inferior () -{ - if (remote_debugging) - return; - if (inferior_pid == 0) - return; - ptrace (8, inferior_pid, 0, 0); - wait (0); - inferior_died (); -} - -/* This is used when GDB is exiting. It gives less chance of error.*/ - -kill_inferior_fast () -{ - if (remote_debugging) - return; - if (inferior_pid == 0) - return; - ptrace (8, inferior_pid, 0, 0); - wait (0); -} - -/* Resume execution of the inferior process. - If STEP is nonzero, single-step it. - If SIGNAL is nonzero, give it that signal. */ - -void -resume (step, signal) - int step; - int signal; -{ - errno = 0; - if (remote_debugging) - remote_resume (step, signal); - else - { - ptrace (step ? 9 : 7, inferior_pid, 1, signal); - if (errno) - perror_with_name ("ptrace"); - } -} - -void -fetch_inferior_registers () -{ - register int regno; - register unsigned int regaddr; - char buf[MAX_REGISTER_RAW_SIZE]; - register int i; - - struct user u; - unsigned int offset = (char *) &u.u_ar0 - (char *) &u; - offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR; - - for (regno = 0; regno < NUM_REGS; regno++) - { - regaddr = register_addr (regno, offset); - for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int)) - { - *(int *) &buf[i] = ptrace (3, inferior_pid, regaddr, 0); - regaddr += sizeof (int); - } - supply_register (regno, buf); - } -} - -/* Store our register values back into the inferior. - If REGNO is -1, do this for all registers. - Otherwise, REGNO specifies which register (so we can save time). */ - -store_inferior_registers (regno) - int regno; -{ - register unsigned int regaddr; - char buf[80]; - - struct user u; - unsigned int offset = (char *) &u.u_ar0 - (char *) &u; - offset = ptrace (3, inferior_pid, offset, 0) - KERNEL_U_ADDR; - - if (regno >= 0) - { - regaddr = register_addr (regno, offset); - errno = 0; - ptrace (6, inferior_pid, regaddr, read_register (regno)); - if (errno != 0) - { - sprintf (buf, "writing register number %d", regno); - perror_with_name (buf); - } - } - else for (regno = 0; regno < NUM_REGS; regno++) - { - regaddr = register_addr (regno, offset); - errno = 0; - ptrace (6, inferior_pid, regaddr, read_register (regno)); - if (errno != 0) - { - sprintf (buf, "writing register number %d", regno); - perror_with_name (buf); - } - } -} - -/* Copy LEN bytes from inferior's memory starting at MEMADDR - to debugger memory starting at MYADDR. - On failure (cannot read from inferior, usually because address is out - of bounds) returns the value of errno. */ - -int -read_inferior_memory (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - register int i; - /* Round starting address down to longword boundary. */ - register CORE_ADDR addr = memaddr & - sizeof (int); - /* Round ending address up; get number of longwords that makes. */ - register int count - = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int); - /* Allocate buffer of that many longwords. */ - register int *buffer = (int *) alloca (count * sizeof (int)); - extern int errno; - - /* Read all the longwords */ - for (i = 0; i < count; i++, addr += sizeof (int)) - { - errno = 0; - if (remote_debugging) - buffer[i] = remote_fetch_word (addr); - else - buffer[i] = ptrace (1, inferior_pid, addr, 0); - if (errno) - return errno; - } - - /* Copy appropriate bytes out of the buffer. */ - bcopy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len); - return 0; -} - -/* Copy LEN bytes of data from debugger memory at MYADDR - to inferior's memory at MEMADDR. - On failure (cannot write the inferior) - returns the value of errno. */ - -int -write_inferior_memory (memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - register int i; - /* Round starting address down to longword boundary. */ - register CORE_ADDR addr = memaddr & - sizeof (int); - /* Round ending address up; get number of longwords that makes. */ - register int count - = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int); - /* Allocate buffer of that many longwords. */ - register int *buffer = (int *) alloca (count * sizeof (int)); - extern int errno; - - /* Fill start and end extra bytes of buffer with existing memory data. */ - - if (remote_debugging) - buffer[0] = remote_fetch_word (addr); - else - buffer[0] = ptrace (1, inferior_pid, addr, 0); - - if (count > 1) - { - if (remote_debugging) - buffer[count - 1] - = remote_fetch_word (addr + (count - 1) * sizeof (int)); - else - buffer[count - 1] - = ptrace (1, inferior_pid, - addr + (count - 1) * sizeof (int), 0); - } - - /* Copy data to be written over corresponding part of buffer */ - - bcopy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len); - - /* Write the entire buffer. */ - - for (i = 0; i < count; i++, addr += sizeof (int)) - { - errno = 0; - if (remote_debugging) - remote_store_word (addr, buffer[i]); - else - ptrace (4, inferior_pid, addr, buffer[i]); - if (errno) - return errno; - } - - return 0; -} - -/* Work with core dump and executable files, for GDB. - This code would be in core.c if it weren't machine-dependent. */ - -#ifndef N_TXTADDR -#define N_TXTADDR(hdr) 0 -#endif /* no N_TXTADDR */ - -#ifndef N_DATADDR -#define N_DATADDR(hdr) hdr.a_text -#endif /* no N_DATADDR */ - -/* Make COFF and non-COFF names for things a little more compatible - to reduce conditionals later. */ - -#ifndef COFF_FORMAT -#ifndef AOUTHDR -#define AOUTHDR struct exec -#endif -#endif - -extern char *sys_siglist[]; - - -/* Hook for `exec_file_command' command to call. */ - -extern void (*exec_file_display_hook) (); - -/* File names of core file and executable file. */ - -extern char *corefile; -extern char *execfile; - -/* Descriptors on which core file and executable file are open. - Note that the execchan is closed when an inferior is created - and reopened if the inferior dies or is killed. */ - -extern int corechan; -extern int execchan; - -/* Last modification time of executable file. - Also used in source.c to compare against mtime of a source file. */ - -extern int exec_mtime; - -/* Virtual addresses of bounds of the two areas of memory in the core file. */ - -extern CORE_ADDR data_start; -extern CORE_ADDR data_end; -extern CORE_ADDR stack_start; -extern CORE_ADDR stack_end; - -/* Virtual addresses of bounds of two areas of memory in the exec file. - Note that the data area in the exec file is used only when there is no core file. */ - -extern CORE_ADDR text_start; -extern CORE_ADDR text_end; - -extern CORE_ADDR exec_data_start; -extern CORE_ADDR exec_data_end; - -/* Address in executable file of start of text area data. */ - -extern int text_offset; - -/* Address in executable file of start of data area data. */ - -extern int exec_data_offset; - -/* Address in core file of start of data area data. */ - -extern int data_offset; - -/* Address in core file of start of stack area data. */ - -extern int stack_offset; - -#ifdef COFF_FORMAT -/* various coff data structures */ - -extern FILHDR file_hdr; -extern SCNHDR text_hdr; -extern SCNHDR data_hdr; - -#endif /* not COFF_FORMAT */ - -/* a.out header saved in core file. */ - -extern AOUTHDR core_aouthdr; - -/* a.out header of exec file. */ - -extern AOUTHDR exec_aouthdr; - -extern void validate_files (); - -core_file_command (filename, from_tty) - char *filename; - int from_tty; -{ - int val; - extern char registers[]; - - /* Discard all vestiges of any previous core file - and mark data and stack spaces as empty. */ - - if (corefile) - free (corefile); - corefile = 0; - - if (corechan >= 0) - close (corechan); - corechan = -1; - - data_start = 0; - data_end = 0; - stack_start = STACK_END_ADDR; - stack_end = STACK_END_ADDR; - - /* Now, if a new core file was specified, open it and digest it. */ - - if (filename) - { - filename = tilde_expand (filename); - make_cleanup (free, filename); - - if (have_inferior_p ()) - error ("To look at a core file, you must kill the inferior with \"kill\"."); - corechan = open (filename, O_RDONLY, 0); - if (corechan < 0) - perror_with_name (filename); - /* 4.2-style (and perhaps also sysV-style) core dump file. */ - { - struct user u; - - int reg_offset; - - val = myread (corechan, &u, sizeof u); - if (val < 0) - perror_with_name (filename); - data_start = exec_data_start; - - data_end = data_start + NBPG * u.u_dsize; - stack_start = stack_end - NBPG * u.u_ssize; - data_offset = NBPG * UPAGES; - stack_offset = NBPG * (UPAGES + u.u_dsize); - reg_offset = (int) u.u_ar0 - KERNEL_U_ADDR; - - /* I don't know where to find this info. - So, for now, mark it as not available. */ -/* N_SET_MAGIC (core_aouthdr, 0); */ - bzero ((char *) &core_aouthdr, sizeof core_aouthdr); - - /* Read the register values out of the core file and store - them where `read_register' will find them. */ - - { - register int regno; - - for (regno = 0; regno < NUM_REGS; regno++) - { - char buf[MAX_REGISTER_RAW_SIZE]; - - val = lseek (corechan, register_addr (regno, reg_offset), 0); - if (val < 0) - perror_with_name (filename); - - val = myread (corechan, buf, sizeof buf); - if (val < 0) - perror_with_name (filename); - supply_register (regno, buf); - } - } - } - if (filename[0] == '/') - corefile = savestring (filename, strlen (filename)); - else - { - corefile = concat (current_directory, "/", filename); - } - - set_current_frame ( create_new_frame (read_register (FP_REGNUM), - read_pc ())); - select_frame (get_current_frame (), 0); - validate_files (); - } - else if (from_tty) - printf ("No core file now.\n"); -} - -exec_file_command (filename, from_tty) - char *filename; - int from_tty; -{ - int val; - - /* Eliminate all traces of old exec file. - Mark text segment as empty. */ - - if (execfile) - free (execfile); - execfile = 0; - data_start = 0; - data_end -= exec_data_start; - text_start = 0; - text_end = 0; - exec_data_start = 0; - exec_data_end = 0; - if (execchan >= 0) - close (execchan); - execchan = -1; - - /* Now open and digest the file the user requested, if any. */ - - if (filename) - { - filename = tilde_expand (filename); - make_cleanup (free, filename); - - execchan = openp (getenv ("PATH"), 1, filename, O_RDONLY, 0, - &execfile); - if (execchan < 0) - perror_with_name (filename); - -#ifdef COFF_FORMAT - { - int aout_hdrsize; - int num_sections; - - if (read_file_hdr (execchan, &file_hdr) < 0) - error ("\"%s\": not in executable format.", execfile); - - aout_hdrsize = file_hdr.f_opthdr; - num_sections = file_hdr.f_nscns; - - if (read_aout_hdr (execchan, &exec_aouthdr, aout_hdrsize) < 0) - error ("\"%s\": can't read optional aouthdr", execfile); - - if (read_section_hdr (execchan, _TEXT, &text_hdr, num_sections, - aout_hdrsize) < 0) - error ("\"%s\": can't read text section header", execfile); - - if (read_section_hdr (execchan, _DATA, &data_hdr, num_sections, - aout_hdrsize) < 0) - error ("\"%s\": can't read data section header", execfile); - - text_start = exec_aouthdr.text_start; - text_end = text_start + exec_aouthdr.tsize; - text_offset = text_hdr.s_scnptr; - exec_data_start = exec_aouthdr.data_start; - exec_data_end = exec_data_start + exec_aouthdr.dsize; - exec_data_offset = data_hdr.s_scnptr; - data_start = exec_data_start; - data_end += exec_data_start; - exec_mtime = file_hdr.f_timdat; - } -#else /* not COFF_FORMAT */ - { - struct stat st_exec; - -#ifdef HEADER_SEEK_FD - HEADER_SEEK_FD (execchan); -#endif - - val = myread (execchan, &exec_aouthdr, sizeof (AOUTHDR)); - - if (val < 0) - perror_with_name (filename); - - text_start = N_TXTADDR (exec_aouthdr); - exec_data_start = N_DATADDR (exec_aouthdr); - - text_offset = N_TXTOFF (exec_aouthdr); - exec_data_offset = N_TXTOFF (exec_aouthdr) + exec_aouthdr.a_text; - - text_end = text_start + exec_aouthdr.a_text; - exec_data_end = exec_data_start + exec_aouthdr.a_data; - data_start = exec_data_start; - data_end += exec_data_start; - - fstat (execchan, &st_exec); - exec_mtime = st_exec.st_mtime; - } -#endif /* not COFF_FORMAT */ - - validate_files (); - } - else if (from_tty) - printf ("No exec file now.\n"); - - /* Tell display code (if any) about the changed file name. */ - if (exec_file_display_hook) - (*exec_file_display_hook) (filename); -} - -/* helper functions for m-i386.h */ - -/* stdio style buffering to minimize calls to ptrace */ -static CORE_ADDR codestream_next_addr; -static CORE_ADDR codestream_addr; -static unsigned char codestream_buf[sizeof (int)]; -static int codestream_off; -static int codestream_cnt; - -#define codestream_tell() (codestream_addr + codestream_off) -#define codestream_peek() (codestream_cnt == 0 ? \ - codestream_fill(1): codestream_buf[codestream_off]) -#define codestream_get() (codestream_cnt-- == 0 ? \ - codestream_fill(0) : codestream_buf[codestream_off++]) - -static unsigned char -codestream_fill (peek_flag) -{ - codestream_addr = codestream_next_addr; - codestream_next_addr += sizeof (int); - codestream_off = 0; - codestream_cnt = sizeof (int); - read_memory (codestream_addr, - (unsigned char *)codestream_buf, - sizeof (int)); - - if (peek_flag) - return (codestream_peek()); - else - return (codestream_get()); -} - -static void -codestream_seek (place) -{ - codestream_next_addr = place & -sizeof (int); - codestream_cnt = 0; - codestream_fill (1); - while (codestream_tell() != place) - codestream_get (); -} - -static void -codestream_read (buf, count) - unsigned char *buf; -{ - unsigned char *p; - int i; - p = buf; - for (i = 0; i < count; i++) - *p++ = codestream_get (); -} - -/* next instruction is a jump, move to target */ -static -i386_follow_jump () -{ - int long_delta; - short short_delta; - char byte_delta; - int data16; - int pos; - - pos = codestream_tell (); - - data16 = 0; - if (codestream_peek () == 0x66) - { - codestream_get (); - data16 = 1; - } - - switch (codestream_get ()) - { - case 0xe9: - /* relative jump: if data16 == 0, disp32, else disp16 */ - if (data16) - { - codestream_read ((unsigned char *)&short_delta, 2); - pos += short_delta + 3; /* include size of jmp inst */ - } - else - { - codestream_read ((unsigned char *)&long_delta, 4); - pos += long_delta + 5; - } - break; - case 0xeb: - /* relative jump, disp8 (ignore data16) */ - codestream_read ((unsigned char *)&byte_delta, 1); - pos += byte_delta + 2; - break; - } - codestream_seek (pos + data16); -} - -/* - * find & return amound a local space allocated, and advance codestream to - * first register push (if any) - * - * if entry sequence doesn't make sense, return -1, and leave - * codestream pointer random - */ -static long -i386_get_frame_setup (pc) -{ - unsigned char op; - - codestream_seek (pc); - - i386_follow_jump (); - - op = codestream_get (); - - if (op == 0x58) /* popl %eax */ - { - /* - * this function must start with - * - * popl %eax 0x58 - * xchgl %eax, (%esp) 0x87 0x04 0x24 - * or xchgl %eax, 0(%esp) 0x87 0x44 0x24 0x00 - * - * (the system 5 compiler puts out the second xchg - * inst, and the assembler doesn't try to optimize it, - * so the 'sib' form gets generated) - * - * this sequence is used to get the address of the return - * buffer for a function that returns a structure - */ - int pos; - unsigned char buf[4]; - static unsigned char proto1[3] = { 0x87,0x04,0x24 }; - static unsigned char proto2[4] = { 0x87,0x44,0x24,0x00 }; - pos = codestream_tell (); - codestream_read (buf, 4); - if (bcmp (buf, proto1, 3) == 0) - pos += 3; - else if (bcmp (buf, proto2, 4) == 0) - pos += 4; - - codestream_seek (pos); - op = codestream_get (); /* update next opcode */ - } - - if (op == 0x55) /* pushl %esp */ - { - /* check for movl %esp, %ebp - can be written two ways */ - switch (codestream_get ()) - { - case 0x8b: - if (codestream_get () != 0xec) - return (-1); - break; - case 0x89: - if (codestream_get () != 0xe5) - return (-1); - break; - default: - return (-1); - } - /* check for stack adjustment - * - * subl $XXX, %esp - * - * note: you can't subtract a 16 bit immediate - * from a 32 bit reg, so we don't have to worry - * about a data16 prefix - */ - op = codestream_peek (); - if (op == 0x83) - { - /* subl with 8 bit immed */ - codestream_get (); - if (codestream_get () != 0xec) - return (-1); - /* subl with signed byte immediate - * (though it wouldn't make sense to be negative) - */ - return (codestream_get()); - } - else if (op == 0x81) - { - /* subl with 32 bit immed */ - int locals; - codestream_get(); - if (codestream_get () != 0xec) - return (-1); - /* subl with 32 bit immediate */ - codestream_read ((unsigned char *)&locals, 4); - return (locals); - } - else - { - return (0); - } - } - else if (op == 0xc8) - { - /* enter instruction: arg is 16 bit unsigned immed */ - unsigned short slocals; - codestream_read ((unsigned char *)&slocals, 2); - codestream_get (); /* flush final byte of enter instruction */ - return (slocals); - } - return (-1); -} - -/* Return number of args passed to a frame. - Can return -1, meaning no way to tell. */ - -/* on the 386, the instruction following the call could be: - * popl %ecx - one arg - * addl $imm, %esp - imm/4 args; imm may be 8 or 32 bits - * anything else - zero args - */ - -int -i386_frame_num_args (fi) - struct frame_info fi; -{ - int retpc; - unsigned char op; - struct frame_info *pfi; - - pfi = get_prev_frame_info ((fi)); - if (pfi == 0) - { - /* Note: this can happen if we are looking at the frame for - main, because FRAME_CHAIN_VALID won't let us go into - start. If we have debugging symbols, that's not really - a big deal; it just means it will only show as many arguments - to main as are declared. */ - return -1; - } - else - { - retpc = pfi->pc; - op = read_memory_integer (retpc, 1); - if (op == 0x59) - /* pop %ecx */ - return 1; - else if (op == 0x83) - { - op = read_memory_integer (retpc+1, 1); - if (op == 0xc4) - /* addl $<signed imm 8 bits>, %esp */ - return (read_memory_integer (retpc+2,1)&0xff)/4; - else - return 0; - } - else if (op == 0x81) - { /* add with 32 bit immediate */ - op = read_memory_integer (retpc+1, 1); - if (op == 0xc4) - /* addl $<imm 32>, %esp */ - return read_memory_integer (retpc+2, 4) / 4; - else - return 0; - } - else - { - return 0; - } - } -} - -/* - * parse the first few instructions of the function to see - * what registers were stored. - * - * We handle these cases: - * - * The startup sequence can be at the start of the function, - * or the function can start with a branch to startup code at the end. - * - * %ebp can be set up with either the 'enter' instruction, or - * 'pushl %ebp, movl %esp, %ebp' (enter is too slow to be useful, - * but was once used in the sys5 compiler) - * - * Local space is allocated just below the saved %ebp by either the - * 'enter' instruction, or by 'subl $<size>, %esp'. 'enter' has - * a 16 bit unsigned argument for space to allocate, and the - * 'addl' instruction could have either a signed byte, or - * 32 bit immediate. - * - * Next, the registers used by this function are pushed. In - * the sys5 compiler they will always be in the order: %edi, %esi, %ebx - * (and sometimes a harmless bug causes it to also save but not restore %eax); - * however, the code below is willing to see the pushes in any order, - * and will handle up to 8 of them. - * - * If the setup sequence is at the end of the function, then the - * next instruction will be a branch back to the start. - */ - -i386_frame_find_saved_regs (fip, fsrp) - struct frame_info *fip; - struct frame_saved_regs *fsrp; -{ - unsigned long locals; - unsigned char *p; - unsigned char op; - CORE_ADDR dummy_bottom; - CORE_ADDR adr; - int i; - - bzero (fsrp, sizeof *fsrp); - - /* if frame is the end of a dummy, compute where the - * beginning would be - */ - dummy_bottom = fip->frame - 4 - NUM_REGS*4 - CALL_DUMMY_LENGTH; - - /* check if the PC is in the stack, in a dummy frame */ - if (dummy_bottom <= fip->pc && fip->pc <= fip->frame) - { - /* all regs were saved by push_call_dummy () */ - adr = fip->frame - 4; - for (i = 0; i < NUM_REGS; i++) - { - fsrp->regs[i] = adr; - adr -= 4; - } - return; - } - - locals = i386_get_frame_setup (get_pc_function_start (fip->pc)); - - if (locals >= 0) - { - adr = fip->frame - 4 - locals; - for (i = 0; i < 8; i++) - { - op = codestream_get (); - if (op < 0x50 || op > 0x57) - break; - fsrp->regs[op - 0x50] = adr; - adr -= 4; - } - } - - fsrp->regs[PC_REGNUM] = fip->frame + 4; - fsrp->regs[FP_REGNUM] = fip->frame; -} - -/* return pc of first real instruction */ -i386_skip_prologue (pc) -{ - unsigned char op; - int i; - - if (i386_get_frame_setup (pc) < 0) - return (pc); - - /* found valid frame setup - codestream now points to - * start of push instructions for saving registers - */ - - /* skip over register saves */ - for (i = 0; i < 8; i++) - { - op = codestream_peek (); - /* break if not pushl inst */ - if (op < 0x50 || op > 0x57) - break; - codestream_get (); - } - - i386_follow_jump (); - - return (codestream_tell ()); -} - -i386_push_dummy_frame () -{ - CORE_ADDR sp = read_register (SP_REGNUM); - int regnum; - - sp = push_word (sp, read_register (PC_REGNUM)); - sp = push_word (sp, read_register (FP_REGNUM)); - write_register (FP_REGNUM, sp); - for (regnum = 0; regnum < NUM_REGS; regnum++) - sp = push_word (sp, read_register (regnum)); - write_register (SP_REGNUM, sp); -} - -i386_pop_frame () -{ - FRAME frame = get_current_frame (); - CORE_ADDR fp; - int regnum; - struct frame_saved_regs fsr; - struct frame_info *fi; - - fi = get_frame_info (frame); - fp = fi->frame; - get_frame_saved_regs (fi, &fsr); - for (regnum = 0; regnum < NUM_REGS; regnum++) - { - CORE_ADDR adr; - adr = fsr.regs[regnum]; - if (adr) - write_register (regnum, read_memory_integer (adr, 4)); - } - write_register (FP_REGNUM, read_memory_integer (fp, 4)); - write_register (PC_REGNUM, read_memory_integer (fp + 4, 4)); - write_register (SP_REGNUM, fp + 8); - flush_cached_frames (); - set_current_frame ( create_new_frame (read_register (FP_REGNUM), - read_pc ())); -} - -/* this table must line up with REGISTER_NAMES in m-i386.h */ -/* symbols like 'EAX' come from <sys/reg.h> */ -static int regmap[] = -{ - EAX, ECX, EDX, EBX, - UESP, EBP, ESI, EDI, - EIP, EFL, CS, SS, - DS, ES, FS, GS, -}; - -/* blockend is the value of u.u_ar0, and points to the - * place where GS is stored - */ -i386_register_u_addr (blockend, regnum) -{ -#if 0 - /* this will be needed if fp registers are reinstated */ - /* for now, you can look at them with 'info float' - * sys5 wont let you change them with ptrace anyway - */ - if (regnum >= FP0_REGNUM && regnum <= FP7_REGNUM) - { - int ubase, fpstate; - struct user u; - ubase = blockend + 4 * (SS + 1) - KSTKSZ; - fpstate = ubase + ((char *)&u.u_fpstate - (char *)&u); - return (fpstate + 0x1c + 10 * (regnum - FP0_REGNUM)); - } - else -#endif - return (blockend + 4 * regmap[regnum]); - -} - -i387_to_double (from, to) - char *from; - char *to; -{ - long *lp; - /* push extended mode on 387 stack, then pop in double mode - * - * first, set exception masks so no error is generated - - * number will be rounded to inf or 0, if necessary - */ - asm ("pushl %eax"); /* grab a stack slot */ - asm ("fstcw (%esp)"); /* get 387 control word */ - asm ("movl (%esp),%eax"); /* save old value */ - asm ("orl $0x3f,%eax"); /* mask all exceptions */ - asm ("pushl %eax"); - asm ("fldcw (%esp)"); /* load new value into 387 */ - - asm ("movl 8(%ebp),%eax"); - asm ("fldt (%eax)"); /* push extended number on 387 stack */ - asm ("fwait"); - asm ("movl 12(%ebp),%eax"); - asm ("fstpl (%eax)"); /* pop double */ - asm ("fwait"); - - asm ("popl %eax"); /* flush modified control word */ - asm ("fnclex"); /* clear exceptions */ - asm ("fldcw (%esp)"); /* restore original control word */ - asm ("popl %eax"); /* flush saved copy */ -} - -double_to_i387 (from, to) - char *from; - char *to; -{ - /* push double mode on 387 stack, then pop in extended mode - * no errors are possible because every 64-bit pattern - * can be converted to an extended - */ - asm ("movl 8(%ebp),%eax"); - asm ("fldl (%eax)"); - asm ("fwait"); - asm ("movl 12(%ebp),%eax"); - asm ("fstpt (%eax)"); - asm ("fwait"); -} - -struct env387 -{ - unsigned short control; - unsigned short r0; - unsigned short status; - unsigned short r1; - unsigned short tag; - unsigned short r2; - unsigned long eip; - unsigned short code_seg; - unsigned short opcode; - unsigned long operand; - unsigned short operand_seg; - unsigned short r3; - unsigned char regs[8][10]; -}; - -static -print_387_control_word (control) -unsigned short control; -{ - printf ("control 0x%04x: ", control); - printf ("compute to "); - switch ((control >> 8) & 3) - { - case 0: printf ("24 bits; "); break; - case 1: printf ("(bad); "); break; - case 2: printf ("53 bits; "); break; - case 3: printf ("64 bits; "); break; - } - printf ("round "); - switch ((control >> 10) & 3) - { - case 0: printf ("NEAREST; "); break; - case 1: printf ("DOWN; "); break; - case 2: printf ("UP; "); break; - case 3: printf ("CHOP; "); break; - } - if (control & 0x3f) - { - printf ("mask:"); - if (control & 0x0001) printf (" INVALID"); - if (control & 0x0002) printf (" DENORM"); - if (control & 0x0004) printf (" DIVZ"); - if (control & 0x0008) printf (" OVERF"); - if (control & 0x0010) printf (" UNDERF"); - if (control & 0x0020) printf (" LOS"); - printf (";"); - } - printf ("\n"); - if (control & 0xe080) printf ("warning: reserved bits on 0x%x\n", - control & 0xe080); -} - -static -print_387_status_word (status) - unsigned short status; -{ - printf ("status 0x%04x: ", status); - if (status & 0xff) - { - printf ("exceptions:"); - if (status & 0x0001) printf (" INVALID"); - if (status & 0x0002) printf (" DENORM"); - if (status & 0x0004) printf (" DIVZ"); - if (status & 0x0008) printf (" OVERF"); - if (status & 0x0010) printf (" UNDERF"); - if (status & 0x0020) printf (" LOS"); - if (status & 0x0040) printf (" FPSTACK"); - printf ("; "); - } - printf ("flags: %d%d%d%d; ", - (status & 0x4000) != 0, - (status & 0x0400) != 0, - (status & 0x0200) != 0, - (status & 0x0100) != 0); - - printf ("top %d\n", (status >> 11) & 7); -} - -static -print_387_status (status, ep) - unsigned short status; - struct env387 *ep; -{ - int i; - int bothstatus; - int top; - int fpreg; - unsigned char *p; - - bothstatus = ((status != 0) && (ep->status != 0)); - if (status != 0) - { - if (bothstatus) - printf ("u: "); - print_387_status_word (status); - } - - if (ep->status != 0) - { - if (bothstatus) - printf ("e: "); - print_387_status_word (ep->status); - } - - print_387_control_word (ep->control); - printf ("last exception: "); - printf ("opcode 0x%x; ", ep->opcode); - printf ("pc 0x%x:0x%x; ", ep->code_seg, ep->eip); - printf ("operand 0x%x:0x%x\n", ep->operand_seg, ep->operand); - - top = (ep->status >> 11) & 7; - - printf ("regno tag msb lsb value\n"); - for (fpreg = 7; fpreg >= 0; fpreg--) - { - double val; - - printf ("%s %d: ", fpreg == top ? "=>" : " ", fpreg); - - switch ((ep->tag >> (fpreg * 2)) & 3) - { - case 0: printf ("valid "); break; - case 1: printf ("zero "); break; - case 2: printf ("trap "); break; - case 3: printf ("empty "); break; - } - for (i = 9; i >= 0; i--) - printf ("%02x", ep->regs[fpreg][i]); - - i387_to_double (ep->regs[fpreg], (char *)&val); - printf (" %g\n", val); - } - if (ep->r0) - printf ("warning: reserved0 is 0x%x\n", ep->r0); - if (ep->r1) - printf ("warning: reserved1 is 0x%x\n", ep->r1); - if (ep->r2) - printf ("warning: reserved2 is 0x%x\n", ep->r2); - if (ep->r3) - printf ("warning: reserved3 is 0x%x\n", ep->r3); -} - -#ifndef U_FPSTATE -#define U_FPSTATE(u) u.u_fpstate -#endif - -i386_float_info () -{ - struct user u; /* just for address computations */ - int i; - /* fpstate defined in <sys/user.h> */ - struct fpstate *fpstatep; - char buf[sizeof (struct fpstate) + 2 * sizeof (int)]; - unsigned int uaddr; - char fpvalid; - unsigned int rounded_addr; - unsigned int rounded_size; - extern int corechan; - int skip; - - uaddr = (char *)&u.u_fpvalid - (char *)&u; - if (have_inferior_p()) - { - unsigned int data; - unsigned int mask; - - rounded_addr = uaddr & -sizeof (int); - data = ptrace (3, inferior_pid, rounded_addr, 0); - mask = 0xff << ((uaddr - rounded_addr) * 8); - - fpvalid = ((data & mask) != 0); - } - else - { - if (lseek (corechan, uaddr, 0) < 0) - perror ("seek on core file"); - if (myread (corechan, &fpvalid, 1) < 0) - perror ("read on core file"); - - } - - if (fpvalid == 0) - { - printf ("no floating point status saved\n"); - return; - } - - uaddr = (char *)&U_FPSTATE(u) - (char *)&u; - if (have_inferior_p ()) - { - int *ip; - - rounded_addr = uaddr & -sizeof (int); - rounded_size = (((uaddr + sizeof (struct fpstate)) - uaddr) + - sizeof (int) - 1) / sizeof (int); - skip = uaddr - rounded_addr; - - ip = (int *)buf; - for (i = 0; i < rounded_size; i++) - { - *ip++ = ptrace (3, inferior_pid, rounded_addr, 0); - rounded_addr += sizeof (int); - } - } - else - { - if (lseek (corechan, uaddr, 0) < 0) - perror_with_name ("seek on core file"); - if (myread (corechan, buf, sizeof (struct fpstate)) < 0) - perror_with_name ("read from core file"); - skip = 0; - } - - fpstatep = (struct fpstate *)(buf + skip); - print_387_status (fpstatep->status, (struct env387 *)fpstatep->state); -} - diff --git a/gnu/usr.bin/gdb/config/i386-pinsn.c b/gnu/usr.bin/gdb/config/i386-pinsn.c deleted file mode 100644 index 649baaf56bf6..000000000000 --- a/gnu/usr.bin/gdb/config/i386-pinsn.c +++ /dev/null @@ -1,1812 +0,0 @@ -/* Print i386 instructions for GDB, the GNU debugger. - Copyright (C) 1988, 1989 Free Software Foundation, Inc. - -This file is part of GDB. - -GDB is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 1, or (at your option) -any later version. - -GDB is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GDB; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -/* - * 80386 instruction printer by Pace Willisson (pace@prep.ai.mit.edu) - * July 1988 - */ - -/* - * The main tables describing the instructions is essentially a copy - * of the "Opcode Map" chapter (Appendix A) of the Intel 80386 - * Programmers Manual. Usually, there is a capital letter, followed - * by a small letter. The capital letter tell the addressing mode, - * and the small letter tells about the operand size. Refer to - * the Intel manual for details. - */ - -#include <stdio.h> -#include <ctype.h> - -#define Eb OP_E, b_mode -#define indirEb OP_indirE, b_mode -#define Gb OP_G, b_mode -#define Ev OP_E, v_mode -#define indirEv OP_indirE, v_mode -#define Ew OP_E, w_mode -#define Ma OP_E, v_mode -#define M OP_E, 0 -#define Mp OP_E, 0 /* ? */ -#define Gv OP_G, v_mode -#define Gw OP_G, w_mode -#define Rw OP_rm, w_mode -#define Rd OP_rm, d_mode -#define Ib OP_I, b_mode -#define sIb OP_sI, b_mode /* sign extened byte */ -#define Iv OP_I, v_mode -#define Iw OP_I, w_mode -#define Jb OP_J, b_mode -#define Jv OP_J, v_mode -#define ONE OP_ONE, 0 -#define Cd OP_C, d_mode -#define Dd OP_D, d_mode -#define Td OP_T, d_mode - -#define eAX OP_REG, eAX_reg -#define eBX OP_REG, eBX_reg -#define eCX OP_REG, eCX_reg -#define eDX OP_REG, eDX_reg -#define eSP OP_REG, eSP_reg -#define eBP OP_REG, eBP_reg -#define eSI OP_REG, eSI_reg -#define eDI OP_REG, eDI_reg -#define AL OP_REG, al_reg -#define CL OP_REG, cl_reg -#define DL OP_REG, dl_reg -#define BL OP_REG, bl_reg -#define AH OP_REG, ah_reg -#define CH OP_REG, ch_reg -#define DH OP_REG, dh_reg -#define BH OP_REG, bh_reg -#define AX OP_REG, ax_reg -#define DX OP_REG, dx_reg -#define indirDX OP_REG, indir_dx_reg - -#define Sw OP_SEG, w_mode -#define Ap OP_DIR, lptr -#define Av OP_DIR, v_mode -#define Ob OP_OFF, b_mode -#define Ov OP_OFF, v_mode -#define Xb OP_DSSI, b_mode -#define Xv OP_DSSI, v_mode -#define Yb OP_ESDI, b_mode -#define Yv OP_ESDI, v_mode - -#define es OP_REG, es_reg -#define ss OP_REG, ss_reg -#define cs OP_REG, cs_reg -#define ds OP_REG, ds_reg -#define fs OP_REG, fs_reg -#define gs OP_REG, gs_reg - -int OP_E(), OP_indirE(), OP_G(), OP_I(), OP_sI(), OP_REG(); -int OP_J(), OP_SEG(); -int OP_DIR(), OP_OFF(), OP_DSSI(), OP_ESDI(), OP_ONE(), OP_C(); -int OP_D(), OP_T(), OP_rm(); - - -#define b_mode 1 -#define v_mode 2 -#define w_mode 3 -#define d_mode 4 - -#define es_reg 100 -#define cs_reg 101 -#define ss_reg 102 -#define ds_reg 103 -#define fs_reg 104 -#define gs_reg 105 -#define eAX_reg 107 -#define eCX_reg 108 -#define eDX_reg 109 -#define eBX_reg 110 -#define eSP_reg 111 -#define eBP_reg 112 -#define eSI_reg 113 -#define eDI_reg 114 - -#define lptr 115 - -#define al_reg 116 -#define cl_reg 117 -#define dl_reg 118 -#define bl_reg 119 -#define ah_reg 120 -#define ch_reg 121 -#define dh_reg 122 -#define bh_reg 123 - -#define ax_reg 124 -#define cx_reg 125 -#define dx_reg 126 -#define bx_reg 127 -#define sp_reg 128 -#define bp_reg 129 -#define si_reg 130 -#define di_reg 131 - -#define indir_dx_reg 150 - -#define GRP1b NULL, NULL, 0 -#define GRP1S NULL, NULL, 1 -#define GRP1Ss NULL, NULL, 2 -#define GRP2b NULL, NULL, 3 -#define GRP2S NULL, NULL, 4 -#define GRP2b_one NULL, NULL, 5 -#define GRP2S_one NULL, NULL, 6 -#define GRP2b_cl NULL, NULL, 7 -#define GRP2S_cl NULL, NULL, 8 -#define GRP3b NULL, NULL, 9 -#define GRP3S NULL, NULL, 10 -#define GRP4 NULL, NULL, 11 -#define GRP5 NULL, NULL, 12 -#define GRP6 NULL, NULL, 13 -#define GRP7 NULL, NULL, 14 -#define GRP8 NULL, NULL, 15 - -#define FLOATCODE 50 -#define FLOAT NULL, NULL, FLOATCODE - -struct dis386 { - char *name; - int (*op1)(); - int bytemode1; - int (*op2)(); - int bytemode2; - int (*op3)(); - int bytemode3; -}; - -struct dis386 dis386[] = { - /* 00 */ - { "addb", Eb, Gb }, - { "addS", Ev, Gv }, - { "addb", Gb, Eb }, - { "addS", Gv, Ev }, - { "addb", AL, Ib }, - { "addS", eAX, Iv }, - { "pushl", es }, - { "popl", es }, - /* 08 */ - { "orb", Eb, Gb }, - { "orS", Ev, Gv }, - { "orb", Gb, Eb }, - { "orS", Gv, Ev }, - { "orb", AL, Ib }, - { "orS", eAX, Iv }, - { "pushl", cs }, - { "(bad)" }, /* 0x0f extended opcode escape */ - /* 10 */ - { "adcb", Eb, Gb }, - { "adcS", Ev, Gv }, - { "adcb", Gb, Eb }, - { "adcS", Gv, Ev }, - { "adcb", AL, Ib }, - { "adcS", eAX, Iv }, - { "pushl", ss }, - { "popl", ss }, - /* 18 */ - { "sbbb", Eb, Gb }, - { "sbbS", Ev, Gv }, - { "sbbb", Gb, Eb }, - { "sbbS", Gv, Ev }, - { "sbbb", AL, Ib }, - { "sbbS", eAX, Iv }, - { "pushl", ds }, - { "popl", ds }, - /* 20 */ - { "andb", Eb, Gb }, - { "andS", Ev, Gv }, - { "andb", Gb, Eb }, - { "andS", Gv, Ev }, - { "andb", AL, Ib }, - { "andS", eAX, Iv }, - { "(bad)" }, /* SEG ES prefix */ - { "daa" }, - /* 28 */ - { "subb", Eb, Gb }, - { "subS", Ev, Gv }, - { "subb", Gb, Eb }, - { "subS", Gv, Ev }, - { "subb", AL, Ib }, - { "subS", eAX, Iv }, - { "(bad)" }, /* SEG CS prefix */ - { "das" }, - /* 30 */ - { "xorb", Eb, Gb }, - { "xorS", Ev, Gv }, - { "xorb", Gb, Eb }, - { "xorS", Gv, Ev }, - { "xorb", AL, Ib }, - { "xorS", eAX, Iv }, - { "(bad)" }, /* SEG SS prefix */ - { "aaa" }, - /* 38 */ - { "cmpb", Eb, Gb }, - { "cmpS", Ev, Gv }, - { "cmpb", Gb, Eb }, - { "cmpS", Gv, Ev }, - { "cmpb", AL, Ib }, - { "cmpS", eAX, Iv }, - { "(bad)" }, /* SEG DS prefix */ - { "aas" }, - /* 40 */ - { "incS", eAX }, - { "incS", eCX }, - { "incS", eDX }, - { "incS", eBX }, - { "incS", eSP }, - { "incS", eBP }, - { "incS", eSI }, - { "incS", eDI }, - /* 48 */ - { "decS", eAX }, - { "decS", eCX }, - { "decS", eDX }, - { "decS", eBX }, - { "decS", eSP }, - { "decS", eBP }, - { "decS", eSI }, - { "decS", eDI }, - /* 50 */ - { "pushS", eAX }, - { "pushS", eCX }, - { "pushS", eDX }, - { "pushS", eBX }, - { "pushS", eSP }, - { "pushS", eBP }, - { "pushS", eSI }, - { "pushS", eDI }, - /* 58 */ - { "popS", eAX }, - { "popS", eCX }, - { "popS", eDX }, - { "popS", eBX }, - { "popS", eSP }, - { "popS", eBP }, - { "popS", eSI }, - { "popS", eDI }, - /* 60 */ - { "pusha" }, - { "popa" }, - { "boundS", Gv, Ma }, - { "arpl", Ew, Gw }, - { "(bad)" }, /* seg fs */ - { "(bad)" }, /* seg gs */ - { "(bad)" }, /* op size prefix */ - { "(bad)" }, /* adr size prefix */ - /* 68 */ - { "pushS", Iv }, /* 386 book wrong */ - { "imulS", Gv, Ev, Iv }, - { "pushl", sIb }, /* push of byte really pushes 4 bytes */ - { "imulS", Gv, Ev, Ib }, - { "insb", Yb, indirDX }, - { "insS", Yv, indirDX }, - { "outsb", indirDX, Xb }, - { "outsS", indirDX, Xv }, - /* 70 */ - { "jo", Jb }, - { "jno", Jb }, - { "jb", Jb }, - { "jae", Jb }, - { "je", Jb }, - { "jne", Jb }, - { "jbe", Jb }, - { "ja", Jb }, - /* 78 */ - { "js", Jb }, - { "jns", Jb }, - { "jp", Jb }, - { "jnp", Jb }, - { "jl", Jb }, - { "jnl", Jb }, - { "jle", Jb }, - { "jg", Jb }, - /* 80 */ - { GRP1b }, - { GRP1S }, - { "(bad)" }, - { GRP1Ss }, - { "testb", Eb, Gb }, - { "testS", Ev, Gv }, - { "xchgb", Eb, Gb }, - { "xchgS", Ev, Gv }, - /* 88 */ - { "movb", Eb, Gb }, - { "movS", Ev, Gv }, - { "movb", Gb, Eb }, - { "movS", Gv, Ev }, - { "movw", Ew, Sw }, - { "leaS", Gv, M }, - { "movw", Sw, Ew }, - { "popS", Ev }, - /* 90 */ - { "nop" }, - { "xchgS", eCX, eAX }, - { "xchgS", eDX, eAX }, - { "xchgS", eBX, eAX }, - { "xchgS", eSP, eAX }, - { "xchgS", eBP, eAX }, - { "xchgS", eSI, eAX }, - { "xchgS", eDI, eAX }, - /* 98 */ - { "cwtl" }, - { "cltd" }, - { "lcall", Ap }, - { "(bad)" }, /* fwait */ - { "pushf" }, - { "popf" }, - { "sahf" }, - { "lahf" }, - /* a0 */ - { "movb", AL, Ob }, - { "movS", eAX, Ov }, - { "movb", Ob, AL }, - { "movS", Ov, eAX }, - { "movsb", Yb, Xb }, - { "movsS", Yv, Xv }, - { "cmpsb", Yb, Xb }, - { "cmpsS", Yv, Xv }, - /* a8 */ - { "testb", AL, Ib }, - { "testS", eAX, Iv }, - { "stosb", Yb, AL }, - { "stosS", Yv, eAX }, - { "lodsb", AL, Xb }, - { "lodsS", eAX, Xv }, - { "scasb", AL, Xb }, - { "scasS", eAX, Xv }, - /* b0 */ - { "movb", AL, Ib }, - { "movb", CL, Ib }, - { "movb", DL, Ib }, - { "movb", BL, Ib }, - { "movb", AH, Ib }, - { "movb", CH, Ib }, - { "movb", DH, Ib }, - { "movb", BH, Ib }, - /* b8 */ - { "movS", eAX, Iv }, - { "movS", eCX, Iv }, - { "movS", eDX, Iv }, - { "movS", eBX, Iv }, - { "movS", eSP, Iv }, - { "movS", eBP, Iv }, - { "movS", eSI, Iv }, - { "movS", eDI, Iv }, - /* c0 */ - { GRP2b }, - { GRP2S }, - { "ret", Iw }, - { "ret" }, - { "lesS", Gv, Mp }, - { "ldsS", Gv, Mp }, - { "movb", Eb, Ib }, - { "movS", Ev, Iv }, - /* c8 */ - { "enter", Iw, Ib }, - { "leave" }, - { "lret", Iw }, - { "lret" }, - { "int3" }, - { "int", Ib }, - { "into" }, - { "iret" }, - /* d0 */ - { GRP2b_one }, - { GRP2S_one }, - { GRP2b_cl }, - { GRP2S_cl }, - { "aam", Ib }, - { "aad", Ib }, - { "(bad)" }, - { "xlat" }, - /* d8 */ - { FLOAT }, - { FLOAT }, - { FLOAT }, - { FLOAT }, - { FLOAT }, - { FLOAT }, - { FLOAT }, - { FLOAT }, - /* e0 */ - { "loopne", Jb }, - { "loope", Jb }, - { "loop", Jb }, - { "jCcxz", Jb }, - { "inb", AL, Ib }, - { "inS", eAX, Ib }, - { "outb", Ib, AL }, - { "outS", Ib, eAX }, - /* e8 */ - { "call", Av }, - { "jmp", Jv }, - { "ljmp", Ap }, - { "jmp", Jb }, - { "inb", AL, indirDX }, - { "inS", eAX, indirDX }, - { "outb", indirDX, AL }, - { "outS", indirDX, eAX }, - /* f0 */ - { "(bad)" }, /* lock prefix */ - { "(bad)" }, - { "(bad)" }, /* repne */ - { "(bad)" }, /* repz */ - { "hlt" }, - { "cmc" }, - { GRP3b }, - { GRP3S }, - /* f8 */ - { "clc" }, - { "stc" }, - { "cli" }, - { "sti" }, - { "cld" }, - { "std" }, - { GRP4 }, - { GRP5 }, -}; - -struct dis386 dis386_twobyte[] = { - /* 00 */ - { GRP6 }, - { GRP7 }, - { "larS", Gv, Ew }, - { "lslS", Gv, Ew }, - { "(bad)" }, - { "(bad)" }, - { "clts" }, - { "(bad)" }, - /* 08 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* 10 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* 18 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* 20 */ - /* these are all backward in appendix A of the intel book */ - { "movl", Rd, Cd }, - { "movl", Rd, Dd }, - { "movl", Cd, Rd }, - { "movl", Dd, Rd }, - { "movl", Rd, Td }, - { "(bad)" }, - { "movl", Td, Rd }, - { "(bad)" }, - /* 28 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* 30 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* 38 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* 40 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* 48 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* 50 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* 58 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* 60 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* 68 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* 70 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* 78 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* 80 */ - { "jo", Jv }, - { "jno", Jv }, - { "jb", Jv }, - { "jae", Jv }, - { "je", Jv }, - { "jne", Jv }, - { "jbe", Jv }, - { "ja", Jv }, - /* 88 */ - { "js", Jv }, - { "jns", Jv }, - { "jp", Jv }, - { "jnp", Jv }, - { "jl", Jv }, - { "jge", Jv }, - { "jle", Jv }, - { "jg", Jv }, - /* 90 */ - { "seto", Eb }, - { "setno", Eb }, - { "setb", Eb }, - { "setae", Eb }, - { "sete", Eb }, - { "setne", Eb }, - { "setbe", Eb }, - { "seta", Eb }, - /* 98 */ - { "sets", Eb }, - { "setns", Eb }, - { "setp", Eb }, - { "setnp", Eb }, - { "setl", Eb }, - { "setge", Eb }, - { "setle", Eb }, - { "setg", Eb }, - /* a0 */ - { "pushl", fs }, - { "popl", fs }, - { "(bad)" }, - { "btS", Ev, Gv }, - { "shldS", Ev, Gv, Ib }, - { "shldS", Ev, Gv, CL }, - { "(bad)" }, - { "(bad)" }, - /* a8 */ - { "pushl", gs }, - { "popl", gs }, - { "(bad)" }, - { "btsS", Ev, Gv }, - { "shrdS", Ev, Gv, Ib }, - { "shrdS", Ev, Gv, CL }, - { "(bad)" }, - { "imulS", Gv, Ev }, - /* b0 */ - { "(bad)" }, - { "(bad)" }, - { "lssS", Gv, Mp }, /* 386 lists only Mp */ - { "btrS", Ev, Gv }, - { "lfsS", Gv, Mp }, /* 386 lists only Mp */ - { "lgsS", Gv, Mp }, /* 386 lists only Mp */ - { "movzbS", Gv, Eb }, - { "movzwS", Gv, Ew }, - /* b8 */ - { "(bad)" }, - { "(bad)" }, - { GRP8 }, - { "btcS", Ev, Gv }, - { "bsfS", Gv, Ev }, - { "bsrS", Gv, Ev }, - { "movsbS", Gv, Eb }, - { "movswS", Gv, Ew }, - /* c0 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* c8 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* d0 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* d8 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* e0 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* e8 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* f0 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - /* f8 */ - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, - { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, -}; - -static char obuf[100]; -static char *obufp; -static char scratchbuf[100]; -static unsigned char *start_codep; -static unsigned char *codep; -static int mod; -static int rm; -static int reg; - -static char *names32[]={ - "%eax","%ecx","%edx","%ebx", "%esp","%ebp","%esi","%edi", -}; -static char *names16[] = { - "%ax","%cx","%dx","%bx","%sp","%bp","%si","%di", -}; -static char *names8[] = { - "%al","%cl","%dl","%bl","%ah","%ch","%dh","%bh", -}; -static char *names_seg[] = { - "%es","%cs","%ss","%ds","%fs","%gs","%?","%?", -}; - -struct dis386 grps[][8] = { - /* GRP1b */ - { - { "addb", Eb, Ib }, - { "orb", Eb, Ib }, - { "adcb", Eb, Ib }, - { "sbbb", Eb, Ib }, - { "andb", Eb, Ib }, - { "subb", Eb, Ib }, - { "xorb", Eb, Ib }, - { "cmpb", Eb, Ib } - }, - /* GRP1S */ - { - { "addS", Ev, Iv }, - { "orS", Ev, Iv }, - { "adcS", Ev, Iv }, - { "sbbS", Ev, Iv }, - { "andS", Ev, Iv }, - { "subS", Ev, Iv }, - { "xorS", Ev, Iv }, - { "cmpS", Ev, Iv } - }, - /* GRP1Ss */ - { - { "addS", Ev, sIb }, - { "orS", Ev, sIb }, - { "adcS", Ev, sIb }, - { "sbbS", Ev, sIb }, - { "andS", Ev, sIb }, - { "subS", Ev, sIb }, - { "xorS", Ev, sIb }, - { "cmpS", Ev, sIb } - }, - /* GRP2b */ - { - { "rolb", Eb, Ib }, - { "rorb", Eb, Ib }, - { "rclb", Eb, Ib }, - { "rcrb", Eb, Ib }, - { "shlb", Eb, Ib }, - { "shrb", Eb, Ib }, - { "(bad)" }, - { "sarb", Eb, Ib }, - }, - /* GRP2S */ - { - { "rolS", Ev, Ib }, - { "rorS", Ev, Ib }, - { "rclS", Ev, Ib }, - { "rcrS", Ev, Ib }, - { "shlS", Ev, Ib }, - { "shrS", Ev, Ib }, - { "(bad)" }, - { "sarS", Ev, Ib }, - }, - /* GRP2b_one */ - { - { "rolb", Eb }, - { "rorb", Eb }, - { "rclb", Eb }, - { "rcrb", Eb }, - { "shlb", Eb }, - { "shrb", Eb }, - { "(bad)" }, - { "sarb", Eb }, - }, - /* GRP2S_one */ - { - { "rolS", Ev }, - { "rorS", Ev }, - { "rclS", Ev }, - { "rcrS", Ev }, - { "shlS", Ev }, - { "shrS", Ev }, - { "(bad)" }, - { "sarS", Ev }, - }, - /* GRP2b_cl */ - { - { "rolb", Eb, CL }, - { "rorb", Eb, CL }, - { "rclb", Eb, CL }, - { "rcrb", Eb, CL }, - { "shlb", Eb, CL }, - { "shrb", Eb, CL }, - { "(bad)" }, - { "sarb", Eb, CL }, - }, - /* GRP2S_cl */ - { - { "rolS", Ev, CL }, - { "rorS", Ev, CL }, - { "rclS", Ev, CL }, - { "rcrS", Ev, CL }, - { "shlS", Ev, CL }, - { "shrS", Ev, CL }, - { "(bad)" }, - { "sarS", Ev, CL } - }, - /* GRP3b */ - { - { "testb", Eb, Ib }, - { "(bad)", Eb }, - { "notb", Eb }, - { "negb", Eb }, - { "mulb", AL, Eb }, - { "imulb", AL, Eb }, - { "divb", AL, Eb }, - { "idivb", AL, Eb } - }, - /* GRP3S */ - { - { "testS", Ev, Iv }, - { "(bad)" }, - { "notS", Ev }, - { "negS", Ev }, - { "mulS", eAX, Ev }, - { "imulS", eAX, Ev }, - { "divS", eAX, Ev }, - { "idivS", eAX, Ev }, - }, - /* GRP4 */ - { - { "incb", Eb }, - { "decb", Eb }, - { "(bad)" }, - { "(bad)" }, - { "(bad)" }, - { "(bad)" }, - { "(bad)" }, - { "(bad)" }, - }, - /* GRP5 */ - { - { "incS", Ev }, - { "decS", Ev }, - { "call", indirEv }, - { "lcall", indirEv }, - { "jmp", indirEv }, - { "ljmp", indirEv }, - { "pushS", Ev }, - { "(bad)" }, - }, - /* GRP6 */ - { - { "sldt", Ew }, - { "str", Ew }, - { "lldt", Ew }, - { "ltr", Ew }, - { "verr", Ew }, - { "verw", Ew }, - { "(bad)" }, - { "(bad)" } - }, - /* GRP7 */ - { - { "sgdt", Ew }, - { "sidt", Ew }, - { "lgdt", Ew }, - { "lidt", Ew }, - { "smsw", Ew }, - { "(bad)" }, - { "lmsw", Ew }, - { "(bad)" }, - }, - /* GRP8 */ - { - { "(bad)" }, - { "(bad)" }, - { "(bad)" }, - { "(bad)" }, - { "btS", Ev, Ib }, - { "btsS", Ev, Ib }, - { "btrS", Ev, Ib }, - { "btcS", Ev, Ib }, - } -}; - -#define PREFIX_REPZ 1 -#define PREFIX_REPNZ 2 -#define PREFIX_LOCK 4 -#define PREFIX_CS 8 -#define PREFIX_SS 0x10 -#define PREFIX_DS 0x20 -#define PREFIX_ES 0x40 -#define PREFIX_FS 0x80 -#define PREFIX_GS 0x100 -#define PREFIX_DATA 0x200 -#define PREFIX_ADR 0x400 -#define PREFIX_FWAIT 0x800 - -static int prefixes; - -ckprefix () -{ - prefixes = 0; - while (1) - { - switch (*codep) - { - case 0xf3: - prefixes |= PREFIX_REPZ; - break; - case 0xf2: - prefixes |= PREFIX_REPNZ; - break; - case 0xf0: - prefixes |= PREFIX_LOCK; - break; - case 0x2e: - prefixes |= PREFIX_CS; - break; - case 0x36: - prefixes |= PREFIX_SS; - break; - case 0x3e: - prefixes |= PREFIX_DS; - break; - case 0x26: - prefixes |= PREFIX_ES; - break; - case 0x64: - prefixes |= PREFIX_FS; - break; - case 0x65: - prefixes |= PREFIX_GS; - break; - case 0x66: - prefixes |= PREFIX_DATA; - break; - case 0x67: - prefixes |= PREFIX_ADR; - break; - case 0x9b: - prefixes |= PREFIX_FWAIT; - break; - default: - return; - } - codep++; - } -} - -static int dflag; -static int aflag; - -static char op1out[100], op2out[100], op3out[100]; -static int start_pc; - -/* - * disassemble the first instruction in 'inbuf'. You have to make - * sure all of the bytes of the instruction are filled in. - * On the 386's of 1988, the maximum length of an instruction is 15 bytes. - * (see topic "Redundant prefixes" in the "Differences from 8086" - * section of the "Virtual 8086 Mode" chapter.) - * 'pc' should be the address of this instruction, it will - * be used to print the target address if this is a relative jump or call - * 'outbuf' gets filled in with the disassembled instruction. it should - * be long enough to hold the longest disassembled instruction. - * 100 bytes is certainly enough, unless symbol printing is added later - * The function returns the length of this instruction in bytes. - */ -i386dis (pc, inbuf, outbuf) - int pc; - unsigned char *inbuf; - char *outbuf; -{ - struct dis386 *dp; - char *p; - int i; - int enter_instruction; - char *first, *second, *third; - int needcomma; - - obuf[0] = 0; - op1out[0] = 0; - op2out[0] = 0; - op3out[0] = 0; - - start_pc = pc; - start_codep = inbuf; - codep = inbuf; - - ckprefix (); - - if (*codep == 0xc8) - enter_instruction = 1; - else - enter_instruction = 0; - - obufp = obuf; - - if (prefixes & PREFIX_REPZ) - oappend ("repz "); - if (prefixes & PREFIX_REPNZ) - oappend ("repnz "); - if (prefixes & PREFIX_LOCK) - oappend ("lock "); - - if ((prefixes & PREFIX_FWAIT) - && ((*codep < 0xd8) || (*codep > 0xdf))) - { - /* fwait not followed by floating point instruction */ - oappend ("fwait"); - strcpy (outbuf, obuf); - return (1); - } - - /* these would be initialized to 0 if disassembling for 8086 or 286 */ - dflag = 1; - aflag = 1; - - if (prefixes & PREFIX_DATA) - dflag ^= 1; - - if (prefixes & PREFIX_ADR) - { - aflag ^= 1; - oappend ("addr16 "); - } - - if (*codep == 0x0f) - dp = &dis386_twobyte[*++codep]; - else - dp = &dis386[*codep]; - codep++; - mod = (*codep >> 6) & 3; - reg = (*codep >> 3) & 7; - rm = *codep & 7; - - if (dp->name == NULL && dp->bytemode1 == FLOATCODE) - { - dofloat (); - } - else - { - if (dp->name == NULL) - dp = &grps[dp->bytemode1][reg]; - - putop (dp->name); - - obufp = op1out; - if (dp->op1) - (*dp->op1)(dp->bytemode1); - - obufp = op2out; - if (dp->op2) - (*dp->op2)(dp->bytemode2); - - obufp = op3out; - if (dp->op3) - (*dp->op3)(dp->bytemode3); - } - - obufp = obuf + strlen (obuf); - for (i = strlen (obuf); i < 6; i++) - oappend (" "); - oappend (" "); - - /* enter instruction is printed with operands in the - * same order as the intel book; everything else - * is printed in reverse order - */ - if (enter_instruction) - { - first = op1out; - second = op2out; - third = op3out; - } - else - { - first = op3out; - second = op2out; - third = op1out; - } - needcomma = 0; - if (*first) - { - oappend (first); - needcomma = 1; - } - if (*second) - { - if (needcomma) - oappend (","); - oappend (second); - needcomma = 1; - } - if (*third) - { - if (needcomma) - oappend (","); - oappend (third); - } - strcpy (outbuf, obuf); - return (codep - inbuf); -} - -char *float_mem[] = { - /* d8 */ - "fadds", - "fmuls", - "fcoms", - "fcomps", - "fsubs", - "fsubrs", - "fdivs", - "fdivrs", - /* d9 */ - "flds", - "(bad)", - "fsts", - "fstps", - "fldenv", - "fldcw", - "fNstenv", - "fNstcw", - /* da */ - "fiaddl", - "fimull", - "ficoml", - "ficompl", - "fisubl", - "fisubrl", - "fidivl", - "fidivrl", - /* db */ - "fildl", - "(bad)", - "fistl", - "fistpl", - "(bad)", - "fldt", - "(bad)", - "fstpt", - /* dc */ - "faddl", - "fmull", - "fcoml", - "fcompl", - "fsubl", - "fsubrl", - "fdivl", - "fdivrl", - /* dd */ - "fldl", - "(bad)", - "fstl", - "fstpl", - "frstor", - "(bad)", - "fNsave", - "fNstsw", - /* de */ - "fiadd", - "fimul", - "ficom", - "ficomp", - "fisub", - "fisubr", - "fidiv", - "fidivr", - /* df */ - "fild", - "(bad)", - "fist", - "fistp", - "fbld", - "fildll", - "fbstp", - "fistpll", -}; - -#define ST OP_ST, 0 -#define STi OP_STi, 0 -int OP_ST(), OP_STi(); - -#define FGRPd9_2 NULL, NULL, 0 -#define FGRPd9_4 NULL, NULL, 1 -#define FGRPd9_5 NULL, NULL, 2 -#define FGRPd9_6 NULL, NULL, 3 -#define FGRPd9_7 NULL, NULL, 4 -#define FGRPda_5 NULL, NULL, 5 -#define FGRPdb_4 NULL, NULL, 6 -#define FGRPde_3 NULL, NULL, 7 -#define FGRPdf_4 NULL, NULL, 8 - -struct dis386 float_reg[][8] = { - /* d8 */ - { - { "fadd", ST, STi }, - { "fmul", ST, STi }, - { "fcom", STi }, - { "fcomp", STi }, - { "fsub", ST, STi }, - { "fsubr", ST, STi }, - { "fdiv", ST, STi }, - { "fdivr", ST, STi }, - }, - /* d9 */ - { - { "fld", STi }, - { "fxch", STi }, - { FGRPd9_2 }, - { "(bad)" }, - { FGRPd9_4 }, - { FGRPd9_5 }, - { FGRPd9_6 }, - { FGRPd9_7 }, - }, - /* da */ - { - { "(bad)" }, - { "(bad)" }, - { "(bad)" }, - { "(bad)" }, - { "(bad)" }, - { FGRPda_5 }, - { "(bad)" }, - { "(bad)" }, - }, - /* db */ - { - { "(bad)" }, - { "(bad)" }, - { "(bad)" }, - { "(bad)" }, - { FGRPdb_4 }, - { "(bad)" }, - { "(bad)" }, - { "(bad)" }, - }, - /* dc */ - { - { "fadd", STi, ST }, - { "fmul", STi, ST }, - { "(bad)" }, - { "(bad)" }, - { "fsub", STi, ST }, - { "fsubr", STi, ST }, - { "fdiv", STi, ST }, - { "fdivr", STi, ST }, - }, - /* dd */ - { - { "ffree", STi }, - { "(bad)" }, - { "fst", STi }, - { "fstp", STi }, - { "fucom", STi }, - { "fucomp", STi }, - { "(bad)" }, - { "(bad)" }, - }, - /* de */ - { - { "faddp", STi, ST }, - { "fmulp", STi, ST }, - { "(bad)" }, - { FGRPde_3 }, - { "fsubp", STi, ST }, - { "fsubrp", STi, ST }, - { "fdivp", STi, ST }, - { "fdivrp", STi, ST }, - }, - /* df */ - { - { "(bad)" }, - { "(bad)" }, - { "(bad)" }, - { "(bad)" }, - { FGRPdf_4 }, - { "(bad)" }, - { "(bad)" }, - { "(bad)" }, - }, -}; - - -char *fgrps[][8] = { - /* d9_2 0 */ - { - "fnop","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)", - }, - - /* d9_4 1 */ - { - "fchs","fabs","(bad)","(bad)","ftst","fxam","(bad)","(bad)", - }, - - /* d9_5 2 */ - { - "fld1","fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz","(bad)", - }, - - /* d9_6 3 */ - { - "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp","fincstp", - }, - - /* d9_7 4 */ - { - "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos", - }, - - /* da_5 5 */ - { - "(bad)","fucompp","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)", - }, - - /* db_4 6 */ - { - "feni(287 only)","fdisi(287 only)","fNclex","fNinit", - "fNsetpm(287 only)","(bad)","(bad)","(bad)", - }, - - /* de_3 7 */ - { - "(bad)","fcompp","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)", - }, - - /* df_4 8 */ - { - "fNstsw","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)", - }, -}; - - -dofloat () -{ - struct dis386 *dp; - unsigned char floatop; - - floatop = codep[-1]; - - if (mod != 3) - { - putop (float_mem[(floatop - 0xd8) * 8 + reg]); - obufp = op1out; - OP_E (v_mode); - return; - } - codep++; - - dp = &float_reg[floatop - 0xd8][reg]; - if (dp->name == NULL) - { - putop (fgrps[dp->bytemode1][rm]); - /* instruction fnstsw is only one with strange arg */ - if (floatop == 0xdf && *codep == 0xe0) - strcpy (op1out, "%eax"); - } - else - { - putop (dp->name); - obufp = op1out; - if (dp->op1) - (*dp->op1)(dp->bytemode1); - obufp = op2out; - if (dp->op2) - (*dp->op2)(dp->bytemode2); - } -} - -/* ARGSUSED */ -OP_ST (ignore) -{ - oappend ("%st"); -} - -/* ARGSUSED */ -OP_STi (ignore) -{ - sprintf (scratchbuf, "%%st(%d)", rm); - oappend (scratchbuf); -} - - -/* capital letters in template are macros */ -putop (template) - char *template; -{ - char *p; - - for (p = template; *p; p++) - { - switch (*p) - { - default: - *obufp++ = *p; - break; - case 'C': /* For jcxz/jecxz */ - if (aflag == 0) - *obufp++ = 'e'; - break; - case 'N': - if ((prefixes & PREFIX_FWAIT) == 0) - *obufp++ = 'n'; - break; - case 'S': - /* operand size flag */ - if (dflag) - *obufp++ = 'l'; - else - *obufp++ = 'w'; - break; - } - } - *obufp = 0; -} - -oappend (s) -char *s; -{ - strcpy (obufp, s); - obufp += strlen (s); - *obufp = 0; -} - -append_prefix () -{ - if (prefixes & PREFIX_CS) - oappend ("%cs:"); - if (prefixes & PREFIX_DS) - oappend ("%ds:"); - if (prefixes & PREFIX_SS) - oappend ("%ss:"); - if (prefixes & PREFIX_ES) - oappend ("%es:"); - if (prefixes & PREFIX_FS) - oappend ("%fs:"); - if (prefixes & PREFIX_GS) - oappend ("%gs:"); -} - -OP_indirE (bytemode) -{ - oappend ("*"); - OP_E (bytemode); -} - -OP_E (bytemode) -{ - int disp; - int havesib; - int didoutput = 0; - int base; - int index; - int scale; - int havebase; - - /* skip mod/rm byte */ - codep++; - - havesib = 0; - havebase = 0; - disp = 0; - - if (mod == 3) - { - switch (bytemode) - { - case b_mode: - oappend (names8[rm]); - break; - case w_mode: - oappend (names16[rm]); - break; - case v_mode: - if (dflag) - oappend (names32[rm]); - else - oappend (names16[rm]); - break; - default: - oappend ("<bad dis table>"); - break; - } - return; - } - - append_prefix (); - if (rm == 4) - { - havesib = 1; - havebase = 1; - scale = (*codep >> 6) & 3; - index = (*codep >> 3) & 7; - base = *codep & 7; - codep++; - } - - switch (mod) - { - case 0: - switch (rm) - { - case 4: - /* implies havesib and havebase */ - if (base == 5) { - havebase = 0; - disp = get32 (); - } - break; - case 5: - disp = get32 (); - break; - default: - havebase = 1; - base = rm; - break; - } - break; - case 1: - disp = *(char *)codep++; - if (rm != 4) - { - havebase = 1; - base = rm; - } - break; - case 2: - disp = get32 (); - if (rm != 4) - { - havebase = 1; - base = rm; - } - break; - } - - if (mod != 0 || rm == 5 || (havesib && base == 5)) - { - sprintf (scratchbuf, "%d", disp); - oappend (scratchbuf); - } - - if (havebase || havesib) - { - oappend ("("); - if (havebase) - oappend (names32[base]); - if (havesib) - { - if (index != 4) - { - sprintf (scratchbuf, ",%s", names32[index]); - oappend (scratchbuf); - } - sprintf (scratchbuf, ",%d", 1 << scale); - oappend (scratchbuf); - } - oappend (")"); - } -} - -OP_G (bytemode) -{ - switch (bytemode) - { - case b_mode: - oappend (names8[reg]); - break; - case w_mode: - oappend (names16[reg]); - break; - case d_mode: - oappend (names32[reg]); - break; - case v_mode: - if (dflag) - oappend (names32[reg]); - else - oappend (names16[reg]); - break; - default: - oappend ("<internal disassembler error>"); - break; - } -} - -get32 () -{ - int x = 0; - - x = *codep++ & 0xff; - x |= (*codep++ & 0xff) << 8; - x |= (*codep++ & 0xff) << 16; - x |= (*codep++ & 0xff) << 24; - return (x); -} - -get16 () -{ - int x = 0; - - x = *codep++ & 0xff; - x |= (*codep++ & 0xff) << 8; - return (x); -} - -OP_REG (code) -{ - char *s; - - switch (code) - { - case indir_dx_reg: s = "(%dx)"; break; - case ax_reg: case cx_reg: case dx_reg: case bx_reg: - case sp_reg: case bp_reg: case si_reg: case di_reg: - s = names16[code - ax_reg]; - break; - case es_reg: case ss_reg: case cs_reg: - case ds_reg: case fs_reg: case gs_reg: - s = names_seg[code - es_reg]; - break; - case al_reg: case ah_reg: case cl_reg: case ch_reg: - case dl_reg: case dh_reg: case bl_reg: case bh_reg: - s = names8[code - al_reg]; - break; - case eAX_reg: case eCX_reg: case eDX_reg: case eBX_reg: - case eSP_reg: case eBP_reg: case eSI_reg: case eDI_reg: - if (dflag) - s = names32[code - eAX_reg]; - else - s = names16[code - eAX_reg]; - break; - default: - s = "<internal disassembler error>"; - break; - } - oappend (s); -} - -OP_I (bytemode) -{ - int op; - - switch (bytemode) - { - case b_mode: - op = *codep++ & 0xff; - break; - case v_mode: - if (dflag) - op = get32 (); - else - op = get16 (); - break; - case w_mode: - op = get16 (); - break; - default: - oappend ("<internal disassembler error>"); - return; - } - sprintf (scratchbuf, "$0x%x", op); - oappend (scratchbuf); -} - -OP_sI (bytemode) -{ - int op; - - switch (bytemode) - { - case b_mode: - op = *(char *)codep++; - break; - case v_mode: - if (dflag) - op = get32 (); - else - op = (short)get16(); - break; - case w_mode: - op = (short)get16 (); - break; - default: - oappend ("<internal disassembler error>"); - return; - } - sprintf (scratchbuf, "$0x%x", op); - oappend (scratchbuf); -} - -OP_J (bytemode) -{ - int disp; - int mask = -1; - - switch (bytemode) - { - case b_mode: - disp = *(char *)codep++; - break; - case v_mode: - if (dflag) - disp = get32 (); - else - { - disp = (short)get16 (); - /* for some reason, a data16 prefix on a jump instruction - means that the pc is masked to 16 bits after the - displacement is added! */ - mask = 0xffff; - } - break; - default: - oappend ("<internal disassembelr error>"); - return; - } - - sprintf (scratchbuf, "0x%x", - (start_pc + codep - start_codep + disp) & mask); - oappend (scratchbuf); -} - -/* ARGSUSED */ -OP_SEG (dummy) -{ - static char *sreg[] = { - "%es","%cs","%ss","%ds","%fs","%gs","%?","%?", - }; - - oappend (sreg[reg]); -} - -OP_DIR (size) -{ - int seg, offset; - - switch (size) - { - case lptr: - if (aflag) - { - offset = get32 (); - seg = get16 (); - } - else - { - offset = get16 (); - seg = get16 (); - } - sprintf (scratchbuf, "0x%x,0x%x", seg, offset); - oappend (scratchbuf); - break; - case v_mode: - if (aflag) - offset = get32 (); - else - offset = (short)get16 (); - - sprintf (scratchbuf, "0x%x", - start_pc + codep - start_codep + offset); - oappend (scratchbuf); - break; - default: - oappend ("<internal disassembler error>"); - break; - } -} - -/* ARGSUSED */ -OP_OFF (bytemode) -{ - int off; - - if (aflag) - off = get32 (); - else - off = get16 (); - - sprintf (scratchbuf, "0x%x", off); - oappend (scratchbuf); -} - -/* ARGSUSED */ -OP_ESDI (dummy) -{ - oappend ("%es:("); - oappend (aflag ? "%edi" : "%di"); - oappend (")"); -} - -/* ARGSUSED */ -OP_DSSI (dummy) -{ - oappend ("%ds:("); - oappend (aflag ? "%esi" : "%si"); - oappend (")"); -} - -/* ARGSUSED */ -OP_ONE (dummy) -{ - oappend ("1"); -} - -/* ARGSUSED */ -OP_C (dummy) -{ - codep++; /* skip mod/rm */ - sprintf (scratchbuf, "%%cr%d", reg); - oappend (scratchbuf); -} - -/* ARGSUSED */ -OP_D (dummy) -{ - codep++; /* skip mod/rm */ - sprintf (scratchbuf, "%%db%d", reg); - oappend (scratchbuf); -} - -/* ARGSUSED */ -OP_T (dummy) -{ - codep++; /* skip mod/rm */ - sprintf (scratchbuf, "%%tr%d", reg); - oappend (scratchbuf); -} - -OP_rm (bytemode) -{ - switch (bytemode) - { - case d_mode: - oappend (names32[rm]); - break; - case w_mode: - oappend (names16[rm]); - break; - } -} - -/* GDB interface */ -#include "defs.h" -#include "param.h" -#include "symtab.h" -#include "frame.h" -#include "inferior.h" - -#define MAXLEN 20 -print_insn (memaddr, stream) - CORE_ADDR memaddr; - FILE *stream; -{ - unsigned char buffer[MAXLEN]; - /* should be expanded if disassembler prints symbol names */ - char outbuf[100]; - int n; - - read_memory (memaddr, buffer, MAXLEN); - - n = i386dis ((int)memaddr, buffer, outbuf); - - fputs (outbuf, stream); - - return (n); -} - diff --git a/gnu/usr.bin/gdb/config/i386bsd-dep.c b/gnu/usr.bin/gdb/config/i386bsd-dep.c deleted file mode 100644 index 16286eea2269..000000000000 --- a/gnu/usr.bin/gdb/config/i386bsd-dep.c +++ /dev/null @@ -1,1889 +0,0 @@ -/*- - * This code is derived from software copyrighted by the Free Software - * Foundation. - * - * Modified 1991 by Donn Seeley at UUNET Technologies, Inc. - * Modified 1990 by Van Jacobson at Lawrence Berkeley Laboratory. - */ - -#ifndef lint -static char sccsid[] = "@(#)i386bsd-dep.c 6.10 (Berkeley) 6/26/91"; -#endif /* not lint */ - -/* Low level interface to ptrace, for GDB when running on the Intel 386. - Copyright (C) 1988, 1989 Free Software Foundation, Inc. - -This file is part of GDB. - -GDB is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 1, or (at your option) -any later version. - -GDB is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GDB; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#include <stdio.h> -#include "defs.h" -#include "param.h" -#include "frame.h" -#include "inferior.h" -#include "value.h" - -#include <sys/param.h> -#include <sys/dir.h> -#include <signal.h> -#include <sys/ioctl.h> -#include <fcntl.h> - -#include <a.out.h> - -#ifndef N_SET_MAGIC -#define N_SET_MAGIC(exec, val) ((exec).a_magic = (val)) -#endif - -#include <sys/time.h> -#include <sys/resource.h> -#include <sys/uio.h> -#define curpcb Xcurpcb /* XXX avoid leaking declaration from pcb.h */ -#include <sys/user.h> -#undef curpcb -#include <sys/file.h> -#include <sys/stat.h> -#include <sys/ptrace.h> - -#include <machine/reg.h> - -#ifdef KERNELDEBUG -#ifndef NEWVM -#include <sys/vmmac.h> -#include <machine/pte.h> -#else -#include <sys/proc.h> /* for curproc */ -#endif -#include <machine/vmparam.h> -#include <machine/cpu.h> -#include <ctype.h> -#include "symtab.h" /* XXX */ - -#undef vtophys /* XXX */ - -extern int kernel_debugging; - -#define KERNOFF ((unsigned)KERNBASE) -#ifndef NEWVM -#define INKERNEL(x) ((x) >= KERNOFF && (x) < KERNOFF + ctob(slr)) -#define INUPAGE(x) \ - ((x) >= KERNEL_U_ADDR && (x) < KERNEL_U_ADDR + NBPG) -#else -#define INKERNEL(x) ((x) >= KERNOFF) -#endif - -#define PT_ADDR_ANY ((caddr_t) 1) - -/* - * Convert from sysmap pte index to system virtual address & vice-versa. - * (why aren't these in one of the system vm macro files???) - */ -#define smxtob(a) (sbr + (a) * sizeof(pte)) -#define btosmx(b) (((b) - sbr) / sizeof(pte)) - -static int ok_to_cache(); -static int found_pcb; -#ifdef NEWVM -static CORE_ADDR curpcb; -static CORE_ADDR kstack; -#endif - -static void setregmap(); - -extern int errno; - -/* - * This function simply calls ptrace with the given arguments. It exists so - * that all calls to ptrace are isolated in this machine-dependent file. - */ -int -call_ptrace(request, pid, arg3, arg4) - int request; - pid_t pid; - caddr_t arg3; - int arg4; -{ - return(ptrace(request, pid, arg3, arg4)); -} - -kill_inferior() -{ - if (remote_debugging) { -#ifdef KERNELDEBUG - if (kernel_debugging) - /* - * It's a very, very bad idea to go away leaving - * breakpoints in a remote kernel or to leave it - * stopped at a breakpoint. - */ - clear_breakpoints(); -#endif - remote_close(0); - inferior_died(); - } else if (inferior_pid != 0) { - ptrace(PT_KILL, inferior_pid, 0, 0); - wait(0); - inferior_died(); - } -} - -/* - * This is used when GDB is exiting. It gives less chance of error. - */ -kill_inferior_fast() -{ - if (remote_debugging) { -#ifdef KERNELDEBUG - if (kernel_debugging) - clear_breakpoints(); -#endif - remote_close(0); - return; - } - if (inferior_pid == 0) - return; - - ptrace(PT_KILL, inferior_pid, 0, 0); - wait(0); -} - -/* - * Resume execution of the inferior process. If STEP is nonzero, single-step - * it. If SIGNAL is nonzero, give it that signal. - */ -void -resume(step, signal) - int step; - int signal; -{ - errno = 0; - if (remote_debugging) - remote_resume(step, signal); - else { - ptrace(step ? PT_STEP : PT_CONTINUE, inferior_pid, - PT_ADDR_ANY, signal); - if (errno) - perror_with_name("ptrace"); - } -} - -#ifdef ATTACH_DETACH -extern int attach_flag; - -/* - * Start debugging the process whose number is PID. - */ -attach(pid) - int pid; -{ - errno = 0; - ptrace(PT_ATTACH, pid, 0, 0); - if (errno) - perror_with_name("ptrace"); - attach_flag = 1; - return pid; -} - -/* - * Stop debugging the process whose number is PID and continue it - * with signal number SIGNAL. SIGNAL = 0 means just continue it. - */ -void -detach(signal) - int signal; -{ - errno = 0; - ptrace(PT_DETACH, inferior_pid, PT_ADDR_ANY, signal); - if (errno) - perror_with_name("ptrace"); - attach_flag = 0; -} -#endif /* ATTACH_DETACH */ - -static unsigned int -get_register_offset() -{ - unsigned int offset; - struct user u; /* XXX */ - unsigned int flags = (char *) &u.u_pcb.pcb_flags - (char *) &u; - - setregmap(ptrace(PT_READ_U, inferior_pid, (caddr_t)flags, 0)); - -#ifdef NEWVM - offset = (char *) &u.u_kproc.kp_proc.p_regs - (char *) &u; - offset = ptrace(PT_READ_U, inferior_pid, (caddr_t)offset, 0) - - USRSTACK; -#else - offset = (char *) &u.u_ar0 - (char *) &u; - offset = ptrace(PT_READ_U, inferior_pid, (caddr_t)offset, 0) - - KERNEL_U_ADDR; -#endif - - return offset; -} - -void -fetch_inferior_registers() -{ - register int regno; - register unsigned int regaddr; - char buf[MAX_REGISTER_RAW_SIZE]; - register int i; - unsigned int offset; - - if (remote_debugging) { - extern char registers[]; - - remote_fetch_registers(registers); - return; - } - - offset = get_register_offset(); - - for (regno = 0; regno < NUM_REGS; regno++) { - regaddr = register_addr(regno, offset); - for (i = 0; i < REGISTER_RAW_SIZE(regno); i += sizeof(int)) { - *(int *)&buf[i] = ptrace(PT_READ_U, inferior_pid, - (caddr_t)regaddr, 0); - regaddr += sizeof(int); - } - supply_register(regno, buf); - } -} - -/* - * Store our register values back into the inferior. If REGNO is -1, do this - * for all registers. Otherwise, REGNO specifies which register (so we can - * save time). - */ -store_inferior_registers(regno) - int regno; -{ - register unsigned int regaddr; - char buf[80]; - extern char registers[]; - register int i; - unsigned int offset; - - if (remote_debugging) { - extern char registers[]; - - remote_store_registers(registers); - return; - } - - offset = get_register_offset(); - - if (regno >= 0) { - regaddr = register_addr(regno, offset); - for (i = 0; i < REGISTER_RAW_SIZE(regno); i += sizeof(int)) { - errno = 0; - ptrace(PT_WRITE_U, inferior_pid, (caddr_t)regaddr, - *(int *) ®isters[REGISTER_BYTE(regno) + i]); - if (errno != 0) { - sprintf(buf, "writing register number %d(%d)", - regno, i); - perror_with_name(buf); - } - regaddr += sizeof(int); - } - } else - for (regno = 0; regno < NUM_REGS; regno++) { - regaddr = register_addr(regno, offset); - for (i = 0; i < REGISTER_RAW_SIZE(regno); - i += sizeof(int)) { - errno = 0; - ptrace(PT_WRITE_U, inferior_pid, - (caddr_t)regaddr, - *(int *) ®isters[REGISTER_BYTE(regno) + i]); - if (errno != 0) { - sprintf(buf, - "writing register number %d(%d)", - regno, i); - perror_with_name(buf); - } - regaddr += sizeof(int); - } - } -} - -/* - * Copy LEN bytes from inferior's memory starting at MEMADDR to debugger - * memory starting at MYADDR. On failure (cannot read from inferior, usually - * because address is out of bounds) returns the value of errno. - */ -int -read_inferior_memory(memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - register int i; - /* Round starting address down to longword boundary. */ - register CORE_ADDR addr = memaddr & -sizeof(int); - /* Round ending address up; get number of longwords that makes. */ - register int count = (((memaddr + len) - addr) + sizeof(int) - 1) / - sizeof(int); - /* Allocate buffer of that many longwords. */ - register int *buffer = (int *) alloca(count * sizeof(int)); - extern int errno; - - if (remote_debugging) - return (remote_read_inferior_memory(memaddr, myaddr, len)); - - /* Read all the longwords */ - errno = 0; - for (i = 0; i < count && errno == 0; i++, addr += sizeof(int)) - buffer[i] = ptrace(PT_READ_I, inferior_pid, (caddr_t)addr, 0); - - /* Copy appropriate bytes out of the buffer. */ - bcopy((char *) buffer + (memaddr & (sizeof(int) - 1)), myaddr, len); - return(errno); -} - -/* - * Copy LEN bytes of data from debugger memory at MYADDR to inferior's memory - * at MEMADDR. On failure (cannot write the inferior) returns the value of - * errno. - */ - -int -write_inferior_memory(memaddr, myaddr, len) - CORE_ADDR memaddr; - char *myaddr; - int len; -{ - register int i; - /* Round starting address down to longword boundary. */ - register CORE_ADDR addr = memaddr & -sizeof(int); - /* Round ending address up; get number of longwords that makes. */ - register int count = (((memaddr + len) - addr) + sizeof(int) - 1) / - sizeof(int); - /* Allocate buffer of that many longwords. */ - register int *buffer = (int *) alloca(count * sizeof(int)); - extern int errno; - - /* - * Fill start and end extra bytes of buffer with existing memory - * data. - */ - if (remote_debugging) - return (remote_write_inferior_memory(memaddr, myaddr, len)); - - /* - * Fill start and end extra bytes of buffer with existing memory - * data. - */ - buffer[0] = ptrace(PT_READ_I, inferior_pid, (caddr_t)addr, 0); - - if (count > 1) - buffer[count - 1] = ptrace(PT_READ_I, inferior_pid, - (caddr_t)addr + (count - 1) * sizeof(int), 0); - - /* Copy data to be written over corresponding part of buffer */ - - bcopy(myaddr, (char *) buffer + (memaddr & (sizeof(int) - 1)), len); - - /* Write the entire buffer. */ - - errno = 0; - for (i = 0; i < count && errno == 0; i++, addr += sizeof(int)) - ptrace(PT_WRITE_I, inferior_pid, (caddr_t)addr, buffer[i]); - - return(errno); -} - - -/* - * Work with core dump and executable files, for GDB. - * This code would be in core.c if it weren't machine-dependent. - */ - -#ifndef N_TXTADDR -#define N_TXTADDR(hdr) 0 -#endif /* no N_TXTADDR */ - -#ifndef N_DATADDR -#define N_DATADDR(hdr) hdr.a_text -#endif /* no N_DATADDR */ - -/* - * Make COFF and non-COFF names for things a little more compatible to reduce - * conditionals later. - */ - -#ifndef AOUTHDR -#define AOUTHDR struct exec -#endif - -extern char *sys_siglist[]; - - -/* Hook for `exec_file_command' command to call. */ - -extern void (*exec_file_display_hook) (); - -/* File names of core file and executable file. */ - -extern char *corefile; -extern char *execfile; - -/* Descriptors on which core file and executable file are open. - Note that the execchan is closed when an inferior is created - and reopened if the inferior dies or is killed. */ - -extern int corechan; -extern int execchan; - -/* Last modification time of executable file. - Also used in source.c to compare against mtime of a source file. */ - -extern int exec_mtime; - -/* Virtual addresses of bounds of the two areas of memory in the core file. */ - -extern CORE_ADDR data_start; -extern CORE_ADDR data_end; -extern CORE_ADDR stack_start; -extern CORE_ADDR stack_end; - -/* Virtual addresses of bounds of two areas of memory in the exec file. - Note that the data area in the exec file is used only when there is no core file. */ - -extern CORE_ADDR text_start; -extern CORE_ADDR text_end; - -extern CORE_ADDR exec_data_start; -extern CORE_ADDR exec_data_end; - -/* Address in executable file of start of text area data. */ - -extern int text_offset; - -/* Address in executable file of start of data area data. */ - -extern int exec_data_offset; - -/* Address in core file of start of data area data. */ - -extern int data_offset; - -/* Address in core file of start of stack area data. */ - -extern int stack_offset; - -/* a.out header saved in core file. */ - -extern AOUTHDR core_aouthdr; - -/* a.out header of exec file. */ - -extern AOUTHDR exec_aouthdr; - -extern void validate_files (); - -extern int (*core_file_hook)(); - -#ifdef KERNELDEBUG -/* - * Kernel debugging routines. - */ - -#define IOTOP 0x100000 /* XXX should get this from include file */ -#define IOBASE 0xa0000 /* XXX should get this from include file */ - -static CORE_ADDR file_offset; -static CORE_ADDR lowram; -static CORE_ADDR sbr; -static CORE_ADDR slr; -static struct pcb pcb; - -static CORE_ADDR -ksym_lookup(name) - char *name; -{ - struct symbol *sym; - int i; - - if ((i = lookup_misc_func(name)) < 0) - error("kernel symbol `%s' not found.", name); - - return (misc_function_vector[i].address); -} - -/* - * return true if 'len' bytes starting at 'addr' can be read out as - * longwords and/or locally cached (this is mostly for memory mapped - * i/o register access when debugging remote kernels). - * - * XXX the HP code does this differently with NEWVM - */ -static int -ok_to_cache(addr, len) -{ - static CORE_ADDR atdevbase; - - if (! atdevbase) - atdevbase = ksym_lookup("atdevbase"); - - if (addr >= atdevbase && addr < atdevbase + (IOTOP - IOBASE)) - return (0); - - return (1); -} - -static -physrd(addr, dat, len) - u_int addr; - char *dat; -{ - if (lseek(corechan, addr - file_offset, L_SET) == -1) - return (-1); - if (read(corechan, dat, len) != len) - return (-1); - - return (0); -} - -/* - * When looking at kernel data space through /dev/mem or with a core file, do - * virtual memory mapping. - */ -#ifdef NEWVM -static CORE_ADDR -vtophys(addr) - CORE_ADDR addr; -{ - CORE_ADDR v; - struct pte pte; - static CORE_ADDR PTD = -1; - CORE_ADDR current_ptd; - - /* - * If we're looking at the kernel stack, - * munge the address to refer to the user space mapping instead; - * that way we get the requested process's kstack, not the running one. - */ - if (addr >= kstack && addr < kstack + ctob(UPAGES)) - addr = (addr - kstack) + curpcb; - - /* - * We may no longer have a linear system page table... - * - * Here's the scoop. IdlePTD contains the physical address - * of a page table directory that always maps the kernel. - * IdlePTD is in memory that is mapped 1-to-1, so we can - * find it easily given its 'virtual' address from ksym_lookup(). - * For hysterical reasons, the value of IdlePTD is stored in sbr. - * - * To look up a kernel address, we first convert it to a 1st-level - * address and look it up in IdlePTD. This gives us the physical - * address of a page table page; we extract the 2nd-level part of - * VA and read the 2nd-level pte. Finally, we add the offset part - * of the VA into the physical address from the pte and return it. - * - * User addresses are a little more complicated. If we don't have - * a current PCB from read_pcb(), we use PTD, which is the (fixed) - * virtual address of the current ptd. Since it's NOT in 1-to-1 - * kernel space, we must look it up using IdlePTD. If we do have - * a pcb, we get the ptd from pcb_ptd. - */ - - if (INKERNEL(addr)) - current_ptd = sbr; - else if (found_pcb == 0) { - if (PTD == -1) - PTD = vtophys(ksym_lookup("PTD")); - current_ptd = PTD; - } else - current_ptd = pcb.pcb_ptd; - - /* - * Read the first-level page table (ptd). - */ - v = current_ptd + ((unsigned)addr >> PD_SHIFT) * sizeof pte; - if (physrd(v, (char *)&pte, sizeof pte) || pte.pg_v == 0) - return (~0); - - /* - * Read the second-level page table. - */ - v = i386_ptob(pte.pg_pfnum) + ((addr&PT_MASK) >> PG_SHIFT) * sizeof pte; - if (physrd(v, (char *) &pte, sizeof(pte)) || pte.pg_v == 0) - return (~0); - - addr = i386_ptob(pte.pg_pfnum) + (addr & PGOFSET); -#if 0 - printf("vtophys(%x) -> %x\n", oldaddr, addr); -#endif - return (addr); -} -#else -static CORE_ADDR -vtophys(addr) - CORE_ADDR addr; -{ - CORE_ADDR v; - struct pte pte; - CORE_ADDR oldaddr = addr; - - if (found_pcb == 0 && INUPAGE(addr)) { - static CORE_ADDR pSwtchmap; - - if (pSwtchmap == 0) - pSwtchmap = vtophys(ksym_lookup("Swtchmap")); - addr = pSwtchmap; - } else if (INKERNEL(addr)) { - /* - * In system space get system pte. If valid or reclaimable - * then physical address is combination of its page number - * and the page offset of the original address. - */ - addr = smxtob(btop(addr - KERNOFF)) - KERNOFF; - } else { - v = btop(addr); - if (v < pcb.pcb_p0lr) - addr = (CORE_ADDR) pcb.pcb_p0br + - v * sizeof (struct pte); - else if (v >= pcb.pcb_p1lr && v < P1PAGES) - addr = (CORE_ADDR) pcb.pcb_p0br + - ((pcb.pcb_szpt * NPTEPG - HIGHPAGES) - - (BTOPUSRSTACK - v)) * sizeof (struct pte); - else - return (~0); - - /* - * For p0/p1 address, user-level page table should be in - * kernel vm. Do second-level indirect by recursing. - */ - if (!INKERNEL(addr)) - return (~0); - - addr = vtophys(addr); - } - /* - * Addr is now address of the pte of the page we are interested in; - * get the pte and paste up the physical address. - */ - if (physrd(addr, (char *) &pte, sizeof(pte))) - return (~0); - - if (pte.pg_v == 0 && (pte.pg_fod || pte.pg_pfnum == 0)) - return (~0); - - addr = (CORE_ADDR)ptob(pte.pg_pfnum) + (oldaddr & PGOFSET); -#if 0 - printf("vtophys(%x) -> %x\n", oldaddr, addr); -#endif - return (addr); -} - -#endif - -static -kvread(addr) - CORE_ADDR addr; -{ - CORE_ADDR paddr = vtophys(addr); - - if (paddr != ~0) - if (physrd(paddr, (char *)&addr, sizeof(addr)) == 0); - return (addr); - - return (~0); -} - -static void -read_pcb(uaddr) - u_int uaddr; -{ - int i; - int *pcb_regs = (int *)&pcb; - -#ifdef NEWVM - if (physrd(uaddr, (char *)&pcb, sizeof pcb)) - error("cannot read pcb at %x\n", uaddr); - printf("current pcb at %x\n", uaddr); -#else - if (physrd(uaddr, (char *)&pcb, sizeof pcb)) - error("cannot read pcb at %x\n", uaddr); - printf("p0br %x p0lr %x p1br %x p1lr %x\n", - pcb.pcb_p0br, pcb.pcb_p0lr, pcb.pcb_p1br, pcb.pcb_p1lr); -#endif - - /* - * get the register values out of the sys pcb and - * store them where `read_register' will find them. - */ - for (i = 0; i < 8; ++i) - supply_register(i, &pcb_regs[i+10]); - supply_register(8, &pcb_regs[8]); /* eip */ - supply_register(9, &pcb_regs[9]); /* eflags */ - for (i = 10; i < 13; ++i) /* cs, ss, ds */ - supply_register(i, &pcb_regs[i+9]); - supply_register(13, &pcb_regs[18]); /* es */ - for (i = 14; i < 16; ++i) /* fs, gs */ - supply_register(i, &pcb_regs[i+8]); - - /* XXX 80387 registers? */ -} - -static void -setup_kernel_debugging() -{ - struct stat stb; - int devmem = 0; - CORE_ADDR addr; - - fstat(corechan, &stb); - if ((stb.st_mode & S_IFMT) == S_IFCHR && stb.st_rdev == makedev(2, 0)) - devmem = 1; - -#ifdef NEWVM - physrd(ksym_lookup("IdlePTD") - KERNOFF, &sbr, sizeof sbr); - slr = 2 * NPTEPG; /* XXX temporary */ - printf("IdlePTD %x\n", sbr); - curpcb = ksym_lookup("curpcb") - KERNOFF; - physrd(curpcb, &curpcb, sizeof curpcb); - kstack = ksym_lookup("kstack"); -#else - sbr = ksym_lookup("Sysmap"); - slr = ksym_lookup("Syssize"); - printf("sbr %x slr %x\n", sbr, slr); -#endif - - /* - * pcb where "panic" saved registers in first thing in current - * u area. - */ -#ifndef NEWVM - read_pcb(vtophys(ksym_lookup("u"))); -#endif - found_pcb = 1; - if (!devmem) { - /* find stack frame */ - CORE_ADDR panicstr; - char buf[256]; - register char *cp; - - panicstr = kvread(ksym_lookup("panicstr")); - if (panicstr == ~0) - return; - (void) kernel_core_file_hook(panicstr, buf, sizeof(buf)); - for (cp = buf; cp < &buf[sizeof(buf)] && *cp; cp++) - if (!isascii(*cp) || (!isprint(*cp) && !isspace(*cp))) - *cp = '?'; - if (*cp) - *cp = '\0'; - printf("panic: %s\n", buf); - read_pcb(ksym_lookup("dumppcb") - KERNOFF); - } -#ifdef NEWVM - else - read_pcb(vtophys(kstack)); -#endif - - stack_start = USRSTACK; - stack_end = USRSTACK + ctob(UPAGES); -} - -set_paddr_command(arg) - char *arg; -{ - u_int uaddr; - - if (!arg) - error_no_arg("ps-style address for new current process"); - if (!kernel_debugging) - error("not debugging kernel"); - uaddr = (u_int) parse_and_eval_address(arg); -#ifndef NEWVM - read_pcb(ctob(uaddr)); -#else - /* p_addr is now a pcb virtual address */ - read_pcb(vtophys(uaddr)); - curpcb = uaddr; -#endif - - flush_cached_frames(); - set_current_frame(create_new_frame(read_register(FP_REGNUM), read_pc())); - select_frame(get_current_frame(), 0); -} - -/* - * read len bytes from kernel virtual address 'addr' into local - * buffer 'buf'. Return 0 if read ok, 1 otherwise. On read - * errors, portion of buffer not read is zeroed. - */ -kernel_core_file_hook(addr, buf, len) - CORE_ADDR addr; - char *buf; - int len; -{ - int i; - CORE_ADDR paddr; - - while (len > 0) { - paddr = vtophys(addr); - if (paddr == ~0) { - bzero(buf, len); - return (1); - } - /* we can't read across a page boundary */ - i = min(len, NBPG - (addr & PGOFSET)); - if (physrd(paddr, buf, i)) { - bzero(buf, len); - return (1); - } - buf += i; - addr += i; - len -= i; - } - return (0); -} -#endif - -core_file_command(filename, from_tty) - char *filename; - int from_tty; -{ - int val; - extern char registers[]; -#ifdef KERNELDEBUG - struct stat stb; -#endif - - /* - * Discard all vestiges of any previous core file and mark data and - * stack spaces as empty. - */ - if (corefile) - free(corefile); - corefile = 0; - core_file_hook = 0; - - if (corechan >= 0) - close(corechan); - corechan = -1; - - /* Now, if a new core file was specified, open it and digest it. */ - - if (filename == 0) { - if (from_tty) - printf("No core file now.\n"); - return; - } - filename = tilde_expand(filename); - make_cleanup(free, filename); - if (have_inferior_p()) - error("To look at a core file, you must kill the inferior with \"kill\"."); - corechan = open(filename, O_RDONLY, 0); - if (corechan < 0) - perror_with_name(filename); - -#ifdef KERNELDEBUG - fstat(corechan, &stb); - - if (kernel_debugging) { - setup_kernel_debugging(); - core_file_hook = kernel_core_file_hook; - } else if ((stb.st_mode & S_IFMT) == S_IFCHR && - stb.st_rdev == makedev(2, 1)) { - /* looking at /dev/kmem */ - data_offset = data_start = KERNOFF; - data_end = ~0; /* XXX */ - stack_end = stack_start = data_end; - } else -#endif - { - /* - * 4.2-style core dump file. - */ - struct user u; - unsigned int reg_offset; - - val = myread(corechan, &u, sizeof u); - if (val < 0) - perror_with_name("Not a core file: reading upage"); - if (val != sizeof u) - error("Not a core file: could only read %d bytes", val); - - /* - * We are depending on exec_file_command having been - * called previously to set exec_data_start. Since - * the executable and the core file share the same - * text segment, the address of the data segment will - * be the same in both. - */ - data_start = exec_data_start; - -#ifndef NEWVM - data_end = data_start + NBPG * u.u_dsize; - stack_start = stack_end - NBPG * u.u_ssize; - data_offset = NBPG * UPAGES; - stack_offset = NBPG * (UPAGES + u.u_dsize); - - /* - * Some machines put an absolute address in here and - * some put the offset in the upage of the regs. - */ - reg_offset = (int) u.u_ar0 - KERNEL_U_ADDR; -#else - stack_end = (CORE_ADDR) u.u_kproc.kp_eproc.e_vm.vm_maxsaddr - + MAXSSIZ; - - data_end = data_start + - NBPG * u.u_kproc.kp_eproc.e_vm.vm_dsize; - stack_start = stack_end - - NBPG * u.u_kproc.kp_eproc.e_vm.vm_ssize; - data_offset = NBPG * UPAGES; - stack_offset = NBPG * - (UPAGES + u.u_kproc.kp_eproc.e_vm.vm_dsize); - - reg_offset = (int) u.u_kproc.kp_proc.p_regs - USRSTACK; -#endif - - setregmap(u.u_pcb.pcb_flags); - - /* - * I don't know where to find this info. So, for now, - * mark it as not available. - */ - /* N_SET_MAGIC (core_aouthdr, 0); */ - bzero ((char *) &core_aouthdr, sizeof core_aouthdr); - - /* - * Read the register values out of the core file and - * store them where `read_register' will find them. - */ - { - register int regno; - - for (regno = 0; regno < NUM_REGS; regno++) { - char buf[MAX_REGISTER_RAW_SIZE]; - - val = lseek(corechan, register_addr(regno, reg_offset), 0); - if (val < 0 - || (val = myread(corechan, buf, sizeof buf)) < 0) { - char *buffer = (char *) alloca(strlen(reg_names[regno]) + 30); - strcpy(buffer, "Reading register "); - strcat(buffer, reg_names[regno]); - perror_with_name(buffer); - } - supply_register(regno, buf); - } - } - } -#endif - if (filename[0] == '/') - corefile = savestring(filename, strlen(filename)); - else - corefile = concat(current_directory, "/", filename); - - set_current_frame(create_new_frame(read_register(FP_REGNUM), - read_pc())); - select_frame(get_current_frame(), 0); - validate_files(); -} - -exec_file_command(filename, from_tty) - char *filename; - int from_tty; -{ - int val; - - /* - * Eliminate all traces of old exec file. Mark text segment as empty. - */ - - if (execfile) - free(execfile); - execfile = 0; - data_start = 0; - data_end = 0; - stack_start = 0; - stack_end = 0; - text_start = 0; - text_end = 0; - exec_data_start = 0; - exec_data_end = 0; - if (execchan >= 0) - close(execchan); - execchan = -1; - - /* Now open and digest the file the user requested, if any. */ - - if (filename) { - filename = tilde_expand(filename); - make_cleanup(free, filename); - - execchan = openp(getenv("PATH"), 1, filename, O_RDONLY, 0, - &execfile); - if (execchan < 0) - perror_with_name(filename); - - { - struct stat st_exec; - -#ifdef HEADER_SEEK_FD - HEADER_SEEK_FD(execchan); -#endif - - val = myread(execchan, &exec_aouthdr, sizeof(AOUTHDR)); - - if (val < 0) - perror_with_name(filename); - -#ifdef KERNELDEBUG - if (kernel_debugging) { - /* Gross and disgusting XXX */ - text_start = KERNTEXT_BASE; - exec_data_start = KERNTEXT_BASE + - (exec_aouthdr.a_text + 4095) & ~ 4095; - } else { -#endif - text_start = N_TXTADDR(exec_aouthdr); - exec_data_start = N_DATADDR(exec_aouthdr); -#ifdef KERNELDEBUG - } -#endif - - text_offset = N_TXTOFF(exec_aouthdr); - exec_data_offset = N_TXTOFF(exec_aouthdr) + exec_aouthdr.a_text; - - text_end = text_start + exec_aouthdr.a_text; - exec_data_end = exec_data_start + exec_aouthdr.a_data; - - fstat(execchan, &st_exec); - exec_mtime = st_exec.st_mtime; - } - - validate_files(); - } else if (from_tty) - printf("No exec file now.\n"); - - /* Tell display code (if any) about the changed file name. */ - if (exec_file_display_hook) - (*exec_file_display_hook) (filename); -} - -int dummy_code[] = { - 0xb8909090, /* nop; nop; nop; movl $0x32323232,%eax */ - 0x32323232, -#define DUMMY_CALL_INDEX 1 - 0x90ccd0ff, /* call %eax; int3; nop */ -}; - -/* - * Build `dummy' call instructions on inferior's stack to cause - * it to call a subroutine. - * - * N.B. - code in wait_for_inferior requires that sp < pc < fp when - * we take the trap 2 above so it will recognize that we stopped - * at a `dummy' call. So, after the call sp is *not* decremented - * to clean the arguments, code & other stuff we lay on the stack. - * Since the regs are restored to saved values at the breakpoint, - * sp will get reset correctly. Also, this restore means we don't - * have to construct frame linkage info to save pc & fp. The lack - * of frame linkage means we can't do a backtrace, etc., if the - * called function gets a fault or hits a breakpoint but code in - * run_stack_dummy makes this impossible anyway. - */ -CORE_ADDR -setup_dummy(sp, funaddr, nargs, args, struct_return_bytes, pushfn) - CORE_ADDR sp; - CORE_ADDR funaddr; - int nargs; - value *args; - int struct_return_bytes; - CORE_ADDR (*pushfn)(); -{ - int padding, i; - CORE_ADDR top = sp, struct_addr, pc; - - i = arg_stacklen(nargs, args) + struct_return_bytes - + sizeof(dummy_code); - if (i & 3) - padding = 4 - (i & 3); - else - padding = 0; - pc = sp - sizeof(dummy_code); - sp = pc - padding - struct_return_bytes; - struct_addr = sp; - while (--nargs >= 0) - sp = (*pushfn)(sp, *args++); - if (struct_return_bytes) - STORE_STRUCT_RETURN(struct_addr, sp); - write_register(SP_REGNUM, sp); - - dummy_code[DUMMY_CALL_INDEX] = (int)funaddr; - write_memory(pc, (char *)dummy_code, sizeof(dummy_code)); - - return pc; -} - -/* helper functions for m-i386.h */ - -/* stdio style buffering to minimize calls to ptrace */ -static CORE_ADDR codestream_next_addr; -static CORE_ADDR codestream_addr; -static unsigned char codestream_buf[sizeof (int)]; -static int codestream_off; -static int codestream_cnt; - -#define codestream_tell() (codestream_addr + codestream_off) -#define codestream_peek() (codestream_cnt == 0 ? \ - codestream_fill(1): codestream_buf[codestream_off]) -#define codestream_get() (codestream_cnt-- == 0 ? \ - codestream_fill(0) : codestream_buf[codestream_off++]) - -static unsigned char -codestream_fill (peek_flag) -{ - codestream_addr = codestream_next_addr; - codestream_next_addr += sizeof (int); - codestream_off = 0; - codestream_cnt = sizeof (int); - read_memory (codestream_addr, - (unsigned char *)codestream_buf, - sizeof (int)); - - if (peek_flag) - return (codestream_peek()); - else - return (codestream_get()); -} - -static void -codestream_seek (place) -{ - codestream_next_addr = place & -sizeof (int); - codestream_cnt = 0; - codestream_fill (1); - while (codestream_tell() != place) - codestream_get (); -} - -static void -codestream_read (buf, count) - unsigned char *buf; -{ - unsigned char *p; - int i; - p = buf; - for (i = 0; i < count; i++) - *p++ = codestream_get (); -} - -/* next instruction is a jump, move to target */ -static -i386_follow_jump () -{ - int long_delta; - short short_delta; - char byte_delta; - int data16; - int pos; - - pos = codestream_tell (); - - data16 = 0; - if (codestream_peek () == 0x66) - { - codestream_get (); - data16 = 1; - } - - switch (codestream_get ()) - { - case 0xe9: - /* relative jump: if data16 == 0, disp32, else disp16 */ - if (data16) - { - codestream_read ((unsigned char *)&short_delta, 2); - pos += short_delta + 3; /* include size of jmp inst */ - } - else - { - codestream_read ((unsigned char *)&long_delta, 4); - pos += long_delta + 5; - } - break; - case 0xeb: - /* relative jump, disp8 (ignore data16) */ - codestream_read ((unsigned char *)&byte_delta, 1); - pos += byte_delta + 2; - break; - } - codestream_seek (pos + data16); -} - -/* - * find & return amound a local space allocated, and advance codestream to - * first register push (if any) - * - * if entry sequence doesn't make sense, return -1, and leave - * codestream pointer random - */ -static long -i386_get_frame_setup (pc) -{ - unsigned char op; - - codestream_seek (pc); - - i386_follow_jump (); - - op = codestream_get (); - - if (op == 0x58) /* popl %eax */ - { - /* - * this function must start with - * - * popl %eax 0x58 - * xchgl %eax, (%esp) 0x87 0x04 0x24 - * or xchgl %eax, 0(%esp) 0x87 0x44 0x24 0x00 - * - * (the system 5 compiler puts out the second xchg - * inst, and the assembler doesn't try to optimize it, - * so the 'sib' form gets generated) - * - * this sequence is used to get the address of the return - * buffer for a function that returns a structure - */ - int pos; - unsigned char buf[4]; - static unsigned char proto1[3] = { 0x87,0x04,0x24 }; - static unsigned char proto2[4] = { 0x87,0x44,0x24,0x00 }; - pos = codestream_tell (); - codestream_read (buf, 4); - if (bcmp (buf, proto1, 3) == 0) - pos += 3; - else if (bcmp (buf, proto2, 4) == 0) - pos += 4; - - codestream_seek (pos); - op = codestream_get (); /* update next opcode */ - } - - if (op == 0x55) /* pushl %esp */ - { - /* check for movl %esp, %ebp - can be written two ways */ - switch (codestream_get ()) - { - case 0x8b: - if (codestream_get () != 0xec) - return (-1); - break; - case 0x89: - if (codestream_get () != 0xe5) - return (-1); - break; - default: - return (-1); - } - /* check for stack adjustment - * - * subl $XXX, %esp - * - * note: you can't subtract a 16 bit immediate - * from a 32 bit reg, so we don't have to worry - * about a data16 prefix - */ - op = codestream_peek (); - if (op == 0x83) - { - /* subl with 8 bit immed */ - codestream_get (); - if (codestream_get () != 0xec) - return (-1); - /* subl with signed byte immediate - * (though it wouldn't make sense to be negative) - */ - return (codestream_get()); - } - else if (op == 0x81) - { - /* subl with 32 bit immed */ - int locals; - codestream_get(); - if (codestream_get () != 0xec) - return (-1); - /* subl with 32 bit immediate */ - codestream_read ((unsigned char *)&locals, 4); - return (locals); - } - else - { - return (0); - } - } - else if (op == 0xc8) - { - /* enter instruction: arg is 16 bit unsigned immed */ - unsigned short slocals; - codestream_read ((unsigned char *)&slocals, 2); - codestream_get (); /* flush final byte of enter instruction */ - return (slocals); - } - return (-1); -} - -/* Return number of args passed to a frame. - Can return -1, meaning no way to tell. */ - -/* on the 386, the instruction following the call could be: - * popl %ecx - one arg - * addl $imm, %esp - imm/4 args; imm may be 8 or 32 bits - * anything else - zero args - */ - -int -i386_frame_num_args (fi) - struct frame_info fi; -{ - int retpc; - unsigned char op; - struct frame_info *pfi; - - pfi = get_prev_frame_info ((fi)); - if (pfi == 0) - { - /* Note: this can happen if we are looking at the frame for - main, because FRAME_CHAIN_VALID won't let us go into - start. If we have debugging symbols, that's not really - a big deal; it just means it will only show as many arguments - to main as are declared. */ - return -1; - } - else - { - retpc = pfi->pc; - op = read_memory_integer (retpc, 1); - if (op == 0x59) - /* pop %ecx */ - return 1; - else if (op == 0x83) - { - op = read_memory_integer (retpc+1, 1); - if (op == 0xc4) - /* addl $<signed imm 8 bits>, %esp */ - return (read_memory_integer (retpc+2,1)&0xff)/4; - else - return 0; - } - else if (op == 0x81) - { /* add with 32 bit immediate */ - op = read_memory_integer (retpc+1, 1); - if (op == 0xc4) - /* addl $<imm 32>, %esp */ - return read_memory_integer (retpc+2, 4) / 4; - else - return 0; - } - else - { - return 0; - } - } -} - -/* - * parse the first few instructions of the function to see - * what registers were stored. - * - * We handle these cases: - * - * The startup sequence can be at the start of the function, - * or the function can start with a branch to startup code at the end. - * - * %ebp can be set up with either the 'enter' instruction, or - * 'pushl %ebp, movl %esp, %ebp' (enter is too slow to be useful, - * but was once used in the sys5 compiler) - * - * Local space is allocated just below the saved %ebp by either the - * 'enter' instruction, or by 'subl $<size>, %esp'. 'enter' has - * a 16 bit unsigned argument for space to allocate, and the - * 'addl' instruction could have either a signed byte, or - * 32 bit immediate. - * - * Next, the registers used by this function are pushed. In - * the sys5 compiler they will always be in the order: %edi, %esi, %ebx - * (and sometimes a harmless bug causes it to also save but not restore %eax); - * however, the code below is willing to see the pushes in any order, - * and will handle up to 8 of them. - * - * If the setup sequence is at the end of the function, then the - * next instruction will be a branch back to the start. - */ - -i386_frame_find_saved_regs (fip, fsrp) - struct frame_info *fip; - struct frame_saved_regs *fsrp; -{ - unsigned long locals; - unsigned char *p; - unsigned char op; - CORE_ADDR dummy_bottom; - CORE_ADDR adr; - int i; - - bzero (fsrp, sizeof *fsrp); - -#if 0 - /* if frame is the end of a dummy, compute where the - * beginning would be - */ - dummy_bottom = fip->frame - 4 - NUM_REGS*4 - CALL_DUMMY_LENGTH; - - /* check if the PC is in the stack, in a dummy frame */ - if (dummy_bottom <= fip->pc && fip->pc <= fip->frame) - { - /* all regs were saved by push_call_dummy () */ - adr = fip->frame - 4; - for (i = 0; i < NUM_REGS; i++) - { - fsrp->regs[i] = adr; - adr -= 4; - } - return; - } -#endif - - locals = i386_get_frame_setup (get_pc_function_start (fip->pc)); - - if (locals >= 0) - { - adr = fip->frame - 4 - locals; - for (i = 0; i < 8; i++) - { - op = codestream_get (); - if (op < 0x50 || op > 0x57) - break; - fsrp->regs[op - 0x50] = adr; - adr -= 4; - } - } - - fsrp->regs[PC_REGNUM] = fip->frame + 4; - fsrp->regs[FP_REGNUM] = fip->frame; -} - -/* return pc of first real instruction */ -i386_skip_prologue (pc) -{ - unsigned char op; - int i; - - if (i386_get_frame_setup (pc) < 0) - return (pc); - - /* found valid frame setup - codestream now points to - * start of push instructions for saving registers - */ - - /* skip over register saves */ - for (i = 0; i < 8; i++) - { - op = codestream_peek (); - /* break if not pushl inst */ - if (op < 0x50 || op > 0x57) - break; - codestream_get (); - } - - i386_follow_jump (); - - return (codestream_tell ()); -} - -i386_pop_frame () -{ - FRAME frame = get_current_frame (); - CORE_ADDR fp; - int regnum; - struct frame_saved_regs fsr; - struct frame_info *fi; - - fi = get_frame_info (frame); - fp = fi->frame; - get_frame_saved_regs (fi, &fsr); - for (regnum = 0; regnum < NUM_REGS; regnum++) - { - CORE_ADDR adr; - adr = fsr.regs[regnum]; - if (adr) - write_register (regnum, read_memory_integer (adr, 4)); - } - write_register (FP_REGNUM, read_memory_integer (fp, 4)); - write_register (PC_REGNUM, read_memory_integer (fp + 4, 4)); - write_register (SP_REGNUM, fp + 8); - flush_cached_frames (); - set_current_frame ( create_new_frame (read_register (FP_REGNUM), - read_pc ())); -} - -/* this table must line up with REGISTER_NAMES in m-i386.h */ -/* symbols like 'EAX' come from <sys/reg.h> */ -static int trapmap[] = -{ - tEAX, tECX, tEDX, tEBX, - tESP, tEBP, tESI, tEDI, - tEIP, tEFLAGS, tCS, tSS, - tDS, tES, tES, tES /* lies: no fs or gs */ -}; -#if defined(FM_TRAP) || defined(EX_TRAPSTK) -static int syscallmap[] = -{ - sEAX, sECX, sEDX, sEBX, - sESP, sEBP, sESI, sEDI, - sEIP, sEFLAGS, sCS, sSS, - sCS, sCS, sCS, sCS /* lies: no ds, es, fs or gs */ -}; -#endif -static int *regmap; - -static void -setregmap(flags) - int flags; -{ -#ifdef FM_TRAP - regmap = flags & FM_TRAP ? trapmap: syscallmap; -#elif EX_TRAPSTK - regmap = flags & EX_TRAPSTK ? trapmap : syscallmap; -#else - regmap = trapmap; /* the lesser evil */ -#endif -} - -/* blockend is the value of u.u_ar0, and points to the - * place where GS is stored - */ -i386_register_u_addr (blockend, regnum) -{ -#if 0 - /* this will be needed if fp registers are reinstated */ - /* for now, you can look at them with 'info float' - * sys5 wont let you change them with ptrace anyway - */ - if (regnum >= FP0_REGNUM && regnum <= FP7_REGNUM) - { - int ubase, fpstate; - struct user u; - ubase = blockend + 4 * (SS + 1) - KSTKSZ; - fpstate = ubase + ((char *)&u.u_fpstate - (char *)&u); - return (fpstate + 0x1c + 10 * (regnum - FP0_REGNUM)); - } - else -#endif - return (blockend + 4 * regmap[regnum]); -} - -i387_to_double (from, to) - char *from; - char *to; -{ - long *lp; - /* push extended mode on 387 stack, then pop in double mode - * - * first, set exception masks so no error is generated - - * number will be rounded to inf or 0, if necessary - */ - asm ("pushl %eax"); /* grab a stack slot */ - asm ("fstcw (%esp)"); /* get 387 control word */ - asm ("movl (%esp),%eax"); /* save old value */ - asm ("orl $0x3f,%eax"); /* mask all exceptions */ - asm ("pushl %eax"); - asm ("fldcw (%esp)"); /* load new value into 387 */ - - asm ("movl 8(%ebp),%eax"); - asm ("fldt (%eax)"); /* push extended number on 387 stack */ - asm ("fwait"); - asm ("movl 12(%ebp),%eax"); - asm ("fstpl (%eax)"); /* pop double */ - asm ("fwait"); - - asm ("popl %eax"); /* flush modified control word */ - asm ("fnclex"); /* clear exceptions */ - asm ("fldcw (%esp)"); /* restore original control word */ - asm ("popl %eax"); /* flush saved copy */ -} - -double_to_i387 (from, to) - char *from; - char *to; -{ - /* push double mode on 387 stack, then pop in extended mode - * no errors are possible because every 64-bit pattern - * can be converted to an extended - */ - asm ("movl 8(%ebp),%eax"); - asm ("fldl (%eax)"); - asm ("fwait"); - asm ("movl 12(%ebp),%eax"); - asm ("fstpt (%eax)"); - asm ("fwait"); -} - -struct env387 -{ - unsigned short control; - unsigned short r0; - unsigned short status; - unsigned short r1; - unsigned short tag; - unsigned short r2; - unsigned long eip; - unsigned short code_seg; - unsigned short opcode; - unsigned long operand; - unsigned short operand_seg; - unsigned short r3; - unsigned char regs[8][10]; -}; - -static -print_387_control_word (control) -unsigned short control; -{ - printf ("control 0x%04x: ", control); - printf ("compute to "); - switch ((control >> 8) & 3) - { - case 0: printf ("24 bits; "); break; - case 1: printf ("(bad); "); break; - case 2: printf ("53 bits; "); break; - case 3: printf ("64 bits; "); break; - } - printf ("round "); - switch ((control >> 10) & 3) - { - case 0: printf ("NEAREST; "); break; - case 1: printf ("DOWN; "); break; - case 2: printf ("UP; "); break; - case 3: printf ("CHOP; "); break; - } - if (control & 0x3f) - { - printf ("mask:"); - if (control & 0x0001) printf (" INVALID"); - if (control & 0x0002) printf (" DENORM"); - if (control & 0x0004) printf (" DIVZ"); - if (control & 0x0008) printf (" OVERF"); - if (control & 0x0010) printf (" UNDERF"); - if (control & 0x0020) printf (" LOS"); - printf (";"); - } - printf ("\n"); - if (control & 0xe080) printf ("warning: reserved bits on 0x%x\n", - control & 0xe080); -} - -static -print_387_status_word (status) - unsigned short status; -{ - printf ("status 0x%04x: ", status); - if (status & 0xff) - { - printf ("exceptions:"); - if (status & 0x0001) printf (" INVALID"); - if (status & 0x0002) printf (" DENORM"); - if (status & 0x0004) printf (" DIVZ"); - if (status & 0x0008) printf (" OVERF"); - if (status & 0x0010) printf (" UNDERF"); - if (status & 0x0020) printf (" LOS"); - if (status & 0x0040) printf (" FPSTACK"); - printf ("; "); - } - printf ("flags: %d%d%d%d; ", - (status & 0x4000) != 0, - (status & 0x0400) != 0, - (status & 0x0200) != 0, - (status & 0x0100) != 0); - - printf ("top %d\n", (status >> 11) & 7); -} - -static -print_387_status (status, ep) - unsigned short status; - struct env387 *ep; -{ - int i; - int bothstatus; - int top; - int fpreg; - unsigned char *p; - - bothstatus = ((status != 0) && (ep->status != 0)); - if (status != 0) - { - if (bothstatus) - printf ("u: "); - print_387_status_word (status); - } - - if (ep->status != 0) - { - if (bothstatus) - printf ("e: "); - print_387_status_word (ep->status); - } - - print_387_control_word (ep->control); - printf ("last exception: "); - printf ("opcode 0x%x; ", ep->opcode); - printf ("pc 0x%x:0x%x; ", ep->code_seg, ep->eip); - printf ("operand 0x%x:0x%x\n", ep->operand_seg, ep->operand); - - top = (ep->status >> 11) & 7; - - printf (" regno tag msb lsb value\n"); - for (fpreg = 7; fpreg >= 0; fpreg--) - { - int st_regno; - double val; - - /* The physical regno `fpreg' is only relevant as an index into the - * tag word. Logical `%st' numbers are required for indexing `p->regs. - */ - st_regno = (fpreg + 8 - top) & 0x7; - - printf ("%%st(%d) %s ", st_regno, fpreg == top ? "=>" : " "); - - switch ((ep->tag >> (fpreg * 2)) & 3) - { - case 0: printf ("valid "); break; - case 1: printf ("zero "); break; - case 2: printf ("trap "); break; - case 3: printf ("empty "); break; - } - for (i = 9; i >= 0; i--) - printf ("%02x", ep->regs[st_regno][i]); - - i387_to_double (ep->regs[st_regno], (char *)&val); - printf (" %g\n", val); - } -#if 0 /* reserved fields are always 0xffff on 486's */ - if (ep->r0) - printf ("warning: reserved0 is 0x%x\n", ep->r0); - if (ep->r1) - printf ("warning: reserved1 is 0x%x\n", ep->r1); - if (ep->r2) - printf ("warning: reserved2 is 0x%x\n", ep->r2); - if (ep->r3) - printf ("warning: reserved3 is 0x%x\n", ep->r3); -#endif -} - -#ifdef __386BSD__ -#define fpstate save87 -#define U_FPSTATE(u) u.u_pcb.pcb_savefpu -#endif - -#ifndef U_FPSTATE -#define U_FPSTATE(u) u.u_fpstate -#endif - -i386_float_info () -{ - struct user u; /* just for address computations */ - int i; - /* fpstate defined in <sys/user.h> */ - struct fpstate *fpstatep; - char buf[sizeof (struct fpstate) + 2 * sizeof (int)]; - unsigned int uaddr; - char fpvalid; - unsigned int rounded_addr; - unsigned int rounded_size; - extern int corechan; - int skip; - -#ifndef __386BSD__ /* XXX - look at pcb flags */ - uaddr = (char *)&u.u_fpvalid - (char *)&u; - if (have_inferior_p()) - { - unsigned int data; - unsigned int mask; - - rounded_addr = uaddr & -sizeof (int); - data = ptrace (PT_READ_U, inferior_pid, (caddr_t)rounded_addr, 0); - mask = 0xff << ((uaddr - rounded_addr) * 8); - - fpvalid = ((data & mask) != 0); - } - else - { - if (lseek (corechan, uaddr, 0) < 0) - perror ("seek on core file"); - if (myread (corechan, &fpvalid, 1) < 0) - perror ("read on core file"); - - } - - if (fpvalid == 0) - { - printf ("no floating point status saved\n"); - return; - } -#endif /* not __386BSD__ */ - - uaddr = (char *)&U_FPSTATE(u) - (char *)&u; - if (have_inferior_p ()) - { - int *ip; - - rounded_addr = uaddr & -sizeof (int); - rounded_size = (((uaddr + sizeof (struct fpstate)) - uaddr) + - sizeof (int) - 1) / sizeof (int); - skip = uaddr - rounded_addr; - - ip = (int *)buf; - for (i = 0; i < rounded_size; i++) - { - *ip++ = ptrace (PT_READ_U, inferior_pid, (caddr_t)rounded_addr, 0); - rounded_addr += sizeof (int); - } - } - else - { - if (lseek (corechan, uaddr, 0) < 0) - perror_with_name ("seek on core file"); - if (myread (corechan, buf, sizeof (struct fpstate)) < 0) - perror_with_name ("read from core file"); - skip = 0; - } - -#ifdef __386BSD__ - print_387_status (0, (struct env387 *)buf); -#else - fpstatep = (struct fpstate *)(buf + skip); - print_387_status (fpstatep->status, (struct env387 *)fpstatep->state); -#endif -} - -void -_initialize_i386bsd_dep() -{ -#ifdef KERNELDEBUG - add_com ("process-address", class_obscure, set_paddr_command, - "The process identified by (ps-style) ADDR becomes the\n\ -\"current\" process context for kernel debugging."); - add_com_alias ("paddr", "process-address", class_obscure, 0); -#endif -} diff --git a/gnu/usr.bin/gdb/config/m-i386-sv32.h b/gnu/usr.bin/gdb/config/m-i386-sv32.h deleted file mode 100644 index 38fb4eb6d5b6..000000000000 --- a/gnu/usr.bin/gdb/config/m-i386-sv32.h +++ /dev/null @@ -1,28 +0,0 @@ -/* Macro defintions for i386, running System V 3.2. - Copyright (C) 1989 Free Software Foundation, Inc. - -This file is part of GDB. - -GDB is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 1, or (at your option) -any later version. - -GDB is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GDB; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#include "m-i386.h" - -/* Apparently there is inconsistency among various System V's about what - the name of this field is. */ -#define U_FPSTATE(u) u.u_fps.u_fpstate - -/* TIOCGETC is defined in System V 3.2 termio.h, but struct tchars - is not. This makes problems for inflow.c. */ -#define TIOCGETC_BROKEN diff --git a/gnu/usr.bin/gdb/config/m-i386.h b/gnu/usr.bin/gdb/config/m-i386.h deleted file mode 100644 index 5449ec454c95..000000000000 --- a/gnu/usr.bin/gdb/config/m-i386.h +++ /dev/null @@ -1,394 +0,0 @@ -/* Macro defintions for i386. - Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc. - -This file is part of GDB. - -GDB is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 1, or (at your option) -any later version. - -GDB is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GDB; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -/* Define the bit, byte, and word ordering of the machine. */ -/* #define BITS_BIG_ENDIAN */ -/* #define BYTES_BIG_ENDIAN */ -/* #define WORDS_BIG_ENDIAN */ - -/* - * Changes for 80386 by Pace Willisson (pace@prep.ai.mit.edu) - * July 1988 - */ - - -#ifndef i386 -#define i386 -#endif - -/* I'm running gdb 3.4 under 386/ix 2.0.2, which is a derivative of AT&T's -Sys V/386 3.2. - -On some machines, gdb crashes when it's starting up while calling the -vendor's termio tgetent() routine. It always works when run under -itself (actually, under 3.2, it's not an infinitely recursive bug.) -After some poking around, it appears that depending on the environment -size, or whether you're running YP, or the phase of the moon or something, -the stack is not always long-aligned when main() is called, and tgetent() -takes strong offense at that. On some machines this bug never appears, but -on those where it does, it occurs quite reliably. */ -#define ALIGN_STACK_ON_STARTUP - -/* define USG if you are using sys5 /usr/include's */ -#define USG - -/* USG systems need these */ -#define vfork() fork() -#define MAXPATHLEN 500 - -/* define this if you don't have the extension to coff that allows - * file names to appear in the string table - * (aux.x_file.x_foff) - */ -#define COFF_NO_LONG_FILE_NAMES - -/* turn this on when rest of gdb is ready */ -/* #define IEEE_FLOAT */ - -#define NBPG NBPC -#define UPAGES USIZE - -#define HAVE_TERMIO - -/* Get rid of any system-imposed stack limit if possible. */ - -/* #define SET_STACK_LIMIT_HUGE not in sys5 */ - -/* Define this if the C compiler puts an underscore at the front - of external names before giving them to the linker. */ - -/* #define NAMES_HAVE_UNDERSCORE */ - -/* Specify debugger information format. */ - -/* #define READ_DBX_FORMAT */ -#define COFF_FORMAT - -/* number of traps that happen between exec'ing the shell - * to run an inferior, and when we finally get to - * the inferior code. This is 2 on most implementations. - */ -#define START_INFERIOR_TRAPS_EXPECTED 4 - -/* Offset from address of function to start of its code. - Zero on most machines. */ - -#define FUNCTION_START_OFFSET 0 - -/* Advance PC across any function entry prologue instructions - to reach some "real" code. */ - -#define SKIP_PROLOGUE(frompc) {(frompc) = i386_skip_prologue((frompc));} - -/* Immediately after a function call, return the saved pc. - Can't always go through the frames for this because on some machines - the new frame is not set up until the new function executes - some instructions. */ - -#define SAVED_PC_AFTER_CALL(frame) \ - (read_memory_integer (read_register (SP_REGNUM), 4)) - -/* This is the amount to subtract from u.u_ar0 - to get the offset in the core file of the register values. */ - -#define KERNEL_U_ADDR 0xe0000000 - -/* Address of end of stack space. */ - -#define STACK_END_ADDR 0x80000000 - -/* Stack grows downward. */ - -#define INNER_THAN < - -/* Sequence of bytes for breakpoint instruction. */ - -#define BREAKPOINT {0xcc} - -/* Amount PC must be decremented by after a breakpoint. - This is often the number of bytes in BREAKPOINT - but not always. */ - -#define DECR_PC_AFTER_BREAK 1 - -/* Nonzero if instruction at PC is a return instruction. */ - -#define ABOUT_TO_RETURN(pc) (read_memory_integer (pc, 1) == 0xc3) - -/* Return 1 if P points to an invalid floating point value. - LEN is the length in bytes -- not relevant on the 386. */ - -#define INVALID_FLOAT(p, len) (0) - -/* code to execute to print interesting information about the - * floating point processor (if any) - * No need to define if there is nothing to do. - */ -#define FLOAT_INFO { i386_float_info (); } - - -/* Largest integer type */ -#define LONGEST long - -/* Name of the builtin type for the LONGEST type above. */ -#define BUILTIN_TYPE_LONGEST builtin_type_long - -/* Say how long (ordinary) registers are. */ - -#define REGISTER_TYPE long - -/* Number of machine registers */ - -#define NUM_REGS 16 - -/* Initializer for an array of names of registers. - There should be NUM_REGS strings in this initializer. */ - -/* the order of the first 8 registers must match the compiler's - * numbering scheme (which is the same as the 386 scheme) - * also, this table must match regmap in i386-pinsn.c. - */ -#define REGISTER_NAMES { "eax", "ecx", "edx", "ebx", \ - "esp", "ebp", "esi", "edi", \ - "eip", "ps", "cs", "ss", \ - "ds", "es", "fs", "gs", \ - } - -/* Register numbers of various important registers. - Note that some of these values are "real" register numbers, - and correspond to the general registers of the machine, - and some are "phony" register numbers which are too large - to be actual register numbers as far as the user is concerned - but do serve to get the desired values when passed to read_register. */ - -#define FP_REGNUM 5 /* Contains address of executing stack frame */ -#define SP_REGNUM 4 /* Contains address of top of stack */ - -#define PC_REGNUM 8 -#define PS_REGNUM 9 - -#define REGISTER_U_ADDR(addr, blockend, regno) \ - (addr) = i386_register_u_addr ((blockend),(regno)); - -/* Total amount of space needed to store our copies of the machine's - register state, the array `registers'. */ -#define REGISTER_BYTES (NUM_REGS * 4) - -/* Index within `registers' of the first byte of the space for - register N. */ - -#define REGISTER_BYTE(N) ((N)*4) - -/* Number of bytes of storage in the actual machine representation - for register N. */ - -#define REGISTER_RAW_SIZE(N) (4) - -/* Number of bytes of storage in the program's representation - for register N. */ - -#define REGISTER_VIRTUAL_SIZE(N) (4) - -/* Largest value REGISTER_RAW_SIZE can have. */ - -#define MAX_REGISTER_RAW_SIZE 4 - -/* Largest value REGISTER_VIRTUAL_SIZE can have. */ - -#define MAX_REGISTER_VIRTUAL_SIZE 4 - -/* Nonzero if register N requires conversion - from raw format to virtual format. */ - -#define REGISTER_CONVERTIBLE(N) (0) - -/* Convert data from raw format for register REGNUM - to virtual format for register REGNUM. */ - -#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) {bcopy ((FROM), (TO), 4);} - -/* Convert data from virtual format for register REGNUM - to raw format for register REGNUM. */ - -#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) {bcopy ((FROM), (TO), 4);} - -/* Return the GDB type object for the "standard" data type - of data in register N. */ - -#define REGISTER_VIRTUAL_TYPE(N) (builtin_type_int) - -/* Store the address of the place in which to copy the structure the - subroutine will return. This is called from call_function. */ - -#define STORE_STRUCT_RETURN(ADDR, SP) \ - { (SP) -= sizeof (ADDR); \ - write_memory ((SP), &(ADDR), sizeof (ADDR)); } - -/* Extract from an array REGBUF containing the (raw) register state - a function return value of type TYPE, and copy that, in virtual format, - into VALBUF. */ - -#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ - bcopy (REGBUF, VALBUF, TYPE_LENGTH (TYPE)) - -/* Write into appropriate registers a function return value - of type TYPE, given in virtual format. */ - -#define STORE_RETURN_VALUE(TYPE,VALBUF) \ - write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE)) - -/* Extract from an array REGBUF containing the (raw) register state - the address in which a function should return its structure value, - as a CORE_ADDR (or an expression that can be used as one). */ - -#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(int *)(REGBUF)) - - -/* Describe the pointer in each stack frame to the previous stack frame - (its caller). */ - -/* FRAME_CHAIN takes a frame's nominal address - and produces the frame's chain-pointer. - - FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address - and produces the nominal address of the caller frame. - - However, if FRAME_CHAIN_VALID returns zero, - it means the given frame is the outermost one and has no caller. - In that case, FRAME_CHAIN_COMBINE is not used. */ - -#define FRAME_CHAIN(thisframe) \ - (outside_startup_file ((thisframe)->pc) ? \ - read_memory_integer ((thisframe)->frame, 4) :\ - 0) - -#define FRAME_CHAIN_VALID(chain, thisframe) \ - (chain != 0 && (outside_startup_file (FRAME_SAVED_PC (thisframe)))) - -#define FRAME_CHAIN_COMBINE(chain, thisframe) (chain) - -/* Define other aspects of the stack frame. */ - -/* A macro that tells us whether the function invocation represented - by FI does not have a frame on the stack associated with it. If it - does not, FRAMELESS is set to 1, else 0. */ -#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \ - FRAMELESS_LOOK_FOR_PROLOGUE(FI, FRAMELESS) - -#define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 4, 4)) - -#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame) - -#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame) - -/* Return number of args passed to a frame. - Can return -1, meaning no way to tell. */ - -#define FRAME_NUM_ARGS(numargs, fi) (numargs) = i386_frame_num_args(fi) - -/* Return number of bytes at start of arglist that are not really args. */ - -#define FRAME_ARGS_SKIP 8 - -/* Put here the code to store, into a struct frame_saved_regs, - the addresses of the saved registers of frame described by FRAME_INFO. - This includes special registers such as pc and fp saved in special - ways in the stack frame. sp is even more special: - the address we return for it IS the sp for the next frame. */ - -#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ -{ i386_frame_find_saved_regs ((frame_info), &(frame_saved_regs)); } - - -/* Things needed for making the inferior call functions. */ - -/* Push an empty stack frame, to record the current PC, etc. */ - -#define PUSH_DUMMY_FRAME { i386_push_dummy_frame (); } - -/* Discard from the stack the innermost frame, restoring all registers. */ - -#define POP_FRAME { i386_pop_frame (); } - -/* this is - * call 11223344 (32 bit relative) - * int3 - */ - -#define CALL_DUMMY { 0x223344e8, 0xcc11 } - -#define CALL_DUMMY_LENGTH 8 - -#define CALL_DUMMY_START_OFFSET 0 /* Start execution at beginning of dummy */ - -/* Insert the specified number of args and function address - into a call sequence of the above form stored at DUMMYNAME. */ - -#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, type) \ -{ \ - int from, to, delta, loc; \ - loc = (int)(read_register (SP_REGNUM) - CALL_DUMMY_LENGTH); \ - from = loc + 5; \ - to = (int)(fun); \ - delta = to - from; \ - *(int *)((char *)(dummyname) + 1) = delta; \ -} - - -#if 0 -/* Interface definitions for kernel debugger KDB. */ - -/* Map machine fault codes into signal numbers. - First subtract 0, divide by 4, then index in a table. - Faults for which the entry in this table is 0 - are not handled by KDB; the program's own trap handler - gets to handle then. */ - -#define FAULT_CODE_ORIGIN 0 -#define FAULT_CODE_UNITS 4 -#define FAULT_TABLE \ -{ 0, 0, 0, 0, 0, 0, 0, 0, \ - 0, 0, 0, 0, 0, 0, 0, 0, \ - 0, 0, 0, 0, 0, 0, 0, 0} - -/* Start running with a stack stretching from BEG to END. - BEG and END should be symbols meaningful to the assembler. - This is used only for kdb. */ - -#define INIT_STACK(beg, end) {} - -/* Push the frame pointer register on the stack. */ -#define PUSH_FRAME_PTR {} - -/* Copy the top-of-stack to the frame pointer register. */ -#define POP_FRAME_PTR {} - -/* After KDB is entered by a fault, push all registers - that GDB thinks about (all NUM_REGS of them), - so that they appear in order of ascending GDB register number. - The fault code will be on the stack beyond the last register. */ - -#define PUSH_REGISTERS {} - -/* Assuming the registers (including processor status) have been - pushed on the stack in order of ascending GDB register number, - restore them and return to the address in the saved PC register. */ - -#define POP_REGISTERS {} -#endif diff --git a/gnu/usr.bin/gdb/config/m-i386bsd.h b/gnu/usr.bin/gdb/config/m-i386bsd.h deleted file mode 100644 index 15d97b23d339..000000000000 --- a/gnu/usr.bin/gdb/config/m-i386bsd.h +++ /dev/null @@ -1,375 +0,0 @@ -/*- - * This code is derived from software copyrighted by the Free Software - * Foundation. - * - * Modified 1991 by Donn Seeley at UUNET Technologies, Inc. - * Modified 1991 by William Jolitz at UUNET Technologies, Inc. - * - * @(#)m-i386bsd.h 6.7 (Berkeley) 5/8/91 - */ - -/* Macro definitions for i386. - Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc. - -This file is part of GDB. - -GDB is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 1, or (at your option) -any later version. - -GDB is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GDB; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -/* Define the bit, byte, and word ordering of the machine. */ -/* #define BITS_BIG_ENDIAN */ -/* #define BYTES_BIG_ENDIAN */ -/* #define WORDS_BIG_ENDIAN */ - -/* - * Changes for 80386 by Pace Willisson (pace@prep.ai.mit.edu) - * July 1988 - * [ MODIFIED FOR 386BSD W. Jolitz ] - */ - -#ifndef i386 -#define i386 1 -#define i386b 1 -#endif - -#define IEEE_FLOAT -#define LONG_LONG - -/* Library stuff: POSIX tty (not supported yet), V7 tty (sigh), vprintf. */ - -#define HAVE_TERMIOS 1 -#define USE_OLD_TTY 1 -#define HAVE_VPRINTF 1 - -/* We support local and remote kernel debugging. */ - -#define KERNELDEBUG 1 - -/* Get rid of any system-imposed stack limit if possible. */ - -#define SET_STACK_LIMIT_HUGE - -/* Define this if the C compiler puts an underscore at the front - of external names before giving them to the linker. */ - -#define NAMES_HAVE_UNDERSCORE - -/* Specify debugger information format. */ - -#define READ_DBX_FORMAT - -/* number of traps that happen between exec'ing the shell - * to run an inferior, and when we finally get to - * the inferior code. This is 2 on most implementations. - */ -#define START_INFERIOR_TRAPS_EXPECTED 2 - -/* Offset from address of function to start of its code. - Zero on most machines. */ - -#define FUNCTION_START_OFFSET 0 - -/* Advance PC across any function entry prologue instructions - to reach some "real" code. */ - -#define SKIP_PROLOGUE(frompc) {(frompc) = i386_skip_prologue((frompc));} - -/* Immediately after a function call, return the saved pc. - Can't always go through the frames for this because on some machines - the new frame is not set up until the new function executes - some instructions. */ - -#define SAVED_PC_AFTER_CALL(frame) \ - (read_memory_integer (read_register (SP_REGNUM), 4)) - -/* This is the amount to subtract from u.u_ar0 - to get the offset in the core file of the register values. */ - -#ifdef NEWVM -#include <machine/vmparam.h> -#define KERNEL_U_ADDR USRSTACK -#else -#define KERNEL_U_ADDR 0xfdffd000 -#endif - -/* Address of end of stack space. */ - -#define STACK_END_ADDR KERNEL_U_ADDR - -/* Stack grows downward. */ - -#define INNER_THAN < - -/* Sequence of bytes for breakpoint instruction. */ - -#define BREAKPOINT {0xcc} - -/* Amount PC must be decremented by after a breakpoint. - This is often the number of bytes in BREAKPOINT - but not always. */ - -#define DECR_PC_AFTER_BREAK 1 - -/* Nonzero if instruction at PC is a return instruction. */ - -#define ABOUT_TO_RETURN(pc) \ - strchr("\302\303\312\313\317", read_memory_integer(pc, 1)) - -/* Return 1 if P points to an invalid floating point value. - LEN is the length in bytes -- not relevant on the 386. */ - -#define INVALID_FLOAT(p, len) (0) - -/* code to execute to print interesting information about the - * floating point processor (if any) - * No need to define if there is nothing to do. - */ -#define FLOAT_INFO { i386_float_info (); } - - -/* Largest integer type */ -#define LONGEST long long - -/* Name of the builtin type for the LONGEST type above. */ -#define BUILTIN_TYPE_LONGEST builtin_type_long_long - -/* Say how long (ordinary) registers are. */ - -#define REGISTER_TYPE long - -/* Number of machine registers */ - -#define NUM_REGS 16 - -/* Initializer for an array of names of registers. - There should be NUM_REGS strings in this initializer. */ - -/* the order of the first 8 registers must match the compiler's - * numbering scheme (which is the same as the 386 scheme) - * also, this table must match regmap in i386-pinsn.c. - */ -#define REGISTER_NAMES { "eax", "ecx", "edx", "ebx", \ - "esp", "ebp", "esi", "edi", \ - "eip", "ps", "cs", "ss", \ - "ds", "es", "fs", "gs", \ - } - -/* Register numbers of various important registers. - Note that some of these values are "real" register numbers, - and correspond to the general registers of the machine, - and some are "phony" register numbers which are too large - to be actual register numbers as far as the user is concerned - but do serve to get the desired values when passed to read_register. */ - -#define FP_REGNUM 5 /* Contains address of executing stack frame */ -#define SP_REGNUM 4 /* Contains address of top of stack */ - -#define PC_REGNUM 8 -#define PS_REGNUM 9 - -#define REGISTER_U_ADDR(addr, blockend, regno) \ - (addr) = i386_register_u_addr ((blockend),(regno)); - -/* Total amount of space needed to store our copies of the machine's - register state, the array `registers'. */ -#define REGISTER_BYTES (NUM_REGS * 4) - -/* Index within `registers' of the first byte of the space for - register N. */ - -#define REGISTER_BYTE(N) ((N)*4) - -/* Number of bytes of storage in the actual machine representation - for register N. */ - -#define REGISTER_RAW_SIZE(N) (4) - -/* Number of bytes of storage in the program's representation - for register N. */ - -#define REGISTER_VIRTUAL_SIZE(N) (4) - -/* Largest value REGISTER_RAW_SIZE can have. */ - -#define MAX_REGISTER_RAW_SIZE 4 - -/* Largest value REGISTER_VIRTUAL_SIZE can have. */ - -#define MAX_REGISTER_VIRTUAL_SIZE 4 - -/* Nonzero if register N requires conversion - from raw format to virtual format. */ - -#define REGISTER_CONVERTIBLE(N) (0) - -/* Convert data from raw format for register REGNUM - to virtual format for register REGNUM. */ - -#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) {bcopy ((FROM), (TO), 4);} - -/* Convert data from virtual format for register REGNUM - to raw format for register REGNUM. */ - -#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) {bcopy ((FROM), (TO), 4);} - -/* Return the GDB type object for the "standard" data type - of data in register N. */ - -#define REGISTER_VIRTUAL_TYPE(N) (builtin_type_int) - -/* Store the address of the place in which to copy the structure the - subroutine will return. This is called from call_function. */ - -#define STORE_STRUCT_RETURN(ADDR, SP) \ - { (SP) -= sizeof (ADDR); \ - write_memory ((SP), &(ADDR), sizeof (ADDR)); } - -/* Extract from an array REGBUF containing the (raw) register state - a function return value of type TYPE, and copy that, in virtual format, - into VALBUF. */ - -#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ - bcopy (REGBUF, VALBUF, TYPE_LENGTH (TYPE)) - -/* Write into appropriate registers a function return value - of type TYPE, given in virtual format. */ - -#define STORE_RETURN_VALUE(TYPE,VALBUF) \ - write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE)) - -/* Extract from an array REGBUF containing the (raw) register state - the address in which a function should return its structure value, - as a CORE_ADDR (or an expression that can be used as one). */ - -#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(int *)(REGBUF)) - - -/* Describe the pointer in each stack frame to the previous stack frame - (its caller). */ - -/* FRAME_CHAIN takes a frame's nominal address - and produces the frame's chain-pointer. - - FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address - and produces the nominal address of the caller frame. - - However, if FRAME_CHAIN_VALID returns zero, - it means the given frame is the outermost one and has no caller. - In that case, FRAME_CHAIN_COMBINE is not used. */ - -#define FRAME_CHAIN(thisframe) \ - (outside_startup_file ((thisframe)->pc) ? \ - read_memory_integer ((thisframe)->frame, 4) :\ - 0) - -#ifdef KERNELDEBUG -#define KERNTEXT_BASE 0xfe000000 -#ifdef NEWVM -#define KERNSTACK_TOP (read_register(SP_REGNUM) + 0x2000) /* approximate */ -#else -/* #define KERNSTACK_TOP (P1PAGES << PGSHIFT) */ -#define KERNSTACK_TOP 0xfe000000 -#endif -extern int kernel_debugging; -#define FRAME_CHAIN_VALID(chain, thisframe) \ - (chain != 0 && \ - !kernel_debugging ? outside_startup_file(FRAME_SAVED_PC(thisframe)) :\ - (chain >= read_register(SP_REGNUM) && chain < KERNSTACK_TOP)) -#else -#define FRAME_CHAIN_VALID(chain, thisframe) \ - (chain != 0 && (outside_startup_file (FRAME_SAVED_PC (thisframe)))) -#endif - -#define FRAME_CHAIN_COMBINE(chain, thisframe) (chain) - -/* Define other aspects of the stack frame. */ - -/* A macro that tells us whether the function invocation represented - by FI does not have a frame on the stack associated with it. If it - does not, FRAMELESS is set to 1, else 0. */ -#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \ - FRAMELESS_LOOK_FOR_PROLOGUE(FI, FRAMELESS) - -#define FRAME_SAVED_PC(FRAME) (read_memory_integer ((FRAME)->frame + 4, 4)) - -#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame) - -#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame) - -/* Return number of args passed to a frame. - Can return -1, meaning no way to tell. */ - -#define FRAME_NUM_ARGS(numargs, fi) (numargs) = i386_frame_num_args(fi) - -/* Return number of bytes at start of arglist that are not really args. */ - -#define FRAME_ARGS_SKIP 8 - -/* Put here the code to store, into a struct frame_saved_regs, - the addresses of the saved registers of frame described by FRAME_INFO. - This includes special registers such as pc and fp saved in special - ways in the stack frame. sp is even more special: - the address we return for it IS the sp for the next frame. */ - -#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ -{ i386_frame_find_saved_regs ((frame_info), &(frame_saved_regs)); } - - -/* Discard from the stack the innermost frame, restoring all registers. */ - -#define POP_FRAME { i386_pop_frame (); } - -#define NEW_CALL_FUNCTION - -#if 0 -/* Interface definitions for kernel debugger KDB. */ - -/* Map machine fault codes into signal numbers. - First subtract 0, divide by 4, then index in a table. - Faults for which the entry in this table is 0 - are not handled by KDB; the program's own trap handler - gets to handle then. */ - -#define FAULT_CODE_ORIGIN 0 -#define FAULT_CODE_UNITS 4 -#define FAULT_TABLE \ -{ 0, 0, 0, 0, 0, 0, 0, 0, \ - 0, 0, 0, 0, 0, 0, 0, 0, \ - 0, 0, 0, 0, 0, 0, 0, 0} - -/* Start running with a stack stretching from BEG to END. - BEG and END should be symbols meaningful to the assembler. - This is used only for kdb. */ - -#define INIT_STACK(beg, end) {} - -/* Push the frame pointer register on the stack. */ -#define PUSH_FRAME_PTR {} - -/* Copy the top-of-stack to the frame pointer register. */ -#define POP_FRAME_PTR {} - -/* After KDB is entered by a fault, push all registers - that GDB thinks about (all NUM_REGS of them), - so that they appear in order of ascending GDB register number. - The fault code will be on the stack beyond the last register. */ - -#define PUSH_REGISTERS {} - -/* Assuming the registers (including processor status) have been - pushed on the stack in order of ascending GDB register number, - restore them and return to the address in the saved PC register. */ - -#define POP_REGISTERS {} -#endif diff --git a/gnu/usr.bin/gdb/config/m-i386g-sv32.h b/gnu/usr.bin/gdb/config/m-i386g-sv32.h deleted file mode 100644 index 3d69eea184e0..000000000000 --- a/gnu/usr.bin/gdb/config/m-i386g-sv32.h +++ /dev/null @@ -1,28 +0,0 @@ -/* Macro defintions for i386, running System V 3.2. - Copyright (C) 1989 Free Software Foundation, Inc. - -This file is part of GDB. - -GDB is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 1, or (at your option) -any later version. - -GDB is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GDB; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#include "m-i386gas.h" - -/* Apparently there is inconsistency among various System V's about what - the name of this field is. */ -#define U_FPSTATE(u) u.u_fps.u_fpstate - -/* TIOCGETC is defined in System V 3.2 termio.h, but struct tchars - is not. This makes problems for inflow.c. */ -#define TIOCGETC_BROKEN diff --git a/gnu/usr.bin/gdb/config/m-i386gas.h b/gnu/usr.bin/gdb/config/m-i386gas.h deleted file mode 100644 index fbd21385cc77..000000000000 --- a/gnu/usr.bin/gdb/config/m-i386gas.h +++ /dev/null @@ -1,37 +0,0 @@ -/* Macro definitions for i386 using the GNU object file format. - Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc. - -This file is part of GDB. - -GDB is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 1, or (at your option) -any later version. - -GDB is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GDB; see the file COPYING. If not, write to -the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ - -/* - * Changes for 80386 by Pace Willisson (pace@prep.ai.mit.edu) - * July 1988 - * - * i386gnu: COFF_ENCAPSULATE - */ - - -#define COFF_ENCAPSULATE - -#include "m-i386.h" - - -#define NAMES_HAVE_UNDERSCORE - -#undef COFF_FORMAT -#define READ_DBX_FORMAT - |