Virgin import of gcc from EGCS 1.1.2

1 files changed, 152 insertions, 197 deletions

diff --git a/contrib/gcc/config/i386/freebsd.h.fixed b/contrib/gcc/config/i386/freebsd.h.fixed
index c4e9991c62f6..0a556fe01bdd 100644
--- a/contrib/gcc/config/i386/freebsd.h.fixed
+++ b/contrib/gcc/config/i386/freebsd.h.fixed
@@ -1,7 +1,8 @@
-/* Definitions of target machine for GNU compiler for Intel 80386
-   running FreeBSD.
-   Copyright (C) 1988, 1992, 1994 Free Software Foundation, Inc.
-   Contributed by Poul-Henning Kamp <phk@login.dkuug.dk>
+/* Definitions for Intel 386 running FreeBSD with ELF format
+   Copyright (C) 1996 Free Software Foundation, Inc.
+   Contributed by Eric Youngdale.
+   Modified for stabs-in-ELF by H.J. Lu.
+   Adapted from GNU/Linux version by John Polstra.
 
 This file is part of GNU CC.
 
@@ -20,231 +21,185 @@ along with GNU CC; see the file COPYING.  If not, write to
 the Free Software Foundation, 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.  */
 
-/* This goes away when the math-emulator is fixed */
-#define TARGET_CPU_DEFAULT 0400		/* TARGET_NO_FANCY_MATH_387 */
+#undef TARGET_VERSION
+#define TARGET_VERSION fprintf (stderr, " (i386 FreeBSD/ELF)");
 
-/* This is tested by i386gas.h.  */
-#define YES_UNDERSCORES
-
-/* Don't assume anything about the header files. */
-#define NO_IMPLICIT_EXTERN_C
-
-#include "i386/gstabs.h"
-
-/* Get perform_* macros to build libgcc.a.  */
-#include "i386/perform.h"
-
-#undef CPP_PREDEFINES
-#define CPP_PREDEFINES "-Dunix -Di386 -D__FreeBSD__ -D__386BSD__ -Asystem(unix) -Asystem(FreeBSD) -Acpu(i386) -Amachine(i386)"
-
-/* Like the default, except no -lg.  */
-#define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}"
-
-#undef SIZE_TYPE
-#define SIZE_TYPE "unsigned int"
-
-#undef PTRDIFF_TYPE
-#define PTRDIFF_TYPE "int"
-
-#undef WCHAR_TYPE
-#define WCHAR_TYPE "short unsigned int"
-
-#define WCHAR_UNSIGNED 1
-
-#undef WCHAR_TYPE_SIZE
-#define WCHAR_TYPE_SIZE 16
-
-#define HAVE_ATEXIT
-
-/* There are conflicting reports about whether this system uses
-   a different assembler syntax.  wilson@cygnus.com says # is right.  */
-#undef COMMENT_BEGIN
-#define COMMENT_BEGIN "#"
-
-#undef ASM_APP_ON
-#define ASM_APP_ON "#APP\n"
+/* The svr4 ABI for the i386 says that records and unions are returned
+   in memory.  */
+/* On FreeBSD, we do not. */
+#undef DEFAULT_PCC_STRUCT_RETURN
+#define DEFAULT_PCC_STRUCT_RETURN 0
 
-#undef ASM_APP_OFF
-#define ASM_APP_OFF "#NO_APP\n"
-
-/* The following macros are stolen from i386v4.h */
-/* These have to be defined to get PIC code correct */
+/* This gets defined in tm.h->linux.h->svr4.h, and keeps us from using
+   libraries compiled with the native cc, so undef it. */
+#undef NO_DOLLAR_IN_LABEL
 
 /* This is how to output an element of a case-vector that is relative.
    This is only used for PIC code.  See comments by the `casesi' insn in
    i386.md for an explanation of the expression this outputs. */
-
 #undef ASM_OUTPUT_ADDR_DIFF_ELT
-#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL) \
+#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
   fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE)
 
 /* Indicate that jump tables go in the text section.  This is
    necessary when compiling PIC code.  */
+#define JUMP_TABLES_IN_TEXT_SECTION (flag_pic)
+
+/* Copy this from the svr4 specifications... */
+/* Define the register numbers to be used in Dwarf debugging information.
+   The SVR4 reference port C compiler uses the following register numbers
+   in its Dwarf output code:
+	0 for %eax (gnu regno = 0)
+	1 for %ecx (gnu regno = 2)
+	2 for %edx (gnu regno = 1)
+	3 for %ebx (gnu regno = 3)
+	4 for %esp (gnu regno = 7)
+	5 for %ebp (gnu regno = 6)
+	6 for %esi (gnu regno = 4)
+	7 for %edi (gnu regno = 5)
+   The following three DWARF register numbers are never generated by
+   the SVR4 C compiler or by the GNU compilers, but SDB on x86/svr4
+   believes these numbers have these meanings.
+	8  for %eip    (no gnu equivalent)
+	9  for %eflags (no gnu equivalent)
+	10 for %trapno (no gnu equivalent)
+   It is not at all clear how we should number the FP stack registers
+   for the x86 architecture.  If the version of SDB on x86/svr4 were
+   a bit less brain dead with respect to floating-point then we would
+   have a precedent to follow with respect to DWARF register numbers
+   for x86 FP registers, but the SDB on x86/svr4 is so completely
+   broken with respect to FP registers that it is hardly worth thinking
+   of it as something to strive for compatibility with.
+   The version of x86/svr4 SDB I have at the moment does (partially)
+   seem to believe that DWARF register number 11 is associated with
+   the x86 register %st(0), but that's about all.  Higher DWARF
+   register numbers don't seem to be associated with anything in
+   particular, and even for DWARF regno 11, SDB only seems to under-
+   stand that it should say that a variable lives in %st(0) (when
+   asked via an `=' command) if we said it was in DWARF regno 11,
+   but SDB still prints garbage when asked for the value of the
+   variable in question (via a `/' command).
+   (Also note that the labels SDB prints for various FP stack regs
+   when doing an `x' command are all wrong.)
+   Note that these problems generally don't affect the native SVR4
+   C compiler because it doesn't allow the use of -O with -g and
+   because when it is *not* optimizing, it allocates a memory
+   location for each floating-point variable, and the memory
+   location is what gets described in the DWARF AT_location
+   attribute for the variable in question.
+   Regardless of the severe mental illness of the x86/svr4 SDB, we
+   do something sensible here and we use the following DWARF
+   register numbers.  Note that these are all stack-top-relative
+   numbers.
+	11 for %st(0) (gnu regno = 8)
+	12 for %st(1) (gnu regno = 9)
+	13 for %st(2) (gnu regno = 10)
+	14 for %st(3) (gnu regno = 11)
+	15 for %st(4) (gnu regno = 12)
+	16 for %st(5) (gnu regno = 13)
+	17 for %st(6) (gnu regno = 14)
+	18 for %st(7) (gnu regno = 15)
+*/
+#undef DBX_REGISTER_NUMBER
+#define DBX_REGISTER_NUMBER(n) \
+((n) == 0 ? 0 \
+ : (n) == 1 ? 2 \
+ : (n) == 2 ? 1 \
+ : (n) == 3 ? 3 \
+ : (n) == 4 ? 6 \
+ : (n) == 5 ? 7 \
+ : (n) == 6 ? 5 \
+ : (n) == 7 ? 4 \
+ : ((n) >= FIRST_STACK_REG && (n) <= LAST_STACK_REG) ? (n)+3 \
+ : (-1))
+
+/* Output assembler code to FILE to increment profiler label # LABELNO
+   for profiling a function entry.  */
 
-#define JUMP_TABLES_IN_TEXT_SECTION
-
-/* Don't default to pcc-struct-return, because gcc is the only compiler, and
-   we want to retain compatibility with older gcc versions.  */
-#define DEFAULT_PCC_STRUCT_RETURN 0
-
-/* Profiling routines, partially copied from i386/osfrose.h.  */
-
-/* Redefine this to use %eax instead of %edx.  */
 #undef FUNCTION_PROFILER
 #define FUNCTION_PROFILER(FILE, LABELNO)  \
 {									\
   if (flag_pic)								\
     {									\
-      fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%eax\n",		\
+      fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%edx\n",		\
 	       LPREFIX, (LABELNO));					\
       fprintf (FILE, "\tcall *mcount@GOT(%%ebx)\n");			\
     }									\
   else									\
     {									\
-      fprintf (FILE, "\tmovl $%sP%d,%%eax\n", LPREFIX, (LABELNO));	\
+      fprintf (FILE, "\tmovl $%sP%d,%%edx\n", LPREFIX, (LABELNO));	\
       fprintf (FILE, "\tcall mcount\n");				\
     }									\
 }
 
-/*
- * Some imports from svr4.h in support of shared libraries.
- * Currently, we need the DECLARE_OBJECT_SIZE stuff.
- */
-
-/* Define the strings used for the special svr4 .type and .size directives.
-   These strings generally do not vary from one system running svr4 to
-   another, but if a given system (e.g. m88k running svr) needs to use
-   different pseudo-op names for these, they may be overridden in the
-   file which includes this one.  */
-
-#define TYPE_ASM_OP	".type"
-#define SIZE_ASM_OP	".size"
-
-/* The following macro defines the format used to output the second
-   operand of the .type assembler directive.  Different svr4 assemblers
-   expect various different forms for this operand.  The one given here
-   is just a default.  You may need to override it in your machine-
-   specific tm.h file (depending upon the particulars of your assembler).  */
-
-#define TYPE_OPERAND_FMT	"@%s"
-
-/* Write the extra assembler code needed to declare a function's result.
-   Most svr4 assemblers don't require any special declaration of the
-   result value, but there are exceptions.  */
+#undef SIZE_TYPE
+#define SIZE_TYPE "unsigned int"
+ 
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE "int"
+  
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "int"
+   
+#undef WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE BITS_PER_WORD
+    
+#undef CPP_PREDEFINES
+#define CPP_PREDEFINES "-Di386 -Dunix -D__ELF__ -D__FreeBSD__ -Asystem(unix) -Asystem(FreeBSD) -Acpu(i386) -Amachine(i386)"
 
-#ifndef ASM_DECLARE_RESULT
-#define ASM_DECLARE_RESULT(FILE, RESULT)
-#endif
+#undef CPP_SPEC
+#define CPP_SPEC "%(cpp_cpu) %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE}"
 
-/* These macros generate the special .type and .size directives which
-   are used to set the corresponding fields of the linker symbol table
-   entries in an ELF object file under SVR4.  These macros also output
-   the starting labels for the relevant functions/objects.  */
-
-/* Write the extra assembler code needed to declare a function properly.
-   Some svr4 assemblers need to also have something extra said about the
-   function's return value.  We allow for that here.  */
-
-#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)			\
-  do {									\
-    fprintf (FILE, "\t%s\t ", TYPE_ASM_OP);				\
-    assemble_name (FILE, NAME);						\
-    putc (',', FILE);							\
-    fprintf (FILE, TYPE_OPERAND_FMT, "function");			\
-    putc ('\n', FILE);							\
-    ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));			\
-    ASM_OUTPUT_LABEL(FILE, NAME);					\
-  } while (0)
-
-/* Write the extra assembler code needed to declare an object properly.  */
-
-#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)			\
-  do {									\
-    fprintf (FILE, "\t%s\t ", TYPE_ASM_OP);				\
-    assemble_name (FILE, NAME);						\
-    putc (',', FILE);							\
-    fprintf (FILE, TYPE_OPERAND_FMT, "object");				\
-    putc ('\n', FILE);							\
-    size_directive_output = 0;						\
-    if (!flag_inhibit_size_directive && DECL_SIZE (DECL))		\
-      {									\
-        size_directive_output = 1;					\
-	fprintf (FILE, "\t%s\t ", SIZE_ASM_OP);				\
-	assemble_name (FILE, NAME);					\
-	fprintf (FILE, ",%d\n",  int_size_in_bytes (TREE_TYPE (DECL)));	\
-      }									\
-    ASM_OUTPUT_LABEL(FILE, NAME);					\
-  } while (0)
-
-/* Output the size directive for a decl in rest_of_decl_compilation
-   in the case where we did not do so before the initializer.
-   Once we find the error_mark_node, we know that the value of
-   size_directive_output was set
-   by ASM_DECLARE_OBJECT_NAME when it was run for the same decl.  */
-
-#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)        \
-do {                                                                    \
-     char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);                  \
-     if (!flag_inhibit_size_directive && DECL_SIZE (DECL)	        \
-         && ! AT_END && TOP_LEVEL                                       \
-         && DECL_INITIAL (DECL) == error_mark_node                      \
-         && !size_directive_output)                                     \
-       {                                                                \
-         fprintf (FILE, "\t%s\t ", SIZE_ASM_OP);                        \
-	 assemble_name (FILE, name);                                    \
-	 fprintf (FILE, ",%d\n",  int_size_in_bytes (TREE_TYPE (DECL)));\
-	}								\
-   } while (0)
-
-
-/* This is how to declare the size of a function.  */
-
-#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)			\
-  do {									\
-    if (!flag_inhibit_size_directive)					\
-      {									\
-        char label[256];						\
-	static int labelno;						\
-	labelno++;							\
-	ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno);		\
-	ASM_OUTPUT_INTERNAL_LABEL (FILE, "Lfe", labelno);		\
-	fprintf (FILE, "\t%s\t ", SIZE_ASM_OP);				\
-	assemble_name (FILE, (FNAME));					\
-        fprintf (FILE, ",");						\
-	assemble_name (FILE, label);					\
-        fprintf (FILE, "-");						\
-	assemble_name (FILE, (FNAME));					\
-	putc ('\n', FILE);						\
-      }									\
-  } while (0)
-
-#define ASM_SPEC   " %| %{fpic:-k} %{fPIC:-k}"
-#define LINK_SPEC \
-  "%{!nostdlib:%{!r*:%{!e*:-e start}}} -dc -dp %{static:-Bstatic} %{assert*}"
-
-/* This is defined when gcc is compiled in the BSD-directory-tree, and must
- * make up for the gap to all the stuff done in the GNU-makefiles.
+#undef	LIB_SPEC
+#if 1
+/* We no longer link with libc_p.a or libg.a by default. If you
+ * want to profile or debug the C library, please add
+ * -lc_p or -ggdb to LDFLAGS at the link time, respectively.
  */
+#define LIB_SPEC \
+  "%{!shared: %{mieee-fp:-lieee} %{p:-lgmon} %{pg:-lgmon} \
+     %{!ggdb:-lc} %{ggdb:-lg}}"
+#else
+#define LIB_SPEC \
+  "%{!shared: \
+     %{mieee-fp:-lieee} %{p:-lgmon -lc_p} %{pg:-lgmon -lc_p} \
+       %{!p:%{!pg:%{!g*:-lc} %{g*:-lg}}}}"
+#endif
 
-#ifdef FREEBSD_NATIVE
+/* Provide a LINK_SPEC appropriate for FreeBSD.  Here we provide support
+   for the special GCC options -static and -shared, which allow us to
+   link things in one of these three modes by applying the appropriate
+   combinations of options at link-time. We like to support here for
+   as many of the other GNU linker options as possible. But I don't
+   have the time to search for those flags. I am sure how to add
+   support for -soname shared_object_name. H.J.
+
+   I took out %{v:%{!V:-V}}. It is too much :-(. They can use
+   -Wl,-V.
+
+   When the -shared link option is used a final link is not being
+   done.  */
+
+#undef	LINK_SPEC
+#define LINK_SPEC "-m elf_i386 %{shared:-shared} \
+  %{!shared: \
+    %{!ibcs: \
+      %{!static: \
+	%{rdynamic:-export-dynamic} \
+	%{!dynamic-linker:-dynamic-linker /usr/libexec/ld-elf.so.1}} \
+	%{static:-static}}}"
 
-#define INCLUDE_DEFAULTS { \
-	{ "/usr/include", 0 }, \
-	{ "/usr/include/g++", 1 }, \
-	{ 0, 0} \
-	}
+/* Get perform_* macros to build libgcc.a.  */
 
-#undef MD_EXEC_PREFIX
-#define MD_EXEC_PREFIX "/usr/libexec/"
+/* A C statement to output to the stdio stream FILE an assembler
+   command to advance the location counter to a multiple of 1<<LOG
+   bytes if it is within MAX_SKIP bytes.
 
-#undef STANDARD_STARTFILE_PREFIX
-#define STANDARD_STARTFILE_PREFIX "/usr/lib"
+   This is used to align code labels according to Intel recommendations.  */
 
-#if 0 /* This is very wrong!!! */
-#define DEFAULT_TARGET_MACHINE "i386-unknown-freebsd_1.0"
-#define GPLUSPLUS_INCLUDE_DIR "/usr/local/lib/gcc-lib/i386-unknown-freebsd_1.0/2.5.8/include"
-#define TOOL_INCLUDE_DIR "/usr/local/i386-unknown-freebsd_1.0/include"
-#define GCC_INCLUDE_DIR "/usr/local/lib/gcc-lib/i386-unknown-freebsd_1.0/2.5.8/include"
+#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
+#define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
+  if ((LOG)!=0) \
+    if ((MAX_SKIP)==0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
+    else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP))
 #endif
-
-#endif /* FREEBSD_NATIVE */