1 files changed, 457 insertions, 0 deletions

diff --git a/sys/i386/ibcs2/imgact_coff.c b/sys/i386/ibcs2/imgact_coff.c
new file mode 100644
index 000000000000..5d57d1804eb8
--- /dev/null
+++ b/sys/i386/ibcs2/imgact_coff.c
@@ -0,0 +1,457 @@
+/*-
+ * Copyright (c) 1994 Sean Eric Fagan
+ * Copyright (c) 1994 Søren Schmidt
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer
+ *    in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software withough specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *	$Id: imgact_coff.c,v 1.11 1994/10/12 19:38:03 sos Exp $
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/resourcevar.h>
+#include <sys/exec.h>
+#include <sys/mman.h>
+#include <sys/imgact.h>
+#include <sys/kernel.h>
+#include <sys/file.h>
+#include <sys/malloc.h>
+#include <sys/mount.h>
+#include <sys/sysent.h>
+#include <vm/vm.h>
+#include <vm/vm_kern.h>
+#include "coff.h"
+#include "ibcs2.h"
+
+static int
+load_coff_section(vmspace, vp, offset, vmaddr, memsz, filsz, prot)
+	struct vmspace *vmspace;
+	struct vnode *vp;
+	vm_offset_t offset;
+	caddr_t vmaddr;
+	size_t memsz, filsz;
+	vm_prot_t prot;
+{
+	size_t map_len;
+	vm_offset_t map_offset;
+	caddr_t map_addr;
+	int error;
+	unsigned char *data_buf = 0;
+	size_t copy_len;
+
+	map_offset = trunc_page(offset);
+	map_addr = (caddr_t)trunc_page(vmaddr);
+
+	if (memsz > filsz) {
+		/*
+		 * We have the stupid situation that
+		 * the section is longer than it is on file,
+		 * which means it has zero-filled areas, and
+		 * we have to work for it.  Stupid iBCS!
+		 */
+		map_len = trunc_page(offset + filsz) - trunc_page(map_offset);
+	} else {
+		/*
+		 * The only stuff we care about is on disk, and we
+		 * don't care if we map in more than is really there.
+		 */
+		map_len = round_page(offset + filsz) - trunc_page(map_offset);
+	}
+
+if (ibcs2_trace & IBCS2_TRACE_COFF) {
+printf("%s(%d):  vm_mmap(&vmspace->vm_map, &0x%08lx, 0x%x, 0x%x, "
+	"VM_PROT_ALL, MAP_FILE | MAP_PRIVATE | MAP_FIXED, vp, 0x%x)\n",
+	__FILE__, __LINE__, map_addr, map_len, prot, map_offset);
+}
+
+	if (error = vm_mmap(&vmspace->vm_map,
+			     &map_addr,
+			     map_len,
+			     prot,
+			     VM_PROT_ALL,
+			     MAP_FILE | MAP_PRIVATE | MAP_FIXED,
+			     vp,
+			     map_offset))
+		return error;
+
+	if (memsz == filsz) {
+		/* We're done! */
+		return 0;
+	}
+
+	/*
+	 * Now we have screwball stuff, to accomodate stupid COFF.
+	 * We have to map the remaining bit of the file into the kernel's
+	 * memory map, allocate some anonymous memory, copy that last
+	 * bit into it, and then we're done. *sigh*
+	 * For clean-up reasons, we actally map in the file last.
+	 */
+
+	copy_len = (offset + filsz) - trunc_page(offset + filsz);
+	map_addr = (caddr_t)trunc_page(vmaddr + filsz);
+	map_len = round_page(memsz) - trunc_page(filsz);
+
+if (ibcs2_trace & IBCS2_TRACE_COFF) {
+printf("%s(%d): vm_allocate(&vmspace->vm_map, &0x%08lx, 0x%x, FALSE)\n",
+	__FILE__, __LINE__, map_addr, map_len);
+}
+
+	if (error = vm_allocate(&vmspace->vm_map, &map_addr, map_len, FALSE))
+		return error;
+
+	if (error = vm_mmap(kernel_map, &data_buf, PAGE_SIZE,
+			     VM_PROT_READ, VM_PROT_READ, MAP_FILE,
+			     vp, trunc_page(offset + filsz)))
+		return error;
+
+	bcopy(data_buf, map_addr, copy_len);
+
+	if (vm_deallocate(kernel_map, data_buf, PAGE_SIZE))
+		panic("load_coff_section vm_deallocate failed");
+
+	return 0;
+}
+				 
+int
+coff_load_file(struct proc *p, char *name)
+{
+  	struct vmspace *vmspace = p->p_vmspace;
+  	int error;
+  	struct nameidata nd;
+  	struct vnode *vnodep;
+  	struct vattr attr;
+  	struct filehdr *fhdr;
+  	struct aouthdr *ahdr;
+  	struct scnhdr *scns;
+  	char *ptr = 0;
+  	int nscns;
+  	unsigned long text_offset = 0, text_address = 0, text_size = 0;
+  	unsigned long data_offset = 0, data_address = 0, data_size = 0;
+  	unsigned long bss_size = 0;
+  	int i;
+
+  	nd.ni_cnd.cn_nameiop = LOOKUP;
+	nd.ni_cnd.cn_flags = LOCKLEAF | FOLLOW | SAVENAME;
+	nd.ni_cnd.cn_proc = curproc;
+	nd.ni_cnd.cn_cred = curproc->p_cred->pc_ucred;
+  	nd.ni_segflg = UIO_SYSSPACE;
+  	nd.ni_dirp = name;
+	
+  	error = namei(&nd);
+  	if (error)
+    		return error;
+	
+  	vnodep = nd.ni_vp;
+  	if (vnodep == NULL)
+    		return ENOEXEC;
+	
+  	if (vnodep->v_writecount) {
+    		error = ETXTBSY;
+    		goto fail;
+  	}
+
+  	if (error = VOP_GETATTR(vnodep, &attr, p->p_ucred, p))
+    		goto fail;
+
+  	if ((vnodep->v_mount->mnt_flag & MNT_NOEXEC)
+	    || ((attr.va_mode & 0111) == 0)
+	    || (attr.va_type != VREG))
+    		goto fail;
+
+  	if (attr.va_size == 0) {
+    		error = ENOEXEC;
+    		goto fail;
+  	}
+
+  	if (error = VOP_ACCESS(vnodep, VEXEC, p->p_ucred, p))
+    		goto fail;
+
+  	if (error = VOP_OPEN(vnodep, FREAD, p->p_ucred, p))
+    		goto fail;
+
+  	if (error = vm_mmap(kernel_map, &ptr, PAGE_SIZE, VM_PROT_READ,
+		       	    VM_PROT_READ, MAP_FILE, vnodep, 0))
+    	goto fail;
+
+  	fhdr = (struct filehdr *)ptr;
+
+  	if (fhdr->f_magic != I386_COFF) {
+    		error = ENOEXEC;
+    		goto dealloc_and_fail;
+  	}
+
+  	nscns = fhdr->f_nscns;
+
+  	if ((nscns * sizeof(struct scnhdr)) > PAGE_SIZE) {
+    		/*
+     		 * XXX -- just fail.  I'm so lazy.
+     		 */
+    		error = ENOEXEC;
+    		goto dealloc_and_fail;
+  	}
+
+  	ahdr = (struct aouthdr*)(ptr + sizeof(struct filehdr));
+
+  	scns = (struct scnhdr*)(ptr + sizeof(struct filehdr)
+			  + sizeof(struct aouthdr));
+
+  	for (i = 0; i < nscns; i++) {
+    		if (scns[i].s_flags & STYP_NOLOAD)
+      			continue;
+    		else if (scns[i].s_flags & STYP_TEXT) {
+      			text_address = scns[i].s_vaddr;
+      			text_size = scns[i].s_size;
+      			text_offset = scns[i].s_scnptr;
+    		} 
+		else if (scns[i].s_flags & STYP_DATA) {
+      			data_address = scns[i].s_vaddr;
+      			data_size = scns[i].s_size;
+      			data_offset = scns[i].s_scnptr;
+    		} else if (scns[i].s_flags & STYP_BSS) {
+      			bss_size = scns[i].s_size;
+    		}
+  	}
+
+  	if (error = load_coff_section(vmspace, vnodep, text_offset,
+				      (caddr_t)text_address,
+				      text_size, text_size,
+				      VM_PROT_READ | VM_PROT_EXECUTE)) {
+    		goto dealloc_and_fail;
+  	}
+  	if (error = load_coff_section(vmspace, vnodep, data_offset,
+				      (caddr_t)data_address,
+				      data_size + bss_size, data_size,
+				      VM_PROT_ALL)) {
+    		goto dealloc_and_fail;
+  	}
+
+  	error = 0;
+
+ 	dealloc_and_fail:
+  	if (vm_deallocate(kernel_map, ptr, PAGE_SIZE))
+    		panic(__FUNCTION__ " vm_deallocate failed");
+
+ fail:
+  	vput(nd.ni_vp);
+  	FREE(nd.ni_cnd.cn_pnbuf, M_NAMEI);
+  	return error;
+}
+
+int
+exec_coff_imgact(iparams)
+	struct image_params *iparams;
+{
+	struct filehdr *fhdr = (struct filehdr*)iparams->image_header;
+	struct aouthdr *ahdr;
+	struct scnhdr *scns;
+	int i;
+	struct vmspace *vmspace = iparams->proc->p_vmspace;
+	unsigned long vmaddr;
+	int nscns;
+	int error, len;
+	extern struct sysentvec ibcs2_svr3_sysvec;
+	unsigned long text_offset = 0, text_address = 0, text_size = 0;
+	unsigned long data_offset = 0, data_address = 0, data_size = 0;
+	unsigned long bss_size = 0;
+	int need_hack_p;
+	unsigned long data_end;
+	unsigned long data_map_start, data_map_len, data_map_addr = 0;
+	unsigned long bss_address, bss_map_start, data_copy_len, bss_map_len;
+	unsigned char *data_buf = 0;
+	caddr_t hole;
+
+	if (fhdr->f_magic != I386_COFF ||
+	    !(fhdr->f_flags & F_EXEC)) {
+
+if (ibcs2_trace & IBCS2_TRACE_COFF) {
+printf("%s(%d): return -1\n", __FILE__, __LINE__);
+}
+
+	  	return -1;
+	}
+
+	nscns = fhdr->f_nscns;
+	if ((nscns * sizeof(struct scnhdr)) > PAGE_SIZE) {
+	  	/*
+	   	 * For now, return an error -- need to be able to
+	   	 * read in all of the section structures.
+	   	 */
+
+if (ibcs2_trace & IBCS2_TRACE_COFF) {
+printf("%s(%d): return -1\n", __FILE__, __LINE__);
+}
+	  	return -1;
+	}
+
+	ahdr = (struct aouthdr*)((char*)(iparams->image_header) +
+				 sizeof(struct filehdr));
+	iparams->entry_addr = ahdr->entry;
+
+	scns = (struct scnhdr*)((char*)(iparams->image_header) +
+				sizeof(struct filehdr) +
+				sizeof(struct aouthdr));
+
+	if (error = exec_extract_strings(iparams)) {
+
+if (ibcs2_trace & IBCS2_TRACE_COFF) {
+printf("%s(%d):  return %d\n", __FILE__, __LINE__, error);
+}
+	  	return error;
+	}
+
+	exec_new_vmspace(iparams);
+
+	for (i = 0; i < nscns; i++) {
+
+if (ibcs2_trace & IBCS2_TRACE_COFF) {
+printf("i = %d, scns[i].s_name = %s, scns[i].s_vaddr = %08lx, "
+       "scns[i].s_scnptr = %d\n", i, scns[i].s_name,
+       scns[i].s_vaddr, scns[i].s_scnptr);
+}
+	  if (scns[i].s_flags & STYP_NOLOAD) {
+	    	/*
+	     	 * A section that is not loaded, for whatever
+	     	 * reason.  It takes precedance over other flag
+	     	 * bits...
+	     	 */
+	    	continue;
+	  } else if (scns[i].s_flags & STYP_TEXT) {
+	    	text_address = scns[i].s_vaddr;
+	    	text_size = scns[i].s_size;
+	    	text_offset = scns[i].s_scnptr;
+	  } else if (scns[i].s_flags & STYP_DATA) {
+	    	/* .data section */
+	    	data_address = scns[i].s_vaddr;
+	    	data_size = scns[i].s_size;
+	    	data_offset = scns[i].s_scnptr;
+	  } else if (scns[i].s_flags & STYP_BSS) {
+	    	/* .bss section */
+	    	bss_size = scns[i].s_size;
+	  } else if (scns[i].s_flags & STYP_LIB) {
+	    	char *buf = 0, *ptr;
+	    	int foff = trunc_page(scns[i].s_scnptr);
+	    	int off = scns[i].s_scnptr - foff;
+	    	int len = round_page(scns[i].s_size + PAGE_SIZE);
+	    	int j;
+
+	    	if (error = vm_mmap(kernel_map, &buf, len,
+				 VM_PROT_READ, VM_PROT_READ, MAP_FILE,
+				 iparams->vnodep, foff)) {
+	      		return ENOEXEC;
+	    	}
+	    	for (j = off; j < scns[i].s_size + off; j++) {
+	      		char *libname;
+	      		libname = buf + j + 4 * *(long*)(buf + j + 4);
+	      		j += 4* *(long*)(buf + j);
+
+if (ibcs2_trace & IBCS2_TRACE_COFF) {
+printf("%s(%d):  shared library %s\n", __FILE__, __LINE__, libname);
+}
+	      		error = coff_load_file(iparams->proc, libname);
+	      		if (error)
+			break;
+	    	}
+	    	if (vm_deallocate(kernel_map, buf, len))
+	      		panic("exec_coff_imgact vm_deallocate failed");
+	    	if (error)
+	      		return error;
+	  	}
+	}
+	/*
+	 * Map in .text now
+	 */
+
+if (ibcs2_trace & IBCS2_TRACE_COFF) {
+printf("%s(%d):  load_coff_section(vmspace, "
+	"iparams->vnodep, %08lx, %08lx, 0x%x, 0x%x, 0x%x)\n",
+	__FILE__, __LINE__, text_offset, text_address,
+	text_size, text_size, VM_PROT_READ | VM_PROT_EXECUTE);
+}
+	if (error = load_coff_section(vmspace, iparams->vnodep,
+				      text_offset, (caddr_t)text_address,
+				      text_size, text_size,
+				      VM_PROT_READ | VM_PROT_EXECUTE)) {
+
+if (ibcs2_trace & IBCS2_TRACE_COFF) {
+printf("%s(%d): error = %d\n", __FILE__, __LINE__, error);
+}
+		return error;
+       	}
+	/*
+	 * Map in .data and .bss now
+	 */
+
+
+if (ibcs2_trace & IBCS2_TRACE_COFF) {
+printf("%s(%d): load_coff_section(vmspace, "
+	"iparams->vnodep, 0x%08lx, 0x%08lx, 0x%x, 0x%x, 0x%x)\n",
+	__FILE__, __LINE__, data_offset, data_address,
+	data_size + bss_size, data_size, VM_PROT_ALL);
+}
+	if (error = load_coff_section(vmspace, iparams->vnodep,
+				      data_offset, (caddr_t)data_address,
+				      data_size + bss_size, data_size,
+				      VM_PROT_ALL)) {
+
+if (ibcs2_trace & IBCS2_TRACE_COFF) {
+printf("%s(%d): error = %d\n", __FILE__, __LINE__, error);
+}
+		return error;
+	}
+
+	iparams->interpreted = 0;
+	iparams->proc->p_sysent = &ibcs2_svr3_sysvec;
+
+	vmspace->vm_tsize = round_page(text_size) >> PAGE_SHIFT;
+	vmspace->vm_dsize = round_page(data_size + bss_size) >> PAGE_SHIFT;
+	vmspace->vm_taddr = (caddr_t)text_address;
+	vmspace->vm_daddr = (caddr_t)data_address;
+
+	hole = (caddr_t)trunc_page(vmspace->vm_daddr) + ctob(vmspace->vm_dsize);
+
+
+if (ibcs2_trace & IBCS2_TRACE_COFF) {
+printf("%s(%d): vm_allocate(&vmspace->vm_map, &0x%08lx, 1, FALSE)\n",
+	__FILE__, __LINE__, hole);
+printf("imgact: error = %d\n", error);
+}
+	error = vm_allocate(&vmspace->vm_map, &hole, 1, FALSE);
+
+if (ibcs2_trace & IBCS2_TRACE_COFF) {
+printf("IBCS2: start vm_dsize = 0x%x, vm_daddr = 0x%x end = 0x%x\n", 
+	ctob(vmspace->vm_dsize), vmspace->vm_daddr,
+	ctob(vmspace->vm_dsize) + vmspace->vm_daddr );
+printf("%s(%d):  returning successfully!\n", __FILE__, __LINE__);
+}
+	return 0;
+}
+
+/*
+ * Tell kern_execve.c about it, with a little help from the linker.
+ * Since `const' objects end up in the text segment, TEXT_SET is the
+ * correct directive to use.
+ */
+const struct execsw coff_execsw = { exec_coff_imgact, "coff" };
+TEXT_SET(execsw_set, coff_execsw);