Correctly check gcc version.
[deliverable/binutils-gdb.git] / ld / pe-dll.c
index 1752d6666f4530323d3348ade53093490b9729d2..6b8b1af007de0e7cf4a8032076e543fa9739b340 100644 (file)
@@ -1,5 +1,5 @@
 /* Routines to help build PEI-format DLLs (Win32 etc)
-   Copyright (C) 1998, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
    Written by DJ Delorie <dj@cygnus.com>
 
    This file is part of GLD, the Gnu Linker.
@@ -38,6 +38,7 @@
 #include "coff/internal.h"
 #include "../bfd/libcoff.h"
 #include "deffile.h"
+#include "pe-dll.h"
 
 /************************************************************************
 
@@ -59,6 +60,8 @@ int pe_dll_export_everything = 0;
 int pe_dll_do_default_excludes = 1;
 int pe_dll_kill_ats = 0;
 int pe_dll_stdcall_aliases = 0;
+int pe_dll_warn_dup_exports = 0;
+int pe_dll_compat_implib = 0;
 
 /************************************************************************
 
@@ -71,18 +74,21 @@ static bfd_vma image_base;
 static bfd *filler_bfd;
 static struct sec *edata_s, *reloc_s;
 static unsigned char *edata_d, *reloc_d;
-static int edata_sz, reloc_sz;
+static size_t edata_sz, reloc_sz;
 
 typedef struct {
   char *target_name;
   char *object_target;
-  int imagebase_reloc;
+  unsigned int imagebase_reloc;
   int pe_arch;
   int bfd_arch;
   int underscored;
 } pe_details_type;
 
 #define PE_ARCH_i386   1
+#define PE_ARCH_sh     2
+#define PE_ARCH_mips   3
+#define PE_ARCH_arm    4
 
 static pe_details_type pe_detail_list[] = {
   {
@@ -93,7 +99,31 @@ static pe_details_type pe_detail_list[] = {
     bfd_arch_i386,
     1
   },
-  { 0 }
+  {
+    "pei-shl",
+    "pe-shl",
+    16 /* R_SH_IMAGEBASE */,
+    PE_ARCH_sh,
+    bfd_arch_sh,
+    1
+  },
+  {
+    "pei-mips",
+    "pe-mips",
+    34 /* MIPS_R_RVA */,
+    PE_ARCH_mips,
+    bfd_arch_mips,
+    0
+  },
+  {
+    "pei-arm-little",
+    "pe-arm-little",
+    11 /* ARM_RVA32 */,
+    PE_ARCH_arm,
+    bfd_arch_arm,
+    0
+  },
+  { NULL, NULL, 0, 0, 0, 0 }
 };
 
 static pe_details_type *pe_details;
@@ -102,7 +132,7 @@ static pe_details_type *pe_details;
 
 void
 pe_dll_id_target (target)
-     char *target;
+     const char *target;
 {
   int i;
   for (i=0; pe_detail_list[i].target_name; i++)
@@ -227,7 +257,7 @@ auto_export (d, n)
 
 static void
 process_def_file (abfd, info)
-     bfd *abfd;
+     bfd *abfd ATTRIBUTE_UNUSED;
      struct bfd_link_info *info;
 {
   int i, j;
@@ -337,20 +367,22 @@ process_def_file (abfd, info)
     {
       if (i > 0 && strcmp (e[i].name, e[i - 1].name) == 0)
        {
-         /* This is a duplicate */
+         /* This is a duplicate */
          if (e[j - 1].ordinal != -1
              && e[i].ordinal != -1
              && e[j - 1].ordinal != e[i].ordinal)
            {
-             /* xgettext:c-format */
-             einfo (_("%XError, duplicate EXPORT with oridinals: %s (%d vs %d)\n"),
-                    e[j - 1].name, e[j - 1].ordinal, e[i].ordinal);
+             if (pe_dll_warn_dup_exports)
+               /* xgettext:c-format */
+               einfo (_("%XError, duplicate EXPORT with oridinals: %s (%d vs %d)\n"),
+                      e[j - 1].name, e[j - 1].ordinal, e[i].ordinal);
            }
          else
            {
-             /* xgettext:c-format */
-             einfo (_("Warning, duplicate EXPORT: %s\n"),
-                    e[j - 1].name);
+             if (pe_dll_warn_dup_exports)
+               /* xgettext:c-format */
+               einfo (_("Warning, duplicate EXPORT: %s\n"),
+                      e[j - 1].name);
            }
          if (e[i].ordinal)
            e[j - 1].ordinal = e[i].ordinal;
@@ -383,13 +415,22 @@ process_def_file (abfd, info)
                                   name,
                                   false, false, true);
 
-      if (blhe && (blhe->type == bfd_link_hash_defined))
+      if (blhe
+          && (blhe->type == bfd_link_hash_defined
+             || (blhe->type == bfd_link_hash_common)))
        {
          count_exported++;
          if (!pe_def_file->exports[i].flag_noname)
            count_exported_byname++;
-         exported_symbol_offsets[i] = blhe->u.def.value;
-         exported_symbol_sections[i] = blhe->u.def.section;
+
+         /* Only fill in the sections. The actual offsets are computed
+            in fill_exported_offsets() after common symbols are laid
+            out.  */
+          if (blhe->type == bfd_link_hash_defined)
+           exported_symbol_sections[i] = blhe->u.def.section;
+         else
+           exported_symbol_sections[i] = blhe->u.c.p->section;
+         
          if (pe_def_file->exports[i].ordinal != -1)
            {
              if (max_ordinal < pe_def_file->exports[i].ordinal)
@@ -489,7 +530,7 @@ build_filler_bfd (include_edata)
 static void
 generate_edata (abfd, info)
      bfd *abfd;
-     struct bfd_link_info *info;
+     struct bfd_link_info *info ATTRIBUTE_UNUSED;
 {
   int i, next_ordinal;
   int name_table_size = 0;
@@ -571,10 +612,44 @@ generate_edata (abfd, info)
              + name_table_size + strlen (dll_name) + 1);
 }
 
+/* Fill the exported symbol offsets. The preliminary work has already
+   been done in process_def_file().  */
+
+static void
+fill_exported_offsets (abfd, info)
+     bfd *abfd ATTRIBUTE_UNUSED;
+     struct bfd_link_info *info;
+{
+  int i;
+  struct bfd_link_hash_entry *blhe;
+  
+  for (i = 0; i < pe_def_file->num_exports; i++)
+    {
+      char *name = (char *) xmalloc (strlen (pe_def_file->exports[i].internal_name) + 2);
+      if (pe_details->underscored)
+       {
+         *name = '_';
+         strcpy (name + 1, pe_def_file->exports[i].internal_name);
+       }
+      else
+       strcpy (name, pe_def_file->exports[i].internal_name);
+
+      blhe = bfd_link_hash_lookup (info->hash,
+                                  name,
+                                  false, false, true);
+
+      if (blhe && (blhe->type == bfd_link_hash_defined))
+       {
+         exported_symbol_offsets[i] = blhe->u.def.value;
+        }
+      free (name);
+    }
+}
+
 static void
 fill_edata (abfd, info)
      bfd *abfd;
-     struct bfd_link_info *info;
+     struct bfd_link_info *info ATTRIBUTE_UNUSED;
 {
   int i, hint;
   unsigned char *edirectory;
@@ -614,6 +689,8 @@ fill_edata (abfd, info)
   bfd_put_32 (abfd, ERVA (enameptrs), edata_d + 32);
   bfd_put_32 (abfd, ERVA (eordinals), edata_d + 36);
 
+  fill_exported_offsets (abfd, info);
+
   /* Ok, now for the filling in part */
   hint = 0;
   for (i = 0; i < export_table_size; i++)
@@ -723,13 +800,32 @@ generate_reloc (abfd, info)
                             + sym->section->output_offset
                             + sym->section->output_section->vma);
                  reloc_data[total_relocs].vma = sec_vma + relocs[i]->address;
-                 switch (relocs[i]->howto->bitsize*1000
-                         + relocs[i]->howto->rightshift)
+                 
+#define BITS_AND_SHIFT(bits, shift) (bits * 1000 | shift)
+                                   
+                 switch BITS_AND_SHIFT (relocs[i]->howto->bitsize,
+                                        relocs[i]->howto->rightshift)
                    {
-                   case 32000:
+                   case BITS_AND_SHIFT (32, 0):
                      reloc_data[total_relocs].type = 3;
                      total_relocs++;
                      break;
+                   case BITS_AND_SHIFT (16, 0):
+                     reloc_data[total_relocs].type = 2;
+                     total_relocs++;
+                     break;
+                   case BITS_AND_SHIFT (16, 16):
+                     reloc_data[total_relocs].type = 4;
+                     /* FIXME: we can't know the symbol's right value yet,
+                        but we probably can safely assume that CE will relocate
+                        us in 64k blocks, so leaving it zero is safe.  */
+                     reloc_data[total_relocs].extra = 0;
+                     total_relocs++;
+                     break;
+                   case BITS_AND_SHIFT (26, 2):
+                     reloc_data[total_relocs].type = 5;
+                     total_relocs++;
+                     break;
                    default:
                      /* xgettext:c-format */
                      einfo (_("%XError: %d-bit reloc in dll\n"),
@@ -754,13 +850,18 @@ generate_reloc (abfd, info)
   for (i = 0; i < total_relocs; i++)
     {
       unsigned long this_page = (reloc_data[i].vma >> 12);
+      
       if (this_page != sec_page)
        {
          reloc_sz = (reloc_sz + 3) & ~3;       /* 4-byte align */
          reloc_sz += 8;
          sec_page = this_page;
        }
+      
       reloc_sz += 2;
+      
+      if (reloc_data[i].type == 4)
+       reloc_sz += 2;
     }
   reloc_sz = (reloc_sz + 3) & ~3;      /* 4-byte align */
 
@@ -844,7 +945,7 @@ quoteput (s, f, needs_quotes)
 
 void
 pe_dll_generate_def_file (pe_out_def_filename)
-     char *pe_out_def_filename;
+     const char *pe_out_def_filename;
 {
   int i;
   FILE *out = fopen (pe_out_def_filename, "w");
@@ -1266,6 +1367,31 @@ static unsigned char jmp_ix86_bytes[] = {
   0xff, 0x25, 0x00, 0x00, 0x00, 0x00, 0x90, 0x90
 };
 
+/*
+ *_function:
+ *     mov.l   ip+8,r0
+ *     mov.l   @r0,r0
+ *     jmp     @r0
+ *     nop
+ *     .dw     __imp_function
+ */
+
+static unsigned char jmp_sh_bytes[] = {
+  0x01, 0xd0, 0x02, 0x60, 0x2b, 0x40, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
+/*
+ *_function:
+ *     lui     $t0,<high:__imp_function>
+ *     lw      $t0,<low:__imp_function>
+ *     jr      $t0
+ *     nop
+ */
+
+static unsigned char jmp_mips_bytes[] = {
+  0x00, 0x00, 0x08, 0x3c,  0x00, 0x00, 0x08, 0x8d,
+  0x08, 0x00, 0x00, 0x01,  0x00, 0x00, 0x00, 0x00
+};
 
 static bfd *
 make_one (exp, parent)
@@ -1273,12 +1399,12 @@ make_one (exp, parent)
      bfd *parent;
 {
   asection *tx, *id7, *id5, *id4, *id6;
-  unsigned char *td, *d7, *d5, *d4, *d6;
+  unsigned char *td, *d7, *d5, *d4, *d6 = NULL;
   int len;
   char *oname;
   bfd *abfd;
-  unsigned char *jmp_bytes;
-  int jmp_byte_count;
+  unsigned char *jmp_bytes = NULL;
+  int jmp_byte_count = 0;
 
   switch (pe_details->pe_arch)
     {
@@ -1286,6 +1412,14 @@ make_one (exp, parent)
       jmp_bytes = jmp_ix86_bytes;
       jmp_byte_count = sizeof (jmp_ix86_bytes);
       break;
+    case PE_ARCH_sh:
+      jmp_bytes = jmp_sh_bytes;
+      jmp_byte_count = sizeof (jmp_sh_bytes);
+      break;
+    case PE_ARCH_mips:
+      jmp_bytes = jmp_mips_bytes;
+      jmp_byte_count = sizeof (jmp_mips_bytes);
+      break;
     }
 
   oname = (char *) xmalloc (20);
@@ -1306,10 +1440,13 @@ make_one (exp, parent)
   id5 = quick_section (abfd, ".idata$5", SEC_HAS_CONTENTS, 2);
   id4 = quick_section (abfd, ".idata$4", SEC_HAS_CONTENTS, 2);
   id6 = quick_section (abfd, ".idata$6", SEC_HAS_CONTENTS, 2);
-  quick_symbol (abfd, U(""), exp->internal_name, "", tx, BSF_GLOBAL, 0);
+  if (! exp->flag_data)
+    quick_symbol (abfd, U(""), exp->internal_name, "", tx, BSF_GLOBAL, 0);
   quick_symbol (abfd, U("_head_"), dll_symname, "", UNDSEC, BSF_GLOBAL, 0);
   quick_symbol (abfd, U("__imp_"), exp->internal_name, "", id5, BSF_GLOBAL, 0);
-  quick_symbol (abfd, U("_imp__"), exp->internal_name, "", id5, BSF_GLOBAL, 0);
+  if (pe_dll_compat_implib)
+    quick_symbol (abfd, U("__imp_"), exp->internal_name, "", 
+                  id5, BSF_GLOBAL, 0);
 
   bfd_set_section_size (abfd, tx, jmp_byte_count);
   td = (unsigned char *) xmalloc (jmp_byte_count);
@@ -1320,6 +1457,14 @@ make_one (exp, parent)
     case PE_ARCH_i386:
       quick_reloc (abfd, 2, BFD_RELOC_32, 2);
       break;
+    case PE_ARCH_sh:
+      quick_reloc (abfd, 8, BFD_RELOC_32, 2);
+      break;
+    case PE_ARCH_mips:
+      quick_reloc (abfd, 0, BFD_RELOC_HI16_S, 2);
+      quick_reloc (abfd, 0, BFD_RELOC_LO16, 0); /* MIPS_R_PAIR */
+      quick_reloc (abfd, 4, BFD_RELOC_LO16, 2);
+      break;
     }
   save_relocs (tx);
 
@@ -1397,7 +1542,7 @@ make_one (exp, parent)
 void
 pe_dll_generate_implib (def, impfilename)
      def_file *def;
-     char *impfilename;
+     const char *impfilename;
 {
   int i;
   bfd *ar_head;
@@ -1405,14 +1550,7 @@ pe_dll_generate_implib (def, impfilename)
   bfd *outarch;
   bfd *head = 0;
 
-  dll_filename = def->name;
-  if (dll_filename == 0)
-    {
-      dll_filename = dll_name;
-      for (i=0; impfilename[i]; i++)
-       if (impfilename[i] == '/' || impfilename[i] == '\\')
-         dll_filename = impfilename+1;
-    }
+  dll_filename = (def->name) ? def->name : dll_name;
   dll_symname = xstrdup (dll_filename);
   for (i=0; dll_symname[i]; i++)
     if (!isalnum ((unsigned char) dll_symname[i]))
@@ -1611,14 +1749,14 @@ pe_as32 (ptr)
 
 boolean
 pe_implied_import_dll (filename)
-     char *filename;
+     const char *filename;
 {
   bfd *dll;
   unsigned long pe_header_offset, opthdr_ofs, num_entries, i;
   unsigned long export_rva, export_size, nsections, secptr, expptr;
   unsigned char *expdata, *erva;
   unsigned long name_rvas, ordinals, nexp, ordbase;
-  char *dll_name;
+  const char *dll_name;
 
   /* No, I can't use bfd here.  kernel32.dll puts its export table in
      the middle of the .rdata section. */
@@ -1717,7 +1855,7 @@ pe_dll_build_sections (abfd, info)
 void
 pe_exe_build_sections (abfd, info)
      bfd *abfd;
-     struct bfd_link_info *info;
+     struct bfd_link_info *info ATTRIBUTE_UNUSED;
 {
   pe_dll_id_target (bfd_get_target (abfd));
   build_filler_bfd (0);
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