diff options
Diffstat (limited to 'ld/emultempl/pe.em')
| -rw-r--r-- | ld/emultempl/pe.em | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/ld/emultempl/pe.em b/ld/emultempl/pe.em index 671f490..c3a289f 100644 --- a/ld/emultempl/pe.em +++ b/ld/emultempl/pe.em @@ -74,10 +74,12 @@ static void gld${EMULATION_NAME}_place_section PARAMS ((lang_statement_union_type *)); static char *gld_${EMULATION_NAME}_get_script PARAMS ((int *)); static int gld_${EMULATION_NAME}_parse_args PARAMS ((int, char **)); +static void gld_${EMULATION_NAME}_finish PARAMS ((void)); static struct internal_extra_pe_aouthdr pe; static int dll; static int support_old_code = 0; +static char * thumb_entry_symbol = NULL; extern def_file *pe_def_file; static lang_assignment_statement_type *image_base_statement = 0; @@ -126,6 +128,7 @@ gld_${EMULATION_NAME}_before_parse() #define OPTION_ENABLE_STDCALL_FIXUP (OPTION_STDCALL_ALIASES + 1) #define OPTION_DISABLE_STDCALL_FIXUP (OPTION_ENABLE_STDCALL_FIXUP + 1) #define OPTION_IMPLIB_FILENAME (OPTION_DISABLE_STDCALL_FIXUP + 1) +#define OPTION_THUMB_ENTRY (OPTION_IMPLIB_FILENAME + 1) static struct option longopts[] = { @@ -145,6 +148,7 @@ static struct option longopts[] = {"stack", required_argument, NULL, OPTION_STACK}, {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM}, {"support-old-code", no_argument, NULL, OPTION_SUPPORT_OLD_CODE}, + {"thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY}, #ifdef DLL_SUPPORT /* getopt allows abbreviations, so we do this to stop it from treating -o as an abbreviation for this option */ @@ -219,6 +223,7 @@ gld_${EMULATION_NAME}_list_options (file) fprintf (file, _(" --stack <size> Set size of the initial stack\n")); fprintf (file, _(" --subsystem <name>[:<version>] Set required OS subsystem [& version]\n")); fprintf (file, _(" --support-old-code Support interworking with old code\n")); + fprintf (file, _(" --thumb-entry=<symbol> Set the entry point to be Thumb <symbol>\n")); #ifdef DLL_SUPPORT fprintf (file, _(" --add-stdcall-alias Export symbols with and without @nn\n")); fprintf (file, _(" --disable-stdcall-fixup Don't link _sym to _sym@nn\n")); @@ -427,6 +432,9 @@ gld_${EMULATION_NAME}_parse_args(argc, argv) case OPTION_SUPPORT_OLD_CODE: support_old_code = 1; break; + case OPTION_THUMB_ENTRY: + thumb_entry_symbol = optarg; + break; #ifdef DLL_SUPPORT case OPTION_OUT_DEF: pe_out_def_filename = xstrdup (optarg); @@ -884,6 +892,47 @@ gld_${EMULATION_NAME}_recognized_file(entry) static void gld_${EMULATION_NAME}_finish () { +#if defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) + struct bfd_link_hash_entry * h; + + if (thumb_entry_symbol != NULL) + { + h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, false, false, true); + + if (h != (struct bfd_link_hash_entry *) NULL + && (h->type == bfd_link_hash_defined + || h->type == bfd_link_hash_defweak) + && h->u.def.section->output_section != NULL) + { + static char buffer[32]; + bfd_vma val; + + /* Special procesing is required for a Thumb entry symbol. The + bottom bit of its address must be set. */ + val = (h->u.def.value + + bfd_get_section_vma (output_bfd, + h->u.def.section->output_section) + + h->u.def.section->output_offset); + + val |= 1; + + /* Now convert this value into a string and store it in entry_symbol + where the lang_finish() function will pick it up. */ + buffer[0] = '0'; + buffer[1] = 'x'; + + sprintf_vma (buffer + 2, val); + + if (entry_symbol != NULL && entry_from_cmdline) + einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"), + thumb_entry_symbol, entry_symbol); + entry_symbol = buffer; + } + else + einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol); + } +#endif /* defined(TARGET_IS_armpe) || defined(TARGET_IS_arm_epoc_pe) */ + #ifdef DLL_SUPPORT if (link_info.shared) { |