From 18978b27d62c14b707df1248f44a6847d81fa45a Mon Sep 17 00:00:00 2001 From: Hans-Peter Nilsson Date: Mon, 25 Jul 2011 01:14:20 +0000 Subject: PR ld/12815 * elf64-mmix.c (struct _mmix_elf_section_data): New members has_warned_bpo and has_warned_pushj. (mmix_final_link_relocate): Remove PARAMS and PTR macros, converting to ISO C. Add new parameter error_message. All callers changed. (mmix_elf_perform_relocation): Ditto. : Handle the case where mmix_elf_check_common_relocs has not been called, missing preparations for relocs of the respective type. --- bfd/elf64-mmix.c | 129 +++++++++++++++++++++++++++++++++++++++++-------------- 1 file changed, 96 insertions(+), 33 deletions(-) (limited to 'bfd/elf64-mmix.c') diff --git a/bfd/elf64-mmix.c b/bfd/elf64-mmix.c index 8c00a78..ecc9ad0 100644 --- a/bfd/elf64-mmix.c +++ b/bfd/elf64-mmix.c @@ -75,6 +75,13 @@ struct _mmix_elf_section_data stubs_size_sum for relocation. */ bfd_size_type stub_offset; } pjs; + + /* Whether there has been a warning that this section could not be + linked due to a specific cause. FIXME: a way to access the + linker info or output section, then stuff the limiter guard + there. */ + bfd_boolean has_warned_bpo; + bfd_boolean has_warned_pushj; }; #define mmix_elf_section_data(sec) \ @@ -190,11 +197,11 @@ static bfd_boolean mmix_elf_relocate_section Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); static bfd_reloc_status_type mmix_final_link_relocate - PARAMS ((reloc_howto_type *, asection *, bfd_byte *, - bfd_vma, bfd_signed_vma, bfd_vma, const char *, asection *)); + (reloc_howto_type *, asection *, bfd_byte *, bfd_vma, bfd_signed_vma, + bfd_vma, const char *, asection *, char **); static bfd_reloc_status_type mmix_elf_perform_relocation - PARAMS ((asection *, reloc_howto_type *, PTR, bfd_vma, bfd_vma)); + (asection *, reloc_howto_type *, void *, bfd_vma, bfd_vma, char **); static bfd_boolean mmix_elf_section_from_bfd_section PARAMS ((bfd *, asection *, int *)); @@ -934,12 +941,9 @@ mmix_elf_new_section_hook (abfd, sec) R_MMIX_ADDR19 and R_MMIX_ADDR27 are just filled in. */ static bfd_reloc_status_type -mmix_elf_perform_relocation (isec, howto, datap, addr, value) - asection *isec; - reloc_howto_type *howto; - PTR datap; - bfd_vma addr; - bfd_vma value; +mmix_elf_perform_relocation (asection *isec, reloc_howto_type *howto, + void *datap, bfd_vma addr, bfd_vma value, + char **error_message) { bfd *abfd = isec->owner; bfd_reloc_status_type flag = bfd_reloc_ok; @@ -1013,6 +1017,36 @@ mmix_elf_perform_relocation (isec, howto, datap, addr, value) + mmix_elf_section_data (isec)->pjs.stub_offset); bfd_vma stubaddr; + if (mmix_elf_section_data (isec)->pjs.n_pushj_relocs == 0) + { + /* This shouldn't happen when linking to ELF or mmo, so + this is an attempt to link to "binary", right? We + can't access the output bfd, so we can't verify that + assumption. We only know that the critical + mmix_elf_check_common_relocs has not been called, + which happens when the output format is different + from the input format (and is not mmo). */ + if (! mmix_elf_section_data (isec)->has_warned_pushj) + { + /* For the first such error per input section, produce + a verbose message. */ + *error_message + = _("invalid input relocation when producing" + " non-ELF, non-mmo format output." + "\n Please use the objcopy program to convert from" + " ELF or mmo," + "\n or assemble using" + " \"-no-expand\" (for gcc, \"-Wa,-no-expand\""); + mmix_elf_section_data (isec)->has_warned_pushj = TRUE; + return bfd_reloc_dangerous; + } + + /* For subsequent errors, return this one, which is + rate-limited but looks a little bit different, + hopefully without affecting user-friendliness. */ + return bfd_reloc_overflow; + } + /* The address doesn't fit, so redirect the PUSHJ to the location of the stub. */ r = mmix_elf_perform_relocation (isec, @@ -1025,7 +1059,8 @@ mmix_elf_perform_relocation (isec, howto, datap, addr, value) + size + (mmix_elf_section_data (isec) ->pjs.stub_offset) - - addr); + - addr, + error_message); if (r != bfd_reloc_ok) return r; @@ -1049,7 +1084,8 @@ mmix_elf_perform_relocation (isec, howto, datap, addr, value) [R_MMIX_ADDR27], stubcontents, stubaddr, - value + addr - stubaddr); + value + addr - stubaddr, + error_message); mmix_elf_section_data (isec)->pjs.stub_offset += 4; if (size + mmix_elf_section_data (isec)->pjs.stub_offset @@ -1161,12 +1197,43 @@ mmix_elf_perform_relocation (isec, howto, datap, addr, value) { struct bpo_reloc_section_info *bpodata = mmix_elf_section_data (isec)->bpo.reloc; - asection *bpo_greg_section - = bpodata->bpo_greg_section; - struct bpo_greg_section_info *gregdata - = mmix_elf_section_data (bpo_greg_section)->bpo.greg; - size_t bpo_index - = gregdata->bpo_reloc_indexes[bpodata->bpo_index++]; + asection *bpo_greg_section; + struct bpo_greg_section_info *gregdata; + size_t bpo_index; + + if (bpodata == NULL) + { + /* This shouldn't happen when linking to ELF or mmo, so + this is an attempt to link to "binary", right? We + can't access the output bfd, so we can't verify that + assumption. We only know that the critical + mmix_elf_check_common_relocs has not been called, which + happens when the output format is different from the + input format (and is not mmo). */ + if (! mmix_elf_section_data (isec)->has_warned_bpo) + { + /* For the first such error per input section, produce + a verbose message. */ + *error_message + = _("invalid input relocation when producing" + " non-ELF, non-mmo format output." + "\n Please use the objcopy program to convert from" + " ELF or mmo," + "\n or compile using the gcc-option" + " \"-mno-base-addresses\"."); + mmix_elf_section_data (isec)->has_warned_bpo = TRUE; + return bfd_reloc_dangerous; + } + + /* For subsequent errors, return this one, which is + rate-limited but looks a little bit different, + hopefully without affecting user-friendliness. */ + return bfd_reloc_overflow; + } + + bpo_greg_section = bpodata->bpo_greg_section; + gregdata = mmix_elf_section_data (bpo_greg_section)->bpo.greg; + bpo_index = gregdata->bpo_reloc_indexes[bpodata->bpo_index++]; /* A consistency check: The value we now have in "relocation" must be the same as the value we stored for that relocation. It @@ -1260,7 +1327,7 @@ mmix_elf_reloc (abfd, reloc_entry, symbol, data, input_section, PTR data; asection *input_section; bfd *output_bfd; - char **error_message ATTRIBUTE_UNUSED; + char **error_message; { bfd_vma relocation; bfd_reloc_status_type r; @@ -1322,7 +1389,8 @@ mmix_elf_reloc (abfd, reloc_entry, symbol, data, input_section, data, reloc_entry->address, reloc_entry->addend, relocation, bfd_asymbol_name (symbol), - reloc_target_output_section); + reloc_target_output_section, + error_message); } /* Relocate an MMIX ELF section. Modified from elf32-fr30.c; look to it @@ -1454,7 +1522,7 @@ mmix_elf_relocate_section (output_bfd, info, input_bfd, input_section, + size + mmix_elf_section_data (input_section) ->pjs.stub_offset, - NULL, NULL) != bfd_reloc_ok) + NULL, NULL, NULL) != bfd_reloc_ok) return FALSE; /* Put a JMP insn at the stub; it goes with the @@ -1494,7 +1562,7 @@ mmix_elf_relocate_section (output_bfd, info, input_bfd, input_section, r = mmix_final_link_relocate (howto, input_section, contents, rel->r_offset, - rel->r_addend, relocation, name, sec); + rel->r_addend, relocation, name, sec, NULL); if (r != bfd_reloc_ok) { @@ -1551,16 +1619,11 @@ mmix_elf_relocate_section (output_bfd, info, input_bfd, input_section, routines. A few relocs we have to do ourselves. */ static bfd_reloc_status_type -mmix_final_link_relocate (howto, input_section, contents, - r_offset, r_addend, relocation, symname, symsec) - reloc_howto_type *howto; - asection *input_section; - bfd_byte *contents; - bfd_vma r_offset; - bfd_signed_vma r_addend; - bfd_vma relocation; - const char *symname; - asection *symsec; +mmix_final_link_relocate (reloc_howto_type *howto, asection *input_section, + bfd_byte *contents, bfd_vma r_offset, + bfd_signed_vma r_addend, bfd_vma relocation, + const char *symname, asection *symsec, + char **error_message) { bfd_reloc_status_type r = bfd_reloc_ok; bfd_vma addr @@ -1587,7 +1650,7 @@ mmix_final_link_relocate (howto, input_section, contents, + r_offset); r = mmix_elf_perform_relocation (input_section, howto, contents, - addr, srel); + addr, srel, error_message); break; case R_MMIX_BASE_PLUS_OFFSET: @@ -1669,7 +1732,7 @@ mmix_final_link_relocate (howto, input_section, contents, do_mmix_reloc: contents += r_offset; r = mmix_elf_perform_relocation (input_section, howto, contents, - addr, srel); + addr, srel, error_message); break; case R_MMIX_LOCAL: -- cgit v1.1