X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bfd%2Felf32-hppa.c;h=2e653083ce05a77b3e33c056e2f9a51b327c2b22;hb=153d79c451fd852e97cdfecf2205781e3a13dd55;hp=7258a298edfd148278a8b174bf5f700691d5aaa7;hpb=07d6d2b8345ef3dc82eab49635acac9ee67dbb18;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf32-hppa.c b/bfd/elf32-hppa.c index 7258a298ed..2e653083ce 100644 --- a/bfd/elf32-hppa.c +++ b/bfd/elf32-hppa.c @@ -1,5 +1,5 @@ /* BFD back-end for HP PA-RISC ELF files. - Copyright (C) 1990-2017 Free Software Foundation, Inc. + Copyright (C) 1990-2020 Free Software Foundation, Inc. Original code by Center for Software Science @@ -71,34 +71,38 @@ Import stub to call shared library routine from normal object file (single sub-space version) - : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point - : ldw RR'lt_ptr+ltoff(%r1),%r21 + : addil LR'lt_ptr+ltoff,%dp ; get PLT address + : ldo RR'lt_ptr+ltoff(%r1),%r22 ; + : ldw 0(%r22),%r21 ; get procedure entry point : bv %r0(%r21) - : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. + : ldw 4(%r22),%r19 ; get new dlt value. Import stub to call shared library routine from shared library (single sub-space version) - : addil LR'ltoff,%r19 ; get procedure entry point - : ldw RR'ltoff(%r1),%r21 + : addil LR'ltoff,%r19 ; get PLT address + : ldo RR'ltoff(%r1),%r22 + : ldw 0(%r22),%r21 ; get procedure entry point : bv %r0(%r21) - : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value. + : ldw 4(%r22),%r19 ; get new dlt value. Import stub to call shared library routine from normal object file (multiple sub-space support) - : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point - : ldw RR'lt_ptr+ltoff(%r1),%r21 - : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. - : ldsid (%r21),%r1 + : addil LR'lt_ptr+ltoff,%dp ; get PLT address + : ldo RR'lt_ptr+ltoff(%r1),%r22 ; + : ldw 0(%r22),%r21 ; get procedure entry point + : ldsid (%r21),%r1 ; get target sid + : ldw 4(%r22),%r19 ; get new dlt value. : mtsp %r1,%sr0 : be 0(%sr0,%r21) ; branch to target : stw %rp,-24(%sp) ; save rp Import stub to call shared library routine from shared library (multiple sub-space support) - : addil LR'ltoff,%r19 ; get procedure entry point - : ldw RR'ltoff(%r1),%r21 - : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value. - : ldsid (%r21),%r1 + : addil LR'ltoff,%r19 ; get PLT address + : ldo RR'ltoff(%r1),%r22 + : ldw 0(%r22),%r21 ; get procedure entry point + : ldsid (%r21),%r1 ; get target sid + : ldw 4(%r22),%r19 ; get new dlt value. : mtsp %r1,%sr0 : be 0(%sr0,%r21) ; branch to target : stw %rp,-24(%sp) ; save rp @@ -136,12 +140,17 @@ #define PLT_ENTRY_SIZE 8 #define GOT_ENTRY_SIZE 4 +#define LONG_BRANCH_STUB_SIZE 8 +#define LONG_BRANCH_SHARED_STUB_SIZE 12 +#define IMPORT_STUB_SIZE 20 +#define IMPORT_SHARED_STUB_SIZE 32 +#define EXPORT_STUB_SIZE 24 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" static const bfd_byte plt_stub[] = { - 0x0e, 0x80, 0x10, 0x96, /* 1: ldw 0(%r20),%r22 */ - 0xea, 0xc0, 0xc0, 0x00, /* bv %r0(%r22) */ + 0x0e, 0x80, 0x10, 0x95, /* 1: ldw 0(%r20),%r21 */ + 0xea, 0xa0, 0xc0, 0x00, /* bv %r0(%r21) */ 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */ #define PLT_STUB_ENTRY (3*4) 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */ @@ -503,6 +512,8 @@ hppa_get_stub_entry (const asection *input_section, more than one stub used to reach say, printf, and we need to distinguish between them. */ id_sec = htab->stub_group[input_section->id].link_sec; + if (id_sec == NULL) + return NULL; if (hh != NULL && hh->hsh_cache != NULL && hh->hsh_cache->hh == hh @@ -574,7 +585,7 @@ hppa_add_stub (const char *stub_name, if (hsh == NULL) { /* xgettext:c-format */ - _bfd_error_handler (_("%B: cannot create stub entry %s"), + _bfd_error_handler (_("%pB: cannot create stub entry %s"), section->owner, stub_name); return NULL; } @@ -612,6 +623,9 @@ hppa_type_of_stub (asection *input_sec, return hppa_stub_import; } + if (destination == (bfd_vma) -1) + return hppa_stub_none; + /* Determine where the call point is. */ location = (input_sec->output_offset + input_sec->output_section->vma @@ -657,6 +671,10 @@ hppa_type_of_stub (asection *input_sec, #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */ #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */ +#define LDO_R1_R22 0x34360000 /* ldo RR'XXX(%r1),%r22 */ +#define LDW_R22_R21 0x0ec01095 /* ldw 0(%r22),%r21 */ +#define LDW_R22_R19 0x0ec81093 /* ldw 4(%r22),%r19 */ + #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */ #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */ #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */ @@ -729,7 +747,7 @@ hppa_build_one_stub (struct bfd_hash_entry *bh, void *in_arg) insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17); bfd_put_32 (stub_bfd, insn, loc + 4); - size = 8; + size = LONG_BRANCH_STUB_SIZE; break; case hppa_stub_long_branch_shared: @@ -751,7 +769,7 @@ hppa_build_one_stub (struct bfd_hash_entry *bh, void *in_arg) val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2; insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17); bfd_put_32 (stub_bfd, insn, loc + 8); - size = 12; + size = LONG_BRANCH_SHARED_STUB_SIZE; break; case hppa_stub_import: @@ -771,40 +789,35 @@ hppa_build_one_stub (struct bfd_hash_entry *bh, void *in_arg) if (hsh->stub_type == hppa_stub_import_shared) insn = ADDIL_R19; #endif + + /* Load function descriptor address into register %r22. It is + sometimes needed for lazy binding. */ val = hppa_field_adjust (sym_value, 0, e_lrsel), insn = hppa_rebuild_insn ((int) insn, val, 21); bfd_put_32 (stub_bfd, insn, loc); - /* It is critical to use lrsel/rrsel here because we are using - two different offsets (+0 and +4) from sym_value. If we use - lsel/rsel then with unfortunate sym_values we will round - sym_value+4 up to the next 2k block leading to a mis-match - between the lsel and rsel value. */ val = hppa_field_adjust (sym_value, 0, e_rrsel); - insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14); + insn = hppa_rebuild_insn ((int) LDO_R1_R22, val, 14); bfd_put_32 (stub_bfd, insn, loc + 4); + bfd_put_32 (stub_bfd, (bfd_vma) LDW_R22_R21, loc + 8); + if (htab->multi_subspace) { - val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel); - insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14); - bfd_put_32 (stub_bfd, insn, loc + 8); - bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12); - bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16); - bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20); - bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24); + bfd_put_32 (stub_bfd, (bfd_vma) LDW_R22_R19, loc + 16); + bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 20); + bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 24); + bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 28); - size = 28; + size = IMPORT_SHARED_STUB_SIZE; } else { - bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8); - val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel); - insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14); - bfd_put_32 (stub_bfd, insn, loc + 12); + bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 12); + bfd_put_32 (stub_bfd, (bfd_vma) LDW_R22_R19, loc + 16); - size = 16; + size = IMPORT_STUB_SIZE; } break; @@ -826,10 +839,11 @@ hppa_build_one_stub (struct bfd_hash_entry *bh, void *in_arg) { _bfd_error_handler /* xgettext:c-format */ - (_("%B(%A+%#Lx): cannot reach %s, recompile with -ffunction-sections"), + (_("%pB(%pA+%#" PRIx64 "): " + "cannot reach %s, recompile with -ffunction-sections"), hsh->target_section->owner, stub_sec, - hsh->stub_offset, + (uint64_t) hsh->stub_offset, hsh->bh_root.string); bfd_set_error (bfd_error_bad_value); return FALSE; @@ -852,7 +866,7 @@ hppa_build_one_stub (struct bfd_hash_entry *bh, void *in_arg) hsh->hh->eh.root.u.def.section = stub_sec; hsh->hh->eh.root.u.def.value = stub_sec->size; - size = 24; + size = EXPORT_STUB_SIZE; break; default: @@ -900,17 +914,17 @@ hppa_size_one_stub (struct bfd_hash_entry *bh, void *in_arg) htab = in_arg; if (hsh->stub_type == hppa_stub_long_branch) - size = 8; + size = LONG_BRANCH_STUB_SIZE; else if (hsh->stub_type == hppa_stub_long_branch_shared) - size = 12; + size = LONG_BRANCH_SHARED_STUB_SIZE; else if (hsh->stub_type == hppa_stub_export) - size = 24; + size = EXPORT_STUB_SIZE; else /* hppa_stub_import or hppa_stub_import_shared. */ { if (htab->multi_subspace) - size = 28; + size = IMPORT_SHARED_STUB_SIZE; else - size = 16; + size = IMPORT_STUB_SIZE; } hsh->stub_sec->size += size; @@ -1239,7 +1253,7 @@ elf32_hppa_check_relocs (bfd *abfd, { _bfd_error_handler /* xgettext:c-format */ - (_("%B: relocation %s can not be used when making a shared object; recompile with -fPIC"), + (_("%pB: relocation %s can not be used when making a shared object; recompile with -fPIC"), abfd, elf_hppa_howto_table[r_type].name); bfd_set_error (bfd_error_bad_value); @@ -1267,9 +1281,7 @@ elf32_hppa_check_relocs (bfd *abfd, /* This relocation describes which C++ vtable entries are actually used. Record for later use during GC. */ case R_PARISC_GNU_VTENTRY: - BFD_ASSERT (hh != NULL); - if (hh != NULL - && !bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rela->r_addend)) + if (!bfd_elf_gc_record_vtentry (abfd, sec, &hh->eh, rela->r_addend)) return FALSE; continue; @@ -1890,18 +1902,19 @@ got_entries_needed (int tls_type) } /* Calculate size of relocs needed for symbol given its TLS_TYPE and - NEEDed GOT entries. KNOWN says a TPREL offset can be calculated - at link time. */ + NEEDed GOT entries. TPREL_KNOWN says a TPREL offset can be + calculated at link time. DTPREL_KNOWN says the same for a DTPREL + offset. */ static inline unsigned int -got_relocs_needed (int tls_type, unsigned int need, bfd_boolean known) +got_relocs_needed (int tls_type, unsigned int need, + bfd_boolean dtprel_known, bfd_boolean tprel_known) { /* All the entries we allocated need relocs. - Except IE in executable with a local symbol. We could also omit - the DTPOFF reloc on the second word of a GD entry under the same - condition as that for IE, but ld.so might want to differentiate - LD and GD entries at some stage. */ - if ((tls_type & GOT_TLS_IE) != 0 && known) + Except for GD and IE with local symbols. */ + if ((tls_type & GOT_TLS_GD) != 0 && dtprel_known) + need -= GOT_ENTRY_SIZE; + if ((tls_type & GOT_TLS_IE) != 0 && tprel_known) need -= GOT_ENTRY_SIZE; return need * sizeof (Elf32_External_Rela) / GOT_ENTRY_SIZE; } @@ -1955,15 +1968,16 @@ allocate_dynrelocs (struct elf_link_hash_entry *eh, void *inf) need = got_entries_needed (hh->tls_type); sec->size += need; if (htab->etab.dynamic_sections_created - && (bfd_link_pic (info) + && (bfd_link_dll (info) + || (bfd_link_pic (info) && (hh->tls_type & GOT_NORMAL) != 0) || (eh->dynindx != -1 && !SYMBOL_REFERENCES_LOCAL (info, eh))) && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, eh)) { - bfd_boolean tprel_known = (bfd_link_executable (info) - && SYMBOL_REFERENCES_LOCAL (info, eh)); + bfd_boolean local = SYMBOL_REFERENCES_LOCAL (info, eh); htab->etab.srelgot->size - += got_relocs_needed (hh->tls_type, need, tprel_known); + += got_relocs_needed (hh->tls_type, need, local, + local && bfd_link_executable (info)); } } else @@ -2079,7 +2093,7 @@ maybe_set_textrel (struct elf_link_hash_entry *eh, void *inf) info->flags |= DF_TEXTREL; info->callbacks->minfo - (_("%B: dynamic relocation against `%T' in read-only section `%A'\n"), + (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), sec->owner, eh->root.root.string, sec); /* Not an error, just cut short the traversal. */ @@ -2188,12 +2202,12 @@ elf32_hppa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, *local_got = sec->size; need = got_entries_needed (*local_tls_type); sec->size += need; - if (bfd_link_pic (info)) - { - bfd_boolean tprel_known = bfd_link_executable (info); - htab->etab.srelgot->size - += got_relocs_needed (*local_tls_type, need, tprel_known); - } + if (bfd_link_dll (info) + || (bfd_link_pic (info) + && (*local_tls_type & GOT_NORMAL) != 0)) + htab->etab.srelgot->size + += got_relocs_needed (*local_tls_type, need, TRUE, + bfd_link_executable (info)); } else *local_got = (bfd_vma) -1; @@ -2264,12 +2278,13 @@ elf32_hppa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, /* Make space for the plt stub at the end of the .plt section. We want this stub right at the end, up against the .got section. */ - int gotalign = bfd_section_alignment (dynobj, htab->etab.sgot); - int pltalign = bfd_section_alignment (dynobj, sec); + int gotalign = bfd_section_alignment (htab->etab.sgot); + int pltalign = bfd_section_alignment (sec); + int align = gotalign > 3 ? gotalign : 3; bfd_size_type mask; - if (gotalign > pltalign) - (void) bfd_set_section_alignment (dynobj, sec, gotalign); + if (align > pltalign) + bfd_set_section_alignment (sec, align); mask = ((bfd_size_type) 1 << gotalign) - 1; sec->size = (sec->size + sizeof (plt_stub) + mask) & ~mask; } @@ -2278,7 +2293,7 @@ elf32_hppa_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, || sec == htab->etab.sdynbss || sec == htab->etab.sdynrelro) ; - else if (CONST_STRNEQ (bfd_get_section_name (dynobj, sec), ".rela")) + else if (CONST_STRNEQ (bfd_section_name (sec), ".rela")) { if (sec->size != 0) { @@ -2677,7 +2692,7 @@ get_local_syms (bfd *output_bfd, bfd *input_bfd, struct bfd_link_info *info) else { /* xgettext:c-format */ - _bfd_error_handler (_("%B: duplicate export stub %s"), + _bfd_error_handler (_("%pB: duplicate export stub %s"), input_bfd, stub_name); } } @@ -2789,6 +2804,9 @@ elf32_hppa_size_stubs /* If there aren't any relocs, then there's nothing more to do. */ if ((section->flags & SEC_RELOC) == 0 + || (section->flags & SEC_ALLOC) == 0 + || (section->flags & SEC_LOAD) == 0 + || (section->flags & SEC_CODE) == 0 || section->reloc_count == 0) continue; @@ -2842,7 +2860,7 @@ elf32_hppa_size_stubs section. */ sym_sec = NULL; sym_value = 0; - destination = 0; + destination = -1; hh = NULL; if (r_indx < symtab_hdr->sh_info) { @@ -3203,7 +3221,7 @@ final_link_relocate (asection *input_section, struct elf32_hppa_link_hash_entry *hh, struct bfd_link_info *info) { - int insn; + unsigned int insn; unsigned int r_type = ELF32_R_TYPE (rela->r_info); unsigned int orig_r_type = r_type; reloc_howto_type *howto = elf_hppa_howto_table + r_type; @@ -3272,7 +3290,7 @@ final_link_relocate (asection *input_section, || hh->eh.root.type == bfd_link_hash_defweak))) { hsh = hppa_get_stub_entry (input_section, sym_sec, - hh, rela, htab); + hh, rela, htab); if (hsh != NULL) { value = (hsh->stub_offset @@ -3322,7 +3340,7 @@ final_link_relocate (asection *input_section, /* GCC sometimes uses a register other than r19 for the operation, so we must convert any addil instruction that uses this relocation. */ - if ((insn & 0xfc000000) == ((int) OP_ADDIL << 26)) + if ((insn & 0xfc000000) == OP_ADDIL << 26) insn = ADDIL_DP; else /* We must have a ldil instruction. It's too hard to find @@ -3330,10 +3348,11 @@ final_link_relocate (asection *input_section, error. */ _bfd_error_handler /* xgettext:c-format */ - (_("%B(%A+%#Lx): %s fixup for insn %#x is not supported in a non-shared link"), + (_("%pB(%pA+%#" PRIx64 "): %s fixup for insn %#x " + "is not supported in a non-shared link"), input_bfd, input_section, - offset, + (uint64_t) offset, howto->name, insn); } @@ -3355,8 +3374,8 @@ final_link_relocate (asection *input_section, instance: "extern int foo" with foo defined as "const int foo". */ if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0) { - if ((insn & ((0x3f << 26) | (0x1f << 21))) - == (((int) OP_ADDIL << 26) | (27 << 21))) + if ((insn & ((0x3fu << 26) | (0x1f << 21))) + == ((OP_ADDIL << 26) | (27 << 21))) { insn &= ~ (0x1f << 21); } @@ -3471,7 +3490,7 @@ final_link_relocate (asection *input_section, if (value + addend + max_branch_offset >= 2*max_branch_offset) { hsh = hppa_get_stub_entry (input_section, sym_sec, - hh, rela, htab); + hh, rela, htab); if (hsh == NULL) return bfd_reloc_undefined; @@ -3496,10 +3515,11 @@ final_link_relocate (asection *input_section, { _bfd_error_handler /* xgettext:c-format */ - (_("%B(%A+%#Lx): cannot reach %s, recompile with -ffunction-sections"), + (_("%pB(%pA+%#" PRIx64 "): cannot reach %s, " + "recompile with -ffunction-sections"), input_bfd, input_section, - offset, + (uint64_t) offset, hsh->bh_root.string); bfd_set_error (bfd_error_bad_value); return bfd_reloc_notsupported; @@ -4035,7 +4055,7 @@ elf32_hppa_relocate_section (bfd *output_bfd, GD GOT are necessary, we emit the GD first. */ if (indx != 0 - || (bfd_link_pic (info) + || (bfd_link_dll (info) && (hh == NULL || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &hh->eh)))) { @@ -4059,29 +4079,32 @@ elf32_hppa_relocate_section (bfd *output_bfd, bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); htab->etab.srelgot->reloc_count++; loc += sizeof (Elf32_External_Rela); + bfd_put_32 (output_bfd, 0, + htab->etab.sgot->contents + cur_off); + } + else + /* If we are not emitting relocations for a + general dynamic reference, then we must be in a + static link or an executable link with the + symbol binding locally. Mark it as belonging + to module 1, the executable. */ + bfd_put_32 (output_bfd, 1, + htab->etab.sgot->contents + cur_off); + + if (indx != 0) + { outrel.r_info = ELF32_R_INFO (indx, R_PARISC_TLS_DTPOFF32); outrel.r_offset += 4; bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); htab->etab.srelgot->reloc_count++; loc += sizeof (Elf32_External_Rela); - bfd_put_32 (output_bfd, 0, - htab->etab.sgot->contents + cur_off); bfd_put_32 (output_bfd, 0, htab->etab.sgot->contents + cur_off + 4); } else - { - /* If we are not emitting relocations for a - general dynamic reference, then we must be in a - static link or an executable link with the - symbol binding locally. Mark it as belonging - to module 1, the executable. */ - bfd_put_32 (output_bfd, 1, - htab->etab.sgot->contents + cur_off); - bfd_put_32 (output_bfd, relocation - dtpoff_base (info), - htab->etab.sgot->contents + cur_off + 4); - } + bfd_put_32 (output_bfd, relocation - dtpoff_base (info), + htab->etab.sgot->contents + cur_off + 4); cur_off += 8; } @@ -4137,9 +4160,9 @@ elf32_hppa_relocate_section (bfd *output_bfd, if (sym_name == NULL) return FALSE; if (*sym_name == '\0') - sym_name = bfd_section_name (input_bfd, sym_sec); + sym_name = bfd_section_name (sym_sec); _bfd_error_handler - (_("%B:%s has both normal and TLS relocs"), + (_("%pB:%s has both normal and TLS relocs"), input_bfd, sym_name); } bfd_set_error (bfd_error_bad_value); @@ -4187,7 +4210,7 @@ elf32_hppa_relocate_section (bfd *output_bfd, if (sym_name == NULL) return FALSE; if (*sym_name == '\0') - sym_name = bfd_section_name (input_bfd, sym_sec); + sym_name = bfd_section_name (sym_sec); } howto = elf_hppa_howto_table + r_type; @@ -4198,10 +4221,10 @@ elf32_hppa_relocate_section (bfd *output_bfd, { _bfd_error_handler /* xgettext:c-format */ - (_("%B(%A+%#Lx): cannot handle %s for %s"), + (_("%pB(%pA+%#" PRIx64 "): cannot handle %s for %s"), input_bfd, input_section, - rela->r_offset, + (uint64_t) rela->r_offset, howto->name, sym_name); bfd_set_error (bfd_error_bad_value);