From 3bea1fcb8b8a9b3c2133c162fe4cd6c91f40cfdf Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Fri, 18 Jan 2013 22:50:30 +0000 Subject: [PATCH] Resolve size relocation against non-zero TLS symbol bfd/ * elf32-i386.c (elf_i386_allocate_dynrelocs): Clear pc_count for non-zero TLS symbol. (elf_i386_relocate_section): Resolve size relocation against non-zero TLS symbol. * elf64-x86-64.c (elf_x86_64_allocate_dynrelocs): Clear pc_count for non-zero TLS symbol. (elf_x86_64_relocate_section): Resolve size relocation against non-zero TLS symbol. ld/testsuite/ * ld-size/size-10.rd: Updated. * ld-size/size-8.rd: Likewise. * ld-size/size32-2-i386.d: Likewise. * ld-size/size32-2-x32.d: Likewise. * ld-size/size32-2-x86-64.d: Likewise. * ld-size/size64-2-x32.d: Likewise. * ld-size/size64-2-x86-64.d: Likewise. --- bfd/ChangeLog | 11 +++++++++++ bfd/elf32-i386.c | 24 ++++++++++++++++++++++++ bfd/elf64-x86-64.c | 24 ++++++++++++++++++++++++ ld/testsuite/ChangeLog | 10 ++++++++++ ld/testsuite/ld-size/size-10.rd | 5 +++-- ld/testsuite/ld-size/size-8.rd | 5 +++-- ld/testsuite/ld-size/size32-2-i386.d | 12 +++++------- ld/testsuite/ld-size/size32-2-x32.d | 12 +++++------- ld/testsuite/ld-size/size32-2-x86-64.d | 12 +++++------- ld/testsuite/ld-size/size64-2-x32.d | 14 ++++++-------- ld/testsuite/ld-size/size64-2-x86-64.d | 14 ++++++-------- 11 files changed, 102 insertions(+), 41 deletions(-) diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 85b411aacd..e60c4722e6 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,14 @@ +2013-01-18 H.J. Lu + + * elf32-i386.c (elf_i386_allocate_dynrelocs): Clear pc_count for + non-zero TLS symbol. + (elf_i386_relocate_section): Resolve size relocation against + non-zero TLS symbol. + * elf64-x86-64.c (elf_x86_64_allocate_dynrelocs): Clear pc_count + for non-zero TLS symbol. + (elf_x86_64_relocate_section): Resolve size relocation against + non-zero TLS symbol. + 2013-01-18 Mike Frysinger * elflink.c (bfd_elf_size_dynamic_sections): Only add DT_RPATH diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c index f8ad1d1c1f..01e50a41c6 100644 --- a/bfd/elf32-i386.c +++ b/bfd/elf32-i386.c @@ -2358,6 +2358,24 @@ elf_i386_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) if (eh->dyn_relocs == NULL) return TRUE; + /* Since pc_count for TLS symbol can only have size relocations and + we always resolve size relocation against non-zero TLS symbol, we + clear pc_count for non-zero TLS symbol. */ + if (h->type == STT_TLS && h->size != 0) + { + struct elf_dyn_relocs **pp; + + for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) + { + p->count -= p->pc_count; + p->pc_count = 0; + if (p->count == 0) + *pp = p->next; + else + pp = &p->next; + } + } + /* In the shared -Bsymbolic case, discard space allocated for dynamic pc-relative relocs against symbols which turn out to be defined in regular objects. For the normal shared case, discard @@ -3691,6 +3709,12 @@ elf_i386_relocate_section (bfd *output_bfd, case R_386_SIZE32: /* Set to symbol size. */ relocation = st_size; + if (h && h->type == STT_TLS && st_size != 0) + { + /* Resolve size relocation against non-zero TLS symbol. */ + unresolved_reloc = FALSE; + break; + } /* Fall through. */ case R_386_32: diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c index 79b6dc6060..71f33e2b80 100644 --- a/bfd/elf64-x86-64.c +++ b/bfd/elf64-x86-64.c @@ -2400,6 +2400,24 @@ elf_x86_64_allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) if (eh->dyn_relocs == NULL) return TRUE; + /* Since pc_count for TLS symbol can only have size relocations and + we always resolve size relocation against non-zero TLS symbol, we + clear pc_count for non-zero TLS symbol. */ + if (h->type == STT_TLS && h->size != 0) + { + struct elf_dyn_relocs **pp; + + for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) + { + p->count -= p->pc_count; + p->pc_count = 0; + if (p->count == 0) + *pp = p->next; + else + pp = &p->next; + } + } + /* In the shared -Bsymbolic case, discard space allocated for dynamic pc-relative relocs against symbols which turn out to be defined in regular objects. For the normal shared case, discard @@ -3687,6 +3705,12 @@ elf_x86_64_relocate_section (bfd *output_bfd, case R_X86_64_SIZE64: /* Set to symbol size. */ relocation = st_size; + if (h && h->type == STT_TLS && st_size != 0) + { + /* Resolve size relocation against non-zero TLS symbol. */ + unresolved_reloc = FALSE; + break; + } goto direct; case R_X86_64_PC8: diff --git a/ld/testsuite/ChangeLog b/ld/testsuite/ChangeLog index 76d4585ab8..70aa059357 100644 --- a/ld/testsuite/ChangeLog +++ b/ld/testsuite/ChangeLog @@ -1,3 +1,13 @@ +2013-01-18 H.J. Lu + + * ld-size/size-10.rd: Updated. + * ld-size/size-8.rd: Likewise. + * ld-size/size32-2-i386.d: Likewise. + * ld-size/size32-2-x32.d: Likewise. + * ld-size/size32-2-x86-64.d: Likewise. + * ld-size/size64-2-x32.d: Likewise. + * ld-size/size64-2-x86-64.d: Likewise. + 2013-01-17 H.J. Lu * ld-size/size-7.out: New file. diff --git a/ld/testsuite/ld-size/size-10.rd b/ld/testsuite/ld-size/size-10.rd index a5f8ee8ded..1cad47ef72 100644 --- a/ld/testsuite/ld-size/size-10.rd +++ b/ld/testsuite/ld-size/size-10.rd @@ -1,3 +1,4 @@ +#failif +#... +.* +R_.*_NONE +.* #... -[0-9a-f]+ +[0-9a-f]+ +R_.*_SIZE(32|64) +.* -#pass diff --git a/ld/testsuite/ld-size/size-8.rd b/ld/testsuite/ld-size/size-8.rd index a5f8ee8ded..1cad47ef72 100644 --- a/ld/testsuite/ld-size/size-8.rd +++ b/ld/testsuite/ld-size/size-8.rd @@ -1,3 +1,4 @@ +#failif +#... +.* +R_.*_NONE +.* #... -[0-9a-f]+ +[0-9a-f]+ +R_.*_SIZE(32|64) +.* -#pass diff --git a/ld/testsuite/ld-size/size32-2-i386.d b/ld/testsuite/ld-size/size32-2-i386.d index 2db0e1d33e..328006eae8 100644 --- a/ld/testsuite/ld-size/size32-2-i386.d +++ b/ld/testsuite/ld-size/size32-2-i386.d @@ -8,13 +8,11 @@ DYNAMIC RELOCATION RECORDS OFFSET TYPE VALUE -0+123c R_386_SIZE32 xxx -0+1240 R_386_SIZE32 yyy -0+1244 R_386_SIZE32 zzz -0+1248 R_386_SIZE32 zzz -0+124c R_386_SIZE32 zzz +0+1234 R_386_SIZE32 zzz +0+1238 R_386_SIZE32 zzz +0+123c R_386_SIZE32 zzz Contents of section .data: - 123c 00000000 00000000 00000000 e2ffffff ................ - 124c 1e000000 .... + 122c 28000000 28000000 00000000 e2ffffff ................ + 123c 1e000000 .... diff --git a/ld/testsuite/ld-size/size32-2-x32.d b/ld/testsuite/ld-size/size32-2-x32.d index 9c1eae2695..5049c4ad91 100644 --- a/ld/testsuite/ld-size/size32-2-x32.d +++ b/ld/testsuite/ld-size/size32-2-x32.d @@ -8,13 +8,11 @@ DYNAMIC RELOCATION RECORDS OFFSET TYPE VALUE -0+200278 R_X86_64_SIZE32 xxx -0+20027c R_X86_64_SIZE32 yyy -0+200280 R_X86_64_SIZE32 zzz -0+200284 R_X86_64_SIZE32 zzz-0x0000001e -0+200288 R_X86_64_SIZE32 zzz\+0x0000001e +0+200268 R_X86_64_SIZE32 zzz +0+20026c R_X86_64_SIZE32 zzz-0x0000001e +0+200270 R_X86_64_SIZE32 zzz\+0x0000001e Contents of section .data: - 200278 00000000 00000000 00000000 00000000 ................ - 200288 00000000 .... + 200260 28000000 28000000 00000000 00000000 ................ + 200270 00000000 .... diff --git a/ld/testsuite/ld-size/size32-2-x86-64.d b/ld/testsuite/ld-size/size32-2-x86-64.d index 1851e0f021..482b1422fa 100644 --- a/ld/testsuite/ld-size/size32-2-x86-64.d +++ b/ld/testsuite/ld-size/size32-2-x86-64.d @@ -8,13 +8,11 @@ DYNAMIC RELOCATION RECORDS OFFSET TYPE VALUE -0+2003d8 R_X86_64_SIZE32 xxx -0+2003dc R_X86_64_SIZE32 yyy -0+2003e0 R_X86_64_SIZE32 zzz -0+2003e4 R_X86_64_SIZE32 zzz-0x000000000000001e -0+2003e8 R_X86_64_SIZE32 zzz\+0x000000000000001e +0+2003b0 R_X86_64_SIZE32 zzz +0+2003b4 R_X86_64_SIZE32 zzz-0x000000000000001e +0+2003b8 R_X86_64_SIZE32 zzz\+0x000000000000001e Contents of section .data: - 2003d8 00000000 00000000 00000000 00000000 ................ - 2003e8 00000000 .... + 2003a8 28000000 28000000 00000000 00000000 ................ + 2003b8 00000000 .... diff --git a/ld/testsuite/ld-size/size64-2-x32.d b/ld/testsuite/ld-size/size64-2-x32.d index 1a30c984fe..987f24412a 100644 --- a/ld/testsuite/ld-size/size64-2-x32.d +++ b/ld/testsuite/ld-size/size64-2-x32.d @@ -8,14 +8,12 @@ DYNAMIC RELOCATION RECORDS OFFSET TYPE VALUE -0+200278 R_X86_64_SIZE32 xxx -0+200280 R_X86_64_SIZE32 yyy -0+200288 R_X86_64_SIZE32 zzz -0+200290 R_X86_64_SIZE64 zzz-0x0000001e -0+200298 R_X86_64_SIZE64 zzz\+0x0000001e +0+200270 R_X86_64_SIZE32 zzz +0+200278 R_X86_64_SIZE64 zzz-0x0000001e +0+200280 R_X86_64_SIZE64 zzz\+0x0000001e Contents of section .data: - 200278 00000000 00000000 00000000 00000000 ................ - 200288 00000000 00000000 00000000 00000000 ................ - 200298 00000000 00000000 ........ + 200260 28000000 00000000 28000000 00000000 ................ + 200270 00000000 00000000 00000000 00000000 ................ + 200280 00000000 00000000 ........ diff --git a/ld/testsuite/ld-size/size64-2-x86-64.d b/ld/testsuite/ld-size/size64-2-x86-64.d index 4cc11cfde3..72c6592e4e 100644 --- a/ld/testsuite/ld-size/size64-2-x86-64.d +++ b/ld/testsuite/ld-size/size64-2-x86-64.d @@ -8,14 +8,12 @@ DYNAMIC RELOCATION RECORDS OFFSET TYPE VALUE -0+2003d8 R_X86_64_SIZE64 xxx -0+2003e0 R_X86_64_SIZE64 yyy -0+2003e8 R_X86_64_SIZE64 zzz -0+2003f0 R_X86_64_SIZE64 zzz-0x000000000000001e -0+2003f8 R_X86_64_SIZE64 zzz\+0x000000000000001e +0+2003b8 R_X86_64_SIZE64 zzz +0+2003c0 R_X86_64_SIZE64 zzz-0x000000000000001e +0+2003c8 R_X86_64_SIZE64 zzz\+0x000000000000001e Contents of section .data: - 2003d8 00000000 00000000 00000000 00000000 ................ - 2003e8 00000000 00000000 00000000 00000000 ................ - 2003f8 00000000 00000000 ........ + 2003a8 28000000 00000000 28000000 00000000 ................ + 2003b8 00000000 00000000 00000000 00000000 ................ + 2003c8 00000000 00000000 ........ -- 2.34.1