Add R_386_GOT32X support to gas and ld
This patch adds support for the R_386_GOT32X relocation proposed in https://groups.google.com/forum/#!topic/ia32-abi/GbJJskkid4I to gas and ld. It updates gas to generate R_386_GOT32X relocation for memory operand, foo@GOT[(%reg)]. We must encode "mov foo@GOT, %eax" with the 0x8b opcode, instead of the 0xb8 opcode, so that it can be transformed to "lea foo, %eax". With the locally defined symbol, foo, we convert mov foo@GOT[(%reg1)], %reg2 to lea foo[@GOTOFF(%reg1)], %reg2 and convert call/jmp *foo@GOT[(%reg)] to nop call foo/jmp foo nop When PIC is false, convert test %reg1, foo@GOT[(%reg2)] to test $foo, %reg1 and convert binop foo@GOT[(%reg1)], %reg2 to binop $foo, %reg2 where binop is one of adc, add, and, cmp, or, sbb, sub, xor instructions. bfd/ * elf32-i386.c: Include opcode/i386.h. (elf_howto_table): Add R_386_GOT32X. (R_386_ext2): Replace R_386_IRELATIVE with R_386_GOT32X. (elf_i386_reloc_type_lookup): Handle BFD_RELOC_386_GOT32X. (need_convert_mov_to_lea): Renamed to ... (need_convert_load): This. (elf_i386_check_relocs): Handle R_386_GOT32X. Replace need_convert_mov_to_lea with need_convert_load. (elf_i386_gc_sweep_hook): Handle R_386_GOT32X. (elf_i386_size_dynamic_sections): Likewise. (elf_i386_relocate_section): Likewise. (elf_i386_convert_mov_to_lea): Renamed to ... (elf_i386_convert_load): This. Replace need_convert_mov_to_lea with need_convert_load. Support R_386_GOT32X transformations. * reloc.c (BFD_RELOC_386_GOT32X): New. * bfd-in2.h: Regenerated. * libbfd.h: Likewise. gas/ * config/tc-i386.c (tc_i386_fix_adjustable): Handle BFD_RELOC_386_GOT32X. (tc_gen_reloc): Likewise. (match_template): Force 0x8b encoding for "mov foo@GOT, %eax". (output_disp): Check for "call/jmp *mem", "mov mem, %reg", "test %reg, mem" and "binop mem, %reg" where binop is one of adc, add, and, cmp, or, sbb, sub, xor instructions. Set fx_tcbit if the REX prefix is generated. Set fx_tcbit2 if BFD_RELOC_386_GOT32X should be generated. (i386_validate_fix): Generate BFD_RELOC_386_GOT32X if fx_tcbit2 is set. gas/testsuite/ * gas/i386/got.d: New file. * gas/i386/got.s: Likewise. * gas/i386/i386.exp: Run got. * gas/i386/localpic.d: Replace R_386_GOT32 with R_386_GOT32X. * gas/i386/mixed-mode-reloc32.d: Likewise. * gas/i386/reloc32.d: Likewise. include/elf/ * i386.h (R_386_GOT32X): New relocation. ld/testsuite/ * ld-i386/branch1.d: New file. * ld-i386/branch1.s: Likewise. * ld-i386/call1.d: Likewise. * ld-i386/call1.s: Likewise. * ld-i386/call2.d: Likewise. * ld-i386/call2.s: Likewise. * ld-i386/got1.dd: Likewise. * ld-i386/got1.out: Likewise. * ld-i386/got1a.S: Likewise. * ld-i386/got1b.c: Likewise. * ld-i386/got1c.c: Likewise. * ld-i386/got1d.S: Likewise. * ld-i386/jmp1.d: Likewise. * ld-i386/jmp1.s: Likewise. * ld-i386/jmp2.d: Likewise. * ld-i386/jmp2.s: Likewise. * ld-i386/load1.d: Likewise. * ld-i386/load1.s: Likewise. * ld-i386/load2.d: Likewise. * ld-i386/load2.s: Likewise. * ld-i386/load3.d: Likewise. * ld-i386/load3.s: Likewise. * ld-i386/load4.s: Likewise. * ld-i386/load4a.d: Likewise. * ld-i386/load4b.d: Likewise. * ld-i386/load5.s: Likewise. * ld-i386/load5a.d: Likewise. * ld-i386/load5b.d: Likewise. * ld-i386/load6.d: Likewise. * ld-i386/load6.s: Likewise. * ld-i386/i386.exp: Run branch1, call1, call2, jmp1, jmp2, load1, load2, load3, load4a, load4b, load5a, load5b and load6 tests. Run got1 test.
This commit is contained in:
parent
99ba512554
commit
02a866936d
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@ -1,3 +1,23 @@
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2015-10-22 H.J. Lu <hongjiu.lu@intel.com>
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* elf32-i386.c: Include opcode/i386.h.
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(elf_howto_table): Add R_386_GOT32X.
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(R_386_ext2): Replace R_386_IRELATIVE with R_386_GOT32X.
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(elf_i386_reloc_type_lookup): Handle BFD_RELOC_386_GOT32X.
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(need_convert_mov_to_lea): Renamed to ...
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(need_convert_load): This.
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(elf_i386_check_relocs): Handle R_386_GOT32X. Replace
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need_convert_mov_to_lea with need_convert_load.
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(elf_i386_gc_sweep_hook): Handle R_386_GOT32X.
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(elf_i386_size_dynamic_sections): Likewise.
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(elf_i386_relocate_section): Likewise.
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(elf_i386_convert_mov_to_lea): Renamed to ...
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(elf_i386_convert_load): This. Replace need_convert_mov_to_lea
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with need_convert_load. Support R_386_GOT32X transformations.
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* reloc.c (BFD_RELOC_386_GOT32X): New.
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* bfd-in2.h: Regenerated.
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* libbfd.h: Likewise.
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2015-10-22 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
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* elf32-s390.c (elf_s390_check_relocs): Set the non_got_ref marker
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@ -3177,6 +3177,7 @@ instruction. */
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BFD_RELOC_386_TLS_DESC_CALL,
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BFD_RELOC_386_TLS_DESC,
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BFD_RELOC_386_IRELATIVE,
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BFD_RELOC_386_GOT32X,
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/* x86-64/elf relocations */
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BFD_RELOC_X86_64_GOT32,
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357
bfd/elf32-i386.c
357
bfd/elf32-i386.c
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@ -29,6 +29,7 @@
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#include "objalloc.h"
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#include "hashtab.h"
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#include "dwarf2.h"
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#include "opcode/i386.h"
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/* 386 uses REL relocations instead of RELA. */
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#define USE_REL 1
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@ -146,9 +147,12 @@ static reloc_howto_type elf_howto_table[]=
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HOWTO(R_386_IRELATIVE, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
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bfd_elf_generic_reloc, "R_386_IRELATIVE",
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TRUE, 0xffffffff, 0xffffffff, FALSE),
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HOWTO(R_386_GOT32X, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
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bfd_elf_generic_reloc, "R_386_GOT32X",
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TRUE, 0xffffffff, 0xffffffff, FALSE),
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/* Another gap. */
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#define R_386_ext2 (R_386_IRELATIVE + 1 - R_386_tls_offset)
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#define R_386_ext2 (R_386_GOT32X + 1 - R_386_tls_offset)
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#define R_386_vt_offset (R_386_GNU_VTINHERIT - R_386_ext2)
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/* GNU extension to record C++ vtable hierarchy. */
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@ -332,6 +336,10 @@ elf_i386_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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TRACE ("BFD_RELOC_386_IRELATIVE");
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return &elf_howto_table[R_386_IRELATIVE - R_386_tls_offset];
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case BFD_RELOC_386_GOT32X:
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TRACE ("BFD_RELOC_386_GOT32X");
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return &elf_howto_table[R_386_GOT32X - R_386_tls_offset];
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case BFD_RELOC_VTABLE_INHERIT:
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TRACE ("BFD_RELOC_VTABLE_INHERIT");
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return &elf_howto_table[R_386_GNU_VTINHERIT - R_386_vt_offset];
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@ -1468,7 +1476,7 @@ elf_i386_tls_transition (struct bfd_link_info *info, bfd *abfd,
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/* Rename some of the generic section flags to better document how they
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are used here. */
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#define need_convert_mov_to_lea sec_flg0
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#define need_convert_load sec_flg0
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/* Look through the relocs for a section during the first phase, and
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calculate needed space in the global offset table, procedure linkage
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@ -1580,6 +1588,7 @@ elf_i386_check_relocs (bfd *abfd,
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case R_386_PC32:
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case R_386_PLT32:
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case R_386_GOT32:
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case R_386_GOT32X:
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if (htab->elf.dynobj == NULL)
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htab->elf.dynobj = abfd;
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if (!_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info))
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@ -1637,6 +1646,7 @@ elf_i386_check_relocs (bfd *abfd,
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/* Fall through */
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case R_386_GOT32:
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case R_386_GOT32X:
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case R_386_TLS_GD:
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case R_386_TLS_GOTDESC:
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case R_386_TLS_DESC_CALL:
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@ -1647,7 +1657,10 @@ elf_i386_check_relocs (bfd *abfd,
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switch (r_type)
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{
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default:
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case R_386_GOT32: tls_type = GOT_NORMAL; break;
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case R_386_GOT32:
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case R_386_GOT32X:
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tls_type = GOT_NORMAL;
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break;
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case R_386_TLS_GD: tls_type = GOT_TLS_GD; break;
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case R_386_TLS_GOTDESC:
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case R_386_TLS_DESC_CALL:
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@ -1948,9 +1961,9 @@ do_size:
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return FALSE;
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}
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if (r_type == R_386_GOT32
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if ((r_type == R_386_GOT32 || r_type == R_386_GOT32X)
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&& (h == NULL || h->type != STT_GNU_IFUNC))
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sec->need_convert_mov_to_lea = 1;
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sec->need_convert_load = 1;
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}
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return TRUE;
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@ -2074,6 +2087,7 @@ elf_i386_gc_sweep_hook (bfd *abfd,
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case R_386_TLS_IE:
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case R_386_TLS_GOTIE:
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case R_386_GOT32:
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case R_386_GOT32X:
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if (h != NULL)
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{
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if (h->got.refcount > 0)
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@ -2718,14 +2732,27 @@ elf_i386_readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
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return TRUE;
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}
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/* Convert
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mov foo@GOT(%reg), %reg
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/* With the local symbol, foo, we convert
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mov foo@GOT[(%reg1)], %reg2
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to
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lea foo@GOTOFF(%reg), %reg
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with the local symbol, foo. */
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lea foo[@GOTOFF(%reg1)], %reg2
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and convert
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call/jmp *foo@GOT[(%reg)]
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to
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nop call foo/jmp foo nop
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When PIC is false, convert
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test %reg1, foo@GOT[(%reg2)]
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to
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test $foo, %reg1
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and convert
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binop foo@GOT[(%reg1)], %reg2
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to
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binop $foo, %reg2
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where binop is one of adc, add, and, cmp, or, sbb, sub, xor
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instructions. */
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static bfd_boolean
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elf_i386_convert_mov_to_lea (bfd *abfd, asection *sec,
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elf_i386_convert_load (bfd *abfd, asection *sec,
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struct bfd_link_info *link_info)
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{
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Elf_Internal_Shdr *symtab_hdr;
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/* Nothing to do if there is no need or no output. */
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if ((sec->flags & (SEC_CODE | SEC_RELOC)) != (SEC_CODE | SEC_RELOC)
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|| sec->need_convert_mov_to_lea == 0
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|| sec->need_convert_load == 0
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|| bfd_is_abs_section (sec->output_section))
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return TRUE;
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unsigned int r_symndx = ELF32_R_SYM (irel->r_info);
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unsigned int indx;
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struct elf_link_hash_entry *h;
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unsigned int opcode;
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unsigned int modrm;
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bfd_vma roff;
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bfd_boolean baseless;
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Elf_Internal_Sym *isym;
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unsigned int addend;
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unsigned int nop;
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bfd_vma nop_offset;
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if (r_type != R_386_GOT32)
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if (r_type != R_386_GOT32 && r_type != R_386_GOT32X)
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continue;
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/* Get the symbol referred to by the reloc. */
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roff = irel->r_offset;
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if (roff < 2)
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continue;
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modrm = bfd_get_8 (abfd, contents + roff - 1);
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baseless = (modrm & 0xc7) == 0x5;
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if (r_type == R_386_GOT32X
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&& baseless
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&& bfd_link_pic (link_info))
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{
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/* For PIC, disallow R_386_GOT32X without a base register
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since we don't know what the GOT base is. Allow
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R_386_GOT32 for existing object files. */
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const char *name;
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if (r_symndx < symtab_hdr->sh_info)
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{
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isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd,
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r_symndx);
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name = bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL);
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}
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else
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{
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indx = r_symndx - symtab_hdr->sh_info;
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h = elf_sym_hashes (abfd)[indx];
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BFD_ASSERT (h != NULL);
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name = h->root.root.string;
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}
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(*_bfd_error_handler)
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(_("%B: direct GOT relocation R_386_GOT32X against `%s' without base register can not be used when making a shared object"),
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abfd, name);
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goto error_return;
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}
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opcode = bfd_get_8 (abfd, contents + roff - 2);
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/* It is OK to convert mov to lea. */
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if (opcode != 0x8b)
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{
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/* Only convert R_386_GOT32X relocation for call, jmp or
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one of adc, add, and, cmp, or, sbb, sub, test, xor
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instructions. */
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if (r_type != R_386_GOT32X)
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continue;
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/* It is OK to convert indirect branch to direct branch. It
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is OK to convert adc, add, and, cmp, or, sbb, sub, test,
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xor only when PIC is false. */
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if (opcode != 0xff && bfd_link_pic (link_info))
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continue;
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}
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/* Try to convert R_386_GOT32 and R_386_GOT32X. Get the symbol
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referred to by the reloc. */
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if (r_symndx < symtab_hdr->sh_info)
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{
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Elf_Internal_Sym *isym;
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isym = bfd_sym_from_r_symndx (&htab->sym_cache,
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abfd, r_symndx);
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/* STT_GNU_IFUNC must keep R_386_GOT32 relocation. */
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if (ELF_ST_TYPE (isym->st_info) != STT_GNU_IFUNC
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&& irel->r_offset >= 2
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&& bfd_get_8 (abfd, contents + irel->r_offset - 2) == 0x8b)
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{
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bfd_put_8 (abfd, 0x8d, contents + irel->r_offset - 2);
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irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
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if (local_got_refcounts != NULL
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&& local_got_refcounts[r_symndx] > 0)
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local_got_refcounts[r_symndx] -= 1;
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changed_contents = TRUE;
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changed_relocs = TRUE;
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}
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continue;
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/* STT_GNU_IFUNC must keep GOT32 relocations. */
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if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
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continue;
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h = NULL;
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if (opcode == 0x0ff)
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/* Convert "call/jmp *foo@GOT[(%reg)]". */
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goto convert_branch;
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else
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/* Convert "mov foo@GOT[(%reg1)], %reg2",
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"test %reg1, foo@GOT(%reg2)" and
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"binop foo@GOT[(%reg1)], %reg2". */
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goto convert_load;
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}
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indx = r_symndx - symtab_hdr->sh_info;
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|| h->root.type == bfd_link_hash_warning)
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h = (struct elf_link_hash_entry *) h->root.u.i.link;
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/* STT_GNU_IFUNC must keep R_386_GOT32 relocation. We also avoid
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optimizing _DYNAMIC since ld.so may use its link-time address. */
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if ((h->root.type == bfd_link_hash_defined
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|| h->root.type == bfd_link_hash_defweak)
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&& h->type != STT_GNU_IFUNC
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&& h != htab->elf.hdynamic
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&& SYMBOL_REFERENCES_LOCAL (link_info, h)
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&& irel->r_offset >= 2
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&& bfd_get_8 (abfd, contents + irel->r_offset - 2) == 0x8b)
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/* STT_GNU_IFUNC must keep GOT32 relocations. */
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if (h->type == STT_GNU_IFUNC)
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continue;
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if (opcode == 0xff)
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{
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bfd_put_8 (abfd, 0x8d, contents + irel->r_offset - 2);
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irel->r_info = ELF32_R_INFO (r_symndx, R_386_GOTOFF);
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if (h->got.refcount > 0)
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h->got.refcount -= 1;
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changed_contents = TRUE;
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changed_relocs = TRUE;
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/* We have "call/jmp *foo@GOT[(%reg)]". */
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if ((h->root.type == bfd_link_hash_defined
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|| h->root.type == bfd_link_hash_defweak)
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&& SYMBOL_REFERENCES_LOCAL (link_info, h))
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{
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/* The function is locally defined. */
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convert_branch:
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addend = bfd_get_32 (abfd, contents + roff);
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/* Addend for R_386_GOT32X relocation must be 0. */
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if (addend != 0)
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continue;
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/* Convert R_386_GOT32X to R_386_PC32. */
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if (modrm == 0x15 || (modrm & 0xf8) == 0x90)
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{
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/* Convert to "nop call foo". ADDR_PREFIX_OPCODE
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is a nop prefix. */
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modrm = 0xe8;
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nop = ADDR_PREFIX_OPCODE;
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nop_offset = roff - 2;
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}
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else
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{
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/* Convert to "jmp foo nop". */
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modrm = 0xe9;
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nop = NOP_OPCODE;
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nop_offset = roff + 3;
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irel->r_offset -= 1;
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}
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|
||||
bfd_put_8 (abfd, nop, contents + nop_offset);
|
||||
bfd_put_8 (abfd, modrm, contents + irel->r_offset - 1);
|
||||
/* When converting to PC-relative relocation, we
|
||||
need to adjust addend by -4. */
|
||||
bfd_put_32 (abfd, -4, contents + irel->r_offset);
|
||||
irel->r_info = ELF32_R_INFO (r_symndx, R_386_PC32);
|
||||
|
||||
if (h)
|
||||
{
|
||||
if (h->got.refcount > 0)
|
||||
h->got.refcount -= 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (local_got_refcounts != NULL
|
||||
&& local_got_refcounts[r_symndx] > 0)
|
||||
local_got_refcounts[r_symndx] -= 1;
|
||||
}
|
||||
|
||||
changed_contents = TRUE;
|
||||
changed_relocs = TRUE;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* We have "mov foo@GOT[(%re1g)], %reg2",
|
||||
"test %reg1, foo@GOT(%reg2)" and
|
||||
"binop foo@GOT[(%reg1)], %reg2".
|
||||
|
||||
Avoid optimizing _DYNAMIC since ld.so may use its
|
||||
link-time address. */
|
||||
if (h == htab->elf.hdynamic)
|
||||
continue;
|
||||
|
||||
if ((h->root.type == bfd_link_hash_defined
|
||||
|| h->root.type == bfd_link_hash_defweak)
|
||||
&& SYMBOL_REFERENCES_LOCAL (link_info, h))
|
||||
{
|
||||
convert_load:
|
||||
if (opcode == 0x8b)
|
||||
{
|
||||
/* Convert "mov foo@GOT(%reg1), %reg2" to
|
||||
"lea foo@GOTOFF(%reg1), %reg2". */
|
||||
if (r_type == R_386_GOT32X
|
||||
&& (baseless || !bfd_link_pic (link_info)))
|
||||
{
|
||||
r_type = R_386_32;
|
||||
/* For R_386_32, convert
|
||||
"lea foo@GOTOFF(%reg1), %reg2" to
|
||||
"lea foo@GOT, %reg2". */
|
||||
if (!baseless)
|
||||
{
|
||||
modrm = 0x5 | (modrm & 0x38);
|
||||
bfd_put_8 (abfd, modrm, contents + roff - 1);
|
||||
}
|
||||
}
|
||||
else
|
||||
r_type = R_386_GOTOFF;
|
||||
opcode = 0x8d;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Addend for R_386_GOT32X relocation must be 0. */
|
||||
addend = bfd_get_32 (abfd, contents + roff);
|
||||
if (addend != 0)
|
||||
continue;
|
||||
|
||||
if (opcode == 0x85)
|
||||
{
|
||||
/* Convert "test %reg1, foo@GOT(%reg2)" to
|
||||
"test $foo, %reg1". */
|
||||
modrm = 0xc0 | (modrm & 0x38) >> 3;
|
||||
opcode = 0xf7;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Convert "binop foo@GOT(%reg1), %reg2" to
|
||||
"binop $foo, %reg2". */
|
||||
modrm = (0xc0
|
||||
| (modrm & 0x38) >> 3
|
||||
| (opcode & 0x3c));
|
||||
opcode = 0x81;
|
||||
}
|
||||
bfd_put_8 (abfd, modrm, contents + roff - 1);
|
||||
r_type = R_386_32;
|
||||
}
|
||||
|
||||
bfd_put_8 (abfd, opcode, contents + roff - 2);
|
||||
irel->r_info = ELF32_R_INFO (r_symndx, r_type);
|
||||
|
||||
if (h)
|
||||
{
|
||||
if (h->got.refcount > 0)
|
||||
h->got.refcount -= 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (local_got_refcounts != NULL
|
||||
&& local_got_refcounts[r_symndx] > 0)
|
||||
local_got_refcounts[r_symndx] -= 1;
|
||||
}
|
||||
|
||||
changed_contents = TRUE;
|
||||
changed_relocs = TRUE;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -2914,7 +3126,7 @@ elf_i386_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
|
|||
{
|
||||
struct elf_dyn_relocs *p;
|
||||
|
||||
if (!elf_i386_convert_mov_to_lea (ibfd, s, info))
|
||||
if (!elf_i386_convert_load (ibfd, s, info))
|
||||
return FALSE;
|
||||
|
||||
for (p = ((struct elf_dyn_relocs *)
|
||||
|
@ -3664,6 +3876,7 @@ elf_i386_relocate_section (bfd *output_bfd,
|
|||
goto do_relocation;
|
||||
|
||||
case R_386_GOT32:
|
||||
case R_386_GOT32X:
|
||||
base_got = htab->elf.sgot;
|
||||
off = h->got.offset;
|
||||
|
||||
|
@ -3741,7 +3954,61 @@ elf_i386_relocate_section (bfd *output_bfd,
|
|||
eh = (struct elf_i386_link_hash_entry *) h;
|
||||
switch (r_type)
|
||||
{
|
||||
case R_386_GOT32X:
|
||||
/* Avoid optimizing _DYNAMIC since ld.so may use its
|
||||
link-time address. */
|
||||
if (h == htab->elf.hdynamic)
|
||||
goto r_386_got32;
|
||||
|
||||
if (bfd_link_pic (info))
|
||||
{
|
||||
/* It is OK to convert mov to lea and convert indirect
|
||||
branch to direct branch. It is OK to convert adc,
|
||||
add, and, cmp, or, sbb, sub, test, xor only when PIC
|
||||
is false. */
|
||||
unsigned int opcode;
|
||||
opcode = bfd_get_8 (abfd, contents + rel->r_offset - 2);
|
||||
if (opcode != 0x8b && opcode != 0xff)
|
||||
goto r_386_got32;
|
||||
}
|
||||
|
||||
/* Resolve "mov GOT[(%reg)], %reg",
|
||||
"call/jmp *GOT[(%reg)]", "test %reg, foo@GOT[(%reg)]"
|
||||
and "binop foo@GOT[(%reg)], %reg". */
|
||||
if (h == NULL
|
||||
|| (h->plt.offset == (bfd_vma) -1
|
||||
&& h->got.offset == (bfd_vma) -1)
|
||||
|| htab->elf.sgotplt == NULL)
|
||||
abort ();
|
||||
|
||||
offplt = (htab->elf.sgotplt->output_section->vma
|
||||
+ htab->elf.sgotplt->output_offset);
|
||||
|
||||
/* It is relative to .got.plt section. */
|
||||
if (h->got.offset != (bfd_vma) -1)
|
||||
/* Use GOT entry. */
|
||||
relocation = (htab->elf.sgot->output_section->vma
|
||||
+ htab->elf.sgot->output_offset
|
||||
+ h->got.offset - offplt);
|
||||
else
|
||||
/* Use GOTPLT entry. */
|
||||
relocation = (h->plt.offset / plt_entry_size - 1 + 3) * 4;
|
||||
|
||||
if (!bfd_link_pic (info))
|
||||
{
|
||||
/* If not PIC, add the .got.plt section address for
|
||||
baseless adressing. */
|
||||
unsigned int modrm;
|
||||
modrm = bfd_get_8 (abfd, contents + rel->r_offset - 1);
|
||||
if ((modrm & 0xc7) == 0x5)
|
||||
relocation += offplt;
|
||||
}
|
||||
|
||||
unresolved_reloc = FALSE;
|
||||
break;
|
||||
|
||||
case R_386_GOT32:
|
||||
r_386_got32:
|
||||
/* Relocation is to the entry for this symbol in the global
|
||||
offset table. */
|
||||
if (htab->elf.sgot == NULL)
|
||||
|
|
|
@ -1292,6 +1292,7 @@ static const char *const bfd_reloc_code_real_names[] = { "@@uninitialized@@",
|
|||
"BFD_RELOC_386_TLS_DESC_CALL",
|
||||
"BFD_RELOC_386_TLS_DESC",
|
||||
"BFD_RELOC_386_IRELATIVE",
|
||||
"BFD_RELOC_386_GOT32X",
|
||||
"BFD_RELOC_X86_64_GOT32",
|
||||
"BFD_RELOC_X86_64_PLT32",
|
||||
"BFD_RELOC_X86_64_COPY",
|
||||
|
|
|
@ -2676,6 +2676,8 @@ ENUMX
|
|||
BFD_RELOC_386_TLS_DESC
|
||||
ENUMX
|
||||
BFD_RELOC_386_IRELATIVE
|
||||
ENUMX
|
||||
BFD_RELOC_386_GOT32X
|
||||
ENUMDOC
|
||||
i386/elf relocations
|
||||
|
||||
|
|
|
@ -1,3 +1,17 @@
|
|||
2015-10-22 H.J. Lu <hongjiu.lu@intel.com>
|
||||
|
||||
* config/tc-i386.c (tc_i386_fix_adjustable): Handle
|
||||
BFD_RELOC_386_GOT32X.
|
||||
(tc_gen_reloc): Likewise.
|
||||
(match_template): Force 0x8b encoding for "mov foo@GOT, %eax".
|
||||
(output_disp): Check for "call/jmp *mem", "mov mem, %reg",
|
||||
"test %reg, mem" and "binop mem, %reg" where binop is one of
|
||||
adc, add, and, cmp, or, sbb, sub, xor instructions. Set
|
||||
fx_tcbit if the REX prefix is generated. Set fx_tcbit2 if
|
||||
BFD_RELOC_386_GOT32X should be generated.
|
||||
(i386_validate_fix): Generate BFD_RELOC_386_GOT32X if fx_tcbit2
|
||||
is set.
|
||||
|
||||
2015-10-21 Nick Clifton <nickc@redhat.com>
|
||||
|
||||
PR gas/19109
|
||||
|
|
|
@ -2928,6 +2928,7 @@ tc_i386_fix_adjustable (fixS *fixP ATTRIBUTE_UNUSED)
|
|||
|| fixP->fx_r_type == BFD_RELOC_386_GOTOFF
|
||||
|| fixP->fx_r_type == BFD_RELOC_386_PLT32
|
||||
|| fixP->fx_r_type == BFD_RELOC_386_GOT32
|
||||
|| fixP->fx_r_type == BFD_RELOC_386_GOT32X
|
||||
|| fixP->fx_r_type == BFD_RELOC_386_TLS_GD
|
||||
|| fixP->fx_r_type == BFD_RELOC_386_TLS_LDM
|
||||
|| fixP->fx_r_type == BFD_RELOC_386_TLS_LDO_32
|
||||
|
@ -4791,6 +4792,10 @@ match_template (void)
|
|||
}
|
||||
}
|
||||
|
||||
/* Force 0x8b encoding for "mov foo@GOT, %eax". */
|
||||
if (i.reloc[0] == BFD_RELOC_386_GOT32 && t->base_opcode == 0xa0)
|
||||
continue;
|
||||
|
||||
/* We check register size if needed. */
|
||||
check_register = t->opcode_modifier.checkregsize;
|
||||
overlap0 = operand_type_and (i.types[0], operand_types[0]);
|
||||
|
@ -7157,6 +7162,7 @@ output_disp (fragS *insn_start_frag, offsetT insn_start_off)
|
|||
int size = disp_size (n);
|
||||
int sign = i.types[n].bitfield.disp32s;
|
||||
int pcrel = (i.flags[n] & Operand_PCrel) != 0;
|
||||
fixS *fixP;
|
||||
|
||||
/* We can't have 8 bit displacement here. */
|
||||
gas_assert (!i.types[n].bitfield.disp8);
|
||||
|
@ -7225,8 +7231,34 @@ output_disp (fragS *insn_start_frag, offsetT insn_start_off)
|
|||
insn, and that is taken care of in other code. */
|
||||
reloc_type = BFD_RELOC_X86_64_GOTPC32;
|
||||
}
|
||||
fix_new_exp (frag_now, p - frag_now->fr_literal, size,
|
||||
i.op[n].disps, pcrel, reloc_type);
|
||||
fixP = fix_new_exp (frag_now, p - frag_now->fr_literal,
|
||||
size, i.op[n].disps, pcrel,
|
||||
reloc_type);
|
||||
/* Check for "call/jmp *mem", "mov mem, %reg",
|
||||
"test %reg, mem" and "binop mem, %reg" where binop
|
||||
is one of adc, add, and, cmp, or, sbb, sub, xor
|
||||
instructions. */
|
||||
if ((i.rm.mode == 2
|
||||
|| (i.rm.mode == 0 && i.rm.regmem == 5))
|
||||
&& ((i.operands == 1
|
||||
&& i.tm.base_opcode == 0xff
|
||||
&& (i.rm.reg == 2 || i.rm.reg == 4))
|
||||
|| (i.operands == 2
|
||||
&& (i.tm.base_opcode == 0x8b
|
||||
|| i.tm.base_opcode == 0x85
|
||||
|| (i.tm.base_opcode & 0xc7) == 0x03))))
|
||||
{
|
||||
if (object_64bit)
|
||||
{
|
||||
fixP->fx_tcbit = i.rex != 0;
|
||||
if (i.base_reg
|
||||
&& (i.base_reg->reg_num == RegRip
|
||||
|| i.base_reg->reg_num == RegEip))
|
||||
fixP->fx_tcbit2 = 1;
|
||||
}
|
||||
else
|
||||
fixP->fx_tcbit2 = 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
@ -10321,23 +10353,39 @@ s_bss (int ignore ATTRIBUTE_UNUSED)
|
|||
void
|
||||
i386_validate_fix (fixS *fixp)
|
||||
{
|
||||
if (fixp->fx_subsy && fixp->fx_subsy == GOT_symbol)
|
||||
if (fixp->fx_subsy)
|
||||
{
|
||||
if (fixp->fx_r_type == BFD_RELOC_32_PCREL)
|
||||
if (fixp->fx_subsy == GOT_symbol)
|
||||
{
|
||||
if (!object_64bit)
|
||||
abort ();
|
||||
fixp->fx_r_type = BFD_RELOC_X86_64_GOTPCREL;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (!object_64bit)
|
||||
fixp->fx_r_type = BFD_RELOC_386_GOTOFF;
|
||||
if (fixp->fx_r_type == BFD_RELOC_32_PCREL)
|
||||
{
|
||||
if (!object_64bit)
|
||||
abort ();
|
||||
#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
|
||||
if (fixp->fx_tcbit2)
|
||||
fixp->fx_r_type = BFD_RELOC_X86_64_GOTPCREL;
|
||||
else
|
||||
#endif
|
||||
fixp->fx_r_type = BFD_RELOC_X86_64_GOTPCREL;
|
||||
}
|
||||
else
|
||||
fixp->fx_r_type = BFD_RELOC_X86_64_GOTOFF64;
|
||||
{
|
||||
if (!object_64bit)
|
||||
fixp->fx_r_type = BFD_RELOC_386_GOTOFF;
|
||||
else
|
||||
fixp->fx_r_type = BFD_RELOC_X86_64_GOTOFF64;
|
||||
}
|
||||
fixp->fx_subsy = 0;
|
||||
}
|
||||
fixp->fx_subsy = 0;
|
||||
}
|
||||
#if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
|
||||
else if (!object_64bit)
|
||||
{
|
||||
if (fixp->fx_r_type == BFD_RELOC_386_GOT32
|
||||
&& fixp->fx_tcbit2)
|
||||
fixp->fx_r_type = BFD_RELOC_386_GOT32X;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
arelent *
|
||||
|
@ -10373,6 +10421,7 @@ tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp)
|
|||
case BFD_RELOC_X86_64_GOTPCREL:
|
||||
case BFD_RELOC_386_PLT32:
|
||||
case BFD_RELOC_386_GOT32:
|
||||
case BFD_RELOC_386_GOT32X:
|
||||
case BFD_RELOC_386_GOTOFF:
|
||||
case BFD_RELOC_386_GOTPC:
|
||||
case BFD_RELOC_386_TLS_GD:
|
||||
|
|
|
@ -1,3 +1,12 @@
|
|||
2015-10-22 H.J. Lu <hongjiu.lu@intel.com>
|
||||
|
||||
* gas/i386/got.d: New file.
|
||||
* gas/i386/got.s: Likewise.
|
||||
* gas/i386/i386.exp: Run got.
|
||||
* gas/i386/localpic.d: Replace R_386_GOT32 with R_386_GOT32X.
|
||||
* gas/i386/mixed-mode-reloc32.d: Likewise.
|
||||
* gas/i386/reloc32.d: Likewise.
|
||||
|
||||
2015-10-22 Alan Modra <amodra@gmail.com>
|
||||
|
||||
PR gas/18500
|
||||
|
|
|
@ -0,0 +1,29 @@
|
|||
#objdump: -dwr
|
||||
|
||||
.*: +file format .*
|
||||
|
||||
|
||||
Disassembly of section .text:
|
||||
|
||||
0+ <_start>:
|
||||
[ ]*[a-f0-9]+: b8 00 00 00 00 mov \$0x0,%eax 1: R_386_GOT32 foo
|
||||
[ ]*[a-f0-9]+: 8b 05 00 00 00 00 mov 0x0,%eax 7: R_386_GOT32X foo
|
||||
[ ]*[a-f0-9]+: 8b 80 00 00 00 00 mov 0x0\(%eax\),%eax d: R_386_GOT32X foo
|
||||
[ ]*[a-f0-9]+: 05 00 00 00 00 add \$0x0,%eax 12: R_386_GOT32 foo
|
||||
[ ]*[a-f0-9]+: 03 05 00 00 00 00 add 0x0,%eax 18: R_386_GOT32X foo
|
||||
[ ]*[a-f0-9]+: 03 80 00 00 00 00 add 0x0\(%eax\),%eax 1e: R_386_GOT32X foo
|
||||
[ ]*[a-f0-9]+: ff 15 00 00 00 00 call \*0x0 24: R_386_GOT32X foo
|
||||
[ ]*[a-f0-9]+: ff 90 00 00 00 00 call \*0x0\(%eax\) 2a: R_386_GOT32X foo
|
||||
[ ]*[a-f0-9]+: ff 25 00 00 00 00 jmp \*0x0 30: R_386_GOT32X foo
|
||||
[ ]*[a-f0-9]+: ff a0 00 00 00 00 jmp \*0x0\(%eax\) 36: R_386_GOT32X foo
|
||||
[ ]*[a-f0-9]+: b8 00 00 00 00 mov \$0x0,%eax 3b: R_386_GOT32 foo
|
||||
[ ]*[a-f0-9]+: 8b 05 00 00 00 00 mov 0x0,%eax 41: R_386_GOT32X foo
|
||||
[ ]*[a-f0-9]+: 8b 80 00 00 00 00 mov 0x0\(%eax\),%eax 47: R_386_GOT32X foo
|
||||
[ ]*[a-f0-9]+: 05 00 00 00 00 add \$0x0,%eax 4c: R_386_GOT32 foo
|
||||
[ ]*[a-f0-9]+: 03 05 00 00 00 00 add 0x0,%eax 52: R_386_GOT32X foo
|
||||
[ ]*[a-f0-9]+: 03 80 00 00 00 00 add 0x0\(%eax\),%eax 58: R_386_GOT32X foo
|
||||
[ ]*[a-f0-9]+: ff 90 00 00 00 00 call \*0x0\(%eax\) 5e: R_386_GOT32X foo
|
||||
[ ]*[a-f0-9]+: ff 15 00 00 00 00 call \*0x0 64: R_386_GOT32X foo
|
||||
[ ]*[a-f0-9]+: ff a0 00 00 00 00 jmp \*0x0\(%eax\) 6a: R_386_GOT32X foo
|
||||
[ ]*[a-f0-9]+: ff 25 00 00 00 00 jmp \*0x0 70: R_386_GOT32X foo
|
||||
#pass
|
|
@ -0,0 +1,29 @@
|
|||
.text
|
||||
_start:
|
||||
movl $foo@GOT, %eax
|
||||
movl foo@GOT, %eax
|
||||
movl foo@GOT(%eax), %eax
|
||||
|
||||
addl $foo@GOT, %eax
|
||||
addl foo@GOT, %eax
|
||||
addl foo@GOT(%eax), %eax
|
||||
|
||||
call *foo@GOT
|
||||
call *foo@GOT(%eax)
|
||||
jmp *foo@GOT
|
||||
jmp *foo@GOT(%eax)
|
||||
|
||||
.intel_syntax noprefix
|
||||
|
||||
mov eax, offset foo@got
|
||||
mov eax, DWORD PTR [foo@GOT]
|
||||
mov eax, DWORD PTR [eax + foo@GOT]
|
||||
|
||||
add eax, offset foo@got
|
||||
add eax, DWORD PTR [foo@GOT]
|
||||
add eax, DWORD PTR [eax + foo@GOT]
|
||||
|
||||
call DWORD PTR [eax + foo@GOT]
|
||||
call DWORD PTR [foo@GOT]
|
||||
jmp DWORD PTR [eax + foo@GOT]
|
||||
jmp DWORD PTR [foo@GOT]
|
|
@ -404,6 +404,8 @@ if [expr ([istarget "i*86-*-*"] || [istarget "x86_64-*-*"]) && [gas_32_check]]
|
|||
run_dump_test "relax-3"
|
||||
run_dump_test "relax-4"
|
||||
|
||||
run_dump_test "got"
|
||||
|
||||
if {![istarget "*-*-nacl*"]} then {
|
||||
run_dump_test "iamcu-1"
|
||||
run_dump_test "iamcu-2"
|
||||
|
|
|
@ -3,7 +3,7 @@
|
|||
|
||||
Relocation section '.rel.text' at offset 0x[0-9a-f]+ contains 1 entries:
|
||||
Offset Info Type Sym.Value Sym. Name
|
||||
[0-9a-f]+ +[0-9a-f]+ R_386_GOT32 +[0-9a-f]+ +foo
|
||||
[0-9a-f]+ +[0-9a-f]+ R_386_GOT32X +[0-9a-f]+ +foo
|
||||
#...
|
||||
+[0-9]+: +[0-9a-f]+ +[0-9a-f]+ +NOTYPE +LOCAL +DEFAULT +[0-9]+ +foo
|
||||
#pass
|
||||
|
|
|
@ -6,9 +6,9 @@
|
|||
|
||||
RELOCATION RECORDS FOR \[.text\]:
|
||||
OFFSET[ ]+TYPE[ ]+VALUE[ ]*
|
||||
[0-9a-f]+[ ]+R_386_GOT32[ ]+xtrn[ ]*
|
||||
[0-9a-f]+[ ]+R_386_GOT32X[ ]+xtrn[ ]*
|
||||
[0-9a-f]+[ ]+R_386_PLT32[ ]+xtrn[ ]*
|
||||
[0-9a-f]+[ ]+R_386_GOT32[ ]+xtrn[ ]*
|
||||
[0-9a-f]+[ ]+R_386_GOT32X[ ]+xtrn[ ]*
|
||||
[0-9a-f]+[ ]+R_386_PLT32[ ]+xtrn[ ]*
|
||||
[0-9a-f]+[ ]+R_386_GOT32[ ]+xtrn[ ]*
|
||||
[0-9a-f]+[ ]+R_386_GOT32X[ ]+xtrn[ ]*
|
||||
[0-9a-f]+[ ]+R_386_PLT32[ ]+xtrn[ ]*
|
||||
|
|
|
@ -18,7 +18,7 @@ Disassembly of section \.text:
|
|||
.*[ ]+R_386_PC32[ ]+xtrn
|
||||
.*[ ]+R_386_PC8[ ]+xtrn
|
||||
.*[ ]+R_386_GOT32[ ]+xtrn
|
||||
.*[ ]+R_386_GOT32[ ]+xtrn
|
||||
.*[ ]+R_386_GOT32X[ ]+xtrn
|
||||
.*[ ]+R_386_GOTOFF[ ]+xtrn
|
||||
.*[ ]+R_386_GOTOFF[ ]+xtrn
|
||||
.*[ ]+R_386_GOTPC[ ]+_GLOBAL_OFFSET_TABLE_
|
||||
|
|
|
@ -1,3 +1,7 @@
|
|||
2015-10-22 H.J. Lu <hongjiu.lu@intel.com>
|
||||
|
||||
* i386.h (R_386_GOT32X): New relocation.
|
||||
|
||||
2015-10-07 Cupertino Miranda <cmiranda@synopsys.com>
|
||||
|
||||
* arc-reloc.def: Macro file with definition of all relocation
|
||||
|
|
|
@ -66,6 +66,8 @@ START_RELOC_NUMBERS (elf_i386_reloc_type)
|
|||
RELOC_NUMBER (R_386_TLS_DESC_CALL,40)
|
||||
RELOC_NUMBER (R_386_TLS_DESC, 41)
|
||||
RELOC_NUMBER (R_386_IRELATIVE, 42) /* Adjust indirectly by program base */
|
||||
/* Load from 32 bit GOT entry, relaxable. */
|
||||
RELOC_NUMBER (R_386_GOT32X, 43)
|
||||
|
||||
/* Used by Intel. */
|
||||
RELOC_NUMBER (R_386_USED_BY_INTEL_200, 200)
|
||||
|
|
|
@ -1,3 +1,39 @@
|
|||
2015-10-22 H.J. Lu <hongjiu.lu@intel.com>
|
||||
|
||||
* ld-i386/branch1.d: New file.
|
||||
* ld-i386/branch1.s: Likewise.
|
||||
* ld-i386/call1.d: Likewise.
|
||||
* ld-i386/call1.s: Likewise.
|
||||
* ld-i386/call2.d: Likewise.
|
||||
* ld-i386/call2.s: Likewise.
|
||||
* ld-i386/got1.dd: Likewise.
|
||||
* ld-i386/got1.out: Likewise.
|
||||
* ld-i386/got1a.S: Likewise.
|
||||
* ld-i386/got1b.c: Likewise.
|
||||
* ld-i386/got1c.c: Likewise.
|
||||
* ld-i386/got1d.S: Likewise.
|
||||
* ld-i386/jmp1.d: Likewise.
|
||||
* ld-i386/jmp1.s: Likewise.
|
||||
* ld-i386/jmp2.d: Likewise.
|
||||
* ld-i386/jmp2.s: Likewise.
|
||||
* ld-i386/load1.d: Likewise.
|
||||
* ld-i386/load1.s: Likewise.
|
||||
* ld-i386/load2.d: Likewise.
|
||||
* ld-i386/load2.s: Likewise.
|
||||
* ld-i386/load3.d: Likewise.
|
||||
* ld-i386/load3.s: Likewise.
|
||||
* ld-i386/load4.s: Likewise.
|
||||
* ld-i386/load4a.d: Likewise.
|
||||
* ld-i386/load4b.d: Likewise.
|
||||
* ld-i386/load5.s: Likewise.
|
||||
* ld-i386/load5a.d: Likewise.
|
||||
* ld-i386/load5b.d: Likewise.
|
||||
* ld-i386/load6.d: Likewise.
|
||||
* ld-i386/load6.s: Likewise.
|
||||
* ld-i386/i386.exp: Run branch1, call1, call2, jmp1, jmp2,
|
||||
load1, load2, load3, load4a, load4b, load5a, load5b and load6
|
||||
tests. Run got1 test.
|
||||
|
||||
2015-10-22 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
|
||||
|
||||
* ld-ifunc/ifunc.exp: Run ifunc tests on s390* targets.
|
||||
|
|
|
@ -0,0 +1,17 @@
|
|||
#as: --32
|
||||
#ld: -melf_i386
|
||||
#objdump: -dw
|
||||
|
||||
.*: +file format .*
|
||||
|
||||
|
||||
Disassembly of section .text:
|
||||
|
||||
#...
|
||||
[ ]*[a-f0-9]+: 67 e8 ([0-9a-f]{2} ){4} * addr16 call +[a-f0-9]+ <foo>
|
||||
[ ]*[a-f0-9]+: 67 e8 ([0-9a-f]{2} ){4} * addr16 call +[a-f0-9]+ <bar>
|
||||
[ ]*[a-f0-9]+: e9 ([0-9a-f]{2} ){4} * jmp +[a-f0-9]+ <foo>
|
||||
[ ]*[a-f0-9]+: 90 nop
|
||||
[ ]*[a-f0-9]+: e9 ([0-9a-f]{2} ){4} * jmp +[a-f0-9]+ <bar>
|
||||
[ ]*[a-f0-9]+: 90 nop
|
||||
#pass
|
|
@ -0,0 +1,15 @@
|
|||
.text
|
||||
.type bar, @function
|
||||
bar:
|
||||
ret
|
||||
.globl foo
|
||||
.type foo, @function
|
||||
foo:
|
||||
ret
|
||||
.globl _start
|
||||
.type _start, @function
|
||||
_start:
|
||||
call *foo@GOT
|
||||
call *bar@GOT
|
||||
jmp *foo@GOT
|
||||
jmp *bar@GOT
|
|
@ -0,0 +1,3 @@
|
|||
#as: --32
|
||||
#ld: -shared -melf_i386
|
||||
#error: direct GOT relocation R_386_GOT32X against `foo' without base register can not be used when making a shared object
|
|
@ -0,0 +1,9 @@
|
|||
.text
|
||||
.globl foo
|
||||
.type foo, @function
|
||||
foo:
|
||||
ret
|
||||
.globl _start
|
||||
.type _start, @function
|
||||
_start:
|
||||
call *foo@GOT
|
|
@ -0,0 +1,3 @@
|
|||
#as: --32
|
||||
#ld: -shared -melf_i386
|
||||
#error: direct GOT relocation R_386_GOT32X against `foo' without base register can not be used when making a shared object
|
|
@ -0,0 +1,8 @@
|
|||
.text
|
||||
.type foo, @function
|
||||
foo:
|
||||
ret
|
||||
.globl _start
|
||||
.type _start, @function
|
||||
_start:
|
||||
call *foo@GOT
|
|
@ -0,0 +1,20 @@
|
|||
#...
|
||||
[a-f0-9]+ <main>:
|
||||
[ ]*[a-f0-9]+: 83 ec 0c sub \$0xc,%esp
|
||||
[ ]*[a-f0-9]+: [ a-f0-9]+ addr16 call [a-f0-9]+ <foo>
|
||||
[ ]*[a-f0-9]+: [ a-f0-9]+ call \*0x[a-f0-9]+
|
||||
[ ]*[a-f0-9]+: [ a-f0-9]+ call \*0x[a-f0-9]+
|
||||
[ ]*[a-f0-9]+: [ a-f0-9]+ lea *0x[a-f0-9]+,%eax
|
||||
[ ]*[a-f0-9]+: ff d0 call \*%eax
|
||||
[ ]*[a-f0-9]+: [ a-f0-9]+ mov *0x[a-f0-9]+,%eax
|
||||
[ ]*[a-f0-9]+: ff d0 call \*%eax
|
||||
[ ]*[a-f0-9]+: [ a-f0-9]+ mov *0x[a-f0-9]+,%eax
|
||||
[ ]*[a-f0-9]+: ff d0 call \*%eax
|
||||
[ ]*[a-f0-9]+: [ a-f0-9]+ lea *0x[a-f0-9]+,%ecx
|
||||
[ ]*[a-f0-9]+: ff d1 call \*%ecx
|
||||
[ ]*[a-f0-9]+: 83 ec 0c sub \$0xc,%esp
|
||||
[ ]*[a-f0-9]+: 6a 00 push \$0x0
|
||||
[ ]*[a-f0-9]+: 6a 00 push \$0x0
|
||||
[ ]*[a-f0-9]+: [ a-f0-9]+ jmp [a-f0-9]+ <myexit>
|
||||
[ ]*[a-f0-9]+: 90 nop
|
||||
#pass
|
|
@ -0,0 +1,7 @@
|
|||
foo
|
||||
bar
|
||||
plt
|
||||
foo
|
||||
bar
|
||||
plt
|
||||
foo
|
|
@ -0,0 +1,21 @@
|
|||
.text
|
||||
.globl main
|
||||
.type main, @function
|
||||
main:
|
||||
subl $12, %esp
|
||||
call *foo@GOT
|
||||
call *bar@GOT
|
||||
call *plt@GOT
|
||||
movl foo@GOT, %eax
|
||||
call *%eax
|
||||
movl bar@GOT, %eax
|
||||
call *%eax
|
||||
movl plt@GOT, %eax
|
||||
call *%eax
|
||||
movl foo@GOT(%ebx), %ecx
|
||||
call *%ecx
|
||||
subl $12, %esp
|
||||
pushl $0
|
||||
pushl $0 # Push a dummy return address onto stack.
|
||||
jmp *myexit@GOT
|
||||
.size main, .-main
|
|
@ -0,0 +1,7 @@
|
|||
#include <stdio.h>
|
||||
|
||||
void
|
||||
foo (void)
|
||||
{
|
||||
printf ("%s\n", __FUNCTION__);
|
||||
}
|
|
@ -0,0 +1,7 @@
|
|||
#include <stdlib.h>
|
||||
|
||||
void
|
||||
myexit (int status)
|
||||
{
|
||||
exit (status);
|
||||
}
|
|
@ -0,0 +1,54 @@
|
|||
.globl bar
|
||||
.type bar, @function
|
||||
bar:
|
||||
pushl %ebx
|
||||
call __x86.get_pc_thunk.cx
|
||||
addl $_GLOBAL_OFFSET_TABLE_, %ecx
|
||||
subl $24, %esp
|
||||
leal __FUNCTION__.1862@GOTOFF(%ecx), %eax
|
||||
movl %eax, (%esp)
|
||||
call *puts@GOT(%ecx)
|
||||
addl $24, %esp
|
||||
popl %ebx
|
||||
ret
|
||||
.size bar, .-bar
|
||||
|
||||
.globl plt
|
||||
.type plt, @function
|
||||
plt:
|
||||
pushl %esi
|
||||
pushl %ebx
|
||||
call __x86.get_pc_thunk.bx
|
||||
1:
|
||||
addl $_GLOBAL_OFFSET_TABLE_, %ebx
|
||||
subl $20, %esp
|
||||
leal __FUNCTION__.1866@GOTOFF(%ebx), %esi
|
||||
movl %esi, (%esp)
|
||||
call *puts@GOT(%ebx)
|
||||
addl $20, %esp
|
||||
popl %ebx
|
||||
popl %esi
|
||||
ret
|
||||
.section .rodata
|
||||
.type __FUNCTION__.1866, @object
|
||||
.size __FUNCTION__.1866, 4
|
||||
__FUNCTION__.1866:
|
||||
.string "plt"
|
||||
.type __FUNCTION__.1862, @object
|
||||
.size __FUNCTION__.1862, 4
|
||||
__FUNCTION__.1862:
|
||||
.string "bar"
|
||||
.section .text.__x86.get_pc_thunk.bx,"axG",@progbits,__x86.get_pc_thunk.bx,comdat
|
||||
.globl __x86.get_pc_thunk.bx
|
||||
.hidden __x86.get_pc_thunk.bx
|
||||
.type __x86.get_pc_thunk.bx, @function
|
||||
__x86.get_pc_thunk.bx:
|
||||
movl (%esp), %ebx
|
||||
ret
|
||||
.section .text.__x86.get_pc_thunk.cx,"axG",@progbits,__x86.get_pc_thunk.cx,comdat
|
||||
.globl __x86.get_pc_thunk.cx
|
||||
.hidden __x86.get_pc_thunk.cx
|
||||
.type __x86.get_pc_thunk.cx, @function
|
||||
__x86.get_pc_thunk.cx:
|
||||
movl (%esp), %ecx
|
||||
ret
|
|
@ -293,6 +293,19 @@ run_dump_test "lea1e"
|
|||
run_dump_test "lea1f"
|
||||
run_dump_test "mov1a"
|
||||
run_dump_test "mov1b"
|
||||
run_dump_test "branch1"
|
||||
run_dump_test "call1"
|
||||
run_dump_test "call2"
|
||||
run_dump_test "jmp1"
|
||||
run_dump_test "jmp2"
|
||||
run_dump_test "load1"
|
||||
run_dump_test "load2"
|
||||
run_dump_test "load3"
|
||||
run_dump_test "load4a"
|
||||
run_dump_test "load4b"
|
||||
run_dump_test "load5a"
|
||||
run_dump_test "load5b"
|
||||
run_dump_test "load6"
|
||||
|
||||
if { !([istarget "i?86-*-linux*"]
|
||||
|| [istarget "i?86-*-gnu*"]
|
||||
|
@ -498,6 +511,22 @@ if { [isnative]
|
|||
"" \
|
||||
"pr19031.so" \
|
||||
] \
|
||||
[list \
|
||||
"Build got1d.so" \
|
||||
"-shared" \
|
||||
"" \
|
||||
{ got1d.S } \
|
||||
"" \
|
||||
"got1d.so" \
|
||||
] \
|
||||
[list \
|
||||
"Build gotpc1" \
|
||||
"tmpdir/got1d.so" \
|
||||
"" \
|
||||
{ got1a.S got1b.c got1c.c } \
|
||||
{{objdump {-dw} got1.dd}} \
|
||||
"got1" \
|
||||
] \
|
||||
]
|
||||
|
||||
run_ld_link_exec_tests [] [list \
|
||||
|
@ -568,6 +597,14 @@ if { [isnative]
|
|||
"pr19031" \
|
||||
"pr19031.out" \
|
||||
] \
|
||||
[list \
|
||||
"Run got1" \
|
||||
"tmpdir/got1d.so" \
|
||||
"" \
|
||||
{ got1a.S got1b.c got1c.c } \
|
||||
"got1" \
|
||||
"got1.out" \
|
||||
] \
|
||||
]
|
||||
}
|
||||
|
||||
|
|
|
@ -0,0 +1,3 @@
|
|||
#as: --32
|
||||
#ld: -shared -melf_i386
|
||||
#error: direct GOT relocation R_386_GOT32X against `foo' without base register can not be used when making a shared object
|
|
@ -0,0 +1,9 @@
|
|||
.text
|
||||
.globl foo
|
||||
.type foo, @function
|
||||
foo:
|
||||
ret
|
||||
.globl _start
|
||||
.type _start, @function
|
||||
_start:
|
||||
jmp *foo@GOT
|
|
@ -0,0 +1,3 @@
|
|||
#as: --32
|
||||
#ld: -shared -melf_i386
|
||||
#error: direct GOT relocation R_386_GOT32X against `foo' without base register can not be used when making a shared object
|
|
@ -0,0 +1,8 @@
|
|||
.text
|
||||
.type foo, @function
|
||||
foo:
|
||||
ret
|
||||
.globl _start
|
||||
.type _start, @function
|
||||
_start:
|
||||
jmp *foo@GOT
|
|
@ -9,6 +9,6 @@
|
|||
Disassembly of section .text:
|
||||
|
||||
#...
|
||||
[ ]*[a-f0-9]+: 8d 81 ([0-9a-f]{2} ){4} * lea -0x[a-f0-9]+\(%ecx\),%eax
|
||||
[ ]*[a-f0-9]+: 8d 81 ([0-9a-f]{2} ){4} * lea 0x[a-f0-9]+\(%ecx\),%eax
|
||||
[ ]*[a-f0-9]+: 8d 05 ([0-9a-f]{2} ){4} * lea 0x[a-f0-9]+,%eax
|
||||
[ ]*[a-f0-9]+: 8d 05 ([0-9a-f]{2} ){4} * lea 0x[a-f0-9]+,%eax
|
||||
#pass
|
||||
|
|
|
@ -0,0 +1,57 @@
|
|||
#as: --32
|
||||
#ld: -melf_i386
|
||||
#objdump: -dw --sym
|
||||
|
||||
.*: +file format .*
|
||||
|
||||
SYMBOL TABLE:
|
||||
#...
|
||||
0+8049170 l O .data 0+1 bar
|
||||
#...
|
||||
0+8049171 g O .data 0+1 foo
|
||||
#...
|
||||
|
||||
Disassembly of section .text:
|
||||
|
||||
0+8048074 <_start>:
|
||||
[ ]*[a-f0-9]+: 8d 05 70 91 04 08 lea 0x8049170,%eax
|
||||
[ ]*[a-f0-9]+: 81 d0 70 91 04 08 adc \$0x8049170,%eax
|
||||
[ ]*[a-f0-9]+: 81 c3 70 91 04 08 add \$0x8049170,%ebx
|
||||
[ ]*[a-f0-9]+: 81 e1 70 91 04 08 and \$0x8049170,%ecx
|
||||
[ ]*[a-f0-9]+: 81 fa 70 91 04 08 cmp \$0x8049170,%edx
|
||||
[ ]*[a-f0-9]+: 81 cf 70 91 04 08 or \$0x8049170,%edi
|
||||
[ ]*[a-f0-9]+: 81 de 70 91 04 08 sbb \$0x8049170,%esi
|
||||
[ ]*[a-f0-9]+: 81 ed 70 91 04 08 sub \$0x8049170,%ebp
|
||||
[ ]*[a-f0-9]+: 81 f4 70 91 04 08 xor \$0x8049170,%esp
|
||||
[ ]*[a-f0-9]+: f7 c1 70 91 04 08 test \$0x8049170,%ecx
|
||||
[ ]*[a-f0-9]+: 8d 05 70 91 04 08 lea 0x8049170,%eax
|
||||
[ ]*[a-f0-9]+: 81 d0 70 91 04 08 adc \$0x8049170,%eax
|
||||
[ ]*[a-f0-9]+: 81 c3 70 91 04 08 add \$0x8049170,%ebx
|
||||
[ ]*[a-f0-9]+: 81 e1 70 91 04 08 and \$0x8049170,%ecx
|
||||
[ ]*[a-f0-9]+: 81 fa 70 91 04 08 cmp \$0x8049170,%edx
|
||||
[ ]*[a-f0-9]+: 81 cf 70 91 04 08 or \$0x8049170,%edi
|
||||
[ ]*[a-f0-9]+: 81 de 70 91 04 08 sbb \$0x8049170,%esi
|
||||
[ ]*[a-f0-9]+: 81 ed 70 91 04 08 sub \$0x8049170,%ebp
|
||||
[ ]*[a-f0-9]+: 81 f4 70 91 04 08 xor \$0x8049170,%esp
|
||||
[ ]*[a-f0-9]+: f7 c1 70 91 04 08 test \$0x8049170,%ecx
|
||||
[ ]*[a-f0-9]+: 8d 05 71 91 04 08 lea 0x8049171,%eax
|
||||
[ ]*[a-f0-9]+: 81 d0 71 91 04 08 adc \$0x8049171,%eax
|
||||
[ ]*[a-f0-9]+: 81 c3 71 91 04 08 add \$0x8049171,%ebx
|
||||
[ ]*[a-f0-9]+: 81 e1 71 91 04 08 and \$0x8049171,%ecx
|
||||
[ ]*[a-f0-9]+: 81 fa 71 91 04 08 cmp \$0x8049171,%edx
|
||||
[ ]*[a-f0-9]+: 81 cf 71 91 04 08 or \$0x8049171,%edi
|
||||
[ ]*[a-f0-9]+: 81 de 71 91 04 08 sbb \$0x8049171,%esi
|
||||
[ ]*[a-f0-9]+: 81 ed 71 91 04 08 sub \$0x8049171,%ebp
|
||||
[ ]*[a-f0-9]+: 81 f4 71 91 04 08 xor \$0x8049171,%esp
|
||||
[ ]*[a-f0-9]+: f7 c1 71 91 04 08 test \$0x8049171,%ecx
|
||||
[ ]*[a-f0-9]+: 8d 05 71 91 04 08 lea 0x8049171,%eax
|
||||
[ ]*[a-f0-9]+: 81 d0 71 91 04 08 adc \$0x8049171,%eax
|
||||
[ ]*[a-f0-9]+: 81 c3 71 91 04 08 add \$0x8049171,%ebx
|
||||
[ ]*[a-f0-9]+: 81 e1 71 91 04 08 and \$0x8049171,%ecx
|
||||
[ ]*[a-f0-9]+: 81 fa 71 91 04 08 cmp \$0x8049171,%edx
|
||||
[ ]*[a-f0-9]+: 81 cf 71 91 04 08 or \$0x8049171,%edi
|
||||
[ ]*[a-f0-9]+: 81 de 71 91 04 08 sbb \$0x8049171,%esi
|
||||
[ ]*[a-f0-9]+: 81 ed 71 91 04 08 sub \$0x8049171,%ebp
|
||||
[ ]*[a-f0-9]+: 81 f4 71 91 04 08 xor \$0x8049171,%esp
|
||||
[ ]*[a-f0-9]+: f7 c1 71 91 04 08 test \$0x8049171,%ecx
|
||||
#pass
|
|
@ -0,0 +1,55 @@
|
|||
.data
|
||||
.type bar, @object
|
||||
bar:
|
||||
.byte 1
|
||||
.size bar, .-bar
|
||||
.globl foo
|
||||
.type foo, @object
|
||||
foo:
|
||||
.byte 1
|
||||
.size foo, .-foo
|
||||
.text
|
||||
.globl _start
|
||||
.type _start, @function
|
||||
_start:
|
||||
movl bar@GOT(%ecx), %eax
|
||||
adcl bar@GOT(%ecx), %eax
|
||||
addl bar@GOT(%ecx), %ebx
|
||||
andl bar@GOT(%ecx), %ecx
|
||||
cmpl bar@GOT(%ecx), %edx
|
||||
orl bar@GOT(%ecx), %edi
|
||||
sbbl bar@GOT(%ecx), %esi
|
||||
subl bar@GOT(%ecx), %ebp
|
||||
xorl bar@GOT(%ecx), %esp
|
||||
testl %ecx, bar@GOT(%ecx)
|
||||
movl bar@GOT, %eax
|
||||
adcl bar@GOT, %eax
|
||||
addl bar@GOT, %ebx
|
||||
andl bar@GOT, %ecx
|
||||
cmpl bar@GOT, %edx
|
||||
orl bar@GOT, %edi
|
||||
sbbl bar@GOT, %esi
|
||||
subl bar@GOT, %ebp
|
||||
xorl bar@GOT, %esp
|
||||
testl %ecx, bar@GOT
|
||||
movl foo@GOT(%ecx), %eax
|
||||
adcl foo@GOT(%ecx), %eax
|
||||
addl foo@GOT(%ecx), %ebx
|
||||
andl foo@GOT(%ecx), %ecx
|
||||
cmpl foo@GOT(%ecx), %edx
|
||||
orl foo@GOT(%ecx), %edi
|
||||
sbbl foo@GOT(%ecx), %esi
|
||||
subl foo@GOT(%ecx), %ebp
|
||||
xorl foo@GOT(%ecx), %esp
|
||||
testl %ecx, foo@GOT(%ecx)
|
||||
movl foo@GOT, %eax
|
||||
adcl foo@GOT, %eax
|
||||
addl foo@GOT, %ebx
|
||||
andl foo@GOT, %ecx
|
||||
cmpl foo@GOT, %edx
|
||||
orl foo@GOT, %edi
|
||||
sbbl foo@GOT, %esi
|
||||
subl foo@GOT, %ebp
|
||||
xorl foo@GOT, %esp
|
||||
testl %ecx, foo@GOT
|
||||
.size _start, .-_start
|
|
@ -0,0 +1,3 @@
|
|||
#as: --32
|
||||
#ld: -melf_i386 -shared
|
||||
#error: direct GOT relocation R_386_GOT32X against `foo' without base register can not be used when making a shared object
|
|
@ -0,0 +1,8 @@
|
|||
.data
|
||||
.type foo, @object
|
||||
foo:
|
||||
.text
|
||||
.globl _start
|
||||
.type _start, @function
|
||||
_start:
|
||||
addl foo@GOT, %ebx
|
|
@ -0,0 +1,3 @@
|
|||
#as: --32
|
||||
#ld: -melf_i386 -shared
|
||||
#error: direct GOT relocation R_386_GOT32X against `foo' without base register can not be used when making a shared object
|
|
@ -0,0 +1,9 @@
|
|||
.data
|
||||
.globl foo
|
||||
.type foo, @object
|
||||
foo:
|
||||
.text
|
||||
.globl _start
|
||||
.type _start, @function
|
||||
_start:
|
||||
addl foo@GOT, %ebx
|
|
@ -0,0 +1,9 @@
|
|||
.text
|
||||
.globl foo
|
||||
.type foo, @function
|
||||
foo:
|
||||
ret
|
||||
.globl _start
|
||||
.type _start, @function
|
||||
_start:
|
||||
movl foo@GOT, %eax
|
|
@ -0,0 +1,4 @@
|
|||
#source: load4.s
|
||||
#as: --32
|
||||
#ld: -Bsymbolic -shared -melf_i386
|
||||
#error: direct GOT relocation R_386_GOT32X against `foo' without base register can not be used when making a shared object
|
|
@ -0,0 +1,13 @@
|
|||
#source: load4.s
|
||||
#as: --32
|
||||
#ld: -melf_i386
|
||||
#objdump: -dw
|
||||
|
||||
.*: +file format .*
|
||||
|
||||
|
||||
Disassembly of section .text:
|
||||
|
||||
#...
|
||||
[ ]*[a-f0-9]+: 8d 05 ([0-9a-f]{2} ){4} * lea 0x[a-f0-9]+,%eax
|
||||
#pass
|
|
@ -0,0 +1,8 @@
|
|||
.text
|
||||
.type foo, @function
|
||||
foo:
|
||||
ret
|
||||
.globl _start
|
||||
.type _start, @function
|
||||
_start:
|
||||
movl foo@GOT, %eax
|
|
@ -0,0 +1,4 @@
|
|||
#source: load5.s
|
||||
#as: --32
|
||||
#ld: -Bsymbolic -shared -melf_i386
|
||||
#error: direct GOT relocation R_386_GOT32X against `foo' without base register can not be used when making a shared object
|
|
@ -0,0 +1,13 @@
|
|||
#source: load5.s
|
||||
#as: --32
|
||||
#ld: -melf_i386
|
||||
#objdump: -dw
|
||||
|
||||
.*: +file format .*
|
||||
|
||||
|
||||
Disassembly of section .text:
|
||||
|
||||
#...
|
||||
[ ]*[a-f0-9]+: 8d 05 ([0-9a-f]{2} ){4} * lea 0x[a-f0-9]+,%eax
|
||||
#pass
|
|
@ -0,0 +1,28 @@
|
|||
#as: --32
|
||||
#ld: -shared -melf_i386
|
||||
#objdump: -dw
|
||||
|
||||
.*: +file format .*
|
||||
|
||||
Disassembly of section .text:
|
||||
|
||||
[a-f0-9]+ <_start>:
|
||||
[ ]*[a-f0-9]+: 13 81 f8 ff ff ff adc -0x8\(%ecx\),%eax
|
||||
[ ]*[a-f0-9]+: 03 99 f8 ff ff ff add -0x8\(%ecx\),%ebx
|
||||
[ ]*[a-f0-9]+: 23 89 f8 ff ff ff and -0x8\(%ecx\),%ecx
|
||||
[ ]*[a-f0-9]+: 3b 91 f8 ff ff ff cmp -0x8\(%ecx\),%edx
|
||||
[ ]*[a-f0-9]+: 0b b9 f8 ff ff ff or -0x8\(%ecx\),%edi
|
||||
[ ]*[a-f0-9]+: 1b b1 f8 ff ff ff sbb -0x8\(%ecx\),%esi
|
||||
[ ]*[a-f0-9]+: 2b a9 f8 ff ff ff sub -0x8\(%ecx\),%ebp
|
||||
[ ]*[a-f0-9]+: 33 a1 f8 ff ff ff xor -0x8\(%ecx\),%esp
|
||||
[ ]*[a-f0-9]+: 85 89 f8 ff ff ff test %ecx,-0x8\(%ecx\)
|
||||
[ ]*[a-f0-9]+: 13 81 fc ff ff ff adc -0x4\(%ecx\),%eax
|
||||
[ ]*[a-f0-9]+: 03 99 fc ff ff ff add -0x4\(%ecx\),%ebx
|
||||
[ ]*[a-f0-9]+: 23 89 fc ff ff ff and -0x4\(%ecx\),%ecx
|
||||
[ ]*[a-f0-9]+: 3b 91 fc ff ff ff cmp -0x4\(%ecx\),%edx
|
||||
[ ]*[a-f0-9]+: 0b b9 fc ff ff ff or -0x4\(%ecx\),%edi
|
||||
[ ]*[a-f0-9]+: 1b b1 fc ff ff ff sbb -0x4\(%ecx\),%esi
|
||||
[ ]*[a-f0-9]+: 2b a9 fc ff ff ff sub -0x4\(%ecx\),%ebp
|
||||
[ ]*[a-f0-9]+: 33 a1 fc ff ff ff xor -0x4\(%ecx\),%esp
|
||||
[ ]*[a-f0-9]+: 85 89 fc ff ff ff test %ecx,-0x4\(%ecx\)
|
||||
#pass
|
|
@ -0,0 +1,33 @@
|
|||
.data
|
||||
.type bar, @object
|
||||
bar:
|
||||
.byte 1
|
||||
.size bar, .-bar
|
||||
.globl foo
|
||||
.type foo, @object
|
||||
foo:
|
||||
.byte 1
|
||||
.size foo, .-foo
|
||||
.text
|
||||
.globl _start
|
||||
.type _start, @function
|
||||
_start:
|
||||
adcl bar@GOT(%ecx), %eax
|
||||
addl bar@GOT(%ecx), %ebx
|
||||
andl bar@GOT(%ecx), %ecx
|
||||
cmpl bar@GOT(%ecx), %edx
|
||||
orl bar@GOT(%ecx), %edi
|
||||
sbbl bar@GOT(%ecx), %esi
|
||||
subl bar@GOT(%ecx), %ebp
|
||||
xorl bar@GOT(%ecx), %esp
|
||||
testl %ecx, bar@GOT(%ecx)
|
||||
adcl foo@GOT(%ecx), %eax
|
||||
addl foo@GOT(%ecx), %ebx
|
||||
andl foo@GOT(%ecx), %ecx
|
||||
cmpl foo@GOT(%ecx), %edx
|
||||
orl foo@GOT(%ecx), %edi
|
||||
sbbl foo@GOT(%ecx), %esi
|
||||
subl foo@GOT(%ecx), %ebp
|
||||
xorl foo@GOT(%ecx), %esp
|
||||
testl %ecx, foo@GOT(%ecx)
|
||||
.size _start, .-_start
|
|
@ -1,3 +1,3 @@
|
|||
#...
|
||||
[0-9a-f ]+R_386_GOT32 +0+ +bar
|
||||
[0-9a-f ]+R_386_GOT32X +0+ +bar
|
||||
#pass
|
||||
|
|
|
@ -1,5 +1,5 @@
|
|||
#...
|
||||
[0-9a-f ]+R_386_GOT32 +0+ +bar
|
||||
[0-9a-f ]+R_386_GOT32X +0+ +bar
|
||||
#...
|
||||
[0-9a-f ]+R_386_PLT32 +0+ +bar
|
||||
#pass
|
||||
|
|
|
@ -1,5 +1,5 @@
|
|||
#...
|
||||
[0-9a-f ]+R_386_GOT32 +0+ +foo
|
||||
[0-9a-f ]+R_386_GOT32X +0+ +foo
|
||||
#...
|
||||
[0-9a-f ]+R_386_PLT32 +0+ +foo
|
||||
#pass
|
||||
|
|
Loading…
Reference in New Issue