binutils-gdb/ld/testsuite/ld-ifunc/ifunc-22-i386.d

26 lines
724 B
D
Raw Normal View History

#ld: -m elf_i386 -z noseparate-code
#as: --32 -mrelax-relocations=yes
#objdump: -dw
#target: x86_64-*-* i?86-*-*
Enable ld-ifunc tests for more targets Also fix some ix86 fails. * testsuite/ld-ifunc/ifunc.exp: Enable for more targets, specifying targets that don't support ifunc rather than ones that do. (contains_irelative_reloc): Match R_PARISC_IPLT. * testsuite/ld-ifunc/lib.c: Don't use .set in asm. * testsuite/ld-ifunc/ifunc-23-x86.s, * testsuite/ld-ifunc/ifunc-24-x86.s, * testsuite/ld-ifunc/ifunc-25-x86.s, * testsuite/ld-ifunc/ifunc-4-local-x86.s, * testsuite/ld-ifunc/ifunc-4-x86.s: Define _main. * testsuite/ld-ifunc/ifunc-10-i386.d, * testsuite/ld-ifunc/ifunc-11-i386.d, * testsuite/ld-ifunc/ifunc-12-i386.d, * testsuite/ld-ifunc/ifunc-13-i386.d, * testsuite/ld-ifunc/ifunc-14a-i386.d, * testsuite/ld-ifunc/ifunc-14b-i386.d, * testsuite/ld-ifunc/ifunc-14c-i386.d, * testsuite/ld-ifunc/ifunc-14d-i386.d, * testsuite/ld-ifunc/ifunc-14e-i386.d, * testsuite/ld-ifunc/ifunc-14f-i386.d, * testsuite/ld-ifunc/ifunc-15-i386.d, * testsuite/ld-ifunc/ifunc-16-i386-now.d, * testsuite/ld-ifunc/ifunc-16-i386.d, * testsuite/ld-ifunc/ifunc-17a-i386.d, * testsuite/ld-ifunc/ifunc-17b-i386.d, * testsuite/ld-ifunc/ifunc-18a-i386.d, * testsuite/ld-ifunc/ifunc-18b-i386.d, * testsuite/ld-ifunc/ifunc-19a-i386.d, * testsuite/ld-ifunc/ifunc-19b-i386.d, * testsuite/ld-ifunc/ifunc-2-i386-now.d, * testsuite/ld-ifunc/ifunc-2-i386.d, * testsuite/ld-ifunc/ifunc-2-local-i386-now.d, * testsuite/ld-ifunc/ifunc-2-local-i386.d, * testsuite/ld-ifunc/ifunc-20-i386.d, * testsuite/ld-ifunc/ifunc-21-i386.d, * testsuite/ld-ifunc/ifunc-22-i386.d, * testsuite/ld-ifunc/ifunc-26.d, * testsuite/ld-ifunc/ifunc-5a-i386.d, * testsuite/ld-ifunc/ifunc-5a-local-i386.d, * testsuite/ld-ifunc/ifunc-5b-i386.d, * testsuite/ld-ifunc/ifunc-5b-local-i386.d, * testsuite/ld-ifunc/ifunc-5r-local-i386.d, * testsuite/ld-ifunc/ifunc-6a-i386.d, * testsuite/ld-ifunc/ifunc-6b-i386.d, * testsuite/ld-ifunc/ifunc-7a-i386.d, * testsuite/ld-ifunc/ifunc-7b-i386.d, * testsuite/ld-ifunc/ifunc-8-i386.d, * testsuite/ld-ifunc/ifunc-9-i386.d, * testsuite/ld-ifunc/pr17154-i386-now.d, * testsuite/ld-ifunc/pr17154-i386.d: xfail lynxos, nto, and solaris.
2020-02-06 08:53:43 +08:00
#notarget: *-*-lynxos *-*-nacl* *-*-nto* *-*-solaris2*
.*: +file format .*
Optimize x86 GOT32X/GOTPCRELX relocations R_386_GOT32X, R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX relocations retrieve the symbol address via its GOT slot. If the symbol address is known at the link-time, we can use it directly by changing instruction encoding. Indirect branch can only be converted to PC relative direct branch. MOV can be changed to LEA or encoded differently with signed address. The subset of binary operations can be encoded only with signed address. If undefined weak symbol is resolved to zero link-time, we can use it as address. Zero addresss can't used with PC relative direct branch when PIC is true since the current PC is unknown. In 64-bit, 32-bit relocation for PC relatiave direct branch to zero may also overflow. If this optimization causes relocation overflow, --no-relax can be used to work around it. bfd/ PR ld/19609 * elf32-i386.c (elf_i386_convert_load): Convert to R_386_32 for load with locally bound symbols if PIC is false or there is no base register. Optimize branch to 0 if PIC is false. (elf_i386_relocate_section): Don't generate dynamic relocations against undefined weak symbols if PIC is false. * elf64-x86-64.c (elf_x86_64_convert_load): Disable optimization if we can't estimate relocation overflow with --no-relax. Convert to R_X86_64_32S/R_X86_64_32 for load with locally bound symbols if PIC is false. Optimize branch to 0 if PIC is false. (elf_x86_64_relocate_section): Don't generate dynamic relocations against undefined weak symbols if PIC is false. ld/ PR ld/19609 * testsuite/ld-i386/got1.dd: Updated. * testsuite/ld-i386/lea1c.d: Likewise. * testsuite/ld-i386/load1-nacl.d: Likewise. * testsuite/ld-i386/load1.d: Likewise. * testsuite/ld-i386/load4b.d: Likewise. * testsuite/ld-i386/load5b.d: Likewise. * testsuite/ld-i386/mov1b.d: Likewise. * testsuite/ld-x86-64/mov1b.d: Likewise. * testsuite/ld-x86-64/mov1d.d: Likewise. * testsuite/ld-ifunc/ifunc-21-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-21-x86-64.d: Likewise. * testsuite/ld-ifunc/ifunc-22-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-22-x86-64.d: Likewise. * testsuite/ld-x86-64/gotpcrel1.dd: Likewise. * testsuite/ld-x86-64/lea1a.d: Likewise. * testsuite/ld-x86-64/lea1b.d: Likewise. * testsuite/ld-x86-64/lea1c.d: Likewise. * testsuite/ld-x86-64/lea1d.d: Likewise. * testsuite/ld-x86-64/lea1e.d: Likewise. * testsuite/ld-x86-64/lea1f.d: Likewise. * testsuite/ld-x86-64/mov1b.d: Likewise. * testsuite/ld-x86-64/mov1d.d: Likewise. * testsuite/ld-x86-64/pr13082-3b.d: Likewise. * testsuite/ld-x86-64/pr13082-4b.d: Likewise. * testsuite/ld-x86-64/lea1.s: Add tests for 32-bit registers. * testsuite/ld-i386/pr19609-1.s: New file. * testsuite/ld-i386/pr19609-1a.d: Likewise. * testsuite/ld-i386/pr19609-1b.d: Likewise. * testsuite/ld-i386/pr19609-1c.d: Likewise. * testsuite/ld-i386/pr19609-1d.d: Likewise. * testsuite/ld-i386/pr19609-1e.d: Likewise. * testsuite/ld-i386/pr19609-1f.d: Likewise. * testsuite/ld-i386/pr19609-1g.d: Likewise. * testsuite/ld-i386/pr19609-1h.d: Likewise. * testsuite/ld-i386/pr19609-1i.d: Likewise. * testsuite/ld-i386/pr19609-2.s: Likewise. * testsuite/ld-i386/pr19609-2a.d: Likewise. * testsuite/ld-i386/pr19609-2b.d: Likewise. * testsuite/ld-i386/pr19609-2c.d: Likewise. * testsuite/ld-i386/undefweak.s: Likewise. * testsuite/ld-i386/undefweaka.d: Likewise. * testsuite/ld-i386/undefweakb.d: Likewise. * testsuite/ld-x86-64/pr13082-3c.d: Likewise. * testsuite/ld-x86-64/pr13082-3d.d: Likewise. * testsuite/ld-x86-64/pr19609-1.s: Likewise. * testsuite/ld-x86-64/pr19609-1a.d: Likewise. * testsuite/ld-x86-64/pr19609-1b.d: Likewise. * testsuite/ld-x86-64/pr19609-1c.d: Likewise. * testsuite/ld-x86-64/pr19609-1d.d: Likewise. * testsuite/ld-x86-64/pr19609-1e.d: Likewise. * testsuite/ld-x86-64/pr19609-1f.d: Likewise. * testsuite/ld-x86-64/pr19609-1g.d: Likewise. * testsuite/ld-x86-64/pr19609-1h.d: Likewise. * testsuite/ld-x86-64/pr19609-1i.d: Likewise. * testsuite/ld-x86-64/pr19609-1j.d: Likewise. * testsuite/ld-x86-64/pr19609-1k.d: Likewise. * testsuite/ld-x86-64/pr19609-1l.d: Likewise. * testsuite/ld-x86-64/pr19609-1m.d: Likewise. * testsuite/ld-x86-64/pr19609-2.s: Likewise. * testsuite/ld-x86-64/pr19609-2a.d: Likewise. * testsuite/ld-x86-64/pr19609-2b.d: Likewise. * testsuite/ld-x86-64/pr19609-2c.d: Likewise. * testsuite/ld-x86-64/pr19609-2d.d: Likewise. * testsuite/ld-x86-64/pr19609-3.s: Likewise. * testsuite/ld-x86-64/pr19609-3a.d: Likewise. * testsuite/ld-x86-64/pr19609-3b.d: Likewise. * testsuite/ld-x86-64/pr19609-4.s: Likewise. * testsuite/ld-x86-64/pr19609-4a.d: Likewise. * testsuite/ld-x86-64/pr19609-4b.d: Likewise. * testsuite/ld-x86-64/pr19609-4c.d: Likewise. * testsuite/ld-x86-64/pr19609-4d.d: Likewise. * testsuite/ld-x86-64/pr19609-4e.d: Likewise. * testsuite/ld-x86-64/pr19609-5.s: Likewise. * testsuite/ld-x86-64/pr19609-5a.d: Likewise. * testsuite/ld-x86-64/pr19609-5b.d: Likewise. * testsuite/ld-x86-64/pr19609-5c.d: Likewise. * testsuite/ld-x86-64/pr19609-5d.d: Likewise. * testsuite/ld-x86-64/pr19609-5e.d: Likewise. * testsuite/ld-x86-64/pr19609-6.s: Likewise. * testsuite/ld-x86-64/pr19609-6a.d: Likewise. * testsuite/ld-x86-64/pr19609-6b.d: Likewise. * testsuite/ld-x86-64/pr19609-6c.d: Likewise. * testsuite/ld-x86-64/pr19609-6d.d: Likewise. * testsuite/ld-x86-64/pr19609-7.s: Likewise. * testsuite/ld-x86-64/pr19609-7a.d: Likewise. * testsuite/ld-x86-64/pr19609-7b.d: Likewise. * testsuite/ld-x86-64/pr19609-7c.d: Likewise. * testsuite/ld-x86-64/pr19609-7d.d: Likewise. * testsuite/ld-i386/i386.exp: Run undefweak tests and tests for PR ld/19609. * testsuite/ld-x86-64/x86-64.exp: Run pr13082-3c, pr13082-3d and tests for PR ld/19609.
2016-02-27 01:38:08 +08:00
Don't generate PLT for IFUNC GOT/pointer reference If a backend supports it, PLT entry isn't needed when all references to a STT_GNU_IFUNC symbols are done via GOT or static function pointers. For GOT entries, We generate dynamic R_*_GLOB_DAT relocations for preemptable symbols and R_*_IRELATIVE relocations for non-preemptable symbols to update them with real function address. For static pointer pointers, we generate dynamic pointer relocations and store them in: 1. .rel[a].ifunc section in PIC object. 2. .rel[a].got section in dynamic executable. 3. .rel[a].iplt section in static executable. We don't allocate GOT entry if it isn't used. bfd/ PR ld/20253 * elf-bfd.h (_bfd_elf_allocate_ifunc_dyn_relocs): Add an bfd_boolean argument. * elf-ifunc.c (_bfd_elf_create_ifunc_sections): Replace "shared object" with "PIC object" in comments. (_bfd_elf_allocate_ifunc_dyn_relocs): Updated. Replace "shared object" with "PIC object" in comments. Avoid PLT if requested. Generate dynamic relocations for non-GOT references. Make room for the special first entry in PLT and allocate PLT entry only for PLT and PC-relative references. Store dynamic GOT relocations in .rel[a].iplt section for static executables. If PLT isn't used, always use GOT for symbol value. Don't allocate GOT entry if it isn't used. * elf32-i386.c (elf_i386_check_relocs): Increment PLT reference count only in the code section. Allocate dynamic pointer relocation against STT_GNU_IFUNC symbol in the non-code section. (elf_i386_adjust_dynamic_symbol): Increment PLT reference count only for PC-relative references. (elf_i386_allocate_dynrelocs): Pass TRUE to _bfd_elf_allocate_ifunc_dyn_relocs. (elf_i386_relocate_section): Allow R_386_GOT32/R_386_GOT32X relocations against STT_GNU_IFUNC symbols without PLT. Generate dynamic pointer relocation against STT_GNU_IFUNC symbol in the non-code section and store it in the proper REL section. Don't allow non-pointer relocation against STT_GNU_IFUNC symbol without PLT. (elf_i386_finish_dynamic_symbol): Generate dynamic R_386_IRELATIVE and R_386_GLOB_DAT GOT relocations against STT_GNU_IFUNC symbols without PLT. (elf_i386_finish_dynamic_sections): Don't handle local STT_GNU_IFUNC symbols here. (elf_i386_output_arch_local_syms): Handle local STT_GNU_IFUNC symbols here. (elf_backend_output_arch_local_syms): New. * elf32-x86-64.c (elf_i386_check_relocs): Increment PLT reference count only in the code section. Allocate dynamic pointer relocation against STT_GNU_IFUNC symbol in the non-code section. (elf_x86_64_adjust_dynamic_symbol): Increment PLT reference count only for PC-relative references. (elf_x86_64_allocate_dynrelocs): Pass TRUE to _bfd_elf_allocate_ifunc_dyn_relocs. (elf_x86_64_relocate_section): Allow R_X86_64_GOTPCREL, R_X86_64_GOTPCRELX, R_X86_64_REX_GOTPCRELX and R_X86_64_GOTPCREL64 relocations against STT_GNU_IFUNC symbols without PLT. Generate dynamic pointer relocation against STT_GNU_IFUNC symbol in the non-code section and store it in the proper RELA section. Don't allow non-pointer relocation against STT_GNU_IFUNC symbol without PLT. (elf_x86_64_finish_dynamic_symbol): Generate dynamic R_X86_64_IRELATIVE and R_X86_64_GLOB_DAT GOT relocations against STT_GNU_IFUNC symbols without PLT. (elf_x86_64_finish_dynamic_sections): Don't handle local STT_GNU_IFUNC symbols here. (elf_x86_64_output_arch_local_syms): Handle local STT_GNU_IFUNC symbols here. (elf_backend_output_arch_local_syms): New. * elfnn-aarch64.c (elfNN_aarch64_allocate_ifunc_dynrelocs): Pass FALSE to _bfd_elf_allocate_ifunc_dyn_relocs. ld/ PR ld/20253 * testsuite/ld-i386/i386.exp: Run PR ld/20253 tests. * testsuite/ld-i386/no-plt.exp: Likewise. * testsuite/ld-x86-64/no-plt.exp: Likewise. * testsuite/ld-i386/pr13302.d: Remove .rel.plt section. * testsuite/ld-ifunc/ifunc-13-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-13-x86-64.d: Likewise. * testsuite/ld-ifunc/ifunc-15-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-15-x86-64.d: Likewise. * testsuite/ld-x86-64/pr13082-5a.d: Likewise. * testsuite/ld-x86-64/pr13082-5b.d: Likewise. * testsuite/ld-x86-64/pr13082-6a.d: Likewise. * testsuite/ld-x86-64/pr13082-6b.d: Likewise. * testsuite/ld-i386/pr20244-2a.d: Remove .plt section. * testsuite/ld-ifunc/ifunc-21-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-21-x86-64.d: Likewise. * testsuite/ld-ifunc/ifunc-22-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-22-x86-64.d: Likewise. * testsuite/ld-i386/pr20244-2b.d: Updated. * testsuite/ld-i386/pr20244-2c.d: Likewise. * testsuite/ld-ifunc/ifunc-18a-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-18a-x86-64.d: Likewise. * testsuite/ld-ifunc/ifunc-18b-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-18b-x86-64.d: Likewise. * testsuite/ld-i386/pr20253-1a.c: New file. * testsuite/ld-i386/pr20253-1b.S: Likewise. * testsuite/ld-i386/pr20253-1c.S: Likewise. * testsuite/ld-i386/pr20253-1d.S: Likewise. * testsuite/ld-i386/pr20253-2a.c: Likewise. * testsuite/ld-i386/pr20253-2b.S: Likewise. * testsuite/ld-i386/pr20253-2c.S: Likewise. * testsuite/ld-i386/pr20253-2d.S: Likewise. * testsuite/ld-i386/pr20253-3.d: Likewise. * testsuite/ld-i386/pr20253-3.s: Likewise. * testsuite/ld-i386/pr20253-4.s: Likewise. * testsuite/ld-i386/pr20253-4a.d: Likewise. * testsuite/ld-i386/pr20253-4b.d: Likewise. * testsuite/ld-i386/pr20253-4c.d: Likewise. * testsuite/ld-i386/pr20253-5.d: Likewise. * testsuite/ld-i386/pr20253-5.s: Likewise. * testsuite/ld-ifunc/ifunc-23-x86.s: Likewise. * testsuite/ld-ifunc/ifunc-23a-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-23b-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-23c-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-24-x86.s: Likewise. * testsuite/ld-ifunc/ifunc-24a-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-24b-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-24c-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-25-x86.s: Likewise. * testsuite/ld-ifunc/ifunc-25a-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-25b-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-25c-x86.d: Likewise. * testsuite/ld-x86-64/pr20253-1.s: Likewise. * testsuite/ld-x86-64/pr20253-1a.d: Likewise. * testsuite/ld-x86-64/pr20253-1b.d: Likewise. * testsuite/ld-x86-64/pr20253-1c.d: Likewise. * testsuite/ld-x86-64/pr20253-1d.d: Likewise. * testsuite/ld-x86-64/pr20253-1e.d: Likewise. * testsuite/ld-x86-64/pr20253-1f.d: Likewise. * testsuite/ld-x86-64/pr20253-1g.d: Likewise. * testsuite/ld-x86-64/pr20253-1h.d: Likewise. * testsuite/ld-x86-64/pr20253-1i.d: Likewise. * testsuite/ld-x86-64/pr20253-1j.d: Likewise. * testsuite/ld-x86-64/pr20253-1k.d: Likewise. * testsuite/ld-x86-64/pr20253-1l.d: Likewise. * testsuite/ld-x86-64/pr20253-2a.c: Likewise. * testsuite/ld-x86-64/pr20253-2b.S: Likewise. * testsuite/ld-x86-64/pr20253-2c.S: Likewise. * testsuite/ld-x86-64/pr20253-2d.S: Likewise. * testsuite/ld-x86-64/pr20253-3.d: Likewise. * testsuite/ld-x86-64/pr20253-3.s: Likewise. * testsuite/ld-x86-64/pr20253-4.s: Likewise. * testsuite/ld-x86-64/pr20253-4a.d: Likewise. * testsuite/ld-x86-64/pr20253-4b.d: Likewise. * testsuite/ld-x86-64/pr20253-4c.d: Likewise. * testsuite/ld-x86-64/pr20253-4d.d: Likewise. * testsuite/ld-x86-64/pr20253-4e.d: Likewise. * testsuite/ld-x86-64/pr20253-4f.d: Likewise. * testsuite/ld-x86-64/pr20253-5.s: Likewise. * testsuite/ld-x86-64/pr20253-5a.d: Likewise. * testsuite/ld-x86-64/pr20253-5b.d: Likewise. * testsuite/ld-ifunc/ifunc-18a-i386.d: Remove extra IRELATIVE relocation. * testsuite/ld-ifunc/ifunc-18a-x86-64.d: Likewise. * testsuite/ld-ifunc/ifunc-18b-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-18b-x86-64.d: Likewise. * testsuite/ld-ifunc/ifunc-18a.s: Fix a typo. * testsuite/ld-x86-64/x86-64.exp: Run pr20253-1 tests.
2016-06-19 00:16:52 +08:00
Disassembly of section .text:
Optimize x86 GOT32X/GOTPCRELX relocations R_386_GOT32X, R_X86_64_GOTPCRELX and R_X86_64_REX_GOTPCRELX relocations retrieve the symbol address via its GOT slot. If the symbol address is known at the link-time, we can use it directly by changing instruction encoding. Indirect branch can only be converted to PC relative direct branch. MOV can be changed to LEA or encoded differently with signed address. The subset of binary operations can be encoded only with signed address. If undefined weak symbol is resolved to zero link-time, we can use it as address. Zero addresss can't used with PC relative direct branch when PIC is true since the current PC is unknown. In 64-bit, 32-bit relocation for PC relatiave direct branch to zero may also overflow. If this optimization causes relocation overflow, --no-relax can be used to work around it. bfd/ PR ld/19609 * elf32-i386.c (elf_i386_convert_load): Convert to R_386_32 for load with locally bound symbols if PIC is false or there is no base register. Optimize branch to 0 if PIC is false. (elf_i386_relocate_section): Don't generate dynamic relocations against undefined weak symbols if PIC is false. * elf64-x86-64.c (elf_x86_64_convert_load): Disable optimization if we can't estimate relocation overflow with --no-relax. Convert to R_X86_64_32S/R_X86_64_32 for load with locally bound symbols if PIC is false. Optimize branch to 0 if PIC is false. (elf_x86_64_relocate_section): Don't generate dynamic relocations against undefined weak symbols if PIC is false. ld/ PR ld/19609 * testsuite/ld-i386/got1.dd: Updated. * testsuite/ld-i386/lea1c.d: Likewise. * testsuite/ld-i386/load1-nacl.d: Likewise. * testsuite/ld-i386/load1.d: Likewise. * testsuite/ld-i386/load4b.d: Likewise. * testsuite/ld-i386/load5b.d: Likewise. * testsuite/ld-i386/mov1b.d: Likewise. * testsuite/ld-x86-64/mov1b.d: Likewise. * testsuite/ld-x86-64/mov1d.d: Likewise. * testsuite/ld-ifunc/ifunc-21-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-21-x86-64.d: Likewise. * testsuite/ld-ifunc/ifunc-22-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-22-x86-64.d: Likewise. * testsuite/ld-x86-64/gotpcrel1.dd: Likewise. * testsuite/ld-x86-64/lea1a.d: Likewise. * testsuite/ld-x86-64/lea1b.d: Likewise. * testsuite/ld-x86-64/lea1c.d: Likewise. * testsuite/ld-x86-64/lea1d.d: Likewise. * testsuite/ld-x86-64/lea1e.d: Likewise. * testsuite/ld-x86-64/lea1f.d: Likewise. * testsuite/ld-x86-64/mov1b.d: Likewise. * testsuite/ld-x86-64/mov1d.d: Likewise. * testsuite/ld-x86-64/pr13082-3b.d: Likewise. * testsuite/ld-x86-64/pr13082-4b.d: Likewise. * testsuite/ld-x86-64/lea1.s: Add tests for 32-bit registers. * testsuite/ld-i386/pr19609-1.s: New file. * testsuite/ld-i386/pr19609-1a.d: Likewise. * testsuite/ld-i386/pr19609-1b.d: Likewise. * testsuite/ld-i386/pr19609-1c.d: Likewise. * testsuite/ld-i386/pr19609-1d.d: Likewise. * testsuite/ld-i386/pr19609-1e.d: Likewise. * testsuite/ld-i386/pr19609-1f.d: Likewise. * testsuite/ld-i386/pr19609-1g.d: Likewise. * testsuite/ld-i386/pr19609-1h.d: Likewise. * testsuite/ld-i386/pr19609-1i.d: Likewise. * testsuite/ld-i386/pr19609-2.s: Likewise. * testsuite/ld-i386/pr19609-2a.d: Likewise. * testsuite/ld-i386/pr19609-2b.d: Likewise. * testsuite/ld-i386/pr19609-2c.d: Likewise. * testsuite/ld-i386/undefweak.s: Likewise. * testsuite/ld-i386/undefweaka.d: Likewise. * testsuite/ld-i386/undefweakb.d: Likewise. * testsuite/ld-x86-64/pr13082-3c.d: Likewise. * testsuite/ld-x86-64/pr13082-3d.d: Likewise. * testsuite/ld-x86-64/pr19609-1.s: Likewise. * testsuite/ld-x86-64/pr19609-1a.d: Likewise. * testsuite/ld-x86-64/pr19609-1b.d: Likewise. * testsuite/ld-x86-64/pr19609-1c.d: Likewise. * testsuite/ld-x86-64/pr19609-1d.d: Likewise. * testsuite/ld-x86-64/pr19609-1e.d: Likewise. * testsuite/ld-x86-64/pr19609-1f.d: Likewise. * testsuite/ld-x86-64/pr19609-1g.d: Likewise. * testsuite/ld-x86-64/pr19609-1h.d: Likewise. * testsuite/ld-x86-64/pr19609-1i.d: Likewise. * testsuite/ld-x86-64/pr19609-1j.d: Likewise. * testsuite/ld-x86-64/pr19609-1k.d: Likewise. * testsuite/ld-x86-64/pr19609-1l.d: Likewise. * testsuite/ld-x86-64/pr19609-1m.d: Likewise. * testsuite/ld-x86-64/pr19609-2.s: Likewise. * testsuite/ld-x86-64/pr19609-2a.d: Likewise. * testsuite/ld-x86-64/pr19609-2b.d: Likewise. * testsuite/ld-x86-64/pr19609-2c.d: Likewise. * testsuite/ld-x86-64/pr19609-2d.d: Likewise. * testsuite/ld-x86-64/pr19609-3.s: Likewise. * testsuite/ld-x86-64/pr19609-3a.d: Likewise. * testsuite/ld-x86-64/pr19609-3b.d: Likewise. * testsuite/ld-x86-64/pr19609-4.s: Likewise. * testsuite/ld-x86-64/pr19609-4a.d: Likewise. * testsuite/ld-x86-64/pr19609-4b.d: Likewise. * testsuite/ld-x86-64/pr19609-4c.d: Likewise. * testsuite/ld-x86-64/pr19609-4d.d: Likewise. * testsuite/ld-x86-64/pr19609-4e.d: Likewise. * testsuite/ld-x86-64/pr19609-5.s: Likewise. * testsuite/ld-x86-64/pr19609-5a.d: Likewise. * testsuite/ld-x86-64/pr19609-5b.d: Likewise. * testsuite/ld-x86-64/pr19609-5c.d: Likewise. * testsuite/ld-x86-64/pr19609-5d.d: Likewise. * testsuite/ld-x86-64/pr19609-5e.d: Likewise. * testsuite/ld-x86-64/pr19609-6.s: Likewise. * testsuite/ld-x86-64/pr19609-6a.d: Likewise. * testsuite/ld-x86-64/pr19609-6b.d: Likewise. * testsuite/ld-x86-64/pr19609-6c.d: Likewise. * testsuite/ld-x86-64/pr19609-6d.d: Likewise. * testsuite/ld-x86-64/pr19609-7.s: Likewise. * testsuite/ld-x86-64/pr19609-7a.d: Likewise. * testsuite/ld-x86-64/pr19609-7b.d: Likewise. * testsuite/ld-x86-64/pr19609-7c.d: Likewise. * testsuite/ld-x86-64/pr19609-7d.d: Likewise. * testsuite/ld-i386/i386.exp: Run undefweak tests and tests for PR ld/19609. * testsuite/ld-x86-64/x86-64.exp: Run pr13082-3c, pr13082-3d and tests for PR ld/19609.
2016-02-27 01:38:08 +08:00
Don't generate PLT for IFUNC GOT/pointer reference If a backend supports it, PLT entry isn't needed when all references to a STT_GNU_IFUNC symbols are done via GOT or static function pointers. For GOT entries, We generate dynamic R_*_GLOB_DAT relocations for preemptable symbols and R_*_IRELATIVE relocations for non-preemptable symbols to update them with real function address. For static pointer pointers, we generate dynamic pointer relocations and store them in: 1. .rel[a].ifunc section in PIC object. 2. .rel[a].got section in dynamic executable. 3. .rel[a].iplt section in static executable. We don't allocate GOT entry if it isn't used. bfd/ PR ld/20253 * elf-bfd.h (_bfd_elf_allocate_ifunc_dyn_relocs): Add an bfd_boolean argument. * elf-ifunc.c (_bfd_elf_create_ifunc_sections): Replace "shared object" with "PIC object" in comments. (_bfd_elf_allocate_ifunc_dyn_relocs): Updated. Replace "shared object" with "PIC object" in comments. Avoid PLT if requested. Generate dynamic relocations for non-GOT references. Make room for the special first entry in PLT and allocate PLT entry only for PLT and PC-relative references. Store dynamic GOT relocations in .rel[a].iplt section for static executables. If PLT isn't used, always use GOT for symbol value. Don't allocate GOT entry if it isn't used. * elf32-i386.c (elf_i386_check_relocs): Increment PLT reference count only in the code section. Allocate dynamic pointer relocation against STT_GNU_IFUNC symbol in the non-code section. (elf_i386_adjust_dynamic_symbol): Increment PLT reference count only for PC-relative references. (elf_i386_allocate_dynrelocs): Pass TRUE to _bfd_elf_allocate_ifunc_dyn_relocs. (elf_i386_relocate_section): Allow R_386_GOT32/R_386_GOT32X relocations against STT_GNU_IFUNC symbols without PLT. Generate dynamic pointer relocation against STT_GNU_IFUNC symbol in the non-code section and store it in the proper REL section. Don't allow non-pointer relocation against STT_GNU_IFUNC symbol without PLT. (elf_i386_finish_dynamic_symbol): Generate dynamic R_386_IRELATIVE and R_386_GLOB_DAT GOT relocations against STT_GNU_IFUNC symbols without PLT. (elf_i386_finish_dynamic_sections): Don't handle local STT_GNU_IFUNC symbols here. (elf_i386_output_arch_local_syms): Handle local STT_GNU_IFUNC symbols here. (elf_backend_output_arch_local_syms): New. * elf32-x86-64.c (elf_i386_check_relocs): Increment PLT reference count only in the code section. Allocate dynamic pointer relocation against STT_GNU_IFUNC symbol in the non-code section. (elf_x86_64_adjust_dynamic_symbol): Increment PLT reference count only for PC-relative references. (elf_x86_64_allocate_dynrelocs): Pass TRUE to _bfd_elf_allocate_ifunc_dyn_relocs. (elf_x86_64_relocate_section): Allow R_X86_64_GOTPCREL, R_X86_64_GOTPCRELX, R_X86_64_REX_GOTPCRELX and R_X86_64_GOTPCREL64 relocations against STT_GNU_IFUNC symbols without PLT. Generate dynamic pointer relocation against STT_GNU_IFUNC symbol in the non-code section and store it in the proper RELA section. Don't allow non-pointer relocation against STT_GNU_IFUNC symbol without PLT. (elf_x86_64_finish_dynamic_symbol): Generate dynamic R_X86_64_IRELATIVE and R_X86_64_GLOB_DAT GOT relocations against STT_GNU_IFUNC symbols without PLT. (elf_x86_64_finish_dynamic_sections): Don't handle local STT_GNU_IFUNC symbols here. (elf_x86_64_output_arch_local_syms): Handle local STT_GNU_IFUNC symbols here. (elf_backend_output_arch_local_syms): New. * elfnn-aarch64.c (elfNN_aarch64_allocate_ifunc_dynrelocs): Pass FALSE to _bfd_elf_allocate_ifunc_dyn_relocs. ld/ PR ld/20253 * testsuite/ld-i386/i386.exp: Run PR ld/20253 tests. * testsuite/ld-i386/no-plt.exp: Likewise. * testsuite/ld-x86-64/no-plt.exp: Likewise. * testsuite/ld-i386/pr13302.d: Remove .rel.plt section. * testsuite/ld-ifunc/ifunc-13-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-13-x86-64.d: Likewise. * testsuite/ld-ifunc/ifunc-15-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-15-x86-64.d: Likewise. * testsuite/ld-x86-64/pr13082-5a.d: Likewise. * testsuite/ld-x86-64/pr13082-5b.d: Likewise. * testsuite/ld-x86-64/pr13082-6a.d: Likewise. * testsuite/ld-x86-64/pr13082-6b.d: Likewise. * testsuite/ld-i386/pr20244-2a.d: Remove .plt section. * testsuite/ld-ifunc/ifunc-21-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-21-x86-64.d: Likewise. * testsuite/ld-ifunc/ifunc-22-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-22-x86-64.d: Likewise. * testsuite/ld-i386/pr20244-2b.d: Updated. * testsuite/ld-i386/pr20244-2c.d: Likewise. * testsuite/ld-ifunc/ifunc-18a-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-18a-x86-64.d: Likewise. * testsuite/ld-ifunc/ifunc-18b-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-18b-x86-64.d: Likewise. * testsuite/ld-i386/pr20253-1a.c: New file. * testsuite/ld-i386/pr20253-1b.S: Likewise. * testsuite/ld-i386/pr20253-1c.S: Likewise. * testsuite/ld-i386/pr20253-1d.S: Likewise. * testsuite/ld-i386/pr20253-2a.c: Likewise. * testsuite/ld-i386/pr20253-2b.S: Likewise. * testsuite/ld-i386/pr20253-2c.S: Likewise. * testsuite/ld-i386/pr20253-2d.S: Likewise. * testsuite/ld-i386/pr20253-3.d: Likewise. * testsuite/ld-i386/pr20253-3.s: Likewise. * testsuite/ld-i386/pr20253-4.s: Likewise. * testsuite/ld-i386/pr20253-4a.d: Likewise. * testsuite/ld-i386/pr20253-4b.d: Likewise. * testsuite/ld-i386/pr20253-4c.d: Likewise. * testsuite/ld-i386/pr20253-5.d: Likewise. * testsuite/ld-i386/pr20253-5.s: Likewise. * testsuite/ld-ifunc/ifunc-23-x86.s: Likewise. * testsuite/ld-ifunc/ifunc-23a-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-23b-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-23c-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-24-x86.s: Likewise. * testsuite/ld-ifunc/ifunc-24a-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-24b-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-24c-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-25-x86.s: Likewise. * testsuite/ld-ifunc/ifunc-25a-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-25b-x86.d: Likewise. * testsuite/ld-ifunc/ifunc-25c-x86.d: Likewise. * testsuite/ld-x86-64/pr20253-1.s: Likewise. * testsuite/ld-x86-64/pr20253-1a.d: Likewise. * testsuite/ld-x86-64/pr20253-1b.d: Likewise. * testsuite/ld-x86-64/pr20253-1c.d: Likewise. * testsuite/ld-x86-64/pr20253-1d.d: Likewise. * testsuite/ld-x86-64/pr20253-1e.d: Likewise. * testsuite/ld-x86-64/pr20253-1f.d: Likewise. * testsuite/ld-x86-64/pr20253-1g.d: Likewise. * testsuite/ld-x86-64/pr20253-1h.d: Likewise. * testsuite/ld-x86-64/pr20253-1i.d: Likewise. * testsuite/ld-x86-64/pr20253-1j.d: Likewise. * testsuite/ld-x86-64/pr20253-1k.d: Likewise. * testsuite/ld-x86-64/pr20253-1l.d: Likewise. * testsuite/ld-x86-64/pr20253-2a.c: Likewise. * testsuite/ld-x86-64/pr20253-2b.S: Likewise. * testsuite/ld-x86-64/pr20253-2c.S: Likewise. * testsuite/ld-x86-64/pr20253-2d.S: Likewise. * testsuite/ld-x86-64/pr20253-3.d: Likewise. * testsuite/ld-x86-64/pr20253-3.s: Likewise. * testsuite/ld-x86-64/pr20253-4.s: Likewise. * testsuite/ld-x86-64/pr20253-4a.d: Likewise. * testsuite/ld-x86-64/pr20253-4b.d: Likewise. * testsuite/ld-x86-64/pr20253-4c.d: Likewise. * testsuite/ld-x86-64/pr20253-4d.d: Likewise. * testsuite/ld-x86-64/pr20253-4e.d: Likewise. * testsuite/ld-x86-64/pr20253-4f.d: Likewise. * testsuite/ld-x86-64/pr20253-5.s: Likewise. * testsuite/ld-x86-64/pr20253-5a.d: Likewise. * testsuite/ld-x86-64/pr20253-5b.d: Likewise. * testsuite/ld-ifunc/ifunc-18a-i386.d: Remove extra IRELATIVE relocation. * testsuite/ld-ifunc/ifunc-18a-x86-64.d: Likewise. * testsuite/ld-ifunc/ifunc-18b-i386.d: Likewise. * testsuite/ld-ifunc/ifunc-18b-x86-64.d: Likewise. * testsuite/ld-ifunc/ifunc-18a.s: Fix a typo. * testsuite/ld-x86-64/x86-64.exp: Run pr20253-1 tests.
2016-06-19 00:16:52 +08:00
0+804807c <__start>:
+[a-f0-9]+: ff 93 fc ff ff ff call \*-0x4\(%ebx\)
+[a-f0-9]+: ff a3 fc ff ff ff jmp \*-0x4\(%ebx\)
+[a-f0-9]+: 03 83 fc ff ff ff add -0x4\(%ebx\),%eax
+[a-f0-9]+: 8b 83 fc ff ff ff mov -0x4\(%ebx\),%eax
+[a-f0-9]+: 85 83 fc ff ff ff test %eax,-0x4\(%ebx\)
+[a-f0-9]+: c7 c0 a1 80 04 08 mov \$0x80480a1,%eax
0+80480a0 <foo>:
+[a-f0-9]+: c3 ret
0+80480a1 <bar>:
+[a-f0-9]+: c3 ret
#pass