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llvm-project/lld/test/ELF/got32-i386.s

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[ELF] - Stop producing broken output for R_386_GOT32[X] relocations. Previously we silently produced broken output for R_386_GOT32X/R_386_GOT32 relocations if they were used to compute the address of the symbol’s global offset table entry without base register when position-independent code is disabled. Situation happened because of recent ABI changes. Released ABI mentions that R_386_GOT32X can be calculated in a two different ways (so we did not follow ABI here before this patch), but draft ABI also mentions R_386_GOT32 relocation here. We should use the same calculations for both relocations. Problem is that we always calculated them as G + A - GOT (offset from end of GOT), but for case when PIC is disabled, according to i386 ABI calculation should be G + A, what should produce just an address in GOT finally. ABI: https://github.com/hjl-tools/x86-psABI/wiki/intel386-psABI-draft.pdf (p36, p60). llvm-svn: 299812
2017-04-08 14:14:14 +08:00
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=i686-pc-linux %s -o %t.o
# RUN: ld.lld %t.o -o %t
# RUN: llvm-objdump -section-headers -d %t | FileCheck %s
## We have R_386_GOT32 relocation here.
.globl foo
.type foo, @function
foo:
nop
_start:
movl foo@GOT, %ebx
## 73728 == 0x12000 == ADDR(.got)
# CHECK: _start:
Align AArch64 and i386 image base to superpage Summary: As for x86_64, the default image base for AArch64 and i386 should be aligned to a superpage appropriate for the architecture. On AArch64, this is 2 MiB, on i386 it is 4 MiB. Reviewers: emaste, grimar, javed.absar, espindola, ruiu, peter.smith, srhines, rprichard Reviewed By: ruiu, peter.smith Subscribers: jfb, markj, arichardson, krytarowski, kristof.beyls, llvm-commits Differential Revision: https://reviews.llvm.org/D50297 llvm-svn: 342746
2018-09-22 00:58:13 +08:00
# CHECK-NEXT: 401001: 8b 1d {{.*}} movl 4202496, %ebx
[ELF] - Stop producing broken output for R_386_GOT32[X] relocations. Previously we silently produced broken output for R_386_GOT32X/R_386_GOT32 relocations if they were used to compute the address of the symbol’s global offset table entry without base register when position-independent code is disabled. Situation happened because of recent ABI changes. Released ABI mentions that R_386_GOT32X can be calculated in a two different ways (so we did not follow ABI here before this patch), but draft ABI also mentions R_386_GOT32 relocation here. We should use the same calculations for both relocations. Problem is that we always calculated them as G + A - GOT (offset from end of GOT), but for case when PIC is disabled, according to i386 ABI calculation should be G + A, what should produce just an address in GOT finally. ABI: https://github.com/hjl-tools/x86-psABI/wiki/intel386-psABI-draft.pdf (p36, p60). llvm-svn: 299812
2017-04-08 14:14:14 +08:00
# CHECK: Sections:
[LLD][ELF] - Update tests after r352366. r352366 "[llvm-objdump] - Print LMAs when dumping section headers." changed the format of llvm-objdump output. We have to update the LLD tests. llvm-svn: 352372
2019-01-28 23:03:47 +08:00
# CHECK: Name Size VMA
Align AArch64 and i386 image base to superpage Summary: As for x86_64, the default image base for AArch64 and i386 should be aligned to a superpage appropriate for the architecture. On AArch64, this is 2 MiB, on i386 it is 4 MiB. Reviewers: emaste, grimar, javed.absar, espindola, ruiu, peter.smith, srhines, rprichard Reviewed By: ruiu, peter.smith Subscribers: jfb, markj, arichardson, krytarowski, kristof.beyls, llvm-commits Differential Revision: https://reviews.llvm.org/D50297 llvm-svn: 342746
2018-09-22 00:58:13 +08:00
# CHECK: .got 00000004 0000000000402000
[ELF] - Stop producing broken output for R_386_GOT32[X] relocations. Previously we silently produced broken output for R_386_GOT32X/R_386_GOT32 relocations if they were used to compute the address of the symbol’s global offset table entry without base register when position-independent code is disabled. Situation happened because of recent ABI changes. Released ABI mentions that R_386_GOT32X can be calculated in a two different ways (so we did not follow ABI here before this patch), but draft ABI also mentions R_386_GOT32 relocation here. We should use the same calculations for both relocations. Problem is that we always calculated them as G + A - GOT (offset from end of GOT), but for case when PIC is disabled, according to i386 ABI calculation should be G + A, what should produce just an address in GOT finally. ABI: https://github.com/hjl-tools/x86-psABI/wiki/intel386-psABI-draft.pdf (p36, p60). llvm-svn: 299812
2017-04-08 14:14:14 +08:00
# RUN: not ld.lld %t.o -o %t -pie 2>&1 | FileCheck %s --check-prefix=ERR
Update Error Message Summary: Updates error message for dynamic relocation attempt for read only segments. Reviewers: ruiu Reviewed By: ruiu Subscribers: emaste, javed.absar, arichardson, llvm-commits Differential Revision: https://reviews.llvm.org/D44453 llvm-svn: 327584
2018-03-15 06:05:12 +08:00
# ERR: error: can't create dynamic relocation R_386_GOT32 against symbol: foo in readonly segment; recompile object files with -fPIC or pass '-Wl,-z,notext' to allow text relocations in the output