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llvm-project/lld/test/ELF/x86-64-reloc-gotoff64.s

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Handle R_X86_64_GOTOFF64. R_X86_64_GOTOFF64 is a relocation type to set to a distance betwween a symbol and the beginning of the .got section. Previously, we always created a dynamic relocation for the relocation type even though it can be resolved at link-time. Creating a dynamic relocation for R_X86_64_GOTOFF64 caused link failure for some programs that do have a relocation of the type in a .text section, as text relocations are prohibited in most configurations. Differential Revision: https://reviews.llvm.org/D48058 llvm-svn: 334534
2018-06-13 04:27:16 +08:00
// REQUIRES: x86
// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
[ELF][X86_64] Use R_GOTREL_FROM_END instead of R_GOTREL for R_X86_64_GOTOFF64 Summary: R_X86_64_GOTOFF64: S + A - GOT R_X86_64_GOTPC{32,64}: GOT + A - P (R_GOTONLY_PC_FROM_END) R_X86_64_GOTOFF64 should use R_GOTREL_FROM_END so that in conjunction with R_X86_64_GOTPC{32,64}, the `GOT` term is neutralized. This also matches the handling of R_386_GOTOFF (S + A - GOT). Reviewers: ruiu, espindola Subscribers: emaste, arichardson, llvm-commits Differential Revision: https://reviews.llvm.org/D48095 llvm-svn: 334672
2018-06-14 07:29:28 +08:00
// RUN: ld.lld %t.o -shared -o %t.so
[lld][NFC] Update tests to use -S instead of -s when using llvm-readelf. Summary: llvm-readobj/readelf accepts both -s and -S as aliases for --sections. However with GNU readelf only -S means --section, and -s means --symbols. I would like to make llvm-readelf more compatible. Reviewers: MaskRay, espindola Reviewed By: MaskRay Subscribers: emaste, arichardson, steven_wu, dexonsmith, llvm-commits Differential Revision: https://reviews.llvm.org/D54118 llvm-svn: 346164
2018-11-06 04:39:06 +08:00
// RUN: llvm-readelf -S %t.so | FileCheck %s -check-prefix=SECTION
[ELF][X86_64] Use R_GOTREL_FROM_END instead of R_GOTREL for R_X86_64_GOTOFF64 Summary: R_X86_64_GOTOFF64: S + A - GOT R_X86_64_GOTPC{32,64}: GOT + A - P (R_GOTONLY_PC_FROM_END) R_X86_64_GOTOFF64 should use R_GOTREL_FROM_END so that in conjunction with R_X86_64_GOTPC{32,64}, the `GOT` term is neutralized. This also matches the handling of R_386_GOTOFF (S + A - GOT). Reviewers: ruiu, espindola Subscribers: emaste, arichardson, llvm-commits Differential Revision: https://reviews.llvm.org/D48095 llvm-svn: 334672
2018-06-14 07:29:28 +08:00
// RUN: llvm-objdump -d %t.so | FileCheck %s
[ELF][X86] Allow PT_LOAD to have overlapping p_offset ranges on EM_X86_64 Port the D64906 technique to EM_X86_64. Differential Revision: https://reviews.llvm.org/D67482 llvm-svn: 371958
2019-09-16 15:05:34 +08:00
// SECTION: .dynamic DYNAMIC 0000000000002290
// SECTION: .got.plt PROGBITS 0000000000003300 000300 000018
Handle R_X86_64_GOTOFF64. R_X86_64_GOTOFF64 is a relocation type to set to a distance betwween a symbol and the beginning of the .got section. Previously, we always created a dynamic relocation for the relocation type even though it can be resolved at link-time. Creating a dynamic relocation for R_X86_64_GOTOFF64 caused link failure for some programs that do have a relocation of the type in a .text section, as text relocations are prohibited in most configurations. Differential Revision: https://reviews.llvm.org/D48058 llvm-svn: 334534
2018-06-13 04:27:16 +08:00
[ELF][X86_64] Use R_GOTREL_FROM_END instead of R_GOTREL for R_X86_64_GOTOFF64 Summary: R_X86_64_GOTOFF64: S + A - GOT R_X86_64_GOTPC{32,64}: GOT + A - P (R_GOTONLY_PC_FROM_END) R_X86_64_GOTOFF64 should use R_GOTREL_FROM_END so that in conjunction with R_X86_64_GOTPC{32,64}, the `GOT` term is neutralized. This also matches the handling of R_386_GOTOFF (S + A - GOT). Reviewers: ruiu, espindola Subscribers: emaste, arichardson, llvm-commits Differential Revision: https://reviews.llvm.org/D48095 llvm-svn: 334672
2018-06-14 07:29:28 +08:00
// The assembly is generated by
// gcc -O2 -S -mcmodel=medium -fPIC a.c
// This computes the pc-relative address (runtime address) of _DYNAMIC.
//
// extern long _DYNAMIC[] __attribute__((visibility("hidden")));
// long* dynamic() { return _DYNAMIC; }
Handle R_X86_64_GOTOFF64. R_X86_64_GOTOFF64 is a relocation type to set to a distance betwween a symbol and the beginning of the .got section. Previously, we always created a dynamic relocation for the relocation type even though it can be resolved at link-time. Creating a dynamic relocation for R_X86_64_GOTOFF64 caused link failure for some programs that do have a relocation of the type in a .text section, as text relocations are prohibited in most configurations. Differential Revision: https://reviews.llvm.org/D48058 llvm-svn: 334534
2018-06-13 04:27:16 +08:00
[ELF][X86] Allow PT_LOAD to have overlapping p_offset ranges on EM_X86_64 Port the D64906 technique to EM_X86_64. Differential Revision: https://reviews.llvm.org/D67482 llvm-svn: 371958
2019-09-16 15:05:34 +08:00
// 0x3300 (.got.plt) - 0x127b = 8325
// 0x2290 (_DYNAMIC) - 0x3300 (.got.plt) = -4208
// CHECK: 1274: {{.*}} leaq 8325(%rip), %rdx
// CHECK-NEXT: 127b: {{.*}} movabsq $-4208, %rax
[ELF][X86_64] Use R_GOTREL_FROM_END instead of R_GOTREL for R_X86_64_GOTOFF64 Summary: R_X86_64_GOTOFF64: S + A - GOT R_X86_64_GOTPC{32,64}: GOT + A - P (R_GOTONLY_PC_FROM_END) R_X86_64_GOTOFF64 should use R_GOTREL_FROM_END so that in conjunction with R_X86_64_GOTPC{32,64}, the `GOT` term is neutralized. This also matches the handling of R_386_GOTOFF (S + A - GOT). Reviewers: ruiu, espindola Subscribers: emaste, arichardson, llvm-commits Differential Revision: https://reviews.llvm.org/D48095 llvm-svn: 334672
2018-06-14 07:29:28 +08:00
.global dynamic
dynamic:
leaq _GLOBAL_OFFSET_TABLE_(%rip), %rdx
movabsq $_DYNAMIC@GOTOFF, %rax
addq %rdx, %rax
ret