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llvm-project/lld/test/ELF/mips-n32-rels.s

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[ELF] Move `# REQUIRES:` line to the top llvm-svn: 335625
2018-06-27 00:58:19 +08:00
# REQUIRES: mips
[ELF][MIPS] N32 ABI support In short the patch introduces support for linking object file conform MIPS N32 ABI [1]. This ABI is similar to N64 ABI but uses 32-bit pointer size. The most non-trivial requirement of this ABI is one more relocation packing format. N64 ABI puts multiple relocation type into the single relocation record. The N32 ABI uses series of successive relocations with the same offset for this purpose. In this patch, new function `mergeMipsN32RelTypes` handle this case and "convert" N32 relocation to the N64 relocation so the rest of the code keep unchanged. For now, linker does not support series of relocations applied to sections without SHF_ALLOC bit. Probably later I will add the support or insert some sort of assert into the `relocateNonAlloc` routine to catch this case. [1] ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/MIPS-N32-ABI-Handbook.pdf Differential revision: https://reviews.llvm.org/D26298 llvm-svn: 286052
2016-11-06 06:58:01 +08:00
# Check handling of N32 ABI relocation records.
[ELF][MIPS] Use llvm-mc to generate test case input file. NFC llvm-svn: 336201
2018-07-03 22:39:27 +08:00
# RUN: llvm-mc -filetype=obj -triple=mips64-unknown-linux \
# RUN: -target-abi n32 -o %t.o %s
[mips] Make another set of test cases more tolerant to exact symbol addresses. NFC llvm-svn: 371458
2019-09-10 06:04:20 +08:00
# RUN: echo "SECTIONS { \
# RUN: . = 0x20000; .text ALIGN(0x100) : { *(.text) } \
# RUN: }" > %t.script
# RUN: ld.lld %t.o -script %t.script -o %t.exe
# RUN: llvm-objdump -t -d -s --no-show-raw-insn %t.exe | FileCheck %s
# RUN: llvm-readelf -h %t.exe | FileCheck -check-prefix=ELF %s
[ELF][MIPS] N32 ABI support In short the patch introduces support for linking object file conform MIPS N32 ABI [1]. This ABI is similar to N64 ABI but uses 32-bit pointer size. The most non-trivial requirement of this ABI is one more relocation packing format. N64 ABI puts multiple relocation type into the single relocation record. The N32 ABI uses series of successive relocations with the same offset for this purpose. In this patch, new function `mergeMipsN32RelTypes` handle this case and "convert" N32 relocation to the N64 relocation so the rest of the code keep unchanged. For now, linker does not support series of relocations applied to sections without SHF_ALLOC bit. Probably later I will add the support or insert some sort of assert into the `relocateNonAlloc` routine to catch this case. [1] ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/MIPS-N32-ABI-Handbook.pdf Differential revision: https://reviews.llvm.org/D26298 llvm-svn: 286052
2016-11-06 06:58:01 +08:00
[ELF][MIPS] Use llvm-mc to generate test case input file. NFC llvm-svn: 336201
2018-07-03 22:39:27 +08:00
.option pic2
.text
.type __start, @function
.global __start
__start:
lui $gp,%hi(%neg(%gp_rel(__start))) # R_MIPS_GPREL16
# R_MIPS_SUB
# R_MIPS_HI16
loc:
daddiu $gp,$gp,%lo(%neg(%gp_rel(__start))) # R_MIPS_GPREL16
# R_MIPS_SUB
# R_MIPS_LO16
.section .rodata,"a",@progbits
.gpword(loc) # R_MIPS_GPREL32
[ELF][MIPS] N32 ABI support In short the patch introduces support for linking object file conform MIPS N32 ABI [1]. This ABI is similar to N64 ABI but uses 32-bit pointer size. The most non-trivial requirement of this ABI is one more relocation packing format. N64 ABI puts multiple relocation type into the single relocation record. The N32 ABI uses series of successive relocations with the same offset for this purpose. In this patch, new function `mergeMipsN32RelTypes` handle this case and "convert" N32 relocation to the N64 relocation so the rest of the code keep unchanged. For now, linker does not support series of relocations applied to sections without SHF_ALLOC bit. Probably later I will add the support or insert some sort of assert into the `relocateNonAlloc` routine to catch this case. [1] ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/MIPS-N32-ABI-Handbook.pdf Differential revision: https://reviews.llvm.org/D26298 llvm-svn: 286052
2016-11-06 06:58:01 +08:00
[llvm-objdump] --syms: make flags closer to GNU objdump This fixes several issues. The behavior changes are: A SHN_COMMON symbol does not have the 'g' flag. An undefined symbol does not have 'g' or 'l' flag. A STB_GLOBAL SymbolRef::ST_Unknown symbol has the 'g' flag. A STB_LOCAL SymbolRef::ST_Unknown symbol has the 'l' flag. Reviewed By: rupprecht Differential Revision: https://reviews.llvm.org/D75659
2020-03-05 09:19:18 +08:00
# CHECK: 00020104 l .text 00000000 loc
# CHECK: 00028100 l .got 00000000 .hidden _gp
[llvm-objdump] Further rearrange llvm-objdump sections for compatability Summary: rL371826 rearranged some output from llvm-objdump for GNU objdump compatability, but there still seem to be some more. I think this rearrangement is a little closer. Overview of the ordering which matches GNU objdump: * Archive headers * File headers * Section headers * Symbol table * Dwarf debugging * Relocations (if `--disassemble` is not used) * Section contents * Disassembly Reviewers: jhenderson, justice_adams, grimar, ychen, espindola Reviewed By: jhenderson Subscribers: aprantl, emaste, arichardson, jrtc27, atanasyan, seiya, llvm-commits, MaskRay Tags: #llvm Differential Revision: https://reviews.llvm.org/D68066 llvm-svn: 373671
2019-10-04 06:01:08 +08:00
# CHECK: 00020100 g F .text 00000000 __start
# CHECK: Contents of section .rodata:
# CHECK-NEXT: {{[0-9a-f]+}} ffff8004
# ^-- loc - _gp
[ELF][MIPS] N32 ABI support In short the patch introduces support for linking object file conform MIPS N32 ABI [1]. This ABI is similar to N64 ABI but uses 32-bit pointer size. The most non-trivial requirement of this ABI is one more relocation packing format. N64 ABI puts multiple relocation type into the single relocation record. The N32 ABI uses series of successive relocations with the same offset for this purpose. In this patch, new function `mergeMipsN32RelTypes` handle this case and "convert" N32 relocation to the N64 relocation so the rest of the code keep unchanged. For now, linker does not support series of relocations applied to sections without SHF_ALLOC bit. Probably later I will add the support or insert some sort of assert into the `relocateNonAlloc` routine to catch this case. [1] ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/MIPS-N32-ABI-Handbook.pdf Differential revision: https://reviews.llvm.org/D26298 llvm-svn: 286052
2016-11-06 06:58:01 +08:00
# CHECK: Disassembly of section .text:
[llvm-objdump] Print newlines before and after "Disassembly of section ...:" This improves readability and the behavior is consistent with GNU objdump. The new test test/tools/llvm-objdump/X86/disassemble-section-name.s checks we print newlines before and after "Disassembly of section ...:" Differential Revision: https://reviews.llvm.org/D61127 llvm-svn: 359668
2019-05-01 18:40:48 +08:00
# CHECK-EMPTY:
[llvm-objdump] -d: print `00000000 <foo>:` instead of `00000000 foo:` The new behavior matches GNU objdump. A pair of angle brackets makes tests slightly easier. `.foo:` is not unique and thus cannot be used in a `CHECK-LABEL:` directive. Without `-LABEL`, the CHECK line can match the `Disassembly of section` line and causes the next `CHECK-NEXT:` to fail. ``` Disassembly of section .foo: 0000000000001634 .foo: ``` Bdragon: <> has metalinguistic connotation. it just "feels right" Reviewed By: rupprecht Differential Revision: https://reviews.llvm.org/D75713
2020-03-06 06:18:38 +08:00
# CHECK-NEXT: <__start>:
[mips] Make another set of test cases more tolerant to exact symbol addresses. NFC llvm-svn: 371458
2019-09-10 06:04:20 +08:00
# CHECK-NEXT: 20100: lui $gp, 1
# ^-- 0x20100 - 0x28100
# ^-- 0 - 0xffff8000
# ^-- %hi(0x8000)
[llvm-objdump] -d: print `00000000 <foo>:` instead of `00000000 foo:` The new behavior matches GNU objdump. A pair of angle brackets makes tests slightly easier. `.foo:` is not unique and thus cannot be used in a `CHECK-LABEL:` directive. Without `-LABEL`, the CHECK line can match the `Disassembly of section` line and causes the next `CHECK-NEXT:` to fail. ``` Disassembly of section .foo: 0000000000001634 .foo: ``` Bdragon: <> has metalinguistic connotation. it just "feels right" Reviewed By: rupprecht Differential Revision: https://reviews.llvm.org/D75713
2020-03-06 06:18:38 +08:00
# CHECK: <loc>:
[mips] Make another set of test cases more tolerant to exact symbol addresses. NFC llvm-svn: 371458
2019-09-10 06:04:20 +08:00
# CHECK-NEXT: 20104: daddiu $gp, $gp, -32768
# ^-- 0x20100 - 0x28100
# ^-- 0 - 0xffff8000
# ^-- %lo(0x8000)
[ELF][MIPS] N32 ABI support In short the patch introduces support for linking object file conform MIPS N32 ABI [1]. This ABI is similar to N64 ABI but uses 32-bit pointer size. The most non-trivial requirement of this ABI is one more relocation packing format. N64 ABI puts multiple relocation type into the single relocation record. The N32 ABI uses series of successive relocations with the same offset for this purpose. In this patch, new function `mergeMipsN32RelTypes` handle this case and "convert" N32 relocation to the N64 relocation so the rest of the code keep unchanged. For now, linker does not support series of relocations applied to sections without SHF_ALLOC bit. Probably later I will add the support or insert some sort of assert into the `relocateNonAlloc` routine to catch this case. [1] ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/MIPS-N32-ABI-Handbook.pdf Differential revision: https://reviews.llvm.org/D26298 llvm-svn: 286052
2016-11-06 06:58:01 +08:00
[mips] Make another set of test cases more tolerant to exact symbol addresses. NFC llvm-svn: 371458
2019-09-10 06:04:20 +08:00
# ELF: Class: ELF32
# ELF: Data: 2's complement, big endian
# ELF: Version: 1 (current)
# ELF: OS/ABI: UNIX - System V
[llvm-readelf] Print EI_ABIVERSION as decimal instead of hexadecimal This matches GNU readelf and llvm-readobj. Reviewed By: jhenderson Differential Revision: https://reviews.llvm.org/D72234
2020-01-06 06:56:27 +08:00
# ELF: ABI Version: 0
[mips] Make another set of test cases more tolerant to exact symbol addresses. NFC llvm-svn: 371458
2019-09-10 06:04:20 +08:00
# ELF: Type: EXEC (Executable file)
# ELF: Machine: MIPS R3000
# ELF: Version: 0x1
# ELF: Entry point address: 0x20100
# ELF: Flags: 0x60000026, pic, cpic, abi2, mips64