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llvm-project/lld/test/ELF/mips-gprel32-relocs.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] Implement R_MIPS_GPREL16/R_MIPS_GPREL32 relocations The R_MIPS_GPREL16 / R_MIPS_GPREL32 relocations use the following expressions for calculations: ``` local symbol: S + A + GP0 - GP global symbol: S + A - GP GP - Represents the final gp value, i.e. _gp symbol GP0 - Represents the gp value used to create the relocatable object ``` The GP0 value is taken from the .reginfo data section defined by an object file. To implement that I keep a reference to `MipsReginfoInputSection` in the `ObjectFile` class. This reference is used by the `ObjectFile::getMipsGp0` method to return the GP0 value. Differential Revision: http://reviews.llvm.org/D15760 llvm-svn: 256416
2015-12-25 21:02:13 +08:00
# Check R_MIPS_GPREL32 relocation calculation.
# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux %s -o %t.o
[mips] Make another set of test cases more tolerant to exact symbol addresses. NFC llvm-svn: 371313
2019-09-07 23:44:40 +08:00
# RUN: echo "SECTIONS { \
# RUN: .rodata ALIGN(0x1000) : { *(.rodata) } \
# RUN: . = 0x20000; .text : { *(.text) } \
# RUN: }" > %t.script
# RUN: ld.lld -shared --script %t.script -o %t.so %t.o
[test] lld/test/: change llvm-objdump single-dash long options to double-dash options
2020-03-16 08:47:44 +08:00
# RUN: llvm-objdump -s --section=.rodata -t %t.so | FileCheck %s
[ELF][MIPS] Implement R_MIPS_GPREL16/R_MIPS_GPREL32 relocations The R_MIPS_GPREL16 / R_MIPS_GPREL32 relocations use the following expressions for calculations: ``` local symbol: S + A + GP0 - GP global symbol: S + A - GP GP - Represents the final gp value, i.e. _gp symbol GP0 - Represents the gp value used to create the relocatable object ``` The GP0 value is taken from the .reginfo data section defined by an object file. To implement that I keep a reference to `MipsReginfoInputSection` in the `ObjectFile` class. This reference is used by the `ObjectFile::getMipsGp0` method to return the GP0 value. Differential Revision: http://reviews.llvm.org/D15760 llvm-svn: 256416
2015-12-25 21:02:13 +08:00
.text
.globl __start
__start:
lw $t0,%call16(__start)($gp)
foo:
nop
bar:
nop
.section .rodata, "a"
v1:
.gpword foo
.gpword bar
# CHECK: SYMBOL TABLE:
[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: 00020008 l .text 00000000 bar
# CHECK: 00020004 l .text 00000000 foo
# CHECK: 00028000 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: Contents of section .rodata:
# CHECK: 1000 ffff8004 ffff8008
# ^ 0x20004 - 0x28000
# ^ 0x20008 - 0x28000