maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/lld/test/ELF/mips-hilo.s

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

53 lines
1.5 KiB
ArmAsm
Raw Normal View History

[ELF] Move `# REQUIRES:` line to the top llvm-svn: 335625
2018-06-27 00:58:19 +08:00
# REQUIRES: mips
[ELF] MIPS paired R_MIPS_HI16/LO16 relocations support Some MIPS relocations including `R_MIPS_HI16/R_MIPS_LO16` use combined addends. Such addend is calculated using addends of both paired relocations. Each `R_MIPS_HI16` relocation is paired with the next `R_MIPS_LO16` relocation. ABI requires to compute such combined addend in case of REL relocation record format only. For details see p. 4-17 at ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf This patch implements lookup of the next paired relocation suing new `InputSectionBase::findPairedRelocLocation` method. The primary disadvantage of this approach is that we put MIPS specific logic into the common code. The next disadvantage is that we lookup `R_MIPS_LO16` for each `R_MIPS_HI16` relocation, while in fact multiple `R_MIPS_HI16` might be paired with the single `R_MIPS_LO16`. From the other side this way allows us to keep `MipsTargetInfo` class stateless and implement later relocation handling in parallel. This patch does not support `R_MIPS_HI16/R_MIPS_LO16` relocations against `_gp_disp` symbol. In that case the relocations use a special formula for the calculation. That will be implemented later. Differential Revision: http://reviews.llvm.org/D15112 llvm-svn: 254461
2015-12-02 05:24:45 +08:00
# Check R_MIPS_HI16 / LO16 relocations 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 { . = 0x20000; .text ALIGN(0x1000) : { *(.text) } }" > %t.script
# RUN: ld.lld %t.o --script %t.script -o %t.exe
# RUN: llvm-objdump -d -t --no-show-raw-insn %t.exe | FileCheck %s
[ELF] MIPS paired R_MIPS_HI16/LO16 relocations support Some MIPS relocations including `R_MIPS_HI16/R_MIPS_LO16` use combined addends. Such addend is calculated using addends of both paired relocations. Each `R_MIPS_HI16` relocation is paired with the next `R_MIPS_LO16` relocation. ABI requires to compute such combined addend in case of REL relocation record format only. For details see p. 4-17 at ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf This patch implements lookup of the next paired relocation suing new `InputSectionBase::findPairedRelocLocation` method. The primary disadvantage of this approach is that we put MIPS specific logic into the common code. The next disadvantage is that we lookup `R_MIPS_LO16` for each `R_MIPS_HI16` relocation, while in fact multiple `R_MIPS_HI16` might be paired with the single `R_MIPS_LO16`. From the other side this way allows us to keep `MipsTargetInfo` class stateless and implement later relocation handling in parallel. This patch does not support `R_MIPS_HI16/R_MIPS_LO16` relocations against `_gp_disp` symbol. In that case the relocations use a special formula for the calculation. That will be implemented later. Differential Revision: http://reviews.llvm.org/D15112 llvm-svn: 254461
2015-12-02 05:24:45 +08:00
.text
.globl __start
__start:
lui $t0,%hi(__start)
lui $t1,%hi(g1)
addi $t0,$t0,%lo(__start+4)
addi $t0,$t0,%lo(g1+8)
lui $t0,%hi(l1+0x10000)
lui $t1,%hi(l1+0x20000)
addi $t0,$t0,%lo(l1+(-4))
.data
.type l1,@object
.size l1,4
l1:
.word 0
.globl g1
.type g1,@object
.size g1,4
g1:
.word 0
[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: SYMBOL TABLE:
# CHECK: 0021020 l O .data 00000004 l1
# CHECK: 0021000 .text 00000000 __start
# CHECK: 0021024 g O .data 00000004 g1
[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
# CHECK: __start:
# CHECK-NEXT: 21000: lui $8, 2
# ^-- %hi(__start+4)
# CHECK-NEXT: 21004: lui $9, 2
# ^-- %hi(g1+8)
# CHECK-NEXT: 21008: addi $8, $8, 4100
# ^-- %lo(__start+4)
# CHECK-NEXT: 2100c: addi $8, $8, 4140
# ^-- %lo(g1+8)
# CHECK-NEXT: 21010: lui $8, 3
# ^-- %hi(l1+0x10000-4)
# CHECK-NEXT: 21014: lui $9, 4
# ^-- %hi(l1+0x20000-4)
# CHECK-NEXT: 21018: addi $8, $8, 4124
# ^-- %lo(l1-4)