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llvm-project/lld/test/ELF/mips-tls-hilo.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] Support R_MIPS_TLS_DTPREL_HI16/LO16 and R_MIPS_TLS_TPREL_HI16/LO16 relocations That is initial and the most trivial patch to support TLS for MIPS targets. llvm-svn: 263712
2016-03-17 20:36:08 +08:00
# Check MIPS R_MIPS_TLS_DTPREL_HI16/LO16 and R_MIPS_TLS_TPREL_HI16/LO16
# relocations handling.
# RUN: llvm-mc -filetype=obj -triple=mips-unknown-linux %s -o %t.o
# RUN: ld.lld %t.o -o %t.exe
[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 -d -t --no-show-raw-insn %t.exe | FileCheck --check-prefix=DIS %s
[mips] Use llvm-readobj `-A` flag in test cases. NFC llvm-svn: 373589
2019-10-03 20:08:04 +08:00
# RUN: llvm-readobj -r -A %t.exe | FileCheck %s
[ELF][MIPS] Support R_MIPS_TLS_DTPREL_HI16/LO16 and R_MIPS_TLS_TPREL_HI16/LO16 relocations That is initial and the most trivial patch to support TLS for MIPS targets. llvm-svn: 263712
2016-03-17 20:36:08 +08:00
[ELF] Reject local-exec TLS relocations for -shared For x86-64, D33100 added a diagnostic for local-exec TLS relocations referencing a preemptible symbol. This patch generalizes it to non-preemptible symbols (see `-Bsymbolic` in `tls.s`) on all targets. Local-exec TLS relocations resolve to offsets relative to a fixed point within the static TLS block, which are only meaningful for the executable. With this change, `clang -fpic -shared -fuse-ld=bfd a.c` on the following example will be flagged for AArch64/ARM/i386/x86-64/RISC-V ``` static __attribute__((tls_model("local-exec"))) __thread long TlsVar = 42; long bump() { return ++TlsVar; } ``` Note, in GNU ld, at least arm, riscv and x86's ports have the similar diagnostics, but aarch64 and ppc64 do not error. Differential Revision: https://reviews.llvm.org/D93331
2020-12-22 00:47:04 +08:00
# RUN: not ld.lld %t.o -shared -o /dev/null 2>&1 | FileCheck %s --check-prefix=ERR --implicit-check-not=error:
# ERR: error: relocation R_MIPS_TLS_TPREL_HI16 against loc0 cannot be used with -shared
# ERR: error: relocation R_MIPS_TLS_TPREL_LO16 against loc0 cannot be used with -shared
[ELF][MIPS] Treat R_MIPS_TLS_{D}TPREL_HI16/LO16 as relative relocations These relocations are calculated as S + A - DTPREL or S + A - TPREL, where DTPREL = TlsVA - 0x8000, TPREL = TlsVA - 0x7000. So the result is relative to the TLS output section and is not an absolut value The fix allows to escape creation of unnecessary dynamic relocations in case of DSO linking. llvm-svn: 266923
2016-04-21 05:57:51 +08:00
[llvm-objdump] Map STT_TLS to ST_Other (previously ST_Data) ST_Data is used to model BFD `BFD_OBJECT`. A STT_TLS symbol does not have the `BFD_OBJECT` flag in BFD. This makes sense because a STT_TLS symbol is like in a different address space, normal data/object properties do not apply on them. With this change, a STT_TLS symbol will not be displayed as 'O'. This new behavior matches objdump. Differential Revision: https://reviews.llvm.org/D96735
2021-02-18 15:17:20 +08:00
# DIS: 00000000 l .tdata 00000000 loc0
[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
[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
# DIS: <__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
# DIS-NEXT: addiu $2, $3, 0
# ^-- %hi(loc0 - .tdata - 0x8000)
# DIS-NEXT: addiu $2, $3, -32768
# ^-- %lo(loc0 - .tdata - 0x8000)
# DIS-NEXT: addiu $2, $3, 0
# ^-- %hi(loc0 - .tdata - 0x7000)
# DIS-NEXT: addiu $2, $3, -28672
# ^-- %lo(loc0 - .tdata - 0x7000)
[ELF][MIPS] Support R_MIPS_TLS_DTPREL_HI16/LO16 and R_MIPS_TLS_TPREL_HI16/LO16 relocations That is initial and the most trivial patch to support TLS for MIPS targets. llvm-svn: 263712
2016-03-17 20:36:08 +08:00
# CHECK: Relocations [
# CHECK-NEXT: ]
# CHECK-NOT: Primary GOT
[ELF][MIPS] Treat R_MIPS_TLS_{D}TPREL_HI16/LO16 as relative relocations These relocations are calculated as S + A - DTPREL or S + A - TPREL, where DTPREL = TlsVA - 0x8000, TPREL = TlsVA - 0x7000. So the result is relative to the TLS output section and is not an absolut value The fix allows to escape creation of unnecessary dynamic relocations in case of DSO linking. llvm-svn: 266923
2016-04-21 05:57:51 +08:00
# SO: Relocations [
# SO-NEXT: ]
# SO: Primary GOT {
# SO: Local entries [
# SO-NEXT: ]
# SO-NEXT: Global entries [
# SO-NEXT: ]
# SO-NEXT: Number of TLS and multi-GOT entries: 0
# SO-NEXT: }
[ELF][MIPS] Support R_MIPS_TLS_DTPREL_HI16/LO16 and R_MIPS_TLS_TPREL_HI16/LO16 relocations That is initial and the most trivial patch to support TLS for MIPS targets. llvm-svn: 263712
2016-03-17 20:36:08 +08:00
.text
.globl __start
.type __start,@function
__start:
addiu $2, $3, %dtprel_hi(loc0) # R_MIPS_TLS_DTPREL_HI16
addiu $2, $3, %dtprel_lo(loc0) # R_MIPS_TLS_DTPREL_LO16
addiu $2, $3, %tprel_hi(loc0) # R_MIPS_TLS_TPREL_HI16
addiu $2, $3, %tprel_lo(loc0) # R_MIPS_TLS_TPREL_LO16
.section .tdata,"awT",%progbits
loc0:
.word 0