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[ELF] Move `// REQUIRES:` line to the top llvm-svn: 335676
2018-06-27 06:20:04 +08:00
// REQUIRES: mips
[ELF] Define _GLOBAL_OFFSET_TABLE_ symbol relative to .got On many architectures gcc and clang will recognize _GLOBAL_OFFSET_TABLE_ - . and produce a relocation that can be processed without needing to know the value of _GLOBAL_OFFSET_TABLE_. This is not always the case; for example ARM gcc produces R_ARM_BASE_PREL but clang produces the more general R_ARM_REL32 to _GLOBAL_OFFSET_TABLE_. To evaluate this relocation correctly _GLOBAL_OFFSET_TABLE_ must be defined to be the either the base of the GOT or end of the GOT dependent on architecture.. If/when llvm-mc is changed to recognize _GLOBAL_OFFSET_TABLE_ - . this change will not be necessary for new objects. However there may still be old objects and versions of clang. Differential Revision: https://reviews.llvm.org/D34355 llvm-svn: 306282
2017-06-26 18:22:17 +08:00
// RUN: llvm-mc -filetype=obj -triple=mips64-unknown-linux %s -o %t
// RUN: ld.lld -shared %t -o %t2
[mips] Make a few test cases more tolerant to exact symbol addresses. NFC llvm-svn: 371065
2019-09-05 21:37:16 +08:00
// RUN: llvm-readelf --sections --symbols %t2 | FileCheck %s
[ELF] Define _GLOBAL_OFFSET_TABLE_ symbol relative to .got On many architectures gcc and clang will recognize _GLOBAL_OFFSET_TABLE_ - . and produce a relocation that can be processed without needing to know the value of _GLOBAL_OFFSET_TABLE_. This is not always the case; for example ARM gcc produces R_ARM_BASE_PREL but clang produces the more general R_ARM_REL32 to _GLOBAL_OFFSET_TABLE_. To evaluate this relocation correctly _GLOBAL_OFFSET_TABLE_ must be defined to be the either the base of the GOT or end of the GOT dependent on architecture.. If/when llvm-mc is changed to recognize _GLOBAL_OFFSET_TABLE_ - . this change will not be necessary for new objects. However there may still be old objects and versions of clang. Differential Revision: https://reviews.llvm.org/D34355 llvm-svn: 306282
2017-06-26 18:22:17 +08:00
// The Mips _GLOBAL_OFFSET_TABLE_ should be defined at the start of the .got
.globl a
.hidden a
.type a,@object
.comm a,4,4
.globl f
.type f,@function
f:
ld $v0,%got_page(a)($gp)
daddiu $v0,$v0,%got_ofst(a)
.global _start
.type _start,@function
_start:
lw $t0,%call16(f)($gp)
.word _GLOBAL_OFFSET_TABLE_ - .
[mips] Make a few test cases more tolerant to exact symbol addresses. NFC llvm-svn: 371065
2019-09-05 21:37:16 +08:00
// CHECK: {{.*}} .got PROGBITS [[GOT:[0-9a-f]+]]
// CHECK: {{.*}} [[GOT]] {{.*}} _GLOBAL_OFFSET_TABLE_