mirror of
https://github.com/llvm/llvm-project.git
synced 2025-04-17 23:36:40 +00:00
ba2de8f22d
The value of an absolute relocation, like R_RISCV_HI20 or R_PPC64_LO16, with a symbol index of 0, the resulting value should be treated as absolute and permitted in both -pie and -shared links. This change also resolves an absolute relocation referencing an undefined symbol in statically-linked executables. PPC64 has unfortunate exceptions: * R_PPC64_TOCBASE uses symbol index 0 but it should be treated as referencing the linker-defined .TOC. * R_PPC64_PCREL_OPT (https://reviews.llvm.org/D84360) could no longer rely on `isAbsoluteValue` return false.
41 lines
1.1 KiB
ArmAsm
41 lines
1.1 KiB
ArmAsm
# REQUIRES: riscv
|
|
# RUN: rm -rf %t && split-file %s %t && cd %t
|
|
|
|
# RUN: llvm-mc -filetype=obj -triple=riscv32-unknown-elf -mattr=+relax a.s -o rv32.o
|
|
# RUN: llvm-mc -filetype=obj -triple=riscv64-unknown-elf -mattr=+relax a.s -o rv64.o
|
|
# RUN: llvm-mc -filetype=obj -triple=riscv64-unknown-elf -mattr=+relax a.s -o rv64-pie.o
|
|
|
|
# RUN: ld.lld --relax-gp --undefined=__global_pointer$ rv32.o lds -pie -o rv32
|
|
# RUN: ld.lld --relax-gp --undefined=__global_pointer$ rv64.o lds -shared -o rv64
|
|
# RUN: llvm-objdump -td -M no-aliases --no-show-raw-insn rv32 | FileCheck %s
|
|
# RUN: llvm-objdump -td -M no-aliases --no-show-raw-insn rv64 | FileCheck %s
|
|
|
|
# CHECK: lui a0, 0x200
|
|
# CHECK-NEXT: addi a0, a0, 0x1
|
|
# CHECK-NEXT: lui a0, 0x200
|
|
# CHECK-NEXT: addi a0, a0, 0x1
|
|
# CHECK-NEXT: lw a0, 0x1(a0)
|
|
# CHECK-NEXT: sw a0, 0x1(a0)
|
|
|
|
#--- a.s
|
|
.globl abs
|
|
abs = 0x200001
|
|
|
|
.global _start
|
|
_start:
|
|
lui a0, %hi(abs)
|
|
addi a0, a0, %lo(abs)
|
|
.reloc ., R_RISCV_HI20, abs
|
|
lui a0, 0
|
|
.reloc ., R_RISCV_LO12_I, abs
|
|
addi a0, a0, 0
|
|
|
|
lw a0, %lo(abs)(a0)
|
|
sw a0, %lo(abs)(a0)
|
|
|
|
#--- lds
|
|
SECTIONS {
|
|
.text : {*(.text) }
|
|
.sdata 0x200000 : {}
|
|
}
|