Index: lld/ELF/Arch/LoongArch.cpp =================================================================== --- lld/ELF/Arch/LoongArch.cpp +++ lld/ELF/Arch/LoongArch.cpp @@ -457,6 +457,7 @@ return R_RISCV_ADD; case R_LARCH_32_PCREL: case R_LARCH_64_PCREL: + case R_LARCH_PCREL20_S2: return R_PC; case R_LARCH_B16: case R_LARCH_B21: @@ -564,6 +565,12 @@ write64le(loc, val); return; + case R_LARCH_PCREL20_S2: + checkInt(loc, val, 22, rel); + checkAlignment(loc, val, 4, rel); + write32le(loc, setJ20(read32le(loc), val >> 2)); + return; + case R_LARCH_B16: checkInt(loc, val, 18, rel); checkAlignment(loc, val, 4, rel); Index: lld/test/ELF/loongarch-pcrel20-s2.s =================================================================== --- /dev/null +++ lld/test/ELF/loongarch-pcrel20-s2.s @@ -0,0 +1,32 @@ +# REQUIRES: loongarch + +# RUN: llvm-mc --filetype=obj --triple=loongarch32-unknown-elf %s -o %t.la32.o +# RUN: llvm-mc --filetype=obj --triple=loongarch64-unknown-elf %s -o %t.la64.o + +# RUN: ld.lld %t.la32.o --section-start=.text=0x20000 --section-start=.data=0x20008 -o %t.la32.1 +# RUN: ld.lld %t.la64.o --section-start=.text=0x20000 --section-start=.data=0x20008 -o %t.la64.1 +# RUN: llvm-objdump --no-show-raw-insn -d %t.la32.1 | FileCheck --match-full-lines %s +# RUN: llvm-objdump --no-show-raw-insn -d %t.la64.1 | FileCheck --match-full-lines %s +# CHECK: 20000: pcaddi $t0, 2 + +# RUN: not ld.lld %t.la32.o --section-start=.text=0x20000 --section-start=.data=0x220000 -o /dev/null 2>&1 | \ +# RUN: FileCheck -DFILE=%t.la32.o --check-prefix=ERROR-RANGE %s +# RUN: not ld.lld %t.la64.o --section-start=.text=0x20000 --section-start=.data=0x220000 -o /dev/null 2>&1 | \ +# RUN: FileCheck -DFILE=%t.la64.o --check-prefix=ERROR-RANGE %s +# ERROR-RANGE: error: [[FILE]]:(.text+0x0): relocation R_LARCH_PCREL20_S2 out of range: 2097152 is not in [-2097152, 2097151]; references section '.data' + +# RUN: not ld.lld %t.la32.o --section-start=.text=0x20000 --section-start=.data=0x40001 -o /dev/null 2>&1 | \ +# RUN: FileCheck -DFILE=%t.la32.o --check-prefix=ERROR-ALIGN %s +# RUN: not ld.lld %t.la64.o --section-start=.text=0x20000 --section-start=.data=0x40001 -o /dev/null 2>&1 | \ +# RUN: FileCheck -DFILE=%t.la64.o --check-prefix=ERROR-ALIGN %s +# ERROR-ALIGN: error: [[FILE]]:(.text+0x0): improper alignment for relocation R_LARCH_PCREL20_S2: 0x20001 is not aligned to 4 bytes + +.global _start + +_start: +1: + pcaddi $t0, 0 + .reloc 1b, R_LARCH_PCREL20_S2, .data + +.data + .word 0