diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2022-07-14 18:50:02 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2022-07-14 18:50:02 +0000 |
| commit | 1f917f69ff07f09b6dbb670971f57f8efe718b84 (patch) | |
| tree | 99293cbc1411737cd995dac10a99b2c40ef0944c /lld/MachO/Arch/ARM64Common.cpp | |
| parent | 145449b1e420787bb99721a429341fa6be3adfb6 (diff) | |
Vendor import of llvm-project main llvmorg-15-init-16436-g18a6ab5b8d1f.vendor/llvm-project/llvmorg-15-init-16436-g18a6ab5b8d1f
Diffstat (limited to 'lld/MachO/Arch/ARM64Common.cpp')
| -rw-r--r-- | lld/MachO/Arch/ARM64Common.cpp | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/lld/MachO/Arch/ARM64Common.cpp b/lld/MachO/Arch/ARM64Common.cpp index f55258ce8ec9..27fdf4ba14d9 100644 --- a/lld/MachO/Arch/ARM64Common.cpp +++ b/lld/MachO/Arch/ARM64Common.cpp @@ -109,3 +109,21 @@ void ARM64Common::relaxGotLoad(uint8_t *loc, uint8_t type) const { instruction = ((instruction & 0x001fffff) | 0x91000000); write32le(loc, instruction); } + +void ARM64Common::handleDtraceReloc(const Symbol *sym, const Reloc &r, + uint8_t *loc) const { + assert(r.type == ARM64_RELOC_BRANCH26); + + if (config->outputType == MH_OBJECT) + return; + + if (sym->getName().startswith("___dtrace_probe")) { + // change call site to a NOP + write32le(loc, 0xD503201F); + } else if (sym->getName().startswith("___dtrace_isenabled")) { + // change call site to 'MOVZ X0,0' + write32le(loc, 0xD2800000); + } else { + error("Unrecognized dtrace symbol prefix: " + toString(*sym)); + } +} |