[lld] [LLD][COFF] Add support for ARM64EC import call thunks. (PR #107931)
Martin Storsjö via llvm-commits
llvm-commits at lists.llvm.org
Tue Sep 10 09:35:41 PDT 2024
================
@@ -1093,4 +1093,21 @@ void CHPERedirectionChunk::writeTo(uint8_t *buf) const {
}
}
+ImportThunkChunkARM64EC::ImportThunkChunkARM64EC(ImportFile *file)
+ : ImportThunkChunk(file->ctx, file->impSym), file(file) {}
+
+void ImportThunkChunkARM64EC::writeTo(uint8_t *buf) const {
+ memcpy(buf, importThunkARM64EC, sizeof(importThunkARM64EC));
+ applyArm64Addr(buf, file->impSym->getRVA(), rva, 12);
+ applyArm64Ldr(buf + 4, file->impSym->getRVA() & 0xfff);
+
+ uint32_t exitThunkRVA = exitThunk ? exitThunk->getRVA() : 0;
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mstorsjo wrote:
If this is 0, won't this end up with a rather bogus instruction sequence? Shouldn't we replace the adrp+add with a `mov x0, #0` or similar instead, in that case?
https://github.com/llvm/llvm-project/pull/107931
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