[lld] [llvm] [LLD][COFF] Add support for ARM64EC entry thunks. (PR #88132)

[Martin Storsjö via llvm-commits]

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@@ -0,0 +1,345 @@
+// REQUIRES: aarch64
+// RUN: split-file %s %t.dir && cd %t.dir
+
+#--- test-simple.s
+// Build a simple function with an entry thunk.
+
+    .section .text,"xr",discard,func
+    .globl func
+    .p2align 2
+func:
+    mov w0, #1
+    ret
+
+    .section .wowthk$aa,"xr",discard,thunk
+    .globl thunk
+    .p2align 2
+thunk:
+    mov w0, #10
+    ret
+
+    .section .hybmp$x, "yi"
+    .symidx func
+    .symidx thunk
+    .word 1
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mstorsjo wrote:

A comment with what the `.word 1` means (the thunk type) would be good, maybe just `# entry thunk` on the same line.

https://github.com/llvm/llvm-project/pull/88132