[lld] [lld][COFF] Support .pdata section on ARM64EC targets. (PR #72521)

[Martin Storsjö via llvm-commits]

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@@ -0,0 +1,132 @@
+REQUIRES: aarch64, x86
+RUN: split-file %s %t.dir && cd %t.dir
+
+Test handlign of hybrid .pdata section on ARM64EC target.
+
+RUN: llvm-mc -filetype=obj -triple=arm64-windows arm64-func-sym.s -o arm64-func-sym.obj
+RUN: llvm-mc -filetype=obj -triple=arm64ec-windows arm64ec-func-sym.s -o arm64ec-func-sym.obj
+RUN: llvm-mc -filetype=obj -triple=x86_64-windows x86_64-func-sym.s -o x86_64-func-sym.obj
+RUN: llvm-mc -filetype=obj -triple=arm64ec-windows %p/Inputs/loadconfig-arm64ec.s -o loadconfig-arm64ec.obj
+
+Only arm64ec code:
+
+RUN: lld-link -out:test1.dll -machine:arm64ec arm64ec-func-sym.obj loadconfig-arm64ec.obj -dll -noentry
+
+RUN: llvm-readobj --coff-load-config test1.dll | FileCheck -check-prefix=LOADCFG %s
+LOADCFG:      ExtraRFETable: 0x4000
+LOADCFG-NEXT: ExtraRFETableSize: 0x8
+
+RUN: llvm-readobj --headers test1.dll | FileCheck -check-prefix=NODIR %s
+NODIR: ExceptionTableSize: 0x0
+
+RUN: llvm-objdump -s --section=.pdata test1.dll | FileCheck -check-prefix=DATA %s
+DATA: 180004000 00100000 11000001
+
+Only x86_64 code:
+
+RUN: lld-link -out:test2.dll -machine:arm64ec x86_64-func-sym.obj loadconfig-arm64ec.obj -dll -noentry
+
+RUN: llvm-readobj --coff-load-config test2.dll | FileCheck -check-prefix=NOLOADCFG %s
+NOLOADCFG: ExtraRFETableSize: 0
----------------
mstorsjo wrote:

Because `FileCheck` only checks whether this matches a substring, this actually also would match a string with `ExtraRFETableSize: 0x42`. Here, it's probably simplest to make it check `ExtraRFETableSize: 0{{$}}` to force it to match the end of the line. Or make it check `0x0` if that's what it prints, since it doesn't seem like it prints leading zeros unnecessarily.

https://github.com/llvm/llvm-project/pull/72521