[lld] [lld][AArch64][ELF][PAC] Support AUTH relocations and AUTH ELF marking (PR #72714)

[Fangrui Song via llvm-commits]

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@@ -0,0 +1,66 @@
+// REQUIRES: aarch64
+
+// RUN: llvm-mc -filetype=obj -triple=aarch64 %p/Inputs/shared2.s -o %t.so.o
+// RUN: ld.lld -shared %t.so.o -soname=so -o %t.so
+// RUN: llvm-mc -filetype=obj -triple=aarch64 %s -o %t.o
+// RUN: ld.lld -pie -z nopack-relative-relocs %t.o %t.so -o %t2
+// RUN: llvm-readobj -r %t2 | FileCheck --check-prefix=UNPACKED %s
+
+// UNPACKED:          Section ({{.+}}) .rela.dyn {
+// UNPACKED-NEXT:       0x303C8 R_AARCH64_AUTH_RELATIVE - 0x1
+// UNPACKED-NEXT:       0x303E1 R_AARCH64_AUTH_RELATIVE - 0x2
+// UNPACKED-NEXT:       0x303D0 R_AARCH64_AUTH_ABS64 zed2 0x0
+// UNPACKED-NEXT:       0x303D8 R_AARCH64_AUTH_ABS64 bar2 0x0
+// UNPACKED-NEXT:     }
+
+// RUN: ld.lld -pie -z pack-relative-relocs %t.o %t.so -o %t2
+// RUN: llvm-readobj -S --dynamic-table %t2 | FileCheck --check-prefix=RELR-HEADERS %s
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MaskRay wrote:

We prefer `llvm-readelf -S -d ` for newer tests as the tabular output is easier to read.

https://github.com/llvm/llvm-project/pull/72714