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TheRock/compiler/amd-llvm/bolt/test/AArch64/pacret-cfi.s
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2026-09-02 16:34:47 -07:00

77 lines
2.4 KiB
ArmAsm

# Checking that .cfi-negate_ra_state directives are emitted in the same location as in the input in the case of no optimizations.
# The foo and bar functions are a pair, with the first signing the return address,
# and the second authenticating it. We have a tailcall between the two.
# This is testing that BOLT can handle functions starting in signed RA state.
# RUN: llvm-mc -filetype=obj -triple aarch64-unknown-unknown %s -o %t.o
# RUN: %clang %cflags %t.o -o %t.exe -Wl,-q
# RUN: llvm-bolt %t.exe -o %t.exe.bolt --no-threads --print-all | FileCheck %s --check-prefix=CHECK-BOLT
# Check that the negate-ra-state at the start of bar is not discarded.
# If it was discarded, PointerAuthCFIAnalyzer would report bar as having inconsistent RAStates.
# This is testing the handling of initialRAState on the BinaryFunction.
# CHECK-BOLT-NOT: BOLT-INFO: inconsistent RAStates in function foo
# CHECK-BOLT-NOT: BOLT-INFO: inconsistent RAStates in function bar
# Check that OpNegateRAState CFIs are generated correctly.
# CHECK-BOLT: Binary Function "foo" after pointer-auth-cfi-fixup {
# CHECK-BOLT: paciasp
# CHECK-BOLT-NEXT: OpNegateRAState
# CHECK-BOLT: DWARF CFI Instructions:
# CHECK-BOLT-NEXT: 0: OpNegateRAState
# CHECK-BOLT-NEXT: End of Function "foo"
# CHECK-BOLT: Binary Function "bar" after pointer-auth-cfi-fixup {
# CHECK-BOLT: OpNegateRAState
# CHECK-BOLT-NEXT: mov x1, #0x0
# CHECK-BOLT-NEXT: mov x1, #0x1
# CHECK-BOLT-NEXT: autiasp
# CHECK-BOLT-NEXT: OpNegateRAState
# CHECK-BOLT-NEXT: ret
# CHECK-BOLT: DWARF CFI Instructions:
# CHECK-BOLT-NEXT: 0: OpNegateRAState
# CHECK-BOLT-NEXT: 1: OpNegateRAState
# CHECK-BOLT-NEXT: End of Function "bar"
# End of negate-ra-state insertion logs for foo and bar.
# CHECK: Binary Function "_start" after pointer-auth-cfi-fixup {
# Check that the functions are in the new .text section
# RUN: llvm-objdump %t.exe.bolt -d -j .text | FileCheck %s --check-prefix=CHECK-OBJDUMP
# CHECK-OBJDUMP: <foo>:
# CHECK-OBJDUMP: <bar>:
.text
.globl foo
.p2align 2
.type foo,@function
foo:
.cfi_startproc
paciasp
.cfi_negate_ra_state
mov x1, #0
b bar
.cfi_endproc
.size foo, .-foo
.text
.globl bar
.p2align 2
.type bar,@function
bar:
.cfi_startproc
.cfi_negate_ra_state // Indicating that RA is signed from the start of bar.
mov x1, #0
mov x1, #1
autiasp
.cfi_negate_ra_state
ret
.cfi_endproc
.size bar, .-bar