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https://github.com/capstone-engine/llvm-capstone.git
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57 lines
1.7 KiB
ArmAsm
57 lines
1.7 KiB
ArmAsm
# REQUIRES: target={{x86_64-.+-linux-gnu}}
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# RUN: %{build} -no-pie
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# RUN: %{run}
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# The following assembly is a translation of this code:
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#
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# _Unwind_Reason_Code callback(int, _Unwind_Action, long unsigned int,
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# _Unwind_Exception*, _Unwind_Context*, void*) {
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# return _Unwind_Reason_Code(0);
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# }
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#
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# int main() {
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# asm(".cfi_remember_state\n\t");
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# _Unwind_Exception exc;
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# _Unwind_ForcedUnwind(&exc, callback, 0);
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# asm(".cfi_restore_state\n\t");
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# }
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#
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# When unwinding, the CFI parser will stop parsing opcodes after the current PC,
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# so in this case the DW_CFA_restore_state opcode will never be processed and,
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# if the library doesn't clean up properly, the store allocated by
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# DW_CFA_remember_state will be leaked.
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#
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# This test will fail when linked with an asan-enabled libunwind if the
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# remembered state is leaked.
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SIZEOF_UNWIND_EXCEPTION = 32
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.text
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callback:
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xorl %eax, %eax
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retq
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.globl main # -- Begin function main
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.p2align 4, 0x90
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.type main,@function
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main: # @main
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.cfi_startproc
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subq $8, %rsp # Adjust stack alignment
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subq $SIZEOF_UNWIND_EXCEPTION, %rsp
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.cfi_def_cfa_offset 48
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.cfi_remember_state
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movq %rsp, %rdi
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movabsq $callback, %rsi
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xorl %edx, %edx
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callq _Unwind_ForcedUnwind
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.cfi_restore_state
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xorl %eax, %eax
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addq $SIZEOF_UNWIND_EXCEPTION, %rsp
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addq $8, %rsp # Undo stack alignment adjustment
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.cfi_def_cfa_offset 8
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retq
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.Lfunc_end1:
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.size main, .Lfunc_end1-main
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.cfi_endproc
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# -- End function
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