derek.holloway
7502bf64a4
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39 lines
971 B
ArmAsm
39 lines
971 B
ArmAsm
## Check that llvm-bolt avoids optimization of functions referenced from
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## __rseq_cs section, i.e. containing critical sections and abort handlers used
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## by restartable sequences in tcmalloc.
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# RUN: %clang %cflags %s -o %t -nostdlib -no-pie -Wl,-q
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# RUN: llvm-bolt %t -o %t.bolt --print-cfg 2>&1 | FileCheck %s
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# RUN: %clang %cflags %s -o %t.pie -nostdlib -pie -Wl,-q
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# RUN: llvm-bolt %t.pie -o %t.pie.bolt 2>&1 | FileCheck %s
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# CHECK: restartable sequence reference detected in _start
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# CHECK: restartable sequence reference detected in __rseq_abort
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## Force relocations against .text
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.text
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.reloc 0, R_X86_64_NONE
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.global _start
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.type _start, %function
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_start:
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pushq %rbp
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mov %rsp, %rbp
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.L1:
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pop %rbp
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.L2:
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retq
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.size _start, .-_start
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.section __rseq_abort, "ax"
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## Signature for rseq abort IP. Unmarked in the symbol table.
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.byte 0x0f, 0x1f, 0x05
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.long 0x42424242
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.L3:
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jmp .L2
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.section __rseq_cs, "aw"
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.balign 32
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.quad .L1
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.quad .L3
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