forked from OSchip/llvm-project
104 lines
2.7 KiB
ArmAsm
104 lines
2.7 KiB
ArmAsm
# RUN: llvm-mc -triple x86_64-windows-msvc %s -filetype=obj -o %t.obj
|
|
# RUN: lld-link %t.obj -guard:cf -out:%t.exe -entry:main
|
|
# RUN: llvm-readobj -file-headers -coff-load-config %t.exe | FileCheck %s
|
|
|
|
# CHECK: ImageBase: 0x140000000
|
|
# CHECK: LoadConfig [
|
|
# CHECK: SEHandlerTable: 0x0
|
|
# CHECK: SEHandlerCount: 0
|
|
# CHECK: GuardCFCheckFunction: 0x0
|
|
# CHECK: GuardCFCheckDispatch: 0x0
|
|
# CHECK: GuardCFFunctionTable: 0x14000{{.*}}
|
|
# CHECK: GuardCFFunctionCount: 1
|
|
# CHECK: GuardFlags: 0x10500
|
|
# CHECK: GuardAddressTakenIatEntryTable: 0x0
|
|
# CHECK: GuardAddressTakenIatEntryCount: 0
|
|
# CHECK: GuardLongJumpTargetTable: 0x14000{{.*}}
|
|
# CHECK: GuardLongJumpTargetCount: 1
|
|
# CHECK: ]
|
|
# CHECK: GuardLJmpTable [
|
|
# CHECK-NEXT: 0x14000{{.*}}
|
|
# CHECK-NEXT: ]
|
|
|
|
|
|
# This assembly is reduced from C code like:
|
|
# #include <setjmp.h>
|
|
# jmp_buf buf;
|
|
# void g() { longjmp(buf, 1); }
|
|
# void f() {
|
|
# if (setjmp(buf))
|
|
# return;
|
|
# g();
|
|
# }
|
|
# int main() { f(); }
|
|
|
|
# We need @feat.00 to have 0x800 to indicate /guard:cf.
|
|
.def @feat.00;
|
|
.scl 3;
|
|
.type 0;
|
|
.endef
|
|
.globl @feat.00
|
|
@feat.00 = 0x801
|
|
.def f; .scl 2; .type 32; .endef
|
|
.globl f
|
|
f:
|
|
pushq %rbp
|
|
subq $32, %rsp
|
|
leaq 32(%rsp), %rbp
|
|
leaq buf(%rip), %rcx
|
|
leaq -32(%rbp), %rdx
|
|
callq _setjmp
|
|
.Lljmp1:
|
|
testl %eax, %eax
|
|
je .LBB1_1
|
|
addq $32, %rsp
|
|
popq %rbp
|
|
retq
|
|
.LBB1_1: # %if.end
|
|
leaq buf(%rip), %rcx
|
|
movl $1, %edx
|
|
callq longjmp
|
|
ud2
|
|
|
|
# Record the longjmp target.
|
|
.section .gljmp$y,"dr"
|
|
.symidx .Lljmp1
|
|
.text
|
|
|
|
# Provide setjmp/longjmp stubs.
|
|
.def _setjmp; .scl 2; .type 32; .endef
|
|
.globl _setjmp
|
|
_setjmp:
|
|
retq
|
|
|
|
.def longjmp; .scl 2; .type 32; .endef
|
|
.globl longjmp
|
|
longjmp:
|
|
retq
|
|
|
|
.def main; .scl 2; .type 32; .endef
|
|
.globl main # -- Begin function main
|
|
main: # @main
|
|
subq $40, %rsp
|
|
callq f
|
|
xorl %eax, %eax
|
|
addq $40, %rsp
|
|
retq
|
|
|
|
.comm buf,256,4 # @buf
|
|
|
|
.section .rdata,"dr"
|
|
.globl _load_config_used
|
|
_load_config_used:
|
|
.long 256
|
|
.fill 124, 1, 0
|
|
.quad __guard_fids_table
|
|
.quad __guard_fids_count
|
|
.long __guard_flags
|
|
.fill 12, 1, 0
|
|
.quad __guard_iat_table
|
|
.quad __guard_iat_count
|
|
.quad __guard_longjmp_table
|
|
.quad __guard_fids_count
|
|
.fill 84, 1, 0
|