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99 lines
2.7 KiB
99 lines
2.7 KiB
# REQUIRES: x86
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# RUN: llvm-mc -triple x86_64-windows-msvc %s -filetype=obj -o %t.obj
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# RUN: lld-link %t.obj -guard:nolongjmp -out:%t.exe -opt:icf -entry:main
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# RUN: llvm-readobj --file-headers --coff-load-config %t.exe | FileCheck %s --check-prefix=CHECK
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# This assembly is meant to mimic what CL emits for this kind of C code:
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# int icf1() { return 42; }
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# int icf2() { return 42; }
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# int (*fp1)() = &icf1;
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# int (*fp2)() = &icf2;
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# int main() {
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# return fp1();
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# return fp2();
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# }
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# 'icf1' and 'icf2' are address taken, but should be merged into one entry.
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# There are two entries in the table because 'main' is included.
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# CHECK: ImageBase: 0x140000000
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# CHECK: LoadConfig [
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# CHECK: SEHandlerTable: 0x0
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# CHECK: SEHandlerCount: 0
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# CHECK: GuardCFCheckFunction: 0x0
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# CHECK: GuardCFCheckDispatch: 0x0
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# CHECK: GuardCFFunctionTable: 0x14000{{.*}}
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# CHECK: GuardCFFunctionCount: 2
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# CHECK: GuardFlags: 0x500
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# CHECK: GuardAddressTakenIatEntryTable: 0x0
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# CHECK: GuardAddressTakenIatEntryCount: 0
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# CHECK: GuardLongJumpTargetTable: 0x0
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# CHECK: GuardLongJumpTargetCount: 0
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# CHECK: ]
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# CHECK: GuardFidTable [
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# CHECK-NEXT: 0x14000{{.*}}
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# CHECK-NEXT: 0x14000{{.*}}
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# CHECK-NEXT: ]
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# There should be no .gfids section in the output exectuable when we link with
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# -guard:cf or with no -guard:cf/nolongjmp flag.
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# RUN: llvm-readobj --sections %t.exe | FileCheck %s --check-prefix NOGFIDSEC
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# RUN: lld-link %t.obj -out:%t.exe -opt:icf -entry:main
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# RUN: llvm-readobj --sections %t.exe | FileCheck %s --check-prefix NOGFIDSEC
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# NOGFIDSEC: Sections [
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# NOGFIDSEC: Section {
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# NOGFIDSEC: Name: .text
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# NOGFIDSEC-NOT: Name: .gfids
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# Indicate that gfids are present.
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.def @feat.00; .scl 3; .type 0; .endef
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.globl @feat.00
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@feat.00 = 0x800
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.def icf1; .scl 2; .type 32; .endef
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.section .text,"xr",one_only,icf1
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.global icf1
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icf1:
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movl $42, %eax
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retq
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.def icf2; .scl 2; .type 32; .endef
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.section .text,"xr",one_only,icf2
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.global icf2
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icf2:
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movl $42, %eax
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retq
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# Take their two addresses.
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.data
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.globl fp1
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fp1:
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.quad icf1
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.globl fp2
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fp2:
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.quad icf2
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.section .gfids$y,"dr"
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.symidx icf1
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.symidx icf2
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.def main; .scl 2; .type 32; .endef
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.section .text,"xr",one_only,main
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.globl main
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main:
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callq *fp1(%rip)
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callq *fp2(%rip)
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xor %eax, %eax
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retq
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.section .rdata,"dr"
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.globl _load_config_used
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_load_config_used:
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.long 256
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.fill 124, 1, 0
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.quad __guard_fids_table
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.quad __guard_fids_count
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.long __guard_flags
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.fill 128, 1, 0
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