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# REQUIRES: x86
# RUN: llvm-mc -triple x86_64-windows-msvc %s -filetype=obj -o %t.obj
# RUN: lld-link %t.obj -guard:cf,nolongjmp -out:%t.exe -opt:noref -entry:main
# RUN: llvm-readobj --file-headers --coff-load-config %t.exe | FileCheck %s --check-prefix=CHECK-NOGC
# RUN: lld-link %t.obj -guard:cf,nolongjmp -out:%t.exe -opt:noref -entry:main -debug:dwarf
# RUN: llvm-readobj --file-headers --coff-load-config %t.exe | FileCheck %s --check-prefix=CHECK-NOGC
# RUN: lld-link %t.obj -guard:cf,nolongjmp -out:%t.exe -opt:ref -entry:main
# RUN: llvm-readobj --file-headers --coff-load-config %t.exe | FileCheck %s --check-prefix=CHECK-GC
# This assembly is meant to mimic what CL emits for this kind of C code when
# /Gw (-fdata-sections) is enabled:
# int f() { return 42; }
# int g() { return 13; }
# int (*fp1)() = &f;
# int (*fp2)() = &g;
# int main() {
# return fp1();
# }
# Compile with 'cl -c -guard:cf -Gw -O1' and note the two associative .gfids$y
# sections.
# Expect 3 entries: main, f, and g.
# CHECK-NOGC: ImageBase: 0x140000000
# CHECK-NOGC: LoadConfig [
# CHECK-NOGC: SEHandlerTable: 0x0
# CHECK-NOGC: SEHandlerCount: 0
# CHECK-NOGC: GuardCFCheckFunction: 0x0
# CHECK-NOGC: GuardCFCheckDispatch: 0x0
# CHECK-NOGC: GuardCFFunctionTable: 0x14000{{.*}}
# CHECK-NOGC: GuardCFFunctionCount: 3
# CHECK-NOGC: GuardFlags [ (0x500)
# CHECK-NOGC: CF_FUNCTION_TABLE_PRESENT (0x400)
# CHECK-NOGC: CF_INSTRUMENTED (0x100)
# CHECK-NOGC: ]
# CHECK-NOGC: GuardAddressTakenIatEntryTable: 0x0
# CHECK-NOGC: GuardAddressTakenIatEntryCount: 0
# CHECK-NOGC: GuardLongJumpTargetTable: 0x0
# CHECK-NOGC: GuardLongJumpTargetCount: 0
# CHECK-NOGC: ]
# CHECK-NOGC: GuardFidTable [
# CHECK-NOGC-NEXT: 0x14000{{.*}}
# CHECK-NOGC-NEXT: 0x14000{{.*}}
# CHECK-NOGC-NEXT: 0x14000{{.*}}
# CHECK-NOGC-NEXT: ]
# Expect 2 entries: main and f. fp2 was discarded, so g was only used as a
# direct call target.
# CHECK-GC: ImageBase: 0x140000000
# CHECK-GC: LoadConfig [
# CHECK-GC: SEHandlerTable: 0x0
# CHECK-GC: SEHandlerCount: 0
# CHECK-GC: GuardCFCheckFunction: 0x0
# CHECK-GC: GuardCFCheckDispatch: 0x0
# CHECK-GC: GuardCFFunctionTable: 0x14000{{.*}}
# CHECK-GC: GuardCFFunctionCount: 2
# CHECK-GC: GuardFlags [ (0x500)
# CHECK-GC: CF_FUNCTION_TABLE_PRESENT (0x400)
# CHECK-GC: CF_INSTRUMENTED (0x100)
# CHECK-GC: ]
# CHECK-GC: GuardAddressTakenIatEntryTable: 0x0
# CHECK-GC: GuardAddressTakenIatEntryCount: 0
# CHECK-GC: GuardLongJumpTargetTable: 0x0
# CHECK-GC: GuardLongJumpTargetCount: 0
# CHECK-GC: ]
# CHECK-GC: GuardFidTable [
# CHECK-GC-NEXT: 0x14000{{.*}}
# CHECK-GC-NEXT: 0x14000{{.*}}
# CHECK-GC-NEXT: ]
# We need @feat.00 to have 0x800 to indicate .gfids are present.
.def @feat.00;
.scl 3;
.type 0;
.endef
.globl @feat.00
@feat.00 = 0x801
.def main;
.scl 2;
.type 32;
.endef
.section .text,"xr",one_only,main
.globl main
main:
# Call g directly so that it is not dead stripped.
callq g
rex64 jmpq *fp1(%rip)
.def f;
.scl 3;
.type 32;
.endef
.section .text,"xr",one_only,f
f:
movl $42, %eax
retq
.section .data,"dw",one_only,fp1
.globl fp1
fp1:
.quad f
.section .gfids$y,"dr",associative,fp1
.symidx f
# Section GC will remove the following, so 'g' should not be present in the
# guard fid table.
.def g;
.scl 3;
.type 32;
.endef
.section .text,"xr",one_only,g
g:
movl $13, %eax
retq
.section .data,"dw",one_only,fp2
.globl fp2
fp2:
.quad g
.section .gfids$y,"dr",associative,fp2
.symidx g
.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 128, 1, 0
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