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