154 lines
6.8 KiB
LLVM
154 lines
6.8 KiB
LLVM
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; RUN: llc -verify-machineinstrs -mtriple=x86_64-unknown -mattr=+lvi-load-hardening -mattr=+lvi-cfi -x86-experimental-lvi-inline-asm-hardening < %s -o %t.out 2> %t.err
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; RUN: FileCheck %s --check-prefix=X86 < %t.out
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; RUN: FileCheck %s --check-prefix=WARN < %t.err
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; Test module-level assembly
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module asm "pop %rbx"
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module asm "ret"
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; X86: popq %rbx
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; X86-NEXT: lfence
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; X86-NEXT: shlq $0, (%rsp)
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; X86-NEXT: lfence
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; X86-NEXT: retq
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; Function Attrs: noinline nounwind optnone uwtable
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define dso_local void @test_inline_asm() {
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entry:
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; X86-LABEL: test_inline_asm:
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call void asm sideeffect "mov 0x3fed(%rip),%rax", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: movq 16365(%rip), %rax
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; X86-NEXT: lfence
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call void asm sideeffect "movdqa 0x0(%rip),%xmm0", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: movdqa (%rip), %xmm0
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; X86-NEXT: lfence
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call void asm sideeffect "movslq 0x3e5d(%rip),%rbx", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: movslq 15965(%rip), %rbx
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; X86-NEXT: lfence
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call void asm sideeffect "mov (%r12,%rax,8),%rax", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: movq (%r12,%rax,8), %rax
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; X86-NEXT: lfence
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call void asm sideeffect "movq (24)(%rsi), %r11", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: movq 24(%rsi), %r11
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; X86-NEXT: lfence
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call void asm sideeffect "cmove %r12,%rax", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: cmoveq %r12, %rax
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; X86-NOT: lfence
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call void asm sideeffect "cmove (%r12),%rax", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: cmoveq (%r12), %rax
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; X86-NEXT: lfence
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call void asm sideeffect "pop %rbx", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: popq %rbx
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; X86-NEXT: lfence
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call void asm sideeffect "popq %rbx", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: popq %rbx
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; X86-NEXT: lfence
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call void asm sideeffect "xchg (%r12),%rax", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: xchgq %rax, (%r12)
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; X86-NEXT: lfence
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call void asm sideeffect "cmpxchg %r12,(%rax)", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: cmpxchgq %r12, (%rax)
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; X86-NEXT: lfence
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call void asm sideeffect "vpxor (%rcx,%rdx,1),%ymm1,%ymm0", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: vpxor (%rcx,%rdx), %ymm1, %ymm0
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; X86-NEXT: lfence
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call void asm sideeffect "vpmuludq 0x20(%rsi),%ymm0,%ymm12", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: vpmuludq 32(%rsi), %ymm0, %ymm12
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; X86-NEXT: lfence
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call void asm sideeffect "vpexpandq 0x40(%rdi),%zmm8{%k2}{z}", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: vpexpandq 64(%rdi), %zmm8 {%k2} {z}
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; X86-NEXT: lfence
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call void asm sideeffect "addq (%r12),%rax", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: addq (%r12), %rax
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; X86-NEXT: lfence
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call void asm sideeffect "subq Lpoly+0(%rip), %rax", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: subq Lpoly+0(%rip), %rax
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; X86-NEXT: lfence
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call void asm sideeffect "adcq %r12,(%rax)", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: adcq %r12, (%rax)
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; X86-NEXT: lfence
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call void asm sideeffect "negq (%rax)", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: negq (%rax)
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; X86-NEXT: lfence
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call void asm sideeffect "incq %rax", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: incq %rax
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; X86-NOT: lfence
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call void asm sideeffect "mulq (%rax)", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: mulq (%rax)
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; X86-NEXT: lfence
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call void asm sideeffect "imulq (%rax),%rdx", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: imulq (%rax), %rdx
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; X86-NEXT: lfence
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call void asm sideeffect "shlq $$1,(%rax)", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: shlq (%rax)
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; X86-NEXT: lfence
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call void asm sideeffect "shrq $$1,(%rax)", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: shrq (%rax)
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; X86-NEXT: lfence
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call void asm sideeffect "repz cmpsb %es:(%rdi),%ds:(%rsi)", "~{dirflag},~{fpsr},~{flags}"() #1
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; WARN: warning: Instruction may be vulnerable to LVI
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; WARN-NEXT: repz cmpsb %es:(%rdi),%ds:(%rsi)
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; WARN-NEXT: ^
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; WARN-NEXT: note: See https://software.intel.com/security-software-guidance/insights/deep-dive-load-value-injection#specialinstructions for more information
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; X86: rep cmpsb %es:(%rdi), %ds:(%rsi)
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; X86-NOT: lfence
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call void asm sideeffect "repnz scasb", "~{dirflag},~{fpsr},~{flags}"() #1
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; WARN: warning: Instruction may be vulnerable to LVI
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; WARN-NEXT: repnz scasb
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; WARN-NEXT: ^
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; WARN-NEXT: note: See https://software.intel.com/security-software-guidance/insights/deep-dive-load-value-injection#specialinstructions for more information
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; X86: repne scasb %es:(%rdi), %al
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; X86-NOT: lfence
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call void asm sideeffect "repnz", ""() #1
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; WARN: warning: Instruction may be vulnerable to LVI
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; WARN-NEXT: repnz
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; WARN-NEXT: ^
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; WARN-NEXT: note: See https://software.intel.com/security-software-guidance/insights/deep-dive-load-value-injection#specialinstructions for more information
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call void asm sideeffect "pinsrw $$0x6,(%eax),%xmm0", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: pinsrw $6, (%eax), %xmm0
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; X86-NEXT: lfence
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call void asm sideeffect "ret", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: shlq $0, (%rsp)
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; X86-NEXT: lfence
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; X86-NEXT: retq
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; X86-NOT: lfence
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call void asm sideeffect "ret $$8", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: shlq $0, (%rsp)
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; X86-NEXT: lfence
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; X86-NEXT: retq $8
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; X86-NOT: lfence
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call void asm sideeffect "jmpq *(%rdx)", "~{dirflag},~{fpsr},~{flags}"() #1
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; WARN: warning: Instruction may be vulnerable to LVI
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; WARN-NEXT: jmpq *(%rdx)
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; WARN-NEXT: ^
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; WARN-NEXT: note: See https://software.intel.com/security-software-guidance/insights/deep-dive-load-value-injection#specialinstructions for more information
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; X86: jmpq *(%rdx)
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; X86-NOT: lfence
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call void asm sideeffect "jmpq *0x100(%rdx)", "~{dirflag},~{fpsr},~{flags}"() #1
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; WARN: warning: Instruction may be vulnerable to LVI
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; WARN-NEXT: jmpq *0x100(%rdx)
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; WARN-NEXT: ^
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; WARN-NEXT: note: See https://software.intel.com/security-software-guidance/insights/deep-dive-load-value-injection#specialinstructions for more information
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; X86: jmpq *256(%rdx)
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; X86-NOT: lfence
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call void asm sideeffect "callq *200(%rdx)", "~{dirflag},~{fpsr},~{flags}"() #1
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; WARN: warning: Instruction may be vulnerable to LVI
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; WARN-NEXT: callq *200(%rdx)
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; WARN-NEXT: ^
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; WARN-NEXT: note: See https://software.intel.com/security-software-guidance/insights/deep-dive-load-value-injection#specialinstructions for more information
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; X86: callq *200(%rdx)
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; X86-NOT: lfence
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call void asm sideeffect "fldt 0x8(%rbp)", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: fldt 8(%rbp)
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; X86-NEXT: lfence
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call void asm sideeffect "fld %st(0)", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: fld %st(0)
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; X86-NOT: lfence
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; Test assembler macros
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call void asm sideeffect ".macro mplus1 x\0Aincq (\5Cx)\0A.endm\0Amplus1 %rcx", "~{dirflag},~{fpsr},~{flags}"() #1
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; X86: incq (%rcx)
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; X86-NEXT: lfence
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ret void
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}
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attributes #1 = { nounwind }
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