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b10de1bbaa
Add StackProtector to SafeStack. This adds limited protection against data corruption in the caller frame. Current implementation treats all stack protector levels as -fstack-protector-all. llvm-svn: 266004
28 lines
1.0 KiB
LLVM
28 lines
1.0 KiB
LLVM
; Test codegen pipeline for SafeStack + StackProtector combination.
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; RUN: llc -mtriple=i386-linux < %s -o - | FileCheck --check-prefix=LINUX-I386 %s
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; RUN: llc -mtriple=x86_64-linux < %s -o - | FileCheck --check-prefix=LINUX-X64 %s
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define void @_Z1fv() safestack sspreq {
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entry:
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%x = alloca i32, align 4
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%0 = bitcast i32* %x to i8*
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call void @_Z7CapturePi(i32* nonnull %x)
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ret void
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}
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declare void @_Z7CapturePi(i32*)
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; LINUX-X64-DAG: movq __safestack_unsafe_stack_ptr@GOTTPOFF(%rip), %[[A:.*]]
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; LINUX-X64-DAG: movq %fs:(%[[A]]), %[[B:.*]]
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; LINUX-X64-DAG: movq %fs:40, %[[COOKIE:.*]]
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; LINUX-X64-DAG: leaq -16(%[[B]]), %[[C:.*]]
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; LINUX-X64-DAG: movq %[[C]], %fs:(%[[A]])
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; LINUX-X64-DAG: movq %[[COOKIE]], -8(%[[B]])
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; LINUX-I386-DAG: movl __safestack_unsafe_stack_ptr@INDNTPOFF, %[[A:.*]]
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; LINUX-I386-DAG: movl %gs:(%[[A]]), %[[B:.*]]
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; LINUX-I386-DAG: movl %gs:20, %[[COOKIE:.*]]
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; LINUX-I386-DAG: leal -16(%[[B]]), %[[C:.*]]
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; LINUX-I386-DAG: movl %[[C]], %gs:(%[[A]])
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; LINUX-I386-DAG: movl %[[COOKIE]], -4(%[[B]])
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