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- ; RUN: opt -safe-stack -S -mtriple=i386-pc-linux-gnu < %s -o - | FileCheck %s
- ; RUN: opt -safe-stack -S -mtriple=x86_64-pc-linux-gnu < %s -o - | FileCheck %s
- %struct.__jmp_buf_tag = type { [8 x i64], i32, %struct.__sigset_t }
- %struct.__sigset_t = type { [16 x i64] }
- @.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1
- @buf = internal global [1 x %struct.__jmp_buf_tag] zeroinitializer, align 16
- ; setjmp/longjmp test with dynamically sized array.
- ; Requires protector.
- ; CHECK: @foo(i32 %[[ARG:.*]])
- define i32 @foo(i32 %size) nounwind uwtable safestack {
- entry:
- ; CHECK: %[[DYNPTR:.*]] = alloca i8*
- ; CHECK-NEXT: %[[SP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr
- ; CHECK-NEXT: store i8* %[[SP]], i8** %[[DYNPTR]]
- ; CHECK-NEXT: %[[ZEXT:.*]] = zext i32 %[[ARG]] to i64
- ; CHECK-NEXT: %[[MUL:.*]] = mul i64 %[[ZEXT]], 4
- ; CHECK-NEXT: %[[SP2:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr
- ; CHECK-NEXT: %[[PTRTOINT:.*]] = ptrtoint i8* %[[SP2]] to i64
- ; CHECK-NEXT: %[[SUB:.*]] = sub i64 %[[PTRTOINT]], %[[MUL]]
- ; CHECK-NEXT: %[[AND:.*]] = and i64 %[[SUB]], -16
- ; CHECK-NEXT: %[[INTTOPTR:.*]] = inttoptr i64 %[[AND]] to i8*
- ; CHECK-NEXT: store i8* %[[INTTOPTR]], i8** @__safestack_unsafe_stack_ptr
- ; CHECK-NEXT: store i8* %[[INTTOPTR]], i8** %unsafe_stack_dynamic_ptr
- ; CHECK-NEXT: %[[ALLOCA:.*]] = inttoptr i64 %[[SUB]] to i32*
- %a = alloca i32, i32 %size
- ; CHECK: setjmp
- ; CHECK-NEXT: %[[LOAD:.*]] = load i8*, i8** %[[DYNPTR]]
- ; CHECK-NEXT: store i8* %[[LOAD]], i8** @__safestack_unsafe_stack_ptr
- %call = call i32 @_setjmp(%struct.__jmp_buf_tag* getelementptr inbounds ([1 x %struct.__jmp_buf_tag], [1 x %struct.__jmp_buf_tag]* @buf, i32 0, i32 0)) returns_twice
- ; CHECK: call void @funcall(i32* %[[ALLOCA]])
- call void @funcall(i32* %a)
- ret i32 0
- }
- declare i32 @_setjmp(%struct.__jmp_buf_tag*)
- declare void @funcall(i32*)
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