| ; 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: %[[SP:.*]] = load i8*, i8** @__safestack_unsafe_stack_ptr |
| ; CHECK-NEXT: %[[DYNPTR:.*]] = alloca i8* |
| ; 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:.*]] = bitcast i8* %[[INTTOPTR]] 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) |
| ; CHECK-NEXT: store i8* %[[SP:.*]], i8** @__safestack_unsafe_stack_ptr |
| ret i32 0 |
| } |
| |
| declare i32 @_setjmp(%struct.__jmp_buf_tag*) |
| declare void @funcall(i32*) |