| //@ add-minicore | |
| //@ revisions: x86_64 i686 aarch64 | |
| //@ assembly-output: emit-asm | |
| //@[x86_64] compile-flags: --target x86_64-unknown-linux-gnu -C llvm-args=-x86-asm-syntax=intel | |
| //@[x86_64] needs-llvm-components: x86 | |
| //@[i686] compile-flags: --target i686-unknown-linux-gnu -C llvm-args=-x86-asm-syntax=intel | |
| //@[i686] needs-llvm-components: x86 | |
| //@[aarch64] compile-flags: --target aarch64-unknown-linux-gnu | |
| //@[aarch64] needs-llvm-components: aarch64 | |
| #![feature(no_core, lang_items)] | |
| #![crate_type = "lib"] | |
| #![no_core] | |
| extern crate minicore; | |
| use minicore::*; | |
| // Check that inline-asm stack probes are generated correctly. | |
| // To avoid making this test fragile to slight asm changes, | |
| // we only check that the stack pointer is decremented by a page at a time, | |
| // instead of matching the whole probe sequence. | |
| // CHECK-LABEL: small_stack_probe: | |
| #[no_mangle] | |
| pub fn small_stack_probe(x: u8, f: fn(&mut [u8; 8192])) { | |
| // CHECK-NOT: __rust_probestack | |
| // x86_64: sub rsp, 4096 | |
| // i686: sub esp, 4096 | |
| // aarch64: sub sp, sp, #1, lsl #12 | |
| f(&mut [x; 8192]); | |
| } | |
| // CHECK-LABEL: big_stack_probe: | |
| #[no_mangle] | |
| pub fn big_stack_probe(x: u8, f: fn(&[u8; 65536])) { | |
| // CHECK-NOT: __rust_probestack | |
| // x86_64: sub rsp, 4096 | |
| // i686: sub esp, 4096 | |
| // aarch64: sub sp, sp, #1, lsl #12 | |
| f(&mut [x; 65536]); | |
| } |