| //@ add-core-stubs |
| //@ 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]); |
| } |
