From e586382febf7d03ac330595dcf578184fccbd971 Mon Sep 17 00:00:00 2001 From: Taiki Endo Date: Wed, 29 Jan 2025 02:14:25 +0900 Subject: Support clobber_abi in BPF inline assembly --- tests/codegen/asm/bpf-clobbers.rs | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 tests/codegen/asm/bpf-clobbers.rs (limited to 'tests/codegen') diff --git a/tests/codegen/asm/bpf-clobbers.rs b/tests/codegen/asm/bpf-clobbers.rs new file mode 100644 index 00000000000..1117549b1ec --- /dev/null +++ b/tests/codegen/asm/bpf-clobbers.rs @@ -0,0 +1,31 @@ +//@ add-core-stubs +//@ compile-flags: --target bpfel-unknown-none +//@ needs-llvm-components: bpf + +#![crate_type = "rlib"] +#![feature(no_core, asm_experimental_arch)] +#![no_core] + +extern crate minicore; +use minicore::*; + +// CHECK-LABEL: @flags_clobber +// CHECK: call void asm sideeffect "", ""() +#[no_mangle] +pub unsafe fn flags_clobber() { + asm!("", options(nostack, nomem)); +} + +// CHECK-LABEL: @no_clobber +// CHECK: call void asm sideeffect "", ""() +#[no_mangle] +pub unsafe fn no_clobber() { + asm!("", options(nostack, nomem, preserves_flags)); +} + +// CHECK-LABEL: @clobber_abi +// CHECK: asm sideeffect "", "={r0},={r1},={r2},={r3},={r4},={r5}"() +#[no_mangle] +pub unsafe fn clobber_abi() { + asm!("", clobber_abi("C"), options(nostack, nomem, preserves_flags)); +} -- cgit 1.4.1-3-g733a5