| // Copyright 2024 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <lib/arch/asm.h> |
| |
| // We need an assembly function that uses .prologue.fp/.epilogue.fp to test |
| // that our assembly implementations for prologue/epilogue maintain ABI |
| // constraints for the various platforms. `asm_func` and its callee `foo` take |
| // no arguments, but return values in registers according to the architecture's |
| // calling convention. |
| .function CallerWithAsmPrologue, global |
| .prologue.fp |
| #if __has_feature(shadow_call_stack) |
| .prologue.shadow_call_sp |
| #endif |
| |
| #if defined(__aarch64__) |
| bl CalledFromAsmWithPrologue |
| #elif defined(__riscv) || defined(__x86_64__) || defined(__i386__) |
| call CalledFromAsmWithPrologue |
| #else |
| #error "unsupported machine" |
| #endif |
| |
| #if __has_feature(shadow_call_stack) |
| .epilogue.shadow_call_sp |
| #endif |
| .epilogue.fp |
| ret |
| .end_function |
