| // Copyright 2017 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. |
| |
| #pragma once |
| |
| #ifndef __has_feature |
| #define __has_feature(x) 0 |
| #endif |
| |
| // clang-format off |
| #define ENTRY(name) \ |
| .globl name; \ |
| .type name, %function; \ |
| name: \ |
| .cfi_startproc |
| // clang-format on |
| |
| #define END(name) \ |
| .cfi_endproc; \ |
| .size name, .- name |
| |
| // This copies the .type and .size info as well as the value. |
| #define ALIAS(old, new) \ |
| new = old; \ |
| .globl new |
| |
| #define WEAK_ALIAS(old, new) \ |
| new = old; \ |
| .weak new |
| |
| // See __asan_weak_alias in asan_impl.h. |
| #if __has_feature(address_sanitizer) |
| #define ASAN_WEAK_ALIAS(name) WEAK_ALIAS(name, __asan_##name) |
| #elif __has_feature(hwaddress_sanitizer) |
| #define ASAN_WEAK_ALIAS(name) WEAK_ALIAS(name, __hwasan_##name) |
| #else // !__has_feature(address_sanitizer) |
| #define ASAN_WEAK_ALIAS(name) // Don't define __asan_##name. |
| #endif // __has_feature(address_sanitizer) |
| |
| #ifdef __aarch64__ // clang-format off |
| .macro push_regs reg1, reg2 |
| stp \reg1, \reg2, [ sp, # - 16 ]! |
| .cfi_adjust_cfa_offset 16 |
| .cfi_rel_offset \reg1, 0 |
| .cfi_rel_offset \reg2, 8 |
| .endm |
| |
| .macro pop_regs reg1, reg2 |
| ldp \reg1, \reg2, [sp], #16 |
| .cfi_adjust_cfa_offset - 16 |
| .cfi_same_value \reg1 |
| .cfi_same_value \reg2 |
| .endm |
| |
| .macro adr_global reg, symbol |
| #if __has_feature(hwaddress_sanitizer) |
| adrp \reg, :pg_hi21_nc:\symbol |
| movk \reg, #:prel_g3:\symbol+0x100000000 |
| add \reg, \reg, #:lo12:\symbol |
| #elif defined(__AARCH64_CMODEL_TINY__) |
| adr \reg, \symbol |
| #else |
| adrp \reg, \symbol |
| add \reg, \reg, #:lo12:\symbol |
| #endif |
| .endm // adr_global |
| |
| #endif // clang-format on |
| |
| #ifdef __x86_64__ // clang-format off |
| .macro push_reg reg |
| push \reg |
| .cfi_adjust_cfa_offset 8 |
| .cfi_rel_offset \reg, 0 |
| .endm |
| |
| .macro pop_reg reg |
| pop \reg |
| .cfi_adjust_cfa_offset - 8 |
| .cfi_same_value \reg |
| .endm |
| #endif // clang-format on |
