1// Copyright 2016 The Fuchsia Authors 2// Copyright (c) 2008-2013 Travis Geiselbrecht 3// 4// Use of this source code is governed by a MIT-style 5// license that can be found in the LICENSE file or at 6// https://opensource.org/licenses/MIT 7 8#pragma once 9 10#ifndef __ASSEMBLER__ 11#error for assembly files only 12#endif 13 14#include <arch/asm_macros.h> 15 16// for functions that don't have an "end" or don't want .cfi_startproc 17#define LOCAL_FUNCTION_LABEL(x) .type x,STT_FUNC; x: 18#define FUNCTION_LABEL(x) .global x; .hidden x; LOCAL_FUNCTION_LABEL(x) 19 20#define LOCAL_FUNCTION(x) LOCAL_FUNCTION_LABEL(x) .cfi_startproc 21#define FUNCTION(x) .global x; .hidden x; LOCAL_FUNCTION(x) 22 23// for local or global functions 24#define END_FUNCTION(x) .cfi_endproc; .size x, . - x 25 26#define LOCAL_DATA(x) .type x,STT_OBJECT; x: 27#define DATA(x) .global x; .hidden x; LOCAL_DATA(x) 28 29// for local or global data 30#define END_DATA(x) .size x, . - x 31 32// Some DWARF constants for CFI description. 33#define DW_CFA_val_expression 0x16 34#define DW_OP_lit0 0x30 35 36.macro cfi_register_is_zero reg 37 .cfi_escape DW_CFA_val_expression, \reg, 1, DW_OP_lit0 38.endm 39 40// We want .debug_frame not .eh_frame. 41// WARNING: This is a subtle side-effect of including this file. Heads up! 42.cfi_sections .debug_frame 43