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/*
* Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __ASM_MACROS_COMMON_S__
#define __ASM_MACROS_COMMON_S__
#include <arch.h>
/*
* This macro is used to create a function label and place the
* code into a separate text section based on the function name
* to enable elimination of unused code during linking
*/
.macro func _name
.section .text.\_name, "ax"
.type \_name, %function
.func \_name
\_name:
.endm
/*
* This macro is used to mark the end of a function.
*/
.macro endfunc _name
.endfunc
.size \_name, . - \_name
.endm
/*
* Theses macros are used to create function labels for deprecated
* APIs. If ERROR_DEPRECATED is non zero, the callers of these APIs
* will fail to link and cause build failure.
*/
#if ERROR_DEPRECATED
.macro func_deprecated _name
func deprecated\_name
.endm
.macro endfunc_deprecated _name
endfunc deprecated\_name
.endm
#else
.macro func_deprecated _name
func \_name
.endm
.macro endfunc_deprecated _name
endfunc \_name
.endm
#endif
/*
* Helper assembler macro to count trailing zeros. The output is
* populated in the `TZ_COUNT` symbol.
*/
.macro count_tz _value, _tz_count
.if \_value
count_tz "(\_value >> 1)", "(\_tz_count + 1)"
.else
.equ TZ_COUNT, (\_tz_count - 1)
.endif
.endm
/*
* This macro declares an array of 1 or more stacks, properly
* aligned and in the requested section
*/
#define DEFAULT_STACK_ALIGN (1 << 6) /* In case the caller doesnt provide alignment */
.macro declare_stack _name, _section, _size, _count, _align=DEFAULT_STACK_ALIGN
count_tz \_align, 0
.if (\_align - (1 << TZ_COUNT))
.error "Incorrect stack alignment specified (Must be a power of 2)."
.endif
.if ((\_size & ((1 << TZ_COUNT) - 1)) <> 0)
.error "Stack size not correctly aligned"
.endif
.section \_section, "aw", %nobits
.align TZ_COUNT
\_name:
.space ((\_count) * (\_size)), 0
.endm
#endif /* __ASM_MACROS_COMMON_S__ */