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https://github.com/zephyrproject-rtos/zephyr
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58accba801
In order for better compiler support make sure that absolute symbol macros are specific for a supported compiler. As the patch modifies gen_config_abssym sources, at least, host/src/gen_config_abssym host tool needs rebuild. Change-Id: Iece19611e2410a9753e538c725c5c81a447bf978 Signed-off-by: Dmitriy Korovkin <dmitriy.korovkin@windriver.com>
79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
/* macros to generate absolute symbols for GCC */
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/*
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* Copyright (c) 2010, 2012-2014, Wind River Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _ABS_SYM_GCC_H_
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#define _ABS_SYM_GCC_H_
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/*
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* The file should not be included directly
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* Include toolchain.h instead
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*/
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/* create an extern reference to the absolute symbol */
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#define GEN_OFFSET_EXTERN(name) extern const char name[]
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#define GEN_ABS_SYM_BEGIN(name) \
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extern void name(void); \
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void name(void) \
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{
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#define GEN_ABS_SYM_END }
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#if defined(VXMICRO_ARCH_arm)
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/*
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* GNU/ARM backend does not have a proper operand modifier which does not
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* produces prefix # followed by value, such as %0 for PowerPC, Intel, and
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* MIPS. The workaround performed here is using %B0 which converts
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* the value to ~(value). Thus "n"(~(value)) is set in operand constraint
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* to output (value) in the ARM specific GEN_OFFSET macro.
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*/
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#define GEN_ABSOLUTE_SYM(name, value) \
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__asm__(".globl\t" #name "\n\t.equ\t" #name \
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",%B0" \
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"\n\t.type\t" #name ",%%object" : : "n"(~(value)))
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#elif defined(VXMICRO_ARCH_x86) || defined(VXMICRO_ARCH_arc)
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#define GEN_ABSOLUTE_SYM(name, value) \
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__asm__(".globl\t" #name "\n\t.equ\t" #name \
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",%c0" \
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"\n\t.type\t" #name ",@object" : : "n"(value))
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#else
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#error processor architecture not supported
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#endif
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#endif /* _ABS_SYM_GCC_H_ */
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