7d7a21ba69
'NEED_CPU_H' guard target-specific code; it is defined by meson altogether with the 'CONFIG_TARGET' definition. Rename NEED_CPU_H as COMPILING_PER_TARGET to clarify its meaning. Mechanical change running: $ sed -i s/NEED_CPU_H/COMPILING_PER_TARGET/g $(git grep -l NEED_CPU_H) then manually add a /* COMPILING_PER_TARGET */ comment after the '#endif' when the block is large. Inspired-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240322161439.6448-4-philmd@linaro.org>
73 lines
1.3 KiB
C
73 lines
1.3 KiB
C
/*
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* Macros for swapping a value if the endianness is different
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* between the target and the host.
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*/
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#ifndef TSWAP_H
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#define TSWAP_H
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#include "hw/core/cpu.h"
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#include "qemu/bswap.h"
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/*
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* If we're in target-specific code, we can hard-code the swapping
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* condition, otherwise we have to do (slower) run-time checks.
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*/
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#ifdef COMPILING_PER_TARGET
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#define target_needs_bswap() (HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN)
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#else
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#define target_needs_bswap() (target_words_bigendian() != HOST_BIG_ENDIAN)
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#endif /* COMPILING_PER_TARGET */
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static inline uint16_t tswap16(uint16_t s)
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{
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if (target_needs_bswap()) {
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return bswap16(s);
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} else {
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return s;
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}
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}
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static inline uint32_t tswap32(uint32_t s)
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{
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if (target_needs_bswap()) {
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return bswap32(s);
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} else {
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return s;
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}
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}
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static inline uint64_t tswap64(uint64_t s)
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{
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if (target_needs_bswap()) {
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return bswap64(s);
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} else {
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return s;
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}
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}
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static inline void tswap16s(uint16_t *s)
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{
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if (target_needs_bswap()) {
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*s = bswap16(*s);
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}
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}
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static inline void tswap32s(uint32_t *s)
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{
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if (target_needs_bswap()) {
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*s = bswap32(*s);
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}
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}
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static inline void tswap64s(uint64_t *s)
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{
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if (target_needs_bswap()) {
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*s = bswap64(*s);
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}
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}
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#endif /* TSWAP_H */
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