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author | Richard Henderson <rth@twiddle.net> | 2013-01-04 16:39:30 -0800 |
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committer | Blue Swirl <blauwirbel@gmail.com> | 2013-01-12 12:24:33 +0000 |
commit | c732a52d3e3b7ed42d7daa94ba40a83408cd6f22 (patch) | |
tree | 586ab7f97b97beb03a03c2e82db343f6748ffa28 /include/qemu | |
parent | 612d590ebc6cef179cf5f7823522237e622ab430 (diff) | |
download | qemu-c732a52d3e3b7ed42d7daa94ba40a83408cd6f22.zip qemu-c732a52d3e3b7ed42d7daa94ba40a83408cd6f22.tar.gz qemu-c732a52d3e3b7ed42d7daa94ba40a83408cd6f22.tar.bz2 |
bswap: Rewrite cpu_to_<endian><type>u with {ld,st}<type>_<endian>_p
We've now optimized the ld/st versions; reuse that for the "legacy"
versions. Always use inlines so that we get the type checking that
we expect.
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'include/qemu')
-rw-r--r-- | include/qemu/bswap.h | 147 |
1 files changed, 53 insertions, 94 deletions
diff --git a/include/qemu/bswap.h b/include/qemu/bswap.h index 68cda6a..be9b035 100644 --- a/include/qemu/bswap.h +++ b/include/qemu/bswap.h @@ -121,100 +121,6 @@ CPU_CONVERT(le, 16, uint16_t) CPU_CONVERT(le, 32, uint32_t) CPU_CONVERT(le, 64, uint64_t) -/* unaligned versions (optimized for frequent unaligned accesses)*/ - -#if defined(__i386__) || defined(_ARCH_PPC) - -#define cpu_to_le16wu(p, v) cpu_to_le16w(p, v) -#define cpu_to_le32wu(p, v) cpu_to_le32w(p, v) -#define le16_to_cpupu(p) le16_to_cpup(p) -#define le32_to_cpupu(p) le32_to_cpup(p) -#define be32_to_cpupu(p) be32_to_cpup(p) - -#define cpu_to_be16wu(p, v) cpu_to_be16w(p, v) -#define cpu_to_be32wu(p, v) cpu_to_be32w(p, v) -#define cpu_to_be64wu(p, v) cpu_to_be64w(p, v) - -#else - -static inline void cpu_to_le16wu(uint16_t *p, uint16_t v) -{ - uint8_t *p1 = (uint8_t *)p; - - p1[0] = v & 0xff; - p1[1] = v >> 8; -} - -static inline void cpu_to_le32wu(uint32_t *p, uint32_t v) -{ - uint8_t *p1 = (uint8_t *)p; - - p1[0] = v & 0xff; - p1[1] = v >> 8; - p1[2] = v >> 16; - p1[3] = v >> 24; -} - -static inline uint16_t le16_to_cpupu(const uint16_t *p) -{ - const uint8_t *p1 = (const uint8_t *)p; - return p1[0] | (p1[1] << 8); -} - -static inline uint32_t le32_to_cpupu(const uint32_t *p) -{ - const uint8_t *p1 = (const uint8_t *)p; - return p1[0] | (p1[1] << 8) | (p1[2] << 16) | (p1[3] << 24); -} - -static inline uint32_t be32_to_cpupu(const uint32_t *p) -{ - const uint8_t *p1 = (const uint8_t *)p; - return p1[3] | (p1[2] << 8) | (p1[1] << 16) | (p1[0] << 24); -} - -static inline void cpu_to_be16wu(uint16_t *p, uint16_t v) -{ - uint8_t *p1 = (uint8_t *)p; - - p1[0] = v >> 8; - p1[1] = v & 0xff; -} - -static inline void cpu_to_be32wu(uint32_t *p, uint32_t v) -{ - uint8_t *p1 = (uint8_t *)p; - - p1[0] = v >> 24; - p1[1] = v >> 16; - p1[2] = v >> 8; - p1[3] = v & 0xff; -} - -static inline void cpu_to_be64wu(uint64_t *p, uint64_t v) -{ - uint8_t *p1 = (uint8_t *)p; - - p1[0] = v >> 56; - p1[1] = v >> 48; - p1[2] = v >> 40; - p1[3] = v >> 32; - p1[4] = v >> 24; - p1[5] = v >> 16; - p1[6] = v >> 8; - p1[7] = v & 0xff; -} - -#endif - -#ifdef HOST_WORDS_BIGENDIAN -#define cpu_to_32wu cpu_to_be32wu -#define leul_to_cpu(v) glue(glue(le,HOST_LONG_BITS),_to_cpu)(v) -#else -#define cpu_to_32wu cpu_to_le32wu -#define leul_to_cpu(v) (v) -#endif - /* len must be one of 1, 2, 4 */ static inline uint32_t qemu_bswap_len(uint32_t value, int len) { @@ -310,6 +216,7 @@ typedef union { * be : big endian * le : little endian */ + static inline int ldub_p(const void *ptr) { return *(uint8_t *)ptr; @@ -502,6 +409,58 @@ static inline void stfq_be_p(void *ptr, float64 v) stq_be_p(ptr, u.ll); } +/* Legacy unaligned versions. Note that we never had a complete set. */ + +static inline void cpu_to_le16wu(uint16_t *p, uint16_t v) +{ + stw_le_p(p, v); +} + +static inline void cpu_to_le32wu(uint32_t *p, uint32_t v) +{ + stl_le_p(p, v); +} + +static inline uint16_t le16_to_cpupu(const uint16_t *p) +{ + return lduw_le_p(p); +} + +static inline uint32_t le32_to_cpupu(const uint32_t *p) +{ + return ldl_le_p(p); +} + +static inline uint32_t be32_to_cpupu(const uint32_t *p) +{ + return ldl_be_p(p); +} + +static inline void cpu_to_be16wu(uint16_t *p, uint16_t v) +{ + stw_be_p(p, v); +} + +static inline void cpu_to_be32wu(uint32_t *p, uint32_t v) +{ + stl_be_p(p, v); +} + +static inline void cpu_to_be64wu(uint64_t *p, uint64_t v) +{ + stq_be_p(p, v); +} + +static inline void cpu_to_32wu(uint32_t *p, uint32_t v) +{ + stl_p(p, v); +} + +static inline unsigned long leul_to_cpu(unsigned long v) +{ + return le_bswap(v, HOST_LONG_BITS); +} + #undef le_bswap #undef be_bswap #undef le_bswaps |