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emulators/openmsx/files/patch-src_utils_endian.hh
- This file was added.
| Property | Old Value | New Value |
|---|---|---|
| fbsd:nokeywords | null | yes \ No newline at end of property |
| svn:eol-style | null | native \ No newline at end of property |
| svn:mime-type | null | text/plain \ No newline at end of property |
| --- src/utils/endian.hh.orig 2020-08-25 21:16:08 UTC | |||||
| +++ src/utils/endian.hh | |||||
| @@ -9,23 +9,23 @@ | |||||
| namespace Endian { | |||||
| // Reverse bytes in a 16-bit number: 0x1234 becomes 0x3412 | |||||
| -[[nodiscard]] static inline uint16_t bswap16(uint16_t x) | |||||
| +[[nodiscard]] static inline uint16_t byteswap16(uint16_t x) | |||||
| { | |||||
| // This sequence generates 'optimal' code on a wide range of gcc/clang | |||||
| // versions (a single rotate instruction on x86). The newer compiler | |||||
| // versions also do 'the right thing' for the simpler expression below. | |||||
| - // Those newer compilers also support __builtin_bswap16() but that | |||||
| + // Those newer compilers also support __builtin_byteswap16() but that | |||||
| // doesn't generate better code (and is less portable). | |||||
| return ((x & 0x00FF) << 8) | ((x & 0xFF00) >> 8); | |||||
| //return (x << 8) | (x >> 8); | |||||
| } | |||||
| // Reverse bytes in a 32-bit number: 0x12345678 becomes 0x78563412 | |||||
| -[[nodiscard]] static inline uint32_t bswap32(uint32_t x) | |||||
| +[[nodiscard]] static inline uint32_t byteswap32(uint32_t x) | |||||
| { | |||||
| #if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3)) | |||||
| // Starting from gcc-4.3 there's a builtin function for this. | |||||
| - // E.g. on x86 this is translated to a single 'bswap' instruction. | |||||
| + // E.g. on x86 this is translated to a single 'byteswap' instruction. | |||||
| return __builtin_bswap32(x); | |||||
| #else | |||||
| return (x << 24) | | |||||
| @@ -36,22 +36,22 @@ namespace Endian { | |||||
| } | |||||
| // Reverse bytes in a 64-bit value: 0x1122334455667788 becomes 0x8877665544332211 | |||||
| -[[nodiscard]] static inline uint64_t bswap64(uint64_t x) | |||||
| +[[nodiscard]] static inline uint64_t byteswap64(uint64_t x) | |||||
| { | |||||
| #if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 3)) | |||||
| // Starting from gcc-4.3 there's a builtin function for this. | |||||
| - // E.g. on x86 this is translated to a single 'bswap' instruction. | |||||
| + // E.g. on x86 this is translated to a single 'byteswap' instruction. | |||||
| return __builtin_bswap64(x); | |||||
| #else | |||||
| - return (uint64_t(bswap32(x >> 0)) << 32) | | |||||
| - (uint64_t(bswap32(x >> 32)) << 0); | |||||
| + return (uint64_t(byteswap32(x >> 0)) << 32) | | |||||
| + (uint64_t(byteswap32(x >> 32)) << 0); | |||||
| #endif | |||||
| } | |||||
| -// Use overloading to get a (statically) polymorphic bswap() function. | |||||
| -[[nodiscard]] static inline uint16_t bswap(uint16_t x) { return bswap16(x); } | |||||
| -[[nodiscard]] static inline uint32_t bswap(uint32_t x) { return bswap32(x); } | |||||
| -[[nodiscard]] static inline uint64_t bswap(uint64_t x) { return bswap64(x); } | |||||
| +// Use overloading to get a (statically) polymorphic byteswap() function. | |||||
| +[[nodiscard]] static inline uint16_t byteswap(uint16_t x) { return byteswap16(x); } | |||||
| +[[nodiscard]] static inline uint32_t byteswap(uint32_t x) { return byteswap32(x); } | |||||
| +[[nodiscard]] static inline uint64_t byteswap(uint64_t x) { return byteswap64(x); } | |||||
| // Identity operator, simply returns the given value. | |||||
| @@ -61,7 +61,7 @@ struct Ident { | |||||
| // Byte-swap operator, swap bytes in the given value (16 or 32 bit). | |||||
| struct BSwap { | |||||
| - template <typename T> [[nodiscard]] inline T operator()(T t) const { return bswap(t); } | |||||
| + template <typename T> [[nodiscard]] inline T operator()(T t) const { return byteswap(t); } | |||||
| }; | |||||
| // Helper class that stores a value and allows to read/write that value. Though | |||||
| @@ -165,7 +165,7 @@ static inline void writeL32(void* p, uint32_t x) | |||||
| template<bool SWAP, typename T> static ALWAYS_INLINE void write_UA(void* p, T x) | |||||
| { | |||||
| - if (SWAP) x = bswap(x); | |||||
| + if (SWAP) x = byteswap(x); | |||||
| memcpy(p, &x, sizeof(x)); | |||||
| } | |||||
| static ALWAYS_INLINE void write_UA_B16(void* p, uint16_t x) | |||||
| @@ -197,7 +197,7 @@ template<bool SWAP, typename T> [[nodiscard]] static A | |||||
| { | |||||
| T x; | |||||
| memcpy(&x, p, sizeof(x)); | |||||
| - if (SWAP) x = bswap(x); | |||||
| + if (SWAP) x = byteswap(x); | |||||
| return x; | |||||
| } | |||||
| [[nodiscard]] static ALWAYS_INLINE uint16_t read_UA_B16(const void* p) | |||||