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| author | Mitchell Riedstra <mitch@riedstra.dev> | 2025-12-24 19:49:57 -0500 |
|---|---|---|
| committer | Mitchell Riedstra <mitch@riedstra.dev> | 2025-12-24 19:49:57 -0500 |
| commit | 939ac4319cb047a37ba46f84eff81948063f6954 (patch) | |
| tree | 5112cf8aad73125a13f5b52c0290a7f26f948b52 /jslinux-2019-12-21/tinyemu-2019-12-21/cutils.h | |
| parent | 3a1b5ba15b89c907f9bf66a0761ffdd73b32208b (diff) | |
| download | unixv4-939ac4319cb047a37ba46f84eff81948063f6954.tar.gz unixv4-939ac4319cb047a37ba46f84eff81948063f6954.tar.xz | |
Add working webpage for unix v4
Diffstat (limited to 'jslinux-2019-12-21/tinyemu-2019-12-21/cutils.h')
| -rw-r--r-- | jslinux-2019-12-21/tinyemu-2019-12-21/cutils.h | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/jslinux-2019-12-21/tinyemu-2019-12-21/cutils.h b/jslinux-2019-12-21/tinyemu-2019-12-21/cutils.h new file mode 100644 index 0000000..689542e --- /dev/null +++ b/jslinux-2019-12-21/tinyemu-2019-12-21/cutils.h @@ -0,0 +1,194 @@ +/* + * C utilities + * + * Copyright (c) 2016 Fabrice Bellard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +#ifndef CUTILS_H +#define CUTILS_H + +#include <inttypes.h> + +#define likely(x) __builtin_expect(!!(x), 1) +#define unlikely(x) __builtin_expect(!!(x), 0) +#define force_inline inline __attribute__((always_inline)) +#define no_inline __attribute__((noinline)) +#define __maybe_unused __attribute__((unused)) + +#define xglue(x, y) x ## y +#define glue(x, y) xglue(x, y) +#define stringify(s) tostring(s) +#define tostring(s) #s + +#ifndef offsetof +#define offsetof(type, field) ((size_t) &((type *)0)->field) +#endif +#define countof(x) (sizeof(x) / sizeof(x[0])) + +#define DLL_PUBLIC __attribute__ ((visibility ("default"))) + +#ifndef _BOOL_defined +#define _BOOL_defined +#undef FALSE +#undef TRUE + +typedef int BOOL; +enum { + FALSE = 0, + TRUE = 1, +}; +#endif + +/* this test works at least with gcc */ +#if defined(__SIZEOF_INT128__) +#define HAVE_INT128 +#endif + +#ifdef HAVE_INT128 +typedef __int128 int128_t; +typedef unsigned __int128 uint128_t; +#endif + +static inline int max_int(int a, int b) +{ + if (a > b) + return a; + else + return b; +} + +static inline int min_int(int a, int b) +{ + if (a < b) + return a; + else + return b; +} + +void *mallocz(size_t size); + +#if defined(_WIN32) +static inline uint32_t bswap_32(uint32_t v) +{ + return ((v & 0xff000000) >> 24) | ((v & 0x00ff0000) >> 8) | + ((v & 0x0000ff00) << 8) | ((v & 0x000000ff) << 24); +} +#else +#include <byteswap.h> +#endif + +static inline uint16_t get_le16(const uint8_t *ptr) +{ + return ptr[0] | (ptr[1] << 8); +} + +static inline uint32_t get_le32(const uint8_t *ptr) +{ + return ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24); +} + +static inline uint64_t get_le64(const uint8_t *ptr) +{ + return get_le32(ptr) | ((uint64_t)get_le32(ptr + 4) << 32); +} + +static inline void put_le16(uint8_t *ptr, uint16_t v) +{ + ptr[0] = v; + ptr[1] = v >> 8; +} + +static inline void put_le32(uint8_t *ptr, uint32_t v) +{ + ptr[0] = v; + ptr[1] = v >> 8; + ptr[2] = v >> 16; + ptr[3] = v >> 24; +} + +static inline void put_le64(uint8_t *ptr, uint64_t v) +{ + put_le32(ptr, v); + put_le32(ptr + 4, v >> 32); +} + +static inline uint32_t get_be32(const uint8_t *d) +{ + return (d[0] << 24) | (d[1] << 16) | (d[2] << 8) | d[3]; +} + +static inline void put_be32(uint8_t *d, uint32_t v) +{ + d[0] = v >> 24; + d[1] = v >> 16; + d[2] = v >> 8; + d[3] = v >> 0; +} + +static inline void put_be64(uint8_t *d, uint64_t v) +{ + put_be32(d, v >> 32); + put_be32(d + 4, v); +} + +#ifdef WORDS_BIGENDIAN +static inline uint32_t cpu_to_be32(uint32_t v) +{ + return v; +} +#else +static inline uint32_t cpu_to_be32(uint32_t v) +{ + return bswap_32(v); +} +#endif + +/* XXX: optimize */ +static inline int ctz32(uint32_t a) +{ + int i; + if (a == 0) + return 32; + for(i = 0; i < 32; i++) { + if ((a >> i) & 1) + return i; + } + return 32; +} + + +void *mallocz(size_t size); +void pstrcpy(char *buf, int buf_size, const char *str); +char *pstrcat(char *buf, int buf_size, const char *s); +int strstart(const char *str, const char *val, const char **ptr); + +typedef struct { + uint8_t *buf; + size_t size; + size_t allocated_size; +} DynBuf; + +void dbuf_init(DynBuf *s); +void dbuf_write(DynBuf *s, size_t offset, const uint8_t *data, size_t len); +void dbuf_putc(DynBuf *s, uint8_t c); +void dbuf_putstr(DynBuf *s, const char *str); +void dbuf_free(DynBuf *s); + +#endif /* CUTILS_H */ |
