From fcedfddf00b3f994e4f4e40332ac7fc192c63244 Mon Sep 17 00:00:00 2001 From: polwex Date: Sun, 5 Oct 2025 21:56:51 +0700 Subject: claude is gud --- vere/ext/nasm/include/nasmlib.h | 467 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 467 insertions(+) create mode 100644 vere/ext/nasm/include/nasmlib.h (limited to 'vere/ext/nasm/include/nasmlib.h') diff --git a/vere/ext/nasm/include/nasmlib.h b/vere/ext/nasm/include/nasmlib.h new file mode 100644 index 0000000..87a7fc6 --- /dev/null +++ b/vere/ext/nasm/include/nasmlib.h @@ -0,0 +1,467 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 1996-2020 The NASM Authors - All Rights Reserved + * See the file AUTHORS included with the NASM distribution for + * the specific copyright holders. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following + * conditions are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * ----------------------------------------------------------------------- */ + +/* + * nasmlib.h header file for nasmlib.c + */ + +#ifndef NASM_NASMLIB_H +#define NASM_NASMLIB_H + +#include "compiler.h" +#include "bytesex.h" + +/* + * Useful construct for private values + */ +union intorptr { + int64_t i; + uint64_t u; + size_t s; + void *p; + const void *cp; + uintptr_t up; +}; +typedef union intorptr intorptr; + +/* + * Wrappers around malloc, realloc, free and a few more. nasm_malloc + * will fatal-error and die rather than return NULL; nasm_realloc will + * do likewise, and will also guarantee to work right on being passed + * a NULL pointer; nasm_free will do nothing if it is passed a NULL + * pointer. + */ +void * safe_malloc(1) nasm_malloc(size_t); +void * safe_malloc(1) nasm_zalloc(size_t); +void * safe_malloc2(1,2) nasm_calloc(size_t, size_t); +void * safe_realloc(2) nasm_realloc(void *, size_t); +void nasm_free(void *); +char * safe_alloc nasm_strdup(const char *); +char * safe_alloc nasm_strndup(const char *, size_t); +char * safe_alloc nasm_strcat(const char *one, const char *two); +char * safe_alloc end_with_null nasm_strcatn(const char *one, ...); + +/* + * nasm_[v]asprintf() are variants of the semi-standard [v]asprintf() + * functions, except that we return the pointer instead of a count. + * The size of the string (including the final NUL!) is available + * by calling nasm_aprintf_size() afterwards. + * + * nasm_[v]axprintf() are similar, but allocates a user-defined amount + * of storage before the string, and returns a pointer to the + * allocated buffer. The value of nasm_aprintf_size() does *not* include + * this additional storage. + */ +char * safe_alloc printf_func(1, 2) nasm_asprintf(const char *fmt, ...); +char * safe_alloc vprintf_func(1) nasm_vasprintf(const char *fmt, va_list ap); +void * safe_alloc printf_func(2, 3) nasm_axprintf(size_t extra, const char *fmt, ...); +void * safe_alloc vprintf_func(2) nasm_vaxprintf(size_t extra, const char *fmt, va_list ap); + +/* + * nasm_last_string_len() returns the length of the last string allocated + * by [v]asprintf, nasm_strdup, nasm_strcat, or nasm_strcatn. + * + * nasm_last_string_size() returns the equivalent size including the + * final NUL. + */ +static inline size_t nasm_last_string_len(void) +{ + extern size_t _nasm_last_string_size; + return _nasm_last_string_size - 1; +} +static inline size_t nasm_last_string_size(void) +{ + extern size_t _nasm_last_string_size; + return _nasm_last_string_size; +} + +/* Assert the argument is a pointer without evaluating it */ +#define nasm_assert_pointer(p) ((void)sizeof(*(p))) + +#define nasm_new(p) ((p) = nasm_zalloc(sizeof(*(p)))) +#define nasm_newn(p,n) ((p) = nasm_calloc((n), sizeof(*(p)))) +/* + * This is broken on platforms where there are pointers which don't + * match void * in their internal layout. It unfortunately also + * loses any "const" part of the argument, although hopefully the + * compiler will warn in that case. + */ +#define nasm_delete(p) \ + do { \ + void **_pp = (void **)&(p); \ + nasm_assert_pointer(p); \ + nasm_free(*_pp); \ + *_pp = NULL; \ + } while (0) +#define nasm_zero(x) (memset(&(x), 0, sizeof(x))) +#define nasm_zeron(p,n) (memset((p), 0, (n)*sizeof(*(p)))) + +/* + * Wrappers around fread()/fwrite() which fatal-errors on failure. + * For fread(), only use this if EOF is supposed to be a fatal error! + */ +void nasm_read(void *, size_t, FILE *); +void nasm_write(const void *, size_t, FILE *); + +/* + * NASM failure at build time if the argument is false + */ +#ifdef static_assert +# define nasm_static_assert(x) static_assert((x), #x) +#elif defined(HAVE_FUNC_ATTRIBUTE_ERROR) && defined(__OPTIMIZE__) +# define nasm_static_assert(x) \ + do { \ + if (!(x)) { \ + extern void __attribute__((error("assertion " #x " failed"))) \ + _nasm_static_fail(void); \ + _nasm_static_fail(); \ + } \ + } while (0) +#else +/* See http://www.drdobbs.com/compile-time-assertions/184401873 */ +# define nasm_static_assert(x) \ + do { enum { _static_assert_failed = 1/(!!(x)) }; } while (0) +#endif + +/* + * conditional static assert, if we know it is possible to determine + * the assert value at compile time. Since if_constant triggers + * pedantic warnings on gcc, turn them off explicitly around this code. + */ +#ifdef static_assert +# define nasm_try_static_assert(x) \ + do { \ + not_pedantic_start \ + static_assert(if_constant(x, true), #x); \ + not_pedantic_end \ + } while (0) +#elif defined(HAVE_FUNC_ATTRIBUTE_ERROR) && defined(__OPTIMIZE__) +# define nasm_try_static_assert(x) \ + do { \ + if (!if_constant(x, true)) { \ + extern void __attribute__((error("assertion " #x " failed"))) \ + _nasm_static_fail(void); \ + _nasm_static_fail(); \ + } \ + } while (0) +#else +# define nasm_try_static_assert(x) ((void)0) +#endif + +/* + * NASM assert failure + */ +fatal_func nasm_assert_failed(const char *, int, const char *); +#define nasm_assert(x) \ + do { \ + nasm_try_static_assert(x); \ + if (unlikely(!(x))) \ + nasm_assert_failed(__FILE__,__LINE__,#x); \ + } while (0) + +/* Utility function to generate a string for an invalid enum */ +const char *invalid_enum_str(int); + +/* + * ANSI doesn't guarantee the presence of `stricmp' or + * `strcasecmp'. + */ +#if defined(HAVE_STRCASECMP) +#define nasm_stricmp strcasecmp +#elif defined(HAVE_STRICMP) +#define nasm_stricmp stricmp +#else +int pure_func nasm_stricmp(const char *, const char *); +#endif + +#if defined(HAVE_STRNCASECMP) +#define nasm_strnicmp strncasecmp +#elif defined(HAVE_STRNICMP) +#define nasm_strnicmp strnicmp +#else +int pure_func nasm_strnicmp(const char *, const char *, size_t); +#endif + +int pure_func nasm_memicmp(const char *, const char *, size_t); + +#if defined(HAVE_STRSEP) +#define nasm_strsep strsep +#else +char *nasm_strsep(char **stringp, const char *delim); +#endif + +#ifndef HAVE_DECL_STRNLEN +size_t pure_func strnlen(const char *, size_t); +#endif + +/* This returns the numeric value of a given 'digit'; no check for validity */ +static inline unsigned int numvalue(unsigned char c) +{ + c |= 0x20; + return c >= 'a' ? c - 'a' + 10 : c - '0'; +} + +/* + * Convert a string into a number, using NASM number rules. Sets + * `*error' to true if an error occurs, and false otherwise. + */ +int64_t readnum(const char *str, bool *error); + +/* + * Convert a character constant into a number. Sets + * `*warn' to true if an overflow occurs, and false otherwise. + * str points to and length covers the middle of the string, + * without the quotes. + */ +int64_t readstrnum(char *str, int length, bool *warn); + +/* + * seg_alloc: allocate a hitherto unused segment number. + */ +int32_t seg_alloc(void); + +/* + * Add/replace or remove an extension to the end of a filename + */ +const char *filename_set_extension(const char *inname, const char *extension); + +/* + * Utility macros... + * + * This is a useful #define which I keep meaning to use more often: + * the number of elements of a statically defined array. + */ +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) + +/* + * List handling + * + * list_for_each - regular iterator over list + * list_for_each_safe - the same but safe against list items removal + * list_last - find the last element in a list + * list_reverse - reverse the order of a list + * + * Arguments named with _ + single letter should be temp variables + * of the appropriate pointer type. + */ +#define list_for_each(pos, head) \ + for (pos = head; pos; pos = pos->next) +#define list_for_each_safe(pos, _n, head) \ + for (pos = head, _n = (pos ? pos->next : NULL); pos; \ + pos = _n, _n = (_n ? _n->next : NULL)) +#define list_last(pos, head) \ + for (pos = head; pos && pos->next; pos = pos->next) \ + ; +#define list_reverse(head) \ + do { \ + void *_p, *_n; \ + if (!head || !head->next) \ + break; \ + _p = NULL; \ + while (head) { \ + _n = head->next; \ + head->next = _p; \ + _p = head; \ + head = _n; \ + } \ + head = _p; \ + } while (0) + +/* + * Power of 2 align helpers + */ +#undef ALIGN_MASK /* Some BSD flavors define these in system headers */ +#undef ALIGN +#define ALIGN_MASK(v, mask) (((v) + (mask)) & ~(mask)) +#define ALIGN(v, a) ALIGN_MASK(v, (a) - 1) +#define IS_ALIGNED(v, a) (((v) & ((a) - 1)) == 0) + +/* + * Routines to write littleendian data to a file + */ +#define fwriteint8_t(d,f) putc(d,f) +void fwriteint16_t(uint16_t data, FILE * fp); +void fwriteint32_t(uint32_t data, FILE * fp); +void fwriteint64_t(uint64_t data, FILE * fp); +void fwriteaddr(uint64_t data, int size, FILE * fp); + +/* + * Binary search routine. Returns index into `array' of an entry + * matching `string', or <0 if no match. `array' is taken to + * contain `size' elements. + * + * bsi() is case sensitive, bsii() is case insensitive. + */ +int bsi(const char *string, const char **array, int size); +int bsii(const char *string, const char **array, int size); + +/* + * Convenient string processing helper routines + */ +char *nasm_skip_spaces(const char *p); +char *nasm_skip_word(const char *p); +char *nasm_zap_spaces_fwd(char *p); +char *nasm_zap_spaces_rev(char *p); +char *nasm_trim_spaces(char *p); +char *nasm_get_word(char *p, char **tail); +char *nasm_opt_val(char *p, char **opt, char **val); + +/* + * Converts a relative pathname rel_path into an absolute path name. + * + * The buffer returned must be freed by the caller + */ +char * safe_alloc nasm_realpath(const char *rel_path); + +/* + * Path-splitting and merging functions + */ +char * safe_alloc nasm_dirname(const char *path); +char * safe_alloc nasm_basename(const char *path); +char * safe_alloc nasm_catfile(const char *dir, const char *path); + +const char * pure_func prefix_name(int); + +/* + * Wrappers around fopen()... for future change to a dedicated structure + */ +enum file_flags { + NF_BINARY = 0x00000000, /* Binary file (default) */ + NF_TEXT = 0x00000001, /* Text file */ + NF_NONFATAL = 0x00000000, /* Don't die on open failure (default) */ + NF_FATAL = 0x00000002, /* Die on open failure */ + NF_FORMAP = 0x00000004, /* Intended to use nasm_map_file() */ + NF_IONBF = 0x00000010, /* Force unbuffered stdio */ + NF_IOLBF = 0x00000020, /* Force line buffered stdio */ + NF_IOFBF = 0000000030 /* Force fully buffered stdio */ +}; +#define NF_BUF_MASK 0x30 + +FILE *nasm_open_read(const char *filename, enum file_flags flags); +FILE *nasm_open_write(const char *filename, enum file_flags flags); + +void nasm_set_binary_mode(FILE *f); + +/* Probe for existence of a file */ +bool nasm_file_exists(const char *filename); + +#define ZERO_BUF_SIZE 65536 /* Default value */ +#if defined(BUFSIZ) && (BUFSIZ > ZERO_BUF_SIZE) +# undef ZERO_BUF_SIZE +# define ZERO_BUF_SIZE BUFSIZ +#endif +extern const uint8_t zero_buffer[ZERO_BUF_SIZE]; + +/* Missing fseeko/ftello */ +#ifndef HAVE_FSEEKO +# undef off_t /* Just in case it is a macro */ +# ifdef HAVE__FSEEKI64 +# define fseeko _fseeki64 +# define ftello _ftelli64 +# define off_t int64_t +# else +# define fseeko fseek +# define ftello ftell +# define off_t long +# endif +#endif + +const void *nasm_map_file(FILE *fp, off_t start, off_t len); +void nasm_unmap_file(const void *p, size_t len); +off_t nasm_file_size(FILE *f); +off_t nasm_file_size_by_path(const char *pathname); +bool nasm_file_time(time_t *t, const char *pathname); +void fwritezero(off_t bytes, FILE *fp); + +static inline bool const_func overflow_general(int64_t value, int bytes) +{ + int sbit; + int64_t vmax, vmin; + + if (bytes >= 8) + return false; + + sbit = (bytes << 3) - 1; + vmax = ((int64_t)2 << sbit) - 1; + vmin = -((int64_t)2 << sbit); + + return value < vmin || value > vmax; +} + +static inline bool const_func overflow_signed(int64_t value, int bytes) +{ + int sbit; + int64_t vmax, vmin; + + if (bytes >= 8) + return false; + + sbit = (bytes << 3) - 1; + vmax = ((int64_t)1 << sbit) - 1; + vmin = -((int64_t)1 << sbit); + + return value < vmin || value > vmax; +} + +static inline bool const_func overflow_unsigned(int64_t value, int bytes) +{ + int sbit; + int64_t vmax, vmin; + + if (bytes >= 8) + return false; + + sbit = (bytes << 3) - 1; + vmax = ((int64_t)2 << sbit) - 1; + vmin = 0; + + return value < vmin || value > vmax; +} + +static inline int64_t const_func signed_bits(int64_t value, int bits) +{ + if (bits < 64) { + value &= ((int64_t)1 << bits) - 1; + if (value & (int64_t)1 << (bits - 1)) + value |= (int64_t)((uint64_t)-1 << bits); + } + return value; +} + +/* check if value is power of 2 */ +#define is_power2(v) ((v) && ((v) & ((v) - 1)) == 0) + +/* try to get the system stack size */ +extern size_t nasm_get_stack_size_limit(void); + +#endif -- cgit v1.2.3