ac8f8fcb27
On some platforms, tolower() is implemented as a function call, in order to handle locale support. We never change locales, so can the result of tolower() into a table, so we don't have to sit through the function call every time. ~1.3% overall performance improvement on a macro-heavy benchmark under Linux x86-64.
321 lines
9.1 KiB
C
321 lines
9.1 KiB
C
/* nasmlib.h header file for nasmlib.c
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*
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* The Netwide Assembler is copyright (C) 1996 Simon Tatham and
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* Julian Hall. All rights reserved. The software is
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* redistributable under the license given in the file "LICENSE"
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* distributed in the NASM archive.
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*/
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#ifndef NASM_NASMLIB_H
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#define NASM_NASMLIB_H
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#include "compiler.h"
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#include <inttypes.h>
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#include <stdio.h>
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#include <string.h>
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif
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/*
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* If this is defined, the wrappers around malloc et al will
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* transform into logging variants, which will cause NASM to create
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* a file called `malloc.log' when run, and spew details of all its
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* memory management into that. That can then be analysed to detect
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* memory leaks and potentially other problems too.
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*/
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/* #define LOGALLOC */
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/*
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* -------------------------
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* Error reporting functions
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* -------------------------
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*/
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/*
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* An error reporting function should look like this.
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*/
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typedef void (*efunc) (int severity, const char *fmt, ...);
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extern efunc nasm_malloc_error;
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/*
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* These are the error severity codes which get passed as the first
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* argument to an efunc.
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*/
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#define ERR_DEBUG 0x00000008 /* put out debugging message */
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#define ERR_WARNING 0x00000000 /* warn only: no further action */
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#define ERR_NONFATAL 0x00000001 /* terminate assembly after phase */
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#define ERR_FATAL 0x00000002 /* instantly fatal: exit with error */
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#define ERR_PANIC 0x00000003 /* internal error: panic instantly
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* and dump core for reference */
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#define ERR_MASK 0x0000000F /* mask off the above codes */
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#define ERR_NOFILE 0x00000010 /* don't give source file name/line */
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#define ERR_USAGE 0x00000020 /* print a usage message */
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#define ERR_PASS1 0x00000040 /* only print this error on pass one */
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#define ERR_NO_SEVERITY 0x00000080 /* suppress printing severity */
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/*
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* These codes define specific types of suppressible warning.
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*/
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#define ERR_WARN_MASK 0x0000FF00 /* the mask for this feature */
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#define ERR_WARN_SHR 8 /* how far to shift right */
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#define WARN(x) ((x) << ERR_WARN_SHR)
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#define ERR_WARN_MNP WARN(1) /* macro-num-parameters warning */
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#define ERR_WARN_MSR WARN(2) /* macro self-reference */
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#define ERR_WARN_OL WARN(3) /* orphan label (no colon, and
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* alone on line) */
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#define ERR_WARN_NOV WARN(4) /* numeric overflow */
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#define ERR_WARN_GNUELF WARN(5) /* using GNU ELF extensions */
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#define ERR_WARN_FL_OVERFLOW WARN(6) /* FP overflow */
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#define ERR_WARN_FL_DENORM WARN(7) /* FP denormal */
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#define ERR_WARN_FL_UNDERFLOW WARN(8) /* FP underflow */
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#define ERR_WARN_FL_TOOLONG WARN(9) /* FP too many digits */
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#define ERR_WARN_MAX 9 /* the highest numbered one */
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/*
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* Wrappers around malloc, realloc and free. nasm_malloc will
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* fatal-error and die rather than return NULL; nasm_realloc will
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* do likewise, and will also guarantee to work right on being
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* passed a NULL pointer; nasm_free will do nothing if it is passed
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* a NULL pointer.
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*/
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void nasm_set_malloc_error(efunc);
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#ifndef LOGALLOC
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void *nasm_malloc(size_t);
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void *nasm_zalloc(size_t);
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void *nasm_realloc(void *, size_t);
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void nasm_free(void *);
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char *nasm_strdup(const char *);
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char *nasm_strndup(char *, size_t);
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#else
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void *nasm_malloc_log(char *, int, size_t);
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void *nasm_zalloc_log(char *, int, size_t);
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void *nasm_realloc_log(char *, int, void *, size_t);
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void nasm_free_log(char *, int, void *);
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char *nasm_strdup_log(char *, int, const char *);
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char *nasm_strndup_log(char *, int, char *, size_t);
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#define nasm_malloc(x) nasm_malloc_log(__FILE__,__LINE__,x)
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#define nasm_zalloc(x) nasm_zalloc_log(__FILE__,__LINE__,x)
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#define nasm_realloc(x,y) nasm_realloc_log(__FILE__,__LINE__,x,y)
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#define nasm_free(x) nasm_free_log(__FILE__,__LINE__,x)
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#define nasm_strdup(x) nasm_strdup_log(__FILE__,__LINE__,x)
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#define nasm_strndup(x,y) nasm_strndup_log(__FILE__,__LINE__,x,y)
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#endif
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/*
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* ANSI doesn't guarantee the presence of `stricmp' or
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* `strcasecmp'.
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*/
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#if defined(HAVE_STRCASECMP)
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#define nasm_stricmp strcasecmp
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#elif defined(HAVE_STRICMP)
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#define nasm_stricmp stricmp
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#else
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int nasm_stricmp(const char *, const char *);
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#endif
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#if defined(HAVE_STRNCASECMP)
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#define nasm_strnicmp strncasecmp
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#elif defined(HAVE_STRNICMP)
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#define nasm_strnicmp strnicmp
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#else
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int nasm_strnicmp(const char *, const char *, size_t);
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#endif
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int nasm_memicmp(const char *, const char *, size_t);
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#if defined(HAVE_STRSEP)
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#define nasm_strsep strsep
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#else
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char *nasm_strsep(char **stringp, const char *delim);
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#endif
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/*
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* Convert a string into a number, using NASM number rules. Sets
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* `*error' to true if an error occurs, and false otherwise.
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*/
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int64_t readnum(char *str, bool *error);
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/*
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* Convert a character constant into a number. Sets
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* `*warn' to true if an overflow occurs, and false otherwise.
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* str points to and length covers the middle of the string,
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* without the quotes.
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*/
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int64_t readstrnum(char *str, int length, bool *warn);
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/*
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* seg_init: Initialise the segment-number allocator.
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* seg_alloc: allocate a hitherto unused segment number.
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*/
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void seg_init(void);
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int32_t seg_alloc(void);
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/*
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* many output formats will be able to make use of this: a standard
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* function to add an extension to the name of the input file
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*/
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#ifdef NASM_NASM_H
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void standard_extension(char *inname, char *outname, char *extension,
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efunc error);
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#endif
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/*
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* Utility macros...
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*
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* This is a useful #define which I keep meaning to use more often:
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* the number of elements of a statically defined array.
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*/
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#define elements(x) ( sizeof(x) / sizeof(*(x)) )
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/*
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* tolower table -- avoids a function call on some platforms.
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* NOTE: unlike the tolower() function in ctype, EOF is *NOT*
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* a permitted value, for obvious reasons.
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*/
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void tolower_init(void);
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extern unsigned char nasm_tolower_tab[256];
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#define nasm_tolower(x) nasm_tolower_tab[(unsigned char)(x)]
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/*
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* some handy macros that will probably be of use in more than one
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* output format: convert integers into little-endian byte packed
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* format in memory
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*/
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#if X86_MEMORY
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#define WRITECHAR(p,v) \
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do { \
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*(uint8_t *)(p) = (v); \
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(p) += 1; \
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} while (0)
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#define WRITESHORT(p,v) \
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do { \
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*(uint16_t *)(p) = (v); \
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(p) += 2; \
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} while (0)
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#define WRITELONG(p,v) \
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do { \
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*(uint32_t *)(p) = (v); \
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(p) += 4; \
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} while (0)
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#define WRITEDLONG(p,v) \
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do { \
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*(uint64_t *)(p) = (v); \
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(p) += 8; \
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} while (0)
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#define WRITEADDR(p,v,s) \
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do { \
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uint64_t _wa_v = (v); \
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memcpy((p), &_wa_v, (s)); \
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(p) += (s); \
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} while (0)
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#else /* !X86_MEMORY */
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#define WRITECHAR(p,v) \
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do { \
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uint8_t *_wc_p = (uint8_t *)(p); \
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uint8_t _wc_v = (v); \
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_wc_p[0] = _wc_v; \
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(p) = (void *)(_wc_p + 1); \
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} while (0)
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#define WRITESHORT(p,v) \
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do { \
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uint8_t *_ws_p = (uint8_t *)(p); \
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uint16_t _ws_v = (v); \
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_ws_p[0] = _ws_v; \
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_ws_p[1] = _ws_v >> 8; \
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(p) = (void *)(_ws_p + 2); \
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} while (0)
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#define WRITELONG(p,v) \
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do { \
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uint8_t *_wl_p = (uint8_t *)(p); \
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uint32_t _wl_v = (v); \
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_wl_p[0] = _wl_v; \
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_wl_p[1] = _wl_v >> 8; \
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_wl_p[2] = _wl_v >> 16; \
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_wl_p[3] = _wl_v >> 24; \
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(p) = (void *)(_wl_p + 4); \
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} while (0)
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#define WRITEDLONG(p,v) \
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do { \
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uint8_t *_wq_p = (uint8_t *)(p); \
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uint64_t _wq_v = (v); \
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_wq_p[0] = _wq_v; \
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_wq_p[1] = _wq_v >> 8; \
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_wq_p[2] = _wq_v >> 16; \
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_wq_p[3] = _wq_v >> 24; \
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_wq_p[4] = _wq_v >> 32; \
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_wq_p[5] = _wq_v >> 40; \
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_wq_p[6] = _wq_v >> 48; \
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_wq_p[7] = _wq_v >> 56; \
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(p) = (void *)(_wq_p + 8); \
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} while (0)
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#define WRITEADDR(p,v,s) \
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do { \
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int _wa_s = (s); \
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uint64_t _wa_v = (v); \
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while (_wa_s--) { \
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WRITECHAR(p,_wa_v); \
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_wa_v >>= 8; \
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} \
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} while(0)
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#endif
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/*
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* and routines to do the same thing to a file
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*/
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#define fwriteint8_t(d,f) putc(d,f)
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void fwriteint16_t(uint16_t data, FILE * fp);
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void fwriteint32_t(uint32_t data, FILE * fp);
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void fwriteint64_t(uint64_t data, FILE * fp);
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void fwriteaddr(uint64_t data, int size, FILE * fp);
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/*
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* Binary search routine. Returns index into `array' of an entry
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* matching `string', or <0 if no match. `array' is taken to
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* contain `size' elements.
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*
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* bsi() is case sensitive, bsii() is case insensitive.
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*/
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int bsi(const char *string, const char **array, int size);
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int bsii(const char *string, const char **array, int size);
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char *src_set_fname(char *newname);
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int32_t src_set_linnum(int32_t newline);
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int32_t src_get_linnum(void);
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/*
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* src_get may be used if you simply want to know the source file and line.
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* It is also used if you maintain private status about the source location
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* It return 0 if the information was the same as the last time you
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* checked, -1 if the name changed and (new-old) if just the line changed.
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*/
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int src_get(int32_t *xline, char **xname);
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char *nasm_strcat(char *one, char *two);
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void null_debug_routine(const char *directive, const char *params);
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extern struct dfmt null_debug_form;
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extern struct dfmt *null_debug_arr[2];
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const char *prefix_name(int);
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#endif
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