/* nasmlib.h header file for nasmlib.c * * The Netwide Assembler is copyright (C) 1996 Simon Tatham and * Julian Hall. All rights reserved. The software is * redistributable under the licence given in the file "Licence" * distributed in the NASM archive. */ #ifndef NASM_NASMLIB_H #define NASM_NASMLIB_H #include #include #include "compiler.h" /* * If this is defined, the wrappers around malloc et al will * transform into logging variants, which will cause NASM to create * a file called `malloc.log' when run, and spew details of all its * memory management into that. That can then be analysed to detect * memory leaks and potentially other problems too. */ /* #define LOGALLOC */ /* * ------------------------- * Error reporting functions * ------------------------- */ /* * An error reporting function should look like this. */ typedef void (*efunc) (int severity, const char *fmt, ...); /* * These are the error severity codes which get passed as the first * argument to an efunc. */ #define ERR_DEBUG 0x00000008 /* put out debugging message */ #define ERR_WARNING 0x00000000 /* warn only: no further action */ #define ERR_NONFATAL 0x00000001 /* terminate assembly after phase */ #define ERR_FATAL 0x00000002 /* instantly fatal: exit with error */ #define ERR_PANIC 0x00000003 /* internal error: panic instantly * and dump core for reference */ #define ERR_MASK 0x0000000F /* mask off the above codes */ #define ERR_NOFILE 0x00000010 /* don't give source file name/line */ #define ERR_USAGE 0x00000020 /* print a usage message */ #define ERR_PASS1 0x00000040 /* only print this error on pass one */ /* * These codes define specific types of suppressible warning. */ #define ERR_WARN_MASK 0x0000FF00 /* the mask for this feature */ #define ERR_WARN_SHR 8 /* how far to shift right */ #define ERR_WARN_MNP 0x00000100 /* macro-num-parameters warning */ #define ERR_WARN_MSR 0x00000200 /* macro self-reference */ #define ERR_WARN_OL 0x00000300 /* orphan label (no colon, and * alone on line) */ #define ERR_WARN_NOV 0x00000400 /* numeric overflow */ #define ERR_WARN_GNUELF 0x00000500 /* using GNU ELF extensions */ #define ERR_WARN_MAX 5 /* the highest numbered one */ /* * Wrappers around malloc, realloc and free. 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 nasm_set_malloc_error(efunc); #ifndef LOGALLOC void *nasm_malloc(size_t); void *nasm_realloc(void *, size_t); void nasm_free(void *); char *nasm_strdup(const char *); char *nasm_strndup(char *, size_t); #else void *nasm_malloc_log(char *, int, size_t); void *nasm_realloc_log(char *, int, void *, size_t); void nasm_free_log(char *, int, void *); char *nasm_strdup_log(char *, int, const char *); char *nasm_strndup_log(char *, int, char *, size_t); #define nasm_malloc(x) nasm_malloc_log(__FILE__,__LINE__,x) #define nasm_realloc(x,y) nasm_realloc_log(__FILE__,__LINE__,x,y) #define nasm_free(x) nasm_free_log(__FILE__,__LINE__,x) #define nasm_strdup(x) nasm_strdup_log(__FILE__,__LINE__,x) #define nasm_strndup(x,y) nasm_strndup_log(__FILE__,__LINE__,x,y) #endif /* * ANSI doesn't guarantee the presence of `stricmp' or * `strcasecmp'. */ #if defined(stricmp) || defined(strcasecmp) #if defined(stricmp) #define nasm_stricmp stricmp #else #define nasm_stricmp strcasecmp #endif #else int nasm_stricmp(const char *, const char *); #endif #if defined(strnicmp) || defined(strncasecmp) #if defined(strnicmp) #define nasm_strnicmp strnicmp #else #define nasm_strnicmp strncasecmp #endif #else int nasm_strnicmp(const char *, const char *, int); #endif #if defined(strsep) #define nasm_strsep strsep #else char *nasm_strsep(char **stringp, const char *delim); #endif /* * Convert a string into a number, using NASM number rules. Sets * `*error' to TRUE if an error occurs, and FALSE otherwise. */ int64_t readnum(char *str, int *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, int *warn); /* * seg_init: Initialise the segment-number allocator. * seg_alloc: allocate a hitherto unused segment number. */ void seg_init(void); int32_t seg_alloc(void); /* * many output formats will be able to make use of this: a standard * function to add an extension to the name of the input file */ #ifdef NASM_NASM_H void standard_extension(char *inname, char *outname, char *extension, efunc error); #endif /* * some handy macros that will probably be of use in more than one * output format: convert integers into little-endian byte packed * format in memory */ #define WRITECHAR(p,v) \ do { \ *(p)++ = (v) & 0xFF; \ } while (0) #define WRITESHORT(p,v) \ do { \ WRITECHAR(p,v); \ WRITECHAR(p,(v) >> 8); \ } while (0) #define WRITELONG(p,v) \ do { \ WRITECHAR(p,v); \ WRITECHAR(p,(v) >> 8); \ WRITECHAR(p,(v) >> 16); \ WRITECHAR(p,(v) >> 24); \ } while (0) #define WRITEDLONG(p,v) \ do { \ WRITECHAR(p,v); \ WRITECHAR(p,(v) >> 8); \ WRITECHAR(p,(v) >> 16); \ WRITECHAR(p,(v) >> 24); \ WRITECHAR(p,(v) >> 32); \ WRITECHAR(p,(v) >> 40); \ WRITECHAR(p,(v) >> 48); \ WRITECHAR(p,(v) >> 56); \ } while (0) /* * and routines to do the same thing to a file */ void fwriteint16_t(int data, FILE * fp); void fwriteint32_t(int32_t data, FILE * fp); void fwriteint64_t(int64_t data, FILE * fp); /* * Routines to manage a dynamic random access array of int32_ts which * may grow in size to be more than the largest single malloc'able * chunk. */ #define RAA_BLKSIZE 4096 /* this many longs allocated at once */ #define RAA_LAYERSIZE 1024 /* this many _pointers_ allocated */ typedef struct RAA RAA; typedef union RAA_UNION RAA_UNION; typedef struct RAA_LEAF RAA_LEAF; typedef struct RAA_BRANCH RAA_BRANCH; struct RAA { /* * Number of layers below this one to get to the real data. 0 * means this structure is a leaf, holding RAA_BLKSIZE real * data items; 1 and above mean it's a branch, holding * RAA_LAYERSIZE pointers to the next level branch or leaf * structures. */ int layers; /* * Number of real data items spanned by one position in the * `data' array at this level. This number is 1, trivially, for * a leaf (level 0): for a level 1 branch it should be * RAA_BLKSIZE, and for a level 2 branch it's * RAA_LAYERSIZE*RAA_BLKSIZE. */ int32_t stepsize; union RAA_UNION { struct RAA_LEAF { int32_t data[RAA_BLKSIZE]; } l; struct RAA_BRANCH { struct RAA *data[RAA_LAYERSIZE]; } b; } u; }; struct RAA *raa_init(void); void raa_free(struct RAA *); int32_t raa_read(struct RAA *, int32_t); struct RAA *raa_write(struct RAA *r, int32_t posn, int32_t value); /* * Routines to manage a dynamic sequential-access array, under the * same restriction on maximum mallocable block. This array may be * written to in two ways: a contiguous chunk can be reserved of a * given size with a pointer returned OR single-byte data may be * written. The array can also be read back in the same two ways: * as a series of big byte-data blocks or as a list of structures * of a given size. */ struct SAA { /* * members `end' and `elem_len' are only valid in first link in * list; `rptr' and `rpos' are used for reading */ struct SAA *next, *end, *rptr; int32_t elem_len, length, posn, start, rpos; char *data; }; struct SAA *saa_init(int32_t elem_len); /* 1 == byte */ void saa_free(struct SAA *); void *saa_wstruct(struct SAA *); /* return a structure of elem_len */ void saa_wbytes(struct SAA *, const void *, int32_t); /* write arbitrary bytes */ void saa_rewind(struct SAA *); /* for reading from beginning */ void *saa_rstruct(struct SAA *); /* return NULL on EOA */ void *saa_rbytes(struct SAA *, int32_t *); /* return 0 on EOA */ void saa_rnbytes(struct SAA *, void *, int32_t); /* read a given no. of bytes */ void saa_fread(struct SAA *s, int32_t posn, void *p, int32_t len); /* fixup */ void saa_fwrite(struct SAA *s, int32_t posn, void *p, int32_t len); /* fixup */ void saa_fpwrite(struct SAA *, FILE *); /* * 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(char *string, const char **array, int size); int bsii(char *string, const char **array, int size); char *src_set_fname(char *newname); int32_t src_set_linnum(int32_t newline); int32_t src_get_linnum(void); /* * src_get may be used if you simply want to know the source file and line. * It is also used if you maintain private status about the source location * It return 0 if the information was the same as the last time you * checked, -1 if the name changed and (new-old) if just the line changed. */ int src_get(int32_t *xline, char **xname); void nasm_quote(char **str); char *nasm_strcat(char *one, char *two); void null_debug_routine(const char *directive, const char *params); extern struct dfmt null_debug_form; extern struct dfmt *null_debug_arr[2]; const char *prefix_name(int); #endif