fab3a6c9de
Actually generate the appropriate floating-point warnings, and only one per assembly, pretty please. Correct the round-to-overflow condition; as written all numbers with a positive exponent were considered overflows!
330 lines
10 KiB
C
330 lines
10 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 licence given in the file "Licence"
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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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/*
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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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/*
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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_malloc_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 *, int);
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#endif
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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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* 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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#define WRITECHAR(p,v) \
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do { \
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*(p)++ = (v) & 0xFF; \
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} while (0)
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#define WRITESHORT(p,v) \
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do { \
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WRITECHAR(p,v); \
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WRITECHAR(p,(v) >> 8); \
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} while (0)
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#define WRITELONG(p,v) \
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do { \
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WRITECHAR(p,v); \
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WRITECHAR(p,(v) >> 8); \
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WRITECHAR(p,(v) >> 16); \
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WRITECHAR(p,(v) >> 24); \
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} while (0)
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#define WRITEDLONG(p,v) \
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do { \
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WRITECHAR(p,v); \
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WRITECHAR(p,(v) >> 8); \
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WRITECHAR(p,(v) >> 16); \
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WRITECHAR(p,(v) >> 24); \
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WRITECHAR(p,(v) >> 32); \
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WRITECHAR(p,(v) >> 40); \
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WRITECHAR(p,(v) >> 48); \
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WRITECHAR(p,(v) >> 56); \
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} while (0)
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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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void fwriteint16_t(int data, FILE * fp);
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void fwriteint32_t(int32_t data, FILE * fp);
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void fwriteint64_t(int64_t data, FILE * fp);
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/*
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* Routines to manage a dynamic random access array of int32_ts which
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* may grow in size to be more than the largest single malloc'able
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* chunk.
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*/
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#define RAA_BLKSIZE 65536 /* this many longs allocated at once */
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#define RAA_LAYERSIZE 32768 /* this many _pointers_ allocated */
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typedef struct RAA RAA;
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typedef union RAA_UNION RAA_UNION;
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typedef struct RAA_LEAF RAA_LEAF;
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typedef struct RAA_BRANCH RAA_BRANCH;
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struct RAA {
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/*
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* Number of layers below this one to get to the real data. 0
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* means this structure is a leaf, holding RAA_BLKSIZE real
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* data items; 1 and above mean it's a branch, holding
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* RAA_LAYERSIZE pointers to the next level branch or leaf
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* structures.
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*/
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int layers;
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/*
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* Number of real data items spanned by one position in the
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* `data' array at this level. This number is 1, trivially, for
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* a leaf (level 0): for a level 1 branch it should be
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* RAA_BLKSIZE, and for a level 2 branch it's
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* RAA_LAYERSIZE*RAA_BLKSIZE.
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*/
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int32_t stepsize;
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union RAA_UNION {
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struct RAA_LEAF {
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int32_t data[RAA_BLKSIZE];
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} l;
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struct RAA_BRANCH {
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struct RAA *data[RAA_LAYERSIZE];
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} b;
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} u;
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};
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struct RAA *raa_init(void);
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void raa_free(struct RAA *);
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int32_t raa_read(struct RAA *, int32_t);
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struct RAA *raa_write(struct RAA *r, int32_t posn, int32_t value);
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/*
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* Routines to manage a dynamic sequential-access array, under the
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* same restriction on maximum mallocable block. This array may be
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* written to in two ways: a contiguous chunk can be reserved of a
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* given size with a pointer returned OR single-byte data may be
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* written. The array can also be read back in the same two ways:
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* as a series of big byte-data blocks or as a list of structures
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* of a given size.
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*/
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struct SAA {
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/*
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* members `end' and `elem_len' are only valid in first link in
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* list; `rptr' and `rpos' are used for reading
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*/
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size_t elem_len; /* Size of each element */
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size_t blk_len; /* Size of each allocation block */
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size_t nblks; /* Total number of allocated blocks */
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size_t nblkptrs; /* Total number of allocation block pointers */
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size_t length; /* Total allocated length of the array */
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size_t datalen; /* Total data length of the array */
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char **wblk; /* Write block pointer */
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size_t wpos; /* Write position inside block */
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size_t wptr; /* Absolute write position */
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char **rblk; /* Read block pointer */
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size_t rpos; /* Read position inside block */
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size_t rptr; /* Absolute read position */
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char **blk_ptrs; /* Pointer to pointer blocks */
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};
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struct SAA *saa_init(size_t elem_len); /* 1 == byte */
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void saa_free(struct SAA *);
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void *saa_wstruct(struct SAA *); /* return a structure of elem_len */
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void saa_wbytes(struct SAA *, const void *, size_t); /* write arbitrary bytes */
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void saa_rewind(struct SAA *); /* for reading from beginning */
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void *saa_rstruct(struct SAA *); /* return NULL on EOA */
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const void *saa_rbytes(struct SAA *, size_t *); /* return 0 on EOA */
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void saa_rnbytes(struct SAA *, void *, size_t); /* read a given no. of bytes */
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/* random access */
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void saa_fread(struct SAA *, size_t, void *, size_t);
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void saa_fwrite(struct SAA *, size_t, const void *, size_t);
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/* dump to file */
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void saa_fpwrite(struct SAA *, FILE *);
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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(char *string, const char **array, int size);
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int bsii(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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void nasm_quote(char **str);
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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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