patch-2.1.16 linux/arch/ppc/boot/gzip.h

• Lines: 285
• Date: Wed Dec 18 10:49:52 1996
• Orig file: v2.1.15/linux/arch/ppc/boot/gzip.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v2.1.15/linux/arch/ppc/boot/gzip.h linux/arch/ppc/boot/gzip.h
@@ -0,0 +1,284 @@
+/* gzip.h -- common declarations for all gzip modules
+ * Copyright (C) 1992-1993 Jean-loup Gailly.
+ * This is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License, see the file COPYING.
+ */
+
+#if defined(__STDC__) || defined(PROTO)
+#  define OF(args)  args
+#else
+#  define OF(args)  ()
+#endif
+
+#ifdef __STDC__
+   typedef void *voidp;
+#else
+   typedef char *voidp;
+#endif
+
+/* I don't like nested includes, but the string functions are used too often */
+#if defined(HAVE_STRING_H) || defined(STDC_HEADERS)
+#  include <string.h>
+#  define memzero(s, n)     memset ((s), 0, (n))
+#else
+#  include <strings.h>
+#  define strchr            index 
+#  define strrchr           rindex
+#  define memcpy(d, s, n)   bcopy((s), (d), (n)) 
+#  define memcmp(s1, s2, n) bcmp((s1), (s2), (n)) 
+#  define memzero(s, n)     bzero((s), (n))
+#endif
+
+#if !defined(STDC_HEADERS) && defined(HAVE_MEMORY_H)
+#  include <memory.h>
+#endif
+
+#ifndef RETSIGTYPE
+#  define RETSIGTYPE void
+#endif
+
+#define local static
+
+typedef unsigned char  uch;
+typedef unsigned short ush;
+typedef unsigned long  ulg;
+
+/* Return codes from gzip */
+#define OK      0
+#define ERROR   1
+#define WARNING 2
+
+/* Compression methods (see algorithm.doc) */
+#define STORED     0
+#define COMPRESSED 1
+#define PACKED     2
+/* methods 3 to 7 reserved */
+#define DEFLATED   8
+extern int method;         /* compression method */
+
+/* To save memory for 16 bit systems, some arrays are overlayed between
+ * the various modules:
+ * deflate:  prev+head   window      d_buf  l_buf  outbuf
+ * unlzw:    tab_prefix  tab_suffix  stack  inbuf  outbuf
+ * inflate:              window             inbuf
+ * unpack:               window             inbuf
+ * For compression, input is done in window[]. For decompression, output
+ * is done in window except for unlzw.
+ */
+
+#ifndef	INBUFSIZ
+#  define INBUFSIZ  0x8000  /* input buffer size */
+#endif
+#define INBUF_EXTRA  64     /* required by unlzw() */
+
+#ifndef	OUTBUFSIZ
+#  define OUTBUFSIZ  16384  /* output buffer size */
+#endif
+#define OUTBUF_EXTRA 2048   /* required by unlzw() */
+
+#define DIST_BUFSIZE 0x8000 /* buffer for distances, see trees.c */
+
+#ifdef DYN_ALLOC
+#  define EXTERN(type, array)  extern type * near array
+#  define DECLARE(type, array, size)  type * near array
+#  define ALLOC(type, array, size) { \
+      array = (type*)fcalloc((unsigned)(((size)+1L)/2), 2*sizeof(type)); \
+      if (array == NULL) error("insufficient memory"); \
+   }
+#  define FREE(array) {if (array != NULL) fcfree(array), array=NULL;}
+#else
+#  define EXTERN(type, array)  extern type array[]
+#  define DECLARE(type, array, size)  type array[size]
+#  define ALLOC(type, array, size)
+#  define FREE(array)
+#endif
+
+EXTERN(uch, inbuf);          /* input buffer */
+EXTERN(uch, outbuf);         /* output buffer */
+EXTERN(ush, d_buf);          /* buffer for distances, see trees.c */
+EXTERN(uch, window);         /* Sliding window and suffix table (unlzw) */
+#define tab_suffix window
+#ifndef MAXSEG_64K
+#  define tab_prefix prev    /* hash link (see deflate.c) */
+#  define head (prev+WSIZE)  /* hash head (see deflate.c) */
+   EXTERN(ush, tab_prefix);  /* prefix code (see unlzw.c) */
+#else
+#  define tab_prefix0 prev
+#  define head tab_prefix1
+   EXTERN(ush, tab_prefix0); /* prefix for even codes */
+   EXTERN(ush, tab_prefix1); /* prefix for odd  codes */
+#endif
+
+extern unsigned insize; /* valid bytes in inbuf */
+extern unsigned inptr;  /* index of next byte to be processed in inbuf */
+extern unsigned outcnt; /* bytes in output buffer */
+
+extern long bytes_in;   /* number of input bytes */
+extern long bytes_out;  /* number of output bytes */
+extern long overhead;   /* number of bytes in gzip header */
+
+#define isize bytes_in
+/* for compatibility with old zip sources (to be cleaned) */
+
+extern int  ifd;        /* input file descriptor */
+extern int  ofd;        /* output file descriptor */
+extern char ifname[];   /* input filename or "stdin" */
+extern char ofname[];   /* output filename or "stdout" */
+
+extern ulg time_stamp;  /* original time stamp (modification time) */
+extern long ifile_size; /* input file size, -1 for devices (debug only) */
+
+extern int exit_code;   /* program exit code */
+
+typedef int file_t;     /* Do not use stdio */
+#define NO_FILE  (-1)   /* in memory compression */
+
+
+#define	GZIP_MAGIC     "\037\213" /* Magic header for gzip files, 1F 8B */
+#define	OLD_GZIP_MAGIC "\037\236" /* Magic header for gzip 0.5 = freeze 1.x */
+#define	PKZIP_MAGIC  "PK\003\004" /* Magic header for pkzip files */
+#define	PACK_MAGIC     "\037\036" /* Magic header for packed files */
+
+/* gzip flag byte */
+#define ASCII_FLAG   0x01 /* bit 0 set: file probably ascii text */
+#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
+#define EXTRA_FIELD  0x04 /* bit 2 set: extra field present */
+#define ORIG_NAME    0x08 /* bit 3 set: original file name present */
+#define COMMENT      0x10 /* bit 4 set: file comment present */
+#define ENCRYPTED    0x20 /* bit 5 set: file is encrypted */
+#define RESERVED     0xC0 /* bit 6,7:   reserved */
+
+/* internal file attribute */
+#define UNKNOWN (-1)
+#define BINARY  0
+#define ASCII   1
+
+#ifndef WSIZE
+#  define WSIZE 0x8000     /* window size--must be a power of two, and */
+#endif                     /*  at least 32K for zip's deflate method */
+
+#define MIN_MATCH  3
+#define MAX_MATCH  258
+/* The minimum and maximum match lengths */
+
+#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
+/* Minimum amount of lookahead, except at the end of the input file.
+ * See deflate.c for comments about the MIN_MATCH+1.
+ */
+
+#define MAX_DIST  (WSIZE-MIN_LOOKAHEAD)
+/* In order to simplify the code, particularly on 16 bit machines, match
+ * distances are limited to MAX_DIST instead of WSIZE.
+ */
+
+extern int decrypt;        /* flag to turn on decryption */
+extern int save_orig_name; /* set if original name must be saved */
+extern int verbose;        /* be verbose (-v) */
+extern int level;          /* compression level */
+extern int test;           /* check .z file integrity */
+extern int to_stdout;      /* output to stdout (-c) */
+
+#define get_byte()  (inptr < insize ? inbuf[inptr++] : fill_inbuf())
+
+/* put_byte is used for the compressed output, put_char for the
+ * uncompressed output. However unlzw() uses window for its
+ * suffix table instead of its output buffer, so it does not use put_char.
+ * (to be cleaned up).
+ */
+#define put_byte(c) {outbuf[outcnt++]=(uch)(c); if (outcnt==OUTBUFSIZ)\
+   flush_outbuf();}
+#define put_char(c) {window[outcnt++]=(uch)(c); if (outcnt==WSIZE)\
+   flush_window();}
+
+/* Output a 16 bit value, lsb first */
+#define put_short(w) \
+{ if (outcnt < OUTBUFSIZ-2) { \
+    outbuf[outcnt++] = (uch) ((w) & 0xff); \
+    outbuf[outcnt++] = (uch) ((ush)(w) >> 8); \
+  } else { \
+    put_byte((uch)((w) & 0xff)); \
+    put_byte((uch)((ush)(w) >> 8)); \
+  } \
+}
+
+/* Output a 32 bit value to the bit stream, lsb first */
+#define put_long(n) { \
+    put_short((n) & 0xffff); \
+    put_short(((ulg)(n)) >> 16); \
+}
+
+#define seekable()    0  /* force sequential output */
+#define translate_eol 0  /* no option -a yet */
+
+#define tolow(c)  (isupper(c) ? (c)-'A'+'a' : (c))    /* force to lower case */
+
+/* Macros for getting two-byte and four-byte header values */
+#define SH(p) ((ush)(uch)((p)[0]) | ((ush)(uch)((p)[1]) << 8))
+#define LG(p) ((ulg)(SH(p)) | ((ulg)(SH((p)+2)) << 16))
+
+/* Diagnostic functions */
+#ifdef DEBUG
+#  define Assert(cond,msg) {if(!(cond)) error(msg);}
+#  define Trace(x) fprintf x
+#  define Tracev(x) {if (verbose) fprintf x ;}
+#  define Tracevv(x) {if (verbose>1) fprintf x ;}
+#  define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
+#  define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
+#else
+#  define Assert(cond,msg)
+#  define Trace(x)
+#  define Tracev(x)
+#  define Tracevv(x)
+#  define Tracec(c,x)
+#  define Tracecv(c,x)
+#endif
+
+	/* in zip.c: */
+extern void zip    OF((int in, int out));
+extern int file_read  OF((char *buf,  unsigned size));
+
+	/* in unzip.c */
+extern void unzip        OF((int in, int out));
+extern int check_zipfile OF((int in));
+
+	/* in unpack.c */
+extern void unpack        OF((int in, int out));
+
+	/* in gzip.c */
+RETSIGTYPE abort_gzip   OF((void));
+
+        /* in deflate.c */
+void lm_init OF((int pack_level, ush *flags));
+ulg  deflate OF((void));
+
+        /* in trees.c */
+void ct_init     OF((ush *attr, int *method));
+int  ct_tally    OF((int dist, int lc));
+ulg  flush_block OF((char *buf, ulg stored_len, int eof));
+
+        /* in bits.c */
+void     bi_init    OF((file_t zipfile));
+void     send_bits  OF((int value, int length));
+unsigned bi_reverse OF((unsigned value, int length));
+void     bi_windup  OF((void));
+void     copy_block OF((char *buf, unsigned len, int header));
+extern   int (*read_buf) OF((char *buf, unsigned size));
+
+	/* in util.c: */
+extern ulg  updcrc        OF((uch *s, unsigned n));
+extern void clear_bufs    OF((void));
+extern int  fill_inbuf    OF((void));
+extern void flush_outbuf  OF((void));
+extern void flush_window  OF((void));
+extern char *strlwr       OF((char *s));
+extern char *basename     OF((char *fname));
+extern char *add_envopt   OF((int *argcp, char ***argvp, char *env));
+extern void error         OF((char *m));
+extern void warn          OF((char *a, char *b));
+extern void read_error    OF((void));
+extern void write_error   OF((void));
+extern void display_ratio OF((long num, long den));
+extern voidp xmalloc      OF((unsigned int size));
+
+	/* in inflate.c */
+extern int inflate OF((void));