1 /* compress-debug.c - compress debug sections
2 Copyright (C) 2010-2014 Free Software Foundation, Inc.
4 This file is part of GAS, the GNU Assembler.
6 GAS is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to the Free
18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
24 #include "compress-debug.h"
30 /* Initialize the compression engine. */
38 static struct z_stream_s strm;
43 deflateInit (&strm, Z_DEFAULT_COMPRESSION);
45 #endif /* HAVE_ZLIB_H */
48 /* Stream the contents of a frag to the compression engine. Output
49 from the engine goes into the current frag on the obstack. */
52 compress_data (struct z_stream_s *strm ATTRIBUTE_UNUSED,
53 const char **next_in ATTRIBUTE_UNUSED,
54 int *avail_in ATTRIBUTE_UNUSED,
55 char **next_out ATTRIBUTE_UNUSED,
56 int *avail_out ATTRIBUTE_UNUSED)
64 strm->next_in = (Bytef *) (*next_in);
65 strm->avail_in = *avail_in;
66 strm->next_out = (Bytef *) (*next_out);
67 strm->avail_out = *avail_out;
69 x = deflate (strm, Z_NO_FLUSH);
73 out_size = *avail_out - strm->avail_out;
74 *next_in = (char *) (strm->next_in);
75 *avail_in = strm->avail_in;
76 *next_out = (char *) (strm->next_out);
77 *avail_out = strm->avail_out;
80 #endif /* HAVE_ZLIB_H */
83 /* Finish the compression and consume the remaining compressed output.
84 Returns -1 for error, 0 when done, 1 when more output buffer is
88 compress_finish (struct z_stream_s *strm ATTRIBUTE_UNUSED,
89 char **next_out ATTRIBUTE_UNUSED,
90 int *avail_out ATTRIBUTE_UNUSED,
91 int *out_size ATTRIBUTE_UNUSED)
99 strm->next_out = (Bytef *) (*next_out);
100 strm->avail_out = *avail_out;
102 x = deflate (strm, Z_FINISH);
104 *out_size = *avail_out - strm->avail_out;
105 *next_out = (char *) (strm->next_out);
106 *avail_out = strm->avail_out;
108 if (x == Z_STREAM_END)
113 if (strm->avail_out != 0)
116 #endif /* HAVE_ZLIB_H */