Mercurial > hg > CbC > CbC_gcc

annotate gcc/lto-compress.c @ 60:bd49c42ec43e

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
remove unnecessary files
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 15 Feb 2010 17:39:45 +0900
parents 77e2b8dfacca
children b7f97abdc517
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55
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1 /* LTO IL compression streams.
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2
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3 Copyright 2009 Free Software Foundation, Inc.
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4 Contributed by Simon Baldwin <simonb@google.com>
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by
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10 the Free Software Foundation; either version 3, or (at your option)
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11 any later version.
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12
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13 GCC is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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16 License for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with GCC; see the file COPYING3. If not see
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20 <http://www.gnu.org/licenses/>. */
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21
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22 #include "config.h"
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23 #include "system.h"
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24 /* zlib.h includes other system headers. Those headers may test feature
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25 test macros. config.h may define feature test macros. For this reason,
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26 zlib.h needs to be included after, rather than before, config.h and
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27 system.h. */
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28 #include <zlib.h>
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29 #include "coretypes.h"
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30 #include "tree.h"
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31 #include "diagnostic.h"
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32 #include "errors.h"
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33 #include "langhooks.h"
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34 #include "lto-streamer.h"
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35 #include "lto-compress.h"
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36
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37 /* Compression stream structure, holds the flush callback and opaque token,
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38 the buffered data, and a note of whether compressing or uncompressing. */
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39
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40 struct lto_compression_stream
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41 {
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42 void (*callback) (const char *, unsigned, void *);
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43 void *opaque;
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44 char *buffer;
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45 size_t bytes;
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46 size_t allocation;
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47 bool is_compression;
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48 };
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49
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50 /* Overall compression constants for zlib. */
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51
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52 static const size_t Z_BUFFER_LENGTH = 4096;
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53 static const size_t MIN_STREAM_ALLOCATION = 1024;
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54
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55 /* For zlib, allocate SIZE count of ITEMS and return the address, OPAQUE
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56 is unused. */
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57
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58 static void *
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59 lto_zalloc (void *opaque, unsigned items, unsigned size)
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60 {
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61 gcc_assert (opaque == Z_NULL);
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62 return xmalloc (items * size);
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63 }
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64
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65 /* For zlib, free memory at ADDRESS, OPAQUE is unused. */
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66
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67 static void
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68 lto_zfree (void *opaque, void *address)
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69 {
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70 gcc_assert (opaque == Z_NULL);
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71 free (address);
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72 }
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73
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74 /* Return a zlib compression level that zlib will not reject. Normalizes
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75 the compression level from the command line flag, clamping non-default
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76 values to the appropriate end of their valid range. */
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77
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78 static int
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79 lto_normalized_zlib_level (void)
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80 {
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81 int level = flag_lto_compression_level;
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82
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83 if (level != Z_DEFAULT_COMPRESSION)
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84 {
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85 if (level < Z_NO_COMPRESSION)
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86 level = Z_NO_COMPRESSION;
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87 else if (level > Z_BEST_COMPRESSION)
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88 level = Z_BEST_COMPRESSION;
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89 }
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90
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91 return level;
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92 }
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93
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94 /* Create a new compression stream, with CALLBACK flush function passed
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95 OPAQUE token, IS_COMPRESSION indicates if compressing or uncompressing. */
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96
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97 static struct lto_compression_stream *
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98 lto_new_compression_stream (void (*callback) (const char *, unsigned, void *),
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99 void *opaque, bool is_compression)
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100 {
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101 struct lto_compression_stream *stream
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102 = (struct lto_compression_stream *) xmalloc (sizeof (*stream));
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103
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104 memset (stream, 0, sizeof (*stream));
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105 stream->callback = callback;
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106 stream->opaque = opaque;
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107 stream->is_compression = is_compression;
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108
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109 return stream;
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110 }
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111
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112 /* Append NUM_CHARS from address BASE to STREAM. */
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113
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114 static void
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115 lto_append_to_compression_stream (struct lto_compression_stream *stream,
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116 const char *base, size_t num_chars)
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117 {
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118 size_t required = stream->bytes + num_chars;
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119
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120 if (stream->allocation < required)
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121 {
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122 if (stream->allocation == 0)
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123 stream->allocation = MIN_STREAM_ALLOCATION;
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124 while (stream->allocation < required)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
125 stream->allocation *= 2;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
126
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
127 stream->buffer = (char *) xrealloc (stream->buffer, stream->allocation);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
128 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
129
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
130 memcpy (stream->buffer + stream->bytes, base, num_chars);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
131 stream->bytes += num_chars;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
132 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
133
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
134 /* Free the buffer and memory associated with STREAM. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
135
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
136 static void
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
137 lto_destroy_compression_stream (struct lto_compression_stream *stream)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
138 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
139 free (stream->buffer);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
140 free (stream);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
141 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
142
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
143 /* Return a new compression stream, with CALLBACK flush function passed
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
144 OPAQUE token. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
145
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
146 struct lto_compression_stream *
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
147 lto_start_compression (void (*callback) (const char *, unsigned, void *),
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
148 void *opaque)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
149 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
150 return lto_new_compression_stream (callback, opaque, true);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
151 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
152
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
153 /* Append NUM_CHARS from address BASE to STREAM. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
154
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
155 void
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
156 lto_compress_block (struct lto_compression_stream *stream,
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
157 const char *base, size_t num_chars)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
158 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
159 gcc_assert (stream->is_compression);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
160
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
161 lto_append_to_compression_stream (stream, base, num_chars);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
162 lto_stats.num_output_il_bytes += num_chars;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
163 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
164
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
165 /* Finalize STREAM compression, and free stream allocations. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
166
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
167 void
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
168 lto_end_compression (struct lto_compression_stream *stream)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
169 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
170 unsigned char *cursor = (unsigned char *) stream->buffer;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
171 size_t remaining = stream->bytes;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
172 const size_t outbuf_length = Z_BUFFER_LENGTH;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
173 unsigned char *outbuf = (unsigned char *) xmalloc (outbuf_length);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
174 z_stream out_stream;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
175 size_t compressed_bytes = 0;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
176 int status;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
177
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
178 gcc_assert (stream->is_compression);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
179
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
180 out_stream.next_out = outbuf;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
181 out_stream.avail_out = outbuf_length;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
182 out_stream.next_in = cursor;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
183 out_stream.avail_in = remaining;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
184 out_stream.zalloc = lto_zalloc;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
185 out_stream.zfree = lto_zfree;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
186 out_stream.opaque = Z_NULL;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
187
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
188 status = deflateInit (&out_stream, lto_normalized_zlib_level ());
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
189 if (status != Z_OK)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
190 internal_error ("compressed stream: %s", zError (status));
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
191
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
192 do
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
193 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
194 size_t in_bytes, out_bytes;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
195
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
196 status = deflate (&out_stream, Z_FINISH);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
197 if (status != Z_OK && status != Z_STREAM_END)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
198 internal_error ("compressed stream: %s", zError (status));
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
199
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
200 in_bytes = remaining - out_stream.avail_in;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
201 out_bytes = outbuf_length - out_stream.avail_out;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
202
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
203 stream->callback ((const char *) outbuf, out_bytes, stream->opaque);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
204 lto_stats.num_compressed_il_bytes += out_bytes;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
205 compressed_bytes += out_bytes;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
206
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
207 cursor += in_bytes;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
208 remaining -= in_bytes;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
209
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
210 out_stream.next_out = outbuf;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
211 out_stream.avail_out = outbuf_length;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
212 out_stream.next_in = cursor;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
213 out_stream.avail_in = remaining;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
214 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
215 while (status != Z_STREAM_END);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
216
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
217 status = deflateEnd (&out_stream);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
218 if (status != Z_OK)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
219 internal_error ("compressed stream: %s", zError (status));
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
220
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
221 lto_destroy_compression_stream (stream);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
222 free (outbuf);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
223 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
224
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
225 /* Return a new uncompression stream, with CALLBACK flush function passed
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
226 OPAQUE token. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
227
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
228 struct lto_compression_stream *
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
229 lto_start_uncompression (void (*callback) (const char *, unsigned, void *),
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
230 void *opaque)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
231 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
232 return lto_new_compression_stream (callback, opaque, false);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
233 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
234
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
235 /* Append NUM_CHARS from address BASE to STREAM. */
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
236
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
237 void
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
238 lto_uncompress_block (struct lto_compression_stream *stream,
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
239 const char *base, size_t num_chars)
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
240 {
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
241 gcc_assert (!stream->is_compression);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
242
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
243 lto_append_to_compression_stream (stream, base, num_chars);
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
244 lto_stats.num_input_il_bytes += num_chars;
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
245 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
246
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
247 /* Finalize STREAM uncompression, and free stream allocations.
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
248
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
249 Because of the way LTO IL streams are compressed, there may be several
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
250 concatenated compressed segments in the accumulated data, so for this
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
251 function we iterate decompressions until no data remains. */
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
252
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
253 void
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
254 lto_end_uncompression (struct lto_compression_stream *stream)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
255 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
256 unsigned char *cursor = (unsigned char *) stream->buffer;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
257 size_t remaining = stream->bytes;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
258 const size_t outbuf_length = Z_BUFFER_LENGTH;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
259 unsigned char *outbuf = (unsigned char *) xmalloc (outbuf_length);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
260 size_t uncompressed_bytes = 0;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
261
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
262 gcc_assert (!stream->is_compression);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
263
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
264 while (remaining > 0)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
265 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
266 z_stream in_stream;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
267 size_t out_bytes;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
268 int status;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
269
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
270 in_stream.next_out = outbuf;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
271 in_stream.avail_out = outbuf_length;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
272 in_stream.next_in = cursor;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
273 in_stream.avail_in = remaining;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
274 in_stream.zalloc = lto_zalloc;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
275 in_stream.zfree = lto_zfree;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
276 in_stream.opaque = Z_NULL;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
277
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
278 status = inflateInit (&in_stream);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
279 if (status != Z_OK)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
280 internal_error ("compressed stream: %s", zError (status));
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
281
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
282 do
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
283 {
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
284 size_t in_bytes;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
285
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
286 status = inflate (&in_stream, Z_SYNC_FLUSH);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
287 if (status != Z_OK && status != Z_STREAM_END)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
288 internal_error ("compressed stream: %s", zError (status));
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
289
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
290 in_bytes = remaining - in_stream.avail_in;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
291 out_bytes = outbuf_length - in_stream.avail_out;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
292
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
293 stream->callback ((const char *) outbuf, out_bytes, stream->opaque);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
294 lto_stats.num_uncompressed_il_bytes += out_bytes;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
295 uncompressed_bytes += out_bytes;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
296
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
297 cursor += in_bytes;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
298 remaining -= in_bytes;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
299
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
300 in_stream.next_out = outbuf;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
301 in_stream.avail_out = outbuf_length;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
302 in_stream.next_in = cursor;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
303 in_stream.avail_in = remaining;
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
304 }
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
305 while (!(status == Z_STREAM_END && out_bytes == 0));
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
306
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
307 status = inflateEnd (&in_stream);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
308 if (status != Z_OK)
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
309 internal_error ("compressed stream: %s", zError (status));
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
310 }
77e2b8dfacca update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
311
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
312 lto_destroy_compression_stream (stream);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
313 free (outbuf);
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
diff changeset
314 }