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author | Sean Bartell <wingedtachikoma@gmail.com> | 2011-06-25 21:32:25 -0400 |
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committer | Nils Wallménius <nils@rockbox.org> | 2012-04-25 22:13:20 +0200 |
commit | f40bfc9267b13b54e6379dfe7539447662879d24 (patch) | |
tree | 9b20069d5e62809ff434061ad730096836f916f2 /lib/rbcodec/codecs/libgme/gb_cpu.c | |
parent | a0009907de7a0107d49040d8a180f140e2eff299 (diff) | |
download | rockbox-f40bfc9267b13b54e6379dfe7539447662879d24.tar.gz rockbox-f40bfc9267b13b54e6379dfe7539447662879d24.zip |
Add codecs to librbcodec.
Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97
Reviewed-on: http://gerrit.rockbox.org/137
Reviewed-by: Nils Wallménius <nils@rockbox.org>
Tested-by: Nils Wallménius <nils@rockbox.org>
Diffstat (limited to 'lib/rbcodec/codecs/libgme/gb_cpu.c')
-rw-r--r-- | lib/rbcodec/codecs/libgme/gb_cpu.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libgme/gb_cpu.c b/lib/rbcodec/codecs/libgme/gb_cpu.c new file mode 100644 index 0000000000..4b2df63a17 --- /dev/null +++ b/lib/rbcodec/codecs/libgme/gb_cpu.c | |||
@@ -0,0 +1,53 @@ | |||
1 | // Game_Music_Emu 0.6-pre. http://www.slack.net/~ant/ | ||
2 | |||
3 | #include "gb_cpu.h" | ||
4 | |||
5 | #include "blargg_endian.h" | ||
6 | |||
7 | /* Copyright (C) 2003-2008 Shay Green. This module is free software; you | ||
8 | can redistribute it and/or modify it under the terms of the GNU Lesser | ||
9 | General Public License as published by the Free Software Foundation; either | ||
10 | version 2.1 of the License, or (at your option) any later version. This | ||
11 | module is distributed in the hope that it will be useful, but WITHOUT ANY | ||
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | ||
13 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more | ||
14 | details. You should have received a copy of the GNU Lesser General Public | ||
15 | License along with this module; if not, write to the Free Software Foundation, | ||
16 | Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ | ||
17 | |||
18 | #include "blargg_source.h" | ||
19 | |||
20 | static inline void set_code_page( struct Gb_Cpu* this, int i, void* p ) | ||
21 | { | ||
22 | byte* p2 = STATIC_CAST(byte*,p) - GB_CPU_OFFSET( i * page_size ); | ||
23 | this->cpu_state_.code_map [i] = p2; | ||
24 | this->cpu_state->code_map [i] = p2; | ||
25 | } | ||
26 | |||
27 | void Cpu_reset( struct Gb_Cpu* this, void* unmapped ) | ||
28 | { | ||
29 | check( this->cpu_state == &this->cpu_state_ ); | ||
30 | this->cpu_state = &this->cpu_state_; | ||
31 | |||
32 | this->cpu_state_.time = 0; | ||
33 | |||
34 | int i; | ||
35 | for ( i = 0; i < page_count + 1; ++i ) | ||
36 | set_code_page( this, i, unmapped ); | ||
37 | |||
38 | memset( &this->r, 0, sizeof this->r ); | ||
39 | |||
40 | blargg_verify_byte_order(); | ||
41 | } | ||
42 | |||
43 | void Cpu_map_code( struct Gb_Cpu* this, addr_t start, int size, void* data ) | ||
44 | { | ||
45 | // address range must begin and end on page boundaries | ||
46 | require( start % page_size == 0 ); | ||
47 | require( size % page_size == 0 ); | ||
48 | require( start + size <= mem_size ); | ||
49 | |||
50 | int offset; | ||
51 | for ( offset = 0; offset < size; offset += page_size ) | ||
52 | set_code_page( this, (start + offset) >> page_bits, STATIC_CAST(char*,data) + offset ); | ||
53 | } | ||