| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2002 Ben Parnell |
| 5 | * |
| 6 | * This program 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 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program 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. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | /* Contains file I/O functions that write/read data */ |
| 22 | /* LSB first. */ |
| 23 | |
| 24 | |
| 25 | #include <stdio.h> |
| 26 | #include "types.h" |
| 27 | #include "endian.h" |
| 28 | |
| 29 | static uint8 s[4]; |
| 30 | |
| 31 | int write16(uint16 b, FILE *fp) |
| 32 | { |
| 33 | s[0]=b; |
| 34 | s[1]=b>>8; |
| 35 | return((fwrite(s,1,2,fp)<2)?0:2); |
| 36 | } |
| 37 | |
| 38 | int write32(uint32 b, FILE *fp) |
| 39 | { |
| 40 | s[0]=b; |
| 41 | s[1]=b>>8; |
| 42 | s[2]=b>>16; |
| 43 | s[3]=b>>24; |
| 44 | return((fwrite(s,1,4,fp)<4)?0:4); |
| 45 | } |
| 46 | |
| 47 | int read32(void *Bufo, FILE *fp) |
| 48 | { |
| 49 | uint32 buf; |
| 50 | if(fread(&buf,1,4,fp)<4) |
| 51 | return 0; |
| 52 | #ifdef LSB_FIRST |
| 53 | *(uint32*)Bufo=buf; |
| 54 | #else |
| 55 | *(uint32*)Bufo=((buf&0xFF)<<24)|((buf&0xFF00)<<8)|((buf&0xFF0000)>>8)|((buf&0xFF000000)>>24); |
| 56 | #endif |
| 57 | return 1; |
| 58 | } |
| 59 | |
| 60 | int read16(char *d, FILE *fp) |
| 61 | { |
| 62 | #ifdef LSB_FIRST |
| 63 | return((fread(d,1,2,fp)<2)?0:2); |
| 64 | #else |
| 65 | int ret; |
| 66 | ret=fread(d+1,1,1,fp); |
| 67 | ret+=fread(d,1,1,fp); |
| 68 | return ret<2?0:2; |
| 69 | #endif |
| 70 | } |
| 71 | |