diff options
Diffstat (limited to 'qemu/roms/openbios/libc/diskio.c')
| -rw-r--r-- | qemu/roms/openbios/libc/diskio.c | 248 |
1 files changed, 0 insertions, 248 deletions
diff --git a/qemu/roms/openbios/libc/diskio.c b/qemu/roms/openbios/libc/diskio.c deleted file mode 100644 index 23f38ebb2..000000000 --- a/qemu/roms/openbios/libc/diskio.c +++ /dev/null @@ -1,248 +0,0 @@ -/* - * Creation Date: <2003/12/07 19:36:00 samuel> - * Time-stamp: <2004/01/07 19:28:43 samuel> - * - * <diskio.c> - * - * I/O wrappers - * - * Copyright (C) 2003, 2004 Samuel Rydh (samuel@ibrium.se) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * version 2 - * - */ - -#include "config.h" -#include "libopenbios/bindings.h" -#include "libc/diskio.h" - -//#define CONFIG_DEBUG_DISKIO -#ifdef CONFIG_DEBUG_DISKIO -#define DPRINTF(fmt, args...) \ - do { printk(fmt , ##args); } while (0) -#else -#define DPRINTF(fmt, args...) -#endif - -typedef struct { - ihandle_t ih; - int do_close; - xt_t read_xt; - xt_t seek_xt; - - xt_t reopen_xt; - xt_t tell_xt; - xt_t get_path_xt; - xt_t get_fstype_xt; - xt_t open_nwrom_xt; - xt_t volume_name_xt; -} priv_fd_t; - -#define MAX_FD 32 -static priv_fd_t *file_descriptors[MAX_FD]; - -static int -lookup_xt( ihandle_t ih, const char *method, xt_t *xt ) -{ - if( *xt ) - return 0; - *xt = find_ih_method( method, ih ); - return (*xt) ? 0:1; -} - -int -open_ih( ihandle_t ih ) -{ - xt_t read_xt=0, seek_xt=0; - priv_fd_t *fdp; - int fd; - - if( !ih || lookup_xt(ih, "read", &read_xt) ) - return -1; - if( lookup_xt(ih, "seek", &seek_xt) ) - return -1; - - for (fd=0; fd<MAX_FD; fd++) - if(file_descriptors[fd]==NULL) - break; - if(fd==MAX_FD) - return -1; - - fdp = malloc( sizeof(*fdp) ); - /* Better clear the fd, as it - * contains valuable information - */ - memset(fdp, 0, sizeof(*fdp)); - fdp->ih = ih; - fdp->read_xt = read_xt; - fdp->seek_xt = seek_xt; - fdp->do_close = 0; - - file_descriptors[fd]=fdp; - DPRINTF("%s(0x%lx) = %d\n", __func__, (unsigned long)ih, fd); - return fd; -} - -int -open_io( const char *spec ) -{ - int fd; - ihandle_t ih = open_dev( spec ); - priv_fd_t *fdp; - - DPRINTF("%s(%s)\n", __func__, spec); - if( !ih ) - return -1; - - if( (fd=open_ih(ih)) == -1 ) { - close_dev( ih ); - return -1; - } - - fdp = file_descriptors[fd]; - fdp->do_close = 1; - - return fd; -} - -int -reopen( int fd, const char *filename ) -{ - priv_fd_t *fdp = file_descriptors[fd]; - int ret; - - if( lookup_xt(fdp->ih, "reopen", &fdp->reopen_xt) ) - return -1; - - push_str( filename ); - call_package( fdp->reopen_xt, fdp->ih ); - ret = (POP() == (ucell)-1)? 0 : -1; - - DPRINTF("%s(%d, %s) = %d\n", __func__, fd, filename, ret); - return ret; -} - -int -reopen_nwrom( int fd ) -{ - priv_fd_t *fdp = file_descriptors[fd]; - - DPRINTF("%s(%d)\n", __func__, fd); - if( lookup_xt(fdp->ih, "open-nwrom", &fdp->open_nwrom_xt) ) - return -1; - call_package( fdp->open_nwrom_xt, fdp->ih ); - return (POP() == (ucell)-1)? 0 : -1; -} - -ihandle_t -get_ih_from_fd( int fd ) -{ - priv_fd_t *fdp = file_descriptors[fd]; - return fdp->ih; -} - -const char * -get_file_path( int fd ) -{ - priv_fd_t *fdp = file_descriptors[fd]; - if( lookup_xt(fdp->ih, "get-path", &fdp->get_path_xt) ) - return NULL; - call_package( fdp->get_path_xt, fdp->ih ); - return (char*)cell2pointer(POP()); -} - -const char * -get_volume_name( int fd ) -{ - priv_fd_t *fdp = file_descriptors[fd]; - if( lookup_xt(fdp->ih, "volume-name", &fdp->volume_name_xt) ) - return NULL; - call_package( fdp->volume_name_xt, fdp->ih ); - return (char*)cell2pointer(POP()); -} - -const char * -get_fstype( int fd ) -{ - priv_fd_t *fdp = file_descriptors[fd]; - if( lookup_xt(fdp->ih, "get-fstype", &fdp->get_fstype_xt) ) - return NULL; - call_package( fdp->get_fstype_xt, fdp->ih ); - return (char*)cell2pointer(POP()); -} - -int -read_io( int fd, void *buf, size_t cnt ) -{ - priv_fd_t *fdp; - ucell ret; - - DPRINTF("%s(%d, %p, %u)\n", __func__, fd, buf, cnt); - if (fd != -1) { - fdp = file_descriptors[fd]; - - PUSH( pointer2cell(buf) ); - PUSH( cnt ); - call_package( fdp->read_xt, fdp->ih ); - ret = POP(); - - if( !ret && cnt ) - ret = -1; - } else { - ret = -1; - } - - return ret; -} - -int -seek_io( int fd, long long offs ) -{ - priv_fd_t *fdp; - - DPRINTF("%s(%d, %lld)\n", __func__, fd, offs); - if (fd != -1) { - fdp = file_descriptors[fd]; - - DPUSH( offs ); - call_package( fdp->seek_xt, fdp->ih ); - return ((((cell)POP()) >= 0)? 0 : -1); - } else { - return -1; - } -} - -long long -tell( int fd ) -{ - priv_fd_t *fdp = file_descriptors[fd]; - long long offs; - - if( lookup_xt(fdp->ih, "tell", &fdp->tell_xt) ) - return -1; - call_package( fdp->tell_xt, fdp->ih ); - offs = DPOP(); - DPRINTF("%s(%d) = %lld\n", __func__, fd, offs); - return offs; -} - -int -close_io( int fd ) -{ - priv_fd_t *fdp; - - DPRINTF("%s(%d)\n", __func__, fd); - if (fd != -1) { - fdp = file_descriptors[fd]; - - if( fdp->do_close ) - close_dev( fdp->ih ); - free( fdp ); - - file_descriptors[fd]=NULL; - } - - return 0; -} |