Macintosh-SW/EMILE
1
0
Fork 0
mirror of https://github.com/vivier/EMILE.git synced 2025-01-02 21:30:29 +00:00
Code Issues Projects Releases Wiki Activity

add scsi support to load_image()

Browse Source
This commit is contained in:
Laurent Vivier 2004-12-03 00:19:02 +00:00
parent 616da27146
commit 1abf16c567
1 changed files with 55 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
second/load.c
View File

@ -9,30 +9,50 @@
#include "bank.h"
#include "misc.h"
#include "glue.h"
#include "head.h"
#include "load.h"
char* load_image(int unit, unsigned long offset, unsigned long size)
#ifdef SCSI_SUPPORT
#include "scsi.h"
static char* load_container(struct emile_container* container, char* image)
{
char* base = image;
int target;
int i;
int err;
char* image;
ParamBlockRec_t param_block;
if (size == 0)
return NULL;
target = container->unit_id;
image = malloc_contiguous(size + 4);
if (image == 0)
i = 0;
while (container->blocks[i].count != 0)
{
err = scsi_READ(target, container->blocks[i].offset,
container->blocks[i].count,
image,
container->block_size * container->blocks[i].count);
if (err != noErr)
{
free(image);
return NULL;
}
image = (char*)(((unsigned long)image + 3) & 0xFFFFFFFC);
image += container->block_size * container->blocks[i].count;
i++;
}
return base;
}
#else /* SCSI_SUPPORT */
static char* load_blocks(unsigned long offset, unsigned long size, char *image)
{
int err;
ParamBlockRec_t param_block;
memset(&param_block, 0, sizeof(param_block));
param_block.ioBuffer = (unsigned long)image;
param_block.ioVRefNum = unit;
param_block.ioVRefNum = 1;
param_block.ioRefNum = -5;
param_block.ioReqCount = size;
param_block.ioPosMode = fsFromStart;
@ -47,3 +67,27 @@ char* load_image(int unit, unsigned long offset, unsigned long size)
return image;
}
#endif /* SCSI_SUPPORT */
char* load_image(unsigned long offset, unsigned long size)
{
char* image;
if (size == 0)
return NULL;
image = malloc_contiguous(size + 4);
if (image == 0)
{
free(image);
return NULL;
}
image = (char*)(((unsigned long)image + 3) & 0xFFFFFFFC);
#ifdef SCSI_SUPPORT
return load_container((struct emile_container*)offset, image);
#else
return load_blocks(offset, size, image);
#endif
}