mirror of
https://github.com/wiidev/usbloadergx.git
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75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
// this code was contributed by shagkur of the devkitpro team, thx!
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#include <stdio.h>
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#include <string.h>
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#include <gccore.h>
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#include <ogcsys.h>
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typedef struct _dolheader {
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u32 text_pos[7];
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u32 data_pos[11];
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u32 text_start[7];
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u32 data_start[11];
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u32 text_size[7];
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u32 data_size[11];
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u32 bss_start;
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u32 bss_size;
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u32 entry_point;
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} dolheader;
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u32 load_dol_image (void *dolstart) {
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u32 i;
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dolheader *dolfile;
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if (dolstart) {
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dolfile = (dolheader *) dolstart;
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for (i = 0; i < 7; i++) {
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if ((!dolfile->text_size[i]) ||
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(dolfile->text_start[i] < 0x100))
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continue;
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/*printf ("loading text section %u @ 0x%08x "
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"(0x%08x bytes)\n",
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i, dolfile->text_start[i],
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dolfile->text_size[i]);*/
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VIDEO_WaitVSync();
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ICInvalidateRange ((void *) dolfile->text_start[i],
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dolfile->text_size[i]);
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memmove ((void *) dolfile->text_start[i],
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dolstart+dolfile->text_pos[i],
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dolfile->text_size[i]);
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}
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for(i = 0; i < 11; i++) {
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if ((!dolfile->data_size[i]) ||
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(dolfile->data_start[i] < 0x100))
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continue;
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/*printf ("loading data section %u @ 0x%08x "
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"(0x%08x bytes)\n",
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i, dolfile->data_start[i],
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dolfile->data_size[i]);*/
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VIDEO_WaitVSync();
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memmove ((void*) dolfile->data_start[i],
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dolstart+dolfile->data_pos[i],
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dolfile->data_size[i]);
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DCFlushRangeNoSync ((void *) dolfile->data_start[i],
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dolfile->data_size[i]);
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}
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//printf ("clearing bss\n");
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VIDEO_WaitVSync();
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memset ((void *) dolfile->bss_start, 0, dolfile->bss_size);
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DCFlushRange((void *) dolfile->bss_start, dolfile->bss_size);
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return dolfile->entry_point;
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}
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return 0;
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}
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