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(3DS) auto-extract /3ds/dspfirm.cdc from /3ds/code.bin when needed/

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This commit is contained in:
aliaspider 2015-10-27 19:50:39 +01:00
parent 98f84b9c8e
commit 39c5b683b8
1 changed files with 52 additions and 2 deletions
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54
frontend/drivers/platform_ctr.c
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@ -46,6 +46,8 @@ void dump_result_value(Result val);
#define DEBUG_VAR(X) printf( "%-20s: 0x%08X\n", #X, (u32)(X))
#define DEBUG_VAR64(X) printf( #X"\r\t\t\t\t : 0x%016llX\n", (u64)(X))
#define DEBUG_ERROR(X) do{if(X)dump_result_value(X)}while(0)
#define PRINTFPOS(X,Y) "\x1b["#X";"#Y"H"
#define PRINTFPOS_STR(X,Y) "\x1b["X";"Y"H"
#endif
#define CTR_APPMEMALLOC_PTR ((u32*)0x1FF80040)
@ -238,8 +240,55 @@ static void frontend_ctr_shutdown(bool unused)
(void)unused;
}
#define PRINTFPOS(X,Y) "\x1b["#X";"#Y"H"
#define PRINTFPOS_STR(X,Y) "\x1b["X";"Y"H"
static void ctr_check_dspfirm(void)
{
FILE* dsp_fp = fopen("sdmc:/3ds/dspfirm.cdc", "rb");
if(dsp_fp)
fclose(dsp_fp);
else
{
uint32_t* code_buffer;
uint32_t* ptr;
FILE* code_fp;
size_t code_size;
const uint32_t dsp1_magic = 0x31505344; /* "DSP1" */
code_fp =fopen("sdmc:/3ds/code.bin", "rb");
if(code_fp)
{
fseek(code_fp, 0, SEEK_END);
code_size = ftell(code_fp);
fseek(code_fp, 0, SEEK_SET);
code_buffer = (uint32_t*) malloc(code_size);
if(code_buffer)
{
fread(code_buffer, 1, code_size, code_fp);
for (ptr = code_buffer + 0x40; ptr < (code_buffer + (code_size >> 2)); ptr++)
{
if (*ptr == dsp1_magic)
{
size_t dspfirm_size = ptr[1];
ptr -= 0x40;
if ((ptr + (dspfirm_size >> 2)) > (code_buffer + (code_size >> 2)))
break;
dsp_fp = fopen("sdmc:/3ds/dspfirm.cdc", "wb");
if(!dsp_fp)
break;
fwrite(ptr, 1, dspfirm_size, dsp_fp);
fclose(dsp_fp);
break;
}
}
free(code_buffer);
}
fclose(code_fp);
}
}
}
static void frontend_ctr_init(void *data)
{
@ -262,6 +311,7 @@ static void frontend_ctr_init(void *data)
audio_ctr_csnd = audio_ctr_dsp;
audio_ctr_dsp = audio_null;
}
ctr_check_dspfirm();
if(ndspInit() != 0)
*dsp_audio_driver = audio_null;
initCfgu();