u32 GBIMicrocode_DetectVersion( u32 code_base, u32 code_size, u32 data_base, u32 data_size, CustomMicrocodeCallback custom_callback )
{
// I think only checking code_base should be enough..
u32 idx = code_base + data_base;
// Cheap way to cache ucodes, don't check for strings (too slow!) but check last used ucode entries which is alot faster than string comparison.
// This only needed for GBI1/2/SDEX ucodes that use LoadUcode, else we only check when code_base changes, which usually never happens
//
u32 i;
for( i = 0; i < MAX_UCODE_CACHE_ENTRIES; i++ )
{
const UcodeInfo &used( gUcodeInfo[ i ] );
// If this returns false, it means this entry is free to use
if( used.set == false )
break;
if( used.index == idx )
return used.ucode;
}
//
// Try to find the version string in the microcode data. This is faster than calculating a crc of the code
//
char str[256] = "";
GBIMicrocode_DetectVersionString( data_base, data_size, str, 256 );
// It wasn't the same as the last time around, we'll hash it and check if is a custom ucode.
//
u32 code_hash = GBIMicrocode_MicrocodeHash( code_base, code_size );
u32 ucode_version = GBI_0;
u32 ucode_offset = ~0;
for ( u32 i = 0; i < ARRAYSIZE(gMicrocodeData); i++ )
{
if ( code_hash == gMicrocodeData[i].hash )
{
//DBGConsole_Msg(0, "Ucode has been Detected in Array :[M\"%s\", Ucode %d]", str, gMicrocodeData[ i ].ucode);
ucode_version = gMicrocodeData[ i ].ucode;
ucode_offset = gMicrocodeData[ i ].offset;
}
}
if( ucode_version != GBI_0 )
{
// If this a custom ucode, let's build an array based from ucode_offset
custom_callback( ucode_version, ucode_offset );
}
else
{
//
// If it wasn't a custom ucode
// See if we can identify it by string, if no match was found set default for Fast3D ucode
//
const char *ucodes[] = { "F3", "L3", "S2DEX" };
char *match = 0;
for(u32 j = 0; j<3;j++)
{
if( (match = strstr(str, ucodes[j])) )
break;
}
if( match )
{
if( strstr(match, "fifo") || strstr(match, "xbus") )
{
if( !strncmp(match, "S2DEX", 5) )
ucode_version = GBI_2_S2DEX;
else
ucode_version = GBI_2;
}
else
{
if( !strncmp(match, "S2DEX", 5) )
ucode_version = GBI_1_S2DEX;
else
ucode_version = GBI_1;
}
}
}
//
// Retain used ucode info which will be cached
//
gUcodeInfo[ i ].index = idx;
gUcodeInfo[ i ].ucode = ucode_version;
gUcodeInfo[ i ].set = true;
// DBGConsole_Msg(0,"Detected %s Ucode is: [M Ucode %d, 0x%08x, \"%s\", \"%s\"]",ucode_offset == u32(~0) ? "" :"Custom", ucode_version, code_hash, str, g_ROM.settings.GameName.c_str() );
return ucode_version;
}
UcodeInfo GBIMicrocode_DetectVersion( u32 code_base, u32 code_size, u32 data_base, u32 data_size )
{
// I think only checking code_base should be enough..
u32 address = code_base + data_base;
// Cheap way to cache ucodes, don't check for strings (too slow!) but check last used ucode entries which is alot faster than string comparison.
// This only needed for GBI1/2/SDEX ucodes that use LoadUcode, else we only check when code_base changes, which usually never happens
//
u32 i;
for( i = 0; i < MAX_UCODE_CACHE_ENTRIES; i++ )
{
// If this returns false, it means this entry is free to use
if (gUcodeInfo[i].set == false)
break;
if (gUcodeInfo[i].address == address)
return gUcodeInfo[i];
}
//
// Try to find the version string in the microcode data. This is faster than calculating a crc of the code
//
char str[256] = "";
GBIMicrocode_DetectVersionString( data_base, data_size, str, 256 );
// It wasn't the same as the last time around, we'll hash it and check if is a custom ucode.
//
u32 code_hash = GBIMicrocode_MicrocodeHash( code_base, code_size );
for ( u32 x = 0; x < ARRAYSIZE(gMicrocodeData); x++ )
{
if ( code_hash == gMicrocodeData[x].hash )
{
//DBGConsole_Msg(0, "Ucode has been Detected in Array :[M\"%s\", Ucode %d]", str, gMicrocodeData[ i ].ucode);
GBIMicrocode_SetCustom(gMicrocodeData[x].ucode, gMicrocodeData[x].offset);
gUcodeInfo[i].set = true;
gUcodeInfo[i].func = gCustomInstruction;
gUcodeInfo[i].stride = gMicrocodeData[x].stride;
gUcodeInfo[i].address = address;
return gUcodeInfo[i];
}
}
//
// If it wasn't a custom ucode
// See if we can identify it by string, if no match was found set default for Fast3D ucode
//
const char *ucodes[] = { "F3", "L3", "S2DEX" };
char *match = 0;
for(u32 j = 0; j<3;j++)
{
if( (match = strstr(str, ucodes[j])) )
break;
}
u32 ucode_stride;
u32 ucode_version;
if (!match)
{
ucode_stride = 10;
ucode_version = GBI_0;
}
else
{
ucode_stride = 2;
if( strstr(match, "fifo") || strstr(match, "xbus") )
{
if( !strncmp(match, "S2DEX", 5) )
ucode_version = GBI_2_S2DEX;
else
ucode_version = GBI_2;
}
else
{
if( !strncmp(match, "S2DEX", 5) )
ucode_version = GBI_1_S2DEX;
else
ucode_version = GBI_1;
}
}
gUcodeInfo[i].set = true;
gUcodeInfo[i].func = gNormalInstruction[ucode_version];
gUcodeInfo[i].stride = ucode_stride;
gUcodeInfo[i].address = address;
// DBGConsole_Msg(0,"Detected %s Ucode is: [M Ucode %d, 0x%08x, \"%s\", \"%s\"]",ucode_offset == u32(~0) ? "" :"Custom", ucode_version, code_hash, str, g_ROM.settings.GameName.c_str() );
return gUcodeInfo[i];
}
