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* Fixed a bug with QVM loading on big endian architectures

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This commit is contained in:
Tim Angus 2005-10-26 17:09:50 +00:00
parent d5af2e3d45
commit 9f55ae2dce
1 changed files with 29 additions and 20 deletions
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49
code/qcommon/vm.c
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@ -373,33 +373,42 @@ vmHeader_t *VM_LoadQVM( vm_t *vm, qboolean alloc ) {
return NULL; return NULL;
} }
// byte swap the header if( LittleLong( header->vmMagic ) == VM_MAGIC_VER2 ) {
for ( i = 0 ; i < sizeof( *header ) / 4 ; i++ ) {
((int *)header)[i] = LittleLong( ((int *)header)[i] );
}
if( header->vmMagic == VM_MAGIC_VER2 ) {
Com_Printf( "...which has vmMagic VM_MAGIC_VER2\n" ); Com_Printf( "...which has vmMagic VM_MAGIC_VER2\n" );
// byte swap the header
for ( i = 0 ; i < sizeof( vmHeader_t ) / 4 ; i++ ) {
((int *)header)[i] = LittleLong( ((int *)header)[i] );
}
// validate // validate
if ( header->vmMagic != VM_MAGIC_VER2 if ( header->jtrgLength < 0
|| header->jtrgLength < 0 || header->bssLength < 0
|| header->bssLength < 0 || header->dataLength < 0
|| header->dataLength < 0 || header->litLength < 0
|| header->litLength < 0 || header->codeLength <= 0 ) {
VM_Free( vm );
Com_Error( ERR_FATAL, "%s has bad header", filename );
}
} else if( LittleLong( header->vmMagic ) == VM_MAGIC ) {
// byte swap the header
// sizeof( vmHeader_t ) - sizeof( int ) is the 1.32b vm header size
for ( i = 0 ; i < ( sizeof( vmHeader_t ) - sizeof( int ) ) / 4 ; i++ ) {
((int *)header)[i] = LittleLong( ((int *)header)[i] );
}
// validate
if ( header->bssLength < 0
|| header->dataLength < 0
|| header->litLength < 0
|| header->codeLength <= 0 ) { || header->codeLength <= 0 ) {
VM_Free( vm ); VM_Free( vm );
Com_Error( ERR_FATAL, "%s has bad header", filename ); Com_Error( ERR_FATAL, "%s has bad header", filename );
} }
} else { } else {
// validate VM_Free( vm );
if ( header->vmMagic != VM_MAGIC Com_Error( ERR_FATAL, "%s does not have a recognisable "
|| header->bssLength < 0 "magic number in its header", filename );
|| header->dataLength < 0
|| header->litLength < 0
|| header->codeLength <= 0 ) {
VM_Free( vm );
Com_Error( ERR_FATAL, "%s has bad header", filename );
}
} }
// round up to next power of 2 so all data operations can // round up to next power of 2 so all data operations can