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https://github.com/UberGames/ioef.git
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* Fixed some annoying code duplication
This commit is contained in:
Tim Angus
parent
35cb35ff61
commit
f7c82c1adc
1 changed files with 58 additions and 94 deletions
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@ -351,40 +351,25 @@ long QDECL VM_DllSyscall( long arg, ... ) {
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/*
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=================
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VM_Restart
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VM_LoadQVM
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Reload the data, but leave everything else in place
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This allows a server to do a map_restart without changing memory allocation
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Load a .qvm file
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=================
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*/
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vm_t *VM_Restart( vm_t *vm ) {
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vmHeader_t *header;
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vmHeader_t *VM_LoadQVM( vm_t *vm, vmHeader_t *header, qboolean alloc ) {
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int length;
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int dataLength;
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int i;
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char filename[MAX_QPATH];
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// DLL's can't be restarted in place
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if ( vm->dllHandle ) {
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char name[MAX_QPATH];
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long (*systemCall)( long *parms );
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systemCall = vm->systemCall;
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Q_strncpyz( name, vm->name, sizeof( name ) );
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VM_Free( vm );
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vm = VM_Create( name, systemCall, VMI_NATIVE );
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return vm;
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}
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// load the image
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Com_Printf( "VM_Restart()\n", filename );
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Com_sprintf( filename, sizeof(filename), "vm/%s.qvm", vm->name );
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Com_Printf( "Loading vm file %s...\n", filename );
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length = FS_ReadFile( filename, (void **)&header );
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if ( !header ) {
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Com_Error( ERR_DROP, "VM_Restart failed.\n" );
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Com_Printf( "Failed.\n" );
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VM_Free( vm );
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return NULL;
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}
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// byte swap the header
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@ -423,8 +408,14 @@ vm_t *VM_Restart( vm_t *vm ) {
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}
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dataLength = 1 << i;
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// clear the data
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Com_Memset( vm->dataBase, 0, dataLength );
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if( alloc ) {
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// allocate zero filled space for initialized and uninitialized data
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vm->dataBase = Hunk_Alloc( dataLength, h_high );
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vm->dataMask = dataLength - 1;
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} else {
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// clear the data
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Com_Memset( vm->dataBase, 0, dataLength );
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}
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// copy the intialized data
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Com_Memcpy( vm->dataBase, (byte *)header + header->dataOffset, header->dataLength + header->litLength );
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@ -437,7 +428,13 @@ vm_t *VM_Restart( vm_t *vm ) {
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if( header->vmMagic == VM_MAGIC_VER2 ) {
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vm->numJumpTableTargets = header->jtrgLength >> 2;
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Com_Printf( "Loading %d jump table targets\n", vm->numJumpTableTargets );
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Com_Memset( vm->jumpTableTargets, 0, header->jtrgLength );
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if( alloc ) {
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vm->jumpTableTargets = Hunk_Alloc( header->jtrgLength, h_high );
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} else {
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Com_Memset( vm->jumpTableTargets, 0, header->jtrgLength );
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}
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Com_Memcpy( vm->jumpTableTargets, (byte *)header + header->dataOffset +
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header->dataLength + header->litLength, header->jtrgLength );
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@ -447,6 +444,42 @@ vm_t *VM_Restart( vm_t *vm ) {
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}
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}
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return header;
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}
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/*
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=================
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VM_Restart
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Reload the data, but leave everything else in place
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This allows a server to do a map_restart without changing memory allocation
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=================
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*/
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vm_t *VM_Restart( vm_t *vm ) {
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vmHeader_t *header;
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// DLL's can't be restarted in place
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if ( vm->dllHandle ) {
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char name[MAX_QPATH];
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long (*systemCall)( long *parms );
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systemCall = vm->systemCall;
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Q_strncpyz( name, vm->name, sizeof( name ) );
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VM_Free( vm );
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vm = VM_Create( name, systemCall, VMI_NATIVE );
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return vm;
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}
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// load the image
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Com_Printf( "VM_Restart()\n" );
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if( !( header = VM_LoadQVM( vm, header, qfalse ) ) ) {
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Com_Error( ERR_DROP, "VM_Restart failed.\n" );
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return NULL;
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}
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// free the original file
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FS_FreeFile( header );
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@ -468,10 +501,7 @@ vm_t *VM_Create( const char *module, long (*systemCalls)(long *),
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vmInterpret_t interpret ) {
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vm_t *vm;
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vmHeader_t *header;
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int length;
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int dataLength;
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int i, remaining;
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char filename[MAX_QPATH];
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if ( !module || !module[0] || !systemCalls ) {
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Com_Error( ERR_FATAL, "VM_Create: bad parms" );
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@ -530,76 +560,10 @@ vm_t *VM_Create( const char *module, long (*systemCalls)(long *),
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#endif
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// load the image
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Com_sprintf( filename, sizeof(filename), "vm/%s.qvm", vm->name );
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Com_Printf( "Loading vm file %s...\n", filename );
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length = FS_ReadFile( filename, (void **)&header );
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if ( !header ) {
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Com_Printf( "Failed.\n" );
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VM_Free( vm );
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if( !( header = VM_LoadQVM( vm, header, qtrue ) ) ) {
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return NULL;
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}
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// byte swap the header
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for ( i = 0 ; i < sizeof( *header ) / 4 ; i++ ) {
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((int *)header)[i] = LittleLong( ((int *)header)[i] );
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}
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if( header->vmMagic == VM_MAGIC_VER2 ) {
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Com_Printf( "...which has vmMagic VM_MAGIC_VER2\n" );
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// validate
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if ( header->vmMagic != VM_MAGIC_VER2
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|| header->jtrgLength < 0
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|| header->bssLength < 0
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|| header->dataLength < 0
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|| header->litLength < 0
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|| header->codeLength <= 0 ) {
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VM_Free( vm );
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Com_Error( ERR_FATAL, "%s has bad header", filename );
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}
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} else {
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// validate
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if ( header->vmMagic != VM_MAGIC
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|| header->bssLength < 0
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|| header->dataLength < 0
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|| header->litLength < 0
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|| header->codeLength <= 0 ) {
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VM_Free( vm );
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Com_Error( ERR_FATAL, "%s has bad header", filename );
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}
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}
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// round up to next power of 2 so all data operations can
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// be mask protected
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dataLength = header->dataLength + header->litLength + header->bssLength;
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for ( i = 0 ; dataLength > ( 1 << i ) ; i++ ) {
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}
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dataLength = 1 << i;
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// allocate zero filled space for initialized and uninitialized data
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vm->dataBase = Hunk_Alloc( dataLength, h_high );
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vm->dataMask = dataLength - 1;
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// copy the intialized data
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Com_Memcpy( vm->dataBase, (byte *)header + header->dataOffset, header->dataLength + header->litLength );
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// byte swap the longs
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for ( i = 0 ; i < header->dataLength ; i += 4 ) {
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*(int *)(vm->dataBase + i) = LittleLong( *(int *)(vm->dataBase + i ) );
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}
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if( header->vmMagic == VM_MAGIC_VER2 ) {
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vm->numJumpTableTargets = header->jtrgLength >> 2;
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Com_Printf( "Loading %d jump table targets\n", vm->numJumpTableTargets );
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vm->jumpTableTargets = Hunk_Alloc( header->jtrgLength, h_high );
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Com_Memcpy( vm->jumpTableTargets, (byte *)header + header->dataOffset +
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header->dataLength + header->litLength, header->jtrgLength );
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// byte swap the longs
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for ( i = 0 ; i < header->jtrgLength ; i += 4 ) {
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*(int *)(vm->jumpTableTargets + i) = LittleLong( *(int *)(vm->jumpTableTargets + i ) );
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}
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}
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// allocate space for the jump targets, which will be filled in by the compile/prep functions
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vm->instructionPointersLength = header->instructionCount * 4;
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vm->instructionPointers = Hunk_Alloc( vm->instructionPointersLength, h_high );
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