From f7c82c1adc8ad5982de4c91144a5d3e2bb44bf4a Mon Sep 17 00:00:00 2001 From: Tim Angus Date: Thu, 13 Oct 2005 23:08:45 +0000 Subject: [PATCH] * Fixed some annoying code duplication --- code/qcommon/vm.c | 152 ++++++++++++++++++---------------------------- 1 file changed, 58 insertions(+), 94 deletions(-) diff --git a/code/qcommon/vm.c b/code/qcommon/vm.c index c5f2c751..a319c12f 100644 --- a/code/qcommon/vm.c +++ b/code/qcommon/vm.c @@ -351,40 +351,25 @@ long QDECL VM_DllSyscall( long arg, ... ) { /* ================= -VM_Restart +VM_LoadQVM -Reload the data, but leave everything else in place -This allows a server to do a map_restart without changing memory allocation +Load a .qvm file ================= */ -vm_t *VM_Restart( vm_t *vm ) { - vmHeader_t *header; +vmHeader_t *VM_LoadQVM( vm_t *vm, vmHeader_t *header, qboolean alloc ) { int length; int dataLength; int i; char filename[MAX_QPATH]; - // DLL's can't be restarted in place - if ( vm->dllHandle ) { - char name[MAX_QPATH]; - long (*systemCall)( long *parms ); - - systemCall = vm->systemCall; - Q_strncpyz( name, vm->name, sizeof( name ) ); - - VM_Free( vm ); - - vm = VM_Create( name, systemCall, VMI_NATIVE ); - return vm; - } - // load the image - Com_Printf( "VM_Restart()\n", filename ); Com_sprintf( filename, sizeof(filename), "vm/%s.qvm", vm->name ); Com_Printf( "Loading vm file %s...\n", filename ); length = FS_ReadFile( filename, (void **)&header ); if ( !header ) { - Com_Error( ERR_DROP, "VM_Restart failed.\n" ); + Com_Printf( "Failed.\n" ); + VM_Free( vm ); + return NULL; } // byte swap the header @@ -423,8 +408,14 @@ vm_t *VM_Restart( vm_t *vm ) { } dataLength = 1 << i; - // clear the data - Com_Memset( vm->dataBase, 0, dataLength ); + if( alloc ) { + // allocate zero filled space for initialized and uninitialized data + vm->dataBase = Hunk_Alloc( dataLength, h_high ); + vm->dataMask = dataLength - 1; + } else { + // clear the data + Com_Memset( vm->dataBase, 0, dataLength ); + } // copy the intialized data Com_Memcpy( vm->dataBase, (byte *)header + header->dataOffset, header->dataLength + header->litLength ); @@ -437,7 +428,13 @@ vm_t *VM_Restart( vm_t *vm ) { if( header->vmMagic == VM_MAGIC_VER2 ) { vm->numJumpTableTargets = header->jtrgLength >> 2; Com_Printf( "Loading %d jump table targets\n", vm->numJumpTableTargets ); - Com_Memset( vm->jumpTableTargets, 0, header->jtrgLength ); + + if( alloc ) { + vm->jumpTableTargets = Hunk_Alloc( header->jtrgLength, h_high ); + } else { + Com_Memset( vm->jumpTableTargets, 0, header->jtrgLength ); + } + Com_Memcpy( vm->jumpTableTargets, (byte *)header + header->dataOffset + header->dataLength + header->litLength, header->jtrgLength ); @@ -447,6 +444,42 @@ vm_t *VM_Restart( vm_t *vm ) { } } + return header; +} + +/* +================= +VM_Restart + +Reload the data, but leave everything else in place +This allows a server to do a map_restart without changing memory allocation +================= +*/ +vm_t *VM_Restart( vm_t *vm ) { + vmHeader_t *header; + + // DLL's can't be restarted in place + if ( vm->dllHandle ) { + char name[MAX_QPATH]; + long (*systemCall)( long *parms ); + + systemCall = vm->systemCall; + Q_strncpyz( name, vm->name, sizeof( name ) ); + + VM_Free( vm ); + + vm = VM_Create( name, systemCall, VMI_NATIVE ); + return vm; + } + + // load the image + Com_Printf( "VM_Restart()\n" ); + + if( !( header = VM_LoadQVM( vm, header, qfalse ) ) ) { + Com_Error( ERR_DROP, "VM_Restart failed.\n" ); + return NULL; + } + // free the original file FS_FreeFile( header ); @@ -468,10 +501,7 @@ vm_t *VM_Create( const char *module, long (*systemCalls)(long *), vmInterpret_t interpret ) { vm_t *vm; vmHeader_t *header; - int length; - int dataLength; int i, remaining; - char filename[MAX_QPATH]; if ( !module || !module[0] || !systemCalls ) { Com_Error( ERR_FATAL, "VM_Create: bad parms" ); @@ -530,76 +560,10 @@ vm_t *VM_Create( const char *module, long (*systemCalls)(long *), #endif // load the image - Com_sprintf( filename, sizeof(filename), "vm/%s.qvm", vm->name ); - Com_Printf( "Loading vm file %s...\n", filename ); - length = FS_ReadFile( filename, (void **)&header ); - if ( !header ) { - Com_Printf( "Failed.\n" ); - VM_Free( vm ); + if( !( header = VM_LoadQVM( vm, header, qtrue ) ) ) { return NULL; } - // byte swap the header - 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" ); - // validate - if ( header->vmMagic != VM_MAGIC_VER2 - || header->jtrgLength < 0 - || header->bssLength < 0 - || header->dataLength < 0 - || header->litLength < 0 - || header->codeLength <= 0 ) { - VM_Free( vm ); - Com_Error( ERR_FATAL, "%s has bad header", filename ); - } - } else { - // validate - if ( header->vmMagic != VM_MAGIC - || header->bssLength < 0 - || 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 - // be mask protected - dataLength = header->dataLength + header->litLength + header->bssLength; - for ( i = 0 ; dataLength > ( 1 << i ) ; i++ ) { - } - dataLength = 1 << i; - - // allocate zero filled space for initialized and uninitialized data - vm->dataBase = Hunk_Alloc( dataLength, h_high ); - vm->dataMask = dataLength - 1; - - // copy the intialized data - Com_Memcpy( vm->dataBase, (byte *)header + header->dataOffset, header->dataLength + header->litLength ); - - // byte swap the longs - for ( i = 0 ; i < header->dataLength ; i += 4 ) { - *(int *)(vm->dataBase + i) = LittleLong( *(int *)(vm->dataBase + i ) ); - } - - if( header->vmMagic == VM_MAGIC_VER2 ) { - vm->numJumpTableTargets = header->jtrgLength >> 2; - Com_Printf( "Loading %d jump table targets\n", vm->numJumpTableTargets ); - vm->jumpTableTargets = Hunk_Alloc( header->jtrgLength, h_high ); - Com_Memcpy( vm->jumpTableTargets, (byte *)header + header->dataOffset + - header->dataLength + header->litLength, header->jtrgLength ); - - // byte swap the longs - for ( i = 0 ; i < header->jtrgLength ; i += 4 ) { - *(int *)(vm->jumpTableTargets + i) = LittleLong( *(int *)(vm->jumpTableTargets + i ) ); - } - } - // allocate space for the jump targets, which will be filled in by the compile/prep functions vm->instructionPointersLength = header->instructionCount * 4; vm->instructionPointers = Hunk_Alloc( vm->instructionPointersLength, h_high );