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author | Filippos Karapetis | 2009-08-17 05:55:21 +0000 |
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committer | Filippos Karapetis | 2009-08-17 05:55:21 +0000 |
commit | c38f58598bfc35aa6c1a413e6f1369d5f09ca819 (patch) | |
tree | 08a6f03f0b7a1a364d4180e84ff97b1c0b26000c /engines | |
parent | 0d4fc8169879e0ec476b45fa58601d69e6e0db3c (diff) | |
download | scummvm-rg350-c38f58598bfc35aa6c1a413e6f1369d5f09ca819.tar.gz scummvm-rg350-c38f58598bfc35aa6c1a413e6f1369d5f09ca819.tar.bz2 scummvm-rg350-c38f58598bfc35aa6c1a413e6f1369d5f09ca819.zip |
- Simplified some functions to accept only the parts of the EngineState they need as parameters, instead of the whole EngineState
- Moved the class table in the Segment manager - it's the only class using it directly
- Removed the sci11 flag from save games (we already know this, we don't need to store it)
- Moved script_get_segment() and get_class_address() inside the segment manager class
- Removed the script_locate_by_segment wrapper
- Simplified script_lookup_export() a lot by removing some paranoia checks
- Added some WIP code for automatically determining the game id in the fallback detector (still not working)
- General cleanup
svn-id: r43458
Diffstat (limited to 'engines')
-rw-r--r-- | engines/sci/console.cpp | 38 | ||||
-rw-r--r-- | engines/sci/detection.cpp | 14 | ||||
-rw-r--r-- | engines/sci/engine/game.cpp | 58 | ||||
-rw-r--r-- | engines/sci/engine/kernel.cpp | 2 | ||||
-rw-r--r-- | engines/sci/engine/kmovement.cpp | 2 | ||||
-rw-r--r-- | engines/sci/engine/kscripts.cpp | 16 | ||||
-rw-r--r-- | engines/sci/engine/memobj.cpp | 1 | ||||
-rw-r--r-- | engines/sci/engine/savegame.cpp | 30 | ||||
-rw-r--r-- | engines/sci/engine/scriptdebug.cpp | 7 | ||||
-rw-r--r-- | engines/sci/engine/seg_manager.cpp | 98 | ||||
-rw-r--r-- | engines/sci/engine/seg_manager.h | 41 | ||||
-rw-r--r-- | engines/sci/engine/state.h | 2 | ||||
-rw-r--r-- | engines/sci/engine/vm.cpp | 222 | ||||
-rw-r--r-- | engines/sci/engine/vm.h | 60 |
14 files changed, 293 insertions, 298 deletions
diff --git a/engines/sci/console.cpp b/engines/sci/console.cpp index 35ca688233..7b329864ce 100644 --- a/engines/sci/console.cpp +++ b/engines/sci/console.cpp @@ -889,10 +889,11 @@ bool Console::cmdRestartGame(int argc, const char **argv) { bool Console::cmdClassTable(int argc, const char **argv) { DebugPrintf("Available classes:\n"); - for (uint i = 0; i < _vm->_gamestate->_classtable.size(); i++) { - if (_vm->_gamestate->_classtable[i].reg.segment) { + for (uint i = 0; i < _vm->_gamestate->seg_manager->_classtable.size(); i++) { + if (_vm->_gamestate->seg_manager->_classtable[i].reg.segment) { DebugPrintf(" Class 0x%x at %04x:%04x (script 0x%x)\n", i, - PRINT_REG(_vm->_gamestate->_classtable[i].reg), _vm->_gamestate->_classtable[i].script); + PRINT_REG(_vm->_gamestate->seg_manager->_classtable[i].reg), + _vm->_gamestate->seg_manager->_classtable[i].script); } } @@ -1394,10 +1395,11 @@ bool Console::segmentInfo(int nr) { for (uint i = 0; i < scr->_objects.size(); i++) { DebugPrintf(" "); // Object header - Object *obj = obj_get(_vm->_gamestate, scr->_objects[i].pos); + Object *obj = obj_get(_vm->_gamestate->seg_manager, _vm->_gamestate->_version, scr->_objects[i].pos); if (obj) DebugPrintf("[%04x:%04x] %s : %3d vars, %3d methods\n", PRINT_REG(scr->_objects[i].pos), - obj_get_name(_vm->_gamestate, scr->_objects[i].pos), obj->_variables.size(), obj->methods_nr); + obj_get_name(_vm->_gamestate->seg_manager, _vm->_gamestate->_version, + scr->_objects[i].pos), obj->_variables.size(), obj->methods_nr); } } break; @@ -1438,12 +1440,13 @@ bool Console::segmentInfo(int nr) { reg_t objpos; objpos.offset = i; objpos.segment = nr; - DebugPrintf(" [%04x] %s; copy of ", i, obj_get_name(_vm->_gamestate, objpos)); + DebugPrintf(" [%04x] %s; copy of ", i, obj_get_name(_vm->_gamestate->seg_manager, _vm->_gamestate->_version, objpos)); // Object header - Object *obj = obj_get(_vm->_gamestate, ct->_table[i].pos); + Object *obj = obj_get(_vm->_gamestate->seg_manager, _vm->_gamestate->_version, ct->_table[i].pos); if (obj) DebugPrintf("[%04x:%04x] %s : %3d vars, %3d methods\n", PRINT_REG(ct->_table[i].pos), - obj_get_name(_vm->_gamestate, ct->_table[i].pos), obj->_variables.size(), obj->methods_nr); + obj_get_name(_vm->_gamestate->seg_manager, _vm->_gamestate->_version, ct->_table[i].pos), + obj->_variables.size(), obj->methods_nr); } } break; @@ -2045,7 +2048,7 @@ bool Console::cmdBacktrace(int argc, const char **argv) { for (iter = _vm->_gamestate->_executionStack.begin(); iter != _vm->_gamestate->_executionStack.end(); ++iter, ++i) { ExecStack &call = *iter; - const char *objname = obj_get_name(_vm->_gamestate, call.sendp); + const char *objname = obj_get_name(_vm->_gamestate->seg_manager, _vm->_gamestate->_version, call.sendp); int paramc, totalparamc; switch (call.type) { @@ -2187,7 +2190,7 @@ bool Console::cmdDissassemble(int argc, const char **argv) { return true; } - Object *obj = obj_get(_vm->_gamestate, objAddr); + Object *obj = obj_get(_vm->_gamestate->seg_manager, _vm->_gamestate->_version, objAddr); int selector_id = _vm->getKernel()->findSelector(argv[2]); reg_t addr; @@ -2295,7 +2298,7 @@ bool Console::cmdSend(int argc, const char **argv) { return true; } - o = obj_get(_vm->_gamestate, object); + o = obj_get(_vm->_gamestate->seg_manager, _vm->_gamestate->_version, object); if (o == NULL) { DebugPrintf("Address \"%04x:%04x\" is not an object\n", PRINT_REG(object)); return true; @@ -2900,7 +2903,7 @@ int parse_reg_t(EngineState *s, const char *str, reg_t *dest) { // Returns 0 on } if (valid) { - const char *objname = obj_get_name(s, objpos); + const char *objname = obj_get_name(s->seg_manager, s->_version, objpos); if (!strcmp(objname, str_objname)) { // Found a match! if ((index < 0) && (times_found > 0)) { @@ -3042,9 +3045,10 @@ int Console::printNode(reg_t addr) { int Console::printObject(reg_t pos) { EngineState *s = _vm->_gamestate; // for the several defines in this function - Object *obj = obj_get(s, pos); + Object *obj = obj_get(s->seg_manager, s->_version, pos); Object *var_container = obj; int i; + SciVersion version = s->_version; // for the selector defines if (!obj) { DebugPrintf("[%04x:%04x]: Not an object.", PRINT_REG(pos)); @@ -3052,11 +3056,11 @@ int Console::printObject(reg_t pos) { } // Object header - DebugPrintf("[%04x:%04x] %s : %3d vars, %3d methods\n", PRINT_REG(pos), obj_get_name(s, pos), + DebugPrintf("[%04x:%04x] %s : %3d vars, %3d methods\n", PRINT_REG(pos), obj_get_name(s->seg_manager, s->_version, pos), obj->_variables.size(), obj->methods_nr); if (!(obj->_variables[SCRIPT_INFO_SELECTOR].offset & SCRIPT_INFO_CLASS)) - var_container = obj_get(s, obj->_variables[SCRIPT_SUPERCLASS_SELECTOR]); + var_container = obj_get(s->seg_manager, s->_version, obj->_variables[SCRIPT_SUPERCLASS_SELECTOR]); DebugPrintf(" -- member variables:\n"); for (i = 0; (uint)i < obj->_variables.size(); i++) { printf(" "); @@ -3068,9 +3072,9 @@ int Console::printObject(reg_t pos) { reg_t val = obj->_variables[i]; DebugPrintf("%04x:%04x", PRINT_REG(val)); - Object *ref = obj_get(s, val); + Object *ref = obj_get(s->seg_manager, s->_version, val); if (ref) - DebugPrintf(" (%s)", obj_get_name(s, val)); + DebugPrintf(" (%s)", obj_get_name(s->seg_manager, s->_version, val)); DebugPrintf("\n"); } diff --git a/engines/sci/detection.cpp b/engines/sci/detection.cpp index 3df5bdb63a..88bd0d63c3 100644 --- a/engines/sci/detection.cpp +++ b/engines/sci/detection.cpp @@ -28,6 +28,7 @@ #include "sci/sci.h" #include "sci/exereader.h" +#include "sci/engine/seg_manager.h" namespace Sci { @@ -3086,6 +3087,19 @@ const ADGameDescription *SciMetaEngine::fallbackDetect(const Common::FSList &fsl s_fallbackDesc.desc.platform = exePlatform; s_fallbackDesc.desc.flags = ADGF_NO_FLAGS; +#if 0 + // Determine the game id + // TODO + ResourceManager *resMgr = new ResourceManager(256 * 1024); + SciVersion version = resMgr->sciVersion(); + SegManager *segManager = new SegManager(resMgr, version); + reg_t game_obj = script_lookup_export(segManager, 0, 0); + Common::String gameName = obj_get_name(segManager,version, game_obj); + debug(2, " \"%s\" at %04x:%04x", gameName.c_str(), PRINT_REG(game_obj)); + delete segManager; + delete resMgr; +#endif + printf("If this is *NOT* a fan-modified version (in particular, not a fan-made\n"); printf("translation), please, report the data above, including the following\n"); printf("version number, from the game's executable:\n"); diff --git a/engines/sci/engine/game.cpp b/engines/sci/engine/game.cpp index 1fa0e03d4c..6872039c89 100644 --- a/engines/sci/engine/game.cpp +++ b/engines/sci/engine/game.cpp @@ -197,9 +197,9 @@ int create_class_table_sci11(EngineState *s) { Resource *vocab996 = s->resmgr->findResource(ResourceId(kResourceTypeVocab, 996), 1); if (!vocab996) - s->_classtable.resize(20); + s->seg_manager->_classtable.resize(20); else - s->_classtable.resize(vocab996->size >> 2); + s->seg_manager->_classtable.resize(vocab996->size >> 2); for (scriptnr = 0; scriptnr < 1000; scriptnr++) { Resource *heap = s->resmgr->findResource(ResourceId(kResourceTypeHeap, scriptnr), 0); @@ -213,19 +213,19 @@ int create_class_table_sci11(EngineState *s) { while (READ_LE_UINT16((byte*)seeker_ptr) == SCRIPT_OBJECT_MAGIC_NUMBER) { if (READ_LE_UINT16((byte*)seeker_ptr + 14) & SCRIPT_INFO_CLASS) { classnr = READ_LE_UINT16((byte*)seeker_ptr + 10); - if (classnr >= (int)s->_classtable.size()) { + if (classnr >= (int)s->seg_manager->_classtable.size()) { if (classnr >= SCRIPT_MAX_CLASSTABLE_SIZE) { warning("Invalid class number 0x%x in script.%d(0x%x), offset %04x", classnr, scriptnr, scriptnr, seeker_offset); return 1; } - s->_classtable.resize(classnr + 1); // Adjust maximum number of entries + s->seg_manager->_classtable.resize(classnr + 1); // Adjust maximum number of entries } - s->_classtable[classnr].reg.offset = seeker_offset; - s->_classtable[classnr].reg.segment = 0; - s->_classtable[classnr].script = scriptnr; + s->seg_manager->_classtable[classnr].reg.offset = seeker_offset; + s->seg_manager->_classtable[classnr].reg.segment = 0; + s->seg_manager->_classtable[classnr].script = scriptnr; } seeker_ptr += READ_LE_UINT16((byte*)seeker_ptr + 2) * 2; @@ -246,11 +246,12 @@ static int create_class_table_sci0(EngineState *s) { int magic_offset; // For strange scripts in older SCI versions Resource *vocab996 = s->resmgr->findResource(ResourceId(kResourceTypeVocab, 996), 1); + SciVersion version = s->_version; // for the offset defines if (!vocab996) - s->_classtable.resize(20); + s->seg_manager->_classtable.resize(20); else - s->_classtable.resize(vocab996->size >> 2); + s->seg_manager->_classtable.resize(vocab996->size >> 2); for (scriptnr = 0; scriptnr < 1000; scriptnr++) { int objtype = 0; @@ -270,7 +271,7 @@ static int create_class_table_sci0(EngineState *s) { break; seeker += (int16)READ_LE_UINT16(script->data + seeker + 2); if (seeker <= lastseeker) { - s->_classtable.clear(); + s->seg_manager->_classtable.clear(); error("Script version is invalid"); } } @@ -281,7 +282,7 @@ static int create_class_table_sci0(EngineState *s) { seeker -= SCRIPT_OBJECT_MAGIC_OFFSET; // Adjust position; script home is base +8 bytes classnr = (int16)READ_LE_UINT16(script->data + seeker + 4 + SCRIPT_SPECIES_OFFSET); - if (classnr >= (int)s->_classtable.size()) { + if (classnr >= (int)s->seg_manager->_classtable.size()) { if (classnr >= SCRIPT_MAX_CLASSTABLE_SIZE) { warning("Invalid class number 0x%x in script.%d(0x%x), offset %04x", @@ -289,7 +290,7 @@ static int create_class_table_sci0(EngineState *s) { return 1; } - s->_classtable.resize(classnr + 1); // Adjust maximum number of entries + s->seg_manager->_classtable.resize(classnr + 1); // Adjust maximum number of entries } // Map the class ID to the script the corresponding class is contained in @@ -303,9 +304,9 @@ static int create_class_table_sci0(EngineState *s) { if (sugg_script == -1 || scriptnr == sugg_script /*|| !s->_classtable[classnr].reg.segment*/) { // Now set the home script of the class - s->_classtable[classnr].reg.offset = seeker + 4 - magic_offset; - s->_classtable[classnr].reg.segment = 0; - s->_classtable[classnr].script = scriptnr; + s->seg_manager->_classtable[classnr].reg.offset = seeker + 4 - magic_offset; + s->seg_manager->_classtable[classnr].reg.segment = 0; + s->seg_manager->_classtable[classnr].script = scriptnr; } seeker += SCRIPT_OBJECT_MAGIC_OFFSET; // Re-adjust position @@ -326,6 +327,7 @@ int script_init_engine(EngineState *s) { int result; s->kernel_opt_flags = 0; + s->seg_manager = new SegManager(s->resmgr, s->_version); if (s->_version >= SCI_VERSION_1_1) result = create_class_table_sci11(s); @@ -337,10 +339,9 @@ int script_init_engine(EngineState *s) { return 1; } - s->seg_manager = new SegManager(s->_version >= SCI_VERSION_1_1); s->gc_countdown = GC_INTERVAL - 1; - SegmentId script_000_segment = script_get_segment(s, 0, SCRIPT_GET_LOCK); + SegmentId script_000_segment = s->seg_manager->getSegment(0, SCRIPT_GET_LOCK); if (script_000_segment <= 0) { debug(2, "Failed to instantiate script.000"); @@ -398,7 +399,8 @@ void internal_stringfrag_strncpy(EngineState *s, reg_t *dest, reg_t *src, int le void script_free_vm_memory(EngineState *s) { debug(2, "Freeing VM memory"); - s->_classtable.clear(); + if (s->seg_manager) + s->seg_manager->_classtable.clear(); // Close all opened file handles s->_fileHandles.clear(); @@ -433,14 +435,13 @@ void script_free_breakpoints(EngineState *s) { int game_init(EngineState *s) { // FIXME Use new VM instantiation code all over the place" - reg_t game_obj; // Address of the game object DataStack *stack; stack = s->seg_manager->allocateStack(VM_STACK_SIZE, &s->stack_segment); s->stack_base = stack->entries; s->stack_top = s->stack_base + VM_STACK_SIZE; - if (!script_instantiate(s, 0)) { + if (!script_instantiate(s->resmgr, s->seg_manager, s->_version, 0)) { warning("game_init(): Could not instantiate script 0"); return 1; } @@ -473,20 +474,11 @@ int game_init(EngineState *s) { srand(g_system->getMillis()); // Initialize random number generator // script_dissect(0, s->_selectorNames); - game_obj = script_lookup_export(s, 0, 0); // The first entry in the export table of script 0 points to the game object + s->game_obj = script_lookup_export(s->seg_manager, 0, 0); + s->_gameName = obj_get_name(s->seg_manager, s->_version, s->game_obj); - const char *tmp = obj_get_name(s, game_obj); - - if (!tmp) { - warning("Error: script.000, export 0 (%04x:%04x) does not yield an object with a name -> sanity check failed", PRINT_REG(game_obj)); - return 1; - } - s->_gameName = tmp; - - debug(2, " \"%s\" at %04x:%04x", s->_gameName.c_str(), PRINT_REG(game_obj)); - - s->game_obj = game_obj; + debug(2, " \"%s\" at %04x:%04x", s->_gameName.c_str(), PRINT_REG(s->game_obj)); // Mark parse tree as unused s->parser_nodes[0].type = kParseTreeLeafNode; @@ -512,7 +504,9 @@ int game_exit(EngineState *s) { game_init_sound(s, SFX_STATE_FLAG_NOSOUND); } + s->seg_manager->_classtable.clear(); delete s->seg_manager; + s->seg_manager = 0; s->_synonyms.clear(); diff --git a/engines/sci/engine/kernel.cpp b/engines/sci/engine/kernel.cpp index 193ff4cc51..6d027d5788 100644 --- a/engines/sci/engine/kernel.cpp +++ b/engines/sci/engine/kernel.cpp @@ -706,6 +706,8 @@ int determine_reg_type(EngineState *s, reg_t reg, bool allow_invalid) { mobj = s->seg_manager->_heap[reg.segment]; + SciVersion version = s->_version; // for the offset defines + switch (mobj->getType()) { case MEM_OBJ_SCRIPT: if (reg.offset <= (*(Script *)mobj).buf_size && reg.offset >= -SCRIPT_OBJECT_MAGIC_OFFSET diff --git a/engines/sci/engine/kmovement.cpp b/engines/sci/engine/kmovement.cpp index 7433324a70..58dc3b73f1 100644 --- a/engines/sci/engine/kmovement.cpp +++ b/engines/sci/engine/kmovement.cpp @@ -257,7 +257,7 @@ static void bresenham_autodetect(EngineState *s) { reg_t motion_class; if (!parse_reg_t(s, "?Motion", &motion_class)) { - Object *obj = obj_get(s, motion_class); + Object *obj = obj_get(s->seg_manager, s->_version, motion_class); reg_t fptr; byte *buf; diff --git a/engines/sci/engine/kscripts.cpp b/engines/sci/engine/kscripts.cpp index df25e11729..4d90dd68ac 100644 --- a/engines/sci/engine/kscripts.cpp +++ b/engines/sci/engine/kscripts.cpp @@ -108,7 +108,7 @@ int invoke_selector(EngineState *s, reg_t object, int selector_id, SelectorInvoc } bool is_object(EngineState *s, reg_t object) { - return obj_get(s, object) != NULL; + return obj_get(s->seg_manager, s->_version, object) != NULL; } // Loads arbitrary resources of type 'restype' with resource numbers 'resnrs' @@ -184,7 +184,7 @@ reg_t kResCheck(EngineState *s, int funct_nr, int argc, reg_t *argv) { reg_t kClone(EngineState *s, int funct_nr, int argc, reg_t *argv) { reg_t parent_addr = argv[0]; - Object *parent_obj = obj_get(s, parent_addr); + Object *parent_obj = obj_get(s->seg_manager, s->_version, parent_addr); reg_t clone_addr; Clone *clone_obj; // same as Object* @@ -205,6 +205,8 @@ reg_t kClone(EngineState *s, int funct_nr, int argc, reg_t *argv) { *clone_obj = *parent_obj; clone_obj->flags = 0; + SciVersion version = s->_version; // for the selector defines + // Mark as clone clone_obj->_variables[SCRIPT_INFO_SELECTOR].offset = SCRIPT_INFO_CLONE; clone_obj->_variables[SCRIPT_SPECIES_SELECTOR] = clone_obj->pos; @@ -220,7 +222,7 @@ extern void _k_view_list_mark_free(EngineState *s, reg_t off); reg_t kDisposeClone(EngineState *s, int funct_nr, int argc, reg_t *argv) { reg_t victim_addr = argv[0]; - Clone *victim_obj = obj_get(s, victim_addr); + Clone *victim_obj = obj_get(s->seg_manager, s->_version, victim_addr); uint16 underBits; if (!victim_obj) { @@ -229,6 +231,8 @@ reg_t kDisposeClone(EngineState *s, int funct_nr, int argc, reg_t *argv) { return s->r_acc; } + SciVersion version = s->_version; // for the selector defines + if (victim_obj->_variables[SCRIPT_INFO_SELECTOR].offset != SCRIPT_INFO_CLONE) { //warning("Attempt to dispose something other than a clone at %04x", offset); // SCI silently ignores this behaviour; some games actually depend on it @@ -260,7 +264,7 @@ reg_t kScriptID(EngineState *s, int funct_nr, int argc, reg_t *argv) { int script = argv[0].toUint16(); int index = (argc > 1) ? argv[1].toUint16() : 0; - SegmentId scriptid = script_get_segment(s, script, SCRIPT_GET_LOAD); + SegmentId scriptid = s->seg_manager->getSegment(script, SCRIPT_GET_LOAD); Script *scr; if (argv[0].segment) @@ -299,13 +303,13 @@ reg_t kDisposeScript(EngineState *s, int funct_nr, int argc, reg_t *argv) { scr->setLockers(1); } - script_uninstantiate(s, script); + script_uninstantiate(s->seg_manager, s->_version, script); s->_executionStackPosChanged = true; return s->r_acc; } int is_heap_object(EngineState *s, reg_t pos) { - Object *obj = obj_get(s, pos); + Object *obj = obj_get(s->seg_manager, s->_version, pos); return (obj != NULL && (!(obj->flags & OBJECT_FLAG_FREED)) && (!s->seg_manager->scriptIsMarkedAsDeleted(pos.segment))); } diff --git a/engines/sci/engine/memobj.cpp b/engines/sci/engine/memobj.cpp index ab8e14efc7..34432521a0 100644 --- a/engines/sci/engine/memobj.cpp +++ b/engines/sci/engine/memobj.cpp @@ -246,6 +246,7 @@ void Script::listAllDeallocatable(SegmentId segId, void *param, NoteCallback not void Script::listAllOutgoingReferences(EngineState *s, reg_t addr, void *param, NoteCallback note) { Script *script = this; + SciVersion version = s->_version; // for the offset defines if (addr.offset <= script->buf_size && addr.offset >= -SCRIPT_OBJECT_MAGIC_OFFSET && RAW_IS_OBJECT(script->buf + addr.offset)) { int idx = RAW_GET_CLASS_INDEX(script, addr); diff --git a/engines/sci/engine/savegame.cpp b/engines/sci/engine/savegame.cpp index 75cd4aee54..1768695244 100644 --- a/engines/sci/engine/savegame.cpp +++ b/engines/sci/engine/savegame.cpp @@ -205,19 +205,21 @@ void SegManager::saveLoadWithSerializer(Common::Serializer &s) { } static void sync_SegManagerPtr(Common::Serializer &s, SegManager *&obj) { - bool sci11 = false; + SciVersion version = SCI_VERSION_AUTODETECT; + ResourceManager *resMgr = 0; if (s.isSaving()) { assert(obj); - sci11 = obj->isSci1_1; + version = obj->_version; + resMgr = obj->_resMgr; } - s.syncAsByte(sci11); + s.skip(1); // obsolete: used to be a flag indicating if we got sci11 or not if (s.isLoading()) { // FIXME: Do in-place loading at some point, instead of creating a new EngineState instance from scratch. delete obj; - obj = new SegManager(sci11); + obj = new SegManager(resMgr, version); } obj->saveLoadWithSerializer(s); @@ -266,7 +268,7 @@ void EngineState::saveLoadWithSerializer(Common::Serializer &s) { sync_SegManagerPtr(s, seg_manager); - syncArray<Class>(s, _classtable); + syncArray<Class>(s, seg_manager->_classtable); sync_sfx_state_t(s, _sound); } @@ -549,7 +551,7 @@ static void load_script(EngineState *s, SegmentId seg) { heap = s->resmgr->findResource(ResourceId(kResourceTypeHeap, scr->nr), 0); memcpy(scr->buf, script->data, script->size); - if (s->seg_manager->isSci1_1) + if (s->seg_manager->_version == SCI_VERSION_1_1) memcpy(scr->buf + scr->script_size, heap->data, heap->size); } @@ -557,6 +559,8 @@ static void load_script(EngineState *s, SegmentId seg) { static void reconstruct_scripts(EngineState *s, SegManager *self) { uint i, j; MemObject *mobj; + SciVersion version = s->_version; // for the selector defines + for (i = 0; i < self->_heap.size(); i++) { if (self->_heap[i]) { mobj = self->_heap[i]; @@ -567,7 +571,7 @@ static void reconstruct_scripts(EngineState *s, SegManager *self) { // FIXME: Unify this code with script_instantiate_* load_script(s, i); scr->locals_block = (scr->locals_segment == 0) ? NULL : (LocalVariables *)(s->seg_manager->_heap[scr->locals_segment]); - if (s->seg_manager->isSci1_1) { + if (s->seg_manager->_version == SCI_VERSION_1_1) { scr->export_table = 0; scr->synonyms = 0; if (READ_LE_UINT16(scr->buf + 6) > 0) { @@ -603,7 +607,7 @@ static void reconstruct_scripts(EngineState *s, SegManager *self) { for (j = 0; j < scr->_objects.size(); j++) { byte *data = scr->buf + scr->_objects[j].pos.offset; - if (self->isSci1_1) { + if (self->_version == SCI_VERSION_1_1) { uint16 *funct_area = (uint16 *) (scr->buf + READ_LE_UINT16( data + 6 )); uint16 *prop_area = (uint16 *) (scr->buf + READ_LE_UINT16( data + 4 )); @@ -613,7 +617,7 @@ static void reconstruct_scripts(EngineState *s, SegManager *self) { int funct_area = READ_LE_UINT16( data + SCRIPT_FUNCTAREAPTR_OFFSET ); Object *base_obj; - base_obj = obj_get(s, scr->_objects[j]._variables[SCRIPT_SPECIES_SELECTOR]); + base_obj = obj_get(s->seg_manager, s->_version, scr->_objects[j]._variables[SCRIPT_SPECIES_SELECTOR]); if (!base_obj) { warning("Object without a base class: Script %d, index %d (reg address %04x:%04x", @@ -638,6 +642,8 @@ static void reconstruct_scripts(EngineState *s, SegManager *self) { // FIXME: The following should likely become a SegManager method static void reconstruct_clones(EngineState *s, SegManager *self) { + SciVersion version = s->_version; // for the selector defines + for (uint i = 0; i < self->_heap.size(); i++) { if (self->_heap[i]) { MemObject *mobj = self->_heap[i]; @@ -667,7 +673,7 @@ static void reconstruct_clones(EngineState *s, SegManager *self) { continue; } CloneTable::Entry &seeker = ct->_table[j]; - base_obj = obj_get(s, seeker._variables[SCRIPT_SPECIES_SELECTOR]); + base_obj = obj_get(s->seg_manager, s->_version, seeker._variables[SCRIPT_SPECIES_SELECTOR]); if (!base_obj) { printf("Clone entry without a base class: %d\n", j); seeker.base = seeker.base_obj = NULL; @@ -791,7 +797,7 @@ EngineState *gamestate_restore(EngineState *s, Common::SeekableReadStream *fh) { reconstruct_scripts(retval, retval->seg_manager); reconstruct_clones(retval, retval->seg_manager); retval->game_obj = s->game_obj; - retval->script_000 = retval->seg_manager->getScript(script_get_segment(s, 0, SCRIPT_GET_DONT_LOAD)); + retval->script_000 = retval->seg_manager->getScript(retval->seg_manager->getSegment(0, SCRIPT_GET_DONT_LOAD)); retval->gc_countdown = GC_INTERVAL - 1; retval->sys_strings_segment = find_unique_seg_by_type(retval->seg_manager, MEM_OBJ_SYS_STRINGS); retval->sys_strings = (SystemStrings *)GET_SEGMENT(*retval->seg_manager, retval->sys_strings_segment, MEM_OBJ_SYS_STRINGS); @@ -831,7 +837,7 @@ EngineState *gamestate_restore(EngineState *s, Common::SeekableReadStream *fh) { retval->successor = NULL; retval->pic_priority_table = (int *)gfxop_get_pic_metainfo(retval->gfx_state); - retval->_gameName = obj_get_name(retval, retval->game_obj); + retval->_gameName = obj_get_name(retval->seg_manager, retval->_version, retval->game_obj); retval->_sound._it = NULL; retval->_sound._flags = s->_sound._flags; diff --git a/engines/sci/engine/scriptdebug.cpp b/engines/sci/engine/scriptdebug.cpp index 0341ecb73d..fd7219bc85 100644 --- a/engines/sci/engine/scriptdebug.cpp +++ b/engines/sci/engine/scriptdebug.cpp @@ -37,9 +37,10 @@ extern const char *selector_name(EngineState *s, int selector); ScriptState scriptState; int propertyOffsetToId(EngineState *s, int prop_ofs, reg_t objp) { - Object *obj = obj_get(s, objp); + Object *obj = obj_get(s->seg_manager, s->_version, objp); byte *selectoroffset; int selectors; + SciVersion version = s->_version; // for the selector defines if (!obj) { warning("Applied propertyOffsetToId on non-object at %04x:%04x", PRINT_REG(objp)); @@ -52,7 +53,7 @@ int propertyOffsetToId(EngineState *s, int prop_ofs, reg_t objp) { selectoroffset = ((byte *)(obj->base_obj)) + SCRIPT_SELECTOR_OFFSET + selectors * 2; else { if (!(obj->_variables[SCRIPT_INFO_SELECTOR].offset & SCRIPT_INFO_CLASS)) { - obj = obj_get(s, obj->_variables[SCRIPT_SUPERCLASS_SELECTOR]); + obj = obj_get(s->seg_manager, s->_version, obj->_variables[SCRIPT_SUPERCLASS_SELECTOR]); selectoroffset = (byte *)obj->base_vars; } else selectoroffset = (byte *)obj->base_vars; @@ -268,7 +269,7 @@ reg_t disassemble(EngineState *s, reg_t pos, int print_bw_tag, int print_bytecod selector = sb[- stackframe].offset; - name = obj_get_name(s, called_obj_addr); + name = obj_get_name(s->seg_manager, s->_version, called_obj_addr); if (!name) name = "<invalid>"; diff --git a/engines/sci/engine/seg_manager.cpp b/engines/sci/engine/seg_manager.cpp index 905cba9d94..f47a874528 100644 --- a/engines/sci/engine/seg_manager.cpp +++ b/engines/sci/engine/seg_manager.cpp @@ -52,7 +52,7 @@ namespace Sci { #define INVALID_SCRIPT_ID -1 -SegManager::SegManager(bool sci1_1) { +SegManager::SegManager(ResourceManager *resMgr, SciVersion version) { id_seg_map = new IntMapper(); reserved_id = INVALID_SCRIPT_ID; id_seg_map->checkKey(reserved_id, true); // reserve entry 0 for INVALID_SCRIPT_ID @@ -66,7 +66,8 @@ SegManager::SegManager(bool sci1_1) { Hunks_seg_id = 0; exports_wide = 0; - isSci1_1 = sci1_1; + _version = version; + _resMgr = resMgr; } // Destroy the object, free the memorys if allocated before @@ -109,7 +110,7 @@ MemObject *SegManager::allocNonscriptSegment(MemObjectType type, SegmentId *segi // Returns : 0 - allocation failure // 1 - allocated successfully // seg_id - allocated segment id -Script *SegManager::allocateScript(EngineState *s, int script_nr, SegmentId *seg_id) { +Script *SegManager::allocateScript(int script_nr, SegmentId *seg_id) { bool was_added; MemObject *mem; @@ -128,20 +129,20 @@ Script *SegManager::allocateScript(EngineState *s, int script_nr, SegmentId *seg return (Script *)mem; } -void SegManager::setScriptSize(Script &scr, EngineState *s, int script_nr) { - Resource *script = s->resmgr->findResource(ResourceId(kResourceTypeScript, script_nr), 0); - Resource *heap = s->resmgr->findResource(ResourceId(kResourceTypeHeap, script_nr), 0); +void SegManager::setScriptSize(Script &scr, int script_nr) { + Resource *script = _resMgr->findResource(ResourceId(kResourceTypeScript, script_nr), 0); + Resource *heap = _resMgr->findResource(ResourceId(kResourceTypeHeap, script_nr), 0); scr.script_size = script->size; scr.heap_size = 0; // Set later - if (!script || (s->_version >= SCI_VERSION_1_1 && !heap)) { + if (!script || (_version >= SCI_VERSION_1_1 && !heap)) { error("SegManager::setScriptSize: failed to load %s", !script ? "script" : "heap"); } if (((SciEngine*)g_engine)->getKernel()->hasOldScriptHeader()) { scr.buf_size = script->size + READ_LE_UINT16(script->data) * 2; //locals_size = READ_LE_UINT16(script->data) * 2; - } else if (s->_version < SCI_VERSION_1_1) { + } else if (_version < SCI_VERSION_1_1) { scr.buf_size = script->size; } else { scr.buf_size = script->size + heap->size; @@ -163,10 +164,10 @@ void SegManager::setScriptSize(Script &scr, EngineState *s, int script_nr) { } } -int SegManager::initialiseScript(Script &scr, EngineState *s, int script_nr) { +int SegManager::initialiseScript(Script &scr, int script_nr) { // allocate the script.buf - setScriptSize(scr, s, script_nr); + setScriptSize(scr, script_nr); scr.buf = (byte *)malloc(scr.buf_size); #ifdef DEBUG_SEG_MANAGER @@ -191,7 +192,7 @@ int SegManager::initialiseScript(Script &scr, EngineState *s, int script_nr) { scr.obj_indices = new IntMapper(); - if (s->_version >= SCI_VERSION_1_1) + if (_version >= SCI_VERSION_1_1) scr.heap_start = scr.buf + scr.script_size; else scr.heap_start = scr.buf; @@ -319,7 +320,7 @@ int SegManager::relocateBlock(Common::Array<reg_t> &block, int block_location, S return 0; } block[idx].segment = segment; // Perform relocation - if (isSci1_1) + if (_version == SCI_VERSION_1_1) block[idx].offset += getScript(segment)->script_size; return 1; @@ -429,13 +430,51 @@ void SegManager::heapRelocate(reg_t block) { } } -#define INST_LOOKUP_CLASS(id) ((id == 0xffff) ? NULL_REG : get_class_address(s, id, SCRIPT_GET_LOCK, NULL_REG)) +SegmentId SegManager::getSegment(int script_nr, SCRIPT_GET load) { + SegmentId segment; -reg_t get_class_address(EngineState *s, int classnr, SCRIPT_GET lock, reg_t caller); + if ((load & SCRIPT_GET_LOAD) == SCRIPT_GET_LOAD) + script_instantiate(_resMgr, this, _version, script_nr); -Object *SegManager::scriptObjInit0(EngineState *s, reg_t obj_pos) { + segment = segGet(script_nr); + + if (segment > 0) { + if ((load & SCRIPT_GET_LOCK) == SCRIPT_GET_LOCK) + getScript(segment)->incrementLockers(); + + return segment; + } else + return 0; +} + +#define INST_LOOKUP_CLASS(id) ((id == 0xffff) ? NULL_REG : get_class_address(id, SCRIPT_GET_LOCK, NULL_REG)) + +reg_t SegManager::get_class_address(int classnr, SCRIPT_GET lock, reg_t caller) { + if (classnr < 0 || (int)_classtable.size() <= classnr || _classtable[classnr].script < 0) { + error("[VM] Attempt to dereference class %x, which doesn't exist (max %x)", classnr, _classtable.size()); + return NULL_REG; + } else { + Class *the_class = &_classtable[classnr]; + if (!the_class->reg.segment) { + getSegment(the_class->script, lock); + + if (!the_class->reg.segment) { + error("[VM] Trying to instantiate class %x by instantiating script 0x%x (%03d) failed;" + " Entering debugger.", classnr, the_class->script, the_class->script); + return NULL_REG; + } + } else + if (caller.segment != the_class->reg.segment) + getScript(the_class->reg.segment)->incrementLockers(); + + return the_class->reg; + } +} + +Object *SegManager::scriptObjInit0(reg_t obj_pos) { Object *obj; int id; + SciVersion version = _version; // for the offset defines unsigned int base = obj_pos.offset - SCRIPT_OBJECT_MAGIC_OFFSET; reg_t temp; @@ -489,7 +528,7 @@ Object *SegManager::scriptObjInit0(EngineState *s, reg_t obj_pos) { return obj; } -Object *SegManager::scriptObjInit11(EngineState *s, reg_t obj_pos) { +Object *SegManager::scriptObjInit11(reg_t obj_pos) { Object *obj; int id; int base = obj_pos.offset; @@ -543,11 +582,11 @@ Object *SegManager::scriptObjInit11(EngineState *s, reg_t obj_pos) { return obj; } -Object *SegManager::scriptObjInit(EngineState *s, reg_t obj_pos) { - if (!isSci1_1) - return scriptObjInit0(s, obj_pos); +Object *SegManager::scriptObjInit(reg_t obj_pos) { + if (_version != SCI_VERSION_1_1) + return scriptObjInit0(obj_pos); else - return scriptObjInit11(s, obj_pos); + return scriptObjInit11(obj_pos); } LocalVariables *SegManager::allocLocalsSegment(Script *scr, int count) { @@ -588,7 +627,7 @@ void SegManager::scriptInitialiseLocals(reg_t location) { VERIFY(location.offset + 1 < (uint16)scr->buf_size, "Locals beyond end of script\n"); - if (isSci1_1) + if (_version == SCI_VERSION_1_1) count = READ_LE_UINT16(scr->buf + location.offset - 2); else count = (READ_LE_UINT16(scr->buf + location.offset - 2) - 4) >> 1; @@ -627,24 +666,25 @@ void SegManager::scriptRelocateExportsSci11(SegmentId seg) { } } -void SegManager::scriptInitialiseObjectsSci11(EngineState *s, SegmentId seg) { +void SegManager::scriptInitialiseObjectsSci11(SegmentId seg) { Script *scr = getScript(seg); byte *seeker = scr->heap_start + 4 + READ_LE_UINT16(scr->heap_start + 2) * 2; + SciVersion version = _version; // for the selector defines while (READ_LE_UINT16(seeker) == SCRIPT_OBJECT_MAGIC_NUMBER) { if (READ_LE_UINT16(seeker + 14) & SCRIPT_INFO_CLASS) { int classpos = seeker - scr->buf; int species = READ_LE_UINT16(seeker + 10); - if (species < 0 || species >= (int)s->_classtable.size()) { + if (species < 0 || species >= (int)_classtable.size()) { error("Invalid species %d(0x%x) not in interval [0,%d) while instantiating script %d\n", - species, species, s->_classtable.size(), scr->nr); + species, species, _classtable.size(), scr->nr); return; } - s->_classtable[species].script = scr->nr; - s->_classtable[species].reg.segment = seg; - s->_classtable[species].reg.offset = classpos; + _classtable[species].script = scr->nr; + _classtable[species].reg.segment = seg; + _classtable[species].reg.offset = classpos; } seeker += READ_LE_UINT16(seeker + 2) * 2; } @@ -656,12 +696,12 @@ void SegManager::scriptInitialiseObjectsSci11(EngineState *s, SegmentId seg) { reg.segment = seg; reg.offset = seeker - scr->buf; - obj = scriptObjInit(s, reg); + obj = scriptObjInit(reg); #if 0 if (obj->_variables[5].offset != 0xffff) { obj->_variables[5] = INST_LOOKUP_CLASS(obj->_variables[5].offset); - base_obj = obj_get(s, obj->_variables[5]); + base_obj = obj_get(s->seg_manager, s->_version, obj->_variables[5]); obj->variable_names_nr = base_obj->variables_nr; obj->base_obj = base_obj->base_obj; } diff --git a/engines/sci/engine/seg_manager.h b/engines/sci/engine/seg_manager.h index 9d406f559f..f73c788b37 100644 --- a/engines/sci/engine/seg_manager.h +++ b/engines/sci/engine/seg_manager.h @@ -43,12 +43,22 @@ namespace Sci { (((mgr)._heap[index] && ((mgr)._heap[index]->getType() == MEM_OBJ_SCRIPT || (mgr)._heap[index]->getType() == MEM_OBJ_CLONES))? (mgr)._heap[index] \ : NULL): NULL) +/** + * Parameters for getSegment() + */ +typedef enum { + SCRIPT_GET_DONT_LOAD = 0, /**< Fail if not loaded */ + SCRIPT_GET_LOAD = 1, /**< Load, if neccessary */ + SCRIPT_GET_LOCK = 3 /**< Load, if neccessary, and lock */ +} SCRIPT_GET; + + class SegManager : public Common::Serializable { public: /** * Initialize the segment manager */ - SegManager(bool sci1_1); + SegManager(ResourceManager *resMgr, SciVersion version); /** * Deallocate all memory associated with the segment manager @@ -61,14 +71,12 @@ public: /** * Allocate a script into the segment manager - * @param s The state containing resource manager - * handlers to load the script data * @param script_nr The number of the script to load * @param seg_id The segment ID of the newly allocated segment, * on success * @return 0 on failure, 1 on success */ - Script *allocateScript(EngineState *s, int script_nr, SegmentId *seg_id); + Script *allocateScript(int script_nr, SegmentId *seg_id); // The script must then be initialised; see section (1b.), below. @@ -154,7 +162,7 @@ public: * @returns A newly created Object describing the object, * stored within the relevant script */ - Object *scriptObjInit(EngineState *s, reg_t obj_pos); + Object *scriptObjInit(reg_t obj_pos); /** * Informs the segment manager that a code block must be relocated @@ -317,13 +325,20 @@ public: */ byte *dereference(reg_t reg, int *size); - + /** + * Determines the segment occupied by a certain script + * @param[in] script_id The script in question + * @param[in] load One of SCRIPT_GET_* + * @return The script's segment, or 0 on failure + */ + SegmentId getSegment(int script_nr, SCRIPT_GET load); + reg_t get_class_address(int classnr, SCRIPT_GET lock, reg_t caller); void heapRelocate(reg_t block); void scriptRelocateExportsSci11(SegmentId seg); - void scriptInitialiseObjectsSci11(EngineState *s, SegmentId seg); - int initialiseScript(Script &scr, EngineState *s, int script_nr); + void scriptInitialiseObjectsSci11(SegmentId seg); + int initialiseScript(Script &scr, int script_nr); private: IntMapper *id_seg_map; ///< id - script id; seg - index of heap @@ -331,7 +346,9 @@ public: // TODO: make private Common::Array<MemObject *> _heap; int reserved_id; int exports_wide; - bool isSci1_1; + SciVersion _version; + ResourceManager *_resMgr; + Common::Array<Class> _classtable; /**< Table of all classes */ SegmentId Clones_seg_id; ///< ID of the (a) clones segment SegmentId Lists_seg_id; ///< ID of the (a) list segment @@ -351,9 +368,9 @@ private: int relocateObject(Object *obj, SegmentId segment, int location); int findFreeId(int *id); - static void setScriptSize(Script &scr, EngineState *s, int script_nr); - Object *scriptObjInit0(EngineState *s, reg_t obj_pos); - Object *scriptObjInit11(EngineState *s, reg_t obj_pos); + void setScriptSize(Script &scr, int script_nr); + Object *scriptObjInit0(reg_t obj_pos); + Object *scriptObjInit11(reg_t obj_pos); /** * Check segment validity diff --git a/engines/sci/engine/state.h b/engines/sci/engine/state.h index 39dcbb0c0b..c8e9139f27 100644 --- a/engines/sci/engine/state.h +++ b/engines/sci/engine/state.h @@ -291,8 +291,6 @@ public: reg_t game_obj; /**< Pointer to the game object */ - Common::Array<Class> _classtable; /**< Table of all classes */ - SegManager *seg_manager; int gc_countdown; /**< Number of kernel calls until next gc */ diff --git a/engines/sci/engine/vm.cpp b/engines/sci/engine/vm.cpp index ae07c314d4..fbd3bc3baf 100644 --- a/engines/sci/engine/vm.cpp +++ b/engines/sci/engine/vm.cpp @@ -187,34 +187,6 @@ static void validate_write_var(reg_t *r, reg_t *stack_base, int type, int max, i #define OBJ_PROPERTY(o, p) (validate_property(o, p)) -reg_t get_class_address(EngineState *s, int classnr, SCRIPT_GET lock, reg_t caller) { - - if (NULL == s) { - warning("vm.c: get_class_address(): NULL passed for \"s\""); - return NULL_REG; - } - - if (classnr < 0 || (int)s->_classtable.size() <= classnr || s->_classtable[classnr].script < 0) { - error("[VM] Attempt to dereference class %x, which doesn't exist (max %x)", classnr, s->_classtable.size()); - return NULL_REG; - } else { - Class *the_class = &s->_classtable[classnr]; - if (!the_class->reg.segment) { - script_get_segment(s, the_class->script, lock); - - if (!the_class->reg.segment) { - error("[VM] Trying to instantiate class %x by instantiating script 0x%x (%03d) failed;" - " Entering debugger.", classnr, the_class->script, the_class->script); - return NULL_REG; - } - } else - if (caller.segment != the_class->reg.segment) - s->seg_manager->getScript(the_class->reg.segment)->incrementLockers(); - - return the_class->reg; - } -} - // Operating on the stack // 16 bit: #define PUSH(v) PUSH32(make_reg(0, v)) @@ -236,7 +208,7 @@ ExecStack *execute_method(EngineState *s, uint16 script, uint16 pubfunct, StackP Script *scr = s->seg_manager->getScriptIfLoaded(seg); if (!scr) // Script not present yet? - seg = script_instantiate(s, script); + seg = script_instantiate(s->resmgr, s->seg_manager, s->_version, script); else scr->unmarkDeleted(); @@ -313,7 +285,7 @@ ExecStack *send_selector(EngineState *s, reg_t send_obj, reg_t work_obj, StackPt Breakpoint *bp; char method_name [256]; - sprintf(method_name, "%s::%s", obj_get_name(s, send_obj), ((SciEngine*)g_engine)->getKernel()->getSelectorName(selector).c_str()); + sprintf(method_name, "%s::%s", obj_get_name(s->seg_manager, s->_version, send_obj), ((SciEngine*)g_engine)->getKernel()->getSelectorName(selector).c_str()); bp = s->bp_list; while (bp) { @@ -501,10 +473,6 @@ void vm_handle_fatal_error(EngineState *s, int line, const char *file) { error("Fatal VM error in %s, L%d; aborting...", file, line); } -static Script *script_locate_by_segment(EngineState *s, SegmentId seg) { - return s->seg_manager->getScriptIfLoaded(seg); -} - static reg_t pointer_add(EngineState *s, reg_t base, int offset) { MemObject *mobj = GET_SEGMENT_ANY(*s->seg_manager, base.segment); @@ -559,8 +527,8 @@ void run_vm(EngineState *s, int restoring) { // Current execution data: scriptState.xs = &(s->_executionStack.back()); ExecStack *xs_new = NULL; - Object *obj = obj_get(s, scriptState.xs->objp); - Script *local_script = script_locate_by_segment(s, scriptState.xs->local_segment); + Object *obj = obj_get(s->seg_manager, s->_version, scriptState.xs->objp); + Script *local_script = s->seg_manager->getScriptIfLoaded(scriptState.xs->local_segment); int old_execution_stack_base = s->execution_stack_base; // Used to detect the stack bottom, for "physical" returns const byte *code_buf = NULL; // (Avoid spurious warning) @@ -606,7 +574,7 @@ void run_vm(EngineState *s, int restoring) { scriptState.xs = &(s->_executionStack.back()); s->_executionStackPosChanged = false; - scr = script_locate_by_segment(s, scriptState.xs->addr.pc.segment); + scr = s->seg_manager->getScriptIfLoaded(scriptState.xs->addr.pc.segment); if (!scr) { // No script? Implicit return via fake instruction buffer warning("Running on non-existant script in segment %x", scriptState.xs->addr.pc.segment); @@ -619,12 +587,12 @@ void run_vm(EngineState *s, int restoring) { scr = NULL; obj = NULL; } else { - obj = obj_get(s, scriptState.xs->objp); + obj = obj_get(s->seg_manager, s->_version, scriptState.xs->objp); code_buf = scr->buf; #ifndef DISABLE_VALIDATIONS code_buf_size = scr->buf_size; #endif - local_script = script_locate_by_segment(s, scriptState.xs->local_segment); + local_script = s->seg_manager->getScriptIfLoaded(scriptState.xs->local_segment); if (!local_script) { warning("Could not find local script from segment %x", scriptState.xs->local_segment); local_script = NULL; @@ -1077,7 +1045,7 @@ void run_vm(EngineState *s, int restoring) { break; case 0x28: // class - s->r_acc = get_class_address(s, (unsigned)opparams[0], SCRIPT_GET_LOCK, + s->r_acc = s->seg_manager->get_class_address((unsigned)opparams[0], SCRIPT_GET_LOCK, scriptState.xs->addr.pc); break; @@ -1097,7 +1065,7 @@ void run_vm(EngineState *s, int restoring) { break; case 0x2b: // super - r_temp = get_class_address(s, opparams[0], SCRIPT_GET_LOAD, scriptState.xs->addr.pc); + r_temp = s->seg_manager->get_class_address(opparams[0], SCRIPT_GET_LOAD, scriptState.xs->addr.pc); if (!r_temp.segment) error("[VM]: Invalid superclass in object"); @@ -1432,6 +1400,7 @@ void run_vm(EngineState *s, int restoring) { static int _obj_locate_varselector(EngineState *s, Object *obj, Selector slc) { // Determines if obj explicitly defines slc as a varselector // Returns -1 if not found + SciVersion version = s->_version; // for the selector defines if (s->_version < SCI_VERSION_1_1) { int varnum = obj->variable_names_nr; @@ -1452,7 +1421,7 @@ static int _obj_locate_varselector(EngineState *s, Object *obj, Selector slc) { int varnum = obj->_variables[1].offset; if (!(obj->_variables[SCRIPT_INFO_SELECTOR].offset & SCRIPT_INFO_CLASS)) - buf = ((byte *) obj_get(s, obj->_variables[SCRIPT_SUPERCLASS_SELECTOR])->base_vars); + buf = ((byte *) obj_get(s->seg_manager, s->_version, obj->_variables[SCRIPT_SUPERCLASS_SELECTOR])->base_vars); for (i = 0; i < varnum; i++) if (READ_LE_UINT16(buf + (i << 1)) == slc) // Found it? @@ -1478,6 +1447,7 @@ static int _class_locate_funcselector(EngineState *s, Object *obj, Selector slc) static SelectorType _lookup_selector_function(EngineState *s, int seg_id, Object *obj, Selector selector_id, reg_t *fptr) { int index; + SciVersion version = s->_version; // for the selector defines // "recursive" lookup @@ -1492,7 +1462,7 @@ static SelectorType _lookup_selector_function(EngineState *s, int seg_id, Object return kSelectorMethod; } else { seg_id = obj->_variables[SCRIPT_SUPERCLASS_SELECTOR].segment; - obj = obj_get(s, obj->_variables[SCRIPT_SUPERCLASS_SELECTOR]); + obj = obj_get(s->seg_manager, s->_version, obj->_variables[SCRIPT_SUPERCLASS_SELECTOR]); } } @@ -1500,9 +1470,10 @@ static SelectorType _lookup_selector_function(EngineState *s, int seg_id, Object } SelectorType lookup_selector(EngineState *s, reg_t obj_location, Selector selector_id, ObjVarRef *varp, reg_t *fptr) { - Object *obj = obj_get(s, obj_location); + Object *obj = obj_get(s->seg_manager, s->_version, obj_location); Object *species; int index; + SciVersion version = s->_version; // for the selector defines // Early SCI versions used the LSB in the selector ID as a read/write // toggle, meaning that we must remove it for selector lookup. @@ -1517,7 +1488,7 @@ SelectorType lookup_selector(EngineState *s, reg_t obj_location, Selector select if (IS_CLASS(obj)) species = obj; else - species = obj_get(s, obj->_variables[SCRIPT_SPECIES_SELECTOR]); + species = obj_get(s->seg_manager, s->_version, obj->_variables[SCRIPT_SPECIES_SELECTOR]); if (!obj) { @@ -1540,65 +1511,27 @@ SelectorType lookup_selector(EngineState *s, reg_t obj_location, Selector select return _lookup_selector_function(s, obj_location.segment, obj, selector_id, fptr); } -SegmentId script_get_segment(EngineState *s, int script_nr, SCRIPT_GET load) { - SegmentId segment; - - if ((load & SCRIPT_GET_LOAD) == SCRIPT_GET_LOAD) - script_instantiate(s, script_nr); - - segment = s->seg_manager->segGet(script_nr); - - if (segment > 0) { - if ((load & SCRIPT_GET_LOCK) == SCRIPT_GET_LOCK) - s->seg_manager->getScript(segment)->incrementLockers(); - - return segment; - } else - return 0; +reg_t script_lookup_export(SegManager *segManager, int script_nr, int export_index) { + SegmentId seg = segManager->getSegment(script_nr, SCRIPT_GET_DONT_LOAD); + Script *script = segManager->getScriptIfLoaded(seg); + return make_reg(seg, READ_LE_UINT16((byte *)(script->export_table + export_index))); } -reg_t script_lookup_export(EngineState *s, int script_nr, int export_index) { - SegmentId seg = script_get_segment(s, script_nr, SCRIPT_GET_DONT_LOAD); - Script *script = NULL; +#define INST_LOOKUP_CLASS(id) ((id == 0xffff)? NULL_REG : segManager->get_class_address(id, SCRIPT_GET_LOCK, reg)) -#ifndef DISABLE_VALIDATIONS - if (!seg) - error("script_lookup_export(): script.%03d (0x%x) is invalid or not loaded", - script_nr, script_nr); -#endif - - script = script_locate_by_segment(s, seg); - -#ifndef DISABLE_VALIDATIONS - if (script && export_index < script->exports_nr && export_index >= 0) -#endif - return make_reg(seg, READ_LE_UINT16((byte *)(script->export_table + export_index))); -#ifndef DISABLE_VALIDATIONS - else { - if (!script) - error("script_lookup_export(): script.%03d missing", script_nr); - else - error("script_lookup_export(): script.%03d: Sought invalid export %d/%d", - script_nr, export_index, script->exports_nr); - } -#endif -} - -#define INST_LOOKUP_CLASS(id) ((id == 0xffff)? NULL_REG : get_class_address(s, id, SCRIPT_GET_LOCK, reg)) - -int script_instantiate_common(EngineState *s, int script_nr, Resource **script, Resource **heap, int *was_new) { +int script_instantiate_common(ResourceManager *resMgr, SegManager *segManager, SciVersion version, int script_nr, Resource **script, Resource **heap, int *was_new) { int seg_id; reg_t reg; *was_new = 1; - *script = s->resmgr->findResource(ResourceId(kResourceTypeScript, script_nr), 0); - if (s->_version >= SCI_VERSION_1_1) - *heap = s->resmgr->findResource(ResourceId(kResourceTypeHeap, script_nr), 0); + *script = resMgr->findResource(ResourceId(kResourceTypeScript, script_nr), 0); + if (version >= SCI_VERSION_1_1) + *heap = resMgr->findResource(ResourceId(kResourceTypeHeap, script_nr), 0); - if (!*script || (s->_version >= SCI_VERSION_1_1 && !heap)) { + if (!*script || (version >= SCI_VERSION_1_1 && !heap)) { warning("Script 0x%x requested but not found", script_nr); - if (s->_version >= SCI_VERSION_1_1) { + if (version >= SCI_VERSION_1_1) { if (*heap) warning("Inconsistency: heap resource WAS found"); else if (*script) @@ -1607,13 +1540,8 @@ int script_instantiate_common(EngineState *s, int script_nr, Resource **script, return 0; } - if (NULL == s) { - warning("script_instantiate_common(): script_instantiate(): NULL passed for \"s\""); - return 0; - } - - seg_id = s->seg_manager->segGet(script_nr); - Script *scr = script_locate_by_segment(s, seg_id); + seg_id = segManager->segGet(script_nr); + Script *scr = segManager->getScriptIfLoaded(seg_id); if (scr) { if (!scr->isMarkedAsDeleted()) { scr->incrementLockers(); @@ -1622,14 +1550,14 @@ int script_instantiate_common(EngineState *s, int script_nr, Resource **script, scr->freeScript(); } } else { - scr = s->seg_manager->allocateScript(s, script_nr, &seg_id); + scr = segManager->allocateScript(script_nr, &seg_id); if (!scr) { // ALL YOUR SCRIPT BASE ARE BELONG TO US error("Not enough heap space for script size 0x%x of script 0x%x (Should this happen?)", (*script)->size, script_nr); return 0; } } - s->seg_manager->initialiseScript(*scr, s, script_nr); + segManager->initialiseScript(*scr, script_nr); reg.segment = seg_id; reg.offset = 0; @@ -1645,7 +1573,7 @@ int script_instantiate_common(EngineState *s, int script_nr, Resource **script, return seg_id; } -int script_instantiate_sci0(EngineState *s, int script_nr) { +int script_instantiate_sci0(ResourceManager *resMgr, SegManager *segManager, SciVersion version, int script_nr) { int objtype; unsigned int objlength; reg_t reg; @@ -1655,7 +1583,7 @@ int script_instantiate_sci0(EngineState *s, int script_nr) { Resource *script; int was_new; - seg_id = script_instantiate_common(s, script_nr, &script, NULL, &was_new); + seg_id = script_instantiate_common(resMgr, segManager, version, script_nr, &script, NULL, &was_new); if (was_new) return seg_id; @@ -1663,7 +1591,7 @@ int script_instantiate_sci0(EngineState *s, int script_nr) { reg.segment = seg_id; reg.offset = 0; - Script *scr = s->seg_manager->getScript(seg_id); + Script *scr = segManager->getScript(seg_id); if (((SciEngine*)g_engine)->getKernel()->hasOldScriptHeader()) { // @@ -1678,7 +1606,7 @@ int script_instantiate_sci0(EngineState *s, int script_nr) { magic_pos_adder = 2; // Step over the funny prefix if (locals_nr) - s->seg_manager->scriptInitialiseLocalsZero(reg.segment, locals_nr); + segManager->scriptInitialiseLocalsZero(reg.segment, locals_nr); } else { scr->mcpyInOut(0, script->data, script->size); @@ -1717,24 +1645,24 @@ int script_instantiate_sci0(EngineState *s, int script_nr) { break; case SCI_OBJ_LOCALVARS: - s->seg_manager->scriptInitialiseLocals(data_base); + segManager->scriptInitialiseLocals(data_base); break; case SCI_OBJ_CLASS: { int classpos = addr.offset - SCRIPT_OBJECT_MAGIC_OFFSET; int species; species = scr->getHeap(addr.offset - SCRIPT_OBJECT_MAGIC_OFFSET + SCRIPT_SPECIES_OFFSET); - if (species < 0 || species >= (int)s->_classtable.size()) { + if (species < 0 || species >= (int)segManager->_classtable.size()) { error("Invalid species %d(0x%x) not in interval " "[0,%d) while instantiating script %d\n", - species, species, s->_classtable.size(), + species, species, segManager->_classtable.size(), script_nr); return 1; } - s->_classtable[species].script = script_nr; - s->_classtable[species].reg = addr; - s->_classtable[species].reg.offset = classpos; + segManager->_classtable[species].script = script_nr; + segManager->_classtable[species].reg = addr; + segManager->_classtable[species].reg.offset = classpos; // Set technical class position-- into the block allocated for it } break; @@ -1760,17 +1688,17 @@ int script_instantiate_sci0(EngineState *s, int script_nr) { switch (objtype) { case SCI_OBJ_CODE: - s->seg_manager->scriptAddCodeBlock(addr); + segManager->scriptAddCodeBlock(addr); break; case SCI_OBJ_OBJECT: case SCI_OBJ_CLASS: { // object or class? - Object *obj = s->seg_manager->scriptObjInit(s, addr); + Object *obj = segManager->scriptObjInit(addr); Object *base_obj; // Instantiate the superclass, if neccessary obj->_variables[SCRIPT_SPECIES_SELECTOR] = INST_LOOKUP_CLASS(obj->_variables[SCRIPT_SPECIES_SELECTOR].offset); - base_obj = obj_get(s, obj->_variables[SCRIPT_SPECIES_SELECTOR]); + base_obj = obj_get(segManager, version, obj->_variables[SCRIPT_SPECIES_SELECTOR]); obj->variable_names_nr = base_obj->_variables.size(); obj->base_obj = base_obj->base_obj; // Copy base from species class, as we need its selector IDs @@ -1791,24 +1719,24 @@ int script_instantiate_sci0(EngineState *s, int script_nr) { } while ((objtype != 0) && (((unsigned)reg.offset) < script->size - 2)); if (relocation >= 0) - s->seg_manager->scriptRelocate(make_reg(reg.segment, relocation)); + segManager->scriptRelocate(make_reg(reg.segment, relocation)); return reg.segment; // instantiation successful } -int script_instantiate_sci11(EngineState *s, int script_nr) { +int script_instantiate_sci11(ResourceManager *resMgr, SegManager *segManager, SciVersion version, int script_nr) { Resource *script, *heap; int seg_id; int heap_start; reg_t reg; int was_new; - seg_id = script_instantiate_common(s, script_nr, &script, &heap, &was_new); + seg_id = script_instantiate_common(resMgr, segManager, version, script_nr, &script, &heap, &was_new); if (was_new) return seg_id; - Script *scr = s->seg_manager->getScript(seg_id); + Script *scr = segManager->getScript(seg_id); heap_start = script->size; if (script->size & 2) @@ -1822,28 +1750,28 @@ int script_instantiate_sci11(EngineState *s, int script_nr) { reg.segment = seg_id; reg.offset = heap_start + 4; - s->seg_manager->scriptInitialiseLocals(reg); + segManager->scriptInitialiseLocals(reg); - s->seg_manager->scriptRelocateExportsSci11(seg_id); - s->seg_manager->scriptInitialiseObjectsSci11(s, seg_id); + segManager->scriptRelocateExportsSci11(seg_id); + segManager->scriptInitialiseObjectsSci11(seg_id); reg.offset = READ_LE_UINT16(heap->data); - s->seg_manager->heapRelocate(reg); + segManager->heapRelocate(reg); return seg_id; } -int script_instantiate(EngineState *s, int script_nr) { - if (s->_version >= SCI_VERSION_1_1) - return script_instantiate_sci11(s, script_nr); +int script_instantiate(ResourceManager *resMgr, SegManager *segManager, SciVersion version, int script_nr) { + if (version >= SCI_VERSION_1_1) + return script_instantiate_sci11(resMgr, segManager, version, script_nr); else - return script_instantiate_sci0(s, script_nr); + return script_instantiate_sci0(resMgr, segManager, version, script_nr); } -void script_uninstantiate_sci0(EngineState *s, int script_nr, SegmentId seg) { +void script_uninstantiate_sci0(SegManager *segManager, SciVersion version, int script_nr, SegmentId seg) { reg_t reg = make_reg(seg, ((SciEngine*)g_engine)->getKernel()->hasOldScriptHeader() ? 2 : 0); int objtype, objlength; - Script *scr = s->seg_manager->getScript(seg); + Script *scr = segManager->getScript(seg); // Make a pass over the object in order uninstantiate all superclasses objlength = 0; @@ -1866,13 +1794,13 @@ void script_uninstantiate_sci0(EngineState *s, int script_nr, SegmentId seg) { superclass = scr->getHeap(reg.offset + SCRIPT_SUPERCLASS_OFFSET); // Get superclass... if (superclass >= 0) { - int superclass_script = s->_classtable[superclass].script; + int superclass_script = segManager->_classtable[superclass].script; if (superclass_script == script_nr) { if (scr->getLockers()) scr->decrementLockers(); // Decrease lockers if this is us ourselves } else - script_uninstantiate(s, superclass_script); + script_uninstantiate(segManager, version, superclass_script); // Recurse to assure that the superclass lockers number gets decreased } @@ -1884,11 +1812,9 @@ void script_uninstantiate_sci0(EngineState *s, int script_nr, SegmentId seg) { } while (objtype != 0); } -void script_uninstantiate(EngineState *s, int script_nr) { - reg_t reg = make_reg(0, ((SciEngine*)g_engine)->getKernel()->hasOldScriptHeader() ? 2 : 0); - - reg.segment = s->seg_manager->segGet(script_nr); - Script *scr = script_locate_by_segment(s, reg.segment); +void script_uninstantiate(SegManager *segManager, SciVersion version, int script_nr) { + SegmentId segment = segManager->segGet(script_nr); + Script *scr = segManager->getScriptIfLoaded(segment); if (!scr) { // Is it already loaded? //warning("unloading script 0x%x requested although not loaded", script_nr); @@ -1902,12 +1828,12 @@ void script_uninstantiate(EngineState *s, int script_nr) { return; // Free all classtable references to this script - for (uint i = 0; i < s->_classtable.size(); i++) - if (s->_classtable[i].reg.segment == reg.segment) - s->_classtable[i].reg = NULL_REG; + for (uint i = 0; i < segManager->_classtable.size(); i++) + if (segManager->_classtable[i].reg.segment == segment) + segManager->_classtable[i].reg = NULL_REG; - if (s->_version < SCI_VERSION_1_1) - script_uninstantiate_sci0(s, script_nr, reg.segment); + if (version < SCI_VERSION_1_1) + script_uninstantiate_sci0(segManager, version, script_nr, segment); else warning("FIXME: Add proper script uninstantiation for SCI 1.1"); @@ -1999,8 +1925,8 @@ int game_run(EngineState **_s) { return 0; } -Object *obj_get(EngineState *s, reg_t offset) { - MemObject *mobj = GET_OBJECT_SEGMENT(*s->seg_manager, offset.segment); +Object *obj_get(SegManager *segManager, SciVersion version, reg_t offset) { + MemObject *mobj = GET_OBJECT_SEGMENT(*segManager, offset.segment); Object *obj = NULL; int idx; @@ -2023,8 +1949,8 @@ Object *obj_get(EngineState *s, reg_t offset) { return obj; } -const char *obj_get_name(EngineState *s, reg_t pos) { - Object *obj = obj_get(s, pos); +const char *obj_get_name(SegManager *segManager, SciVersion version, reg_t pos) { + Object *obj = obj_get(segManager, version, pos); if (!obj) return "<no such object>"; @@ -2032,7 +1958,7 @@ const char *obj_get_name(EngineState *s, reg_t pos) { if (nameReg.isNull()) return "<no name>"; - const char *name = (const char*)s->seg_manager->dereference(obj->_variables[SCRIPT_NAME_SELECTOR], NULL); + const char *name = (const char*)segManager->dereference(obj->_variables[SCRIPT_NAME_SELECTOR], NULL); if (!name) return "<invalid name>"; @@ -2056,7 +1982,7 @@ void shrink_execution_stack(EngineState *s, uint size) { } reg_t* ObjVarRef::getPointer(EngineState *s) const { - Object *o = obj_get(s, obj); + Object *o = obj_get(s->seg_manager, s->_version, obj); if (!o) return 0; return &(o->_variables[varindex]); } diff --git a/engines/sci/engine/vm.h b/engines/sci/engine/vm.h index ba225a9c00..8be318811d 100644 --- a/engines/sci/engine/vm.h +++ b/engines/sci/engine/vm.h @@ -29,6 +29,7 @@ /* VM and kernel declarations */ #include "sci/engine/vm_types.h" // for reg_t +#include "sci/resource.h" // for SciVersion #include "common/util.h" @@ -39,6 +40,8 @@ struct EngineState; typedef int sci_version_t; struct IntMapper; struct Object; +class ResourceManager; +extern enum SciVersion; /** Number of bytes to be allocated for the stack */ #define VM_STACK_SIZE 0x1000 @@ -67,12 +70,12 @@ struct Object; #define SCRIPT_FUNCTAREAPTR_MAGIC 8 -8 /** Offset of the name pointer */ -#define SCRIPT_NAME_OFFSET (s->_version < SCI_VERSION_1_1 ? 14 -8 : 16) -#define SCRIPT_NAME_SELECTOR (s->_version < SCI_VERSION_1_1 ? 3 : 8) +#define SCRIPT_NAME_OFFSET (version < SCI_VERSION_1_1 ? 14 -8 : 16) +#define SCRIPT_NAME_SELECTOR (version < SCI_VERSION_1_1 ? 3 : 8) /** Object-relative offset of the -info- selector */ -#define SCRIPT_INFO_OFFSET (s->_version < SCI_VERSION_1_1 ? 12 -8 : 14) -#define SCRIPT_INFO_SELECTOR (s->_version < SCI_VERSION_1_1 ? 2 : 7) +#define SCRIPT_INFO_OFFSET (version < SCI_VERSION_1_1 ? 12 -8 : 14) +#define SCRIPT_INFO_SELECTOR (version < SCI_VERSION_1_1 ? 2 : 7) /** Flag fo the -info- selector */ #define SCRIPT_INFO_CLONE 0x0001 @@ -84,18 +87,18 @@ struct Object; /** Magical object identifier */ #define SCRIPT_OBJECT_MAGIC_NUMBER 0x1234 /** Offset of this identifier */ -#define SCRIPT_OBJECT_MAGIC_OFFSET (s->_version < SCI_VERSION_1_1 ? -8 : 0) +#define SCRIPT_OBJECT_MAGIC_OFFSET (version < SCI_VERSION_1_1 ? -8 : 0) /** Script-relative offset of the species ID */ #define SCRIPT_SPECIES_OFFSET 8 -8 -#define SCRIPT_SUPERCLASS_OFFSET (s->_version < SCI_VERSION_1_1 ? 10 -8 : 12) +#define SCRIPT_SUPERCLASS_OFFSET (version < SCI_VERSION_1_1 ? 10 -8 : 12) /*---------------------------------*/ /* Script selector index variables */ /*---------------------------------*/ -#define SCRIPT_SPECIES_SELECTOR (s->_version < SCI_VERSION_1_1 ? 0 : 5) -#define SCRIPT_SUPERCLASS_SELECTOR (s->_version < SCI_VERSION_1_1 ? 1 : 6) +#define SCRIPT_SPECIES_SELECTOR (version < SCI_VERSION_1_1 ? 0 : 5) +#define SCRIPT_SUPERCLASS_SELECTOR (version < SCI_VERSION_1_1 ? 1 : 6) #define SCRIPT_CLASSSCRIPT_SELECTOR 4 /** Magic adjustment value for lofsa and lofss */ @@ -467,31 +470,13 @@ SelectorType lookup_selector(EngineState *s, reg_t obj, Selector selectorid, ObjVarRef *varp, reg_t *fptr); /** - * Parameters for script_get_segment() - */ -typedef enum { - SCRIPT_GET_DONT_LOAD = 0, /**< Fail if not loaded */ - SCRIPT_GET_LOAD = 1, /**< Load, if neccessary */ - SCRIPT_GET_LOCK = 3 /**< Load, if neccessary, and lock */ -} SCRIPT_GET; - -/** - * Determines the segment occupied by a certain script - * @param[in] s The state to operate on - * @param[in] script_id The script in question - * @param[in] load One of SCRIPT_GET_* - * @return The script's segment, or 0 on failure - */ -SegmentId script_get_segment(EngineState *s, int script_id, SCRIPT_GET load); - -/** * Looks up an entry of the exports table of a script - * @param[in] s The state to operate on + * @param[in] segManager The segment manager * @param[in] script_nr The script to look up in * @param[out] export_index The index of the export entry to look up * @return The handle */ -reg_t script_lookup_export(EngineState *s, int script_nr, int export_index); +reg_t script_lookup_export(SegManager *segManager, int script_nr, int export_index); /** * Makes sure that a script and its superclasses get loaded to the heap. @@ -499,21 +484,24 @@ reg_t script_lookup_export(EngineState *s, int script_nr, int export_index); * increased. All scripts containing superclasses of this script are loaded * recursively as well, unless 'recursive' is set to zero. The * complementary function is "script_uninstantiate()" below. - * @param[in] s The state to operate on - * @param[in] script_nr The script number to load - * @return The script's segment ID or 0 if out of heap + * @param[in] resMgr The resource manager + * @param[in] segManager The segment manager + * @param[in] version The SCI version to use + * @param[in] script_nr The script number to load + * @return The script's segment ID or 0 if out of heap */ -int script_instantiate(EngineState *s, int script_nr); +int script_instantiate(ResourceManager *resMgr, SegManager *segManager, SciVersion version, int script_nr); /** * Decreases the numer of lockers of a script and unloads it if that number * reaches zero. * This function will recursively unload scripts containing its * superclasses, if those aren't locked by other scripts as well. - * @param[in] s The state to operate on + * @param[in] segManager The segment manager + * @param[in] version The SCI version to use * @param[in] script_nr The script number that is requestet to be unloaded */ -void script_uninstantiate(EngineState *s, int script_nr); +void script_uninstantiate(SegManager *segManager, SciVersion version, int script_nr); /** * Initializes an SCI game @@ -613,7 +601,7 @@ int kfree(EngineState *s, reg_t handle); * in a static buffer and need not be freed (neither may * it be modified). */ -const char *obj_get_name(EngineState *s, reg_t pos); +const char *obj_get_name(SegManager *segManager, SciVersion version, reg_t pos); /** * Retrieves an object from the specified location @@ -621,7 +609,7 @@ const char *obj_get_name(EngineState *s, reg_t pos); * @param[in] offset The object's offset * @return The object in question, or NULL if there is none */ -Object *obj_get(EngineState *s, reg_t offset); +Object *obj_get(SegManager *segManager, SciVersion version, reg_t offset); /** * Shrink execution stack to size. |