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author | Willem Jan Palenstijn | 2017-05-26 12:52:55 +0200 |
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committer | Willem Jan Palenstijn | 2017-06-10 21:32:35 +0200 |
commit | e9867356f5ccedf5d9a8a087852230b416d8d458 (patch) | |
tree | 5dd7c4f76e52264f26f070ca3232be21ff439d3d /engines | |
parent | 1e5c965a2bf038193af93663bfe99d65a4b0f7cc (diff) | |
download | scummvm-rg350-e9867356f5ccedf5d9a8a087852230b416d8d458.tar.gz scummvm-rg350-e9867356f5ccedf5d9a8a087852230b416d8d458.tar.bz2 scummvm-rg350-e9867356f5ccedf5d9a8a087852230b416d8d458.zip |
SCI: Handle selector read/write breakpoints from opcodes
Diffstat (limited to 'engines')
-rw-r--r-- | engines/sci/engine/scriptdebug.cpp | 31 | ||||
-rw-r--r-- | engines/sci/engine/scriptdebug.h | 2 | ||||
-rw-r--r-- | engines/sci/engine/vm.cpp | 52 |
3 files changed, 82 insertions, 3 deletions
diff --git a/engines/sci/engine/scriptdebug.cpp b/engines/sci/engine/scriptdebug.cpp index 6a2324e4ee..28c7b950de 100644 --- a/engines/sci/engine/scriptdebug.cpp +++ b/engines/sci/engine/scriptdebug.cpp @@ -804,6 +804,37 @@ void debugSelectorCall(reg_t send_obj, Selector selector, int argc, StackPtr arg } // switch } +void debugPropertyAccess(Object *obj, reg_t objp, unsigned int index, reg_t curValue, reg_t newValue, SegManager *segMan, BreakpointType breakpointType) { + const Object *var_container = obj; + if (!obj->isClass() && getSciVersion() != SCI_VERSION_3) + var_container = segMan->getObject(obj->getSuperClassSelector()); + if ((index >> 1) >= var_container->getVarCount()) { + // TODO: error, warning, debug? + return; + } + uint16 varSelector = var_container->getVarSelector(index >> 1); + if (g_sci->checkSelectorBreakpoint(breakpointType, objp, varSelector)) { + // checkSelectorBreakpoint has already triggered the breakpoint. + // We just output the relevant data here. + + Console *con = g_sci->getSciDebugger(); + const char *objectName = segMan->getObjectName(objp); + const char *selectorName = g_sci->getKernel()->getSelectorName(varSelector).c_str(); + if (breakpointType == BREAK_SELECTORWRITE) { + con->debugPrintf("Write to selector (%s:%s): change %04x:%04x to %04x:%04x\n", + objectName, selectorName, + PRINT_REG(curValue), PRINT_REG(newValue)); + } else if (breakpointType == BREAK_SELECTORREAD) { + con->debugPrintf("Read from selector (%s:%s): %04x:%04x\n", + objectName, selectorName, + PRINT_REG(curValue)); + + } else { + assert(false); + } + } +} + void logKernelCall(const KernelFunction *kernelCall, const KernelSubFunction *kernelSubCall, EngineState *s, int argc, reg_t *argv, reg_t result) { Kernel *kernel = g_sci->getKernel(); if (!kernelSubCall) { diff --git a/engines/sci/engine/scriptdebug.h b/engines/sci/engine/scriptdebug.h index 15e71343de..964b8a4b54 100644 --- a/engines/sci/engine/scriptdebug.h +++ b/engines/sci/engine/scriptdebug.h @@ -31,6 +31,8 @@ extern const char *opcodeNames[]; void debugSelectorCall(reg_t send_obj, Selector selector, int argc, StackPtr argp, ObjVarRef &varp, reg_t funcp, SegManager *segMan, SelectorType selectorType); +void debugPropertyAccess(Object *obj, reg_t objp, unsigned int index, reg_t curValue, reg_t newValue, SegManager *segMan, BreakpointType breakpointType); + void logKernelCall(const KernelFunction *kernelCall, const KernelSubFunction *kernelSubCall, EngineState *s, int argc, reg_t *argv, reg_t result); } diff --git a/engines/sci/engine/vm.cpp b/engines/sci/engine/vm.cpp index edffa60b09..1e088d6d7c 100644 --- a/engines/sci/engine/vm.cpp +++ b/engines/sci/engine/vm.cpp @@ -1129,29 +1129,60 @@ void run_vm(EngineState *s) { case op_pToa: // 0x31 (49) // Property To Accumulator + if (g_sci->_debugState._activeBreakpointTypes & BREAK_SELECTORREAD) { + debugPropertyAccess(obj, s->xs->objp, opparams[0], + validate_property(s, obj, opparams[0]), NULL_REG, + s->_segMan, BREAK_SELECTORREAD); + } s->r_acc = validate_property(s, obj, opparams[0]); break; case op_aTop: // 0x32 (50) + { // Accumulator To Property - validate_property(s, obj, opparams[0]) = s->r_acc; + reg_t &opProperty = validate_property(s, obj, opparams[0]); + if (g_sci->_debugState._activeBreakpointTypes & BREAK_SELECTORWRITE) { + debugPropertyAccess(obj, s->xs->objp, opparams[0], + opProperty, s->r_acc, + s->_segMan, BREAK_SELECTORWRITE); + } + + opProperty = s->r_acc; #ifdef ENABLE_SCI32 updateInfoFlagViewVisible(obj, opparams[0], true); #endif break; + } case op_pTos: // 0x33 (51) + { // Property To Stack - PUSH32(validate_property(s, obj, opparams[0])); + reg_t value = validate_property(s, obj, opparams[0]); + if (g_sci->_debugState._activeBreakpointTypes & BREAK_SELECTORREAD) { + debugPropertyAccess(obj, s->xs->objp, opparams[0], + value, NULL_REG, + s->_segMan, BREAK_SELECTORREAD); + } + PUSH32(value); break; + } case op_sTop: // 0x34 (52) + { // Stack To Property - validate_property(s, obj, opparams[0]) = POP32(); + reg_t newValue = POP32(); + reg_t &opProperty = validate_property(s, obj, opparams[0]); + if (g_sci->_debugState._activeBreakpointTypes & BREAK_SELECTORWRITE) { + debugPropertyAccess(obj, s->xs->objp, opparams[0], + opProperty, newValue, + s->_segMan, BREAK_SELECTORWRITE); + } + opProperty = newValue; #ifdef ENABLE_SCI32 updateInfoFlagViewVisible(obj, opparams[0], true); #endif break; + } case op_ipToa: // 0x35 (53) case op_dpToa: // 0x36 (54) @@ -1161,10 +1192,25 @@ void run_vm(EngineState *s) { // Increment/decrement a property and copy to accumulator, // or push to stack reg_t &opProperty = validate_property(s, obj, opparams[0]); + reg_t oldValue = opProperty; + + if (g_sci->_debugState._activeBreakpointTypes & BREAK_SELECTORREAD) { + debugPropertyAccess(obj, s->xs->objp, opparams[0], + oldValue, NULL_REG, + s->_segMan, BREAK_SELECTORREAD); + } + if (opcode & 1) opProperty += 1; else opProperty -= 1; + + if (g_sci->_debugState._activeBreakpointTypes & BREAK_SELECTORWRITE) { + debugPropertyAccess(obj, s->xs->objp, opparams[0], + oldValue, opProperty, + s->_segMan, BREAK_SELECTORWRITE); + } + #ifdef ENABLE_SCI32 updateInfoFlagViewVisible(obj, opparams[0], true); #endif |