diff options
Diffstat (limited to 'engines/sci/engine/vm.cpp')
| -rw-r--r-- | engines/sci/engine/vm.cpp | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/engines/sci/engine/vm.cpp b/engines/sci/engine/vm.cpp index 64e6c045db..3e12084ed6 100644 --- a/engines/sci/engine/vm.cpp +++ b/engines/sci/engine/vm.cpp @@ -239,8 +239,9 @@ ExecStack *execute_method(EngineState *s, uint16 script, uint16 pubfunct, StackP // Check if a breakpoint is set on this method g_sci->checkExportBreakpoint(script, pubfunct); + assert(argp[0].toUint16() == argc); // The first argument is argc ExecStack xstack(calling_obj, calling_obj, sp, argc, argp, - seg, make_reg32(seg, exportAddr), -1, pubfunct, -1, + seg, make_reg32(seg, exportAddr), -1, -1, -1, pubfunct, -1, s->_executionStack.size() - 1, EXEC_STACK_TYPE_CALL); s->_executionStack.push_back(xstack); return &(s->_executionStack.back()); @@ -312,8 +313,9 @@ ExecStack *send_selector(EngineState *s, reg_t send_obj, reg_t work_obj, StackPt if (activeBreakpointTypes || DebugMan.isDebugChannelEnabled(kDebugLevelScripts)) debugSelectorCall(send_obj, selector, argc, argp, varp, funcp, s->_segMan, selectorType); + assert(argp[0].toUint16() == argc); // The first argument is argc ExecStack xstack(work_obj, send_obj, curSP, argc, argp, - 0xFFFF, curFP, selector, -1, -1, + 0xFFFF, curFP, selector, -1, -1, -1, -1, origin, stackType); if (selectorType == kSelectorVariable) @@ -335,12 +337,12 @@ ExecStack *send_selector(EngineState *s, reg_t send_obj, reg_t work_obj, StackPt return s->_executionStack.empty() ? NULL : &(s->_executionStack.back()); } -static void addKernelCallToExecStack(EngineState *s, int kernelCallNr, int argc, reg_t *argv) { +static void addKernelCallToExecStack(EngineState *s, int kernelCallNr, int kernelSubCallNr, int argc, reg_t *argv) { // Add stack frame to indicate we're executing a callk. // This is useful in debugger backtraces if this // kernel function calls a script itself. ExecStack xstack(NULL_REG, NULL_REG, NULL, argc, argv - 1, 0xFFFF, make_reg32(0, 0), - kernelCallNr, -1, -1, s->_executionStack.size() - 1, EXEC_STACK_TYPE_KERNEL); + -1, kernelCallNr, kernelSubCallNr, -1, -1, s->_executionStack.size() - 1, EXEC_STACK_TYPE_KERNEL); s->_executionStack.push_back(xstack); } @@ -386,7 +388,8 @@ static void callKernelFunc(EngineState *s, int kernelCallNr, int argc) { // Call kernel function if (!kernelCall.subFunctionCount) { - addKernelCallToExecStack(s, kernelCallNr, argc, argv); + argv[-1] = make_reg(0, argc); // The first argument is argc + addKernelCallToExecStack(s, kernelCallNr, -1, argc, argv); s->r_acc = kernelCall.function(s, argc, argv); if (kernelCall.debugLogging) @@ -444,7 +447,8 @@ static void callKernelFunc(EngineState *s, int kernelCallNr, int argc) { } if (!kernelSubCall.function) error("[VM] k%s: subfunction ID %d requested, but not available", kernelCall.name, subId); - addKernelCallToExecStack(s, kernelCallNr, argc, argv); + argv[-1] = make_reg(0, argc); // The first argument is argc + addKernelCallToExecStack(s, kernelCallNr, subId, argc, argv); s->r_acc = kernelSubCall.function(s, argc, argv); if (kernelSubCall.debugLogging) @@ -834,14 +838,15 @@ void run_vm(EngineState *s) { int argc = (opparams[1] >> 1) // Given as offset, but we need count + 1 + s->r_rest; StackPtr call_base = s->xs->sp - argc; - s->xs->sp[1].incOffset(s->r_rest); uint32 localCallOffset = s->xs->addr.pc.getOffset() + opparams[0]; + int final_argc = (call_base->requireUint16()) + s->r_rest; + call_base[0] = make_reg(0, final_argc); // The first argument is argc ExecStack xstack(s->xs->objp, s->xs->objp, s->xs->sp, - (call_base->requireUint16()) + s->r_rest, call_base, + final_argc, call_base, s->xs->local_segment, make_reg32(s->xs->addr.pc.getSegment(), localCallOffset), - NULL_SELECTOR, -1, localCallOffset, s->_executionStack.size() - 1, + NULL_SELECTOR, -1, -1, -1, localCallOffset, s->_executionStack.size() - 1, EXEC_STACK_TYPE_CALL); s->_executionStack.push_back(xstack); |