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jscipt: Use passed copy of arguments if they are alread at the top of the stack. 

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Jacek Caban 2016-07-28 18:44:57 +02:00 committed by Alexandre Julliard
parent 5e4d3826ec
commit b0dcbbdbee
1 changed files with 17 additions and 11 deletions
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28
dlls/jscript/engine.c
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@ -2591,19 +2591,25 @@ static HRESULT bind_event_target(script_ctx_t *ctx, function_code_t *func, jsdis
static HRESULT setup_scope(script_ctx_t *ctx, call_frame_t *frame, unsigned argc, jsval_t *argv) static HRESULT setup_scope(script_ctx_t *ctx, call_frame_t *frame, unsigned argc, jsval_t *argv)
{ {
const unsigned orig_stack = ctx->stack_top;
unsigned i; unsigned i;
jsval_t v; jsval_t v;
HRESULT hres; HRESULT hres;
frame->arguments_off = ctx->stack_top; /* If arguments are already on the stack, we may use them. */
if(argv + argc == ctx->stack + ctx->stack_top) {
for(i = 0; i < argc; i++) { frame->arguments_off = argv - ctx->stack;
hres = jsval_copy(argv[i], &v); i = argc;
if(SUCCEEDED(hres)) }else {
hres = stack_push(ctx, v); frame->arguments_off = ctx->stack_top;
if(FAILED(hres)) { for(i = 0; i < argc; i++) {
stack_popn(ctx, i); hres = jsval_copy(argv[i], &v);
return hres; if(SUCCEEDED(hres))
hres = stack_push(ctx, v);
if(FAILED(hres)) {
stack_popn(ctx, i);
return hres;
}
} }
} }
@ -2611,12 +2617,12 @@ static HRESULT setup_scope(script_ctx_t *ctx, call_frame_t *frame, unsigned argc
for(; i < frame->function->param_cnt; i++) { for(; i < frame->function->param_cnt; i++) {
hres = stack_push(ctx, jsval_undefined()); hres = stack_push(ctx, jsval_undefined());
if(FAILED(hres)) { if(FAILED(hres)) {
stack_popn(ctx, i); stack_popn(ctx, ctx->stack_top - orig_stack);
return hres; return hres;
} }
} }
frame->pop_locals = i; frame->pop_locals = ctx->stack_top - orig_stack;
frame->base_scope->frame = frame; frame->base_scope->frame = frame;
return S_OK; return S_OK;
} }