/**
* Run the code, starting from specified instruction position
*/
ecma_completion_value_t
vm_run_from_pos (const vm_instr_t *instrs_p, /**< byte-code array */
vm_instr_counter_t start_pos, /**< position of starting instruction */
ecma_value_t this_binding_value, /**< value of 'ThisBinding' */
ecma_object_t *lex_env_p, /**< lexical environment to use */
bool is_strict, /**< is the code is strict mode code (ECMA-262 v5, 10.1.1) */
bool is_eval_code) /**< is the code is eval code (ECMA-262 v5, 10.1) */
{
ecma_completion_value_t completion;
const vm_instr_t *curr = &instrs_p[start_pos];
JERRY_ASSERT (curr->op_idx == VM_OP_REG_VAR_DECL);
const idx_t min_reg_num = curr->data.reg_var_decl.min;
const idx_t max_reg_num = curr->data.reg_var_decl.max;
JERRY_ASSERT (max_reg_num >= min_reg_num);
const int32_t regs_num = max_reg_num - min_reg_num + 1;
MEM_DEFINE_LOCAL_ARRAY (regs, regs_num, ecma_value_t);
vm_frame_ctx_t frame_ctx;
frame_ctx.instrs_p = instrs_p;
frame_ctx.pos = (vm_instr_counter_t) (start_pos + 1);
frame_ctx.this_binding = this_binding_value;
frame_ctx.lex_env_p = lex_env_p;
frame_ctx.is_strict = is_strict;
frame_ctx.is_eval_code = is_eval_code;
frame_ctx.is_call_in_direct_eval_form = false;
frame_ctx.min_reg_num = min_reg_num;
frame_ctx.max_reg_num = max_reg_num;
frame_ctx.tmp_num_p = ecma_alloc_number ();
vm_stack_add_frame (&frame_ctx.stack_frame, regs, regs_num);
vm_frame_ctx_t *prev_context_p = vm_top_context_p;
vm_top_context_p = &frame_ctx;
#ifdef MEM_STATS
interp_mem_stats_context_enter (&frame_ctx, start_pos);
#endif /* MEM_STATS */
completion = vm_loop (&frame_ctx, NULL);
JERRY_ASSERT (ecma_is_completion_value_throw (completion)
|| ecma_is_completion_value_return (completion));
vm_top_context_p = prev_context_p;
vm_stack_free_frame (&frame_ctx.stack_frame);
ecma_dealloc_number (frame_ctx.tmp_num_p);
#ifdef MEM_STATS
interp_mem_stats_context_exit (&frame_ctx, start_pos);
#endif /* MEM_STATS */
MEM_FINALIZE_LOCAL_ARRAY (regs);
return completion;
} /* vm_run_from_pos */
/**
* Run the code, starting from specified instruction position
*/
ecma_completion_value_t
vm_run_from_pos (const bytecode_data_header_t *header_p, /**< byte-code data header */
vm_instr_counter_t start_pos, /**< position of starting instruction */
ecma_value_t this_binding_value, /**< value of 'ThisBinding' */
ecma_object_t *lex_env_p, /**< lexical environment to use */
bool is_strict, /**< is the code is strict mode code (ECMA-262 v5, 10.1.1) */
bool is_eval_code, /**< is the code is eval code (ECMA-262 v5, 10.1) */
ecma_collection_header_t *arg_collection_p) /**<
* - collection of function call arguments,
* if arguments for the called function
* are placed on registers;
* - NULL - otherwise.
*/
{
ecma_completion_value_t completion;
const vm_instr_t *instrs_p = header_p->instrs_p;
const vm_instr_t *curr = &instrs_p[start_pos];
JERRY_ASSERT (curr->op_idx == VM_OP_REG_VAR_DECL);
const uint32_t tmp_regs_num = curr->data.reg_var_decl.tmp_regs_num;
const uint32_t local_var_regs_num = curr->data.reg_var_decl.local_var_regs_num;
const uint32_t arg_regs_num = curr->data.reg_var_decl.arg_regs_num;
uint32_t regs_num = VM_SPECIAL_REGS_NUMBER + tmp_regs_num + local_var_regs_num + arg_regs_num;
MEM_DEFINE_LOCAL_ARRAY (regs, regs_num, ecma_value_t);
vm_frame_ctx_t frame_ctx;
frame_ctx.bytecode_header_p = header_p;
frame_ctx.pos = (vm_instr_counter_t) (start_pos + 1);
frame_ctx.lex_env_p = lex_env_p;
frame_ctx.is_strict = is_strict;
frame_ctx.is_eval_code = is_eval_code;
frame_ctx.is_call_in_direct_eval_form = false;
frame_ctx.tmp_num_p = ecma_alloc_number ();
vm_stack_add_frame (&frame_ctx.stack_frame, regs, regs_num, local_var_regs_num, arg_regs_num, arg_collection_p);
vm_stack_frame_set_reg_value (&frame_ctx.stack_frame,
VM_REG_SPECIAL_THIS_BINDING,
ecma_copy_value (this_binding_value, false));
vm_frame_ctx_t *prev_context_p = vm_top_context_p;
vm_top_context_p = &frame_ctx;
#ifdef MEM_STATS
interp_mem_stats_context_enter (&frame_ctx, start_pos);
#endif /* MEM_STATS */
completion = vm_loop (&frame_ctx, NULL);
JERRY_ASSERT (ecma_is_completion_value_throw (completion)
|| ecma_is_completion_value_return (completion));
vm_top_context_p = prev_context_p;
vm_stack_free_frame (&frame_ctx.stack_frame);
ecma_dealloc_number (frame_ctx.tmp_num_p);
#ifdef MEM_STATS
interp_mem_stats_context_exit (&frame_ctx, start_pos);
#endif /* MEM_STATS */
MEM_FINALIZE_LOCAL_ARRAY (regs);
return completion;
} /* vm_run_from_pos */
