void FunctionManager::build_function_thread() { try { TRACE("JIT thread started"); boost::mutex::scoped_lock jit_thread_cv_mutex_lock( jit_thread_cv_mutex_); while (true) { while (!quit_ && !work_available_) { TRACE("JIT thread waiting to be signalled"); jit_thread_cv_.wait(jit_thread_cv_mutex_lock); } if (quit_) { TRACE("JIT thread quitting"); return; } else { TRACE("JIT thread about to build Function at address 0x" << std::hex << std::setfill('0') << std::setw(4) << jit_thread_address_); assert(work_available_); assert(!jit_thread_idle_); // Note that we translate code from memory_snapshot_ // not mpu_->memory. This is important, even though we // have update_memory_snapshot() which "should" invalidate // Function objects which depend on modified code before any // of them are used. The reason is that if a memory location // is temporarily modified by the interpreter before it can // be translated, then modified back to its original value // by the interpreter before update_memory_snapshot() is // called, update_memory_snapshot() can't notice the change, // but the change has been compiled into the Function object. // (See test/z-self-modify-2.xa; this breaks in hybrid mode // if memory_snapshot_ isn't used here.) build_function(jit_thread_address_, memory_snapshot_); work_available_ = false; boost::mutex::scoped_lock jit_thread_idle_lock( jit_thread_idle_mutex_); jit_thread_idle_ = true; } } } catch (std::exception &e) { die(e.what()); } }
/* parsing language hook */ static void slang_parse_file () { int i; for(i = 0; i<num_in_fnames; ++i) { parse_program(in_fnames[i]); } #if 0 tree char_p = build_pointer_type (char_type_node); tree puts_type = build_function_type_list (integer_type_node, char_p, NULL_TREE); tree puts_fndecl = build_function_decl ("puts", true, puts_type); tree main_type = build_function_type_list (integer_type_node, NULL_TREE); tree main_fndecl = build_function_decl ("main", false, main_type); const char *msg = "HelloWorld , ... This is pradeeps compiler"; tree hello_str = build_string_literal (strlen(msg) + 1, msg); tree call = build_call_expr (puts_fndecl,1, hello_str); tree block = make_node(BLOCK); tree c1 = build_pointer_type (char_type_node); tree stmts = NULL_TREE ;//alloc_stmt_list (); append_to_statement_list (call, &stmts); build_function (main_fndecl, stmts, block); FILE *fd = fopen("/home/pradeep/Desktop/dump.txt","w"); gimplify_function_tree (main_fndecl); dump_function_to_file (main_fndecl, fd, 0); fclose(fd); cgraph_finalize_function (main_fndecl, false); current_function_decl = NULL_TREE; pop_cfun(); #endif }
/* * Make the given NODE simple - i.e. return a temporary for complex subtrees * The appropriate code is also generated and pushed onto the code stack */ value *make_simple(environment *env, NODE *node, int flag, int return_type) { int i_value = 0; char *s_tmp = NULL; value *val1 = NULL, *val2 = NULL, *temporary = NULL, *temp = NULL; static int if_count = 0; static int while_count = 0; tac_quad *temp_quad = NULL; environment *new_env = NULL; if (node==NULL) return NULL; switch(type_of(node)) { case LEAF: return make_simple(env, node->left, flag, return_type); case CONSTANT: i_value = cast_from_node(node)->value; s_tmp = malloc(sizeof(char) * 25); sprintf(s_tmp, "%d", i_value); return int_value(i_value); case IDENTIFIER: return string_value(cast_from_node(node)->lexeme); case IF: build_if_stmt(env, node, ++if_count, NULL, NULL, flag, return_type); return NULL; case BREAK: s_tmp = malloc(sizeof(char) * 25); sprintf(s_tmp, "__while%dend", while_count); append_code(make_goto(s_tmp)); return NULL; case CONTINUE: s_tmp = malloc(sizeof(char) * 25); sprintf(s_tmp, "__while%d", while_count); append_code(make_goto(s_tmp)); return NULL; case WHILE: build_while_stmt(env, node, ++while_count, ++if_count, flag, return_type); return NULL; case '=': if (flag == INTERPRET_FN_SCAN) return NULL; val1 = make_simple(env, node->left, flag, return_type); val2 = make_simple(env, node->right, flag, return_type); if (val2 && val2->value_type!=VT_INTEGR && val2->value_type!=VT_FUNCTN) { if (val2->value_type == VT_STRING) { val2 = get(env, val2->data.string_value); } else { val2 = get(env, val2->identifier); } if (!val2) fatal("Undeclared identifier"); } /* Check the LHS variable has already been defined */ temp = get(env, to_string(val1)); assert(temp!=NULL, "Variable not defined"); /* Type check the assignment */ type_check_assignment(val1, val2, vt_type_convert(temp->value_type)); temporary = assign(env, val1, val2, 0); if (flag != INTERPRET_FN_SCAN) append_code(make_quad_value("=", val2, NULL, temporary, TT_ASSIGN, 0)); return NULL; case '*': case '/': case '>': case '<': case '%': case '-': case '+': case NE_OP: case LE_OP: case GE_OP: case EQ_OP: temporary = generate_temporary(env, int_value(0)); val1 = make_simple(env, node->left, flag, return_type); val2 = make_simple(env, node->right, flag, return_type); if (val1->value_type==VT_STRING) val1 = get(env, correct_string_rep(val1)); if (val2->value_type==VT_STRING) val2 = get(env, correct_string_rep(val2)); assert(val1 != NULL, "Operand value 1 must not be null"); assert(val2 != NULL, "Operand value 2 must not be null"); if (flag != INTERPRET_FN_SCAN) append_code(make_quad_value(type_to_string(type_of(node)), val1, val2, temporary, TT_OP, type_of(node))); return temporary; case '~': if (flag != INTERPRET_PARAMS && flag!=INTERPRET_FN_SCAN) { /* Params should not be registered, because at this point we're not in the correct environment */ register_variable_subtree_tac(env, node, VT_ANY); } val1 = make_simple(env, node->left, flag, return_type); val2 = make_simple(env, node->right, flag, return_type); if (flag == INTERPRET_PARAMS) { return int_param(to_string(val2), to_int(env, val1)); } return NULL; case 'D': /* val1 is FN definition */ /* val1 is executed in current environment */ val1 = make_simple(env, node->left, flag, return_type); /* New FN body environment */ new_env = create_environment(env); if (val1!=NULL) { /* Point function to the correct fn body */ val1->data.func->node_value = node->right; /* Store function definition in environment */ val2 = store_function(env, val1, new_env); } if (flag != INTERPRET_FN_SCAN) { /* Write out FN Name label */ append_code(make_begin_fn(val2)); append_code(make_fn_def(val2)); /* Make init frame */ temp_quad = make_init_frame(); append_code(temp_quad); /* Define parameters with default empty values */ register_params(new_env, val2->data.func->params); append_code(make_fn_body(val2)); /* Look inside fn body */ val2 = make_simple(new_env, node->right, EMBEDDED_FNS, val1->data.func->return_type); /* Update prepare frame with environment size */ temp_quad->operand1 = int_value(env_size(new_env)); /* Write end of function marker */ append_code(make_end_fn(val2)); } return NULL; case 'd': /* val1 is the type */ val1 = make_simple(env, node->left, flag, return_type); /* val2 is fn name & params */ val2 = make_simple(env, node->right, flag, return_type); /* Store return type */ val2->data.func->return_type = to_int(env, val1); return val2; case 'F': /* FN name in val1 */ val1 = make_simple(env, node->left, flag, return_type); /* Pull our parameters */ val2 = make_simple(env, node->right, INTERPRET_PARAMS, return_type); return build_function(env, val1, val2); case RETURN: val1 = make_simple(env, node->left, flag, return_type); /* Provide lookup for non-constants */ if (val1 && val1->value_type!=VT_INTEGR) { if (val1->value_type == VT_STRING) { val1 = get(env, val1->data.string_value); } else { val1 = get(env, val1->identifier); } if (!val1) fatal("Undeclared identifier"); } type_check_return(val1, return_type); append_code(make_return(val1)); return NULL; case ',': val1 = make_simple(env, node->left, flag, return_type); val2 = make_simple(env, node->right, flag, return_type); if (val1 && val2) { return join(val1, val2); } return NULL; case APPLY: /* FN Name */ val1 = make_simple(env, node->left, flag, return_type); /* Params */ val2 = make_simple(env, node->right, flag, return_type); /* Lookup function */ temp = search(env, to_string(val1), VT_FUNCTN, VT_ANY, 1); if (temp) { int fn_return_type; append_code(prepare_fn(val2)); append_code(push_params(env, val2)); /* If we can't typecheck, set a special UNDEFINED flag to say we can't */ /* typecheck. This can happen with function variables, we do not EASILY know the */ /* return type of the functions they are bound to until runtime. */ fn_return_type = UNDEFINED; if (temp->data.func) { fn_return_type = temp->data.func->return_type; } /* Temporary for result (if any) */ switch(fn_return_type) { case INT: temporary = generate_temporary(env, int_value(0)); break; case VOID: temporary = generate_temporary(env, NULL); break; case FUNCTION: temporary = generate_temporary(env, null_fn); break; default: temporary = generate_untypechecked_temporary(env); break; } append_code(make_fn_call(temporary, temp)); return temporary; } else { fatal("Cannot find function '%s'", to_string(val1)); } return NULL; case FUNCTION: case INT: case VOID: return int_value(type_of(node)); case ';': make_simple(env, node->left, flag, return_type); make_simple(env, node->right, flag, return_type); return NULL; default: fatal("Unrecognised node type"); return NULL; } }