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jerryscript/jerry-core/vm/pretty-printer.cpp
Hanjoung Lee 99ff8018bd Fix show-opcodes not showing last argument 
JerryScript-DCO-1.0-Signed-off-by: Hanjoung Lee hanjoung.lee@samsung.com
2015-08-17 12:10:55 +09:00

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/* Copyright 2014-2015 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef JERRY_ENABLE_PRETTY_PRINTER
#include <stdarg.h>
#include "pretty-printer.h"
#include "jrt-libc-includes.h"
#include "lexer.h"
#include "ecma-helpers.h"
#include "ecma-globals.h"
#include "serializer.h"
#include "lit-literal.h"
static const char* opcode_names[] =
{
#define VM_OP_0(opcode_name, opcode_name_uppercase) \
#opcode_name,
#define VM_OP_1(opcode_name, opcode_name_uppercase, arg1, arg1_type) \
#opcode_name,
#define VM_OP_2(opcode_name, opcode_name_uppercase, arg1, arg1_type, arg2, arg2_type) \
#opcode_name,
#define VM_OP_3(opcode_name, opcode_name_uppercase, arg1, arg1_type, arg2, arg2_type, arg3, arg3_type) \
#opcode_name,
#include "vm-opcodes.inc.h"
};
static uint8_t opcode_sizes[] =
{
#define VM_OP_0(opcode_name, opcode_name_uppercase) \
0,
#define VM_OP_1(opcode_name, opcode_name_uppercase, arg1, arg1_type) \
1,
#define VM_OP_2(opcode_name, opcode_name_uppercase, arg1, arg1_type, arg2, arg2_type) \
2,
#define VM_OP_3(opcode_name, opcode_name_uppercase, arg1, arg1_type, arg2, arg2_type, arg3, arg3_type) \
3,
#include "vm-opcodes.inc.h"
};
static char buff[ECMA_MAX_CHARS_IN_STRINGIFIED_NUMBER];
static void
clear_temp_buffer (void)
{
memset (buff, 0, ECMA_MAX_CHARS_IN_STRINGIFIED_NUMBER);
}
static const char *
lit_cp_to_str (lit_cpointer_t cp)
{
literal_t lit = lit_get_literal_by_cp (cp);
return lit_literal_to_str_internal_buf (lit);
}
static const char *
tmp_id_to_str (idx_t id)
{
JERRY_ASSERT (id != LITERAL_TO_REWRITE);
JERRY_ASSERT (id >= 128);
clear_temp_buffer ();
strncpy (buff, "tmp", 3);
if (id / 100 != 0)
{
buff[3] = (char) (id / 100 + '0');
buff[4] = (char) ((id % 100) / 10 + '0');
buff[5] = (char) (id % 10 + '0');
}
else if (id / 10 != 0)
{
buff[3] = (char) (id / 10 + '0');
buff[4] = (char) (id % 10 + '0');
}
else
{
buff[3] = (char) (id + '0');
}
return buff;
}
static const char *
var_to_str (vm_instr_t instr, lit_cpointer_t lit_ids[], vm_instr_counter_t oc, uint8_t current_arg)
{
raw_instr raw = *(raw_instr*) &instr;
if (raw.uids[current_arg] == LITERAL_TO_REWRITE)
{
if (lit_ids == NULL)
{
return "hz";
}
JERRY_ASSERT (lit_ids[current_arg - 1].packed_value != MEM_CP_NULL);
return lit_cp_to_str (lit_ids[current_arg - 1]);
}
else if (raw.uids[current_arg] >= 128)
{
return tmp_id_to_str (raw.uids[current_arg]);
}
else
{
return lit_cp_to_str (serializer_get_literal_cp_by_uid (raw.uids[current_arg], NULL, oc));
}
}
static void
pp_printf (const char *format, vm_instr_t instr, lit_cpointer_t lit_ids[], vm_instr_counter_t oc, uint8_t start_arg)
{
uint8_t current_arg = start_arg;
JERRY_ASSERT (current_arg <= 3);
while (*format)
{
if (*format != '%')
{
putchar (*format);
format++;
continue;
}
format++;
switch (*format)
{
case 'd':
{
JERRY_ASSERT (current_arg <= 3);
raw_instr raw = *(raw_instr*) &instr;
printf ("%d", raw.uids[current_arg]);
break;
}
case 's':
{
JERRY_ASSERT (current_arg <= 3);
printf ("%s", var_to_str (instr, lit_ids, oc, current_arg));
break;
}
default:
{
putchar ('%');
continue;
}
}
current_arg++;
format++;
}
}
#define PP_OP(op_name, format) \
case op_name: pp_printf (format, opm.op, opm.lit_id, oc, 1); break;
#define VAR(i) var_to_str (opm.op, opm.lit_id, oc, i)
#define OC(i, j) __extension__({ raw_instr* raw = (raw_instr *) &opm.op; \
vm_calc_instr_counter_from_idx_idx (raw->uids[i], raw->uids[j]); })
static int vargs_num = 0;
static int seen_vargs = 0;
static void
dump_asm (vm_instr_counter_t oc, vm_instr_t instr)
{
uint8_t i = 0;
uint8_t opcode_id = instr.op_idx;
printf ("%3d: %20s ", oc, opcode_names[opcode_id]);
for (i = 1; i <= opcode_sizes[opcode_id]; i++)
{
printf ("%4d ", ((raw_instr *) &instr)->uids[i]);
}
for (; i < 4; i++)
{
printf (" ");
}
}
void
pp_op_meta (const vm_instr_t *instrs_p,
vm_instr_counter_t oc,
op_meta opm,
bool rewrite)
{
dump_asm (oc, opm.op);
printf (" // ");
switch (opm.op.op_idx)
{
PP_OP (VM_OP_ADDITION, "%s = %s + %s;");
PP_OP (VM_OP_SUBSTRACTION, "%s = %s - %s;");
PP_OP (VM_OP_DIVISION, "%s = %s / %s;");
PP_OP (VM_OP_MULTIPLICATION, "%s = %s * %s;");
PP_OP (VM_OP_REMAINDER, "%s = %s %% %s;");
PP_OP (VM_OP_UNARY_MINUS, "%s = -%s;");
PP_OP (VM_OP_UNARY_PLUS, "%s = +%s;");
PP_OP (VM_OP_B_SHIFT_LEFT, "%s = %s << %s;");
PP_OP (VM_OP_B_SHIFT_RIGHT, "%s = %s >> %s;");
PP_OP (VM_OP_B_SHIFT_URIGHT, "%s = %s >>> %s;");
PP_OP (VM_OP_B_AND, "%s = %s & %s;");
PP_OP (VM_OP_B_OR, "%s = %s | %s;");
PP_OP (VM_OP_B_XOR, "%s = %s ^ %s;");
PP_OP (VM_OP_B_NOT, "%s = ~ %s;");
PP_OP (VM_OP_LOGICAL_NOT, "%s = ! %s;");
PP_OP (VM_OP_EQUAL_VALUE, "%s = %s == %s;");
PP_OP (VM_OP_NOT_EQUAL_VALUE, "%s = %s != %s;");
PP_OP (VM_OP_EQUAL_VALUE_TYPE, "%s = %s === %s;");
PP_OP (VM_OP_NOT_EQUAL_VALUE_TYPE, "%s = %s !== %s;");
PP_OP (VM_OP_LESS_THAN, "%s = %s < %s;");
PP_OP (VM_OP_GREATER_THAN, "%s = %s > %s;");
PP_OP (VM_OP_LESS_OR_EQUAL_THAN, "%s = %s <= %s;");
PP_OP (VM_OP_GREATER_OR_EQUAL_THAN, "%s = %s >= %s;");
PP_OP (VM_OP_INSTANCEOF, "%s = %s instanceof %s;");
PP_OP (VM_OP_IN, "%s = %s in %s;");
PP_OP (VM_OP_POST_INCR, "%s = %s++;");
PP_OP (VM_OP_POST_DECR, "%s = %s--;");
PP_OP (VM_OP_PRE_INCR, "%s = ++%s;");
PP_OP (VM_OP_PRE_DECR, "%s = --%s;");
PP_OP (VM_OP_THROW_VALUE, "throw %s;");
PP_OP (VM_OP_REG_VAR_DECL, "var %s .. %s;");
PP_OP (VM_OP_VAR_DECL, "var %s;");
PP_OP (VM_OP_RETVAL, "return %s;");
PP_OP (VM_OP_RET, "ret;");
PP_OP (VM_OP_PROP_GETTER, "%s = %s[%s];");
PP_OP (VM_OP_PROP_SETTER, "%s[%s] = %s;");
PP_OP (VM_OP_THIS_BINDING, "%s = this;");
PP_OP (VM_OP_DELETE_VAR, "%s = delete %s;");
PP_OP (VM_OP_DELETE_PROP, "%s = delete %s.%s;");
PP_OP (VM_OP_TYPEOF, "%s = typeof %s;");
PP_OP (VM_OP_WITH, "with (%s);");
PP_OP (VM_OP_FOR_IN, "for_in (%s);");
case VM_OP_IS_TRUE_JMP_UP: printf ("if (%s) goto %d;", VAR (1), oc - OC (2, 3)); break;
case VM_OP_IS_FALSE_JMP_UP: printf ("if (%s == false) goto %d;", VAR (1), oc - OC (2, 3)); break;
case VM_OP_IS_TRUE_JMP_DOWN: printf ("if (%s) goto %d;", VAR (1), oc + OC (2, 3)); break;
case VM_OP_IS_FALSE_JMP_DOWN: printf ("if (%s == false) goto %d;", VAR (1), oc + OC (2, 3)); break;
case VM_OP_JMP_UP: printf ("goto %d;", oc - OC (1, 2)); break;
case VM_OP_JMP_DOWN: printf ("goto %d;", oc + OC (1, 2)); break;
case VM_OP_JMP_BREAK_CONTINUE: printf ("goto_nested %d;", oc + OC (1, 2)); break;
case VM_OP_TRY_BLOCK: printf ("try (end: %d);", oc + OC (1, 2)); break;
case VM_OP_ASSIGNMENT:
{
printf ("%s = ", VAR (1));
switch (opm.op.data.assignment.type_value_right)
{
case OPCODE_ARG_TYPE_STRING: printf ("'%s': STRING;", VAR (3)); break;
case OPCODE_ARG_TYPE_NUMBER: printf ("%s: NUMBER;", VAR (3)); break;
case OPCODE_ARG_TYPE_NUMBER_NEGATE: printf ("-%s: NUMBER;", VAR (3)); break;
case OPCODE_ARG_TYPE_SMALLINT: printf ("%d: SMALLINT;", opm.op.data.assignment.value_right); break;
case OPCODE_ARG_TYPE_SMALLINT_NEGATE: printf ("-%d: SMALLINT;", opm.op.data.assignment.value_right); break;
case OPCODE_ARG_TYPE_VARIABLE: printf ("%s : TYPEOF(%s);", VAR (3), VAR (3)); break;
case OPCODE_ARG_TYPE_SIMPLE:
{
switch (opm.op.data.assignment.value_right)
{
case ECMA_SIMPLE_VALUE_NULL: printf ("null"); break;
case ECMA_SIMPLE_VALUE_FALSE: printf ("false"); break;
case ECMA_SIMPLE_VALUE_TRUE: printf ("true"); break;
case ECMA_SIMPLE_VALUE_UNDEFINED: printf ("undefined"); break;
default: JERRY_UNREACHABLE ();
}
printf (": SIMPLE;");
break;
}
}
break;
}
case VM_OP_CALL_N:
{
vargs_num = opm.op.data.call_n.arg_list;
seen_vargs = 0;
break;
}
case VM_OP_CONSTRUCT_N:
{
if (opm.op.data.construct_n.arg_list == 0)
{
pp_printf ("%s = new %s;", opm.op, opm.lit_id, oc, 1);
}
else
{
vargs_num = opm.op.data.construct_n.arg_list;
seen_vargs = 0;
}
break;
}
case VM_OP_FUNC_DECL_N:
{
if (opm.op.data.func_decl_n.arg_list == 0)
{
printf ("function %s ();", VAR (1));
}
else
{
vargs_num = opm.op.data.func_decl_n.arg_list;
seen_vargs = 0;
}
break;
}
case VM_OP_FUNC_EXPR_N:
{
if (opm.op.data.func_expr_n.arg_list == 0)
{
if (opm.op.data.func_expr_n.name_lit_idx == INVALID_VALUE)
{
printf ("%s = function ();", VAR (1));
}
else
{
pp_printf ("%s = function %s ();", opm.op, opm.lit_id, oc, 1);
}
}
else
{
vargs_num = opm.op.data.func_expr_n.arg_list;
seen_vargs = 0;
}
break;
}
case VM_OP_ARRAY_DECL:
{
if (opm.op.data.array_decl.list_1 == 0
&& opm.op.data.array_decl.list_2 == 0)
{
printf ("%s = [];", VAR (1));
}
else
{
vargs_num = (((int) opm.op.data.array_decl.list_1 << JERRY_BITSINBYTE)
+ (int) opm.op.data.array_decl.list_2);
seen_vargs = 0;
}
break;
}
case VM_OP_OBJ_DECL:
{
if (opm.op.data.obj_decl.list_1 == 0
&& opm.op.data.obj_decl.list_2 == 0)
{
printf ("%s = {};", VAR (1));
}
else
{
vargs_num = (((int) opm.op.data.obj_decl.list_1 << JERRY_BITSINBYTE)
+ (int) opm.op.data.obj_decl.list_2);
seen_vargs = 0;
}
break;
}
case VM_OP_META:
{
switch (opm.op.data.meta.type)
{
case OPCODE_META_TYPE_UNDEFINED:
{
printf ("unknown meta;");
break;
}
case OPCODE_META_TYPE_CALL_SITE_INFO:
case OPCODE_META_TYPE_VARG:
case OPCODE_META_TYPE_VARG_PROP_DATA:
case OPCODE_META_TYPE_VARG_PROP_GETTER:
case OPCODE_META_TYPE_VARG_PROP_SETTER:
{
if (opm.op.data.meta.type != OPCODE_META_TYPE_CALL_SITE_INFO)
{
seen_vargs++;
}
if (seen_vargs == vargs_num)
{
bool found = false;
vm_instr_counter_t start = oc;
while ((int16_t) start >= 0 && !found)
{
start--;
switch (serializer_get_instr (instrs_p, start).op_idx)
{
case VM_OP_CALL_N:
case VM_OP_CONSTRUCT_N:
case VM_OP_FUNC_DECL_N:
case VM_OP_FUNC_EXPR_N:
case VM_OP_ARRAY_DECL:
case VM_OP_OBJ_DECL:
{
found = true;
break;
}
}
}
vm_instr_t start_op = serializer_get_instr (instrs_p, start);
switch (start_op.op_idx)
{
case VM_OP_CALL_N:
{
pp_printf ("%s = %s (", start_op, NULL, start, 1);
break;
}
case VM_OP_CONSTRUCT_N:
{
pp_printf ("%s = new %s (", start_op, NULL, start, 1);
break;
}
case VM_OP_FUNC_DECL_N:
{
pp_printf ("function %s (", start_op, NULL, start, 1);
break;
}
case VM_OP_FUNC_EXPR_N:
{
if (start_op.data.func_expr_n.name_lit_idx == INVALID_VALUE)
{
pp_printf ("%s = function (", start_op, NULL, start, 1);
}
else
{
pp_printf ("%s = function %s (", start_op, NULL, start, 1);
}
break;
}
case VM_OP_ARRAY_DECL:
{
pp_printf ("%s = [", start_op, NULL, start, 1);
break;
}
case VM_OP_OBJ_DECL:
{
pp_printf ("%s = {", start_op, NULL, start, 1);
break;
}
default:
{
JERRY_UNREACHABLE ();
}
}
for (vm_instr_counter_t counter = start; counter <= oc; counter++)
{
vm_instr_t meta_op = serializer_get_instr (instrs_p, counter);
switch (meta_op.op_idx)
{
case VM_OP_META:
{
switch (meta_op.data.meta.type)
{
case OPCODE_META_TYPE_CALL_SITE_INFO:
{
opcode_call_flags_t call_flags = (opcode_call_flags_t) meta_op.data.meta.data_1;
if (call_flags & OPCODE_CALL_FLAGS_HAVE_THIS_ARG)
{
pp_printf ("this_arg = %s", meta_op, NULL, counter, 3);
}
if (call_flags & OPCODE_CALL_FLAGS_DIRECT_CALL_TO_EVAL_FORM)
{
printf ("['direct call to eval' form]");
}
break;
}
case OPCODE_META_TYPE_VARG:
{
pp_printf ("%s", meta_op, NULL, counter, 2);
break;
}
case OPCODE_META_TYPE_VARG_PROP_DATA:
{
pp_printf ("%s:%s", meta_op, NULL, counter, 2);
break;
}
case OPCODE_META_TYPE_VARG_PROP_GETTER:
{
pp_printf ("%s = get %s ();", meta_op, NULL, counter, 2);
break;
}
case OPCODE_META_TYPE_VARG_PROP_SETTER:
{
pp_printf ("%s = set (%s);", meta_op, NULL, counter, 2);
break;
}
default:
{
continue;
}
}
if (counter != oc)
{
printf (", ");
}
break;
}
}
}
switch (start_op.op_idx)
{
case VM_OP_ARRAY_DECL:
{
printf ("];");
break;
}
case VM_OP_OBJ_DECL:
{
printf ("};");
break;
}
default:
{
printf (");");
}
}
}
break;
}
case OPCODE_META_TYPE_END_WITH:
{
printf ("end with;");
break;
}
case OPCODE_META_TYPE_END_FOR_IN:
{
printf ("end for-in;");
break;
}
case OPCODE_META_TYPE_FUNCTION_END:
{
printf ("function end: %d;", oc + OC (2, 3));
break;
}
case OPCODE_META_TYPE_CATCH:
{
printf ("catch end: %d;", oc + OC (2, 3));
break;
}
case OPCODE_META_TYPE_CATCH_EXCEPTION_IDENTIFIER:
{
printf ("catch (%s);", VAR (2));
break;
}
case OPCODE_META_TYPE_FINALLY:
{
printf ("finally end: %d;", oc + OC (2, 3));
break;
}
case OPCODE_META_TYPE_END_TRY_CATCH_FINALLY:
{
printf ("end try");
break;
}
case OPCODE_META_TYPE_SCOPE_CODE_FLAGS:
{
if (opm.op.data.meta.data_1 != INVALID_VALUE)
{
idx_t scope_flags = opm.op.data.meta.data_1;
if (scope_flags & OPCODE_SCOPE_CODE_FLAGS_STRICT)
{
printf ("[use strict] ");
scope_flags &= (idx_t) ~(OPCODE_SCOPE_CODE_FLAGS_STRICT);
}
if (scope_flags & OPCODE_SCOPE_CODE_FLAGS_NOT_REF_ARGUMENTS_IDENTIFIER)
{
printf ("[no 'arguments'] ");
scope_flags &= (idx_t) ~(OPCODE_SCOPE_CODE_FLAGS_NOT_REF_ARGUMENTS_IDENTIFIER);
}
if (scope_flags & OPCODE_SCOPE_CODE_FLAGS_NOT_REF_EVAL_IDENTIFIER)
{
printf ("[no 'eval'] ");
scope_flags &= (idx_t) ~(OPCODE_SCOPE_CODE_FLAGS_NOT_REF_EVAL_IDENTIFIER);
}
JERRY_ASSERT (scope_flags == 0);
}
else
{
printf ("[to be rewritten]");
}
break;
}
default:
{
JERRY_UNREACHABLE ();
}
}
break;
}
default:
{
JERRY_UNREACHABLE ();
}
}
if (rewrite)
{
printf (" // REWRITE");
}
printf ("\n");
}
#endif /* JERRY_ENABLE_PRETTY_PRINTER */
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