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Implement realm object and support realms for built-ins and JS functions (#4354)

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- Type for realm objects is introduced (ecma_global_object_t)
- Realm reference is added to built-in objects and ECMAScript functions
- Resolving built-ins, global environments, and scopes require realm object
- Unnecessary global object accesses are removed from the code

Missing: external functions and static snapshot functions have no realm reference

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2020-12-08 14:36:36 +01:00
committed by GitHub
parent 7cb9f808f7
commit df92c86ecf
32 changed files with 1128 additions and 188 deletions
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jerry-core/api/jerry-snapshot.c
+30 -2
View File
@@ -49,6 +49,9 @@ snapshot_get_global_flags (bool has_regex, /**< regex literal is present */
#if ENABLED (JERRY_ESNEXT)
flags |= (has_class ? JERRY_SNAPSHOT_HAS_CLASS_LITERAL : 0);
#endif /* ENABLED (JERRY_ESNEXT) */
#if ENABLED (JERRY_BUILTIN_REALMS)
flags |= JERRY_SNAPSHOT_HAS_REALM_VALUE;
#endif /* ENABLED (JERRY_BUILTIN_REALMS) */
return flags;
} /* snapshot_get_global_flags */
@@ -67,6 +70,9 @@ snapshot_check_global_flags (uint32_t global_flags) /**< global flags */
#if ENABLED (JERRY_ESNEXT)
global_flags &= (uint32_t) ~JERRY_SNAPSHOT_HAS_CLASS_LITERAL;
#endif /* ENABLED (JERRY_ESNEXT) */
#if ENABLED (JERRY_BUILTIN_REALMS)
global_flags |= JERRY_SNAPSHOT_HAS_REALM_VALUE;
#endif /* ENABLED (JERRY_BUILTIN_REALMS) */
return global_flags == snapshot_get_global_flags (false, false);
} /* snapshot_check_global_flags */
@@ -380,6 +386,10 @@ static_snapshot_add_compiled_code (ecma_compiled_code_t *compiled_code_p, /**< c
cbc_uint16_arguments_t *args_p = (cbc_uint16_arguments_t *) buffer_p;
literal_end = (uint32_t) (args_p->literal_end - args_p->register_end);
const_literal_end = (uint32_t) (args_p->const_literal_end - args_p->register_end);
#if ENABLED (JERRY_BUILTIN_REALMS)
args_p->realm_value = ECMA_VALUE_UNDEFINED;
#endif /* ENABLED (JERRY_BUILTIN_REALMS) */
}
else
{
@@ -388,6 +398,10 @@ static_snapshot_add_compiled_code (ecma_compiled_code_t *compiled_code_p, /**< c
cbc_uint8_arguments_t *args_p = (cbc_uint8_arguments_t *) buffer_p;
literal_end = (uint32_t) (args_p->literal_end - args_p->register_end);
const_literal_end = (uint32_t) (args_p->const_literal_end - args_p->register_end);
#if ENABLED (JERRY_BUILTIN_REALMS)
args_p->realm_value = ECMA_VALUE_UNDEFINED;
#endif /* ENABLED (JERRY_BUILTIN_REALMS) */
}
for (uint32_t i = 0; i < const_literal_end; i++)
@@ -585,6 +599,10 @@ snapshot_load_compiled_code (const uint8_t *base_addr_p, /**< base address of th
const_literal_end = (uint32_t) (args_p->const_literal_end - args_p->register_end);
literal_end = (uint32_t) (args_p->literal_end - args_p->register_end);
header_size = sizeof (cbc_uint16_arguments_t);
#if ENABLED (JERRY_BUILTIN_REALMS)
args_p->realm_value = ecma_make_object_value (ecma_builtin_get_global ());
#endif /* ENABLED (JERRY_BUILTIN_REALMS) */
}
else
{
@@ -595,6 +613,10 @@ snapshot_load_compiled_code (const uint8_t *base_addr_p, /**< base address of th
const_literal_end = (uint32_t) (args_p->const_literal_end - args_p->register_end);
literal_end = (uint32_t) (args_p->literal_end - args_p->register_end);
header_size = sizeof (cbc_uint8_arguments_t);
#if ENABLED (JERRY_BUILTIN_REALMS)
args_p->realm_value = ecma_make_object_value (ecma_builtin_get_global ());
#endif /* ENABLED (JERRY_BUILTIN_REALMS) */
}
if (copy_bytecode
@@ -1003,14 +1025,20 @@ jerry_snapshot_result (const uint32_t *snapshot_p, /**< snapshot */
if (as_function)
{
ecma_object_t *global_object_p = ecma_builtin_get_global ();
#if ENABLED (JERRY_BUILTIN_REALMS)
JERRY_ASSERT (global_object_p == ecma_get_object_from_value (ecma_op_function_get_realm (bytecode_p)));
#endif /* ENABLED (JERRY_BUILTIN_REALMS) */
#if ENABLED (JERRY_ESNEXT)
if (bytecode_p->status_flags & CBC_CODE_FLAGS_LEXICAL_BLOCK_NEEDED)
{
ecma_create_global_lexical_block ();
ecma_create_global_lexical_block (global_object_p);
}
#endif /* ENABLED (JERRY_ESNEXT) */
ecma_object_t *lex_env_p = ecma_get_global_scope ();
ecma_object_t *lex_env_p = ecma_get_global_scope (global_object_p);
ecma_object_t *func_obj_p = ecma_op_create_simple_function_object (lex_env_p, bytecode_p);
if (!(bytecode_p->status_flags & CBC_CODE_FLAGS_STATIC_FUNCTION))