Péter Gál
d5a7839632
In some parts of Proxy internal methods the compiler can do a bit of tail call optimalization which would be ok, but the current stack limit check framework in Jerry uses the stack pointer to calculate the stack depth. This way of stack depth calculation is affected by the tail call optimalization (as the stack does not increase). By disabling the tail call optimalization at given points the stack limit calculation will work as expected. This causes a bit of stack overhead, but the Proxy in it self is a fairly big chunk of code and this stack limit would only be relevant if the Proxy already does recusion which already very edge case. The stack limit (--stack-limit=..) should be enabled to correctly report such stack depth errors. JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.usz@partner.samsung.com
190 lines
6.5 KiB
C
190 lines
6.5 KiB
C
/* Copyright JS Foundation and other contributors, http://js.foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef JRT_H
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#define JRT_H
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#include <stdio.h>
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#include <string.h>
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#include "config.h"
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#include "jerryscript-port.h"
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#include "jrt-types.h"
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/*
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* Constants
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*/
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#define JERRY_BITSINBYTE 8
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/*
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* Make sure unused parameters, variables, or expressions trigger no compiler warning.
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*/
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#define JERRY_UNUSED(x) ((void) (x))
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#define JERRY_UNUSED_1(_1) JERRY_UNUSED (_1)
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#define JERRY_UNUSED_2(_1, _2) JERRY_UNUSED (_1), JERRY_UNUSED_1 (_2)
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#define JERRY_UNUSED_3(_1, _2, _3) JERRY_UNUSED (_1), JERRY_UNUSED_2 (_2, _3)
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#define JERRY_UNUSED_4(_1, _2, _3, _4) JERRY_UNUSED (_1), JERRY_UNUSED_3 (_2, _3, _4)
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#define JERRY_UNUSED_5(_1, _2, _3, _4, _5) JERRY_UNUSED (_1), JERRY_UNUSED_4 (_2, _3, _4, _5)
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#define JERRY_UNUSED_6(_1, _2, _3, _4, _5, _6) JERRY_UNUSED (_1), JERRY_UNUSED_5 (_2, _3, _4, _5, _6)
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#define JERRY_UNUSED_7(_1, _2, _3, _4, _5, _6, _7) JERRY_UNUSED (_1), JERRY_UNUSED_6 (_2, _3, _4, _5, _6, _7)
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#define JERRY_UNUSED_8(_1, _2, _3, _4, _5, _6, _7, _8) JERRY_UNUSED (_1), JERRY_UNUSED_7 (_2, _3, _4, _5, _6, _7, _8)
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#define JERRY_VA_ARGS_NUM_IMPL(_1, _2, _3, _4, _5, _6, _7, _8, N, ...) N
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#define JERRY_VA_ARGS_NUM(...) JERRY_VA_ARGS_NUM_IMPL (__VA_ARGS__, 8, 7, 6, 5, 4, 3, 2, 1, 0)
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#define JERRY_UNUSED_ALL_IMPL_(nargs) JERRY_UNUSED_ ## nargs
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#define JERRY_UNUSED_ALL_IMPL(nargs) JERRY_UNUSED_ALL_IMPL_ (nargs)
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#define JERRY_UNUSED_ALL(...) JERRY_UNUSED_ALL_IMPL (JERRY_VA_ARGS_NUM (__VA_ARGS__)) (__VA_ARGS__)
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/*
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* Asserts
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*
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* Warning:
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* Don't use JERRY_STATIC_ASSERT in headers, because
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* __LINE__ may be the same for asserts in a header
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* and in an implementation file.
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*/
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#define JERRY_STATIC_ASSERT_GLUE_(a, b, c) a ## b ## _ ## c
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#define JERRY_STATIC_ASSERT_GLUE(a, b, c) JERRY_STATIC_ASSERT_GLUE_ (a, b, c)
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#define JERRY_STATIC_ASSERT(x, msg) \
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enum { JERRY_STATIC_ASSERT_GLUE (static_assertion_failed_, __LINE__, msg) = 1 / (!!(x)) }
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#ifndef JERRY_NDEBUG
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void JERRY_ATTR_NORETURN
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jerry_assert_fail (const char *assertion, const char *file, const char *function, const uint32_t line);
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void JERRY_ATTR_NORETURN
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jerry_unreachable (const char *file, const char *function, const uint32_t line);
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#define JERRY_ASSERT(x) \
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do \
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{ \
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if (JERRY_UNLIKELY (!(x))) \
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{ \
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jerry_assert_fail (#x, __FILE__, __func__, __LINE__); \
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} \
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} while (0)
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#define JERRY_UNREACHABLE() \
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do \
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{ \
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jerry_unreachable (__FILE__, __func__, __LINE__); \
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} while (0)
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#else /* JERRY_NDEBUG */
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#define JERRY_ASSERT(x) \
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do \
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{ \
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if (false) \
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{ \
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JERRY_UNUSED (x); \
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} \
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} while (0)
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#ifdef __GNUC__
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#define JERRY_UNREACHABLE() __builtin_unreachable ()
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#endif /* __GNUC__ */
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#ifdef _MSC_VER
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#define JERRY_UNREACHABLE() _assume (0)
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#endif /* _MSC_VER */
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#ifndef JERRY_UNREACHABLE
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#define JERRY_UNREACHABLE()
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#endif /* !JERRY_UNREACHABLE */
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#endif /* !JERRY_NDEBUG */
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/**
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* Exit on fatal error
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*/
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void JERRY_ATTR_NORETURN jerry_fatal (jerry_fatal_code_t code);
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/*
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* Logging
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*/
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#if JERRY_LOGGING
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#define JERRY_ERROR_MSG(...) jerry_port_log (JERRY_LOG_LEVEL_ERROR, __VA_ARGS__)
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#define JERRY_WARNING_MSG(...) jerry_port_log (JERRY_LOG_LEVEL_WARNING, __VA_ARGS__)
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#define JERRY_DEBUG_MSG(...) jerry_port_log (JERRY_LOG_LEVEL_DEBUG, __VA_ARGS__)
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#define JERRY_TRACE_MSG(...) jerry_port_log (JERRY_LOG_LEVEL_TRACE, __VA_ARGS__)
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#else /* !JERRY_LOGGING */
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#define JERRY_ERROR_MSG(...) do { if (false) { JERRY_UNUSED_ALL (__VA_ARGS__); } } while (0)
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#define JERRY_WARNING_MSG(...) do { if (false) { JERRY_UNUSED_ALL (__VA_ARGS__); } } while (0)
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#define JERRY_DEBUG_MSG(...) do { if (false) { JERRY_UNUSED_ALL (__VA_ARGS__); } } while (0)
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#define JERRY_TRACE_MSG(...) do { if (false) { JERRY_UNUSED_ALL (__VA_ARGS__); } } while (0)
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#endif /* JERRY_LOGGING */
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/**
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* Size of struct member
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*/
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#define JERRY_SIZE_OF_STRUCT_MEMBER(struct_name, member_name) sizeof (((struct_name *) NULL)->member_name)
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/**
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* Aligns @a value to @a alignment. @a must be the power of 2.
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*
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* Returns minimum positive value, that divides @a alignment and is more than or equal to @a value
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*/
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#define JERRY_ALIGNUP(value, alignment) (((value) + ((alignment) - 1)) & ~((alignment) - 1))
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/*
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* min, max
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*/
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#define JERRY_MIN(v1, v2) (((v1) < (v2)) ? (v1) : (v2))
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#define JERRY_MAX(v1, v2) (((v1) < (v2)) ? (v2) : (v1))
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/**
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* Calculate the index of the first non-zero bit of a 32 bit integer value
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*/
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#define JERRY__LOG2_1(n) (((n) >= 2) ? 1 : 0)
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#define JERRY__LOG2_2(n) (((n) >= 1 << 2) ? (2 + JERRY__LOG2_1 ((n) >> 2)) : JERRY__LOG2_1 (n))
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#define JERRY__LOG2_4(n) (((n) >= 1 << 4) ? (4 + JERRY__LOG2_2 ((n) >> 4)) : JERRY__LOG2_2 (n))
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#define JERRY__LOG2_8(n) (((n) >= 1 << 8) ? (8 + JERRY__LOG2_4 ((n) >> 8)) : JERRY__LOG2_4 (n))
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#define JERRY_LOG2(n) (((n) >= 1 << 16) ? (16 + JERRY__LOG2_8 ((n) >> 16)) : JERRY__LOG2_8 (n))
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/**
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* JERRY_BLOCK_TAIL_CALL_OPTIMIZATION
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*
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* Adapted from abseil ( https://github.com/abseil/ )
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*
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* Instructs the compiler to avoid optimizing tail-call recursion. This macro is
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* useful when you wish to preserve the existing function order within a stack
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* trace for logging, debugging, or profiling purposes.
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*
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* Example:
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*
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* int f() {
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* int result = g();
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* JERRY_BLOCK_TAIL_CALL_OPTIMIZATION();
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* return result;
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* }
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*
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* This macro is intentionally here as jerryscript-compiler.h is a public header and
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* it does not make sense to expose this macro to the public.
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*/
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#if defined (__clang__) || defined (__GNUC__)
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/* Clang/GCC will not tail call given inline volatile assembly. */
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#define JERRY_BLOCK_TAIL_CALL_OPTIMIZATION() __asm__ __volatile__ ("")
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#else /* !defined(__clang__) && !defined(__GNUC__) */
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/* On GCC 10.x this version also works. */
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#define JERRY_BLOCK_TAIL_CALL_OPTIMIZATION() \
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do \
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{ \
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JERRY_CONTEXT (status_flags) |= ECMA_STATUS_API_AVAILABLE; \
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} \
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while (0)
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#endif /* defined(__clang__) || defined (__GNUC__) */
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#endif /* !JRT_H */
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