---

zend_multiply.h

/* +----------------------------------------------------------------------+ | Zend Engine | +----------------------------------------------------------------------+ | Copyright (c) Zend Technologies Ltd. (http://www.zend.com) | +----------------------------------------------------------------------+ | This source file is subject to version 2.00 of the Zend license, | | that is bundled with this package in the file LICENSE, and is | | available through the world-wide-web at the following url: | | http://www.zend.com/license/2_00.txt. | | If you did not receive a copy of the Zend license and are unable to | | obtain it through the world-wide-web, please send a note to | | license@zend.com so we can mail you a copy immediately. | +----------------------------------------------------------------------+ | Authors: Sascha Schumann <sascha@schumann.cx> | | Ard Biesheuvel <ard.biesheuvel@linaro.org> | +----------------------------------------------------------------------+ */ #include "zend_portability.h" #ifndef ZEND_MULTIPLY_H #define ZEND_MULTIPLY_H #if defined(PHP_HAVE_BUILTIN_SMULL_OVERFLOW) && SIZEOF_LONG == SIZEOF_ZEND_LONG #define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do { \ long __tmpvar; \ if (((usedval) = __builtin_smull_overflow((a), (b), &__tmpvar))) { \ (dval) = (double) (a) * (double) (b); \ } \ else (lval) = __tmpvar; \ } while (0) #elif defined(PHP_HAVE_BUILTIN_SMULLL_OVERFLOW) && SIZEOF_LONG_LONG == SIZEOF_ZEND_LONG #define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do { \ long long __tmpvar; \ if (((usedval) = __builtin_smulll_overflow((a), (b), &__tmpvar))) { \ (dval) = (double) (a) * (double) (b); \ } \ else (lval) = __tmpvar; \ } while (0) #elif (defined(__i386__) || defined(__x86_64__)) && defined(__GNUC__) #define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do { \ zend_long __tmpvar; \ __asm__ ("imul %3,%0\n" \ "adc $0,%1" \ : "=r"(__tmpvar),"=r"(usedval) \ : "0"(a), "r"(b), "1"(0)); \ if (usedval) (dval) = (double) (a) * (double) (b); \ else (lval) = __tmpvar; \ } while (0) #elif defined(__arm__) && defined(__GNUC__) #define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do { \ zend_long __tmpvar; \ __asm__("smull %0, %1, %2, %3\n" \ "sub %1, %1, %0, asr #31" \ : "=r"(__tmpvar), "=r"(usedval) \ : "r"(a), "r"(b)); \ if (usedval) (dval) = (double) (a) * (double) (b); \ else (lval) = __tmpvar; \ } while (0) #elif defined(__aarch64__) && defined(__GNUC__) #define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do { \ zend_long __tmpvar; \ __asm__("mul %0, %2, %3\n" \ "smulh %1, %2, %3\n" \ "sub %1, %1, %0, asr #63\n" \ : "=&r"(__tmpvar), "=&r"(usedval) \ : "r"(a), "r"(b)); \ if (usedval) (dval) = (double) (a) * (double) (b); \ else (lval) = __tmpvar; \ } while (0) #elif defined(ZEND_WIN32) # ifdef _M_X64 # pragma intrinsic(_mul128) # define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do { \ __int64 __high; \ __int64 __low = _mul128((a), (b), &__high); \ if ((__low >> 63I64) == __high) { \ (usedval) = 0; \ (lval) = __low; \ } else { \ (usedval) = 1; \ (dval) = (double)(a) * (double)(b); \ } \ } while (0) # elif defined(_M_ARM64) # pragma intrinsic(__mulh) # define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do { \ __int64 __high = __mulh((a), (b)); \ __int64 __low = (a) * (b); \ if ((__low >> 63I64) == __high) { \ (usedval) = 0; \ (lval) = __low; \ } else { \ (usedval) = 1; \ (dval) = (double)(a) * (double)(b); \ } \ } while (0) # else # define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do { \ zend_long __lres = (a) * (b); \ long double __dres = (long double)(a) * (long double)(b); \ long double __delta = (long double) __lres - __dres; \ if ( ((usedval) = (( __dres + __delta ) != __dres))) { \ (dval) = __dres; \ } else { \ (lval) = __lres; \ } \ } while (0) # endif #elif defined(__powerpc64__) && defined(__GNUC__) #define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do { \ long __low, __high; \ __asm__("mulld %0,%2,%3\n\t" \ "mulhd %1,%2,%3\n" \ : "=&r"(__low), "=&r"(__high) \ : "r"(a), "r"(b)); \ if ((__low >> 63) != __high) { \ (dval) = (double) (a) * (double) (b); \ (usedval) = 1; \ } else { \ (lval) = __low; \ (usedval) = 0; \ } \ } while (0) #elif SIZEOF_ZEND_LONG == 4 #define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do { \ int64_t __result = (int64_t) (a) * (int64_t) (b); \ if (__result > ZEND_LONG_MAX || __result < ZEND_LONG_MIN) { \ (dval) = (double) __result; \ (usedval) = 1; \ } else { \ (lval) = (long) __result; \ (usedval) = 0; \ } \ } while (0) #else #define ZEND_SIGNED_MULTIPLY_LONG(a, b, lval, dval, usedval) do { \ long __lres = (a) * (b); \ long double __dres = (long double)(a) * (long double)(b); \ long double __delta = (long double) __lres - __dres; \ if ( ((usedval) = (( __dres + __delta ) != __dres))) { \ (dval) = __dres; \ } else { \ (lval) = __lres; \ } \ } while (0) #endif #if defined(__GNUC__) && (defined(__native_client__) || defined(i386)) static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, size_t offset, bool *overflow) { size_t res = nmemb; size_t m_overflow = 0; if (ZEND_CONST_COND(offset == 0, 0)) { __asm__ ("mull %3\n\tadcl $0,%1" : "=&a"(res), "=&d" (m_overflow) : "%0"(res), "rm"(size) : "cc"); } else { __asm__ ("mull %3\n\taddl %4,%0\n\tadcl $0,%1" : "=&a"(res), "=&d" (m_overflow) : "%0"(res), "rm"(size), "rm"(offset) : "cc"); } if (UNEXPECTED(m_overflow)) { *overflow = 1; return 0; } *overflow = 0; return res; } #elif defined(__GNUC__) && defined(__x86_64__) static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, size_t offset, bool *overflow) { size_t res = nmemb; zend_ulong m_overflow = 0; #ifdef __ILP32__ /* x32 */ # define LP_SUFF "l" #else /* amd64 */ # define LP_SUFF "q" #endif if (ZEND_CONST_COND(offset == 0, 0)) { __asm__ ("mul" LP_SUFF " %3\n\t" "adc $0,%1" : "=&a"(res), "=&d" (m_overflow) : "%0"(res), "rm"(size) : "cc"); } else { __asm__ ("mul" LP_SUFF " %3\n\t" "add %4,%0\n\t" "adc $0,%1" : "=&a"(res), "=&d" (m_overflow) : "%0"(res), "rm"(size), "rm"(offset) : "cc"); } #undef LP_SUFF if (UNEXPECTED(m_overflow)) { *overflow = 1; return 0; } *overflow = 0; return res; } #elif defined(__GNUC__) && defined(__arm__) static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, size_t offset, bool *overflow) { size_t res; zend_ulong m_overflow; __asm__ ("umlal %0,%1,%2,%3" : "=r"(res), "=r"(m_overflow) : "r"(nmemb), "r"(size), "0"(offset), "1"(0)); if (UNEXPECTED(m_overflow)) { *overflow = 1; return 0; } *overflow = 0; return res; } #elif defined(__GNUC__) && defined(__aarch64__) static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, size_t offset, bool *overflow) { size_t res; zend_ulong m_overflow; __asm__ ("mul %0,%2,%3\n\tumulh %1,%2,%3\n\tadds %0,%0,%4\n\tadc %1,%1,xzr" : "=&r"(res), "=&r"(m_overflow) : "r"(nmemb), "r"(size), "r"(offset) : "cc"); if (UNEXPECTED(m_overflow)) { *overflow = 1; return 0; } *overflow = 0; return res; } #elif defined(__GNUC__) && defined(__powerpc64__) static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, size_t offset, bool *overflow) { size_t res; unsigned long m_overflow; __asm__ ("mulld %0,%2,%3\n\t" "mulhdu %1,%2,%3\n\t" "addc %0,%0,%4\n\t" "addze %1,%1\n" : "=&r"(res), "=&r"(m_overflow) : "r"(nmemb), "r"(size), "r"(offset) : "xer"); if (UNEXPECTED(m_overflow)) { *overflow = 1; return 0; } *overflow = 0; return res; } #elif SIZEOF_SIZE_T == 4 static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, size_t offset, bool *overflow) { uint64_t res = (uint64_t) nmemb * (uint64_t) size + (uint64_t) offset; if (UNEXPECTED(res > UINT64_C(0xFFFFFFFF))) { *overflow = 1; return 0; } *overflow = 0; return (size_t) res; } #else static zend_always_inline size_t zend_safe_address(size_t nmemb, size_t size, size_t offset, bool *overflow) { size_t res = nmemb * size + offset; double _d = (double)nmemb * (double)size + (double)offset; double _delta = (double)res - _d; if (UNEXPECTED((_d + _delta ) != _d)) { *overflow = 1; return 0; } *overflow = 0; return res; } #endif static zend_always_inline size_t zend_safe_address_guarded(size_t nmemb, size_t size, size_t offset) { bool overflow; size_t ret = zend_safe_address(nmemb, size, offset, &overflow); if (UNEXPECTED(overflow)) { zend_error_noreturn(E_ERROR, "Possible integer overflow in memory allocation (%zu * %zu + %zu)", nmemb, size, offset); return 0; } return ret; } /* A bit more generic version of the same */ static zend_always_inline size_t zend_safe_addmult(size_t nmemb, size_t size, size_t offset, const char *message) { bool overflow; size_t ret = zend_safe_address(nmemb, size, offset, &overflow); if (UNEXPECTED(overflow)) { zend_error_noreturn(E_ERROR, "Possible integer overflow in %s (%zu * %zu + %zu)", message, nmemb, size, offset); return 0; } return ret; } #endif /* ZEND_MULTIPLY_H */

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docroot: /var/www/469ed2f6-4d4b-4a8a-9f5e-ee4ef04d3bc8/public_html

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curdir: /opt/ecp-php84/include/php/Zend

	.		4096
	..		4096
	Optimizer		4096
X	zend.h		17662
X	zend_API.h		108956
X	zend_alloc.h		20701
X	zend_alloc_sizes.h		2629
X	zend_arena.h		6081
X	zend_ast.h		13789
X	zend_atomic.h		13081
X	zend_attributes.h		5913
X	zend_attributes_arginfo.h		14522
X	zend_bitset.h		8083
X	zend_build.h		1626
X	zend_builtin_functions.h		1573
X	zend_builtin_functions_arginfo.h		15229
X	zend_call_stack.h		3100
X	zend_closures.h		2315
X	zend_closures_arginfo.h		2064
X	zend_compile.h		53450
X	zend_config.h		32
X	zend_config.w32.h		1949
X	zend_constants.h		7128
X	zend_constants_arginfo.h		1893
X	zend_cpuinfo.h		9513
X	zend_dtrace.h		2051
X	zend_enum.h		2928
X	zend_enum_arginfo.h		1691
X	zend_errors.h		2416
X	zend_exceptions.h		4648
X	zend_exceptions_arginfo.h		17678
X	zend_execute.h		23964
X	zend_extensions.h		6588
X	zend_fibers.h		5412
X	zend_fibers_arginfo.h		3530
X	zend_float.h		15468
X	zend_frameless_function.h		5518
X	zend_gc.h		4688
X	zend_gdb.h		1420
X	zend_generators.h		7664
X	zend_generators_arginfo.h		2889
X	zend_globals.h		10004
X	zend_globals_macros.h		2841
X	zend_hash.h		51567
X	zend_highlight.h		2321
X	zend_hrtime.h		3842
X	zend_inheritance.h		3186
X	zend_ini.h		12163
X	zend_ini_parser.h		3565
X	zend_ini_scanner.h		1978
X	zend_ini_scanner_defs.h		204
X	zend_interfaces.h		4118
X	zend_interfaces_arginfo.h		7839
X	zend_iterators.h		3901
X	zend_language_parser.h		10964
X	zend_language_scanner.h		3071
X	zend_language_scanner_defs.h		263
X	zend_lazy_objects.h		4719
X	zend_list.h		3483
X	zend_llist.h		4032
X	zend_long.h		4227
X	zend_map_ptr.h		3571
X	zend_max_execution_timer.h		1484
X	zend_mmap.h		1512
X	zend_modules.h		4826
X	zend_multibyte.h		4946
X	zend_multiply.h		10302
X	zend_object_handlers.h		18085
X	zend_objects.h		1941
X	zend_objects_API.h		5607
X	zend_observer.h		9036
X	zend_operators.h		34059
X	zend_portability.h		27445
X	zend_property_hooks.h		1824
X	zend_ptr_stack.h		4321
X	zend_range_check.h		3000
X	zend_signal.h		4105
X	zend_smart_str.h		7045
X	zend_smart_str_public.h		1222
X	zend_smart_string.h		4207
X	zend_smart_string_public.h		1240
X	zend_sort.h		1560
X	zend_stack.h		2442
X	zend_stream.h		3641
X	zend_string.h		22693
X	zend_strtod.h		2344
X	zend_strtod_int.h		2874
X	zend_system_id.h		1424
X	zend_type_info.h		4544
X	zend_types.h		52285
X	zend_variables.h		3088
X	zend_verify_type_inference.h		8262
X	zend_virtual_cwd.h		13200
X	zend_vm.h		2112
X	zend_vm_def.h		302651
X	zend_vm_execute.h		2277307
X	zend_vm_handlers.h		92711
X	zend_vm_opcodes.h		13819
X	zend_vm_trace_handlers.h		3216
X	zend_vm_trace_lines.h		1755
X	zend_vm_trace_map.h		2665
X	zend_weakrefs.h		3226
X	zend_weakrefs_arginfo.h		3440