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Restore missing cosmopolitan documentation on website

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Justine Tunney 2023-07-30 11:05:05 -07:00
parent 58352df0a4
commit d9d5f45e2d
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GPG key ID: BE714B4575D6E328
36 changed files with 715 additions and 228 deletions
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13
libc/integral/c.inc
View file

@ -44,6 +44,10 @@
#endif
#endif
#ifdef __chibicc__
#define __extension__
#endif
#if __STDC_VERSION__ + 0 < 201112
#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
#define _Alignas(x) __attribute__((__aligned__(x)))
@ -828,13 +832,18 @@ void abort(void) wontreturn;
#define __static_yoink_source(PATH)
#endif
#define __strong_reference(sym, aliassym) \
extern __typeof(sym) aliassym __attribute__((__alias__(#sym)))
#define __weak_reference(sym, alias) \
__asm__(".weak\t" #alias "\n\t" \
".equ\t" #alias ", " #sym "\n\t" \
".type\t" #alias ",@notype")
#ifndef __chibicc__
#define __strong_reference(sym, alias) \
extern __typeof(sym) alias __attribute__((__alias__(#sym)))
#else
#define __strong_reference(sym, alias) __weak_reference(sym, alias)
#endif
#define __funline \
extern __inline \
__attribute__((__gnu_inline__, __always_inline__, __artificial__))

4
libc/intrin/bzero.c
View file

@ -43,7 +43,7 @@ static void bzero128(char *p, size_t n) {
}
}
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
_Microarchitecture("avx") static void bzero_avx(char *p, size_t n) {
xmm_t v = {0};
if (IsAsan()) __asan_verify(p, n);
@ -154,7 +154,7 @@ void bzero(void *p, size_t n) {
b[--n] = x;
} while (n);
}
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
} else if (IsTiny()) {
asm("rep stosb" : "+D"(b), "+c"(n), "=m"(*(char(*)[n])b) : "a"(0));
return;

4
libc/intrin/memchr.c
View file

@ -35,7 +35,7 @@ static inline const unsigned char *memchr_pure(const unsigned char *s,
return 0;
}
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
dontasan static inline const unsigned char *memchr_sse(const unsigned char *s,
unsigned char c,
size_t n) {
@ -71,7 +71,7 @@ dontasan static inline const unsigned char *memchr_sse(const unsigned char *s,
* @asyncsignalsafe
*/
void *memchr(const void *s, int c, size_t n) {
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
const void *r;
if (IsAsan()) __asan_verify(s, n);
r = memchr_sse(s, c, n);

4
libc/intrin/memcmp.c
View file

@ -26,7 +26,7 @@
typedef char xmm_t __attribute__((__vector_size__(16), __aligned__(1)));
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
static dontinline antiquity int memcmp_sse(const unsigned char *p,
const unsigned char *q, size_t n) {
@ -143,7 +143,7 @@ int memcmp(const void *a, const void *b, size_t n) {
const unsigned char *p, *q;
if ((p = a) == (q = b) || !n) return 0;
if ((c = *p - *q)) return c;
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
if (!IsTiny()) {
if (n <= 16) {
if (n >= 8) {

4
libc/intrin/memmove.c
View file

@ -95,7 +95,7 @@ void *memmove(void *dst, const void *src, size_t n) {
d = dst;
s = src;
#ifdef __x86__
#if defined(__x86_64__) && !defined(__chibicc__)
if (IsTiny()) {
uint16_t w1, w2;
uint32_t l1, l2;
@ -214,7 +214,7 @@ void *memmove(void *dst, const void *src, size_t n) {
default:
if (d == s) return d;
#ifdef __x86__
#if defined(__x86_64__) && !defined(__chibicc__)
if (n < kHalfCache3 || !kHalfCache3) {
if (d > s) {
if (IsAsan() || n < 900 || !X86_HAVE(ERMS)) {

4
libc/intrin/memrchr.c
View file

@ -35,7 +35,7 @@ static inline const unsigned char *memrchr_pure(const unsigned char *s,
return 0;
}
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
dontasan static inline const unsigned char *memrchr_sse(const unsigned char *s,
unsigned char c,
size_t n) {
@ -69,7 +69,7 @@ dontasan static inline const unsigned char *memrchr_sse(const unsigned char *s,
* @asyncsignalsafe
*/
void *memrchr(const void *s, int c, size_t n) {
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
const void *r;
if (IsAsan()) __asan_verify(s, n);
r = memrchr_sse(s, c, n);

7
libc/intrin/memset.c
View file

@ -24,9 +24,9 @@
#include "libc/str/str.h"
#ifndef __aarch64__
#ifndef __chibicc__
typedef char xmm_t __attribute__((__vector_size__(16), __aligned__(1)));
typedef long long xmm_a __attribute__((__vector_size__(16), __aligned__(16)));
static void *memset_sse(char *p, char c, size_t n) {
xmm_t v = {c, c, c, c, c, c, c, c, c, c, c, c, c, c, c, c};
if (IsAsan()) __asan_verify(p, n);
@ -44,8 +44,9 @@ static void *memset_sse(char *p, char c, size_t n) {
}
return p;
}
#endif
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
_Microarchitecture("avx") static void *memset_avx(char *p, char c, size_t n) {
char *t;
xmm_t v = {c, c, c, c, c, c, c, c, c, c, c, c, c, c, c, c};
@ -158,7 +159,7 @@ void *memset(void *p, int c, size_t n) {
} while (n);
}
return b;
#ifdef __x86__
#if defined(__x86_64__) && !defined(__chibicc__)
} else if (IsTiny()) {
asm("rep stosb" : "+D"(b), "+c"(n), "=m"(*(char(*)[n])b) : "a"(c));
return p;

2
libc/intrin/stpcpy.c
View file

@ -38,7 +38,7 @@ dontasan char *stpcpy(char *d, const char *s) {
if (IsAsan()) {
__asan_verify(d, strlen(s) + 1);
}
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
for (; (uintptr_t)(s + i) & 15; ++i) {
if (!(d[i] = s[i])) {
return d + i;

4
libc/intrin/strchr.c
View file

@ -30,7 +30,7 @@ static inline const char *strchr_pure(const char *s, int c) {
}
}
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
typedef char xmm_t __attribute__((__vector_size__(16), __aligned__(16)));
dontasan static inline const char *strchr_sse(const char *s, unsigned char c) {
unsigned k;
@ -95,7 +95,7 @@ static dontasan inline const char *strchr_x64(const char *p, uint64_t c) {
* @vforksafe
*/
char *strchr(const char *s, int c) {
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
const char *r;
if (X86_HAVE(SSE)) {
if (IsAsan()) __asan_verify(s, 1);

4
libc/intrin/strchrnul.c
View file

@ -30,7 +30,7 @@ static inline const char *strchrnul_pure(const char *s, int c) {
}
}
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
typedef char xmm_t __attribute__((__vector_size__(16), __aligned__(16)));
dontasan static inline const char *strchrnul_sse(const char *s,
unsigned char c) {
@ -94,7 +94,7 @@ dontasan static const char *strchrnul_x64(const char *p, uint64_t c) {
* NUL terminator if c is not found
*/
char *strchrnul(const char *s, int c) {
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
const char *r;
if (X86_HAVE(SSE)) {
if (IsAsan()) __asan_verify(s, 1);

2
libc/intrin/strcpy.c
View file

@ -39,7 +39,7 @@ dontasan char *strcpy(char *d, const char *s) {
if (IsAsan()) {
__asan_verify(d, strlen(s) + 1);
}
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
for (; (uintptr_t)(s + i) & 15; ++i) {
if (!(d[i] = s[i])) {
return d;

2
libc/intrin/strlen.c
View file

@ -30,7 +30,7 @@
*/
dontasan size_t strlen(const char *s) {
if (IsAsan()) __asan_verify_str(s);
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
typedef char xmm_t __attribute__((__vector_size__(16), __aligned__(16)));
xmm_t z = {0};
unsigned m, k = (uintptr_t)s & 15;

4
libc/intrin/weaken.h
View file

@ -2,11 +2,15 @@
#define COSMOPOLITAN_LIBC_BITS_WEAKEN_H_
#if !(__ASSEMBLER__ + __LINKER__ + 0)
#ifndef __chibicc__
#define _weaken(symbol) \
__extension__({ \
extern __typeof__(symbol) symbol __attribute__((__weak__)); \
&symbol; \
})
#else
#define _weaken(symbol) (&(symbol))
#endif
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_BITS_WEAKEN_H_ */

652
libc/stdckdint.h
View file

@ -1,10 +1,656 @@
#ifndef COSMOPOLITAN_LIBC_STDCKDINT_H_
#define COSMOPOLITAN_LIBC_STDCKDINT_H_
/*
* Copyright 2023 Justine Alexandra Roberts Tunney
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
* above copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/**
* @fileoverview C23 Checked Arithmetic
*
* This header defines three type generic functions:
*
* - `bool ckd_add(res, a, b)`
* - `bool ckd_sub(res, a, b)`
* - `bool ckd_mul(res, a, b)`
*
* Which allow integer arithmetic errors to be detected. There are many
* kinds of integer errors, e.g. overflow, truncation, etc. These funcs
* catch them all. Here's an example of how it works:
*
* uint32_t c;
* int32_t a = 0x7fffffff;
* int32_t b = 2;
* assert(!ckd_add(&c, a, b));
* assert(c == 0x80000001u);
*
* Experienced C / C++ users should find this example counter-intuitive
* because the expression `0x7fffffff + 2` not only overflows it's also
* undefined behavior. However here we see it's specified, and does not
* result in an error. That's because C23 checked arithmetic is not the
* arithmetic you're used to. The new standard changes the mathematics.
*
* C23 checked arithmetic is defined as performing the arithmetic using
* infinite precision and then checking if the resulting value will fit
* in the output type. Our example above did not result in an error due
* to `0x80000001` being a legal value for `uint32_t`.
*
* This implementation will use the GNU compiler builtins, when they're
* available, only if you don't use build flags like `-std=c11` because
* they define `__STRICT_ANSI__` and GCC extensions aren't really ANSI.
* Instead, you'll get a pretty good pure C11 and C++11 implementation.
*
* @see https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3096.pdf
* @version 0.1 (2023-07-22)
*/
#ifndef JTCKDINT_H_
#define JTCKDINT_H_
/* clang-format off */
#ifdef __has_include
#define __ckd_has_include(x) __has_include(x)
#else
#define __ckd_has_include(x) 0
#endif
#define __STDC_VERSION_STDCKDINT_H__ 202311L
#if ((defined(__llvm__) || \
(defined(__GNUC__) && __GNUC__ * 100 + __GNUC_MINOR__ >= 406)) && \
!defined(__STRICT_ANSI__))
#define __ckd_have_int128
#define __ckd_intmax __int128
#elif ((defined(__cplusplus) && __cplusplus >= 201103L) || \
(defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L))
#define __ckd_intmax long long
#else
#define __ckd_intmax long
#endif
typedef signed __ckd_intmax __ckd_intmax_t;
typedef unsigned __ckd_intmax __ckd_uintmax_t;
#ifdef __has_builtin
#define __ckd_has_builtin(x) __has_builtin(x)
#else
#define __ckd_has_builtin(x) 0
#endif
#if (!defined(__STRICT_ANSI__) && \
((defined(__GNUC__) && __GNUC__ >= 5 && \
!defined(__chibicc__) && !defined(__ICC)) || \
(__ckd_has_builtin(__builtin_add_overflow) && \
__ckd_has_builtin(__builtin_sub_overflow) && \
__ckd_has_builtin(__builtin_mul_overflow))))
#define ckd_add(res, x, y) __builtin_add_overflow((x), (y), (res))
#define ckd_sub(res, x, y) __builtin_sub_overflow((x), (y), (res))
#define ckd_mul(res, x, y) __builtin_mul_overflow((x), (y), (res))
#endif /* COSMOPOLITAN_LIBC_STDCKDINT_H_ */
#elif defined(__cplusplus) && __cplusplus >= 201103L
#include "third_party/libcxx/type_traits"
#include "third_party/libcxx/limits"
template <typename __T, typename __U, typename __V>
inline bool ckd_add(__T *__res, __U __a, __V __b) {
static_assert(std::is_integral<__T>::value &&
std::is_integral<__U>::value &&
std::is_integral<__V>::value,
"non-integral types not allowed");
static_assert(!std::is_same<__T, bool>::value &&
!std::is_same<__U, bool>::value &&
!std::is_same<__V, bool>::value,
"checked booleans not supported");
static_assert(!std::is_same<__T, char>::value &&
!std::is_same<__U, char>::value &&
!std::is_same<__V, char>::value,
"unqualified char type is ambiguous");
__ckd_uintmax_t __x = __a;
__ckd_uintmax_t __y = __b;
__ckd_uintmax_t __z = __x + __y;
*__res = __z;
if (sizeof(__z) > sizeof(__U) && sizeof(__z) > sizeof(__V)) {
if (sizeof(__z) > sizeof(__T) || std::is_signed<__T>::value) {
return static_cast<__ckd_intmax_t>(__z) != static_cast<__T>(__z);
} else if (!std::is_same<__T, __ckd_uintmax_t>::value) {
return (__z != static_cast<__T>(__z) ||
((std::is_signed<__U>::value ||
std::is_signed<__V>::value) &&
static_cast<__ckd_intmax_t>(__z) < 0));
}
}
bool __truncated = false;
if (sizeof(__T) < sizeof(__ckd_intmax_t)) {
__truncated = __z != static_cast<__ckd_uintmax_t>(static_cast<__T>(__z));
}
switch (std::is_signed<__T>::value << 2 | //
std::is_signed<__U>::value << 1 | //
std::is_signed<__V>::value) {
case 0: // u = u + u
return __truncated | (__z < __x);
case 1: // u = u + s
__y ^= std::numeric_limits<__ckd_intmax_t>::min();
return __truncated |
(static_cast<__ckd_intmax_t>((__z ^ __x) &
(__z ^ __y)) < 0);
case 2: // u = s + u
__x ^= std::numeric_limits<__ckd_intmax_t>::min();
return __truncated |
(static_cast<__ckd_intmax_t>((__z ^ __x) &
(__z ^ __y)) < 0);
case 3: // u = s + s
return __truncated |
(static_cast<__ckd_intmax_t>(((__z | __x) & __y) |
((__z & __x) & ~__y)) < 0);
case 4: // s = u + u
return __truncated | (__z < __x) | (static_cast<__ckd_intmax_t>(__z) < 0);
case 5: // s = u + s
__y ^= std::numeric_limits<__ckd_intmax_t>::min();
return __truncated | (__x + __y < __y);
case 6: // s = s + u
__x ^= std::numeric_limits<__ckd_intmax_t>::min();
return __truncated | (__x + __y < __x);
case 7: // s = s + s
return __truncated |
(static_cast<__ckd_intmax_t>((__z ^ __x) &
(__z ^ __y)) < 0);
default:
for (;;) (void)0;
}
}
template <typename __T, typename __U, typename __V>
inline bool ckd_sub(__T *__res, __U __a, __V __b) {
static_assert(std::is_integral<__T>::value &&
std::is_integral<__U>::value &&
std::is_integral<__V>::value,
"non-integral types not allowed");
static_assert(!std::is_same<__T, bool>::value &&
!std::is_same<__U, bool>::value &&
!std::is_same<__V, bool>::value,
"checked booleans not supported");
static_assert(!std::is_same<__T, char>::value &&
!std::is_same<__U, char>::value &&
!std::is_same<__V, char>::value,
"unqualified char type is ambiguous");
__ckd_uintmax_t __x = __a;
__ckd_uintmax_t __y = __b;
__ckd_uintmax_t __z = __x - __y;
*__res = __z;
if (sizeof(__z) > sizeof(__U) && sizeof(__z) > sizeof(__V)) {
if (sizeof(__z) > sizeof(__T) || std::is_signed<__T>::value) {
return static_cast<__ckd_intmax_t>(__z) != static_cast<__T>(__z);
} else if (!std::is_same<__T, __ckd_uintmax_t>::value) {
return (__z != static_cast<__T>(__z) ||
((std::is_signed<__U>::value ||
std::is_signed<__V>::value) &&
static_cast<__ckd_intmax_t>(__z) < 0));
}
}
bool __truncated = false;
if (sizeof(__T) < sizeof(__ckd_intmax_t)) {
__truncated = __z != static_cast<__ckd_uintmax_t>(static_cast<__T>(__z));
}
switch (std::is_signed<__T>::value << 2 | //
std::is_signed<__U>::value << 1 | //
std::is_signed<__V>::value) {
case 0: // u = u - u
return __truncated | (__x < __y);
case 1: // u = u - s
__y ^= std::numeric_limits<__ckd_intmax_t>::min();
return __truncated |
(static_cast<__ckd_intmax_t>((__x ^ __y) &
(__z ^ __x)) < 0);
case 2: // u = s - u
return __truncated | (__y > __x) | (static_cast<__ckd_intmax_t>(__x) < 0);
case 3: // u = s - s
return __truncated |
(static_cast<__ckd_intmax_t>(((__z & __x) & __y) |
((__z | __x) & ~__y)) < 0);
case 4: // s = u - u
return __truncated |
((__x < __y) ^ (static_cast<__ckd_intmax_t>(__z) < 0));
case 5: // s = u - s
__y ^= std::numeric_limits<__ckd_intmax_t>::min();
return __truncated | (__x >= __y);
case 6: // s = s - u
__x ^= std::numeric_limits<__ckd_intmax_t>::min();
return __truncated | (__x < __y);
case 7: // s = s - s
return __truncated |
(static_cast<__ckd_intmax_t>((__x ^ __y) &
(__z ^ __x)) < 0);
default:
for (;;) (void)0;
}
}
template <typename __T, typename __U, typename __V>
inline bool ckd_mul(__T *__res, __U __a, __V __b) {
static_assert(std::is_integral<__T>::value &&
std::is_integral<__U>::value &&
std::is_integral<__V>::value,
"non-integral types not allowed");
static_assert(!std::is_same<__T, bool>::value &&
!std::is_same<__U, bool>::value &&
!std::is_same<__V, bool>::value,
"checked booleans not supported");
static_assert(!std::is_same<__T, char>::value &&
!std::is_same<__U, char>::value &&
!std::is_same<__V, char>::value,
"unqualified char type is ambiguous");
__ckd_uintmax_t __x = __a;
__ckd_uintmax_t __y = __b;
if ((sizeof(__U) * 8 - std::is_signed<__U>::value) +
(sizeof(__V) * 8 - std::is_signed<__V>::value) <=
(sizeof(__T) * 8 - std::is_signed<__T>::value)) {
if (sizeof(__ckd_uintmax_t) > sizeof(__T) || std::is_signed<__T>::value) {
__ckd_intmax_t __z = __x * __y;
return __z != (*__res = __z);
} else if (!std::is_same<__T, __ckd_uintmax_t>::value) {
__ckd_uintmax_t __z = __x * __y;
*__res = __z;
return (__z != static_cast<__T>(__z) ||
((std::is_signed<__U>::value ||
std::is_signed<__V>::value) &&
static_cast<__ckd_intmax_t>(__z) < 0));
}
}
switch (std::is_signed<__T>::value << 2 | //
std::is_signed<__U>::value << 1 | //
std::is_signed<__V>::value) {
case 0: { // u = u * u
__ckd_uintmax_t __z = __x * __y;
int __o = __x && __z / __x != __y;
*__res = __z;
return __o | (sizeof(__T) < sizeof(__z) &&
__z != static_cast<__ckd_uintmax_t>(*__res));
}
case 1: { // u = u * s
__ckd_uintmax_t __z = __x * __y;
int __o = __x && __z / __x != __y;
*__res = __z;
return (__o | ((static_cast<__ckd_intmax_t>(__y) < 0) & !!__x) |
(sizeof(__T) < sizeof(__z) &&
__z != static_cast<__ckd_uintmax_t>(*__res)));
}
case 2: { // u = s * u
__ckd_uintmax_t __z = __x * __y;
int __o = __x && __z / __x != __y;
*__res = __z;
return (__o | ((static_cast<__ckd_intmax_t>(__x) < 0) & !!__y) |
(sizeof(__T) < sizeof(__z) &&
__z != static_cast<__ckd_uintmax_t>(*__res)));
}
case 3: { // u = s * s
int __o = false;
if (static_cast<__ckd_intmax_t>(__x & __y) < 0) {
__x = -__x;
__y = -__y;
} else if (static_cast<__ckd_intmax_t>(__x ^ __y) < 0) {
__o = __x && __y;
}
__ckd_uintmax_t __z = __x * __y;
__o |= __x && __z / __x != __y;
*__res = __z;
return __o | (sizeof(__T) < sizeof(__z) &&
__z != static_cast<__ckd_uintmax_t>(*__res));
}
case 4: { // s = u * u
__ckd_uintmax_t __z = __x * __y;
int __o = __x && __z / __x != __y;
*__res = __z;
return (__o | (static_cast<__ckd_intmax_t>(__z) < 0) |
(sizeof(__T) < sizeof(__z) &&
__z != static_cast<__ckd_uintmax_t>(*__res)));
}
case 5: { // s = u * s
__ckd_uintmax_t __t = -__y;
__t = static_cast<__ckd_intmax_t>(__t) < 0 ? __y : __t;
__ckd_uintmax_t __p = __t * __x;
int __o = __t && __p / __t != __x;
int __n = static_cast<__ckd_intmax_t>(__y) < 0;
__ckd_uintmax_t __z = __n ? -__p : __p;
*__res = __z;
__ckd_uintmax_t __m = std::numeric_limits<__ckd_intmax_t>::max();
return (__o | (__p > __m + __n) |
(sizeof(__T) < sizeof(__z) &&
__z != static_cast<__ckd_uintmax_t>(*__res)));
}
case 6: { // s = s * u
__ckd_uintmax_t __t = -__x;
__t = static_cast<__ckd_intmax_t>(__t) < 0 ? __x : __t;
__ckd_uintmax_t __p = __t * __y;
int __o = __t && __p / __t != __y;
int __n = static_cast<__ckd_intmax_t>(__x) < 0;
__ckd_uintmax_t __z = __n ? -__p : __p;
*__res = __z;
__ckd_uintmax_t __m = std::numeric_limits<__ckd_intmax_t>::max();
return (__o | (__p > __m + __n) |
(sizeof(__T) < sizeof(__z) &&
__z != static_cast<__ckd_uintmax_t>(*__res)));
}
case 7: { // s = s * s
__ckd_uintmax_t __z = __x * __y;
*__res = __z;
return ((((static_cast<__ckd_intmax_t>(__y) < 0) &&
(static_cast<__ckd_intmax_t>(__x) ==
std::numeric_limits<__ckd_intmax_t>::min())) ||
(__y && ((static_cast<__ckd_intmax_t>(__z) /
static_cast<__ckd_intmax_t>(__y)) !=
static_cast<__ckd_intmax_t>(__x)))) |
(sizeof(__T) < sizeof(__z) &&
__z != static_cast<__ckd_uintmax_t>(*__res)));
}
default:
for (;;) (void)0;
}
}
#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
#define ckd_add(res, a, b) __ckd_expr(add, (res), (a), (b))
#define ckd_sub(res, a, b) __ckd_expr(sub, (res), (a), (b))
#define ckd_mul(res, a, b) __ckd_expr(mul, (res), (a), (b))
#if defined(__GNUC__) || defined(__llvm__)
#define __ckd_inline \
extern __inline __attribute__((__gnu_inline__, \
__always_inline__, \
__artificial__))
#else
#define __ckd_inline static inline
#endif
#ifdef __ckd_have_int128
#define __ckd_generic_int128(x, y) , signed __int128: x, unsigned __int128: y
#else
#define __ckd_generic_int128(x, y)
#endif
#define __ckd_sign(T) \
((T)1 << (sizeof(T) * 8 - 1))
#define __ckd_is_signed(x) \
_Generic(x, \
signed char: 1, \
unsigned char: 0, \
signed short: 1, \
unsigned short: 0, \
signed int: 1, \
unsigned int: 0, \
signed long: 1, \
unsigned long: 0, \
signed long long: 1, \
unsigned long long: 0 \
__ckd_generic_int128(1, 0))
#define __ckd_expr(op, res, a, b) \
(_Generic(*res, \
signed char: __ckd_##op##_schar, \
unsigned char: __ckd_##op##_uchar, \
signed short: __ckd_##op##_sshort, \
unsigned short: __ckd_##op##_ushort, \
signed int: __ckd_##op##_sint, \
unsigned int: __ckd_##op##_uint, \
signed long: __ckd_##op##_slong, \
unsigned long: __ckd_##op##_ulong, \
signed long long: __ckd_##op##_slonger, \
unsigned long long: __ckd_##op##_ulonger \
__ckd_generic_int128( \
__ckd_##op##_sint128, \
__ckd_##op##_uint128))( \
res, a, b, \
__ckd_is_signed(a), \
__ckd_is_signed(b)))
#define __ckd_declare_add(S, T) \
__ckd_inline char S(void *__res, \
__ckd_uintmax_t __x, \
__ckd_uintmax_t __y, \
char __a_signed, \
char __b_signed) { \
__ckd_uintmax_t __z = __x + __y; \
*(T *)__res = __z; \
char __truncated = 0; \
if (sizeof(T) < sizeof(__ckd_intmax_t)) { \
__truncated = __z != (__ckd_uintmax_t)(T)__z; \
} \
switch (__ckd_is_signed((T)0) << 2 | \
__a_signed << 1 | __b_signed) { \
case 0: /* u = u + u */ \
return __truncated | (__z < __x); \
case 1: /* u = u + s */ \
__y ^= __ckd_sign(__ckd_uintmax_t); \
return __truncated | \
((__ckd_intmax_t)((__z ^ __x) & \
(__z ^ __y)) < 0); \
case 2: /* u = s + u */ \
__x ^= __ckd_sign(__ckd_uintmax_t); \
return __truncated | \
((__ckd_intmax_t)((__z ^ __x) & \
(__z ^ __y)) < 0); \
case 3: /* u = s + s */ \
return __truncated | \
((__ckd_intmax_t)(((__z | __x) & __y) | \
((__z & __x) & ~__y)) < 0); \
case 4: /* s = u + u */ \
return __truncated | (__z < __x) | ((__ckd_intmax_t)__z < 0); \
case 5: /* s = u + s */ \
__y ^= __ckd_sign(__ckd_uintmax_t); \
return __truncated | (__x + __y < __y); \
case 6: /* s = s + u */ \
__x ^= __ckd_sign(__ckd_uintmax_t); \
return __truncated | (__x + __y < __x); \
case 7: /* s = s + s */ \
return __truncated | \
((__ckd_intmax_t)((__z ^ __x) & \
(__z ^ __y)) < 0); \
default: \
for (;;) (void)0; \
} \
}
__ckd_declare_add(__ckd_add_schar, signed char)
__ckd_declare_add(__ckd_add_uchar, unsigned char)
__ckd_declare_add(__ckd_add_sshort, signed short)
__ckd_declare_add(__ckd_add_ushort, unsigned short)
__ckd_declare_add(__ckd_add_sint, signed int)
__ckd_declare_add(__ckd_add_uint, unsigned int)
__ckd_declare_add(__ckd_add_slong, signed long)
__ckd_declare_add(__ckd_add_ulong, unsigned long)
__ckd_declare_add(__ckd_add_slonger, signed long long)
__ckd_declare_add(__ckd_add_ulonger, unsigned long long)
#ifdef __ckd_have_int128
__ckd_declare_add(__ckd_add_sint128, signed __int128)
__ckd_declare_add(__ckd_add_uint128, unsigned __int128)
#endif
#define __ckd_declare_sub(S, T) \
__ckd_inline char S(void *__res, \
__ckd_uintmax_t __x, \
__ckd_uintmax_t __y, \
char __a_signed, \
char __b_signed) { \
__ckd_uintmax_t __z = __x - __y; \
*(T *)__res = __z; \
char __truncated = 0; \
if (sizeof(T) < sizeof(__ckd_intmax_t)) { \
__truncated = __z != (__ckd_uintmax_t)(T)__z; \
} \
switch (__ckd_is_signed((T)0) << 2 | \
__a_signed << 1 | __b_signed) { \
case 0: /* u = u - u */ \
return __truncated | (__x < __y); \
case 1: /* u = u - s */ \
__y ^= __ckd_sign(__ckd_uintmax_t); \
return __truncated | \
((__ckd_intmax_t)((__x ^ __y) & \
(__z ^ __x)) < 0); \
case 2: /* u = s - u */ \
return __truncated | (__y > __x) | ((__ckd_intmax_t)__x < 0); \
case 3: /* u = s - s */ \
return __truncated | \
((__ckd_intmax_t)(((__z & __x) & __y) | \
((__z | __x) & ~__y)) < 0); \
case 4: /* s = u - u */ \
return __truncated | ((__x < __y) ^ ((__ckd_intmax_t)__z < 0)); \
case 5: /* s = u - s */ \
__y ^= __ckd_sign(__ckd_uintmax_t); \
return __truncated | (__x >= __y); \
case 6: /* s = s - u */ \
__x ^= __ckd_sign(__ckd_uintmax_t); \
return __truncated | (__x < __y); \
case 7: /* s = s - s */ \
return __truncated | \
((__ckd_intmax_t)((__x ^ __y) & \
(__z ^ __x)) < 0); \
default: \
for (;;) (void)0; \
} \
}
__ckd_declare_sub(__ckd_sub_schar, signed char)
__ckd_declare_sub(__ckd_sub_uchar, unsigned char)
__ckd_declare_sub(__ckd_sub_sshort, signed short)
__ckd_declare_sub(__ckd_sub_ushort, unsigned short)
__ckd_declare_sub(__ckd_sub_sint, signed int)
__ckd_declare_sub(__ckd_sub_uint, unsigned int)
__ckd_declare_sub(__ckd_sub_slong, signed long)
__ckd_declare_sub(__ckd_sub_ulong, unsigned long)
__ckd_declare_sub(__ckd_sub_slonger, signed long long)
__ckd_declare_sub(__ckd_sub_ulonger, unsigned long long)
#ifdef __ckd_have_int128
__ckd_declare_sub(__ckd_sub_sint128, signed __int128)
__ckd_declare_sub(__ckd_sub_uint128, unsigned __int128)
#endif
#define __ckd_declare_mul(S, T) \
__ckd_inline char S(void *__res, \
__ckd_uintmax_t __x, \
__ckd_uintmax_t __y, \
char __a_signed, \
char __b_signed) { \
switch (__ckd_is_signed((T)0) << 2 | \
__a_signed << 1 | __b_signed) { \
case 0: { /* u = u * u */ \
__ckd_uintmax_t __z = __x * __y; \
int __o = __x && __z / __x != __y; \
*(T *)__res = __z; \
return __o | (sizeof(T) < sizeof(__z) && \
__z != (__ckd_uintmax_t)*(T *)__res); \
} \
case 1: { /* u = u * s */ \
__ckd_uintmax_t __z = __x * __y; \
int __o = __x && __z / __x != __y; \
*(T *)__res = __z; \
return (__o | (((__ckd_intmax_t)__y < 0) & !!__x) | \
(sizeof(T) < sizeof(__z) && \
__z != (__ckd_uintmax_t)*(T *)__res)); \
} \
case 2: { /* u = s * u */ \
__ckd_uintmax_t __z = __x * __y; \
int __o = __x && __z / __x != __y; \
*(T *)__res = __z; \
return (__o | (((__ckd_intmax_t)__x < 0) & !!__y) | \
(sizeof(T) < sizeof(__z) && \
__z != (__ckd_uintmax_t)*(T *)__res)); \
} \
case 3: { /* u = s * s */ \
int __o = 0; \
if ((__ckd_intmax_t)(__x & __y) < 0) { \
__x = -__x; \
__y = -__y; \
} else if ((__ckd_intmax_t)(__x ^ __y) < 0) { \
__o = __x && __y; \
} \
__ckd_uintmax_t __z = __x * __y; \
__o |= __x && __z / __x != __y; \
*(T *)__res = __z; \
return __o | (sizeof(T) < sizeof(__z) && \
__z != (__ckd_uintmax_t)*(T *)__res); \
} \
case 4: { /* s = u * u */ \
__ckd_uintmax_t __z = __x * __y; \
int __o = __x && __z / __x != __y; \
*(T *)__res = __z; \
return (__o | ((__ckd_intmax_t)(__z) < 0) | \
(sizeof(T) < sizeof(__z) && \
__z != (__ckd_uintmax_t)*(T *)__res)); \
} \
case 5: { /* s = u * s */ \
__ckd_uintmax_t __t = -__y; \
__t = (__ckd_intmax_t)(__t) < 0 ? __y : __t; \
__ckd_uintmax_t __p = __t * __x; \
int __o = __t && __p / __t != __x; \
int __n = (__ckd_intmax_t)__y < 0; \
__ckd_uintmax_t __z = __n ? -__p : __p; \
*(T *)__res = __z; \
__ckd_uintmax_t __m = __ckd_sign(__ckd_uintmax_t) - 1; \
return (__o | (__p > __m + __n) | \
(sizeof(T) < sizeof(__z) && \
__z != (__ckd_uintmax_t)*(T *)__res)); \
} \
case 6: { /* s = s * u */ \
__ckd_uintmax_t __t = -__x; \
__t = (__ckd_intmax_t)(__t) < 0 ? __x : __t; \
__ckd_uintmax_t __p = __t * __y; \
int __o = __t && __p / __t != __y; \
int __n = (__ckd_intmax_t)__x < 0; \
__ckd_uintmax_t __z = __n ? -__p : __p; \
*(T *)__res = __z; \
__ckd_uintmax_t __m = __ckd_sign(__ckd_uintmax_t) - 1; \
return (__o | (__p > __m + __n) | \
(sizeof(T) < sizeof(__z) && \
__z != (__ckd_uintmax_t)*(T *)__res)); \
} \
case 7: { /* s = s * s */ \
__ckd_uintmax_t __z = __x * __y; \
*(T *)__res = __z; \
return (((((__ckd_intmax_t)__y < 0) && \
(__x == __ckd_sign(__ckd_uintmax_t))) || \
(__y && (((__ckd_intmax_t)__z / \
(__ckd_intmax_t)__y) != \
(__ckd_intmax_t)__x))) | \
(sizeof(T) < sizeof(__z) && \
__z != (__ckd_uintmax_t)*(T *)__res)); \
} \
default: \
for (;;) (void)0; \
} \
}
__ckd_declare_mul(__ckd_mul_schar, signed char)
__ckd_declare_mul(__ckd_mul_uchar, unsigned char)
__ckd_declare_mul(__ckd_mul_sshort, signed short)
__ckd_declare_mul(__ckd_mul_ushort, unsigned short)
__ckd_declare_mul(__ckd_mul_sint, signed int)
__ckd_declare_mul(__ckd_mul_uint, unsigned int)
__ckd_declare_mul(__ckd_mul_slong, signed long)
__ckd_declare_mul(__ckd_mul_ulong, unsigned long)
__ckd_declare_mul(__ckd_mul_slonger, signed long long)
__ckd_declare_mul(__ckd_mul_ulonger, unsigned long long)
#ifdef __ckd_have_int128
__ckd_declare_mul(__ckd_mul_sint128, signed __int128)
__ckd_declare_mul(__ckd_mul_uint128, unsigned __int128)
#endif
#else
#pragma message "checked integer arithmetic unsupported in this environment"
#define ckd_add(res, x, y) (*(res) = (x) + (y), 0)
#define ckd_sub(res, x, y) (*(res) = (x) - (y), 0)
#define ckd_mul(res, x, y) (*(res) = (x) * (y), 0)
#endif /* GNU */
#endif /* JTCKDINT_H_ */

6
libc/str/bcmp.c
View file

@ -23,6 +23,7 @@
typedef uint64_t xmm_t __attribute__((__vector_size__(16), __aligned__(1)));
#if !defined(__chibicc__)
static int bcmp_sse(const char *p, const char *q, size_t n) {
xmm_t a;
while (n > 32) {
@ -36,8 +37,9 @@ static int bcmp_sse(const char *p, const char *q, size_t n) {
*(const xmm_t *)(p + n - 16) ^ *(const xmm_t *)(q + n - 16);
return !!(a[0] | a[1]);
}
#endif
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
_Microarchitecture("avx") static int bcmp_avx(const char *p, const char *q,
size_t n) {
xmm_t a, b, c, d;
@ -123,12 +125,14 @@ int bcmp(const void *a, const void *b, size_t n) {
__builtin_memcpy(&j, q + n - 4, 4);
return !!(i ^ j);
}
#ifndef __chibicc__
#ifdef __x86_64__
} else if (LIKELY(X86_HAVE(AVX))) {
return bcmp_avx(p, q, n);
#endif
} else {
return bcmp_sse(p, q, n);
#endif
}
}
while (n--) {

2
libc/str/djbsort.c
View file

@ -34,7 +34,7 @@ void djbsort(int32_t *a, size_t n) {
__asan_verify(a, m);
}
if (n > 1) {
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
if (X86_HAVE(AVX2)) {
djbsort_avx2(a, n);
} else {

2
libc/str/isutf8.c
View file

@ -60,7 +60,7 @@ dontasan bool _isutf8(const void *data, size_t size) {
p = data;
e = p + size;
while (p < e) {
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
if (!((intptr_t)p & 15)) {
for (;;) {
if ((m = __builtin_ia32_pmovmskb128(*(xmm_t *)p >= (xmm_t){0}) ^

2
libc/str/memmem.c
View file

@ -34,7 +34,7 @@ typedef char xmm_t __attribute__((__vector_size__(16), __aligned__(16)));
*/
dontasan void *memmem(const void *haystack, size_t haystacklen,
const void *needle, size_t needlelen) {
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
char c;
xmm_t n, *v;
unsigned i, k, m;

4
libc/str/memrchr16.c
View file

@ -34,7 +34,7 @@ static inline const char16_t *memrchr16_pure(const char16_t *s, char16_t c,
return 0;
}
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
dontasan static inline const char16_t *memrchr16_sse(const char16_t *s,
char16_t c, size_t n) {
size_t i;
@ -67,7 +67,7 @@ dontasan static inline const char16_t *memrchr16_sse(const char16_t *s,
* @asyncsignalsafe
*/
void *memrchr16(const void *s, int c, size_t n) {
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
const void *r;
if (!IsTiny() && X86_HAVE(SSE)) {
if (IsAsan()) __asan_verify(s, n * 2);

4
libc/str/rawmemchr.c
View file

@ -31,7 +31,7 @@ static inline const unsigned char *rawmemchr_pure(const unsigned char *s,
}
}
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
typedef char xmm_t __attribute__((__vector_size__(16), __aligned__(16)));
dontasan static inline const char *rawmemchr_sse(const char *s,
unsigned char c) {
@ -68,7 +68,7 @@ static inline dontasan uint64_t UncheckedAlignedRead64(unsigned char *p) {
* @return is pointer to first instance of c
*/
void *rawmemchr(const void *s, int c) {
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
const void *r;
if (X86_HAVE(SSE)) {
if (IsAsan()) __asan_verify(s, 1);

2
libc/str/strcasestr.c
View file

@ -36,7 +36,7 @@ typedef char xmm_t __attribute__((__vector_size__(16), __aligned__(16)));
* @see strstr()
*/
dontasan char *strcasestr(const char *haystack, const char *needle) {
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
char c;
xmm_t *p;
size_t i;

2
libc/str/strlen16.c
View file

@ -30,7 +30,7 @@ typedef char16_t xmm_t __attribute__((__vector_size__(16), __aligned__(16)));
* @asyncsignalsafe
*/
dontasan size_t strlen16(const char16_t *s) {
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
size_t n;
xmm_t z = {0};
unsigned m, k = (uintptr_t)s & 15;

2
libc/str/strstr.c
View file

@ -36,7 +36,7 @@ typedef char xmm_t __attribute__((__vector_size__(16), __aligned__(16)));
* @see memmem()
*/
dontasan char *strstr(const char *haystack, const char *needle) {
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
xmm_t *p;
size_t i;
unsigned k, m;

7
libc/str/timingsafe_bcmp.c
View file

@ -22,8 +22,8 @@
#include "libc/nexgen32e/x86feature.h"
#include "libc/str/str.h"
#ifndef __chibicc__
typedef uint64_t xmm_t __attribute__((__vector_size__(16), __aligned__(1)));
dontasan static unsigned timingsafe_bcmp_sse(const char *p, const char *q,
size_t n) {
uint64_t w;
@ -39,8 +39,9 @@ dontasan static unsigned timingsafe_bcmp_sse(const char *p, const char *q,
w = a[0] | a[1];
return w | w >> 32;
}
#endif
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
dontasan static _Microarchitecture("avx") int timingsafe_bcmp_avx(const char *p,
const char *q,
size_t n) {
@ -141,12 +142,14 @@ int timingsafe_bcmp(const void *a, const void *b, size_t n) {
__asan_verify(a, n);
__asan_verify(b, n);
}
#ifndef __chibicc__
#ifdef __x86_64__
if (X86_HAVE(AVX)) {
return timingsafe_bcmp_avx(p, q, n);
}
#endif
return timingsafe_bcmp_sse(p, q, n);
#endif
}
} else if (n >= 4) {
__builtin_memcpy(&u0, p, 4);

2
libc/str/wcslen.c
View file

@ -30,7 +30,7 @@ typedef wchar_t xmm_t __attribute__((__vector_size__(16), __aligned__(16)));
* @asyncsignalsafe
*/
dontasan size_t wcslen(const wchar_t *s) {
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
size_t n;
xmm_t z = {0};
unsigned m, k = (uintptr_t)s & 15;

2
libc/str/wcwidth.c
View file

@ -30,7 +30,7 @@ extern const uint32_t kCombiningCharsBits;
* Returns cell width of monospace character.
*/
int wcwidth(wchar_t c) {
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
if (LIKELY(32 <= c && c < 127)) {
return 1;
} else if (!c) {

4
libc/str/wmemrchr.c
View file

@ -35,7 +35,7 @@ static inline const wchar_t *wmemrchr_pure(const wchar_t *s, wchar_t c,
return 0;
}
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
dontasan static inline const wchar_t *wmemrchr_sse(const wchar_t *s, wchar_t c,
size_t n) {
size_t i;
@ -68,7 +68,7 @@ dontasan static inline const wchar_t *wmemrchr_sse(const wchar_t *s, wchar_t c,
* @asyncsignalsafe
*/
void *wmemrchr(const wchar_t *s, wchar_t c, size_t n) {
#ifdef __x86_64__
#if defined(__x86_64__) && !defined(__chibicc__)
size_t bytes;
const void *r;
if (IsAsan()) {