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-rw-r--r--sysdeps/i386/bits/select.h3
-rw-r--r--sysdeps/i386/bits/string.h14
-rw-r--r--sysdeps/i386/bzero.c3
-rw-r--r--sysdeps/i386/fpu/bits/mathinline.h9
-rw-r--r--sysdeps/i386/i486/atomicity.h4
-rw-r--r--sysdeps/i386/i486/bits/string.h160
-rw-r--r--sysdeps/i386/i586/bzero.S3
7 files changed, 140 insertions, 56 deletions
diff --git a/sysdeps/i386/bits/select.h b/sysdeps/i386/bits/select.h
index edcb562945..34d2b0b27a 100644
--- a/sysdeps/i386/bits/select.h
+++ b/sysdeps/i386/bits/select.h
@@ -58,8 +58,9 @@
# define __FD_ZERO(set) \
do { \
unsigned int __i; \
+ __fd_mask *__arr = (set); \
for (__i = 0; __i < sizeof (__fd_set) / sizeof (__fd_mask); ++__i) \
- ((__fd_mask *) set)[__i] = 0; \
+ __arr->fds_bits[__i] = 0; \
} while (0)
# define __FD_SET(d, set) ((set)->fds_bits[__FDELT (d)] |= __FDMASK (d))
# define __FD_CLR(d, set) ((set)->fds_bits[__FDELT (d)] &= ~__FDMASK (d))
diff --git a/sysdeps/i386/bits/string.h b/sysdeps/i386/bits/string.h
index 2931684781..c6deb2b6a4 100644
--- a/sysdeps/i386/bits/string.h
+++ b/sysdeps/i386/bits/string.h
@@ -18,11 +18,17 @@
Boston, MA 02111-1307, USA. */
#ifndef _STRING_H
-#error "Never use <bits/string.h> directly; include <string.h> instead."
+# error "Never use <bits/string.h> directly; include <string.h> instead."
#endif
-/* We only provide optimizations for the GNU CC. */
-#if defined __GNUC__ && __GNUC__ >= 2
+/* The ix86 processors can access unaligned multi-byte variables. */
+#define _STRING_ARCH_unaligned 1
+
+
+/* We only provide optimizations if the user selects them and if
+ GNU CC is used. */
+#if !defined __NO_STRING_INLINES && defined __USE_STRING_INLINES \
+ && defined __GNUC__ && __GNUC__ >= 2
#ifdef __cplusplus
# define __STRING_INLINE inline
@@ -741,4 +747,4 @@ strstr (__const char *__haystack, __const char *__needle)
#undef __STRING_INLINE
-#endif /* GNU CC */
+#endif /* use string inlines && GNU CC */
diff --git a/sysdeps/i386/bzero.c b/sysdeps/i386/bzero.c
index 5cc5989f90..99f2352dc6 100644
--- a/sysdeps/i386/bzero.c
+++ b/sysdeps/i386/bzero.c
@@ -26,7 +26,7 @@
#ifdef __GNUC__
void
-bzero (dstpp, len)
+__bzero (dstpp, len)
void *dstpp;
size_t len;
{
@@ -75,6 +75,7 @@ bzero (dstpp, len)
"0" (dstp), "c" (len), "a" (x) :
"cx");
}
+weak_alias (__bzero, bzero)
#else
#include <sysdeps/generic/bzero.c>
diff --git a/sysdeps/i386/fpu/bits/mathinline.h b/sysdeps/i386/fpu/bits/mathinline.h
index 55e9171459..edb6ee01d7 100644
--- a/sysdeps/i386/fpu/bits/mathinline.h
+++ b/sysdeps/i386/fpu/bits/mathinline.h
@@ -18,8 +18,9 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
-#ifndef _BITS_MATHINLINE_H
-#define _BITS_MATHINLINE_H 1
+#ifndef _MATH_H
+# error "Never use <bits/mathinline.h> directly; include <math.h> instead."
+#endif
#if defined __USE_ISOC9X && defined __GNUC__ && __GNUC__ >= 2
@@ -518,7 +519,7 @@ __finite (double __x)
("orl $0x800fffff, %0\n\t"
"incl %0\n\t"
"shrl $31, %0"
- : "=q" (__result) : "0" (((int *) &__x)[1]) : "cc");
+ : "=r" (__result) : "0" (((int *) &__x)[1]) : "cc");
return __result;
}
@@ -542,5 +543,3 @@ __inline_mathcode (__acosh1p, __x, \
#endif /* Not gcc <= 2.7. */
#endif /* __NO_MATH_INLINES */
#endif /* __GNUC__ */
-
-#endif /* _BITS_MATHINLINE_H */
diff --git a/sysdeps/i386/i486/atomicity.h b/sysdeps/i386/i486/atomicity.h
index 98a2531365..7157bc33d8 100644
--- a/sysdeps/i386/i486/atomicity.h
+++ b/sysdeps/i386/i486/atomicity.h
@@ -1,4 +1,4 @@
-/* Low-level functions for atomitc operations. ix86 version, x >= 4.
+/* Low-level functions for atomic operations. ix86 version, x >= 4.
Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
@@ -41,7 +41,7 @@ atomic_add (volatile uint32_t *mem, int val)
: : "ir" (val), "m" (*mem) : "memory");
}
-static inline int
+static inline char
__attribute__ ((unused))
compare_and_swap (volatile long int *p, long int oldval, long int newval)
{
diff --git a/sysdeps/i386/i486/bits/string.h b/sysdeps/i386/i486/bits/string.h
index 770f5c1e15..5e4abbc3e5 100644
--- a/sysdeps/i386/i486/bits/string.h
+++ b/sysdeps/i386/i486/bits/string.h
@@ -18,11 +18,17 @@
Boston, MA 02111-1307, USA. */
#ifndef _STRING_H
-#error "Never use <bits/string.h> directly; include <string.h> instead."
+# error "Never use <bits/string.h> directly; include <string.h> instead."
#endif
-/* We only provide optimizations for the GNU CC. */
-#if defined __GNUC__ && __GNUC__ >= 2
+/* The ix86 processors can access unaligned multi-byte variables. */
+#define _STRING_ARCH_unaligned 1
+
+
+/* We only provide optimizations if the user selects them and if
+ GNU CC is used. */
+#if !defined __NO_STRING_INLINES && defined __USE_STRING_INLINES \
+ && defined __GNUC__ && __GNUC__ >= 2
#ifdef __cplusplus
# define __STRING_INLINE inline
@@ -30,6 +36,13 @@
# define __STRING_INLINE extern __inline
#endif
+/* The macros are used in some of the optimized implementations below. */
+#define __STRING_SMALL_GET16(src, idx) \
+ (((src)[idx + 1] << 8) | (src)[idx])
+#define __STRING_SMALL_GET32(src, idx) \
+ ((((src)[idx + 3] << 8 | (src)[idx + 2]) << 8 \
+ | (src)[idx + 1]) << 8 | (src)[idx])
+
/* Copy N bytes of SRC to DEST. */
#define _HAVE_STRING_ARCH_memcpy 1
@@ -355,9 +368,59 @@ __strlen_g (__const char *__str)
#define _HAVE_STRING_ARCH_strcpy 1
#define strcpy(dest, src) \
(__extension__ (__builtin_constant_p (src) \
- ? (char *) memcpy (dest, src, strlen (src) + 1) \
+ ? (sizeof (src[0]) == 1 && strlen (src) + 1 <= 8 \
+ ? __strcpy_small (dest, src, strlen (src) + 1) \
+ : (char *) memcpy (dest, src, strlen (src) + 1)) \
: __strcpy_g (dest, src)))
+# define __strcpy_small(dest, src, srclen) \
+ (__extension__ ({ char *__retval = (dest); \
+ char *__cp = __retval; \
+ switch (srclen) \
+ { \
+ case 1: \
+ *((unsigned char *) __cp) = '\0'; \
+ break; \
+ case 2: \
+ *((__uint16_t *) __cp) = \
+ __STRING_SMALL_GET16 (src, 0); \
+ break; \
+ case 3: \
+ *((__uint16_t *) __cp)++ = \
+ __STRING_SMALL_GET16 (src, 0); \
+ *((unsigned char *) __cp) = '\0'; \
+ break; \
+ case 4: \
+ *((__uint32_t *) __cp) = \
+ __STRING_SMALL_GET32 (src, 0); \
+ break; \
+ case 5: \
+ *((__uint32_t *) __cp)++ = \
+ __STRING_SMALL_GET32 (src, 0); \
+ *((unsigned char *) __cp) = '\0'; \
+ break; \
+ case 6: \
+ *((__uint32_t *) __cp)++ = \
+ __STRING_SMALL_GET32 (src, 0); \
+ *((__uint16_t *) __cp) = \
+ __STRING_SMALL_GET16 (src, 4); \
+ break; \
+ case 7: \
+ *((__uint32_t *) __cp)++ = \
+ __STRING_SMALL_GET32 (src, 0); \
+ *((__uint16_t *) __cp)++ = \
+ __STRING_SMALL_GET16 (src, 4); \
+ *((unsigned char *) __cp) = '\0'; \
+ break; \
+ case 8: \
+ *((__uint32_t *) __cp)++ = \
+ __STRING_SMALL_GET32 (src, 0); \
+ *((__uint32_t *) __cp) = \
+ __STRING_SMALL_GET32 (src, 4); \
+ break; \
+ } \
+ __retval; }))
+
__STRING_INLINE char *
__strcpy_g (char *__dest, __const char *__src)
{
@@ -398,43 +461,56 @@ __strcpy_g (char *__dest, __const char *__src)
/* In glibc itself we use this symbol for namespace reasons. */
# define stpcpy(dest, src) __stpcpy (dest, src)
-__STRING_INLINE char *
-__stpcpy_small (char *__dest, __const char __src[], size_t __srclen)
-{
- register char *__tmp = __dest;
- switch (__srclen)
- {
- case 7:
- *((unsigned short int *) __tmp)++ = *((unsigned short int *) __src)++;
- case 5:
- *((unsigned int *) __tmp)++ = *((unsigned int *) __src)++;
- *((unsigned char *) __tmp) = '\0';
- return __tmp;
-
- case 8:
- *((unsigned int *) __tmp)++ = *((unsigned int *) __src)++;
- case 4:
- *((unsigned int *) __tmp) = *((unsigned int *) __src);
- return __tmp + 3;
-
- case 6:
- *((unsigned int *) __tmp)++ = *((unsigned int *) __src)++;
- case 2:
- *((unsigned short int *) __tmp) = *((unsigned short int *) __src);
- return __tmp + 1;
-
- case 3:
- *((unsigned short int *) __tmp)++ = *((unsigned short int *) __src)++;
- case 1:
- *((unsigned char *) __tmp) = '\0';
- return __tmp;
-
- default:
- break;
- }
- /* This should never happen. */
- return NULL;
-}
+# define __stpcpy_small(dest, src, srclen) \
+ (__extension__ ({ char *__cp = (dest); \
+ switch (srclen) \
+ { \
+ case 1: \
+ *((unsigned char *) __cp) = '\0'; \
+ break; \
+ case 2: \
+ *((__uint16_t *) __cp) = \
+ __STRING_SMALL_GET16 (src, 0); \
+ ++cp; \
+ break; \
+ case 3: \
+ *((__uint16_t *) __cp)++ = \
+ __STRING_SMALL_GET16 (src, 0); \
+ *((unsigned char *) __cp) = '\0'; \
+ break; \
+ case 4: \
+ *((__uint32_t *) __cp) = \
+ __STRING_SMALL_GET32 (src, 0); \
+ cp += 3; \
+ break; \
+ case 5: \
+ *((__uint32_t *) __cp)++ = \
+ __STRING_SMALL_GET32 (src, 0); \
+ *((unsigned char *) __cp) = '\0'; \
+ break; \
+ case 6: \
+ *((__uint32_t *) __cp)++ = \
+ __STRING_SMALL_GET32 (src, 0); \
+ *((__uint16_t *) __cp) = \
+ __STRING_SMALL_GET16 (src, 4); \
+ ++cp; \
+ break; \
+ case 7: \
+ *((__uint32_t *) __cp)++ = \
+ __STRING_SMALL_GET32 (src, 0); \
+ *((__uint16_t *) __cp)++ = \
+ __STRING_SMALL_GET16 (src, 4); \
+ *((unsigned char *) __cp) = '\0'; \
+ break; \
+ case 8: \
+ *((__uint32_t *) __cp)++ = \
+ __STRING_SMALL_GET32 (src, 0); \
+ *((__uint32_t *) __cp) = \
+ __STRING_SMALL_GET32 (src, 4); \
+ cp += 3; \
+ break; \
+ } \
+ __cp; }))
__STRING_INLINE char *
__mempcpy_by4 (char *__dest, __const char *__src, size_t __srclen)
@@ -1458,4 +1534,4 @@ __strstr_g (__const char *__haystack, __const char *__needle)
#undef __STRING_INLINE
-#endif /* GNU CC */
+#endif /* use string inlines && GNU CC */
diff --git a/sysdeps/i386/i586/bzero.S b/sysdeps/i386/i586/bzero.S
index 2c75103492..84d2f709c1 100644
--- a/sysdeps/i386/i586/bzero.S
+++ b/sysdeps/i386/i586/bzero.S
@@ -1,2 +1,3 @@
-#define memset bzero
+#define memset __bzero
#include <sysdeps/i386/i586/memset.S>
+weak_alias (__bzero, bzero)
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-18 19:45:29 +0000