If enabled, the memcpy function is linked
into L1 instruction memory. (less latency)
+config STRCMP_L1
+ bool "locate strcmp function in L1 Memory"
+ default y
+ help
+ If enabled, the strcmp function is linked
+ into L1 instruction memory (less latency).
+
+config STRNCMP_L1
+ bool "locate strncmp function in L1 Memory"
+ default y
+ help
+ If enabled, the strncmp function is linked
+ into L1 instruction memory (less latency).
+
+config STRCPY_L1
+ bool "locate strcpy function in L1 Memory"
+ default y
+ help
+ If enabled, the strcpy function is linked
+ into L1 instruction memory (less latency).
+
+config STRNCPY_L1
+ bool "locate strncpy function in L1 Memory"
+ default y
+ help
+ If enabled, the strncpy function is linked
+ into L1 instruction memory (less latency).
+
config SYS_BFIN_SPINLOCK_L1
bool "Locate sys_bfin_spinlock function in L1 Memory"
default y
#ifdef __KERNEL__ /* only set these up for kernel code */
#define __HAVE_ARCH_STRCPY
-extern inline char *strcpy(char *dest, const char *src)
-{
- char *xdest = dest;
- char temp = 0;
-
- __asm__ __volatile__ (
- "1:"
- "%2 = B [%1++] (Z);"
- "B [%0++] = %2;"
- "CC = %2;"
- "if cc jump 1b (bp);"
- : "+&a" (dest), "+&a" (src), "=&d" (temp)
- :
- : "memory", "CC");
-
- return xdest;
-}
+extern char *strcpy(char *dest, const char *src);
#define __HAVE_ARCH_STRNCPY
-extern inline char *strncpy(char *dest, const char *src, size_t n)
-{
- char *xdest = dest;
- char temp = 0;
-
- if (n == 0)
- return xdest;
-
- __asm__ __volatile__ (
- "1:"
- "%3 = B [%1++] (Z);"
- "B [%0++] = %3;"
- "CC = %3;"
- "if ! cc jump 2f;"
- "%2 += -1;"
- "CC = %2 == 0;"
- "if ! cc jump 1b (bp);"
- "jump 4f;"
- "2:"
- /* if src is shorter than n, we need to null pad bytes now */
- "%3 = 0;"
- "3:"
- "%2 += -1;"
- "CC = %2 == 0;"
- "if cc jump 4f;"
- "B [%0++] = %3;"
- "jump 3b;"
- "4:"
- : "+&a" (dest), "+&a" (src), "+&da" (n), "=&d" (temp)
- :
- : "memory", "CC");
-
- return xdest;
-}
+extern char *strncpy(char *dest, const char *src, size_t n);
#define __HAVE_ARCH_STRCMP
-extern inline int strcmp(const char *cs, const char *ct)
-{
- /* need to use int's here so the char's in the assembly don't get
- * sign extended incorrectly when we don't want them to be
- */
- int __res1, __res2;
-
- __asm__ __volatile__ (
- "1:"
- "%2 = B[%0++] (Z);" /* get *cs */
- "%3 = B[%1++] (Z);" /* get *ct */
- "CC = %2 == %3;" /* compare a byte */
- "if ! cc jump 2f;" /* not equal, break out */
- "CC = %2;" /* at end of cs? */
- "if cc jump 1b (bp);" /* no, keep going */
- "jump.s 3f;" /* strings are equal */
- "2:"
- "%2 = %2 - %3;" /* *cs - *ct */
- "3:"
- : "+&a" (cs), "+&a" (ct), "=&d" (__res1), "=&d" (__res2)
- :
- : "memory", "CC");
-
- return __res1;
-}
+extern int strcmp(const char *cs, const char *ct);
#define __HAVE_ARCH_STRNCMP
-extern inline int strncmp(const char *cs, const char *ct, size_t count)
-{
- /* need to use int's here so the char's in the assembly don't get
- * sign extended incorrectly when we don't want them to be
- */
- int __res1, __res2;
-
- if (!count)
- return 0;
-
- __asm__ __volatile__ (
- "1:"
- "%3 = B[%0++] (Z);" /* get *cs */
- "%4 = B[%1++] (Z);" /* get *ct */
- "CC = %3 == %4;" /* compare a byte */
- "if ! cc jump 3f;" /* not equal, break out */
- "CC = %3;" /* at end of cs? */
- "if ! cc jump 4f;" /* yes, all done */
- "%2 += -1;" /* no, adjust count */
- "CC = %2 == 0;"
- "if ! cc jump 1b;" /* more to do, keep going */
- "2:"
- "%3 = 0;" /* strings are equal */
- "jump.s 4f;"
- "3:"
- "%3 = %3 - %4;" /* *cs - *ct */
- "4:"
- : "+&a" (cs), "+&a" (ct), "+&da" (count), "=&d" (__res1), "=&d" (__res2)
- :
- : "memory", "CC");
-
- return __res1;
-}
+extern int strncmp(const char *cs, const char *ct, size_t count);
#define __HAVE_ARCH_MEMSET
extern void *memset(void *s, int c, size_t count);
EXPORT_SYMBOL(memchr);
/*
+ * Because string functions are both inline and exported functions and
+ * folder arch/blackfin/lib is configured as a library path in Makefile,
+ * symbols exported in folder lib is not linked into built-in.o but
+ * inlined only. In order to export string symbols to kernel module
+ * properly, they should be exported here.
+ */
+EXPORT_SYMBOL(strcpy);
+EXPORT_SYMBOL(strncpy);
+EXPORT_SYMBOL(strcmp);
+EXPORT_SYMBOL(strncmp);
+
+/*
* libgcc functions - functions that are used internally by the
* compiler... (prototypes are not correct though, but that
* doesn't really matter since they're not versioned).
--- /dev/null
+/*
+ * Copyright 2005-2010 Analog Devices Inc.
+ *
+ * Licensed under the ADI BSD license or the GPL-2 (or later)
+ */
+
+#include <linux/linkage.h>
+
+/* void *strcmp(char *s1, const char *s2);
+ * R0 = address (s1)
+ * R1 = address (s2)
+ *
+ * Returns an integer less than, equal to, or greater than zero if s1
+ * (or the first n bytes thereof) is found, respectively, to be less
+ * than, to match, or be greater than s2.
+ */
+
+#ifdef CONFIG_STRCMP_L1
+.section .l1.text
+#else
+.text
+#endif
+
+.align 2
+
+ENTRY(_strcmp)
+ P0 = R0 ; /* s1 */
+ P1 = R1 ; /* s2 */
+
+1:
+ R0 = B[P0++] (Z); /* get *s1 */
+ R1 = B[P1++] (Z); /* get *s2 */
+ CC = R0 == R1; /* compare a byte */
+ if ! cc jump 2f; /* not equal, break out */
+ CC = R0; /* at end of s1? */
+ if cc jump 1b (bp); /* no, keep going */
+ jump.s 3f; /* strings are equal */
+2:
+ R0 = R0 - R1; /* *s1 - *s2 */
+3:
+ RTS;
+
+ENDPROC(_strcmp)
+++ /dev/null
-/*
- * Provide symbol in case str func is not inlined.
- *
- * Copyright (c) 2006-2007 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#define strcmp __inline_strcmp
-#include <asm/string.h>
-#undef strcmp
-
-#include <linux/module.h>
-
-int strcmp(const char *dest, const char *src)
-{
- return __inline_strcmp(dest, src);
-}
-EXPORT_SYMBOL(strcmp);
--- /dev/null
+/*
+ * Copyright 2005-2010 Analog Devices Inc.
+ *
+ * Licensed under the ADI BSD license or the GPL-2 (or later)
+ */
+
+#include <linux/linkage.h>
+
+/* void *strcpy(char *dest, const char *src);
+ * R0 = address (dest)
+ * R1 = address (src)
+ *
+ * Returns a pointer to the destination string dest
+ */
+
+#ifdef CONFIG_STRCPY_L1
+.section .l1.text
+#else
+.text
+#endif
+
+.align 2
+
+ENTRY(_strcpy)
+ P0 = R0 ; /* dst*/
+ P1 = R1 ; /* src*/
+
+1:
+ R1 = B [P1++] (Z);
+ B [P0++] = R1;
+ CC = R1;
+ if cc jump 1b (bp);
+ RTS;
+
+ENDPROC(_strcpy)
+++ /dev/null
-/*
- * Provide symbol in case str func is not inlined.
- *
- * Copyright (c) 2006-2007 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#define strcpy __inline_strcpy
-#include <asm/string.h>
-#undef strcpy
-
-#include <linux/module.h>
-
-char *strcpy(char *dest, const char *src)
-{
- return __inline_strcpy(dest, src);
-}
-EXPORT_SYMBOL(strcpy);
--- /dev/null
+/*
+ * Copyright 2005-2010 Analog Devices Inc.
+ *
+ * Licensed under the ADI BSD license or the GPL-2 (or later)
+ */
+
+#include <linux/linkage.h>
+
+/* void *strncpy(char *s1, const char *s2, size_t n);
+ * R0 = address (dest)
+ * R1 = address (src)
+ * R2 = size (n)
+ * Returns a pointer to the destination string dest
+ */
+
+#ifdef CONFIG_STRNCMP_L1
+.section .l1.text
+#else
+.text
+#endif
+
+.align 2
+
+ENTRY(_strncmp)
+ CC = R2 == 0;
+ if CC JUMP 5f;
+
+ P0 = R0 ; /* s1 */
+ P1 = R1 ; /* s2 */
+1:
+ R0 = B[P0++] (Z); /* get *s1 */
+ R1 = B[P1++] (Z); /* get *s2 */
+ CC = R0 == R1; /* compare a byte */
+ if ! cc jump 3f; /* not equal, break out */
+ CC = R0; /* at end of s1? */
+ if ! cc jump 4f; /* yes, all done */
+ R2 += -1; /* no, adjust count */
+ CC = R2 == 0;
+ if ! cc jump 1b (bp); /* more to do, keep going */
+2:
+ R0 = 0; /* strings are equal */
+ jump.s 4f;
+3:
+ R0 = R0 - R1; /* *s1 - *s2 */
+4:
+ RTS;
+
+5:
+ R0 = 0;
+ RTS;
+
+ENDPROC(_strncmp)
+++ /dev/null
-/*
- * Provide symbol in case str func is not inlined.
- *
- * Copyright (c) 2006-2007 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#define strncmp __inline_strncmp
-#include <asm/string.h>
-#include <linux/module.h>
-#undef strncmp
-
-int strncmp(const char *cs, const char *ct, size_t count)
-{
- return __inline_strncmp(cs, ct, count);
-}
-EXPORT_SYMBOL(strncmp);
--- /dev/null
+/*
+ * Copyright 2005-2010 Analog Devices Inc.
+ *
+ * Licensed under the ADI BSD license or the GPL-2 (or later)
+ */
+
+#include <linux/linkage.h>
+
+/* void *strncpy(char *dest, const char *src, size_t n);
+ * R0 = address (dest)
+ * R1 = address (src)
+ * R2 = size
+ * Returns a pointer to the destination string dest
+ */
+
+#ifdef CONFIG_STRNCPY_L1
+.section .l1.text
+#else
+.text
+#endif
+
+.align 2
+
+ENTRY(_strncpy)
+ CC = R2 == 0;
+ if CC JUMP 4f;
+ P0 = R0 ; /* dst*/
+ P1 = R1 ; /* src*/
+
+1:
+ R1 = B [P1++] (Z);
+ B [P0++] = R1;
+ CC = R1;
+ if ! cc jump 2f;
+ R2 += -1;
+ CC = R2 == 0;
+ if ! cc jump 1b (bp);
+ jump 4f;
+2:
+ /* if src is shorter than n, we need to null pad bytes in dest */
+ R1 = 0;
+3:
+ R2 += -1;
+ CC = R2 == 0;
+ if cc jump 4f;
+ B [P0++] = R1;
+ jump 3b;
+
+4:
+ RTS;
+
+ENDPROC(_strncpy)
+++ /dev/null
-/*
- * Provide symbol in case str func is not inlined.
- *
- * Copyright (c) 2006-2007 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#define strncpy __inline_strncpy
-#include <asm/string.h>
-#undef strncpy
-
-#include <linux/module.h>
-
-char *strncpy(char *dest, const char *src, size_t n)
-{
- return __inline_strncpy(dest, src, n);
-}
-EXPORT_SYMBOL(strncpy);
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff