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-rw-r--r--sysdeps/i386/i486/strcat.S20
-rw-r--r--sysdeps/i386/strsep.S3
-rw-r--r--sysdeps/i386/strtok.S329
-rw-r--r--sysdeps/i386/strtok_r.S3
4 files changed, 345 insertions, 10 deletions
diff --git a/sysdeps/i386/i486/strcat.S b/sysdeps/i386/i486/strcat.S
index e3d2181..081a797 100644
--- a/sysdeps/i386/i486/strcat.S
+++ b/sysdeps/i386/i486/strcat.S
@@ -1,6 +1,6 @@
/* strcat(dest, src) -- Append SRC on the end of DEST.
For Intel 80x86, x>=4.
-Copyright (C) 1994, 1995 Free Software Foundation, Inc.
+Copyright (C) 1994, 1995, 1996 Free Software Foundation, Inc.
Contributed by Ulrich Drepper <drepper@ipd.info.uni-karlsruhe.de>.
Optimised a little by Alan Modra <Alan@SPRI.Levels.UniSA.Edu.Au>
This file is part of the GNU C Library.
@@ -40,19 +40,19 @@ ENTRY (strcat)
jz L8 /* yes => return */
/* Test the first bytes separately until destination is aligned. */
- testb $3, %edx /* destination pointer aligned? */
+ testl $3, %edx /* destination pointer aligned? */
jz L1 /* yes => begin scan loop */
testb $0xff, (%edx) /* is end of string? */
jz L2 /* yes => start appending */
incl %edx /* increment source pointer */
- testb $3, %edx /* destination pointer aligned? */
+ testl $3, %edx /* destination pointer aligned? */
jz L1 /* yes => begin scan loop */
testb $0xff, (%edx) /* is end of string? */
jz L2 /* yes => start appending */
incl %edx /* increment source pointer */
- testb $3, %edx /* destination pointer aligned? */
+ testl $3, %edx /* destination pointer aligned? */
jz L1 /* yes => begin scan loop */
testb $0xff, (%edx) /* is end of string? */
jz L2 /* yes => start appending */
@@ -152,27 +152,27 @@ L3: testb %al, %al /* is first byte NUL? */
L2: subl %ecx, %edx /* reduce number of loop variants */
/* Now we have to align the source pointer. */
- testb $3, %ecx /* pointer correctly aligned? */
+ testl $3, %ecx /* pointer correctly aligned? */
jz L29 /* yes => start copy loop */
movb (%ecx), %al /* get first byte */
movb %al, (%ecx,%edx) /* and store it */
- andl %al, %al /* is byte NUL? */
+ andb %al, %al /* is byte NUL? */
jz L8 /* yes => return */
incl %ecx /* increment pointer */
- testb $3, %ecx /* pointer correctly aligned? */
+ testl $3, %ecx /* pointer correctly aligned? */
jz L29 /* yes => start copy loop */
movb (%ecx), %al /* get first byte */
movb %al, (%ecx,%edx) /* and store it */
- andl %al, %al /* is byte NUL? */
+ andb %al, %al /* is byte NUL? */
jz L8 /* yes => return */
incl %ecx /* increment pointer */
- testb $3, %ecx /* pointer correctly aligned? */
+ testl $3, %ecx /* pointer correctly aligned? */
jz L29 /* yes => start copy loop */
movb (%ecx), %al /* get first byte */
movb %al, (%ecx,%edx) /* and store it */
- andl %al, %al /* is byte NUL? */
+ andb %al, %al /* is byte NUL? */
jz L8 /* yes => return */
incl %ecx /* increment pointer */
diff --git a/sysdeps/i386/strsep.S b/sysdeps/i386/strsep.S
new file mode 100644
index 0000000..8c425dd
--- /dev/null
+++ b/sysdeps/i386/strsep.S
@@ -0,0 +1,3 @@
+#define FUNCTION strsep
+#define USE_AS_STRSEP 1
+#include <sysdeps/i386/strtok.S>
diff --git a/sysdeps/i386/strtok.S b/sysdeps/i386/strtok.S
new file mode 100644
index 0000000..28845e0
--- /dev/null
+++ b/sysdeps/i386/strtok.S
@@ -0,0 +1,329 @@
+/* strtok (str, delim) -- Return next DELIM separated token from STR.
+For Intel 80x86, x>=3.
+Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#include <errnos.h>
+#include <sysdep.h>
+
+/* This file can be used for three variants of the strtok function:
+
+ strtok:
+ INPUT PARAMETER:
+ str (sp + 4)
+ delim (sp + 8)
+
+ strtok_r:
+ INPUT PARAMETER:
+ str (sp + 4)
+ delim (sp + 8)
+ save_ptr (sp + 12)
+
+ strsep:
+ INPUT PARAMETERS
+ str_ptr (sp + 4)
+ delim (sp + 8)
+
+ We do a common implementation here. */
+
+#if !defined (USE_AS_STRTOK_R) && !defined (USE_AS_STRSEP)
+ .bss
+ .local save_ptr
+ ASM_TYPE_DIRECTIVE (save_ptr, @object)
+ .size save_ptr, 4
+save_ptr:
+ .space 4
+
+#define FUNCTION strtok
+#endif
+
+ /* We use the possibility to do some more initialization
+ for the strtok implementation. */
+ .text
+Lillegal_argument:
+#ifndef PIC
+ movl $EINVAL, C_SYMBOL_NAME(errno)
+ xorl %eax, %eax
+#else
+# if defined (USE_AS_STRTOK_R) || defined (USE_AS_STRSEP)
+ pushl %ebx /* Save PIC register. */
+ call Lhere2
+Lhere2: popl %ebx
+ addl $_GLOBAL_OFFSET_TABLE_+[.-Lhere2], %ebx
+# endif
+ movl errno@GOT(%ebx), %ebx
+ movl $EINVAL, (%ebx)
+ xorl %eax, %eax
+ popl %ebx
+#endif
+ ret
+
+
+ENTRY (FUNCTION)
+
+ movl 4(%esp), %edx /* Get start of string. */
+ movl 8(%esp), %eax /* Get start of delimiter set. */
+
+#ifdef USE_AS_STRSEP
+ /* %EDX does not yet contain the string starting point. Only
+ a pointer to the location where it is stored. */
+ movl (%edx), %edx
+#else
+# if !defined (USE_AS_STRTOK_R) && defined (PIC)
+ pushl %ebx /* Save PIC register. */
+ call Lhere
+Lhere: popl %ebx
+ addl $_GLOBAL_OFFSET_TABLE_+[.-Lhere], %ebx
+# endif
+
+ /* If the pointer is NULL we have to use the stored value of
+ the last run. */
+ cmpl $0, %edx
+ jne L0
+
+# ifdef USE_AS_STRTOK_R
+ /* The value is stored in the third argument. */
+ movl 12(%esp), %edx
+ movl (%edx), %edx
+# else
+ /* The value is in the local variable defined above. But
+ we have to take care for PIC code. */
+# ifndef PIC
+ movl save_ptr, %edx
+# else
+ movl save_ptr@GOTOFF(%ebx), %edx
+# endif
+# endif
+#endif
+
+ /* Compare whether pointer is NULL. We are tolerant here
+ because the C function do the same. */
+ cmpl $0, %edx
+ je Lillegal_argument
+
+#ifndef USE_AS_STRSEP
+L0:
+#endif
+ /* First we create a table with flags for all possible characters.
+ For the ASCII (7bit/8bit) or ISO-8859-X character sets which are
+ supported by the C string functions we have 256 characters.
+ Before inserting marks for the stop characters we clear the whole
+ table. The unrolled form is much faster than a loop. */
+ xorl %ecx, %ecx /* %ecx = 0 !!! */
+
+ pushl %ecx /* make a 256 bytes long block filled with 0 */
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl %ecx
+ pushl $0 /* These immediate values make the label 2 */
+ pushl $0 /* to be aligned on a 16 byte boundary to */
+ pushl $0 /* get a better performance of the loop. */
+ pushl $0
+ pushl $0
+ pushl $0
+
+/* For understanding the following code remember that %ecx == 0 now.
+ Although all the following instruction only modify %cl we always
+ have a correct zero-extended 32-bit value in %ecx. */
+
+L2: movb (%eax), %cl /* get byte from stopset */
+ testb %cl, %cl /* is NUL char? */
+ jz L1 /* yes => start compare loop */
+ movb %cl, (%esp,%ecx) /* set corresponding byte in stopset table */
+
+ movb 1(%eax), %cl /* get byte from stopset */
+ testb $0xff, %cl /* is NUL char? */
+ jz L1 /* yes => start compare loop */
+ movb %cl, (%esp,%ecx) /* set corresponding byte in stopset table */
+
+ movb 2(%eax), %cl /* get byte from stopset */
+ testb $0xff, %cl /* is NUL char? */
+ jz L1 /* yes => start compare loop */
+ movb %cl, (%esp,%ecx) /* set corresponding byte in stopset table */
+
+ movb 3(%eax), %cl /* get byte from stopset */
+ addl $4, %eax /* increment stopset pointer */
+ movb %cl, (%esp,%ecx) /* set corresponding byte in stopset table */
+ testb $0xff, %cl /* is NUL char? */
+ jnz L2 /* no => process next dword from stopset */
+
+L1: leal -4(%edx), %eax /* prepare loop */
+
+ /* We use a neat trick for the following loop. Normally we would
+ have to test for two termination conditions
+ 1. a character in the stopset was found
+ and
+ 2. the end of the string was found
+ But as a sign that the chracter is in the stopset we store its
+ value in the table. But the value of NUL is NUL so the loop
+ terminates for NUL in every case. */
+
+L3: addl $4, %eax /* adjust pointer for full loop round */
+
+ movb (%eax), %cl /* get byte from string */
+ testb %cl, (%esp,%ecx) /* is it contained in stopset? */
+ jz L4 /* no => start of token */
+
+ movb 1(%eax), %cl /* get byte from string */
+ testb %cl, (%esp,%ecx) /* is it contained in stopset? */
+ jz L5 /* no => start of token */
+
+ movb 2(%eax), %cl /* get byte from string */
+ testb %cl, (%esp,%ecx) /* is it contained in stopset? */
+ jz L6 /* no => start of token */
+
+ movb 3(%eax), %cl /* get byte from string */
+ testb %cl, (%esp,%ecx) /* is it contained in stopset? */
+ jnz L3 /* yes => start of loop */
+
+ incl %eax /* adjust pointer */
+L6: incl %eax
+L5: incl %eax
+
+ /* Now we have to terminate the string. */
+
+L4: leal -4(%eax), %edx /* We use %EDX for the next run. */
+
+L7: addl $4, %edx /* adjust pointer for full loop round */
+
+ movb (%edx), %cl /* get byte from string */
+ cmpb %cl, (%esp,%ecx) /* is it contained in skipset? */
+ je L8 /* yes => return */
+
+ movb 1(%edx), %cl /* get byte from string */
+ cmpb %cl, (%esp,%ecx) /* is it contained in skipset? */
+ je L9 /* yes => return */
+
+ movb 2(%edx), %cl /* get byte from string */
+ cmpb %cl, (%esp,%ecx) /* is it contained in skipset? */
+ je L10 /* yes => return */
+
+ movb 3(%edx), %cl /* get byte from string */
+ cmpb %cl, (%esp,%ecx) /* is it contained in skipset? */
+ jne L7 /* no => start loop again */
+
+ incl %edx /* adjust pointer */
+L10: incl %edx
+L9: incl %edx
+
+L8: /* Remove the stopset table. */
+ addl $256, %esp
+
+ cmpl %eax, %edx
+ je LreturnNULL /* There was no token anymore. */
+
+ movb $0, (%edx) /* Terminate string. */
+
+ /* Are we at end of string? */
+ cmpb $0, %cl
+ je L11
+
+ incl %edx
+L11:
+
+ /* Store the pointer to the next character. */
+#ifdef USE_AS_STRTOK_R
+ movl 12(%esp), %ecx
+ movl %edx, (%ecx)
+#elif USE_AS_STRSEP
+ movl 4(%esp), %ecx
+ movl %edx, (%ecx)
+#else
+# ifndef PIC
+ movl %edx, save_ptr
+# else
+ movl %edx, save_ptr@GOTOFF(%ebx)
+ popl %ebx
+# endif
+#endif
+ ret
+
+LreturnNULL:
+ xorl %eax, %eax
+
+ /* Store NULL as pointer to the next character. */
+#ifdef USE_AS_STRTOK_R
+ movl 12(%esp), %ecx
+ movl %eax, (%ecx)
+#elif USE_AS_STRSEP
+ movl 4(%esp), %ecx
+ movl %eax, (%ecx)
+#else
+# ifndef PIC
+ movl %eax, save_ptr
+# else
+ movl %eax, save_ptr@GOTOFF(%ebx)
+ popl %ebx
+# endif
+#endif
+ ret
diff --git a/sysdeps/i386/strtok_r.S b/sysdeps/i386/strtok_r.S
new file mode 100644
index 0000000..297ba28
--- /dev/null
+++ b/sysdeps/i386/strtok_r.S
@@ -0,0 +1,3 @@
+#define FUNCTION strtok_r
+#define USE_AS_STRTOK_R 1
+#include <sysdeps/i386/strtok.S>
generated by cgit v1.1 at 2024-11-05 02:17:09 +0000