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-rw-r--r--libc/string/x86_64/Makefile31
-rw-r--r--libc/string/x86_64/_glibc_inc.h33
-rw-r--r--libc/string/x86_64/bzero.S3
-rw-r--r--libc/string/x86_64/memcpy.S95
-rw-r--r--libc/string/x86_64/memset.S138
-rw-r--r--libc/string/x86_64/stpcpy.S6
-rw-r--r--libc/string/x86_64/strcat.S256
-rw-r--r--libc/string/x86_64/strchr.S287
-rw-r--r--libc/string/x86_64/strcmp.S41
-rw-r--r--libc/string/x86_64/strcpy.S153
-rw-r--r--libc/string/x86_64/strcspn.S123
-rw-r--r--libc/string/x86_64/string.c1454
-rw-r--r--libc/string/x86_64/strlen.S135
-rw-r--r--libc/string/x86_64/strpbrk.S2
-rw-r--r--libc/string/x86_64/strspn.S114
15 files changed, 2871 insertions, 0 deletions
diff --git a/libc/string/x86_64/Makefile b/libc/string/x86_64/Makefile
new file mode 100644
index 000000000..2215a6025
--- /dev/null
+++ b/libc/string/x86_64/Makefile
@@ -0,0 +1,31 @@
+# Makefile for uClibc
+#
+# Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org>
+#
+# Licensed under the GNU Library General Public License version 2 or later.
+# See the COPYING.LIB file in the toplevel for more information.
+
+TOPDIR=../../../
+include $(TOPDIR)Rules.mak
+
+CSRCS = $(wildcard *.c)
+COBJS = $(patsubst %.c,%.o,$(CSRCS))
+
+SSRCS = $(wildcard *.S)
+SOBJS = $(patsubst %.S,%.o,$(SSRCS))
+
+OBJS = $(COBJS) $(SOBJS)
+
+OBJ_LIST = ../../obj.string.$(TARGET_ARCH)
+
+all: $(OBJ_LIST)
+
+$(OBJ_LIST): $(OBJS)
+ echo $(patsubst %, string/$(TARGET_ARCH)/%, $(OBJS)) > $(OBJ_LIST)
+
+$(COBJS): %.o : %.c
+ $(CC) $(CFLAGS) -c $< -o $@
+ $(STRIPTOOL) -x -R .note -R .comment $*.o
+
+clean:
+ $(RM) *.[oa] *~ core
diff --git a/libc/string/x86_64/_glibc_inc.h b/libc/string/x86_64/_glibc_inc.h
new file mode 100644
index 000000000..f14b23c94
--- /dev/null
+++ b/libc/string/x86_64/_glibc_inc.h
@@ -0,0 +1,33 @@
+/*
+ * Setup some glibc defines so we can just drop in the
+ * asm files from glibc without any modification.
+ */
+
+#include <features.h>
+#include <bits/wordsize.h>
+
+#if __WORDSIZE == 32
+# define ENTRY_ALIGN 4
+#else
+# define ENTRY_ALIGN 2
+#endif
+
+#define ENTRY(sym) \
+ .global sym; \
+ .align ENTRY_ALIGN; \
+ .type sym,%function; \
+ sym:
+
+#define BP_SYM(sym) sym
+
+#define L(sym) LOC(sym)
+#define LOC(sym) \
+ .L ## sym
+
+#define END(sym) \
+ .size sym,.-sym;
+
+#undef weak_alias
+#define weak_alias(sym, alias) \
+ .weak alias; \
+ alias = sym;
diff --git a/libc/string/x86_64/bzero.S b/libc/string/x86_64/bzero.S
new file mode 100644
index 000000000..abd252e7b
--- /dev/null
+++ b/libc/string/x86_64/bzero.S
@@ -0,0 +1,3 @@
+#define memset __bzero
+#include "memset.S"
+weak_alias (__bzero, bzero)
diff --git a/libc/string/x86_64/memcpy.S b/libc/string/x86_64/memcpy.S
new file mode 100644
index 000000000..4fa38a640
--- /dev/null
+++ b/libc/string/x86_64/memcpy.S
@@ -0,0 +1,95 @@
+/* Highly optimized version for x86-64.
+ Copyright (C) 1997, 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Based on i586 version contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include "_glibc_inc.h"
+
+/* BEWARE: `#ifdef memcpy' means that memcpy is redefined as `mempcpy',
+ and the return value is the byte after the last one copied in
+ the destination. */
+#define MEMPCPY_P (defined memcpy)
+
+ .text
+#if defined PIC && !defined NOT_IN_libc
+ENTRY (__memcpy_chk)
+ cmpq %rdx, %rcx
+ jb HIDDEN_JUMPTARGET (__chk_fail)
+END (__memcpy_chk)
+#endif
+ENTRY (BP_SYM (memcpy))
+ /* Cutoff for the big loop is a size of 32 bytes since otherwise
+ the loop will never be entered. */
+ cmpq $32, %rdx
+ movq %rdx, %rcx
+#if !MEMPCPY_P
+ movq %rdi, %r10 /* Save value. */
+#endif
+
+ /* We need this in any case. */
+ cld
+
+ jbe 1f
+
+ /* Align destination. */
+ movq %rdi, %rax
+ negq %rax
+ andq $7, %rax
+ subq %rax, %rcx
+ xchgq %rax, %rcx
+
+ rep; movsb
+
+ movq %rax, %rcx
+ subq $32, %rcx
+ js 2f
+
+ .p2align 4
+3:
+
+ /* Now correct the loop counter. Please note that in the following
+ code the flags are not changed anymore. */
+ subq $32, %rcx
+
+ movq (%rsi), %rax
+ movq 8(%rsi), %rdx
+ movq 16(%rsi), %r8
+ movq 24(%rsi), %r9
+ movq %rax, (%rdi)
+ movq %rdx, 8(%rdi)
+ movq %r8, 16(%rdi)
+ movq %r9, 24(%rdi)
+
+ leaq 32(%rsi), %rsi
+ leaq 32(%rdi), %rdi
+
+ jns 3b
+
+ /* Correct extra loop counter modification. */
+2: addq $32, %rcx
+1: rep; movsb
+
+#if MEMPCPY_P
+ movq %rdi, %rax /* Set return value. */
+#else
+ movq %r10, %rax /* Set return value. */
+
+#endif
+ ret
+
+END (BP_SYM (memcpy))
diff --git a/libc/string/x86_64/memset.S b/libc/string/x86_64/memset.S
new file mode 100644
index 000000000..d74ec8ccb
--- /dev/null
+++ b/libc/string/x86_64/memset.S
@@ -0,0 +1,138 @@
+/* memset/bzero -- set memory area to CH/0
+ Optimized version for x86-64.
+ Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Jaeger <aj@suse.de>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include "_glibc_inc.h"
+
+/* BEWARE: `#ifdef memset' means that memset is redefined as `bzero' */
+#define BZERO_P (defined memset)
+
+/* This is somehow experimental and could made dependend on the cache
+ size. */
+#define LARGE $120000
+
+ .text
+#if !BZERO_P && defined PIC && !defined NOT_IN_libc
+ENTRY (__memset_chk)
+ cmpq %rdx, %rcx
+ jb HIDDEN_JUMPTARGET (__chk_fail)
+END (__memset_chk)
+#endif
+ENTRY (memset)
+#if BZERO_P
+ mov %rsi,%rdx /* Adjust parameter. */
+ xorl %esi,%esi /* Fill with 0s. */
+#endif
+ cmp $0x7,%rdx /* Check for small length. */
+ mov %rdi,%rcx /* Save ptr as return value. */
+ jbe 7f
+
+#if BZERO_P
+ mov %rsi,%r8 /* Just copy 0. */
+#else
+ /* Populate 8 bit data to full 64-bit. */
+ movabs $0x0101010101010101,%r8
+ movzbl %sil,%eax
+ imul %rax,%r8
+#endif
+ test $0x7,%edi /* Check for alignment. */
+ je 2f
+
+ .p2align 4
+1: /* Align ptr to 8 byte. */
+ mov %sil,(%rcx)
+ dec %rdx
+ inc %rcx
+ test $0x7,%ecx
+ jne 1b
+
+2: /* Check for really large regions. */
+ mov %rdx,%rax
+ shr $0x6,%rax
+ je 4f
+ cmp LARGE, %rdx
+ jae 11f
+
+ .p2align 4
+3: /* Copy 64 bytes. */
+ mov %r8,(%rcx)
+ mov %r8,0x8(%rcx)
+ mov %r8,0x10(%rcx)
+ mov %r8,0x18(%rcx)
+ mov %r8,0x20(%rcx)
+ mov %r8,0x28(%rcx)
+ mov %r8,0x30(%rcx)
+ mov %r8,0x38(%rcx)
+ add $0x40,%rcx
+ dec %rax
+ jne 3b
+
+4: /* Copy final bytes. */
+ and $0x3f,%edx
+ mov %rdx,%rax
+ shr $0x3,%rax
+ je 6f
+
+5: /* First in chunks of 8 bytes. */
+ mov %r8,(%rcx)
+ add $0x8,%rcx
+ dec %rax
+ jne 5b
+6:
+ and $0x7,%edx
+7:
+ test %rdx,%rdx
+ je 9f
+8: /* And finally as bytes (up to 7). */
+ mov %sil,(%rcx)
+ inc %rcx
+ dec %rdx
+ jne 8b
+9:
+#if BZERO_P
+ nop
+#else
+ /* Load result (only if used as memset). */
+ mov %rdi,%rax /* start address of destination is result */
+#endif
+ retq
+
+ .p2align 4
+11: /* Copy 64 bytes without polluting the cache. */
+ /* We could use movntdq %xmm0,(%rcx) here to further
+ speed up for large cases but let's not use XMM registers. */
+ movnti %r8,(%rcx)
+ movnti %r8,0x8(%rcx)
+ movnti %r8,0x10(%rcx)
+ movnti %r8,0x18(%rcx)
+ movnti %r8,0x20(%rcx)
+ movnti %r8,0x28(%rcx)
+ movnti %r8,0x30(%rcx)
+ movnti %r8,0x38(%rcx)
+ add $0x40,%rcx
+ dec %rax
+ jne 11b
+ jmp 4b
+
+END (memset)
+
+#if !BZERO_P && defined PIC && !defined NOT_IN_libc
+strong_alias (__memset_chk, __memset_zero_constant_len_parameter)
+#endif
diff --git a/libc/string/x86_64/stpcpy.S b/libc/string/x86_64/stpcpy.S
new file mode 100644
index 000000000..83294e1a8
--- /dev/null
+++ b/libc/string/x86_64/stpcpy.S
@@ -0,0 +1,6 @@
+#define USE_AS_STPCPY
+#define STRCPY __stpcpy
+
+#include "strcpy.S"
+
+weak_alias (__stpcpy, stpcpy)
diff --git a/libc/string/x86_64/strcat.S b/libc/string/x86_64/strcat.S
new file mode 100644
index 000000000..1106cb4ed
--- /dev/null
+++ b/libc/string/x86_64/strcat.S
@@ -0,0 +1,256 @@
+/* strcat(dest, src) -- Append SRC on the end of DEST.
+ Optimized for x86-64.
+ Copyright (C) 2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Jaeger <aj@suse.de>, 2002.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include "_glibc_inc.h"
+
+
+ .text
+ENTRY (BP_SYM (strcat))
+ movq %rdi, %rcx /* Dest. register. */
+ andl $7, %ecx /* mask alignment bits */
+ movq %rdi, %rax /* Duplicate destination pointer. */
+ movq $0xfefefefefefefeff,%r8
+
+ /* First step: Find end of destination. */
+ jz 4f /* aligned => start loop */
+
+ neg %ecx /* We need to align to 8 bytes. */
+ addl $8,%ecx
+ /* Search the first bytes directly. */
+0: cmpb $0x0,(%rax) /* is byte NUL? */
+ je 2f /* yes => start copy */
+ incq %rax /* increment pointer */
+ decl %ecx
+ jnz 0b
+
+
+
+ /* Now the source is aligned. Scan for NUL byte. */
+ .p2align 4
+4:
+ /* First unroll. */
+ movq (%rax), %rcx /* get double word (= 8 bytes) in question */
+ addq $8,%rax /* adjust pointer for next word */
+ movq %r8, %rdx /* magic value */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jnz 3f /* found NUL => return pointer */
+
+ /* Second unroll. */
+ movq (%rax), %rcx /* get double word (= 8 bytes) in question */
+ addq $8,%rax /* adjust pointer for next word */
+ movq %r8, %rdx /* magic value */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jnz 3f /* found NUL => return pointer */
+
+ /* Third unroll. */
+ movq (%rax), %rcx /* get double word (= 8 bytes) in question */
+ addq $8,%rax /* adjust pointer for next word */
+ movq %r8, %rdx /* magic value */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jnz 3f /* found NUL => return pointer */
+
+ /* Fourth unroll. */
+ movq (%rax), %rcx /* get double word (= 8 bytes) in question */
+ addq $8,%rax /* adjust pointer for next word */
+ movq %r8, %rdx /* magic value */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jz 4b /* no NUL found => continue loop */
+
+ .p2align 4 /* Align, it's a jump target. */
+3: subq $8,%rax /* correct pointer increment. */
+
+ testb %cl, %cl /* is first byte NUL? */
+ jz 2f /* yes => return */
+ incq %rax /* increment pointer */
+
+ testb %ch, %ch /* is second byte NUL? */
+ jz 2f /* yes => return */
+ incq %rax /* increment pointer */
+
+ testl $0x00ff0000, %ecx /* is third byte NUL? */
+ jz 2f /* yes => return pointer */
+ incq %rax /* increment pointer */
+
+ testl $0xff000000, %ecx /* is fourth byte NUL? */
+ jz 2f /* yes => return pointer */
+ incq %rax /* increment pointer */
+
+ shrq $32, %rcx /* look at other half. */
+
+ testb %cl, %cl /* is first byte NUL? */
+ jz 2f /* yes => return */
+ incq %rax /* increment pointer */
+
+ testb %ch, %ch /* is second byte NUL? */
+ jz 2f /* yes => return */
+ incq %rax /* increment pointer */
+
+ testl $0xff0000, %ecx /* is third byte NUL? */
+ jz 2f /* yes => return pointer */
+ incq %rax /* increment pointer */
+
+2:
+ /* Second step: Copy source to destination. */
+
+ movq %rsi, %rcx /* duplicate */
+ andl $7,%ecx /* mask alignment bits */
+ movq %rax, %rdx /* move around */
+ jz 22f /* aligned => start loop */
+
+ neg %ecx /* align to 8 bytes. */
+ addl $8, %ecx
+ /* Align the source pointer. */
+21:
+ movb (%rsi), %al /* Fetch a byte */
+ testb %al, %al /* Is it NUL? */
+ movb %al, (%rdx) /* Store it */
+ jz 24f /* If it was NUL, done! */
+ incq %rsi
+ incq %rdx
+ decl %ecx
+ jnz 21b
+
+ /* Now the sources is aligned. Unfortunatly we cannot force
+ to have both source and destination aligned, so ignore the
+ alignment of the destination. */
+ .p2align 4
+22:
+ /* 1st unroll. */
+ movq (%rsi), %rax /* Read double word (8 bytes). */
+ addq $8, %rsi /* Adjust pointer for next word. */
+ movq %rax, %r9 /* Save a copy for NUL finding. */
+ addq %r8, %r9 /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 23f /* highest byte is NUL => return pointer */
+ xorq %rax, %r9 /* (word+magic)^word */
+ orq %r8, %r9 /* set all non-carry bits */
+ incq %r9 /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+
+ jnz 23f /* found NUL => return pointer */
+
+ movq %rax, (%rdx) /* Write value to destination. */
+ addq $8, %rdx /* Adjust pointer. */
+
+ /* 2nd unroll. */
+ movq (%rsi), %rax /* Read double word (8 bytes). */
+ addq $8, %rsi /* Adjust pointer for next word. */
+ movq %rax, %r9 /* Save a copy for NUL finding. */
+ addq %r8, %r9 /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 23f /* highest byte is NUL => return pointer */
+ xorq %rax, %r9 /* (word+magic)^word */
+ orq %r8, %r9 /* set all non-carry bits */
+ incq %r9 /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+
+ jnz 23f /* found NUL => return pointer */
+
+ movq %rax, (%rdx) /* Write value to destination. */
+ addq $8, %rdx /* Adjust pointer. */
+
+ /* 3rd unroll. */
+ movq (%rsi), %rax /* Read double word (8 bytes). */
+ addq $8, %rsi /* Adjust pointer for next word. */
+ movq %rax, %r9 /* Save a copy for NUL finding. */
+ addq %r8, %r9 /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 23f /* highest byte is NUL => return pointer */
+ xorq %rax, %r9 /* (word+magic)^word */
+ orq %r8, %r9 /* set all non-carry bits */
+ incq %r9 /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+
+ jnz 23f /* found NUL => return pointer */
+
+ movq %rax, (%rdx) /* Write value to destination. */
+ addq $8, %rdx /* Adjust pointer. */
+
+ /* 4th unroll. */
+ movq (%rsi), %rax /* Read double word (8 bytes). */
+ addq $8, %rsi /* Adjust pointer for next word. */
+ movq %rax, %r9 /* Save a copy for NUL finding. */
+ addq %r8, %r9 /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 23f /* highest byte is NUL => return pointer */
+ xorq %rax, %r9 /* (word+magic)^word */
+ orq %r8, %r9 /* set all non-carry bits */
+ incq %r9 /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+
+ jnz 23f /* found NUL => return pointer */
+
+ movq %rax, (%rdx) /* Write value to destination. */
+ addq $8, %rdx /* Adjust pointer. */
+ jmp 22b /* Next iteration. */
+
+ /* Do the last few bytes. %rax contains the value to write.
+ The loop is unrolled twice. */
+ .p2align 4
+23:
+ movb %al, (%rdx) /* 1st byte. */
+ testb %al, %al /* Is it NUL. */
+ jz 24f /* yes, finish. */
+ incq %rdx /* Increment destination. */
+ movb %ah, (%rdx) /* 2nd byte. */
+ testb %ah, %ah /* Is it NUL?. */
+ jz 24f /* yes, finish. */
+ incq %rdx /* Increment destination. */
+ shrq $16, %rax /* Shift... */
+ jmp 23b /* and look at next two bytes in %rax. */
+
+
+24:
+ movq %rdi, %rax /* Source is return value. */
+ retq
+END (BP_SYM (strcat))
diff --git a/libc/string/x86_64/strchr.S b/libc/string/x86_64/strchr.S
new file mode 100644
index 000000000..b84b012b2
--- /dev/null
+++ b/libc/string/x86_64/strchr.S
@@ -0,0 +1,287 @@
+/* strchr (str, ch) -- Return pointer to first occurrence of CH in STR.
+ For AMD x86-64.
+ Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include "_glibc_inc.h"
+
+
+ .text
+ENTRY (BP_SYM (strchr))
+
+ /* Before we start with the main loop we process single bytes
+ until the source pointer is aligned. This has two reasons:
+ 1. aligned 64-bit memory access is faster
+ and (more important)
+ 2. we process in the main loop 64 bit in one step although
+ we don't know the end of the string. But accessing at
+ 8-byte alignment guarantees that we never access illegal
+ memory if this would not also be done by the trivial
+ implementation (this is because all processor inherent
+ boundaries are multiples of 8). */
+
+ movq %rdi, %rdx
+ andl $7, %edx /* Mask alignment bits */
+ movq %rdi, %rax /* duplicate destination. */
+ jz 1f /* aligned => start loop */
+ neg %edx
+ addl $8, %edx /* Align to 8 bytes. */
+
+ /* Search the first bytes directly. */
+0: movb (%rax), %cl /* load byte */
+ cmpb %cl,%sil /* compare byte. */
+ je 6f /* target found */
+ testb %cl,%cl /* is byte NUL? */
+ je 7f /* yes => return NULL */
+ incq %rax /* increment pointer */
+ decl %edx
+ jnz 0b
+
+
+1:
+ /* At the moment %rsi contains C. What we need for the
+ algorithm is C in all bytes of the register. Avoid
+ operations on 16 bit words because these require an
+ prefix byte (and one more cycle). */
+ /* Populate 8 bit data to full 64-bit. */
+ movabs $0x0101010101010101,%r9
+ movzbl %sil,%edx
+ imul %rdx,%r9
+
+ movq $0xfefefefefefefeff, %r8 /* Save magic. */
+
+ /* We exit the loop if adding MAGIC_BITS to LONGWORD fails to
+ change any of the hole bits of LONGWORD.
+
+ 1) Is this safe? Will it catch all the zero bytes?
+ Suppose there is a byte with all zeros. Any carry bits
+ propagating from its left will fall into the hole at its
+ least significant bit and stop. Since there will be no
+ carry from its most significant bit, the LSB of the
+ byte to the left will be unchanged, and the zero will be
+ detected.
+
+ 2) Is this worthwhile? Will it ignore everything except
+ zero bytes? Suppose every byte of QUARDWORD has a bit set
+ somewhere. There will be a carry into bit 8. If bit 8
+ is set, this will carry into bit 16. If bit 8 is clear,
+ one of bits 9-15 must be set, so there will be a carry
+ into bit 16. Similarly, there will be a carry into bit
+ 24 tec.. If one of bits 54-63 is set, there will be a carry
+ into bit 64 (=carry flag), so all of the hole bits will
+ be changed.
+
+ 3) But wait! Aren't we looking for C, not zero?
+ Good point. So what we do is XOR LONGWORD with a longword,
+ each of whose bytes is C. This turns each byte that is C
+ into a zero. */
+
+ .p2align 4
+4:
+ /* Main Loop is unrolled 4 times. */
+ /* First unroll. */
+ movq (%rax), %rcx /* get double word (= 8 bytes) in question */
+ addq $8,%rax /* adjust pointer for next word */
+ movq %r8, %rdx /* magic value */
+ xorq %r9, %rcx /* XOR with qword c|...|c => bytes of str == c
+ are now 0 */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jnz 3f /* found c => return pointer */
+
+ /* The quadword we looked at does not contain the value we're looking
+ for. Let's search now whether we have reached the end of the
+ string. */
+ xorq %r9, %rcx /* restore original dword without reload */
+ movq %r8, %rdx /* magic value */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 7f /* highest byte is NUL => return NULL */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jnz 7f /* found NUL => return NULL */
+
+ /* Second unroll. */
+ movq (%rax), %rcx /* get double word (= 8 bytes) in question */
+ addq $8,%rax /* adjust pointer for next word */
+ movq %r8, %rdx /* magic value */
+ xorq %r9, %rcx /* XOR with qword c|...|c => bytes of str == c
+ are now 0 */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jnz 3f /* found c => return pointer */
+
+ /* The quadword we looked at does not contain the value we're looking
+ for. Let's search now whether we have reached the end of the
+ string. */
+ xorq %r9, %rcx /* restore original dword without reload */
+ movq %r8, %rdx /* magic value */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 7f /* highest byte is NUL => return NULL */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jnz 7f /* found NUL => return NULL */
+ /* Third unroll. */
+ movq (%rax), %rcx /* get double word (= 8 bytes) in question */
+ addq $8,%rax /* adjust pointer for next word */
+ movq %r8, %rdx /* magic value */
+ xorq %r9, %rcx /* XOR with qword c|...|c => bytes of str == c
+ are now 0 */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jnz 3f /* found c => return pointer */
+
+ /* The quadword we looked at does not contain the value we're looking
+ for. Let's search now whether we have reached the end of the
+ string. */
+ xorq %r9, %rcx /* restore original dword without reload */
+ movq %r8, %rdx /* magic value */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 7f /* highest byte is NUL => return NULL */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jnz 7f /* found NUL => return NULL */
+ /* Fourth unroll. */
+ movq (%rax), %rcx /* get double word (= 8 bytes) in question */
+ addq $8,%rax /* adjust pointer for next word */
+ movq %r8, %rdx /* magic value */
+ xorq %r9, %rcx /* XOR with qword c|...|c => bytes of str == c
+ are now 0 */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jnz 3f /* found c => return pointer */
+
+ /* The quadword we looked at does not contain the value we're looking
+ for. Let's search now whether we have reached the end of the
+ string. */
+ xorq %r9, %rcx /* restore original dword without reload */
+ movq %r8, %rdx /* magic value */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 7f /* highest byte is NUL => return NULL */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jz 4b /* no NUL found => restart loop */
+
+
+7: /* Return NULL. */
+ xorl %eax, %eax
+ retq
+
+
+ /* We now scan for the byte in which the character was matched.
+ But we have to take care of the case that a NUL char is
+ found before this in the dword. Note that we XORed %rcx
+ with the byte we're looking for, therefore the tests below look
+ reversed. */
+
+
+ .p2align 4 /* Align, it's a jump target. */
+3: movq %r9,%rdx /* move to %rdx so that we can access bytes */
+ subq $8,%rax /* correct pointer increment. */
+ testb %cl, %cl /* is first byte C? */
+ jz 6f /* yes => return pointer */
+ cmpb %dl, %cl /* is first byte NUL? */
+ je 7b /* yes => return NULL */
+ incq %rax /* increment pointer */
+
+ testb %ch, %ch /* is second byte C? */
+ jz 6f /* yes => return pointer */
+ cmpb %dl, %ch /* is second byte NUL? */
+ je 7b /* yes => return NULL? */
+ incq %rax /* increment pointer */
+
+ shrq $16, %rcx /* make upper bytes accessible */
+ testb %cl, %cl /* is third byte C? */
+ jz 6f /* yes => return pointer */
+ cmpb %dl, %cl /* is third byte NUL? */
+ je 7b /* yes => return NULL */
+ incq %rax /* increment pointer */
+
+ testb %ch, %ch /* is fourth byte C? */
+ jz 6f /* yes => return pointer */
+ cmpb %dl, %ch /* is fourth byte NUL? */
+ je 7b /* yes => return NULL? */
+ incq %rax /* increment pointer */
+
+ shrq $16, %rcx /* make upper bytes accessible */
+ testb %cl, %cl /* is fifth byte C? */
+ jz 6f /* yes => return pointer */
+ cmpb %dl, %cl /* is fifth byte NUL? */
+ je 7b /* yes => return NULL */
+ incq %rax /* increment pointer */
+
+ testb %ch, %ch /* is sixth byte C? */
+ jz 6f /* yes => return pointer */
+ cmpb %dl, %ch /* is sixth byte NUL? */
+ je 7b /* yes => return NULL? */
+ incq %rax /* increment pointer */
+
+ shrq $16, %rcx /* make upper bytes accessible */
+ testb %cl, %cl /* is seventh byte C? */
+ jz 6f /* yes => return pointer */
+ cmpb %dl, %cl /* is seventh byte NUL? */
+ je 7b /* yes => return NULL */
+
+ /* It must be in the eigth byte and it cannot be NUL. */
+ incq %rax
+
+6:
+ nop
+ retq
+END (BP_SYM (strchr))
+
+weak_alias (BP_SYM (strchr), BP_SYM (index))
diff --git a/libc/string/x86_64/strcmp.S b/libc/string/x86_64/strcmp.S
new file mode 100644
index 000000000..0b401a773
--- /dev/null
+++ b/libc/string/x86_64/strcmp.S
@@ -0,0 +1,41 @@
+/* Highly optimized version for x86-64.
+ Copyright (C) 1999, 2000, 2002, 2003, 2005 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Based on i686 version contributed by Ulrich Drepper
+ <drepper@cygnus.com>, 1999.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include "_glibc_inc.h"
+
+ .text
+ENTRY (BP_SYM (strcmp))
+L(oop): movb (%rdi), %al
+ cmpb (%rsi), %al
+ jne L(neq)
+ incq %rdi
+ incq %rsi
+ testb %al, %al
+ jnz L(oop)
+
+ xorl %eax, %eax
+ ret
+
+L(neq): movl $1, %eax
+ movl $-1, %ecx
+ cmovbl %ecx, %eax
+ ret
+END (BP_SYM (strcmp))
diff --git a/libc/string/x86_64/strcpy.S b/libc/string/x86_64/strcpy.S
new file mode 100644
index 000000000..0847e2b7c
--- /dev/null
+++ b/libc/string/x86_64/strcpy.S
@@ -0,0 +1,153 @@
+/* strcpy/stpcpy implementation for x86-64.
+ Copyright (C) 2002 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Andreas Jaeger <aj@suse.de>, 2002.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include "_glibc_inc.h"
+
+#ifndef USE_AS_STPCPY
+# define STRCPY strcpy
+#endif
+
+ .text
+ENTRY (BP_SYM (STRCPY))
+ movq %rsi, %rcx /* Source register. */
+ andl $7, %ecx /* mask alignment bits */
+ movq %rdi, %rdx /* Duplicate destination pointer. */
+
+ jz 5f /* aligned => start loop */
+
+ neg %ecx /* We need to align to 8 bytes. */
+ addl $8,%ecx
+ /* Search the first bytes directly. */
+0:
+ movb (%rsi), %al /* Fetch a byte */
+ testb %al, %al /* Is it NUL? */
+ movb %al, (%rdx) /* Store it */
+ jz 4f /* If it was NUL, done! */
+ incq %rsi
+ incq %rdx
+ decl %ecx
+ jnz 0b
+
+5:
+ movq $0xfefefefefefefeff,%r8
+
+ /* Now the sources is aligned. Unfortunatly we cannot force
+ to have both source and destination aligned, so ignore the
+ alignment of the destination. */
+ .p2align 4
+1:
+ /* 1st unroll. */
+ movq (%rsi), %rax /* Read double word (8 bytes). */
+ addq $8, %rsi /* Adjust pointer for next word. */
+ movq %rax, %r9 /* Save a copy for NUL finding. */
+ addq %r8, %r9 /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rax, %r9 /* (word+magic)^word */
+ orq %r8, %r9 /* set all non-carry bits */
+ incq %r9 /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+
+ jnz 3f /* found NUL => return pointer */
+
+ movq %rax, (%rdx) /* Write value to destination. */
+ addq $8, %rdx /* Adjust pointer. */
+
+ /* 2nd unroll. */
+ movq (%rsi), %rax /* Read double word (8 bytes). */
+ addq $8, %rsi /* Adjust pointer for next word. */
+ movq %rax, %r9 /* Save a copy for NUL finding. */
+ addq %r8, %r9 /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rax, %r9 /* (word+magic)^word */
+ orq %r8, %r9 /* set all non-carry bits */
+ incq %r9 /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+
+ jnz 3f /* found NUL => return pointer */
+
+ movq %rax, (%rdx) /* Write value to destination. */
+ addq $8, %rdx /* Adjust pointer. */
+
+ /* 3rd unroll. */
+ movq (%rsi), %rax /* Read double word (8 bytes). */
+ addq $8, %rsi /* Adjust pointer for next word. */
+ movq %rax, %r9 /* Save a copy for NUL finding. */
+ addq %r8, %r9 /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rax, %r9 /* (word+magic)^word */
+ orq %r8, %r9 /* set all non-carry bits */
+ incq %r9 /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+
+ jnz 3f /* found NUL => return pointer */
+
+ movq %rax, (%rdx) /* Write value to destination. */
+ addq $8, %rdx /* Adjust pointer. */
+
+ /* 4th unroll. */
+ movq (%rsi), %rax /* Read double word (8 bytes). */
+ addq $8, %rsi /* Adjust pointer for next word. */
+ movq %rax, %r9 /* Save a copy for NUL finding. */
+ addq %r8, %r9 /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rax, %r9 /* (word+magic)^word */
+ orq %r8, %r9 /* set all non-carry bits */
+ incq %r9 /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+
+ jnz 3f /* found NUL => return pointer */
+
+ movq %rax, (%rdx) /* Write value to destination. */
+ addq $8, %rdx /* Adjust pointer. */
+ jmp 1b /* Next iteration. */
+
+ /* Do the last few bytes. %rax contains the value to write.
+ The loop is unrolled twice. */
+ .p2align 4
+3:
+ /* Note that stpcpy needs to return with the value of the NUL
+ byte. */
+ movb %al, (%rdx) /* 1st byte. */
+ testb %al, %al /* Is it NUL. */
+ jz 4f /* yes, finish. */
+ incq %rdx /* Increment destination. */
+ movb %ah, (%rdx) /* 2nd byte. */
+ testb %ah, %ah /* Is it NUL?. */
+ jz 4f /* yes, finish. */
+ incq %rdx /* Increment destination. */
+ shrq $16, %rax /* Shift... */
+ jmp 3b /* and look at next two bytes in %rax. */
+
+4:
+#ifdef USE_AS_STPCPY
+ movq %rdx, %rax /* Destination is return value. */
+#else
+ movq %rdi, %rax /* Source is return value. */
+#endif
+ retq
+END (BP_SYM (STRCPY))
diff --git a/libc/string/x86_64/strcspn.S b/libc/string/x86_64/strcspn.S
new file mode 100644
index 000000000..e1a22e4f1
--- /dev/null
+++ b/libc/string/x86_64/strcspn.S
@@ -0,0 +1,123 @@
+/* strcspn (str, ss) -- Return the length of the initial segment of STR
+ which contains no characters from SS.
+ For AMD x86-64.
+ Copyright (C) 1994-1997, 2000, 2002, 2003, 2004, 2005
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>.
+ Bug fixes by Alan Modra <Alan@SPRI.Levels.UniSA.Edu.Au>.
+ Adopted for x86-64 by Andreas Jaeger <aj@suse.de>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include "_glibc_inc.h"
+
+/* BEWARE: `#ifdef strcspn' means that strcspn is redefined as `strpbrk' */
+#define STRPBRK_P (defined strcspn)
+
+ .text
+ENTRY (strcspn)
+
+ movq %rdi, %rdx /* Save SRC. */
+
+ /* 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. */
+ movq %rdi, %r8 /* Save value. */
+ subq $256, %rsp /* Make space for 256 bytes. */
+ movl $32, %ecx /* 32*8 bytes = 256 bytes. */
+ movq %rsp, %rdi
+ xorl %eax, %eax /* We store 0s. */
+ cld
+ rep
+ stosq
+
+ movq %rsi, %rax /* Setup skipset. */
+
+/* For understanding the following code remember that %rcx == 0 now.
+ Although all the following instruction only modify %cl we always
+ have a correct zero-extended 64-bit value in %rcx. */
+
+ .p2align 4
+L(2): movb (%rax), %cl /* get byte from skipset */
+ testb %cl, %cl /* is NUL char? */
+ jz L(1) /* yes => start compare loop */
+ movb %cl, (%rsp,%rcx) /* set corresponding byte in skipset table */
+
+ movb 1(%rax), %cl /* get byte from skipset */
+ testb $0xff, %cl /* is NUL char? */
+ jz L(1) /* yes => start compare loop */
+ movb %cl, (%rsp,%rcx) /* set corresponding byte in skipset table */
+
+ movb 2(%rax), %cl /* get byte from skipset */
+ testb $0xff, %cl /* is NUL char? */
+ jz L(1) /* yes => start compare loop */
+ movb %cl, (%rsp,%rcx) /* set corresponding byte in skipset table */
+
+ movb 3(%rax), %cl /* get byte from skipset */
+ addq $4, %rax /* increment skipset pointer */
+ movb %cl, (%rsp,%rcx) /* set corresponding byte in skipset table */
+ testb $0xff, %cl /* is NUL char? */
+ jnz L(2) /* no => process next dword from skipset */
+
+L(1): leaq -4(%rdx), %rax /* 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 skipset was found
+ and
+ 2. the end of the string was found
+ But as a sign that the character is in the skipset we store its
+ value in the table. But the value of NUL is NUL so the loop
+ terminates for NUL in every case. */
+
+ .p2align 4
+L(3): addq $4, %rax /* adjust pointer for full loop round */
+
+ movb (%rax), %cl /* get byte from string */
+ cmpb %cl, (%rsp,%rcx) /* is it contained in skipset? */
+ je L(4) /* yes => return */
+
+ movb 1(%rax), %cl /* get byte from string */
+ cmpb %cl, (%rsp,%rcx) /* is it contained in skipset? */
+ je L(5) /* yes => return */
+
+ movb 2(%rax), %cl /* get byte from string */
+ cmpb %cl, (%rsp,%rcx) /* is it contained in skipset? */
+ jz L(6) /* yes => return */
+
+ movb 3(%rax), %cl /* get byte from string */
+ cmpb %cl, (%rsp,%rcx) /* is it contained in skipset? */
+ jne L(3) /* no => start loop again */
+
+ incq %rax /* adjust pointer */
+L(6): incq %rax
+L(5): incq %rax
+
+L(4): addq $256, %rsp /* remove skipset */
+#if STRPBRK_P
+ xorl %edx,%edx
+ orb %cl, %cl /* was last character NUL? */
+ cmovzq %rdx, %rax /* Yes: return NULL */
+#else
+ subq %rdx, %rax /* we have to return the number of valid
+ characters, so compute distance to first
+ non-valid character */
+#endif
+ ret
+END (strcspn)
diff --git a/libc/string/x86_64/string.c b/libc/string/x86_64/string.c
new file mode 100644
index 000000000..60caddf99
--- /dev/null
+++ b/libc/string/x86_64/string.c
@@ -0,0 +1,1454 @@
+/* Tester for string functions.
+ Copyright (C) 1995-2000, 2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+/* Make sure we don't test the optimized inline functions if we want to
+ test the real implementation. */
+#if !defined DO_STRING_INLINES
+#undef __USE_STRING_INLINES
+#endif
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <fcntl.h>
+
+#define STREQ(a, b) (strcmp((a), (b)) == 0)
+
+const char *it = "<UNSET>"; /* Routine name for message routines. */
+size_t errors = 0;
+
+/* Complain if condition is not true. */
+static void
+check (int thing, int number)
+{
+ if (!thing)
+ {
+ printf("%s flunked test %d\n", it, number);
+ ++errors;
+ }
+}
+
+/* Complain if first two args don't strcmp as equal. */
+static void
+equal (const char *a, const char *b, int number)
+{
+ check(a != NULL && b != NULL && STREQ (a, b), number);
+}
+
+char one[50];
+char two[50];
+char *cp;
+
+static void
+test_strcmp (void)
+{
+ it = "strcmp";
+ check (strcmp ("", "") == 0, 1); /* Trivial case. */
+ check (strcmp ("a", "a") == 0, 2); /* Identity. */
+ check (strcmp ("abc", "abc") == 0, 3); /* Multicharacter. */
+ check (strcmp ("abc", "abcd") < 0, 4); /* Length mismatches. */
+ check (strcmp ("abcd", "abc") > 0, 5);
+ check (strcmp ("abcd", "abce") < 0, 6); /* Honest miscompares. */
+ check (strcmp ("abce", "abcd") > 0, 7);
+ check (strcmp ("a\203", "a") > 0, 8); /* Tricky if char signed. */
+ check (strcmp ("a\203", "a\003") > 0, 9);
+
+ {
+ char buf1[0x40], buf2[0x40];
+ int i, j;
+ for (i=0; i < 0x10; i++)
+ for (j = 0; j < 0x10; j++)
+ {
+ int k;
+ for (k = 0; k < 0x3f; k++)
+ {
+ buf1[j] = '0' ^ (k & 4);
+ buf2[j] = '4' ^ (k & 4);
+ }
+ buf1[i] = buf1[0x3f] = 0;
+ buf2[j] = buf2[0x3f] = 0;
+ for (k = 0; k < 0xf; k++)
+ {
+ int cnum = 0x10+0x10*k+0x100*j+0x1000*i;
+ check (strcmp (buf1+i,buf2+j) == 0, cnum);
+ buf1[i+k] = 'A' + i + k;
+ buf1[i+k+1] = 0;
+ check (strcmp (buf1+i,buf2+j) > 0, cnum+1);
+ check (strcmp (buf2+j,buf1+i) < 0, cnum+2);
+ buf2[j+k] = 'B' + i + k;
+ buf2[j+k+1] = 0;
+ check (strcmp (buf1+i,buf2+j) < 0, cnum+3);
+ check (strcmp (buf2+j,buf1+i) > 0, cnum+4);
+ buf2[j+k] = 'A' + i + k;
+ buf1[i] = 'A' + i + 0x80;
+ check (strcmp (buf1+i,buf2+j) > 0, cnum+5);
+ check (strcmp (buf2+j,buf1+i) < 0, cnum+6);
+ buf1[i] = 'A' + i;
+ }
+ }
+ }
+}
+
+#define SIMPLE_COPY(fn, n, str, ntest) \
+ do { \
+ int __n; \
+ char *cp; \
+ for (__n = 0; __n < (int) sizeof (one); ++__n) \
+ one[__n] = 'Z'; \
+ fn (one, str); \
+ for (cp = one, __n = 0; __n < n; ++__n, ++cp) \
+ check (*cp == '0' + (n % 10), ntest); \
+ check (*cp == '\0', ntest); \
+ } while (0)
+
+static void
+test_strcpy (void)
+{
+ int i;
+ it = "strcpy";
+ check (strcpy (one, "abcd") == one, 1); /* Returned value. */
+ equal (one, "abcd", 2); /* Basic test. */
+
+ (void) strcpy (one, "x");
+ equal (one, "x", 3); /* Writeover. */
+ equal (one+2, "cd", 4); /* Wrote too much? */
+
+ (void) strcpy (two, "hi there");
+ (void) strcpy (one, two);
+ equal (one, "hi there", 5); /* Basic test encore. */
+ equal (two, "hi there", 6); /* Stomped on source? */
+
+ (void) strcpy (one, "");
+ equal (one, "", 7); /* Boundary condition. */
+
+ for (i = 0; i < 16; i++)
+ {
+ (void) strcpy (one + i, "hi there"); /* Unaligned destination. */
+ equal (one + i, "hi there", 8 + (i * 2));
+ (void) strcpy (two, one + i); /* Unaligned source. */
+ equal (two, "hi there", 9 + (i * 2));
+ }
+
+ SIMPLE_COPY(strcpy, 0, "", 41);
+ SIMPLE_COPY(strcpy, 1, "1", 42);
+ SIMPLE_COPY(strcpy, 2, "22", 43);
+ SIMPLE_COPY(strcpy, 3, "333", 44);
+ SIMPLE_COPY(strcpy, 4, "4444", 45);
+ SIMPLE_COPY(strcpy, 5, "55555", 46);
+ SIMPLE_COPY(strcpy, 6, "666666", 47);
+ SIMPLE_COPY(strcpy, 7, "7777777", 48);
+ SIMPLE_COPY(strcpy, 8, "88888888", 49);
+ SIMPLE_COPY(strcpy, 9, "999999999", 50);
+ SIMPLE_COPY(strcpy, 10, "0000000000", 51);
+ SIMPLE_COPY(strcpy, 11, "11111111111", 52);
+ SIMPLE_COPY(strcpy, 12, "222222222222", 53);
+ SIMPLE_COPY(strcpy, 13, "3333333333333", 54);
+ SIMPLE_COPY(strcpy, 14, "44444444444444", 55);
+ SIMPLE_COPY(strcpy, 15, "555555555555555", 56);
+ SIMPLE_COPY(strcpy, 16, "6666666666666666", 57);
+}
+
+static void
+test_stpcpy (void)
+{
+ it = "stpcpy";
+ check ((stpcpy (one, "a") - one) == 1, 1);
+ equal (one, "a", 2);
+
+ check ((stpcpy (one, "ab") - one) == 2, 3);
+ equal (one, "ab", 4);
+
+ check ((stpcpy (one, "abc") - one) == 3, 5);
+ equal (one, "abc", 6);
+
+ check ((stpcpy (one, "abcd") - one) == 4, 7);
+ equal (one, "abcd", 8);
+
+ check ((stpcpy (one, "abcde") - one) == 5, 9);
+ equal (one, "abcde", 10);
+
+ check ((stpcpy (one, "abcdef") - one) == 6, 11);
+ equal (one, "abcdef", 12);
+
+ check ((stpcpy (one, "abcdefg") - one) == 7, 13);
+ equal (one, "abcdefg", 14);
+
+ check ((stpcpy (one, "abcdefgh") - one) == 8, 15);
+ equal (one, "abcdefgh", 16);
+
+ check ((stpcpy (one, "abcdefghi") - one) == 9, 17);
+ equal (one, "abcdefghi", 18);
+
+ check ((stpcpy (one, "x") - one) == 1, 19);
+ equal (one, "x", 20); /* Writeover. */
+ equal (one+2, "cdefghi", 21); /* Wrote too much? */
+
+ check ((stpcpy (one, "xx") - one) == 2, 22);
+ equal (one, "xx", 23); /* Writeover. */
+ equal (one+3, "defghi", 24); /* Wrote too much? */
+
+ check ((stpcpy (one, "xxx") - one) == 3, 25);
+ equal (one, "xxx", 26); /* Writeover. */
+ equal (one+4, "efghi", 27); /* Wrote too much? */
+
+ check ((stpcpy (one, "xxxx") - one) == 4, 28);
+ equal (one, "xxxx", 29); /* Writeover. */
+ equal (one+5, "fghi", 30); /* Wrote too much? */
+
+ check ((stpcpy (one, "xxxxx") - one) == 5, 31);
+ equal (one, "xxxxx", 32); /* Writeover. */
+ equal (one+6, "ghi", 33); /* Wrote too much? */
+
+ check ((stpcpy (one, "xxxxxx") - one) == 6, 34);
+ equal (one, "xxxxxx", 35); /* Writeover. */
+ equal (one+7, "hi", 36); /* Wrote too much? */
+
+ check ((stpcpy (one, "xxxxxxx") - one) == 7, 37);
+ equal (one, "xxxxxxx", 38); /* Writeover. */
+ equal (one+8, "i", 39); /* Wrote too much? */
+
+ check ((stpcpy (stpcpy (stpcpy (one, "a"), "b"), "c") - one) == 3, 40);
+ equal (one, "abc", 41);
+ equal (one + 4, "xxx", 42);
+
+ SIMPLE_COPY(stpcpy, 0, "", 43);
+ SIMPLE_COPY(stpcpy, 1, "1", 44);
+ SIMPLE_COPY(stpcpy, 2, "22", 45);
+ SIMPLE_COPY(stpcpy, 3, "333", 46);
+ SIMPLE_COPY(stpcpy, 4, "4444", 47);
+ SIMPLE_COPY(stpcpy, 5, "55555", 48);
+ SIMPLE_COPY(stpcpy, 6, "666666", 49);
+ SIMPLE_COPY(stpcpy, 7, "7777777", 50);
+ SIMPLE_COPY(stpcpy, 8, "88888888", 51);
+ SIMPLE_COPY(stpcpy, 9, "999999999", 52);
+ SIMPLE_COPY(stpcpy, 10, "0000000000", 53);
+ SIMPLE_COPY(stpcpy, 11, "11111111111", 54);
+ SIMPLE_COPY(stpcpy, 12, "222222222222", 55);
+ SIMPLE_COPY(stpcpy, 13, "3333333333333", 56);
+ SIMPLE_COPY(stpcpy, 14, "44444444444444", 57);
+ SIMPLE_COPY(stpcpy, 15, "555555555555555", 58);
+ SIMPLE_COPY(stpcpy, 16, "6666666666666666", 59);
+}
+
+static void
+test_stpncpy (void)
+{
+ it = "stpncpy";
+ memset (one, 'x', sizeof (one));
+ check (stpncpy (one, "abc", 2) == one + 2, 1);
+ check (stpncpy (one, "abc", 3) == one + 3, 2);
+ check (stpncpy (one, "abc", 4) == one + 3, 3);
+ check (one[3] == '\0' && one[4] == 'x', 4);
+ check (stpncpy (one, "abcd", 5) == one + 4, 5);
+ check (one[4] == '\0' && one[5] == 'x', 6);
+ check (stpncpy (one, "abcd", 6) == one + 4, 7);
+ check (one[4] == '\0' && one[5] == '\0' && one[6] == 'x', 8);
+}
+
+static void
+test_strcat (void)
+{
+ it = "strcat";
+ (void) strcpy (one, "ijk");
+ check (strcat (one, "lmn") == one, 1); /* Returned value. */
+ equal (one, "ijklmn", 2); /* Basic test. */
+
+ (void) strcpy (one, "x");
+ (void) strcat (one, "yz");
+ equal (one, "xyz", 3); /* Writeover. */
+ equal (one+4, "mn", 4); /* Wrote too much? */
+
+ (void) strcpy (one, "gh");
+ (void) strcpy (two, "ef");
+ (void) strcat (one, two);
+ equal (one, "ghef", 5); /* Basic test encore. */
+ equal (two, "ef", 6); /* Stomped on source? */
+
+ (void) strcpy (one, "");
+ (void) strcat (one, "");
+ equal (one, "", 7); /* Boundary conditions. */
+ (void) strcpy (one, "ab");
+ (void) strcat (one, "");
+ equal (one, "ab", 8);
+ (void) strcpy (one, "");
+ (void) strcat (one, "cd");
+ equal (one, "cd", 9);
+}
+
+static void
+test_strncat (void)
+{
+ /* First test it as strcat, with big counts, then test the count
+ mechanism. */
+ it = "strncat";
+ (void) strcpy (one, "ijk");
+ check (strncat (one, "lmn", 99) == one, 1); /* Returned value. */
+ equal (one, "ijklmn", 2); /* Basic test. */
+
+ (void) strcpy (one, "x");
+ (void) strncat (one, "yz", 99);
+ equal (one, "xyz", 3); /* Writeover. */
+ equal (one+4, "mn", 4); /* Wrote too much? */
+
+ (void) strcpy (one, "gh");
+ (void) strcpy (two, "ef");
+ (void) strncat (one, two, 99);
+ equal (one, "ghef", 5); /* Basic test encore. */
+ equal (two, "ef", 6); /* Stomped on source? */
+
+ (void) strcpy (one, "");
+ (void) strncat (one, "", 99);
+ equal (one, "", 7); /* Boundary conditions. */
+ (void) strcpy (one, "ab");
+ (void) strncat (one, "", 99);
+ equal (one, "ab", 8);
+ (void) strcpy (one, "");
+ (void) strncat (one, "cd", 99);
+ equal (one, "cd", 9);
+
+ (void) strcpy (one, "ab");
+ (void) strncat (one, "cdef", 2);
+ equal (one, "abcd", 10); /* Count-limited. */
+
+ (void) strncat (one, "gh", 0);
+ equal (one, "abcd", 11); /* Zero count. */
+
+ (void) strncat (one, "gh", 2);
+ equal (one, "abcdgh", 12); /* Count and length equal. */
+
+ (void) strncat (one, "ij", (size_t)-1); /* set sign bit in count */
+ equal (one, "abcdghij", 13);
+}
+
+static void
+test_strncmp (void)
+{
+ /* First test as strcmp with big counts, then test count code. */
+ it = "strncmp";
+ check (strncmp ("", "", 99) == 0, 1); /* Trivial case. */
+ check (strncmp ("a", "a", 99) == 0, 2); /* Identity. */
+ check (strncmp ("abc", "abc", 99) == 0, 3); /* Multicharacter. */
+ check (strncmp ("abc", "abcd", 99) < 0, 4); /* Length unequal. */
+ check (strncmp ("abcd", "abc", 99) > 0, 5);
+ check (strncmp ("abcd", "abce", 99) < 0, 6); /* Honestly unequal. */
+ check (strncmp ("abce", "abcd", 99) > 0, 7);
+ check (strncmp ("a\203", "a", 2) > 0, 8); /* Tricky if '\203' < 0 */
+ check (strncmp ("a\203", "a\003", 2) > 0, 9);
+ check (strncmp ("abce", "abcd", 3) == 0, 10); /* Count limited. */
+ check (strncmp ("abce", "abc", 3) == 0, 11); /* Count == length. */
+ check (strncmp ("abcd", "abce", 4) < 0, 12); /* Nudging limit. */
+ check (strncmp ("abc", "def", 0) == 0, 13); /* Zero count. */
+ check (strncmp ("abc", "", (size_t)-1) > 0, 14); /* set sign bit in count */
+ check (strncmp ("abc", "abc", (size_t)-2) == 0, 15);
+}
+
+static void
+test_strncpy (void)
+{
+ /* Testing is a bit different because of odd semantics. */
+ it = "strncpy";
+ check (strncpy (one, "abc", 4) == one, 1); /* Returned value. */
+ equal (one, "abc", 2); /* Did the copy go right? */
+
+ (void) strcpy (one, "abcdefgh");
+ (void) strncpy (one, "xyz", 2);
+ equal (one, "xycdefgh", 3); /* Copy cut by count. */
+
+ (void) strcpy (one, "abcdefgh");
+ (void) strncpy (one, "xyz", 3); /* Copy cut just before NUL. */
+ equal (one, "xyzdefgh", 4);
+
+ (void) strcpy (one, "abcdefgh");
+ (void) strncpy (one, "xyz", 4); /* Copy just includes NUL. */
+ equal (one, "xyz", 5);
+ equal (one+4, "efgh", 6); /* Wrote too much? */
+
+ (void) strcpy (one, "abcdefgh");
+ (void) strncpy (one, "xyz", 5); /* Copy includes padding. */
+ equal (one, "xyz", 7);
+ equal (one+4, "", 8);
+ equal (one+5, "fgh", 9);
+
+ (void) strcpy (one, "abc");
+ (void) strncpy (one, "xyz", 0); /* Zero-length copy. */
+ equal (one, "abc", 10);
+
+ (void) strncpy (one, "", 2); /* Zero-length source. */
+ equal (one, "", 11);
+ equal (one+1, "", 12);
+ equal (one+2, "c", 13);
+
+ (void) strcpy (one, "hi there");
+ (void) strncpy (two, one, 9);
+ equal (two, "hi there", 14); /* Just paranoia. */
+ equal (one, "hi there", 15); /* Stomped on source? */
+}
+
+static void
+test_strlen (void)
+{
+ it = "strlen";
+ check (strlen ("") == 0, 1); /* Empty. */
+ check (strlen ("a") == 1, 2); /* Single char. */
+ check (strlen ("abcd") == 4, 3); /* Multiple chars. */
+ {
+ char buf[4096];
+ int i;
+ char *p;
+ for (i=0; i < 0x100; i++)
+ {
+ p = (char *) ((unsigned long int)(buf + 0xff) & ~0xff) + i;
+ strcpy (p, "OK");
+ strcpy (p+3, "BAD/WRONG");
+ check (strlen (p) == 2, 4+i);
+ }
+ }
+}
+
+static void
+test_strnlen (void)
+{
+ it = "strnlen";
+ check (strnlen ("", 10) == 0, 1); /* Empty. */
+ check (strnlen ("a", 10) == 1, 2); /* Single char. */
+ check (strnlen ("abcd", 10) == 4, 3); /* Multiple chars. */
+ check (strnlen ("foo", (size_t)-1) == 3, 4); /* limits of n. */
+
+ {
+ char buf[4096];
+ int i;
+ char *p;
+ for (i=0; i < 0x100; i++)
+ {
+ p = (char *) ((unsigned long int)(buf + 0xff) & ~0xff) + i;
+ strcpy (p, "OK");
+ strcpy (p+3, "BAD/WRONG");
+ check (strnlen (p, 100) == 2, 5+i);
+ }
+ }
+}
+
+static void
+test_strchr (void)
+{
+ it = "strchr";
+ check (strchr ("abcd", 'z') == NULL, 1); /* Not found. */
+ (void) strcpy (one, "abcd");
+ check (strchr (one, 'c') == one+2, 2); /* Basic test. */
+ check (strchr (one, 'd') == one+3, 3); /* End of string. */
+ check (strchr (one, 'a') == one, 4); /* Beginning. */
+ check (strchr (one, '\0') == one+4, 5); /* Finding NUL. */
+ (void) strcpy (one, "ababa");
+ check (strchr (one, 'b') == one+1, 6); /* Finding first. */
+ (void) strcpy (one, "");
+ check (strchr (one, 'b') == NULL, 7); /* Empty string. */
+ check (strchr (one, '\0') == one, 8); /* NUL in empty string. */
+ {
+ char buf[4096];
+ int i;
+ char *p;
+ for (i=0; i < 0x100; i++)
+ {
+ p = (char *) ((unsigned long int) (buf + 0xff) & ~0xff) + i;
+ strcpy (p, "OK");
+ strcpy (p+3, "BAD/WRONG");
+ check (strchr (p, '/') == NULL, 9+i);
+ }
+ }
+}
+
+static void
+test_strchrnul (void)
+{
+ const char *os;
+ it = "strchrnul";
+ cp = strchrnul ((os = "abcd"), 'z');
+ check (*cp == '\0', 1); /* Not found. */
+ check (cp == os + 4, 2);
+ (void) strcpy (one, "abcd");
+ check (strchrnul (one, 'c') == one+2, 3); /* Basic test. */
+ check (strchrnul (one, 'd') == one+3, 4); /* End of string. */
+ check (strchrnul (one, 'a') == one, 5); /* Beginning. */
+ check (strchrnul (one, '\0') == one+4, 6); /* Finding NUL. */
+ (void) strcpy (one, "ababa");
+ check (strchrnul (one, 'b') == one+1, 7); /* Finding first. */
+ (void) strcpy (one, "");
+ check (strchrnul (one, 'b') == one, 8); /* Empty string. */
+ check (strchrnul (one, '\0') == one, 9); /* NUL in empty string. */
+ {
+ char buf[4096];
+ int i;
+ char *p;
+ for (i=0; i < 0x100; i++)
+ {
+ p = (char *) ((unsigned long int) (buf + 0xff) & ~0xff) + i;
+ strcpy (p, "OK");
+ strcpy (p+3, "BAD/WRONG");
+ cp = strchrnul (p, '/');
+ check (*cp == '\0', 9+2*i);
+ check (cp == p+2, 10+2*i);
+ }
+ }
+}
+
+static void
+test_rawmemchr (void)
+{
+ it = "rawmemchr";
+ (void) strcpy (one, "abcd");
+ check (rawmemchr (one, 'c') == one+2, 1); /* Basic test. */
+ check (rawmemchr (one, 'd') == one+3, 2); /* End of string. */
+ check (rawmemchr (one, 'a') == one, 3); /* Beginning. */
+ check (rawmemchr (one, '\0') == one+4, 4); /* Finding NUL. */
+ (void) strcpy (one, "ababa");
+ check (rawmemchr (one, 'b') == one+1, 5); /* Finding first. */
+ (void) strcpy (one, "");
+ check (rawmemchr (one, '\0') == one, 6); /* NUL in empty string. */
+ {
+ char buf[4096];
+ int i;
+ char *p;
+ for (i=0; i < 0x100; i++)
+ {
+ p = (char *) ((unsigned long int) (buf + 0xff) & ~0xff) + i;
+ strcpy (p, "OK");
+ strcpy (p+3, "BAD/WRONG");
+ check (rawmemchr (p, 'R') == p+8, 6+i);
+ }
+ }
+}
+
+static void
+test_index (void)
+{
+ it = "index";
+ check (index ("abcd", 'z') == NULL, 1); /* Not found. */
+ (void) strcpy (one, "abcd");
+ check (index (one, 'c') == one+2, 2); /* Basic test. */
+ check (index (one, 'd') == one+3, 3); /* End of string. */
+ check (index (one, 'a') == one, 4); /* Beginning. */
+ check (index (one, '\0') == one+4, 5); /* Finding NUL. */
+ (void) strcpy (one, "ababa");
+ check (index (one, 'b') == one+1, 6); /* Finding first. */
+ (void) strcpy (one, "");
+ check (index (one, 'b') == NULL, 7); /* Empty string. */
+ check (index (one, '\0') == one, 8); /* NUL in empty string. */
+}
+
+static void
+test_strrchr (void)
+{
+ it = "strrchr";
+ check (strrchr ("abcd", 'z') == NULL, 1); /* Not found. */
+ (void) strcpy (one, "abcd");
+ check (strrchr (one, 'c') == one+2, 2); /* Basic test. */
+ check (strrchr (one, 'd') == one+3, 3); /* End of string. */
+ check (strrchr (one, 'a') == one, 4); /* Beginning. */
+ check (strrchr (one, '\0') == one+4, 5); /* Finding NUL. */
+ (void) strcpy (one, "ababa");
+ check (strrchr (one, 'b') == one+3, 6); /* Finding last. */
+ (void) strcpy (one, "");
+ check (strrchr (one, 'b') == NULL, 7); /* Empty string. */
+ check (strrchr (one, '\0') == one, 8); /* NUL in empty string. */
+ {
+ char buf[4096];
+ int i;
+ char *p;
+ for (i=0; i < 0x100; i++)
+ {
+ p = (char *) ((unsigned long int) (buf + 0xff) & ~0xff) + i;
+ strcpy (p, "OK");
+ strcpy (p+3, "BAD/WRONG");
+ check (strrchr (p, '/') == NULL, 9+i);
+ }
+ }
+}
+
+static void
+test_memrchr (void)
+{
+ size_t l;
+ it = "memrchr";
+ check (memrchr ("abcd", 'z', 5) == NULL, 1); /* Not found. */
+ (void) strcpy (one, "abcd");
+ l = strlen (one) + 1;
+ check (memrchr (one, 'c', l) == one+2, 2); /* Basic test. */
+ check (memrchr (one, 'd', l) == one+3, 3); /* End of string. */
+ check (memrchr (one, 'a', l) == one, 4); /* Beginning. */
+ check (memrchr (one, '\0', l) == one+4, 5); /* Finding NUL. */
+ (void) strcpy (one, "ababa");
+ l = strlen (one) + 1;
+ check (memrchr (one, 'b', l) == one+3, 6); /* Finding last. */
+ (void) strcpy (one, "");
+ l = strlen (one) + 1;
+ check (memrchr (one, 'b', l) == NULL, 7); /* Empty string. */
+ check (memrchr (one, '\0', l) == one, 8); /* NUL in empty string. */
+
+ /* now test all possible alignment and length combinations to catch
+ bugs due to unrolled loops (assuming unrolling is limited to no
+ more than 128 byte chunks: */
+ {
+ char buf[128 + sizeof(long)];
+ long align, len, i, pos;
+
+ for (align = 0; align < (long) sizeof(long); ++align) {
+ for (len = 0; len < (long) (sizeof(buf) - align); ++len) {
+ for (i = 0; i < len; ++i)
+ buf[align + i] = 'x'; /* don't depend on memset... */
+
+ for (pos = len - 1; pos >= 0; --pos) {
+#if 0
+ printf("align %d, len %d, pos %d\n", align, len, pos);
+#endif
+ check(memrchr(buf + align, 'x', len) == buf + align + pos, 9);
+ check(memrchr(buf + align + pos + 1, 'x', len - (pos + 1)) == NULL,
+ 10);
+ buf[align + pos] = '-';
+ }
+ }
+ }
+ }
+}
+
+static void
+test_rindex (void)
+{
+ it = "rindex";
+ check (rindex ("abcd", 'z') == NULL, 1); /* Not found. */
+ (void) strcpy (one, "abcd");
+ check (rindex (one, 'c') == one+2, 2); /* Basic test. */
+ check (rindex (one, 'd') == one+3, 3); /* End of string. */
+ check (rindex (one, 'a') == one, 4); /* Beginning. */
+ check (rindex (one, '\0') == one+4, 5); /* Finding NUL. */
+ (void) strcpy (one, "ababa");
+ check (rindex (one, 'b') == one+3, 6); /* Finding last. */
+ (void) strcpy (one, "");
+ check (rindex (one, 'b') == NULL, 7); /* Empty string. */
+ check (rindex (one, '\0') == one, 8); /* NUL in empty string. */
+}
+
+static void
+test_strpbrk (void)
+{
+ it = "strpbrk";
+ check(strpbrk("abcd", "z") == NULL, 1); /* Not found. */
+ (void) strcpy(one, "abcd");
+ check(strpbrk(one, "c") == one+2, 2); /* Basic test. */
+ check(strpbrk(one, "d") == one+3, 3); /* End of string. */
+ check(strpbrk(one, "a") == one, 4); /* Beginning. */
+ check(strpbrk(one, "") == NULL, 5); /* Empty search list. */
+ check(strpbrk(one, "cb") == one+1, 6); /* Multiple search. */
+ (void) strcpy(one, "abcabdea");
+ check(strpbrk(one, "b") == one+1, 7); /* Finding first. */
+ check(strpbrk(one, "cb") == one+1, 8); /* With multiple search. */
+ check(strpbrk(one, "db") == one+1, 9); /* Another variant. */
+ (void) strcpy(one, "");
+ check(strpbrk(one, "bc") == NULL, 10); /* Empty string. */
+ (void) strcpy(one, "");
+ check(strpbrk(one, "bcd") == NULL, 11); /* Empty string. */
+ (void) strcpy(one, "");
+ check(strpbrk(one, "bcde") == NULL, 12); /* Empty string. */
+ check(strpbrk(one, "") == NULL, 13); /* Both strings empty. */
+ (void) strcpy(one, "abcabdea");
+ check(strpbrk(one, "befg") == one+1, 14); /* Finding first. */
+ check(strpbrk(one, "cbr") == one+1, 15); /* With multiple search. */
+ check(strpbrk(one, "db") == one+1, 16); /* Another variant. */
+ check(strpbrk(one, "efgh") == one+6, 17); /* And yet another. */
+}
+
+static void
+test_strstr (void)
+{
+ it = "strstr";
+ check(strstr("abcd", "z") == NULL, 1); /* Not found. */
+ check(strstr("abcd", "abx") == NULL, 2); /* Dead end. */
+ (void) strcpy(one, "abcd");
+ check(strstr(one, "c") == one+2, 3); /* Basic test. */
+ check(strstr(one, "bc") == one+1, 4); /* Multichar. */
+ check(strstr(one, "d") == one+3, 5); /* End of string. */
+ check(strstr(one, "cd") == one+2, 6); /* Tail of string. */
+ check(strstr(one, "abc") == one, 7); /* Beginning. */
+ check(strstr(one, "abcd") == one, 8); /* Exact match. */
+ check(strstr(one, "abcde") == NULL, 9); /* Too long. */
+ check(strstr(one, "de") == NULL, 10); /* Past end. */
+ check(strstr(one, "") == one, 11); /* Finding empty. */
+ (void) strcpy(one, "ababa");
+ check(strstr(one, "ba") == one+1, 12); /* Finding first. */
+ (void) strcpy(one, "");
+ check(strstr(one, "b") == NULL, 13); /* Empty string. */
+ check(strstr(one, "") == one, 14); /* Empty in empty string. */
+ (void) strcpy(one, "bcbca");
+ check(strstr(one, "bca") == one+2, 15); /* False start. */
+ (void) strcpy(one, "bbbcabbca");
+ check(strstr(one, "bbca") == one+1, 16); /* With overlap. */
+}
+
+static void
+test_strspn (void)
+{
+ it = "strspn";
+ check(strspn("abcba", "abc") == 5, 1); /* Whole string. */
+ check(strspn("abcba", "ab") == 2, 2); /* Partial. */
+ check(strspn("abc", "qx") == 0, 3); /* None. */
+ check(strspn("", "ab") == 0, 4); /* Null string. */
+ check(strspn("abc", "") == 0, 5); /* Null search list. */
+}
+
+static void
+test_strcspn (void)
+{
+ it = "strcspn";
+ check(strcspn("abcba", "qx") == 5, 1); /* Whole string. */
+ check(strcspn("abcba", "cx") == 2, 2); /* Partial. */
+ check(strcspn("abc", "abc") == 0, 3); /* None. */
+ check(strcspn("", "ab") == 0, 4); /* Null string. */
+ check(strcspn("abc", "") == 3, 5); /* Null search list. */
+}
+
+static void
+test_strtok (void)
+{
+ it = "strtok";
+ (void) strcpy(one, "first, second, third");
+ equal(strtok(one, ", "), "first", 1); /* Basic test. */
+ equal(one, "first", 2);
+ equal(strtok((char *)NULL, ", "), "second", 3);
+ equal(strtok((char *)NULL, ", "), "third", 4);
+ check(strtok((char *)NULL, ", ") == NULL, 5);
+ (void) strcpy(one, ", first, ");
+ equal(strtok(one, ", "), "first", 6); /* Extra delims, 1 tok. */
+ check(strtok((char *)NULL, ", ") == NULL, 7);
+ (void) strcpy(one, "1a, 1b; 2a, 2b");
+ equal(strtok(one, ", "), "1a", 8); /* Changing delim lists. */
+ equal(strtok((char *)NULL, "; "), "1b", 9);
+ equal(strtok((char *)NULL, ", "), "2a", 10);
+ (void) strcpy(two, "x-y");
+ equal(strtok(two, "-"), "x", 11); /* New string before done. */
+ equal(strtok((char *)NULL, "-"), "y", 12);
+ check(strtok((char *)NULL, "-") == NULL, 13);
+ (void) strcpy(one, "a,b, c,, ,d");
+ equal(strtok(one, ", "), "a", 14); /* Different separators. */
+ equal(strtok((char *)NULL, ", "), "b", 15);
+ equal(strtok((char *)NULL, " ,"), "c", 16); /* Permute list too. */
+ equal(strtok((char *)NULL, " ,"), "d", 17);
+ check(strtok((char *)NULL, ", ") == NULL, 18);
+ check(strtok((char *)NULL, ", ") == NULL, 19); /* Persistence. */
+ (void) strcpy(one, ", ");
+ check(strtok(one, ", ") == NULL, 20); /* No tokens. */
+ (void) strcpy(one, "");
+ check(strtok(one, ", ") == NULL, 21); /* Empty string. */
+ (void) strcpy(one, "abc");
+ equal(strtok(one, ", "), "abc", 22); /* No delimiters. */
+ check(strtok((char *)NULL, ", ") == NULL, 23);
+ (void) strcpy(one, "abc");
+ equal(strtok(one, ""), "abc", 24); /* Empty delimiter list. */
+ check(strtok((char *)NULL, "") == NULL, 25);
+ (void) strcpy(one, "abcdefgh");
+ (void) strcpy(one, "a,b,c");
+ equal(strtok(one, ","), "a", 26); /* Basics again... */
+ equal(strtok((char *)NULL, ","), "b", 27);
+ equal(strtok((char *)NULL, ","), "c", 28);
+ check(strtok((char *)NULL, ",") == NULL, 29);
+ equal(one+6, "gh", 30); /* Stomped past end? */
+ equal(one, "a", 31); /* Stomped old tokens? */
+ equal(one+2, "b", 32);
+ equal(one+4, "c", 33);
+}
+
+static void
+test_strtok_r (void)
+{
+ it = "strtok_r";
+ (void) strcpy(one, "first, second, third");
+ cp = NULL; /* Always initialize cp to make sure it doesn't point to some old data. */
+ equal(strtok_r(one, ", ", &cp), "first", 1); /* Basic test. */
+ equal(one, "first", 2);
+ equal(strtok_r((char *)NULL, ", ", &cp), "second", 3);
+ equal(strtok_r((char *)NULL, ", ", &cp), "third", 4);
+ check(strtok_r((char *)NULL, ", ", &cp) == NULL, 5);
+ (void) strcpy(one, ", first, ");
+ cp = NULL;
+ equal(strtok_r(one, ", ", &cp), "first", 6); /* Extra delims, 1 tok. */
+ check(strtok_r((char *)NULL, ", ", &cp) == NULL, 7);
+ (void) strcpy(one, "1a, 1b; 2a, 2b");
+ cp = NULL;
+ equal(strtok_r(one, ", ", &cp), "1a", 8); /* Changing delim lists. */
+ equal(strtok_r((char *)NULL, "; ", &cp), "1b", 9);
+ equal(strtok_r((char *)NULL, ", ", &cp), "2a", 10);
+ (void) strcpy(two, "x-y");
+ cp = NULL;
+ equal(strtok_r(two, "-", &cp), "x", 11); /* New string before done. */
+ equal(strtok_r((char *)NULL, "-", &cp), "y", 12);
+ check(strtok_r((char *)NULL, "-", &cp) == NULL, 13);
+ (void) strcpy(one, "a,b, c,, ,d");
+ cp = NULL;
+ equal(strtok_r(one, ", ", &cp), "a", 14); /* Different separators. */
+ equal(strtok_r((char *)NULL, ", ", &cp), "b", 15);
+ equal(strtok_r((char *)NULL, " ,", &cp), "c", 16); /* Permute list too. */
+ equal(strtok_r((char *)NULL, " ,", &cp), "d", 17);
+ check(strtok_r((char *)NULL, ", ", &cp) == NULL, 18);
+ check(strtok_r((char *)NULL, ", ", &cp) == NULL, 19); /* Persistence. */
+ (void) strcpy(one, ", ");
+ cp = NULL;
+ check(strtok_r(one, ", ", &cp) == NULL, 20); /* No tokens. */
+ (void) strcpy(one, "");
+ cp = NULL;
+ check(strtok_r(one, ", ", &cp) == NULL, 21); /* Empty string. */
+ check(strtok_r((char *)NULL, ", ", &cp) == NULL, 22); /* Persistence. */
+ (void) strcpy(one, "abc");
+ cp = NULL;
+ equal(strtok_r(one, ", ", &cp), "abc", 23); /* No delimiters. */
+ check(strtok_r((char *)NULL, ", ", &cp) == NULL, 24);
+ (void) strcpy(one, "abc");
+ cp = NULL;
+ equal(strtok_r(one, "", &cp), "abc", 25); /* Empty delimiter list. */
+ check(strtok_r((char *)NULL, "", &cp) == NULL, 26);
+ (void) strcpy(one, "abcdefgh");
+ (void) strcpy(one, "a,b,c");
+ cp = NULL;
+ equal(strtok_r(one, ",", &cp), "a", 27); /* Basics again... */
+ equal(strtok_r((char *)NULL, ",", &cp), "b", 28);
+ equal(strtok_r((char *)NULL, ",", &cp), "c", 29);
+ check(strtok_r((char *)NULL, ",", &cp) == NULL, 30);
+ equal(one+6, "gh", 31); /* Stomped past end? */
+ equal(one, "a", 32); /* Stomped old tokens? */
+ equal(one+2, "b", 33);
+ equal(one+4, "c", 34);
+}
+
+static void
+test_strsep (void)
+{
+ char *ptr;
+ it = "strsep";
+ cp = strcpy(one, "first, second, third");
+ equal(strsep(&cp, ", "), "first", 1); /* Basic test. */
+ equal(one, "first", 2);
+ equal(strsep(&cp, ", "), "", 3);
+ equal(strsep(&cp, ", "), "second", 4);
+ equal(strsep(&cp, ", "), "", 5);
+ equal(strsep(&cp, ", "), "third", 6);
+ check(strsep(&cp, ", ") == NULL, 7);
+ cp = strcpy(one, ", first, ");
+ equal(strsep(&cp, ", "), "", 8);
+ equal(strsep(&cp, ", "), "", 9);
+ equal(strsep(&cp, ", "), "first", 10); /* Extra delims, 1 tok. */
+ equal(strsep(&cp, ", "), "", 11);
+ equal(strsep(&cp, ", "), "", 12);
+ check(strsep(&cp, ", ") == NULL, 13);
+ cp = strcpy(one, "1a, 1b; 2a, 2b");
+ equal(strsep(&cp, ", "), "1a", 14); /* Changing delim lists. */
+ equal(strsep(&cp, ", "), "", 15);
+ equal(strsep(&cp, "; "), "1b", 16);
+ equal(strsep(&cp, ", "), "", 17);
+ equal(strsep(&cp, ", "), "2a", 18);
+ cp = strcpy(two, "x-y");
+ equal(strsep(&cp, "-"), "x", 19); /* New string before done. */
+ equal(strsep(&cp, "-"), "y", 20);
+ check(strsep(&cp, "-") == NULL, 21);
+ cp = strcpy(one, "a,b, c,, ,d ");
+ equal(strsep(&cp, ", "), "a", 22); /* Different separators. */
+ equal(strsep(&cp, ", "), "b", 23);
+ equal(strsep(&cp, " ,"), "", 24);
+ equal(strsep(&cp, " ,"), "c", 25); /* Permute list too. */
+ equal(strsep(&cp, " ,"), "", 26);
+ equal(strsep(&cp, " ,"), "", 27);
+ equal(strsep(&cp, " ,"), "", 28);
+ equal(strsep(&cp, " ,"), "d", 29);
+ equal(strsep(&cp, " ,"), "", 30);
+ check(strsep(&cp, ", ") == NULL, 31);
+ check(strsep(&cp, ", ") == NULL, 32); /* Persistence. */
+ cp = strcpy(one, ", ");
+ equal(strsep(&cp, ", "), "", 33);
+ equal(strsep(&cp, ", "), "", 34);
+ equal(strsep(&cp, ", "), "", 35);
+ check(strsep(&cp, ", ") == NULL, 36); /* No tokens. */
+ cp = strcpy(one, "");
+ equal(strsep(&cp, ", "), "", 37);
+ check(strsep(&cp, ", ") == NULL, 38); /* Empty string. */
+ cp = strcpy(one, "abc");
+ equal(strsep(&cp, ", "), "abc", 39); /* No delimiters. */
+ check(strsep(&cp, ", ") == NULL, 40);
+ cp = strcpy(one, "abc");
+ equal(strsep(&cp, ""), "abc", 41); /* Empty delimiter list. */
+ check(strsep(&cp, "") == NULL, 42);
+ (void) strcpy(one, "abcdefgh");
+ cp = strcpy(one, "a,b,c");
+ equal(strsep(&cp, ","), "a", 43); /* Basics again... */
+ equal(strsep(&cp, ","), "b", 44);
+ equal(strsep(&cp, ","), "c", 45);
+ check(strsep(&cp, ",") == NULL, 46);
+ equal(one+6, "gh", 47); /* Stomped past end? */
+ equal(one, "a", 48); /* Stomped old tokens? */
+ equal(one+2, "b", 49);
+ equal(one+4, "c", 50);
+
+ {
+ char text[] = "This,is,a,test";
+ char *list = strdupa (text);
+ equal (strsep (&list, ","), "This", 51);
+ equal (strsep (&list, ","), "is", 52);
+ equal (strsep (&list, ","), "a", 53);
+ equal (strsep (&list, ","), "test", 54);
+ check (strsep (&list, ",") == NULL, 55);
+ }
+
+ cp = strcpy(one, "a,b, c,, ,d,");
+ equal(strsep(&cp, ","), "a", 56); /* Different separators. */
+ equal(strsep(&cp, ","), "b", 57);
+ equal(strsep(&cp, ","), " c", 58); /* Permute list too. */
+ equal(strsep(&cp, ","), "", 59);
+ equal(strsep(&cp, ","), " ", 60);
+ equal(strsep(&cp, ","), "d", 61);
+ equal(strsep(&cp, ","), "", 62);
+ check(strsep(&cp, ",") == NULL, 63);
+ check(strsep(&cp, ",") == NULL, 64); /* Persistence. */
+
+ cp = strcpy(one, "a,b, c,, ,d,");
+ equal(strsep(&cp, "xy,"), "a", 65); /* Different separators. */
+ equal(strsep(&cp, "x,y"), "b", 66);
+ equal(strsep(&cp, ",xy"), " c", 67); /* Permute list too. */
+ equal(strsep(&cp, "xy,"), "", 68);
+ equal(strsep(&cp, "x,y"), " ", 69);
+ equal(strsep(&cp, ",xy"), "d", 70);
+ equal(strsep(&cp, "xy,"), "", 71);
+ check(strsep(&cp, "x,y") == NULL, 72);
+ check(strsep(&cp, ",xy") == NULL, 73); /* Persistence. */
+
+ cp = strcpy(one, "ABC");
+ one[4] = ':';
+ equal(strsep(&cp, "C"), "AB", 74); /* Access beyond NUL. */
+ ptr = strsep(&cp, ":");
+ equal(ptr, "", 75);
+ check(ptr == one + 3, 76);
+ check(cp == NULL, 77);
+
+ cp = strcpy(one, "ABC");
+ one[4] = ':';
+ equal(strsep(&cp, "CD"), "AB", 78); /* Access beyond NUL. */
+ ptr = strsep(&cp, ":.");
+ equal(ptr, "", 79);
+ check(ptr == one + 3, 80);
+
+ cp = strcpy(one, "ABC"); /* No token in string. */
+ equal(strsep(&cp, ","), "ABC", 81);
+ check(cp == NULL, 82);
+
+ *one = '\0'; /* Empty string. */
+ cp = one;
+ ptr = strsep(&cp, ",");
+ equal(ptr, "", 83);
+ check(ptr == one, 84);
+ check(cp == NULL, 85);
+
+ *one = '\0'; /* Empty string and no token. */
+ cp = one;
+ ptr = strsep(&cp, "");
+ equal(ptr, "", 86);
+ check(ptr == one , 87);
+ check(cp == NULL, 88);
+}
+
+static void
+test_memcmp (void)
+{
+ it = "memcmp";
+ check(memcmp("a", "a", 1) == 0, 1); /* Identity. */
+ check(memcmp("abc", "abc", 3) == 0, 2); /* Multicharacter. */
+ check(memcmp("abcd", "abce", 4) < 0, 3); /* Honestly unequal. */
+ check(memcmp("abce", "abcd", 4) > 0, 4);
+ check(memcmp("alph", "beta", 4) < 0, 5);
+ check(memcmp("a\203", "a\003", 2) > 0, 6);
+ check(memcmp("abce", "abcd", 3) == 0, 7); /* Count limited. */
+ check(memcmp("abc", "def", 0) == 0, 8); /* Zero count. */
+}
+
+static void
+test_memchr (void)
+{
+ it = "memchr";
+ check(memchr("abcd", 'z', 4) == NULL, 1); /* Not found. */
+ (void) strcpy(one, "abcd");
+ check(memchr(one, 'c', 4) == one+2, 2); /* Basic test. */
+ check(memchr(one, ~0xff|'c', 4) == one+2, 2); /* ignore highorder bits. */
+ check(memchr(one, 'd', 4) == one+3, 3); /* End of string. */
+ check(memchr(one, 'a', 4) == one, 4); /* Beginning. */
+ check(memchr(one, '\0', 5) == one+4, 5); /* Finding NUL. */
+ (void) strcpy(one, "ababa");
+ check(memchr(one, 'b', 5) == one+1, 6); /* Finding first. */
+ check(memchr(one, 'b', 0) == NULL, 7); /* Zero count. */
+ check(memchr(one, 'a', 1) == one, 8); /* Singleton case. */
+ (void) strcpy(one, "a\203b");
+ check(memchr(one, 0203, 3) == one+1, 9); /* Unsignedness. */
+
+ /* now test all possible alignment and length combinations to catch
+ bugs due to unrolled loops (assuming unrolling is limited to no
+ more than 128 byte chunks: */
+ {
+ char buf[128 + sizeof(long)];
+ long align, len, i, pos;
+
+ for (align = 0; align < (long) sizeof(long); ++align) {
+ for (len = 0; len < (long) (sizeof(buf) - align); ++len) {
+ for (i = 0; i < len; ++i) {
+ buf[align + i] = 'x'; /* don't depend on memset... */
+ }
+ for (pos = 0; pos < len; ++pos) {
+#if 0
+ printf("align %d, len %d, pos %d\n", align, len, pos);
+#endif
+ check(memchr(buf + align, 'x', len) == buf + align + pos, 10);
+ check(memchr(buf + align, 'x', pos) == NULL, 11);
+ buf[align + pos] = '-';
+ }
+ }
+ }
+ }
+}
+
+static void
+test_memcpy (void)
+{
+ int i;
+ it = "memcpy";
+ check(memcpy(one, "abc", 4) == one, 1); /* Returned value. */
+ equal(one, "abc", 2); /* Did the copy go right? */
+
+ (void) strcpy(one, "abcdefgh");
+ (void) memcpy(one+1, "xyz", 2);
+ equal(one, "axydefgh", 3); /* Basic test. */
+
+ (void) strcpy(one, "abc");
+ (void) memcpy(one, "xyz", 0);
+ equal(one, "abc", 4); /* Zero-length copy. */
+
+ (void) strcpy(one, "hi there");
+ (void) strcpy(two, "foo");
+ (void) memcpy(two, one, 9);
+ equal(two, "hi there", 5); /* Just paranoia. */
+ equal(one, "hi there", 6); /* Stomped on source? */
+
+ for (i = 0; i < 16; i++)
+ {
+ const char *x = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
+ strcpy (one, x);
+ check (memcpy (one + i, "hi there", 9) == one + i,
+ 7 + (i * 6)); /* Unaligned destination. */
+ check (memcmp (one, x, i) == 0, 8 + (i * 6)); /* Wrote under? */
+ equal (one + i, "hi there", 9 + (i * 6));
+ check (one[i + 9] == 'x', 10 + (i * 6)); /* Wrote over? */
+ check (memcpy (two, one + i, 9) == two,
+ 11 + (i * 6)); /* Unaligned source. */
+ equal (two, "hi there", 12 + (i * 6));
+ }
+}
+
+static void
+test_mempcpy (void)
+{
+ int i;
+ it = "mempcpy";
+ check(mempcpy(one, "abc", 4) == one + 4, 1); /* Returned value. */
+ equal(one, "abc", 2); /* Did the copy go right? */
+
+ (void) strcpy(one, "abcdefgh");
+ (void) mempcpy(one+1, "xyz", 2);
+ equal(one, "axydefgh", 3); /* Basic test. */
+
+ (void) strcpy(one, "abc");
+ (void) mempcpy(one, "xyz", 0);
+ equal(one, "abc", 4); /* Zero-length copy. */
+
+ (void) strcpy(one, "hi there");
+ (void) strcpy(two, "foo");
+ (void) mempcpy(two, one, 9);
+ equal(two, "hi there", 5); /* Just paranoia. */
+ equal(one, "hi there", 6); /* Stomped on source? */
+
+ for (i = 0; i < 16; i++)
+ {
+ const char *x = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
+ strcpy (one, x);
+ check (mempcpy (one + i, "hi there", 9) == one + i + 9,
+ 7 + (i * 6)); /* Unaligned destination. */
+ check (memcmp (one, x, i) == 0, 8 + (i * 6)); /* Wrote under? */
+ equal (one + i, "hi there", 9 + (i * 6));
+ check (one[i + 9] == 'x', 10 + (i * 6)); /* Wrote over? */
+ check (mempcpy (two, one + i, 9) == two + 9,
+ 11 + (i * 6)); /* Unaligned source. */
+ equal (two, "hi there", 12 + (i * 6));
+ }
+}
+
+static void
+test_memmove (void)
+{
+ it = "memmove";
+ check(memmove(one, "abc", 4) == one, 1); /* Returned value. */
+ equal(one, "abc", 2); /* Did the copy go right? */
+
+ (void) strcpy(one, "abcdefgh");
+ (void) memmove(one+1, "xyz", 2);
+ equal(one, "axydefgh", 3); /* Basic test. */
+
+ (void) strcpy(one, "abc");
+ (void) memmove(one, "xyz", 0);
+ equal(one, "abc", 4); /* Zero-length copy. */
+
+ (void) strcpy(one, "hi there");
+ (void) strcpy(two, "foo");
+ (void) memmove(two, one, 9);
+ equal(two, "hi there", 5); /* Just paranoia. */
+ equal(one, "hi there", 6); /* Stomped on source? */
+
+ (void) strcpy(one, "abcdefgh");
+ (void) memmove(one+1, one, 9);
+ equal(one, "aabcdefgh", 7); /* Overlap, right-to-left. */
+
+ (void) strcpy(one, "abcdefgh");
+ (void) memmove(one+1, one+2, 7);
+ equal(one, "acdefgh", 8); /* Overlap, left-to-right. */
+
+ (void) strcpy(one, "abcdefgh");
+ (void) memmove(one, one, 9);
+ equal(one, "abcdefgh", 9); /* 100% overlap. */
+}
+
+static void
+test_memccpy (void)
+{
+ /* First test like memcpy, then the search part The SVID, the only
+ place where memccpy is mentioned, says overlap might fail, so we
+ don't try it. Besides, it's hard to see the rationale for a
+ non-left-to-right memccpy. */
+ it = "memccpy";
+ check(memccpy(one, "abc", 'q', 4) == NULL, 1); /* Returned value. */
+ equal(one, "abc", 2); /* Did the copy go right? */
+
+ (void) strcpy(one, "abcdefgh");
+ (void) memccpy(one+1, "xyz", 'q', 2);
+ equal(one, "axydefgh", 3); /* Basic test. */
+
+ (void) strcpy(one, "abc");
+ (void) memccpy(one, "xyz", 'q', 0);
+ equal(one, "abc", 4); /* Zero-length copy. */
+
+ (void) strcpy(one, "hi there");
+ (void) strcpy(two, "foo");
+ (void) memccpy(two, one, 'q', 9);
+ equal(two, "hi there", 5); /* Just paranoia. */
+ equal(one, "hi there", 6); /* Stomped on source? */
+
+ (void) strcpy(one, "abcdefgh");
+ (void) strcpy(two, "horsefeathers");
+ check(memccpy(two, one, 'f', 9) == two+6, 7); /* Returned value. */
+ equal(one, "abcdefgh", 8); /* Source intact? */
+ equal(two, "abcdefeathers", 9); /* Copy correct? */
+
+ (void) strcpy(one, "abcd");
+ (void) strcpy(two, "bumblebee");
+ check(memccpy(two, one, 'a', 4) == two+1, 10); /* First char. */
+ equal(two, "aumblebee", 11);
+ check(memccpy(two, one, 'd', 4) == two+4, 12); /* Last char. */
+ equal(two, "abcdlebee", 13);
+ (void) strcpy(one, "xyz");
+ check(memccpy(two, one, 'x', 1) == two+1, 14); /* Singleton. */
+ equal(two, "xbcdlebee", 15);
+}
+
+static void
+test_memset (void)
+{
+ int i;
+
+ it = "memset";
+ (void) strcpy(one, "abcdefgh");
+ check(memset(one+1, 'x', 3) == one+1, 1); /* Return value. */
+ equal(one, "axxxefgh", 2); /* Basic test. */
+
+ (void) memset(one+2, 'y', 0);
+ equal(one, "axxxefgh", 3); /* Zero-length set. */
+
+ (void) memset(one+5, 0, 1);
+ equal(one, "axxxe", 4); /* Zero fill. */
+ equal(one+6, "gh", 5); /* And the leftover. */
+
+ (void) memset(one+2, 010045, 1);
+ equal(one, "ax\045xe", 6); /* Unsigned char convert. */
+
+ /* Non-8bit fill character. */
+ memset (one, 0x101, sizeof (one));
+ for (i = 0; i < (int) sizeof (one); ++i)
+ check (one[i] == '\01', 7);
+
+ /* Test for more complex versions of memset, for all alignments and
+ lengths up to 256. This test takes a little while, perhaps it should
+ be made weaker? */
+ {
+ char data[512];
+ int j;
+ int k;
+ int c;
+
+ for (i = 0; i < 512; i++)
+ data[i] = 'x';
+ for (c = 0; c <= 'y'; c += 'y') /* check for memset(,0,) and
+ memset(,'y',) */
+ for (j = 0; j < 256; j++)
+ for (i = 0; i < 256; i++)
+ {
+ memset (data + i, c, j);
+ for (k = 0; k < i; k++)
+ if (data[k] != 'x')
+ goto fail;
+ for (k = i; k < i+j; k++)
+ {
+ if (data[k] != c)
+ goto fail;
+ data[k] = 'x';
+ }
+ for (k = i+j; k < 512; k++)
+ if (data[k] != 'x')
+ goto fail;
+ continue;
+
+ fail:
+ check (0, 8 + i + j * 256 + (c != 0) * 256 * 256);
+ }
+ }
+}
+
+static void
+test_bcopy (void)
+{
+ /* Much like memcpy. Berklix manual is silent about overlap, so
+ don't test it. */
+ it = "bcopy";
+ (void) bcopy("abc", one, 4);
+ equal(one, "abc", 1); /* Simple copy. */
+
+ (void) strcpy(one, "abcdefgh");
+ (void) bcopy("xyz", one+1, 2);
+ equal(one, "axydefgh", 2); /* Basic test. */
+
+ (void) strcpy(one, "abc");
+ (void) bcopy("xyz", one, 0);
+ equal(one, "abc", 3); /* Zero-length copy. */
+
+ (void) strcpy(one, "hi there");
+ (void) strcpy(two, "foo");
+ (void) bcopy(one, two, 9);
+ equal(two, "hi there", 4); /* Just paranoia. */
+ equal(one, "hi there", 5); /* Stomped on source? */
+}
+
+static void
+test_bzero (void)
+{
+ it = "bzero";
+ (void) strcpy(one, "abcdef");
+ bzero(one+2, 2);
+ equal(one, "ab", 1); /* Basic test. */
+ equal(one+3, "", 2);
+ equal(one+4, "ef", 3);
+
+ (void) strcpy(one, "abcdef");
+ bzero(one+2, 0);
+ equal(one, "abcdef", 4); /* Zero-length copy. */
+}
+
+static void
+test_strndup (void)
+{
+ char *p, *q;
+ it = "strndup";
+ p = strndup("abcdef", 12);
+ check(p != NULL, 1);
+ if (p != NULL)
+ {
+ equal(p, "abcdef", 2);
+ q = strndup(p + 1, 2);
+ check(q != NULL, 3);
+ if (q != NULL)
+ equal(q, "bc", 4);
+ free (q);
+ }
+ free (p);
+ p = strndup("abc def", 3);
+ check(p != NULL, 5);
+ if (p != NULL)
+ equal(p, "abc", 6);
+ free (p);
+}
+
+static void
+test_bcmp (void)
+{
+ it = "bcmp";
+ check(bcmp("a", "a", 1) == 0, 1); /* Identity. */
+ check(bcmp("abc", "abc", 3) == 0, 2); /* Multicharacter. */
+ check(bcmp("abcd", "abce", 4) != 0, 3); /* Honestly unequal. */
+ check(bcmp("abce", "abcd", 4) != 0, 4);
+ check(bcmp("alph", "beta", 4) != 0, 5);
+ check(bcmp("abce", "abcd", 3) == 0, 6); /* Count limited. */
+ check(bcmp("abc", "def", 0) == 0, 8); /* Zero count. */
+}
+
+static void
+test_strerror (void)
+{
+ it = "strerror";
+ check(strerror(EDOM) != 0, 1);
+ check(strerror(ERANGE) != 0, 2);
+ check(strerror(ENOENT) != 0, 3);
+}
+
+int
+main (void)
+{
+ int status;
+
+ /* Test strcmp first because we use it to test other things. */
+ test_strcmp ();
+
+ /* Test strcpy next because we need it to set up other tests. */
+ test_strcpy ();
+
+ /* A closely related function is stpcpy. */
+ test_stpcpy ();
+
+ /* stpncpy. */
+ test_stpncpy ();
+
+ /* strcat. */
+ test_strcat ();
+
+ /* strncat. */
+ test_strncat ();
+
+ /* strncmp. */
+ test_strncmp ();
+
+ /* strncpy. */
+ test_strncpy ();
+
+ /* strlen. */
+ test_strlen ();
+
+ /* strnlen. */
+ test_strnlen ();
+
+ /* strchr. */
+ test_strchr ();
+
+ /* strchrnul. */
+ test_strchrnul ();
+
+ /* rawmemchr. */
+ test_rawmemchr ();
+
+ /* index - just like strchr. */
+ test_index ();
+
+ /* strrchr. */
+ test_strrchr ();
+
+ /* memrchr. */
+ test_memrchr ();
+
+ /* rindex - just like strrchr. */
+ test_rindex ();
+
+ /* strpbrk - somewhat like strchr. */
+ test_strpbrk ();
+
+ /* strstr - somewhat like strchr. */
+ test_strstr ();
+
+ /* strspn. */
+ test_strspn ();
+
+ /* strcspn. */
+ test_strcspn ();
+
+ /* strtok - the hard one. */
+ test_strtok ();
+
+ /* strtok_r. */
+ test_strtok_r ();
+
+ /* strsep. */
+ test_strsep ();
+
+ /* memcmp. */
+ test_memcmp ();
+
+ /* memchr. */
+ test_memchr ();
+
+ /* memcpy - need not work for overlap. */
+ test_memcpy ();
+
+ /* memmove - must work on overlap. */
+ test_memmove ();
+
+ /* mempcpy */
+ test_mempcpy ();
+
+ /* memccpy. */
+ test_memccpy ();
+
+ /* memset. */
+ test_memset ();
+
+ /* bcopy. */
+ test_bcopy ();
+
+ /* bzero. */
+ test_bzero ();
+
+ /* bcmp - somewhat like memcmp. */
+ test_bcmp ();
+
+ /* strndup. */
+ test_strndup ();
+
+ /* strerror - VERY system-dependent. */
+ test_strerror ();
+
+
+ if (errors == 0)
+ {
+ status = EXIT_SUCCESS;
+ puts("No errors.");
+ }
+ else
+ {
+ status = EXIT_FAILURE;
+ printf("%lu errors.\n", (unsigned long)errors);
+ }
+
+ return status;
+}
diff --git a/libc/string/x86_64/strlen.S b/libc/string/x86_64/strlen.S
new file mode 100644
index 000000000..36b63031e
--- /dev/null
+++ b/libc/string/x86_64/strlen.S
@@ -0,0 +1,135 @@
+/* strlen(str) -- determine the length of the string STR.
+ Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+ Based on i486 version contributed by Ulrich Drepper <drepper@redhat.com>.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include "_glibc_inc.h"
+
+
+ .text
+ENTRY (strlen)
+ movq %rdi, %rcx /* Duplicate source pointer. */
+ andl $7, %ecx /* mask alignment bits */
+ movq %rdi, %rax /* duplicate destination. */
+ jz 1f /* aligned => start loop */
+
+ neg %ecx /* We need to align to 8 bytes. */
+ addl $8,%ecx
+ /* Search the first bytes directly. */
+0: cmpb $0x0,(%rax) /* is byte NUL? */
+ je 2f /* yes => return */
+ incq %rax /* increment pointer */
+ decl %ecx
+ jnz 0b
+
+1: movq $0xfefefefefefefeff,%r8 /* Save magic. */
+
+ .p2align 4 /* Align loop. */
+4: /* Main Loop is unrolled 4 times. */
+ /* First unroll. */
+ movq (%rax), %rcx /* get double word (= 8 bytes) in question */
+ addq $8,%rax /* adjust pointer for next word */
+ movq %r8, %rdx /* magic value */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jnz 3f /* found NUL => return pointer */
+
+ /* Second unroll. */
+ movq (%rax), %rcx /* get double word (= 8 bytes) in question */
+ addq $8,%rax /* adjust pointer for next word */
+ movq %r8, %rdx /* magic value */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jnz 3f /* found NUL => return pointer */
+
+ /* Third unroll. */
+ movq (%rax), %rcx /* get double word (= 8 bytes) in question */
+ addq $8,%rax /* adjust pointer for next word */
+ movq %r8, %rdx /* magic value */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jnz 3f /* found NUL => return pointer */
+
+ /* Fourth unroll. */
+ movq (%rax), %rcx /* get double word (= 8 bytes) in question */
+ addq $8,%rax /* adjust pointer for next word */
+ movq %r8, %rdx /* magic value */
+ addq %rcx, %rdx /* add the magic value to the word. We get
+ carry bits reported for each byte which
+ is *not* 0 */
+ jnc 3f /* highest byte is NUL => return pointer */
+ xorq %rcx, %rdx /* (word+magic)^word */
+ orq %r8, %rdx /* set all non-carry bits */
+ incq %rdx /* add 1: if one carry bit was *not* set
+ the addition will not result in 0. */
+ jz 4b /* no NUL found => continue loop */
+
+ .p2align 4 /* Align, it's a jump target. */
+3: subq $8,%rax /* correct pointer increment. */
+
+ testb %cl, %cl /* is first byte NUL? */
+ jz 2f /* yes => return */
+ incq %rax /* increment pointer */
+
+ testb %ch, %ch /* is second byte NUL? */
+ jz 2f /* yes => return */
+ incq %rax /* increment pointer */
+
+ testl $0x00ff0000, %ecx /* is third byte NUL? */
+ jz 2f /* yes => return pointer */
+ incq %rax /* increment pointer */
+
+ testl $0xff000000, %ecx /* is fourth byte NUL? */
+ jz 2f /* yes => return pointer */
+ incq %rax /* increment pointer */
+
+ shrq $32, %rcx /* look at other half. */
+
+ testb %cl, %cl /* is first byte NUL? */
+ jz 2f /* yes => return */
+ incq %rax /* increment pointer */
+
+ testb %ch, %ch /* is second byte NUL? */
+ jz 2f /* yes => return */
+ incq %rax /* increment pointer */
+
+ testl $0xff0000, %ecx /* is third byte NUL? */
+ jz 2f /* yes => return pointer */
+ incq %rax /* increment pointer */
+2:
+ subq %rdi, %rax /* compute difference to string start */
+ ret
+END (strlen)
diff --git a/libc/string/x86_64/strpbrk.S b/libc/string/x86_64/strpbrk.S
new file mode 100644
index 000000000..c49cd2c06
--- /dev/null
+++ b/libc/string/x86_64/strpbrk.S
@@ -0,0 +1,2 @@
+#define strcspn strpbrk
+#include "strcspn.S"
diff --git a/libc/string/x86_64/strspn.S b/libc/string/x86_64/strspn.S
new file mode 100644
index 000000000..245d8e699
--- /dev/null
+++ b/libc/string/x86_64/strspn.S
@@ -0,0 +1,114 @@
+/* strspn (str, ss) -- Return the length of the initial segment of STR
+ which contains only characters from SS.
+ For AMD x86-64.
+ Copyright (C) 1994-1997, 2000, 2002, 2003, 2004, 2005
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>.
+ Bug fixes by Alan Modra <Alan@SPRI.Levels.UniSA.Edu.Au>.
+ Adopted for x86-64 by Andreas Jaeger <aj@suse.de>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include "_glibc_inc.h"
+
+ .text
+ENTRY (strspn)
+
+ movq %rdi, %rdx /* Save SRC. */
+
+ /* 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. */
+ movq %rdi, %r8 /* Save value. */
+ subq $256, %rsp /* Make space for 256 bytes. */
+ movl $32, %ecx /* 32*8 bytes = 256 bytes. */
+ movq %rsp, %rdi
+ xorl %eax, %eax /* We store 0s. */
+ cld
+ rep
+ stosq
+
+ movq %rsi, %rax /* Setup stopset. */
+
+/* For understanding the following code remember that %rcx == 0 now.
+ Although all the following instruction only modify %cl we always
+ have a correct zero-extended 64-bit value in %rcx. */
+
+ .p2align 4
+L(2): movb (%rax), %cl /* get byte from stopset */
+ testb %cl, %cl /* is NUL char? */
+ jz L(1) /* yes => start compare loop */
+ movb %cl, (%rsp,%rcx) /* set corresponding byte in stopset table */
+
+ movb 1(%rax), %cl /* get byte from stopset */
+ testb $0xff, %cl /* is NUL char? */
+ jz L(1) /* yes => start compare loop */
+ movb %cl, (%rsp,%rcx) /* set corresponding byte in stopset table */
+
+ movb 2(%rax), %cl /* get byte from stopset */
+ testb $0xff, %cl /* is NUL char? */
+ jz L(1) /* yes => start compare loop */
+ movb %cl, (%rsp,%rcx) /* set corresponding byte in stopset table */
+
+ movb 3(%rax), %cl /* get byte from stopset */
+ addq $4, %rax /* increment stopset pointer */
+ movb %cl, (%rsp,%rcx) /* set corresponding byte in stopset table */
+ testb $0xff, %cl /* is NUL char? */
+ jnz L(2) /* no => process next dword from stopset */
+
+L(1): leaq -4(%rdx), %rax /* 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 character 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. */
+
+ .p2align 4
+L(3): addq $4, %rax /* adjust pointer for full loop round */
+
+ movb (%rax), %cl /* get byte from string */
+ testb %cl, (%rsp,%rcx) /* is it contained in skipset? */
+ jz L(4) /* no => return */
+
+ movb 1(%rax), %cl /* get byte from string */
+ testb %cl, (%rsp,%rcx) /* is it contained in skipset? */
+ jz L(5) /* no => return */
+
+ movb 2(%rax), %cl /* get byte from string */
+ testb %cl, (%rsp,%rcx) /* is it contained in skipset? */
+ jz L(6) /* no => return */
+
+ movb 3(%rax), %cl /* get byte from string */
+ testb %cl, (%rsp,%rcx) /* is it contained in skipset? */
+ jnz L(3) /* yes => start loop again */
+
+ incq %rax /* adjust pointer */
+L(6): incq %rax
+L(5): incq %rax
+
+L(4): addq $256, %rsp /* remove stopset */
+ subq %rdx, %rax /* we have to return the number of valid
+ characters, so compute distance to first
+ non-valid character */
+ ret
+END (strspn)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 10:54:53 +0000