diff options
Diffstat (limited to 'libc/string')
| -rw-r--r-- | libc/string/Makefile | 19 | ||||
| -rw-r--r-- | libc/string/x86_64/Makefile | 31 | ||||
| -rw-r--r-- | libc/string/x86_64/_glibc_inc.h | 33 | ||||
| -rw-r--r-- | libc/string/x86_64/bzero.S | 3 | ||||
| -rw-r--r-- | libc/string/x86_64/memcpy.S | 95 | ||||
| -rw-r--r-- | libc/string/x86_64/memset.S | 138 | ||||
| -rw-r--r-- | libc/string/x86_64/stpcpy.S | 6 | ||||
| -rw-r--r-- | libc/string/x86_64/strcat.S | 256 | ||||
| -rw-r--r-- | libc/string/x86_64/strchr.S | 287 | ||||
| -rw-r--r-- | libc/string/x86_64/strcmp.S | 41 | ||||
| -rw-r--r-- | libc/string/x86_64/strcpy.S | 153 | ||||
| -rw-r--r-- | libc/string/x86_64/strcspn.S | 123 | ||||
| -rw-r--r-- | libc/string/x86_64/string.c | 1454 | ||||
| -rw-r--r-- | libc/string/x86_64/strlen.S | 135 | ||||
| -rw-r--r-- | libc/string/x86_64/strpbrk.S | 2 | ||||
| -rw-r--r-- | libc/string/x86_64/strspn.S | 114 |
16 files changed, 2875 insertions, 15 deletions
diff --git a/libc/string/Makefile b/libc/string/Makefile index 600f3b81d..576f915af 100644 --- a/libc/string/Makefile +++ b/libc/string/Makefile @@ -1,20 +1,9 @@ # Makefile for uClibc # -# Copyright (C) 2000-2003 Erik Andersen <andersen@uclibc.org> +# Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org> # -# This program is free software; you can redistribute it and/or modify it under -# the terms of the GNU Library General Public License as published by the Free -# Software Foundation; either version 2 of the License, or (at your option) any -# later version. -# -# This program is distributed in the hope that it will be useful, but WITHOUT -# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS -# FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more -# details. -# -# You should have received a copy of the GNU Library General Public License -# along with this program; if not, write to the Free Software Foundation, Inc., -# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +# 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 @@ -31,7 +20,7 @@ DIRS += $(TARGET_ARCH) endif endif -ALL_SUBDIRS = generic arm frv i386 mips powerpc sh64 sparc +ALL_SUBDIRS = generic arm frv i386 mips powerpc sh64 sparc x86_64 MSRC= wstring.c MOBJ= basename.o bcopy.o bzero.o dirname.o ffs.o memccpy.o memchr.o memcmp.o \ 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) |