diff options
Diffstat (limited to 'libc/string')
| -rw-r--r-- | libc/string/avr32/Makefile | 26 | ||||
| -rw-r--r-- | libc/string/avr32/bcopy.S | 26 | ||||
| -rw-r--r-- | libc/string/avr32/bzero.S | 22 | ||||
| -rw-r--r-- | libc/string/avr32/memcmp.S | 61 | ||||
| -rw-r--r-- | libc/string/avr32/memcpy.S | 111 | ||||
| -rw-r--r-- | libc/string/avr32/memmove.S | 116 | ||||
| -rw-r--r-- | libc/string/avr32/memset.S | 70 | ||||
| -rw-r--r-- | libc/string/avr32/strcmp.S | 91 | ||||
| -rw-r--r-- | libc/string/avr32/strlen.S | 62 |
9 files changed, 585 insertions, 0 deletions
diff --git a/libc/string/avr32/Makefile b/libc/string/avr32/Makefile new file mode 100644 index 000000000..0002ffdce --- /dev/null +++ b/libc/string/avr32/Makefile @@ -0,0 +1,26 @@ +# Makefile for uClibc +# +# Copyright (C) 2000-2003 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 + +top_srcdir := ../../../ +top_builddir := ../../../ + +all: objs + +include $(top_builddir)Rules.mak +include ../Makefile.in +include $(top_srcdir)Makerules diff --git a/libc/string/avr32/bcopy.S b/libc/string/avr32/bcopy.S new file mode 100644 index 000000000..193919084 --- /dev/null +++ b/libc/string/avr32/bcopy.S @@ -0,0 +1,26 @@ +/* + * Copyright (C) 2004-2007 Atmel Corporation + * + * This file is subject to the terms and conditions of the GNU Lesser General + * Public License. See the file "COPYING.LIB" in the main directory of this + * archive for more details. + */ + +#include <features.h> + +#ifdef __UCLIBC_SUSV3_LEGACY__ + + .text + .global bcopy + .type bcopy, @function + .align 1 +bcopy: + /* Swap the first two arguments */ + eor r11, r12 + eor r12, r11 + eor r11, r12 + rjmp __GI_memmove + + .size bcopy, . - bcopy + +#endif /* __UCLIBC_SUSV3_LEGACY__ */ diff --git a/libc/string/avr32/bzero.S b/libc/string/avr32/bzero.S new file mode 100644 index 000000000..6ced0cbb1 --- /dev/null +++ b/libc/string/avr32/bzero.S @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2004-2007 Atmel Corporation + * + * This file is subject to the terms and conditions of the GNU Lesser General + * Public License. See the file "COPYING.LIB" in the main directory of this + * archive for more details. + */ + +#ifdef __UCLIBC_SUSV3_LEGACY__ + + .text + .global bzero + .type bzero, @function + .align 1 +bzero: + mov r10, r11 + mov r11, 0 + rjmp __memset + + .size bzero, . - bzero + +#endif /* __UCLIBC_SUSV3_LEGACY__ */ diff --git a/libc/string/avr32/memcmp.S b/libc/string/avr32/memcmp.S new file mode 100644 index 000000000..5d7eac3d9 --- /dev/null +++ b/libc/string/avr32/memcmp.S @@ -0,0 +1,61 @@ +/* + * Copyright (C) 2004-2007 Atmel Corporation + * + * This file is subject to the terms and conditions of the GNU Lesser General + * Public License. See the file "COPYING.LIB" in the main directory of this + * archive for more details. + */ + +#include <features.h> + +#define s1 r12 +#define s2 r11 +#define len r10 + + .text + .global memcmp + .type memcmp, @function + .align 1 +memcmp: + sub len, 4 + brlt .Lless_than_4 + +1: ld.w r8, s1++ + ld.w r9, s2++ + cp.w r8, r9 + brne .Lfound_word + sub len, 4 + brge 1b + +.Lless_than_4: + sub len, -4 + reteq 0 + +1: ld.ub r8, s1++ + ld.ub r9, s2++ + sub r8, r9 + retne r8 + sub len, 1 + brgt 1b + + retal 0 + +.Lfound_word: + mov len, 4 + +2: bfextu r11, r9, 24, 8 + bfextu r12, r8, 24, 8 + sub r12, r11 + retne r12 + lsl r8, 8 + lsl r9, 8 + sub len, 1 + brne 2b + retal r12 + + .size memcmp, . - memcmp + +libc_hidden_def(memcmp) +#ifdef __UCLIBC_SUSV3_LEGACY__ +strong_alias(memcmp,bcmp) +#endif diff --git a/libc/string/avr32/memcpy.S b/libc/string/avr32/memcpy.S new file mode 100644 index 000000000..f95aabd13 --- /dev/null +++ b/libc/string/avr32/memcpy.S @@ -0,0 +1,111 @@ +/* + * Copyright (C) 2004-2007 Atmel Corporation + * + * This file is subject to the terms and conditions of the GNU Lesser General + * Public License. See the file "COPYING.LIB" in the main directory of this + * archive for more details. + */ + +/* Don't use r12 as dst since we must return it unmodified */ +#define dst r9 +#define src r11 +#define len r10 + + .text + .global memcpy + .type memcpy, @function +memcpy: + pref src[0] + mov dst, r12 + + /* If we have less than 32 bytes, don't do anything fancy */ + cp.w len, 32 + brge .Lmore_than_31 + + sub len, 1 + retlt r12 +1: ld.ub r8, src++ + st.b dst++, r8 + sub len, 1 + brge 1b + retal r12 + +.Lmore_than_31: + pushm r0-r7, lr + + /* Check alignment */ + mov r8, src + andl r8, 31, COH + brne .Lunaligned_src + mov r8, dst + andl r8, 3, COH + brne .Lunaligned_dst + +.Laligned_copy: + sub len, 32 + brlt .Lless_than_32 + +1: /* Copy 32 bytes at a time */ + ldm src, r0-r7 + sub src, -32 + stm dst, r0-r7 + sub dst, -32 + sub len, 32 + brge 1b + +.Lless_than_32: + /* Copy 16 more bytes if possible */ + sub len, -16 + brlt .Lless_than_16 + ldm src, r0-r3 + sub src, -16 + sub len, 16 + stm dst, r0-r3 + sub dst, -16 + +.Lless_than_16: + /* Do the remaining as byte copies */ + neg len + add pc, pc, len << 2 + .rept 15 + ld.ub r0, src++ + st.b dst++, r0 + .endr + + popm r0-r7, pc + +.Lunaligned_src: + /* Make src cacheline-aligned. r8 = (src & 31) */ + rsub r8, r8, 32 + sub len, r8 +1: ld.ub r0, src++ + st.b dst++, r0 + sub r8, 1 + brne 1b + + /* If dst is word-aligned, we're ready to go */ + pref src[0] + mov r8, 3 + tst dst, r8 + breq .Laligned_copy + +.Lunaligned_dst: + /* src is aligned, but dst is not. Expect bad performance */ + sub len, 4 + brlt 2f +1: ld.w r0, src++ + st.w dst++, r0 + sub len, 4 + brge 1b + +2: neg len + add pc, pc, len << 2 + .rept 3 + ld.ub r0, src++ + st.b dst++, r0 + .endr + + popm r0-r7, pc + .size memcpy, . - memcpy + +libc_hidden_def(memcpy) diff --git a/libc/string/avr32/memmove.S b/libc/string/avr32/memmove.S new file mode 100644 index 000000000..659cdd199 --- /dev/null +++ b/libc/string/avr32/memmove.S @@ -0,0 +1,116 @@ +/* + * Copyright (C) 2004-2007 Atmel Corporation + * + * This file is subject to the terms and conditions of the GNU Lesser General + * Public License. See the file "COPYING.LIB" in the main directory of this + * archive for more details. + */ + +#define dst r12 +#define src r11 +#define len r10 + + .text + .global memmove + .type memmove, @function +memmove: + cp.w src, dst + brge __GI_memcpy + + add dst, len + add src, len + pref src[-1] + + /* + * The rest is basically the same as in memcpy.S except that + * the direction is reversed. + */ + cp.w len, 32 + brge .Lmore_than_31 + + sub len, 1 + retlt r12 +1: ld.ub r8, --src + st.b --dst, r8 + sub len, 1 + brge 1b + retal r12 + +.Lmore_than_31: + pushm r0-r7, lr + + /* Check alignment */ + mov r8, src + andl r8, 31, COH + brne .Lunaligned_src + mov r8, r12 + andl r8, 3, COH + brne .Lunaligned_dst + +.Laligned_copy: + sub len, 32 + brlt .Lless_than_32 + +1: /* Copy 32 bytes at a time */ + sub src, 32 + ldm src, r0-r7 + sub dst, 32 + sub len, 32 + stm dst, r0-r7 + brge 1b + +.Lless_than_32: + /* Copy 16 more bytes if possible */ + sub len, -16 + brlt .Lless_than_16 + sub src, 16 + ldm src, r0-r3 + sub dst, 16 + sub len, 16 + stm dst, r0-r3 + +.Lless_than_16: + /* Do the remaining as byte copies */ + sub len, -16 + breq 2f +1: ld.ub r0, --src + st.b --dst, r0 + sub len, 1 + brne 1b + +2: popm r0-r7, pc + +.Lunaligned_src: + /* Make src cacheline-aligned. r8 = (src & 31) */ + sub len, r8 +1: ld.ub r0, --src + st.b --dst, r0 + sub r8, 1 + brne 1b + + /* If dst is word-aligned, we're ready to go */ + pref src[-4] + mov r8, 3 + tst dst, r8 + breq .Laligned_copy + +.Lunaligned_dst: + /* src is aligned, but dst is not. Expect bad performance */ + sub len, 4 + brlt 2f +1: ld.w r0, --src + st.w --dst, r0 + sub len, 4 + brge 1b + +2: neg len + add pc, pc, len << 2 + .rept 3 + ld.ub r0, --src + st.b --dst, r0 + .endr + + popm r0-r7, pc + .size memmove, . - memmove + +libc_hidden_def(memmove) diff --git a/libc/string/avr32/memset.S b/libc/string/avr32/memset.S new file mode 100644 index 000000000..ca5b53a1a --- /dev/null +++ b/libc/string/avr32/memset.S @@ -0,0 +1,70 @@ +/* + * Copyright (C) 2004-2007 Atmel Corporation + * + * This file is subject to the terms and conditions of the GNU Lesser General + * Public License. See the file "COPYING.LIB" in the main directory of this + * archive for more details. + */ + +#include <features.h> + +#define s r12 +#define c r11 +#define n r10 + + .text + .global memset + .type memset, @function + + .global __memset + .hidden __memset + .type __memset, @function + + .align 1 +memset: +__memset: + cp.w n, 32 + mov r9, s + brge .Llarge_memset + + sub n, 1 + retlt s +1: st.b s++, c + sub n, 1 + brge 1b + + retal r9 + +.Llarge_memset: + mov r8, r11 + mov r11, 3 + bfins r8, r8, 8, 8 + bfins r8, r8, 16, 16 + tst s, r11 + breq 2f + +1: st.b s++, r8 + sub n, 1 + tst s, r11 + brne 1b + +2: mov r11, r9 + mov r9, r8 + sub n, 8 + +3: st.d s++, r8 + sub n, 8 + brge 3b + + /* If we are done, n == -8 and we'll skip all st.b insns below */ + neg n + lsl n, 1 + add pc, n + .rept 7 + st.b s++, r8 + .endr + retal r11 + + .size memset, . - memset + +libc_hidden_def(memset) diff --git a/libc/string/avr32/strcmp.S b/libc/string/avr32/strcmp.S new file mode 100644 index 000000000..e9f087577 --- /dev/null +++ b/libc/string/avr32/strcmp.S @@ -0,0 +1,91 @@ +/* + * Copyright (C) 2004-2007 Atmel Corporation + * + * This file is subject to the terms and conditions of the GNU Lesser General + * Public License. See the file "COPYING.LIB" in the main directory of this + * archive for more details. + */ + +#include <features.h> + +#define s1 r12 +#define s2 r11 +#define len r10 + + .text + .global strcmp + .type strcmp, @function + .align 1 +strcmp: + mov r8, 3 + tst s1, r8 + brne .Lunaligned_s1 + tst s2, r8 + brne .Lunaligned_s2 + +1: ld.w r8, s1++ + ld.w r9, s2++ + cp.w r8, r9 + brne 2f + tnbz r8 + brne 1b + retal 0 + +2: bfextu r12, r8, 24, 8 + bfextu r11, r9, 24, 8 + sub r12, r11 + retne r12 + cp.w r11, 0 + reteq 0 + bfextu r12, r8, 16, 8 + bfextu r11, r9, 16, 8 + sub r12, r11 + retne r12 + cp.w r11, 0 + reteq 0 + bfextu r12, r8, 8, 8 + bfextu r11, r9, 8, 8 + sub r12, r11 + retne r12 + cp.w r11, 0 + reteq 0 + bfextu r12, r8, 0, 8 + bfextu r11, r9, 0, 8 + sub r12, r11 + retal r12 + +.Lunaligned_s1: +3: tst s1, r8 + breq 4f + ld.ub r10, s1++ + ld.ub r9, s2++ + sub r10, r9 + retne r10 + cp.w r9, 0 + brne 3b + retal r10 + +4: tst s2, r8 + breq 1b + +.Lunaligned_s2: + /* + * s1 and s2 can't both be aligned, and unaligned word loads + * can trigger spurious exceptions if we cross a page boundary. + * Do it the slow way... + */ +1: ld.ub r8, s1++ + ld.ub r9, s2++ + sub r8, r9 + retne r8 + cp.w r9, 0 + brne 1b + retal 0 + + .size strcmp, . - strcmp + +libc_hidden_def(strcmp) +#ifndef __UCLIBC_HAS_LOCALE__ +strong_alias(strcmp, strcoll) +libc_hidden_def(strcoll) +#endif diff --git a/libc/string/avr32/strlen.S b/libc/string/avr32/strlen.S new file mode 100644 index 000000000..d2808998d --- /dev/null +++ b/libc/string/avr32/strlen.S @@ -0,0 +1,62 @@ +/* + * Copyright (C) 2004-2007 Atmel Corporation + * + * This file is subject to the terms and conditions of the GNU Lesser General + * Public License. See the file "COPYING.LIB" in the main directory of this + * archive for more details. + */ + +#include <features.h> + +#define str r12 + + .text + .global strlen + .type strlen, @function +strlen: + mov r11, r12 + + mov r9, str + andl r9, 3, COH + brne .Lunaligned_str + +1: ld.w r8, str++ + tnbz r8 + brne 1b + + sub r12, r11 + bfextu r9, r8, 24, 8 + cp.w r9, 0 + subeq r12, 4 + reteq r12 + bfextu r9, r8, 16, 8 + cp.w r9, 0 + subeq r12, 3 + reteq r12 + bfextu r9, r8, 8, 8 + cp.w r9, 0 + subeq r12, 2 + reteq r12 + sub r12, 1 + retal r12 + +.Lunaligned_str: + add pc, pc, r9 << 3 + sub r0, r0, 0 /* 4-byte nop */ + ld.ub r8, str++ + sub r8, r8, 0 + breq 1f + ld.ub r8, str++ + sub r8, r8, 0 + breq 1f + ld.ub r8, str++ + sub r8, r8, 0 + brne 1b + +1: sub r12, 1 + sub r12, r11 + retal r12 + + .size strlen, . - strlen + +libc_hidden_def(strlen) |