diff options
Diffstat (limited to 'libc/string')
| -rw-r--r-- | libc/string/Makefile | 2 | ||||
| -rw-r--r-- | libc/string/sh64/Makefile | 38 | ||||
| -rw-r--r-- | libc/string/sh64/memcpy.S | 202 | ||||
| -rw-r--r-- | libc/string/sh64/memset.S | 92 | ||||
| -rw-r--r-- | libc/string/sh64/strcpy.S | 98 |
5 files changed, 431 insertions, 1 deletions
diff --git a/libc/string/Makefile b/libc/string/Makefile index 464a07e74..2ec8a43be 100644 --- a/libc/string/Makefile +++ b/libc/string/Makefile @@ -23,7 +23,7 @@ DIRS= ifeq ($(TARGET_ARCH),$(wildcard $(TARGET_ARCH))) DIRS = $(TARGET_ARCH) endif -ALL_SUBDIRS = i386 arm +ALL_SUBDIRS = i386 arm sh64 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/sh64/Makefile b/libc/string/sh64/Makefile new file mode 100644 index 000000000..da2c28416 --- /dev/null +++ b/libc/string/sh64/Makefile @@ -0,0 +1,38 @@ +# Makefile for uClibc's sh64 optimized string routines +# +# Copyright (C) 2003 Paul Mundt <lethal@linux-sh.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 + +TOPDIR=../../../ +include $(TOPDIR)Rules.mak + +SSRC= memcpy.S memset.S strcpy.S +SOBJS=$(patsubst %.S,%.o, $(SSRC)) + +all: $(SOBJS) $(LIBC) + +$(LIBC): ar-target + +ar-target: $(SOBJS) + $(AR) $(ARFLAGS) $(LIBC) $(SOBJS) + +$(SOBJS): %.o : %.S + $(CC) $(CFLAGS) -c $< -o $@ + $(STRIPTOOL) -x -R .note -R .comment $*.o + +clean: + $(RM) *.[oa] *~ core + diff --git a/libc/string/sh64/memcpy.S b/libc/string/sh64/memcpy.S new file mode 100644 index 000000000..361e050db --- /dev/null +++ b/libc/string/sh64/memcpy.S @@ -0,0 +1,202 @@ +/* Cloned and hacked for uClibc by Paul Mundt, December 2003 */ +/* Modified by SuperH, Inc. September 2003 */ +! +! Fast SH memcpy +! +! by Toshiyasu Morita (tm@netcom.com) +! hacked by J"orn Rernnecke (joern.rennecke@superh.com) ("o for o-umlaut) +! SH5 code Copyright 2002 SuperH Ltd. +! +! Entry: ARG0: destination pointer +! ARG1: source pointer +! ARG2: byte count +! +! Exit: RESULT: destination pointer +! any other registers in the range r0-r7: trashed +! +! Notes: Usually one wants to do small reads and write a longword, but +! unfortunately it is difficult in some cases to concatanate bytes +! into a longword on the SH, so this does a longword read and small +! writes. +! +! This implementation makes two assumptions about how it is called: +! +! 1.: If the byte count is nonzero, the address of the last byte to be +! copied is unsigned greater than the address of the first byte to +! be copied. This could be easily swapped for a signed comparison, +! but the algorithm used needs some comparison. +! +! 2.: When there are two or three bytes in the last word of an 11-or-more +! bytes memory chunk to b copied, the rest of the word can be read +! without side effects. +! This could be easily changed by increasing the minumum size of +! a fast memcpy and the amount subtracted from r7 before L_2l_loop be 2, +! however, this would cost a few extra cyles on average. +! For SHmedia, the assumption is that any quadword can be read in its +! enirety if at least one byte is included in the copy. +! + + .section .text..SHmedia32,"ax" + .globl memcpy + .type memcpy, @function + + .align 5 +memcpy: + +#define LDUAQ(P,O,D0,D1) ldlo.q P,O,D0; ldhi.q P,O+7,D1 +#define STUAQ(P,O,D0,D1) stlo.q P,O,D0; sthi.q P,O+7,D1 +#define LDUAL(P,O,D0,D1) ldlo.l P,O,D0; ldhi.l P,O+3,D1 +#define STUAL(P,O,D0,D1) stlo.l P,O,D0; sthi.l P,O+3,D1 + + ld.b r3,0,r63 + pta/l Large,tr0 + movi 25,r0 + bgeu/u r4,r0,tr0 + nsb r4,r0 + shlli r0,5,r0 + movi (L1-L0+63*32 + 1) & 0xffff,r1 + sub r1, r0, r0 +L0: ptrel r0,tr0 + add r2,r4,r5 + ptabs r18,tr1 + add r3,r4,r6 + blink tr0,r63 + +/* Rearranged to make cut2 safe */ + .balign 8 +L4_7: /* 4..7 byte memcpy cntd. */ + stlo.l r2, 0, r0 + or r6, r7, r6 + sthi.l r5, -1, r6 + stlo.l r5, -4, r6 + blink tr1,r63 + + .balign 8 +L1: /* 0 byte memcpy */ + nop + blink tr1,r63 + nop + nop + nop + nop + +L2_3: /* 2 or 3 byte memcpy cntd. */ + st.b r5,-1,r6 + blink tr1,r63 + + /* 1 byte memcpy */ + ld.b r3,0,r0 + st.b r2,0,r0 + blink tr1,r63 + +L8_15: /* 8..15 byte memcpy cntd. */ + stlo.q r2, 0, r0 + or r6, r7, r6 + sthi.q r5, -1, r6 + stlo.q r5, -8, r6 + blink tr1,r63 + + /* 2 or 3 byte memcpy */ + ld.b r3,0,r0 + ld.b r2,0,r63 + ld.b r3,1,r1 + st.b r2,0,r0 + pta/l L2_3,tr0 + ld.b r6,-1,r6 + st.b r2,1,r1 + blink tr0, r63 + + /* 4 .. 7 byte memcpy */ + LDUAL (r3, 0, r0, r1) + pta L4_7, tr0 + ldlo.l r6, -4, r7 + or r0, r1, r0 + sthi.l r2, 3, r0 + ldhi.l r6, -1, r6 + blink tr0, r63 + + /* 8 .. 15 byte memcpy */ + LDUAQ (r3, 0, r0, r1) + pta L8_15, tr0 + ldlo.q r6, -8, r7 + or r0, r1, r0 + sthi.q r2, 7, r0 + ldhi.q r6, -1, r6 + blink tr0, r63 + + /* 16 .. 24 byte memcpy */ + LDUAQ (r3, 0, r0, r1) + LDUAQ (r3, 8, r8, r9) + or r0, r1, r0 + sthi.q r2, 7, r0 + or r8, r9, r8 + sthi.q r2, 15, r8 + ldlo.q r6, -8, r7 + ldhi.q r6, -1, r6 + stlo.q r2, 8, r8 + stlo.q r2, 0, r0 + or r6, r7, r6 + sthi.q r5, -1, r6 + stlo.q r5, -8, r6 + blink tr1,r63 + +Large: + ld.b r2, 0, r63 + pta/l Loop_ua, tr1 + ori r3, -8, r7 + sub r2, r7, r22 + sub r3, r2, r6 + add r2, r4, r5 + ldlo.q r3, 0, r0 + addi r5, -16, r5 + movi 64+8, r27 // could subtract r7 from that. + stlo.q r2, 0, r0 + sthi.q r2, 7, r0 + ldx.q r22, r6, r0 + bgtu/l r27, r4, tr1 + + addi r5, -48, r27 + pta/l Loop_line, tr0 + addi r6, 64, r36 + addi r6, -24, r19 + addi r6, -16, r20 + addi r6, -8, r21 + +Loop_line: + ldx.q r22, r36, r63 + alloco r22, 32 + addi r22, 32, r22 + ldx.q r22, r19, r23 + sthi.q r22, -25, r0 + ldx.q r22, r20, r24 + ldx.q r22, r21, r25 + stlo.q r22, -32, r0 + ldx.q r22, r6, r0 + sthi.q r22, -17, r23 + sthi.q r22, -9, r24 + sthi.q r22, -1, r25 + stlo.q r22, -24, r23 + stlo.q r22, -16, r24 + stlo.q r22, -8, r25 + bgeu r27, r22, tr0 + +Loop_ua: + addi r22, 8, r22 + sthi.q r22, -1, r0 + stlo.q r22, -8, r0 + ldx.q r22, r6, r0 + bgtu/l r5, r22, tr1 + + add r3, r4, r7 + ldlo.q r7, -8, r1 + sthi.q r22, 7, r0 + ldhi.q r7, -1, r7 + ptabs r18,tr1 + stlo.q r22, 0, r0 + or r1, r7, r1 + sthi.q r5, 15, r1 + stlo.q r5, 8, r1 + blink tr1, r63 + + .size memcpy, . - memcpy + diff --git a/libc/string/sh64/memset.S b/libc/string/sh64/memset.S new file mode 100644 index 000000000..714fa3fb3 --- /dev/null +++ b/libc/string/sh64/memset.S @@ -0,0 +1,92 @@ +/* Cloned and hacked for uClibc by Paul Mundt, December 2003 */ +/* Modified by SuperH, Inc. September 2003 */ +! +! Fast SH memset +! +! by Toshiyasu Morita (tm@netcom.com) +! +! SH5 code by J"orn Rennecke (joern.rennecke@superh.com) +! Copyright 2002 SuperH Ltd. +! + +#ifdef __LITTLE_ENDIAN__ +#define SHHI shlld +#define SHLO shlrd +#else +#define SHHI shlrd +#define SHLO shlld +#endif + + .section .text..SHmedia32,"ax" + .globl memset + .type memset, @function + + .align 5 + +memset: + pta/l multiquad, tr0 + andi r2, 7, r22 + ptabs r18, tr2 + mshflo.b r3,r3,r3 + add r4, r22, r23 + mperm.w r3, r63, r3 // Fill pattern now in every byte of r3 + + movi 8, r9 + bgtu/u r23, r9, tr0 // multiquad + + beqi/u r4, 0, tr2 // Return with size 0 - ensures no mem accesses + ldlo.q r2, 0, r7 + shlli r4, 2, r4 + movi -1, r8 + SHHI r8, r4, r8 + SHHI r8, r4, r8 + mcmv r7, r8, r3 + stlo.q r2, 0, r3 + blink tr2, r63 + +multiquad: + pta/l lastquad, tr0 + stlo.q r2, 0, r3 + shlri r23, 3, r24 + add r2, r4, r5 + beqi/u r24, 1, tr0 // lastquad + pta/l loop, tr1 + sub r2, r22, r25 + andi r5, -8, r20 // calculate end address and + addi r20, -7*8, r8 // loop end address; This might overflow, so we need + // to use a different test before we start the loop + bge/u r24, r9, tr1 // loop + st.q r25, 8, r3 + st.q r20, -8, r3 + shlri r24, 1, r24 + beqi/u r24, 1, tr0 // lastquad + st.q r25, 16, r3 + st.q r20, -16, r3 + beqi/u r24, 2, tr0 // lastquad + st.q r25, 24, r3 + st.q r20, -24, r3 +lastquad: + sthi.q r5, -1, r3 + blink tr2,r63 + +loop: +!!! alloco r25, 32 // QQQ comment out for short-term fix to SHUK #3895. + // QQQ commenting out is locically correct, but sub-optimal + // QQQ Sean McGoogan - 4th April 2003. + st.q r25, 8, r3 + st.q r25, 16, r3 + st.q r25, 24, r3 + st.q r25, 32, r3 + addi r25, 32, r25 + bgeu/l r8, r25, tr1 // loop + + st.q r20, -40, r3 + st.q r20, -32, r3 + st.q r20, -24, r3 + st.q r20, -16, r3 + st.q r20, -8, r3 + sthi.q r5, -1, r3 + blink tr2,r63 + + .size memset, . - memset + diff --git a/libc/string/sh64/strcpy.S b/libc/string/sh64/strcpy.S new file mode 100644 index 000000000..273e9147c --- /dev/null +++ b/libc/string/sh64/strcpy.S @@ -0,0 +1,98 @@ +/* Cloned and hacked for uClibc by Paul Mundt, December 2003 */ +/* Modified by SuperH, Inc. September 2003 */ +! Entry: arg0: destination +! arg1: source +! Exit: result: destination +! +! SH5 code Copyright 2002 SuperH Ltd. + +#ifdef __LITTLE_ENDIAN__ +#define SHHI shlld +#define SHLO shlrd +#else +#define SHHI shlrd +#define SHLO shlld +#endif + + .section .text..SHmedia32,"ax" + .globl strcpy + .type strcpy, @function + + .align 5 +strcpy: + + pta/l shortstring,tr1 + ldlo.q r3,0,r4 + ptabs r18,tr4 + shlli r3,3,r7 + addi r2, 8, r0 + mcmpeq.b r4,r63,r6 + SHHI r6,r7,r6 + bnei/u r6,0,tr1 // shortstring + pta/l no_lddst, tr2 + ori r3,-8,r23 + sub r2, r23, r0 + sub r3, r2, r21 + addi r21, 8, r20 + ldx.q r0, r21, r5 + pta/l loop, tr0 + ori r2,-8,r22 + mcmpeq.b r5, r63, r6 + bgt/u r22, r23, tr2 // no_lddst + + // r22 < r23 : Need to do a load from the destination. + // r22 == r23 : Doesn't actually need to load from destination, + // but still can be handled here. + ldlo.q r2, 0, r9 + movi -1, r8 + SHLO r8, r7, r8 + mcmv r4, r8, r9 + stlo.q r2, 0, r9 + beqi/l r6, 0, tr0 // loop + + add r5, r63, r4 + addi r0, 8, r0 + blink tr1, r63 // shortstring +no_lddst: + // r22 > r23: note that for r22 == r23 the sthi.q would clobber + // bytes before the destination region. + stlo.q r2, 0, r4 + SHHI r4, r7, r4 + sthi.q r0, -1, r4 + beqi/l r6, 0, tr0 // loop + + add r5, r63, r4 + addi r0, 8, r0 +shortstring: +#ifndef __LITTLE_ENDIAN__ + pta/l shortstring2,tr1 + byterev r4,r4 +#endif +shortstring2: + st.b r0,-8,r4 + andi r4,0xff,r5 + shlri r4,8,r4 + addi r0,1,r0 + bnei/l r5,0,tr1 + blink tr4,r63 // return + + .balign 8 +loop: + stlo.q r0, 0, r5 + ldx.q r0, r20, r4 + addi r0, 16, r0 + sthi.q r0, -9, r5 + mcmpeq.b r4, r63, r6 + bnei/u r6, 0, tr1 // shortstring + ldx.q r0, r21, r5 + stlo.q r0, -8, r4 + sthi.q r0, -1, r4 + mcmpeq.b r5, r63, r6 + beqi/l r6, 0, tr0 // loop + + add r5, r63, r4 + addi r0, 8, r0 + blink tr1, r63 // shortstring + + .size strcpy, . - strcpy + |