Move optimized memcpy and friends and strlen to firmware/asm,

using the new automatic-asm-picking infrastructure.

1 files changed, 0 insertions, 219 deletions

diff --git a/firmware/target/sh/memcpy-sh.S b/firmware/target/sh/memcpy-sh.S
deleted file mode 100644
index e23a579b05..0000000000
--- a/firmware/target/sh/memcpy-sh.S
+++ /dev/null
@@ -1,219 +0,0 @@
-/***************************************************************************
- *             __________               __   ___.
- *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
- *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
- *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
- *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
- *                     \/            \/     \/    \/            \/
- * $Id$
- *
- * Copyright (C) 2004-2005 by Jens Arnold
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ****************************************************************************/
-#include "config.h"
-
-    .section    .icode,"ax",@progbits
-
-    .align      2
-    .global     _memcpy
-    .global     ___memcpy_fwd_entry
-    .type       _memcpy,@function
-
-/* Copies <length> bytes of data in memory from <source> to <dest>
- * This version is optimized for speed
- *
- * arguments:
- *  r4 - destination address
- *  r5 - source address
- *  r6 - length
- *
- * return value:
- *  r0 - destination address (like ANSI version)
- *
- * register usage:
- *  r0 - data / scratch
- *  r1 - 2nd data / scratch
- *  r2 - scratch
- *  r3 - first long bound / adjusted end address (only if >= 11 bytes)
- *  r4 - current dest address
- *  r5 - current source address
- *  r6 - source end address
- *  r7 - stored dest start address
- *
- * The instruction order is devised in a way to utilize the pipelining
- * of the SH1 to the max. The routine also tries to utilize fast page mode.
- */
-
-_memcpy:
-    mov     r4,r7       /* store dest for returning */
-___memcpy_fwd_entry:
-    add     #-8,r4      /* offset for early increment (max. 2 longs) */
-    mov     #11,r0
-    cmp/hs  r0,r6       /* at least 11 bytes to copy? (ensures 2 aligned longs) */
-    add     r5,r6       /* r6 = source_end */
-    bf      .start_b2   /* no: jump directly to byte loop */
-    
-    mov     #3,r0
-    neg     r5,r3
-    and     r0,r3       /* r3 = (4 - align_offset) % 4 */
-    tst     r3,r3       /* already aligned? */
-    bt      .end_b1     /* yes: skip leading byte loop */
-    
-    add     r5,r3       /* r3 = first source long bound */
-
-    /* leading byte loop: copies 0..3 bytes */
-.loop_b1:
-    mov.b   @r5+,r0     /* load byte & increment source addr */
-    add     #1,r4       /* increment dest addr */
-    mov.b   r0,@(7,r4)  /* store byte */
-    cmp/hi  r5,r3       /* runs r5 up to first long bound */
-    bt      .loop_b1
-    /* now r5 is always at a long boundary */
-    /* -> memory reading is done in longs for all dest alignments */
-
-    /* selector for main copy loop */
-.end_b1:
-    mov     #3,r1
-    and     r4,r1       /* r1 = dest alignment offset */
-    mova    .jmptab,r0
-    mov.b   @(r0,r1),r1 /* select appropriate main loop */
-    add     r0,r1
-    mov     r6,r3       /* move end address to r3 */
-    jmp     @r1         /* and jump to it */
-    add     #-7,r3      /* adjust end addr for main loops doing 2 longs/pass */
-    
-    /** main loops, copying 2 longs per pass to profit from fast page mode **/
-
-    /* long aligned destination (fastest) */
-    .align  2
-.loop_do0:
-    mov.l   @r5+,r1     /* load first long & increment source addr */
-    add     #16,r4      /* increment dest addr & account for decrementing stores */
-    mov.l   @r5+,r0     /* load second long & increment source addr */
-    cmp/hi  r5,r3       /* runs r5 up to last or second last long bound */
-    mov.l   r0,@-r4     /* store second long */
-    mov.l   r1,@-r4     /* store first long; NOT ALIGNED - no speed loss here! */
-    bt      .loop_do0
-           
-    add     #4,r3       /* readjust end address */
-    cmp/hi  r5,r3       /* one long left? */
-    bf      .start_b2   /* no, jump to trailing byte loop */
-    
-    mov.l   @r5+,r0     /* load last long & increment source addr */
-    add     #4,r4       /* increment dest addr */
-    bra     .start_b2   /* jump to trailing byte loop */
-    mov.l   r0,@(4,r4)  /* store last long */
-
-    /* word aligned destination (long + 2) */
-    .align  2
-.loop_do2:
-    mov.l   @r5+,r1     /* load first long & increment source addr */
-    add     #16,r4      /* increment dest addr */
-    mov.l   @r5+,r0     /* load second long & increment source addr */
-    cmp/hi  r5,r3       /* runs r5 up to last or second last long bound */
-    mov.w   r0,@-r4     /* store low word of second long */
-    xtrct   r1,r0       /* extract low word of first long & high word of second long */
-    mov.l   r0,@-r4     /* and store as long */
-    swap.w  r1,r0       /* get high word of first long */
-    mov.w   r0,@-r4     /* and store it */
-    bt      .loop_do2
-
-    add     #4,r3       /* readjust end address */
-    cmp/hi  r5,r3       /* one long left? */
-    bf      .start_b2   /* no, jump to trailing byte loop */
-
-    mov.l   @r5+,r0     /* load last long & increment source addr */
-    add     #4,r4       /* increment dest addr */
-    mov.w   r0,@(6,r4)  /* store low word */
-    shlr16  r0          /* get high word */
-    bra     .start_b2   /* jump to trailing byte loop */
-    mov.w   r0,@(4,r4)  /* and store it */
-
-    /* jumptable for loop selector */
-    .align  2
-.jmptab:
-    .byte   .loop_do0 - .jmptab  /* placed in the middle because the SH1 */
-    .byte   .loop_do1 - .jmptab  /* loads bytes sign-extended. Otherwise */
-    .byte   .loop_do2 - .jmptab  /* the last loop would be out of reach */
-    .byte   .loop_do3 - .jmptab  /* of the offset range. */
-
-    /* byte aligned destination (long + 1) */
-    .align  2
-.loop_do1:
-    mov.l   @r5+,r1     /* load first long & increment source addr */
-    add     #16,r4      /* increment dest addr */
-    mov.l   @r5+,r0     /* load second long & increment source addr */
-    cmp/hi  r5,r3       /* runs r5 up to last or second last long bound */
-    mov.b   r0,@-r4     /* store low byte of second long */
-    shlr8   r0          /* get upper 3 bytes */
-    mov     r1,r2       /* copy first long */
-    shll16  r2          /* move low byte of first long all the way up, .. */
-    shll8   r2
-    or      r2,r0       /* ..combine with the 3 bytes of second long.. */
-    mov.l   r0,@-r4     /* ..and store as long */
-    shlr8   r1          /* get middle 2 bytes */
-    mov.w   r1,@-r4     /* store as word */
-    shlr16  r1          /* get upper byte */
-    mov.b   r1,@-r4     /* and store */
-    bt      .loop_do1
-
-    add     #4,r3       /* readjust end address */
-.last_do13:
-    cmp/hi  r5,r3       /* one long left? */
-    bf      .start_b2   /* no, jump to trailing byte loop */
-
-    mov.l   @r5+,r0     /* load last long & increment source addr */
-    add     #12,r4      /* increment dest addr */
-    mov.b   r0,@-r4     /* store low byte */
-    shlr8   r0          /* get middle 2 bytes */
-    mov.w   r0,@-r4     /* store as word */
-    shlr16  r0          /* get upper byte */
-    mov.b   r0,@-r4     /* and store */
-    bra     .start_b2   /* jump to trailing byte loop */
-    add     #-4,r4      /* readjust destination */
-
-    /* byte aligned destination (long + 3) */
-    .align  2
-.loop_do3:
-    mov.l   @r5+,r1     /* load first long & increment source addr */
-    add     #16,r4      /* increment dest addr */
-    mov.l   @r5+,r0     /* load second long & increment source addr */
-    mov     r1,r2       /* copy first long */
-    mov.b   r0,@-r4     /* store low byte of second long */
-    shlr8   r0          /* get middle 2 bytes */
-    mov.w   r0,@-r4     /* store as word */
-    shlr16  r0          /* get upper byte */
-    shll8   r2          /* move lower 3 bytes of first long one up.. */
-    or      r2,r0       /* ..combine with the 1 byte of second long.. */
-    mov.l   r0,@-r4     /* ..and store as long */
-    shlr16  r1          /* get upper byte of first long.. */
-    shlr8   r1
-    cmp/hi  r5,r3       /* runs r5 up to last or second last long bound */
-    mov.b   r1,@-r4     /* ..and store */
-    bt      .loop_do3
-
-    bra     .last_do13  /* handle last longword: reuse routine for (long + 1) */
-    add     #4,r3       /* readjust end address */
-
-    /* trailing byte loop: copies 0..3 bytes (or all for < 11 in total) */
-    .align  2
-.loop_b2:
-    mov.b   @r5+,r0     /* load byte & increment source addr */
-    add     #1,r4       /* increment dest addr */
-    mov.b   r0,@(7,r4)  /* store byte */
-.start_b2:
-    cmp/hi  r5,r6       /* runs r5 up to end address */
-    bt      .loop_b2
-
-    rts
-    mov     r7,r0       /* return dest start address */
-.end:
-    .size   _memcpy,.end-_memcpy