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minix/lib/nbsd_libc/arch/sparc64/string/memcpy.S
Gianluca Guida b6cbf7203b Import unmodified NetBSD libc in trunk 
This patch imports the unmodified current version of NetBSD libc.
The NetBSD includes are in /nbsd_include, while the libc code itself is 
split between lib/nbsd_libc and common/lib/libc.
2011-02-14 19:36:03 +00:00

1958 lines
37 KiB
ArmAsm
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/* $NetBSD: memcpy.S,v 1.2 2001/08/01 05:52:12 eeh Exp $ */
/*
* Copyright (c) 2001 Eduardo E. Horvath
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <machine/asm.h>
#ifndef _LOCORE
#define _LOCORE
#endif
#include <machine/ctlreg.h>
#include <machine/frame.h>
#include <machine/psl.h>
#if defined(LIBC_SCCS) && !defined(lint)
RCSID("$NetBSD: memcpy.S,v 1.2 2001/08/01 05:52:12 eeh Exp $")
#endif /* LIBC_SCCS and not lint */
#define EMPTY nop
#define NOTREACHED ta 1
#define BCOPY_SMALL 16
#define BLOCK_SIZE 64
#if 0
#define ASI_STORE ASI_BLK_COMMIT_P
#else
#define ASI_STORE ASI_BLK_P
#endif
#if 1
/*
* kernel bcopy/memcpy
* Assumes regions do not overlap; has no useful return value.
*
* Must not use %g7 (see copyin/copyout above).
*/
ENTRY(memcpy) /* dest, src, size */
/*
* Swap args for bcopy. Gcc generates calls to memcpy for
* structure assignments.
*/
mov %o0, %o3
mov %o1, %o0
mov %o3, %o1
#endif
ENTRY(bcopy) /* src, dest, size */
#ifdef DEBUG
set pmapdebug, %o4
ld [%o4], %o4
btst 0x80, %o4 ! PDB_COPY
bz,pt %icc, 3f
nop
save %sp, -CC64FSZ, %sp
mov %i0, %o1
set 2f, %o0
mov %i1, %o2
call printf
mov %i2, %o3
! ta 1; nop
restore
.data
2: .asciz "bcopy(%p->%p,%x)\n"
_ALIGN
.text
3:
#endif
/*
* Check for overlaps and punt.
*
* If src <= dest <= src+len we have a problem.
*/
sub %o1, %o0, %o3
cmp %o3, %o2
blu,pn %xcc, Lovbcopy
cmp %o2, BCOPY_SMALL
Lbcopy_start:
bge,pt %xcc, 2f ! if >= this many, go be fancy.
cmp %o2, 256
mov %o1, %o5 ! Save memcpy return value
/*
* Not much to copy, just do it a byte at a time.
*/
deccc %o2 ! while (--len >= 0)
bl 1f
EMPTY
0:
inc %o0
ldsb [%o0 - 1], %o4 ! (++dst)[-1] = *src++;
stb %o4, [%o1]
deccc %o2
bge 0b
inc %o1
1:
retl
mov %o5, %o0
NOTREACHED
/*
* Overlapping bcopies -- punt.
*/
Lovbcopy:
/*
* Since src comes before dst, and the regions might overlap,
* we have to do the copy starting at the end and working backwards.
*
* We could optimize this, but it almost never happens.
*/
mov %o1, %o5 ! Retval
add %o2, %o0, %o0 ! src += len
add %o2, %o1, %o1 ! dst += len
deccc %o2
bl,pn %xcc, 1f
dec %o0
0:
dec %o1
ldsb [%o0], %o4
dec %o0
deccc %o2
bge,pt %xcc, 0b
stb %o4, [%o1]
1:
retl
mov %o5, %o0
/*
* Plenty of data to copy, so try to do it optimally.
*/
2:
#if 1
! If it is big enough, use VIS instructions
bge Lbcopy_block
nop
#endif
Lbcopy_fancy:
!!
!! First align the output to a 8-byte entity
!!
save %sp, -CC64FSZ, %sp
mov %i0, %o0
mov %i1, %o1
mov %i2, %o2
btst 1, %o1
bz,pt %icc, 4f
btst 2, %o1
ldub [%o0], %o4 ! Load 1st byte
deccc 1, %o2
ble,pn %xcc, Lbcopy_finish ! XXXX
inc 1, %o0
stb %o4, [%o1] ! Store 1st byte
inc 1, %o1 ! Update address
btst 2, %o1
4:
bz,pt %icc, 4f
btst 1, %o0
bz,a 1f
lduh [%o0], %o4 ! Load short
ldub [%o0], %o4 ! Load bytes
ldub [%o0+1], %o3
sllx %o4, 8, %o4
or %o3, %o4, %o4
1:
deccc 2, %o2
ble,pn %xcc, Lbcopy_finish ! XXXX
inc 2, %o0
sth %o4, [%o1] ! Store 1st short
inc 2, %o1
4:
btst 4, %o1
bz,pt %xcc, 4f
btst 3, %o0
bz,a,pt %xcc, 1f
lduw [%o0], %o4 ! Load word -1
btst 1, %o0
bz,a,pt %icc, 2f
lduh [%o0], %o4
ldub [%o0], %o4
lduh [%o0+1], %o3
sllx %o4, 16, %o4
or %o4, %o3, %o4
ldub [%o0+3], %o3
sllx %o4, 8, %o4
ba,pt %icc, 1f
or %o4, %o3, %o4
2:
lduh [%o0+2], %o3
sllx %o4, 16, %o4
or %o4, %o3, %o4
1:
deccc 4, %o2
ble,pn %xcc, Lbcopy_finish ! XXXX
inc 4, %o0
st %o4, [%o1] ! Store word
inc 4, %o1
4:
!!
!! We are now 32-bit aligned in the dest.
!!
Lbcopy__common:
and %o0, 7, %o4 ! Shift amount
andn %o0, 7, %o0 ! Source addr
brz,pt %o4, Lbcopy_noshift8 ! No shift version...
sllx %o4, 3, %o4 ! In bits
mov 8<<3, %o3
ldx [%o0], %l0 ! Load word -1
sub %o3, %o4, %o3 ! Reverse shift
deccc 16*8, %o2 ! Have enough room?
sllx %l0, %o4, %l0
bl,pn %xcc, 2f
and %o3, 0x38, %o3
Lbcopy_unrolled8:
/*
* This is about as close to optimal as you can get, since
* the shifts require EU0 and cannot be paired, and you have
* 3 dependent operations on the data.
*/
! ldx [%o0+0*8], %l0 ! Already done
! sllx %l0, %o4, %l0 ! Already done
ldx [%o0+1*8], %l1
ldx [%o0+2*8], %l2
ldx [%o0+3*8], %l3
ldx [%o0+4*8], %l4
ldx [%o0+5*8], %l5
ldx [%o0+6*8], %l6
#if 1
ba,pt %icc, 1f
ldx [%o0+7*8], %l7
.align 8
1:
srlx %l1, %o3, %g1
inc 8*8, %o0
sllx %l1, %o4, %l1
or %g1, %l0, %o5
ldx [%o0+0*8], %l0
stx %o5, [%o1+0*8]
srlx %l2, %o3, %g1
sllx %l2, %o4, %l2
or %g1, %l1, %o5
ldx [%o0+1*8], %l1
stx %o5, [%o1+1*8]
srlx %l3, %o3, %g1
sllx %l3, %o4, %l3
or %g1, %l2, %o5
ldx [%o0+2*8], %l2
stx %o5, [%o1+2*8]
srlx %l4, %o3, %g1
sllx %l4, %o4, %l4
or %g1, %l3, %o5
ldx [%o0+3*8], %l3
stx %o5, [%o1+3*8]
srlx %l5, %o3, %g1
sllx %l5, %o4, %l5
or %g1, %l4, %o5
ldx [%o0+4*8], %l4
stx %o5, [%o1+4*8]
srlx %l6, %o3, %g1
sllx %l6, %o4, %l6
or %g1, %l5, %o5
ldx [%o0+5*8], %l5
stx %o5, [%o1+5*8]
srlx %l7, %o3, %g1
sllx %l7, %o4, %l7
or %g1, %l6, %o5
ldx [%o0+6*8], %l6
stx %o5, [%o1+6*8]
srlx %l0, %o3, %g1
deccc 8*8, %o2 ! Have enough room?
sllx %l0, %o4, %l0 ! Next loop
or %g1, %l7, %o5
ldx [%o0+7*8], %l7
stx %o5, [%o1+7*8]
bge,pt %xcc, 1b
inc 8*8, %o1
Lbcopy_unrolled8_cleanup:
!!
!! Finished 8 byte block, unload the regs.
!!
srlx %l1, %o3, %g1
inc 7*8, %o0
sllx %l1, %o4, %l1
or %g1, %l0, %o5
stx %o5, [%o1+0*8]
srlx %l2, %o3, %g1
sllx %l2, %o4, %l2
or %g1, %l1, %o5
stx %o5, [%o1+1*8]
srlx %l3, %o3, %g1
sllx %l3, %o4, %l3
or %g1, %l2, %o5
stx %o5, [%o1+2*8]
srlx %l4, %o3, %g1
sllx %l4, %o4, %l4
or %g1, %l3, %o5
stx %o5, [%o1+3*8]
srlx %l5, %o3, %g1
sllx %l5, %o4, %l5
or %g1, %l4, %o5
stx %o5, [%o1+4*8]
srlx %l6, %o3, %g1
sllx %l6, %o4, %l6
or %g1, %l5, %o5
stx %o5, [%o1+5*8]
srlx %l7, %o3, %g1
sllx %l7, %o4, %l7
or %g1, %l6, %o5
stx %o5, [%o1+6*8]
inc 7*8, %o1
mov %l7, %l0 ! Save our unused data
dec 7*8, %o2
#else
/*
* This version also handles aligned copies at almost the
* same speed. It should take the same number of cycles
* as the previous version, but is slightly slower, probably
* due to i$ issues.
*/
ldx [%o0+7*8], %l7
ba,pt %icc, 1f
clr %g1
.align 32
1:
srlx %l1, %o3, %g1
bz,pn %xcc, 3f
inc 8*8, %o0
sllx %l1, %o4, %l1
or %g1, %l0, %o5
ba,pt %icc, 4f
ldx [%o0+0*8], %l0
nop
3:
mov %l0, %o5
ldx [%o0+0*8], %l0
4:
bz,pn %icc, 3f
stx %o5, [%o1+0*8]
srlx %l2, %o3, %g1
sllx %l2, %o4, %l2
3:
or %g1, %l1, %o5
ldx [%o0+1*8], %l1
bz,pn %icc, 3f
stx %o5, [%o1+1*8]
srlx %l3, %o3, %g1
sllx %l3, %o4, %l3
3:
or %g1, %l2, %o5
ldx [%o0+2*8], %l2
bz,pn %icc, 3f
stx %o5, [%o1+2*8]
srlx %l4, %o3, %g1
sllx %l4, %o4, %l4
3:
or %g1, %l3, %o5
ldx [%o0+3*8], %l3
bz,pn %icc, 3f
stx %o5, [%o1+3*8]
srlx %l5, %o3, %g1
sllx %l5, %o4, %l5
3:
or %g1, %l4, %o5
ldx [%o0+4*8], %l4
bz,pn %icc, 3f
stx %o5, [%o1+4*8]
srlx %l6, %o3, %g1
sllx %l6, %o4, %l6
3:
or %g1, %l5, %o5
ldx [%o0+5*8], %l5
bz,pn %icc, 3f
stx %o5, [%o1+5*8]
srlx %l7, %o3, %g1
sllx %l7, %o4, %l7
3:
or %g1, %l6, %o5
ldx [%o0+6*8], %l6
bz,pn %icc, 3f
stx %o5, [%o1+6*8]
srlx %l0, %o3, %g1
sllx %l0, %o4, %l0 ! Next loop
3:
or %g1, %l7, %o5
ldx [%o0+7*8], %l7
deccc 8*8, %o2 ! Have enough room?
stx %o5, [%o1+7*8]
inc 8*8, %o1
bge,pt %xcc, 1b
tst %o4
!!
!! Now unload all those regs
!!
Lbcopy_unrolled8_cleanup:
srlx %l1, %o3, %g1
bz,pn %xcc, 3f
inc 7*8, %o0 ! Point at the last load
sllx %l1, %o4, %l1
ba,pt %icc, 4f
or %g1, %l0, %o5
3:
mov %l0, %o5
4:
bz,pn %icc, 3f
stx %o5, [%o1+0*8]
srlx %l2, %o3, %g1
sllx %l2, %o4, %l2
3:
or %g1, %l1, %o5
bz,pn %icc, 3f
stx %o5, [%o1+1*8]
srlx %l3, %o3, %g1
sllx %l3, %o4, %l3
3:
or %g1, %l2, %o5
bz,pn %icc, 3f
stx %o5, [%o1+2*8]
srlx %l4, %o3, %g1
sllx %l4, %o4, %l4
3:
or %g1, %l3, %o5
bz,pn %icc, 3f
stx %o5, [%o1+3*8]
srlx %l5, %o3, %g1
sllx %l5, %o4, %l5
3:
or %g1, %l4, %o5
bz,pn %icc, 3f
stx %o5, [%o1+4*8]
srlx %l6, %o3, %g1
sllx %l6, %o4, %l6
3:
or %g1, %l5, %o5
bz,pn %icc, 3f
stx %o5, [%o1+5*8]
srlx %l7, %o3, %g1
sllx %l7, %o4, %l7
3:
or %g1, %l6, %o5
mov %l7, %l0 ! Shuffle to %l0
stx %o5, [%o1+6*8]
or %g1, %l7, %o5
dec 7*8, %o2
inc 7*8, %o1 ! Point at last store
#endif
2:
inccc 16*8, %o2
bz,pn %icc, Lbcopy_complete
!! Unrolled 8 times
Lbcopy_aligned8:
! ldx [%o0], %l0 ! Already done
! sllx %l0, %o4, %l0 ! Shift high word
deccc 8, %o2 ! Pre-decrement
bl,pn %xcc, Lbcopy_finish
1:
ldx [%o0+8], %l1 ! Load word 0
inc 8, %o0
srlx %l1, %o3, %o5
or %o5, %l0, %o5 ! Combine
stx %o5, [%o1] ! Store result
inc 8, %o1
deccc 8, %o2
bge,pn %xcc, 1b
sllx %l1, %o4, %l0
btst 7, %o2 ! Done?
bz,pt %xcc, Lbcopy_complete
!!
!! Loadup the last dregs into %l0 and shift it into place
!!
srlx %o3, 3, %o5 ! # bytes in %l0
dec 8, %o5 ! - 8
!! n-8 - (by - 8) -> n - by
subcc %o2, %o5, %g0 ! # bytes we need
ble,pt %icc, Lbcopy_finish
nop
ldx [%o0+8], %l1 ! Need another word
srlx %l1, %o3, %l1
ba,pt %icc, Lbcopy_finish
or %l0, %l1, %l0 ! All loaded up.
Lbcopy_noshift8:
deccc 8*8, %o2 ! Have enough room?
bl,pn %xcc, 2f
nop
ba,pt %icc, 1f
nop
.align 32
1:
ldx [%o0+0*8], %l0
ldx [%o0+1*8], %l1
ldx [%o0+2*8], %l2
ldx [%o0+3*8], %l3
stx %l0, [%o1+0*8]
stx %l1, [%o1+1*8]
stx %l2, [%o1+2*8]
stx %l3, [%o1+3*8]
ldx [%o0+4*8], %l4
ldx [%o0+5*8], %l5
ldx [%o0+6*8], %l6
ldx [%o0+7*8], %l7
inc 8*8, %o0
stx %l4, [%o1+4*8]
stx %l5, [%o1+5*8]
deccc 8*8, %o2
stx %l6, [%o1+6*8]
stx %l7, [%o1+7*8]
stx %l2, [%o1+2*8]
bge,pt %xcc, 1b
inc 8*8, %o1
2:
inc 8*8, %o2
1:
deccc 8, %o2
bl,pn %icc, 1f ! < 0 --> sub word
nop
ldx [%o0], %o5
inc 8, %o0
stx %o5, [%o1]
bg,pt %icc, 1b ! Exactly 0 --> done
inc 8, %o1
1:
btst 7, %o2 ! Done?
bz,pt %xcc, Lbcopy_complete
clr %o4
ldx [%o0], %l0
Lbcopy_finish:
brz,pn %o2, 2f ! 100% complete?
cmp %o2, 8 ! Exactly 8 bytes?
bz,a,pn %xcc, 2f
stx %l0, [%o1]
btst 4, %o2 ! Word store?
bz %xcc, 1f
srlx %l0, 32, %o5 ! Shift high word down
stw %o5, [%o1]
inc 4, %o1
mov %l0, %o5 ! Operate on the low bits
1:
btst 2, %o2
mov %o5, %l0
bz 1f
srlx %l0, 16, %o5
sth %o5, [%o1] ! Store short
inc 2, %o1
mov %l0, %o5 ! Operate on low bytes
1:
mov %o5, %l0
btst 1, %o2 ! Byte aligned?
bz 2f
srlx %l0, 8, %o5
stb %o5, [%o1] ! Store last byte
inc 1, %o1 ! Update address
2:
Lbcopy_complete:
#if 0
!!
!! verify copy success.
!!
mov %i0, %o2
mov %i1, %o4
mov %i2, %l4
0:
ldub [%o2], %o1
inc %o2
ldub [%o4], %o3
inc %o4
cmp %o3, %o1
bnz 1f
dec %l4
brnz %l4, 0b
nop
ba 2f
nop
1:
set 0f, %o0
call printf
sub %i2, %l4, %o5
set 1f, %o0
mov %i0, %o1
mov %i1, %o2
call printf
mov %i2, %o3
ta 1
.data
0: .asciz "bcopy failed: %x@%p != %x@%p byte %d\n"
1: .asciz "bcopy(%p, %p, %lx)\n"
.align 8
.text
2:
#endif
ret
restore %i1, %g0, %o0
#if 1
/*
* Block copy. Useful for >256 byte copies.
*
* Benchmarking has shown this always seems to be slower than
* the integer version, so this is disabled. Maybe someone will
* figure out why sometime.
*/
Lbcopy_block:
#ifdef _KERNEL
/*
* Kernel:
*
* Here we use VIS instructions to do a block clear of a page.
* But before we can do that we need to save and enable the FPU.
* The last owner of the FPU registers is fpproc, and
* fpproc->p_md.md_fpstate is the current fpstate. If that's not
* null, call savefpstate() with it to store our current fp state.
*
* Next, allocate an aligned fpstate on the stack. We will properly
* nest calls on a particular stack so this should not be a problem.
*
* Now we grab either curproc (or if we're on the interrupt stack
* proc0). We stash its existing fpstate in a local register and
* put our new fpstate in curproc->p_md.md_fpstate. We point
* fpproc at curproc (or proc0) and enable the FPU.
*
* If we are ever preempted, our FPU state will be saved in our
* fpstate. Then, when we're resumed and we take an FPDISABLED
* trap, the trap handler will be able to fish our FPU state out
* of curproc (or proc0).
*
* On exiting this routine we undo the damage: restore the original
* pointer to curproc->p_md.md_fpstate, clear our fpproc, and disable
* the MMU.
*
*
* Register usage, Kernel only (after save):
*
* %i0 src
* %i1 dest
* %i2 size
*
* %l0 XXXX DEBUG old fpstate
* %l1 fpproc (hi bits only)
* %l2 orig fpproc
* %l3 orig fpstate
* %l5 curproc
* %l6 old fpstate
*
* Register ussage, Kernel and user:
*
* %g1 src (retval for memcpy)
*
* %o0 src
* %o1 dest
* %o2 end dest
* %o5 last safe fetchable address
*/
#if 1
ENABLE_FPU(0)
#else
save %sp, -(CC64FSZ+FS_SIZE+BLOCK_SIZE), %sp ! Allocate an fpstate
sethi %hi(FPPROC), %l1
LDPTR [%l1 + %lo(FPPROC)], %l2 ! Load fpproc
add %sp, (CC64FSZ+STKB+BLOCK_SIZE-1), %l0 ! Calculate pointer to fpstate
brz,pt %l2, 1f ! fpproc == NULL?
andn %l0, BLOCK_ALIGN, %l0 ! And make it block aligned
LDPTR [%l2 + P_FPSTATE], %l3
brz,pn %l3, 1f ! Make sure we have an fpstate
mov %l3, %o0
call _C_LABEL(savefpstate) ! Save the old fpstate
set EINTSTACK-STKB, %l4 ! Are we on intr stack?
cmp %sp, %l4
bgu,pt %xcc, 1f
set INTSTACK-STKB, %l4
cmp %sp, %l4
blu %xcc, 1f
0:
sethi %hi(_C_LABEL(proc0)), %l4 ! Yes, use proc0
ba,pt %xcc, 2f ! XXXX needs to change to CPUs idle proc
or %l4, %lo(_C_LABEL(proc0)), %l5
1:
sethi %hi(CURPROC), %l4 ! Use curproc
LDPTR [%l4 + %lo(CURPROC)], %l5
brz,pn %l5, 0b ! If curproc is NULL need to use proc0
nop
2:
LDPTR [%l5 + P_FPSTATE], %l6 ! Save old fpstate
STPTR %l0, [%l5 + P_FPSTATE] ! Insert new fpstate
STPTR %l5, [%l1 + %lo(FPPROC)] ! Set new fpproc
wr %g0, FPRS_FEF, %fprs ! Enable FPU
#endif
mov %i0, %o0 ! Src addr.
mov %i1, %o1 ! Store our dest ptr here.
mov %i2, %o2 ! Len counter
#endif
!!
!! First align the output to a 64-bit entity
!!
mov %o1, %g1 ! memcpy retval
add %o0, %o2, %o5 ! End of source block
andn %o0, 7, %o3 ! Start of block
dec %o5
fzero %f0
andn %o5, BLOCK_ALIGN, %o5 ! Last safe addr.
ldd [%o3], %f2 ! Load 1st word
dec 8, %o3 ! Move %o3 1 word back
btst 1, %o1
bz 4f
mov -7, %o4 ! Lowest src addr possible
alignaddr %o0, %o4, %o4 ! Base addr for load.
cmp %o3, %o4
be,pt %xcc, 1f ! Already loaded?
mov %o4, %o3
fmovd %f2, %f0 ! No. Shift
ldd [%o3+8], %f2 ! And load
1:
faligndata %f0, %f2, %f4 ! Isolate 1st byte
stda %f4, [%o1] ASI_FL8_P ! Store 1st byte
inc 1, %o1 ! Update address
inc 1, %o0
dec 1, %o2
4:
btst 2, %o1
bz 4f
mov -6, %o4 ! Calculate src - 6
alignaddr %o0, %o4, %o4 ! calculate shift mask and dest.
cmp %o3, %o4 ! Addresses same?
be,pt %xcc, 1f
mov %o4, %o3
fmovd %f2, %f0 ! Shuffle data
ldd [%o3+8], %f2 ! Load word 0
1:
faligndata %f0, %f2, %f4 ! Move 1st short low part of f8
stda %f4, [%o1] ASI_FL16_P ! Store 1st short
dec 2, %o2
inc 2, %o1
inc 2, %o0
4:
brz,pn %o2, Lbcopy_blockfinish ! XXXX
btst 4, %o1
bz 4f
mov -4, %o4
alignaddr %o0, %o4, %o4 ! calculate shift mask and dest.
cmp %o3, %o4 ! Addresses same?
beq,pt %xcc, 1f
mov %o4, %o3
fmovd %f2, %f0 ! Shuffle data
ldd [%o3+8], %f2 ! Load word 0
1:
faligndata %f0, %f2, %f4 ! Move 1st short low part of f8
st %f5, [%o1] ! Store word
dec 4, %o2
inc 4, %o1
inc 4, %o0
4:
brz,pn %o2, Lbcopy_blockfinish ! XXXX
!!
!! We are now 32-bit aligned in the dest.
!!
Lbcopy_block_common:
mov -0, %o4
alignaddr %o0, %o4, %o4 ! base - shift
cmp %o3, %o4 ! Addresses same?
beq,pt %xcc, 1f
mov %o4, %o3
fmovd %f2, %f0 ! Shuffle data
ldd [%o3+8], %f2 ! Load word 0
1:
add %o3, 8, %o0 ! now use %o0 for src
!!
!! Continue until our dest is block aligned
!!
Lbcopy_block_aligned8:
1:
brz %o2, Lbcopy_blockfinish
btst BLOCK_ALIGN, %o1 ! Block aligned?
bz 1f
faligndata %f0, %f2, %f4 ! Generate result
deccc 8, %o2
ble,pn %icc, Lbcopy_blockfinish ! Should never happen
fmovd %f4, %f48
std %f4, [%o1] ! Store result
inc 8, %o1
fmovd %f2, %f0
inc 8, %o0
ba,pt %xcc, 1b ! Not yet.
ldd [%o0], %f2 ! Load next part
Lbcopy_block_aligned64:
1:
/*
* 64-byte aligned -- ready for block operations.
*
* Here we have the destination block aligned, but the
* source pointer may not be. Sub-word alignment will
* be handled by faligndata instructions. But the source
* can still be potentially aligned to 8 different words
* in our 64-bit block, so we have 8 different copy routines.
*
* Once we figure out our source alignment, we branch
* to the appropriate copy routine, which sets up the
* alignment for faligndata and loads (sets) the values
* into the source registers and does the copy loop.
*
* When were down to less than 1 block to store, we
* exit the copy loop and execute cleanup code.
*
* Block loads and stores are not properly interlocked.
* Stores save one reg/cycle, so you can start overwriting
* registers the cycle after the store is issued.
*
* Block loads require a block load to a different register
* block or a membar #Sync before accessing the loaded
* data.
*
* Since the faligndata instructions may be offset as far
* as 7 registers into a block (if you are shifting source
* 7 -> dest 0), you need 3 source register blocks for full
* performance: one you are copying, one you are loading,
* and one for interlocking. Otherwise, we would need to
* sprinkle the code with membar #Sync and lose the advantage
* of running faligndata in parallel with block stores. This
* means we are fetching a full 128 bytes ahead of the stores.
* We need to make sure the prefetch does not inadvertently
* cross a page boundary and fault on data that we will never
* store.
*
*/
#if 1
and %o0, BLOCK_ALIGN, %o3
srax %o3, 3, %o3 ! Isolate the offset
brz %o3, L100 ! 0->0
btst 4, %o3
bnz %xcc, 4f
btst 2, %o3
bnz %xcc, 2f
btst 1, %o3
ba,pt %xcc, L101 ! 0->1
nop /* XXX spitfire bug */
2:
bz %xcc, L102 ! 0->2
nop
ba,pt %xcc, L103 ! 0->3
nop /* XXX spitfire bug */
4:
bnz %xcc, 2f
btst 1, %o3
bz %xcc, L104 ! 0->4
nop
ba,pt %xcc, L105 ! 0->5
nop /* XXX spitfire bug */
2:
bz %xcc, L106 ! 0->6
nop
ba,pt %xcc, L107 ! 0->7
nop /* XXX spitfire bug */
#else
!!
!! Isolate the word offset, which just happens to be
!! the slot in our jump table.
!!
!! This is 6 insns, most of which cannot be paired,
!! which is about the same as the above version.
!!
rd %pc, %o4
1:
and %o0, 0x31, %o3
add %o3, (Lbcopy_block_jmp - 1b), %o3
jmpl %o4 + %o3, %g0
nop
!!
!! Jump table
!!
Lbcopy_block_jmp:
ba,a,pt %xcc, L100
nop
ba,a,pt %xcc, L101
nop
ba,a,pt %xcc, L102
nop
ba,a,pt %xcc, L103
nop
ba,a,pt %xcc, L104
nop
ba,a,pt %xcc, L105
nop
ba,a,pt %xcc, L106
nop
ba,a,pt %xcc, L107
nop
#endif
!!
!! Source is block aligned.
!!
!! Just load a block and go.
!!
L100:
#ifdef RETURN_NAME
sethi %hi(1f), %g1
ba,pt %icc, 2f
or %g1, %lo(1f), %g1
1:
.asciz "L100"
.align 8
2:
#endif
fmovd %f0 , %f62
ldda [%o0] ASI_BLK_P, %f0
inc BLOCK_SIZE, %o0
cmp %o0, %o5
bleu,a,pn %icc, 3f
ldda [%o0] ASI_BLK_P, %f16
ba,pt %icc, 3f
membar #Sync
.align 32 ! ICache align.
3:
faligndata %f62, %f0, %f32
inc BLOCK_SIZE, %o0
faligndata %f0, %f2, %f34
dec BLOCK_SIZE, %o2
faligndata %f2, %f4, %f36
cmp %o0, %o5
faligndata %f4, %f6, %f38
faligndata %f6, %f8, %f40
faligndata %f8, %f10, %f42
faligndata %f10, %f12, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f12, %f14, %f46
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f48
membar #Sync
2:
stda %f32, [%o1] ASI_STORE
faligndata %f14, %f16, %f32
inc BLOCK_SIZE, %o0
faligndata %f16, %f18, %f34
inc BLOCK_SIZE, %o1
faligndata %f18, %f20, %f36
dec BLOCK_SIZE, %o2
faligndata %f20, %f22, %f38
cmp %o0, %o5
faligndata %f22, %f24, %f40
faligndata %f24, %f26, %f42
faligndata %f26, %f28, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f28, %f30, %f46
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f0
membar #Sync
2:
stda %f32, [%o1] ASI_STORE
faligndata %f30, %f48, %f32
inc BLOCK_SIZE, %o0
faligndata %f48, %f50, %f34
inc BLOCK_SIZE, %o1
faligndata %f50, %f52, %f36
dec BLOCK_SIZE, %o2
faligndata %f52, %f54, %f38
cmp %o0, %o5
faligndata %f54, %f56, %f40
faligndata %f56, %f58, %f42
faligndata %f58, %f60, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f60, %f62, %f46
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f16 ! Increment is at top
membar #Sync
2:
stda %f32, [%o1] ASI_STORE
ba 3b
inc BLOCK_SIZE, %o1
!!
!! Source at BLOCK_ALIGN+8
!!
!! We need to load almost 1 complete block by hand.
!!
L101:
#ifdef RETURN_NAME
sethi %hi(1f), %g1
ba,pt %icc, 2f
or %g1, %lo(1f), %g1
1:
.asciz "L101"
.align 8
2:
#endif
! fmovd %f0, %f0 ! Hoist fmovd
ldd [%o0], %f2
inc 8, %o0
ldd [%o0], %f4
inc 8, %o0
ldd [%o0], %f6
inc 8, %o0
ldd [%o0], %f8
inc 8, %o0
ldd [%o0], %f10
inc 8, %o0
ldd [%o0], %f12
inc 8, %o0
ldd [%o0], %f14
inc 8, %o0
cmp %o0, %o5
bleu,a,pn %icc, 3f
ldda [%o0] ASI_BLK_P, %f16
membar #Sync
3:
faligndata %f0, %f2, %f32
inc BLOCK_SIZE, %o0
faligndata %f2, %f4, %f34
cmp %o0, %o5
faligndata %f4, %f6, %f36
dec BLOCK_SIZE, %o2
faligndata %f6, %f8, %f38
faligndata %f8, %f10, %f40
faligndata %f10, %f12, %f42
faligndata %f12, %f14, %f44
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f48
membar #Sync
2:
brlez,pn %o2, Lbcopy_blockdone
faligndata %f14, %f16, %f46
stda %f32, [%o1] ASI_STORE
faligndata %f16, %f18, %f32
inc BLOCK_SIZE, %o0
faligndata %f18, %f20, %f34
inc BLOCK_SIZE, %o1
faligndata %f20, %f22, %f36
cmp %o0, %o5
faligndata %f22, %f24, %f38
dec BLOCK_SIZE, %o2
faligndata %f24, %f26, %f40
faligndata %f26, %f28, %f42
faligndata %f28, %f30, %f44
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f0
membar #Sync
2:
brlez,pn %o2, Lbcopy_blockdone
faligndata %f30, %f48, %f46
stda %f32, [%o1] ASI_STORE
faligndata %f48, %f50, %f32
inc BLOCK_SIZE, %o0
faligndata %f50, %f52, %f34
inc BLOCK_SIZE, %o1
faligndata %f52, %f54, %f36
cmp %o0, %o5
faligndata %f54, %f56, %f38
dec BLOCK_SIZE, %o2
faligndata %f56, %f58, %f40
faligndata %f58, %f60, %f42
faligndata %f60, %f62, %f44
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f16
membar #Sync
2:
brlez,pn %o2, Lbcopy_blockdone
faligndata %f62, %f0, %f46
stda %f32, [%o1] ASI_STORE
ba 3b
inc BLOCK_SIZE, %o1
!!
!! Source at BLOCK_ALIGN+16
!!
!! We need to load 6 doubles by hand.
!!
L102:
#ifdef RETURN_NAME
sethi %hi(1f), %g1
ba,pt %icc, 2f
or %g1, %lo(1f), %g1
1:
.asciz "L102"
.align 8
2:
#endif
ldd [%o0], %f4
inc 8, %o0
fmovd %f0, %f2 ! Hoist fmovd
ldd [%o0], %f6
inc 8, %o0
ldd [%o0], %f8
inc 8, %o0
ldd [%o0], %f10
inc 8, %o0
ldd [%o0], %f12
inc 8, %o0
ldd [%o0], %f14
inc 8, %o0
cmp %o0, %o5
bleu,a,pn %icc, 3f
ldda [%o0] ASI_BLK_P, %f16
membar #Sync
3:
faligndata %f2, %f4, %f32
inc BLOCK_SIZE, %o0
faligndata %f4, %f6, %f34
cmp %o0, %o5
faligndata %f6, %f8, %f36
dec BLOCK_SIZE, %o2
faligndata %f8, %f10, %f38
faligndata %f10, %f12, %f40
faligndata %f12, %f14, %f42
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f48
membar #Sync
2:
faligndata %f14, %f16, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f16, %f18, %f46
stda %f32, [%o1] ASI_STORE
faligndata %f18, %f20, %f32
inc BLOCK_SIZE, %o0
faligndata %f20, %f22, %f34
inc BLOCK_SIZE, %o1
faligndata %f22, %f24, %f36
cmp %o0, %o5
faligndata %f24, %f26, %f38
dec BLOCK_SIZE, %o2
faligndata %f26, %f28, %f40
faligndata %f28, %f30, %f42
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f0
membar #Sync
2:
faligndata %f30, %f48, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f48, %f50, %f46
stda %f32, [%o1] ASI_STORE
faligndata %f50, %f52, %f32
inc BLOCK_SIZE, %o0
faligndata %f52, %f54, %f34
inc BLOCK_SIZE, %o1
faligndata %f54, %f56, %f36
cmp %o0, %o5
faligndata %f56, %f58, %f38
dec BLOCK_SIZE, %o2
faligndata %f58, %f60, %f40
faligndata %f60, %f62, %f42
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f16
membar #Sync
2:
faligndata %f62, %f0, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f0, %f2, %f46
stda %f32, [%o1] ASI_STORE
ba 3b
inc BLOCK_SIZE, %o1
!!
!! Source at BLOCK_ALIGN+24
!!
!! We need to load 5 doubles by hand.
!!
L103:
#ifdef RETURN_NAME
sethi %hi(1f), %g1
ba,pt %icc, 2f
or %g1, %lo(1f), %g1
1:
.asciz "L103"
.align 8
2:
#endif
fmovd %f0, %f4
ldd [%o0], %f6
inc 8, %o0
ldd [%o0], %f8
inc 8, %o0
ldd [%o0], %f10
inc 8, %o0
ldd [%o0], %f12
inc 8, %o0
ldd [%o0], %f14
inc 8, %o0
cmp %o0, %o5
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f16
membar #Sync
2:
inc BLOCK_SIZE, %o0
3:
faligndata %f4, %f6, %f32
cmp %o0, %o5
faligndata %f6, %f8, %f34
dec BLOCK_SIZE, %o2
faligndata %f8, %f10, %f36
faligndata %f10, %f12, %f38
faligndata %f12, %f14, %f40
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f48
membar #Sync
2:
faligndata %f14, %f16, %f42
inc BLOCK_SIZE, %o0
faligndata %f16, %f18, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f18, %f20, %f46
stda %f32, [%o1] ASI_STORE
faligndata %f20, %f22, %f32
cmp %o0, %o5
faligndata %f22, %f24, %f34
dec BLOCK_SIZE, %o2
faligndata %f24, %f26, %f36
inc BLOCK_SIZE, %o1
faligndata %f26, %f28, %f38
faligndata %f28, %f30, %f40
ble,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f0
membar #Sync
2:
faligndata %f30, %f48, %f42
inc BLOCK_SIZE, %o0
faligndata %f48, %f50, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f50, %f52, %f46
stda %f32, [%o1] ASI_STORE
faligndata %f52, %f54, %f32
cmp %o0, %o5
faligndata %f54, %f56, %f34
dec BLOCK_SIZE, %o2
faligndata %f56, %f58, %f36
faligndata %f58, %f60, %f38
inc BLOCK_SIZE, %o1
faligndata %f60, %f62, %f40
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f16
membar #Sync
2:
faligndata %f62, %f0, %f42
inc BLOCK_SIZE, %o0
faligndata %f0, %f2, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f2, %f4, %f46
stda %f32, [%o1] ASI_STORE
ba 3b
inc BLOCK_SIZE, %o1
!!
!! Source at BLOCK_ALIGN+32
!!
!! We need to load 4 doubles by hand.
!!
L104:
#ifdef RETURN_NAME
sethi %hi(1f), %g1
ba,pt %icc, 2f
or %g1, %lo(1f), %g1
1:
.asciz "L104"
.align 8
2:
#endif
fmovd %f0, %f6
ldd [%o0], %f8
inc 8, %o0
ldd [%o0], %f10
inc 8, %o0
ldd [%o0], %f12
inc 8, %o0
ldd [%o0], %f14
inc 8, %o0
cmp %o0, %o5
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f16
membar #Sync
2:
inc BLOCK_SIZE, %o0
3:
faligndata %f6, %f8, %f32
cmp %o0, %o5
faligndata %f8, %f10, %f34
dec BLOCK_SIZE, %o2
faligndata %f10, %f12, %f36
faligndata %f12, %f14, %f38
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f48
membar #Sync
2:
faligndata %f14, %f16, %f40
faligndata %f16, %f18, %f42
inc BLOCK_SIZE, %o0
faligndata %f18, %f20, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f20, %f22, %f46
stda %f32, [%o1] ASI_STORE
faligndata %f22, %f24, %f32
cmp %o0, %o5
faligndata %f24, %f26, %f34
faligndata %f26, %f28, %f36
inc BLOCK_SIZE, %o1
faligndata %f28, %f30, %f38
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f0
membar #Sync
2:
faligndata %f30, %f48, %f40
dec BLOCK_SIZE, %o2
faligndata %f48, %f50, %f42
inc BLOCK_SIZE, %o0
faligndata %f50, %f52, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f52, %f54, %f46
stda %f32, [%o1] ASI_STORE
faligndata %f54, %f56, %f32
cmp %o0, %o5
faligndata %f56, %f58, %f34
faligndata %f58, %f60, %f36
inc BLOCK_SIZE, %o1
faligndata %f60, %f62, %f38
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f16
membar #Sync
2:
faligndata %f62, %f0, %f40
dec BLOCK_SIZE, %o2
faligndata %f0, %f2, %f42
inc BLOCK_SIZE, %o0
faligndata %f2, %f4, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f4, %f6, %f46
stda %f32, [%o1] ASI_STORE
ba 3b
inc BLOCK_SIZE, %o1
!!
!! Source at BLOCK_ALIGN+40
!!
!! We need to load 3 doubles by hand.
!!
L105:
#ifdef RETURN_NAME
sethi %hi(1f), %g1
ba,pt %icc, 2f
or %g1, %lo(1f), %g1
1:
.asciz "L105"
.align 8
2:
#endif
fmovd %f0, %f8
ldd [%o0], %f10
inc 8, %o0
ldd [%o0], %f12
inc 8, %o0
ldd [%o0], %f14
inc 8, %o0
cmp %o0, %o5
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f16
membar #Sync
2:
inc BLOCK_SIZE, %o0
3:
faligndata %f8, %f10, %f32
cmp %o0, %o5
faligndata %f10, %f12, %f34
faligndata %f12, %f14, %f36
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f48
membar #Sync
2:
faligndata %f14, %f16, %f38
dec BLOCK_SIZE, %o2
faligndata %f16, %f18, %f40
inc BLOCK_SIZE, %o0
faligndata %f18, %f20, %f42
faligndata %f20, %f22, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f22, %f24, %f46
stda %f32, [%o1] ASI_STORE
faligndata %f24, %f26, %f32
cmp %o0, %o5
faligndata %f26, %f28, %f34
dec BLOCK_SIZE, %o2
faligndata %f28, %f30, %f36
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f0
membar #Sync
2:
faligndata %f30, %f48, %f38
inc BLOCK_SIZE, %o1
faligndata %f48, %f50, %f40
inc BLOCK_SIZE, %o0
faligndata %f50, %f52, %f42
faligndata %f52, %f54, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f54, %f56, %f46
stda %f32, [%o1] ASI_STORE
faligndata %f56, %f58, %f32
cmp %o0, %o5
faligndata %f58, %f60, %f34
dec BLOCK_SIZE, %o2
faligndata %f60, %f62, %f36
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f16
membar #Sync
2:
faligndata %f62, %f0, %f38
inc BLOCK_SIZE, %o1
faligndata %f0, %f2, %f40
inc BLOCK_SIZE, %o0
faligndata %f2, %f4, %f42
faligndata %f4, %f6, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f6, %f8, %f46
stda %f32, [%o1] ASI_STORE
ba 3b
inc BLOCK_SIZE, %o1
!!
!! Source at BLOCK_ALIGN+48
!!
!! We need to load 2 doubles by hand.
!!
L106:
#ifdef RETURN_NAME
sethi %hi(1f), %g1
ba,pt %icc, 2f
or %g1, %lo(1f), %g1
1:
.asciz "L106"
.align 8
2:
#endif
fmovd %f0, %f10
ldd [%o0], %f12
inc 8, %o0
ldd [%o0], %f14
inc 8, %o0
cmp %o0, %o5
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f16
membar #Sync
2:
inc BLOCK_SIZE, %o0
3:
faligndata %f10, %f12, %f32
cmp %o0, %o5
faligndata %f12, %f14, %f34
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f48
membar #Sync
2:
faligndata %f14, %f16, %f36
dec BLOCK_SIZE, %o2
faligndata %f16, %f18, %f38
inc BLOCK_SIZE, %o0
faligndata %f18, %f20, %f40
faligndata %f20, %f22, %f42
faligndata %f22, %f24, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f24, %f26, %f46
stda %f32, [%o1] ASI_STORE
faligndata %f26, %f28, %f32
cmp %o0, %o5
faligndata %f28, %f30, %f34
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f0
membar #Sync
2:
faligndata %f30, %f48, %f36
dec BLOCK_SIZE, %o2
faligndata %f48, %f50, %f38
inc BLOCK_SIZE, %o1
faligndata %f50, %f52, %f40
faligndata %f52, %f54, %f42
inc BLOCK_SIZE, %o0
faligndata %f54, %f56, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f56, %f58, %f46
stda %f32, [%o1] ASI_STORE
faligndata %f58, %f60, %f32
cmp %o0, %o5
faligndata %f60, %f62, %f34
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f16
membar #Sync
2:
faligndata %f62, %f0, %f36
dec BLOCK_SIZE, %o2
faligndata %f0, %f2, %f38
inc BLOCK_SIZE, %o1
faligndata %f2, %f4, %f40
faligndata %f4, %f6, %f42
inc BLOCK_SIZE, %o0
faligndata %f6, %f8, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f8, %f10, %f46
stda %f32, [%o1] ASI_STORE
ba 3b
inc BLOCK_SIZE, %o1
!!
!! Source at BLOCK_ALIGN+56
!!
!! We need to load 1 double by hand.
!!
L107:
#ifdef RETURN_NAME
sethi %hi(1f), %g1
ba,pt %icc, 2f
or %g1, %lo(1f), %g1
1:
.asciz "L107"
.align 8
2:
#endif
fmovd %f0, %f12
ldd [%o0], %f14
inc 8, %o0
cmp %o0, %o5
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f16
membar #Sync
2:
inc BLOCK_SIZE, %o0
3:
faligndata %f12, %f14, %f32
cmp %o0, %o5
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f48
membar #Sync
2:
faligndata %f14, %f16, %f34
dec BLOCK_SIZE, %o2
faligndata %f16, %f18, %f36
inc BLOCK_SIZE, %o0
faligndata %f18, %f20, %f38
faligndata %f20, %f22, %f40
faligndata %f22, %f24, %f42
faligndata %f24, %f26, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f26, %f28, %f46
stda %f32, [%o1] ASI_STORE
faligndata %f28, %f30, %f32
cmp %o0, %o5
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f0
membar #Sync
2:
faligndata %f30, %f48, %f34
dec BLOCK_SIZE, %o2
faligndata %f48, %f50, %f36
inc BLOCK_SIZE, %o1
faligndata %f50, %f52, %f38
faligndata %f52, %f54, %f40
inc BLOCK_SIZE, %o0
faligndata %f54, %f56, %f42
faligndata %f56, %f58, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f58, %f60, %f46
stda %f32, [%o1] ASI_STORE
faligndata %f60, %f62, %f32
cmp %o0, %o5
bleu,a,pn %icc, 2f
ldda [%o0] ASI_BLK_P, %f16
membar #Sync
2:
faligndata %f62, %f0, %f34
dec BLOCK_SIZE, %o2
faligndata %f0, %f2, %f36
inc BLOCK_SIZE, %o1
faligndata %f2, %f4, %f38
faligndata %f4, %f6, %f40
inc BLOCK_SIZE, %o0
faligndata %f6, %f8, %f42
faligndata %f8, %f10, %f44
brlez,pn %o2, Lbcopy_blockdone
faligndata %f10, %f12, %f46
stda %f32, [%o1] ASI_STORE
ba 3b
inc BLOCK_SIZE, %o1
Lbcopy_blockdone:
inc BLOCK_SIZE, %o2 ! Fixup our overcommit
membar #Sync ! Finish any pending loads
#define FINISH_REG(f) \
deccc 8, %o2; \
bl,a Lbcopy_blockfinish; \
fmovd f, %f48; \
std f, [%o1]; \
inc 8, %o1
FINISH_REG(%f32)
FINISH_REG(%f34)
FINISH_REG(%f36)
FINISH_REG(%f38)
FINISH_REG(%f40)
FINISH_REG(%f42)
FINISH_REG(%f44)
FINISH_REG(%f46)
FINISH_REG(%f48)
#undef FINISH_REG
!!
!! The low 3 bits have the sub-word bits needed to be
!! stored [because (x-8)&0x7 == x].
!!
Lbcopy_blockfinish:
brz,pn %o2, 2f ! 100% complete?
fmovd %f48, %f4
cmp %o2, 8 ! Exactly 8 bytes?
bz,a,pn %xcc, 2f
std %f4, [%o1]
btst 4, %o2 ! Word store?
bz %xcc, 1f
nop
st %f4, [%o1]
inc 4, %o1
1:
btst 2, %o2
fzero %f0
bz 1f
mov -6, %o4
alignaddr %o1, %o4, %g0
faligndata %f0, %f4, %f8
stda %f8, [%o1] ASI_FL16_P ! Store short
inc 2, %o1
1:
btst 1, %o2 ! Byte aligned?
bz 2f
mov -7, %o0 ! Calculate dest - 7
alignaddr %o1, %o0, %g0 ! Calculate shift mask and dest.
faligndata %f0, %f4, %f8 ! Move 1st byte to low part of f8
stda %f8, [%o1] ASI_FL8_P ! Store 1st byte
inc 1, %o1 ! Update address
2:
membar #Sync
#if 0
!!
!! verify copy success.
!!
mov %i0, %o2
mov %i1, %o4
mov %i2, %l4
0:
ldub [%o2], %o1
inc %o2
ldub [%o4], %o3
inc %o4
cmp %o3, %o1
bnz 1f
dec %l4
brnz %l4, 0b
nop
ba 2f
nop
1:
set block_disable, %o0
stx %o0, [%o0]
set 0f, %o0
call prom_printf
sub %i2, %l4, %o5
set 1f, %o0
mov %i0, %o1
mov %i1, %o2
call prom_printf
mov %i2, %o3
ta 1
.data
_ALIGN
block_disable: .xword 0
0: .asciz "bcopy failed: %x@%p != %x@%p byte %d\r\n"
1: .asciz "bcopy(%p, %p, %lx)\r\n"
_ALIGN
.text
2:
#endif
#ifdef _KERNEL
set 1f, %o0
mov %i0, %o1
mov %i1, %o2
call printf
mov %i2, %o3
.data
_ALIGN
1: .asciz "block exit (%p, %p, %d)\n"
_ALIGN
.text
/*
* Weve saved our possible fpstate, now disable the fpu
* and continue with life.
*/
#if 1
RESTORE_FPU
#else
#ifdef DEBUG
LDPTR [%l1 + %lo(FPPROC)], %l7
cmp %l7, %l5
! tnz 1 ! fpproc has changed!
LDPTR [%l5 + P_FPSTATE], %l7
cmp %l7, %l0
tnz 1 ! fpstate has changed!
#endif
andcc %l2, %l3, %g0 ! If (fpproc && fpstate)
STPTR %l2, [%l1 + %lo(FPPROC)] ! Restore old fproc
bz,pt %xcc, 1f ! Skip if no fpstate
STPTR %l6, [%l5 + P_FPSTATE] ! Restore old fpstate
call _C_LABEL(loadfpstate) ! Re-load orig fpstate
mov %l3, %o0
1:
#endif
set 1f, %o0
mov %i0, %o1
mov %i1, %o2
call printf
mov %i2, %o3
.data
_ALIGN
1: .asciz "block done (%p, %p, %d)\n"
_ALIGN
.text
ret
restore %g1, 0, %o0 ! Return DEST for memcpy
#endif
retl
mov %g1, %o0
#endif
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