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* kern/sparc64/cache.S: Fix grub_arch_sync_caches implementation.

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davem 2009-04-07 23:49:27 +00:00
parent c2cdde70b3
commit ea3f72cf0e
2 changed files with 13 additions and 14 deletions
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1
ChangeLog
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@ -3,6 +3,7 @@
* kern/sparc64/dl.c (grub_arch_dl_relocate_symbols): Add
support for R_SPARC_OLO10 relocations. Fix compile warning for
R_SPARC_WDISP30 case.
* kern/sparc64/cache.S: Fix grub_arch_sync_caches implementation.
2009-04-06 Pavel Roskin <proski@gnu.org>

26
kern/sparc64/cache.S
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@ -1,7 +1,7 @@
/* cache.S - Flush the processor cache for a specific region. */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2005,2007 Free Software Foundation, Inc.
* Copyright (C) 2005,2007,2009 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -27,17 +27,15 @@
* void grub_arch_sync_caches (void *address, grub_size_t len)
*/
FUNCTION(grub_arch_sync_caches)
save %o6, -0xC, %o6 ! Get a new register window,
! reserve space on stack for
! %i0, %i1, %i2
brz,pn %i0, return ! Return if address == 0.
nop
brz,pn %i1, return ! Return if len == 0.
clr %i2 ! index = 0.
loop: flush %i0 + %i2 ! Flush address + index.
cmp %i1, %i2 ! Compare len & index .
bpos,a,pt %xcc, loop ! If len > index, loop.
add %i2, 8, %i2 ! Go to next doubleword.
return: ret ! Restore caller's register
restore ! window and return.
brz,pn %o1, 2f
add %o0, %o1, %o1
add %o1, 7, %o1
andn %o1, 7, %o1
andn %o0, 7, %o0
sub %o1, %o0, %o1
1: subcc %o1, 8, %o1
bne,pt %icc, 1b
flush %o0 + %o1
2: retl
nop