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a47a12becf
As discussed on the list, move "arch/ppc" to "arch/powerpc" to better match the Linux directory structure. Please note that this patch also changes the "ppc" target in MAKEALL to "powerpc" to match this new infrastructure. But "ppc" is kept as an alias for now, to not break compatibility with scripts using this name. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Wolfgang Denk <wd@denx.de> Acked-by: Detlev Zundel <dzu@denx.de> Acked-by: Kim Phillips <kim.phillips@freescale.com> Cc: Peter Tyser <ptyser@xes-inc.com> Cc: Anatolij Gustschin <agust@denx.de>
66 lines
1.7 KiB
ArmAsm
66 lines
1.7 KiB
ArmAsm
/*
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* (C) Copyright 2000, 2001
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* Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
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* base on code by
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <ppc_asm.tmpl>
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#include <ppc_defs.h>
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#include <config.h>
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#include <watchdog.h>
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/*
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* unsigned long long get_ticks(void);
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*
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* read timebase as "long long"
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*/
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.globl get_ticks
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get_ticks:
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1: mftbu r3
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mftb r4
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mftbu r5
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cmp 0,r3,r5
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bne 1b
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blr
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/*
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* Delay for a number of ticks
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*/
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.globl wait_ticks
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wait_ticks:
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mflr r8 /* save link register */
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mr r7, r3 /* save tick count */
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bl get_ticks /* Get start time */
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/* Calculate end time */
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addc r7, r4, r7 /* Compute end time lower */
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addze r6, r3 /* and end time upper */
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WATCHDOG_RESET /* Trigger watchdog, if needed */
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1: bl get_ticks /* Get current time */
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subfc r4, r4, r7 /* Subtract current time from end time */
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subfe. r3, r3, r6
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bge 1b /* Loop until time expired */
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mtlr r8 /* restore link register */
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blr
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