* base on code by
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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 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 General Public License for more details.
- *
- * You should have received a copy of the GNU 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
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <ppc_asm.tmpl>
*/
.globl wait_ticks
wait_ticks:
- mflr r8 /* save link register */
- mr r7, r3 /* save tick count */
+ stwu r1, -16(r1)
+ mflr r0 /* save link register */
+ stw r0, 20(r1) /* Use r0 or GDB will be unhappy */
+ stw r14, 12(r1) /* save used registers */
+ stw r15, 8(r1)
+ mr r14, r3 /* save tick count */
bl get_ticks /* Get start time */
/* Calculate end time */
- addc r7, r4, r7 /* Compute end time lower */
- addze r6, r3 /* and end time upper */
+ addc r14, r4, r14 /* Compute end time lower */
+ addze r15, r3 /* and end time upper */
WATCHDOG_RESET /* Trigger watchdog, if needed */
1: bl get_ticks /* Get current time */
- subfc r4, r4, r7 /* Subtract current time from end time */
- subfe. r3, r3, r6
+ subfc r4, r4, r14 /* Subtract current time from end time */
+ subfe. r3, r3, r15
bge 1b /* Loop until time expired */
- mtlr r8 /* restore link register */
+ lwz r15, 8(r1) /* restore saved registers */
+ lwz r14, 12(r1)
+ lwz r0, 20(r1)
+ addi r1,r1,16
+ mtlr r0
blr