Merge branch 'master' of git://git.denx.de/u-boot-arm

[karo-tx-uboot.git] / arch / powerpc / lib / ticks.S

diff --git a/arch/powerpc/lib/ticks.S b/arch/powerpc/lib/ticks.S
index 17810395b81be36d26843c69292b102d5ce78dac..0473a639eb9bc8b35486050fb66b5e00b521fc0d 100644 (file)
--- a/arch/powerpc/lib/ticks.S
+++ b/arch/powerpc/lib/ticks.S
@@ -4,23 +4,7 @@
  *  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>
@@ -50,19 +34,24 @@ wait_ticks:
        stwu    r1, -16(r1)
        mflr    r0              /* save link register */
        stw     r0, 20(r1)      /* Use r0 or GDB will be unhappy */
-       mr      r7, r3          /* save tick count */
+       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    r0              /* 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