diff options
Diffstat (limited to 'c/src/lib/libbsp/m68k/mvme167/timer/timerisr.S')
| -rw-r--r-- | c/src/lib/libbsp/m68k/mvme167/timer/timerisr.S | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/c/src/lib/libbsp/m68k/mvme167/timer/timerisr.S b/c/src/lib/libbsp/m68k/mvme167/timer/timerisr.S deleted file mode 100644 index d96f0996a5..0000000000 --- a/c/src/lib/libbsp/m68k/mvme167/timer/timerisr.S +++ /dev/null @@ -1,50 +0,0 @@ -/** - * @file - * - * This ISR is used to bump a count of interval "overflow" interrupts which - * have occurred since the timer was started. The number of overflows is taken - * into account in the benchmark_timer_read() routine. - */ - -/* - * COPYRIGHT (c) 1989-2014. - * On-Line Applications Research Corporation (OAR). - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - * - * Modifications of respective RTEMS file: COPYRIGHT (c) 1994. - * Copyright (c) 1998, National Research Council of Canada - */ - -#include <rtems/asm.h> - -BEGIN_CODE - -.set INTR_CLEAR_REG, 0xfff40074 | interrupt clear register -.set T1_CNTRL_REG, 0xfff40060 | tick timer 1 control register -.set CLEAR_INT, 0x01000000 | clear tick 1 interrupt -.set CLEAR_OVF, 0x00000004 | clear tick 1 overflow counter - - PUBLIC (Ttimer_val) - PUBLIC (timerisr) -SYM (timerisr): - move.l a0, -(a7) | save a0 - move.l d0, -(a7) | save d0 - move.w sr, -(a7) | save ccr - movea.l #INTR_CLEAR_REG, a0 | a0 = addr of intr clr reg - ori.l #CLEAR_INT, (a0) | clear tick timer 1 intr - movea.l #T1_CNTRL_REG, a0 | a0 = addr of t1 cntrl reg - move.l (a0), d0 | read overflow counter - lsr.l #4, d0 | put overflow in low order bits - andi.l #0xF, d0 | keep only overflow - add.l d0, SYM (Ttimer_val) | increment timer value - ori.l #CLEAR_OVF, (a0) | clear overflow counter - move.w (a7)+, sr | restore ccr - move.l (a7)+, d0 | restore d0 - move.l (a7)+, a0 | restore a0 - rte - -END_CODE -END |