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| author | Hesham ALMatary <heshamelmatary@gmail.com> | 2014-08-31 18:29:41 -0500 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@oarcorp.com> | 2014-09-02 09:29:08 -0500 |
| commit | 305357eda5cc68436140a86379443ae4873f32e1 (patch) | |
| tree | 7a23ace6a17c0bbd6337d5157ba6775f3bc36673 /cpukit/score/cpu/or1k/or1k-context-volatile-clobber.S | |
| parent | Add missing r31 load instruction _ISR_Handler (diff) | |
| download | rtems-305357eda5cc68436140a86379443ae4873f32e1.tar.bz2 | |
or1k: Implement context validate and context volatile clobber functions.
score/cpu/or1k: Add two new assembly functions: _CPU_Context_validate
and _CPU_Context_volatile_clobber; their implementation follows
corresponding ARM functions.
Diffstat (limited to 'cpukit/score/cpu/or1k/or1k-context-volatile-clobber.S')
| -rw-r--r-- | cpukit/score/cpu/or1k/or1k-context-volatile-clobber.S | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/cpukit/score/cpu/or1k/or1k-context-volatile-clobber.S b/cpukit/score/cpu/or1k/or1k-context-volatile-clobber.S new file mode 100644 index 0000000000..304b769649 --- /dev/null +++ b/cpukit/score/cpu/or1k/or1k-context-volatile-clobber.S @@ -0,0 +1,35 @@ +/* + * COPYRIGHT (c) 2014 Hesham ALMatary <heshamelmatary@gmail.com> + * + * 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. + */ + +#ifdef HAVE_CONFIG_H + #include "config.h" +#endif + +#include <rtems/asm.h> + +.section .text + +PUBLIC(_CPU_Context_volatile_clobber) +SYM(_CPU_Context_volatile_clobber): + +.macro clobber_register reg + l.addi r0, r0, -1 + l.addi \reg, r0, 0 +.endm + + clobber_register r3 + clobber_register r4 + clobber_register r5 + clobber_register r6 + clobber_register r7 + clobber_register r8 + clobber_register r13 + clobber_register r31 + + l.jr r9 + l.nop |