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/*
* Context switch for the Reneas M32C
*
* COPYRIGHT (c) 1989-2008.
* 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.com/license/LICENSE.
*
* $Id$
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define ARG_EXECUTING 8
#define ARG_HEIR 12
#define CONTEXT_R8 0x00
#define CONTEXT_R9 0x04
#define CONTEXT_R10 0x08
#define CONTEXT_R11 0x0C
#define CONTEXT_R12 0x10
#define CONTEXT_R13_FP 0x14
#define CONTEXT_R14_LR 0x18
#define CONTEXT_R15_SP 0x1C
#define CONTEXT_ACC_LOW 0x20
#define CONTEXT_ACC_HIGH 0x24
.file "context_switch.S"
.text
.global _CPU_Context_switch
.type _CPU_Context_switch, @function
_CPU_Context_switch:
st r8, @(CONTEXT_R8,r0)
st r9, @(CONTEXT_R9,r0)
st r10, @(CONTEXT_R10,r0)
st r11, @(CONTEXT_R11,r0)
st r12, @(CONTEXT_R12,r0)
st r13, @(CONTEXT_R13_FP,r0)
st r14, @(CONTEXT_R14_LR,r0)
st r15, @(CONTEXT_R15_SP,r0)
mvfaclo r2
st r2, @(CONTEXT_ACC_LOW,r0)
mvfachi r2
st r2, @(CONTEXT_ACC_HIGH,r0)
restore:
ld r8, @(CONTEXT_R8,r1)
ld r9, @(CONTEXT_R9,r1)
ld r10, @(CONTEXT_R10,r1)
ld r11, @(CONTEXT_R11,r1)
ld r12, @(CONTEXT_R12,r1)
ld r13, @(CONTEXT_R13_FP,r1)
ld r14, @(CONTEXT_R14_LR,r1)
ld r15, @(CONTEXT_R15_SP,r1)
ld r2, @(CONTEXT_ACC_LOW,r1)
mvtaclo r2
ld r2, @(CONTEXT_ACC_HIGH,r1)
mvtachi r2
jmp lr
.global _CPU_Context_Restart_self
.type _CPU_Context_Restart_self, @function
_CPU_Context_Restart_self:
mv r1, r0
bra restore
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