[0e5b446] | 1 | /* |
---|
| 2 | * Context switch for the Reneas M32C |
---|
| 3 | * |
---|
| 4 | * COPYRIGHT (c) 1989-2008. |
---|
| 5 | * On-Line Applications Research Corporation (OAR). |
---|
| 6 | * |
---|
| 7 | * The license and distribution terms for this file may be |
---|
| 8 | * found in the file LICENSE in this distribution or at |
---|
| 9 | * http://www.rtems.com/license/LICENSE. |
---|
| 10 | * |
---|
| 11 | * $Id$ |
---|
| 12 | */ |
---|
| 13 | |
---|
[4990792] | 14 | #ifdef HAVE_CONFIG_H |
---|
| 15 | #include "config.h" |
---|
| 16 | #endif |
---|
| 17 | |
---|
[0e5b446] | 18 | #define ARG_EXECUTING 8 |
---|
| 19 | #define ARG_HEIR 12 |
---|
| 20 | |
---|
| 21 | #define CONTEXT_R8 0x00 |
---|
| 22 | #define CONTEXT_R9 0x04 |
---|
| 23 | #define CONTEXT_R10 0x08 |
---|
| 24 | #define CONTEXT_R11 0x0C |
---|
| 25 | #define CONTEXT_R12 0x10 |
---|
| 26 | #define CONTEXT_R13_FP 0x14 |
---|
| 27 | #define CONTEXT_R14_LR 0x18 |
---|
| 28 | #define CONTEXT_R15_SP 0x1C |
---|
| 29 | #define CONTEXT_ACC_LOW 0x20 |
---|
| 30 | #define CONTEXT_ACC_HIGH 0x24 |
---|
| 31 | |
---|
| 32 | .file "context_switch.S" |
---|
| 33 | .text |
---|
| 34 | .global _CPU_Context_switch |
---|
| 35 | .type _CPU_Context_switch, @function |
---|
| 36 | _CPU_Context_switch: |
---|
| 37 | st r8, @(CONTEXT_R8,r0) |
---|
| 38 | st r9, @(CONTEXT_R9,r0) |
---|
| 39 | st r10, @(CONTEXT_R10,r0) |
---|
| 40 | st r11, @(CONTEXT_R11,r0) |
---|
| 41 | st r12, @(CONTEXT_R12,r0) |
---|
| 42 | st r13, @(CONTEXT_R13_FP,r0) |
---|
| 43 | st r14, @(CONTEXT_R14_LR,r0) |
---|
| 44 | st r15, @(CONTEXT_R15_SP,r0) |
---|
| 45 | mvfaclo r2 |
---|
| 46 | st r2, @(CONTEXT_ACC_LOW,r0) |
---|
| 47 | mvfachi r2 |
---|
| 48 | st r2, @(CONTEXT_ACC_HIGH,r0) |
---|
| 49 | |
---|
| 50 | restore: |
---|
| 51 | ld r8, @(CONTEXT_R8,r1) |
---|
| 52 | ld r9, @(CONTEXT_R9,r1) |
---|
| 53 | ld r10, @(CONTEXT_R10,r1) |
---|
| 54 | ld r11, @(CONTEXT_R11,r1) |
---|
| 55 | ld r12, @(CONTEXT_R12,r1) |
---|
| 56 | ld r13, @(CONTEXT_R13_FP,r1) |
---|
| 57 | ld r14, @(CONTEXT_R14_LR,r1) |
---|
| 58 | ld r15, @(CONTEXT_R15_SP,r1) |
---|
| 59 | ld r2, @(CONTEXT_ACC_LOW,r1) |
---|
| 60 | mvtaclo r2 |
---|
| 61 | ld r2, @(CONTEXT_ACC_HIGH,r1) |
---|
| 62 | mvtachi r2 |
---|
| 63 | jmp lr |
---|
| 64 | |
---|
| 65 | .global _CPU_Context_Restart_self |
---|
| 66 | .type _CPU_Context_Restart_self, @function |
---|
| 67 | _CPU_Context_Restart_self: |
---|
| 68 | mv r0, r1 |
---|
| 69 | bra restore |
---|