| Travis Geiselbrecht | 1d0df69 | 2008-09-01 02:26:09 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2008 Travis Geiselbrecht |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining |
| 5 | * a copy of this software and associated documentation files |
| 6 | * (the "Software"), to deal in the Software without restriction, |
| 7 | * including without limitation the rights to use, copy, modify, merge, |
| 8 | * publish, distribute, sublicense, and/or sell copies of the Software, |
| 9 | * and to permit persons to whom the Software is furnished to do so, |
| 10 | * subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be |
| 13 | * included in all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 16 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 17 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 | * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 19 | * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 20 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 21 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 22 | */ |
| 23 | #ifndef __ARCH_ARM_H |
| 24 | #define __ARCH_ARM_H |
| 25 | |
| 26 | #include <sys/types.h> |
| 27 | #include <arch/arm/cores.h> |
| 28 | |
| 29 | #if defined(__cplusplus) |
| 30 | extern "C" { |
| 31 | #endif |
| 32 | |
| 33 | void arm_context_switch(vaddr_t *old_sp, vaddr_t new_sp); |
| 34 | |
| 35 | static inline uint32_t read_cpsr() { |
| 36 | uint32_t cpsr; |
| 37 | |
| 38 | __asm__ volatile("mrs %0, cpsr" : "=r" (cpsr)); |
| 39 | return cpsr; |
| 40 | } |
| 41 | |
| 42 | struct arm_iframe { |
| 43 | uint32_t spsr; |
| 44 | uint32_t r0; |
| 45 | uint32_t r1; |
| 46 | uint32_t r2; |
| 47 | uint32_t r3; |
| 48 | uint32_t r12; |
| 49 | uint32_t lr; |
| 50 | uint32_t pc; |
| 51 | }; |
| 52 | |
| 53 | struct arm_fault_frame { |
| 54 | uint32_t spsr; |
| 55 | uint32_t usp; |
| 56 | uint32_t ulr; |
| 57 | uint32_t r[13]; |
| 58 | uint32_t pc; |
| 59 | }; |
| 60 | |
| 61 | #define MODE_MASK 0x1f |
| 62 | #define MODE_USR 0x10 |
| 63 | #define MODE_FIQ 0x11 |
| 64 | #define MODE_IRQ 0x12 |
| 65 | #define MODE_SVC 0x13 |
| 66 | #define MODE_MON 0x16 |
| 67 | #define MODE_ABT 0x17 |
| 68 | #define MODE_UND 0x1b |
| 69 | #define MODE_SYS 0x1f |
| 70 | |
| 71 | struct arm_mode_regs { |
| 72 | uint32_t fiq_r13, fiq_r14; |
| 73 | uint32_t irq_r13, irq_r14; |
| 74 | uint32_t svc_r13, svc_r14; |
| 75 | uint32_t abt_r13, abt_r14; |
| 76 | uint32_t und_r13, und_r14; |
| 77 | uint32_t sys_r13, sys_r14; |
| 78 | }; |
| 79 | |
| 80 | void arm_save_mode_regs(struct arm_mode_regs *regs); |
| 81 | |
| 82 | uint32_t arm_read_cr1(void); |
| 83 | void arm_write_cr1(uint32_t val); |
| 84 | uint32_t arm_read_cr1_aux(void); |
| 85 | void arm_write_cr1_aux(uint32_t val); |
| 86 | void arm_write_ttbr(uint32_t val); |
| 87 | void arm_write_dacr(uint32_t val); |
| 88 | void arm_invalidate_tlb(void); |
| 89 | |
| 90 | #if defined(__cplusplus) |
| 91 | } |
| 92 | #endif |
| 93 | |
| 94 | #endif |