| /* |
| * Copyright (c) 2008 Travis Geiselbrecht |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files |
| * (the "Software"), to deal in the Software without restriction, |
| * including without limitation the rights to use, copy, modify, merge, |
| * publish, distribute, sublicense, and/or sell copies of the Software, |
| * and to permit persons to whom the Software is furnished to do so, |
| * subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| #ifndef __ARCH_ARM_H |
| #define __ARCH_ARM_H |
| |
| #include <sys/types.h> |
| #include <arch/arm/cores.h> |
| |
| #if defined(__cplusplus) |
| extern "C" { |
| #endif |
| |
| void arm_context_switch(vaddr_t *old_sp, vaddr_t new_sp); |
| |
| static inline uint32_t read_cpsr() { |
| uint32_t cpsr; |
| |
| __asm__ volatile("mrs %0, cpsr" : "=r" (cpsr)); |
| return cpsr; |
| } |
| |
| struct arm_iframe { |
| uint32_t spsr; |
| uint32_t r0; |
| uint32_t r1; |
| uint32_t r2; |
| uint32_t r3; |
| uint32_t r12; |
| uint32_t lr; |
| uint32_t pc; |
| }; |
| |
| struct arm_fault_frame { |
| uint32_t spsr; |
| uint32_t usp; |
| uint32_t ulr; |
| uint32_t r[13]; |
| uint32_t pc; |
| }; |
| |
| #define MODE_MASK 0x1f |
| #define MODE_USR 0x10 |
| #define MODE_FIQ 0x11 |
| #define MODE_IRQ 0x12 |
| #define MODE_SVC 0x13 |
| #define MODE_MON 0x16 |
| #define MODE_ABT 0x17 |
| #define MODE_UND 0x1b |
| #define MODE_SYS 0x1f |
| |
| struct arm_mode_regs { |
| uint32_t fiq_r13, fiq_r14; |
| uint32_t irq_r13, irq_r14; |
| uint32_t svc_r13, svc_r14; |
| uint32_t abt_r13, abt_r14; |
| uint32_t und_r13, und_r14; |
| uint32_t sys_r13, sys_r14; |
| }; |
| |
| void arm_save_mode_regs(struct arm_mode_regs *regs); |
| |
| uint32_t arm_read_cr1(void); |
| void arm_write_cr1(uint32_t val); |
| uint32_t arm_read_cr1_aux(void); |
| void arm_write_cr1_aux(uint32_t val); |
| void arm_write_ttbr(uint32_t val); |
| void arm_write_dacr(uint32_t val); |
| void arm_invalidate_tlb(void); |
| |
| #if defined(__cplusplus) |
| } |
| #endif |
| |
| #endif |