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