126 lines
3.2 KiB
C
126 lines
3.2 KiB
C
#ifndef _TOS_CPU_H_
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#define _TOS_CPU_H_
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typedef struct cpu_context_st {
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union { cpu_data_t s0, x8, fp; };
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union { cpu_data_t s1, x9; };
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union { cpu_data_t s2, x18; };
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union { cpu_data_t s3, x19; };
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union { cpu_data_t s4, x20; };
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union { cpu_data_t s5, x21; };
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union { cpu_data_t s6, x22; };
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union { cpu_data_t s7, x23; };
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union { cpu_data_t s8, x24; };
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union { cpu_data_t s9, x25; };
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union { cpu_data_t s10,x26; };
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union { cpu_data_t s11,x27; };
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// caller save
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union { cpu_data_t ra, x1; };
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union { cpu_data_t gp, x3; };
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union { cpu_data_t tp, x4; };
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union { cpu_data_t t0, x5; };
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union { cpu_data_t t1, x6; };
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union { cpu_data_t t2, x7; };
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union { cpu_data_t t3, x28; };
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union { cpu_data_t t4, x29; };
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union { cpu_data_t t5, x30; };
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union { cpu_data_t t6, x31; };
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union { cpu_data_t a0, x10; };
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union { cpu_data_t a1, x11; };
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union { cpu_data_t a2, x12; };
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union { cpu_data_t a3, x13; };
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union { cpu_data_t a4, x14; };
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union { cpu_data_t a5, x15; };
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union { cpu_data_t a6, x16; };
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union { cpu_data_t a7, x17; };
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cpu_data_t epc;
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cpu_data_t mstatus;
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} cpu_context_t;
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__API__ uint32_t tos_cpu_clz(uint32_t val);
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__API__ void tos_cpu_int_disable(void);
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__API__ void tos_cpu_int_enable(void);
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__API__ cpu_cpsr_t tos_cpu_cpsr_save(void);
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__API__ void tos_cpu_cpsr_restore(cpu_cpsr_t cpsr);
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__KERNEL__ void cpu_init(void);
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__KERNEL__ void cpu_reset(void);
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__KERNEL__ void cpu_systick_init(k_cycle_t cycle_per_tick);
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__KERNEL__ void cpu_sched_start(void);
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__KERNEL__ void cpu_context_switch(void);
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__KERNEL__ void cpu_irq_context_switch(void);
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__KERNEL__ k_stack_t *cpu_task_stk_init(void *entry,
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void *arg,
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void *exit,
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k_stack_t *stk_base,
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size_t stk_size);
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#if TOS_CFG_TICKLESS_EN > 0u
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__KERNEL__ void cpu_systick_resume(void);
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__KERNEL__ void cpu_systick_suspend(void);
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__KERNEL__ void cpu_systick_reload_reset(void);
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__KERNEL__ void cpu_systick_pending_reset(void);
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__KERNEL__ k_time_t cpu_systick_max_delay_millisecond(void);
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__KERNEL__ void cpu_systick_expires_set(k_time_t millisecond);
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__KERNEL__ void cpu_systick_reset(void);
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#endif
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#if TOS_CFG_PWR_MGR_EN > 0u
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__KERNEL__ void cpu_sleep_mode_enter(void);
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__KERNEL__ void cpu_stop_mode_enter(void);
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__KERNEL__ void cpu_standby_mode_enter(void);
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#endif
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#if TOS_CFG_FAULT_BACKTRACE_EN > 0u
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#error "unsupport now"
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#endif
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/* Allocates CPU status register word. */
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#define TOS_CPU_CPSR_ALLOC() cpu_cpsr_t cpu_cpsr = (cpu_cpsr_t)0u
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/* Save CPU status word & disable interrupts.*/
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#define TOS_CPU_INT_DISABLE() \
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do { \
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cpu_cpsr = tos_cpu_cpsr_save(); \
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} while (0)
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/* Restore CPU status word. */
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#define TOS_CPU_INT_ENABLE() \
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do { \
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tos_cpu_cpsr_restore(cpu_cpsr); \
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} while (0)
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#endif /* _TOS_CPU_H_ */
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