103 lines
1.9 KiB
C
103 lines
1.9 KiB
C
#ifndef _KERNEL_PLATFORM_ARM64_TASKING_TRAPFRAME_H
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#define _KERNEL_PLATFORM_ARM64_TASKING_TRAPFRAME_H
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#include <libkern/c_attrs.h>
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#include <libkern/log.h>
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#include <libkern/types.h>
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typedef struct {
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uint64_t x[31];
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uint64_t esr;
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uint64_t elr;
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uint64_t far;
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uint64_t spsr;
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uint64_t sp;
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} PACKED trapframe_t;
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static inline uintptr_t get_stack_pointer(trapframe_t* tf)
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{
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return tf->sp;
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}
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static inline void set_stack_pointer(trapframe_t* tf, uintptr_t sp)
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{
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tf->sp = sp;
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}
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static inline uintptr_t get_frame_pointer(trapframe_t* tf)
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{
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return tf->x[29];
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}
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static inline void set_frame_pointer(trapframe_t* tf, uintptr_t bp)
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{
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tf->x[29] = bp;
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}
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static inline uintptr_t get_instruction_pointer(trapframe_t* tf)
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{
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return tf->elr;
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}
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static inline void set_instruction_pointer(trapframe_t* tf, uintptr_t ip)
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{
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tf->elr = ip;
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}
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static inline uintptr_t get_syscall_result(trapframe_t* tf)
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{
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return tf->x[0];
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}
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static inline void set_syscall_result(trapframe_t* tf, uintptr_t val)
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{
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tf->x[0] = val;
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}
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/**
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* STACK FUNCTIONS
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*/
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static inline void tf_push_to_stack(trapframe_t* tf, uintptr_t val)
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{
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tf->sp -= sizeof(uintptr_t);
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*((uintptr_t*)tf->sp) = val;
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}
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static inline uintptr_t tf_pop_to_stack(trapframe_t* tf)
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{
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uintptr_t val = *((uintptr_t*)tf->sp);
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tf->sp += sizeof(uintptr_t);
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return val;
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}
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static inline void tf_move_stack_pointer(trapframe_t* tf, int32_t val)
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{
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tf->sp += val;
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}
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static inline void tf_setup_as_user_thread(trapframe_t* tf)
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{
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tf->spsr = 0x0;
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}
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static inline void tf_setup_as_kernel_thread(trapframe_t* tf)
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{
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tf->spsr = 0x4;
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}
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static void dump_tf(trapframe_t* tf)
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{
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for (int i = 0; i < 31; i++) {
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log("x[%d]: %zx", i, tf->x[i]);
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}
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log("tf: %p", tf);
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log("sp: %zx", tf->sp);
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log("ip: %zx", tf->elr);
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log("fl: %zx", tf->spsr);
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log("far: %zx", tf->far);
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log("esr: %zx", tf->esr);
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}
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#endif // _KERNEL_PLATFORM_ARM64_TASKING_TRAPFRAME_H
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