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31 lines
721 B
31 lines
721 B
#ifndef _PROC_H_
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#define _PROC_H_
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#include "riscv.h"
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typedef struct trapframe_t {
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// space to store context (all common registers)
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/* offset:0 */ riscv_regs regs;
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// process's "user kernel" stack
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/* offset:248 */ uint64 kernel_sp;
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// pointer to smode_trap_handler
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/* offset:256 */ uint64 kernel_trap;
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// saved user process counter
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/* offset:264 */ uint64 epc;
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}trapframe;
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// the extremely simple definition of process, used for begining labs of PKE
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typedef struct process_t {
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// pointing to the stack used in trap handling.
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uint64 kstack;
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// trapframe storing the context of a (User mode) process.
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trapframe* trapframe;
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}process;
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void switch_to(process*);
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extern process* current;
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#endif
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