59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
/**
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* @file syscall.c
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* @author zhangzheng (1358745329@qq.com)
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* @brief
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* @version 0.1
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* @date 2023-11-19
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*
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* @copyright Copyright (c) 2023
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*
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*/
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#include "types.h"
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#include "syscall.h"
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#include "thread.h"
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#include "task.h"
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#include "obj_space.h"
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#include "err.h"
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#include "arch.h"
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#include "thread.h"
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void syscall_entry(entry_frame_t *entry)
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{
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msg_tag_t tag = msg_tag_init4(0, 0, 0, -1);
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thread_t *th = thread_get_current();
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task_t *tk = thread_get_current_task();
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syscall_prot_t sys_p = syscall_prot_create_raw(entry->regs[7]);
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kobject_t *kobj =
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obj_space_lookup_kobj(&tk->obj_space, sys_p.obj_inx);
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if (!kobj)
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{
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if (sys_p.self)
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{
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kobj = &th->kobj;
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}
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else
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{
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entry->regs[0] = msg_tag_init4(0, 0, 0, -ENOENT).raw;
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goto end;
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}
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}
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umword_t status = cpulock_get_status();
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sti(); //开启中断
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if (kobj->invoke_func)
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{
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kobj->invoke_func(kobj, sys_p, msg_tag_init(entry->regs[0]), entry);
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}
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cpulock_set(status);
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end:;
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#if !IS_ENABLED(CONFIG_MMU)
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addr_t u_sp = arch_get_user_sp();
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pf_s_t *pf_a = (pf_s_t *)u_sp;
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pf_a->rg0[0] = entry->regs[0];
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pf_a->rg0[1] = entry->regs[1];
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pf_a->rg0[2] = entry->regs[2];
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pf_a->rg0[3] = entry->regs[3];
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#endif
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}
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