75 lines
1.7 KiB
C
Executable File
75 lines
1.7 KiB
C
Executable File
/*
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* @Author: zhangzheng 1358745329@qq.com
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* @Date: 2023-08-14 09:47:54
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* @LastEditors: zhangzheng 1358745329@qq.com
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* @LastEditTime: 2023-08-14 13:10:35
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* @FilePath: /mkrtos-real/mkrtos_knl/knl/log.c
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* @Description: 内核的信息输出对象，用户态使用该对象进行数据输出。
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*/
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#include "log.h"
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#include "factory.h"
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#include "kobject.h"
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#include "globals.h"
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#include "init.h"
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#include "printk.h"
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#include "types.h"
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#include "util.h"
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static log_t log;
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enum log_op
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{
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WRITE_DATA,
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READ_DATA,
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SET_FLAGS
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};
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static void log_syscall(kobject_t *kobj, syscall_prot_t sys_p, msg_tag_t in_tag, entry_frame_t *f);
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static void log_reg(void)
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{
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kobject_init(&log.kobj);
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log.kobj.invoke_func = log_syscall;
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global_reg_kobj(&log.kobj, LOG_PROT);
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}
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INIT_KOBJ(log_reg);
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static msg_tag_t log_write_data(log_t *log, const char *data, int len)
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{
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for (int i = 0; i < len && data[i]; i++)
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{
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putc(data[i]);
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}
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return msg_tag_init(0);
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}
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static void
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log_syscall(kobject_t *kobj, syscall_prot_t sys_p, msg_tag_t in_tag, entry_frame_t *f)
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{
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msg_tag_t tag = msg_tag_init4(0, 0, 0, -EINVAL);
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if (sys_p.prot != LOG_PROT)
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{
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f->r[0] = msg_tag_init4(0, 0, 0, -EPROTO).raw;
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return;
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}
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switch (sys_p.op)
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{
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case WRITE_DATA:
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tag = log_write_data(
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(log_t *)kobj, (const char *)(&f->r[1]),
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MIN(in_tag.msg_buf_len * WORD_BYTES, WORD_BYTES * 5));
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break;
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case READ_DATA:
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printk("don't support read data.\n");
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break;
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case SET_FLAGS:
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printk("don't support set flags.\n");
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break;
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default:
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tag = msg_tag_init4(0, 0, 0, -ENOSYS);
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break;
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}
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f->r[0] = tag.raw;
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return;
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}
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void log_dump(void)
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{
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} |