#include "cstdint"
#include "sbi/sbi_ecall_interface.h"

Include dependency graph for boot.cpp:

Classes
struct	sbiret_t

Functions
sbiret_t	ecall (unsigned long _arg0, unsigned long _arg1, unsigned long _arg2, unsigned long _arg3, unsigned long _arg4, unsigned long _arg5, int _fid, int _eid)

void	put_char (const char _c)

int	main (int, char **)
	入口 More...

Detailed Description

boot cpp

Author: Zone.N (Zone..nosp@m.Niuz.nosp@m.h@hot.nosp@m.mail.nosp@m..com)

Version: 1.0

Date: 2023-07-15

Copyright: MIT LICENSE https://github.com/Simple-XX/SimpleKernel

change log:

Date	Author	Description
2023-07-15	Zone.N (Zone..nosp@m.Niuz.nosp@m.h@hot.nosp@m.mail.nosp@m..com)	创建文件

Definition in file boot.cpp.

Function Documentation

◆ ecall()

sbiret_t ecall	(	unsigned long	_arg0,
		unsigned long	_arg1,
		unsigned long	_arg2,
		unsigned long	_arg3,
		unsigned long	_arg4,
		unsigned long	_arg5,
		int	_fid,
		int	_eid
	)

Definition at line 32 of file boot.cpp.

                                    {
   sbiret_t ret;
   register uintptr_t a0 asm("a0") = (uintptr_t)(_arg0);
   register uintptr_t a1 asm("a1") = (uintptr_t)(_arg1);
   register uintptr_t a2 asm("a2") = (uintptr_t)(_arg2);
   register uintptr_t a3 asm("a3") = (uintptr_t)(_arg3);
   register uintptr_t a4 asm("a4") = (uintptr_t)(_arg4);
   register uintptr_t a5 asm("a5") = (uintptr_t)(_arg5);
   register uintptr_t a6 asm("a6") = (uintptr_t)(_fid);
   register uintptr_t a7 asm("a7") = (uintptr_t)(_eid);
   asm("ecall"
       : "+r"(a0), "+r"(a1)
       : "r"(a2), "r"(a3), "r"(a4), "r"(a5), "r"(a6), "r"(a7)
       : "memory");
   ret.error = a0;
   ret.value = a1;
   return ret;
 }

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◆ main()

int main	(	int	_argc,
		char **	_argv
	)

入口

内核入口

Parameters

_argc	参数个数
_argv	参数列表

Returns: int 正常返回 0

Definition at line 58 of file boot.cpp.

                        {
   put_char('H');
   put_char('e');
   put_char('l');
   put_char('l');
   put_char('W');
   put_char('o');
   put_char('r');
   put_char('l');
   put_char('d');
   put_char('!');
  
   return 0;
 }

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◆ put_char()

void put_char ( const char _c )

Definition at line 53 of file boot.cpp.

                              {
   ecall(_c, 0, 0, 0, 0, 0, 0, SBI_EXT_0_1_CONSOLE_PUTCHAR);
   return;
 }