0.3.6/doc/hello_mips.c

/*
 *  $Id: hello_mips.c,v 1.3 2005/08/09 18:29:20 debug Exp $
 *
 *  MIPS Hello World for GXemul.
 *
 *  Compile:
 *      mips64-unknown-elf-gcc -O2 hello_mips.c -mips4 -mabi=64 -c
 *
 *  and link:
 *      mips64-unknown-elf-ld -Ttext 0xa800000000030000 -e f
 *              hello_mips.o -o hello_mips --oformat=elf64-bigmips
 *
 *  Run:
 *      gxemul -E testmips hello_mips
 */

/*  Note: The cast to a signed int causes the address to be sign-extended
    correctly to 0xffffffffb00000xx when compiled in 64-bit mode  */
#define PUTCHAR_ADDRESS         ((signed int)0xb0000000)
#define HALT_ADDRESS            ((signed int)0xb0000010)

void printchar(char ch)
{
        *((volatile unsigned char *) PUTCHAR_ADDRESS) = ch;
}

void halt(void)
{
        *((volatile unsigned char *) HALT_ADDRESS) = 0;
}

void printstr(char *s)
{
        while (*s)
                printchar(*s++);
}

void f(void)
{
        printstr("Hello world\n");
        halt();
}

1	/*
2	* $Id: hello_mips.c,v 1.3 2005/08/09 18:29:20 debug Exp $
3	*
4	* MIPS Hello World for GXemul.
5	*
6	* Compile:
7	* mips64-unknown-elf-gcc -O2 hello_mips.c -mips4 -mabi=64 -c
8	*
9	* and link:
10	* mips64-unknown-elf-ld -Ttext 0xa800000000030000 -e f
11	* hello_mips.o -o hello_mips --oformat=elf64-bigmips
12	*
13	* Run:
14	* gxemul -E testmips hello_mips
15	*/
16
17	/* Note: The cast to a signed int causes the address to be sign-extended
18	correctly to 0xffffffffb00000xx when compiled in 64-bit mode */
19	#define PUTCHAR_ADDRESS ((signed int)0xb0000000)
20	#define HALT_ADDRESS ((signed int)0xb0000010)
21
22	void printchar(char ch)
23	{
24	((volatile unsigned char ) PUTCHAR_ADDRESS) = ch;
25	}
26
27	void halt(void)
28	{
29	((volatile unsigned char ) HALT_ADDRESS) = 0;
30	}
31
32	void printstr(char *s)
33	{
34	while (*s)
35	printchar(*s++);
36	}
37
38	void f(void)
39	{
40	printstr("Hello world\n");
41	halt();
42	}
43