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Move shit to separate file

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This commit is contained in:
Braiden Vasco 2017-11-01 12:57:56 +00:00
parent 9e378de894
commit c354930e2f
4 changed files with 146 additions and 145 deletions
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2
arch/Makefile
View file

@ -7,7 +7,7 @@ CCPREFIX = i686-elf-
AS = $(CCPREFIX)as
CC = $(CCPREFIX)gcc
OBJS = boot.s.o main.c.o logger.c.o console.c.o gdt.c.o gdt.asm.o idt.c.o idt.asm.o isr.c.o isr.asm.o
OBJS = boot.s.o main.c.o logger.c.o console.c.o gdt.c.o gdt.asm.o idt.c.o idt.asm.o isr.c.o isr.asm.o multiboot2.c.o
run: kernel
qemu-system-i386 -kernel kernel -d guest_errors

145
arch/main.c
View file

@ -1,11 +1,10 @@
#include <kernelmq/multiboot.h>
#include "logger.h"
#include "multiboot2.h"
#include "gdt.h"
#include "idt.h"
static void print_multiboot2_info(unsigned long addr);
void main(unsigned int multiboot_magic, unsigned long multiboot_info)
{
logger_initialize();
@ -36,145 +35,3 @@ void main(unsigned int multiboot_magic, unsigned long multiboot_info)
logger_warn("Nothing to do.");
logger_fail("Halt.");
}
#include "console.h"
#include "multiboot2.h"
static void itoa(char *buf, int base, int d);
static void printf(const char *format, ...);
void print_multiboot2_info(unsigned long addr)
{
struct multiboot_tag *tag;
unsigned size;
if (addr & 7)
{
printf ("Unaligned mbi: 0x%x\n", addr);
return;
}
size = *(unsigned *) addr;
printf ("Announced mbi size 0x%x\n", size);
for (
tag = (struct multiboot_tag *) (addr + 8);
tag->type != MULTIBOOT_TAG_TYPE_END;
tag = (struct multiboot_tag *) ((multiboot_uint8_t *) tag + ((tag->size + 7) & ~7)))
{
switch (tag->type)
{
case MULTIBOOT_TAG_TYPE_MODULE:
printf(
"Module at 0x%x-0x%x. Command line %s\n",
((struct multiboot_tag_module *) tag)->mod_start,
((struct multiboot_tag_module *) tag)->mod_end,
((struct multiboot_tag_module *) tag)->cmdline
);
break;
}
}
tag = (struct multiboot_tag *) ((multiboot_uint8_t *) tag + ((tag->size + 7) & ~7));
printf ("Total mbi size 0x%x\n", (unsigned) tag - addr);
}
void itoa(char *buf, int base, int d)
{
char *p = buf;
char *p1, *p2;
unsigned long ud = d;
int divisor = 10;
/*
* If %d is specified and D is minus, put '-' in the head.
* */
if (base == 'd' && d < 0)
{
*p++ = '-';
buf++;
ud = -d;
}
else if (base == 'x')
divisor = 16;
/*
* Divide UD by DIVISOR until UD == 0.
* */
do
{
int remainder = ud % divisor;
*p++ = (remainder < 10) ? remainder + '0' : remainder + 'a' - 10;
}
while (ud /= divisor);
/*
* Terminate BUF.
* */
*p = 0;
/*
* Reverse BUF.
* */
p1 = buf;
p2 = p - 1;
while (p1 < p2)
{
char tmp = *p1;
*p1 = *p2;
*p2 = tmp;
p1++;
p2--;
}
}
void printf(const char *format, ...)
{
char **arg = (char **) &format;
int c;
char buf[20];
arg++;
while ((c = *format++) != 0)
{
if (c != '%')
console_putc(c);
else
{
char *p, *p2;
int pad0 = 0, pad = 0;
c = *format++;
if (c == '0')
{
pad0 = 1;
c = *format++;
}
if (c >= '0' && c <= '9')
{
pad = c - '0';
c = *format++;
}
switch (c)
{
case 'd':
case 'u':
case 'x':
itoa (buf, c, *((int *) arg++));
p = buf;
goto string;
break;
case 's':
p = *arg++;
if (! p)
p = "(null)";
string:
for (p2 = p; *p2; p2++);
for (; p2 < p + pad; p2++)
console_putc(pad0 ? '0' : ' ');
while (*p)
console_putc(*p++);
break;
default:
console_putc(*((int *) arg++));
break;
}
}
}
}

142
arch/multiboot2.c Normal file
View file

@ -0,0 +1,142 @@
#include "multiboot2.h"
#include "console.h"
static void itoa(char *buf, int base, int d);
static void printf(const char *format, ...);
void print_multiboot2_info(unsigned long addr)
{
struct multiboot_tag *tag;
unsigned size;
if (addr & 7)
{
printf ("Unaligned mbi: 0x%x\n", addr);
return;
}
size = *(unsigned *) addr;
printf ("Announced mbi size 0x%x\n", size);
for (
tag = (struct multiboot_tag *) (addr + 8);
tag->type != MULTIBOOT_TAG_TYPE_END;
tag = (struct multiboot_tag *) ((multiboot_uint8_t *) tag + ((tag->size + 7) & ~7)))
{
switch (tag->type)
{
case MULTIBOOT_TAG_TYPE_MODULE:
printf(
"Module at 0x%x-0x%x. Command line %s\n",
((struct multiboot_tag_module *) tag)->mod_start,
((struct multiboot_tag_module *) tag)->mod_end,
((struct multiboot_tag_module *) tag)->cmdline
);
break;
}
}
tag = (struct multiboot_tag *) ((multiboot_uint8_t *) tag + ((tag->size + 7) & ~7));
printf ("Total mbi size 0x%x\n", (unsigned) tag - addr);
}
void itoa(char *buf, int base, int d)
{
char *p = buf;
char *p1, *p2;
unsigned long ud = d;
int divisor = 10;
/*
* If %d is specified and D is minus, put '-' in the head.
* */
if (base == 'd' && d < 0)
{
*p++ = '-';
buf++;
ud = -d;
}
else if (base == 'x')
divisor = 16;
/*
* Divide UD by DIVISOR until UD == 0.
* */
do
{
int remainder = ud % divisor;
*p++ = (remainder < 10) ? remainder + '0' : remainder + 'a' - 10;
}
while (ud /= divisor);
/*
* Terminate BUF.
* */
*p = 0;
/*
* Reverse BUF.
* */
p1 = buf;
p2 = p - 1;
while (p1 < p2)
{
char tmp = *p1;
*p1 = *p2;
*p2 = tmp;
p1++;
p2--;
}
}
void printf(const char *format, ...)
{
char **arg = (char **) &format;
int c;
char buf[20];
arg++;
while ((c = *format++) != 0)
{
if (c != '%')
console_putc(c);
else
{
char *p, *p2;
int pad0 = 0, pad = 0;
c = *format++;
if (c == '0')
{
pad0 = 1;
c = *format++;
}
if (c >= '0' && c <= '9')
{
pad = c - '0';
c = *format++;
}
switch (c)
{
case 'd':
case 'u':
case 'x':
itoa (buf, c, *((int *) arg++));
p = buf;
goto string;
break;
case 's':
p = *arg++;
if (! p)
p = "(null)";
string:
for (p2 = p; *p2; p2++);
for (; p2 < p + pad; p2++)
console_putc(pad0 ? '0' : ' ');
while (*p)
console_putc(*p++);
break;
default:
console_putc(*((int *) arg++));
break;
}
}
}
}

2
arch/multiboot2.h
View file

@ -1,6 +1,8 @@
#ifndef MULTIBOOT_HEADER
#define MULTIBOOT_HEADER 1
void print_multiboot2_info(unsigned long addr);
/*
* How many bytes from the start of the file we search for the header.
* */