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Yourtion
2014-09-17 10:22:13 +08:00
parent 35ece81b87
commit b03f14235d
13 changed files with 5494 additions and 0 deletions
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1
07_day/!cons_9x.bat Normal file
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command

1
07_day/!cons_nt.bat Normal file
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cmd.exe

93
07_day/Makefile Normal file
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OBJS_BOOTPACK = bootpack.obj naskfunc.obj hankaku.obj graphic.obj dsctbl.obj \
int.obj
TOOLPATH = ../z_tools/
INCPATH = ../z_tools/haribote/
MAKE = $(TOOLPATH)make.exe -r
NASK = $(TOOLPATH)nask.exe
CC1 = $(TOOLPATH)cc1.exe -I$(INCPATH) -Os -Wall -quiet
GAS2NASK = $(TOOLPATH)gas2nask.exe -a
OBJ2BIM = $(TOOLPATH)obj2bim.exe
MAKEFONT = $(TOOLPATH)makefont.exe
BIN2OBJ = $(TOOLPATH)bin2obj.exe
BIM2HRB = $(TOOLPATH)bim2hrb.exe
RULEFILE = $(TOOLPATH)haribote/haribote.rul
EDIMG = $(TOOLPATH)edimg.exe
IMGTOL = $(TOOLPATH)imgtol.com
COPY = copy
DEL = del
# 默认动作
default :
$(MAKE) img
# 镜像文件生成
ipl10.bin : ipl10.nas Makefile
$(NASK) ipl10.nas ipl10.bin ipl10.lst
asmhead.bin : asmhead.nas Makefile
$(NASK) asmhead.nas asmhead.bin asmhead.lst
hankaku.bin : hankaku.txt Makefile
$(MAKEFONT) hankaku.txt hankaku.bin
hankaku.obj : hankaku.bin Makefile
$(BIN2OBJ) hankaku.bin hankaku.obj _hankaku
bootpack.bim : $(OBJS_BOOTPACK) Makefile
$(OBJ2BIM) @$(RULEFILE) out:bootpack.bim stack:3136k map:bootpack.map \
$(OBJS_BOOTPACK)
# 3MB+64KB=3136KB
bootpack.hrb : bootpack.bim Makefile
$(BIM2HRB) bootpack.bim bootpack.hrb 0
haribote.sys : asmhead.bin bootpack.hrb Makefile
copy /B asmhead.bin+bootpack.hrb haribote.sys
haribote.img : ipl10.bin haribote.sys Makefile
$(EDIMG) imgin:../z_tools/fdimg0at.tek \
wbinimg src:ipl10.bin len:512 from:0 to:0 \
copy from:haribote.sys to:@: \
imgout:haribote.img
# 其他指令
%.gas : %.c Makefile
$(CC1) -o $*.gas $*.c
%.nas : %.gas Makefile
$(GAS2NASK) $*.gas $*.nas
%.obj : %.nas Makefile
$(NASK) $*.nas $*.obj $*.lst
# 运行程序
img :
$(MAKE) haribote.img
run :
$(MAKE) img
$(COPY) haribote.img ..\z_tools\qemu\fdimage0.bin
$(MAKE) -C ../z_tools/qemu
install :
$(MAKE) img
$(IMGTOL) w a: haribote.img
clean :
-$(DEL) *.bin
-$(DEL) *.lst
-$(DEL) *.obj
-$(DEL) bootpack.map
-$(DEL) bootpack.bim
-$(DEL) bootpack.hrb
-$(DEL) haribote.sys
src_only :
$(MAKE) clean
-$(DEL) haribote.img

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; haribote-os boot asm
; TAB=4
BOTPAK EQU 0x00280000 ; 加载bootpack
DSKCAC EQU 0x00100000 ; 磁盘缓存的位置
DSKCAC0 EQU 0x00008000 ; 磁盘缓存的位置（实模式）
; BOOT_INFO相关
CYLS EQU 0x0ff0 ; 引导扇区设置
LEDS EQU 0x0ff1
VMODE EQU 0x0ff2 ; 关于颜色的信息
SCRNX EQU 0x0ff4 ; 分辨率X
SCRNY EQU 0x0ff6 ; 分辨率Y
VRAM EQU 0x0ff8 ; 图像缓冲区的起始地址
ORG 0xc200 ; 这个的程序要被装载的内存地址
; 画面モードを設定
MOV AL,0x13 ; VGA显卡，320x200x8bit
MOV AH,0x00
INT 0x10
MOV BYTE [VMODE],8 ; 屏幕的模式（参考C语言的引用）
MOV WORD [SCRNX],320
MOV WORD [SCRNY],200
MOV DWORD [VRAM],0x000a0000
; 通过BIOS获取指示灯状态
MOV AH,0x02
INT 0x16 ; keyboard BIOS
MOV [LEDS],AL
; 防止PIC接受所有中断
; AT兼容机的规范、PIC初始化
; 然后之前在CLI不做任何事就挂起
; PIC在同意后初始化
MOV AL,0xff
OUT 0x21,AL
NOP ; 不断执行OUT指令
OUT 0xa1,AL
CLI ; 进一步中断CPU
; 让CPU支持1M以上内存、设置A20GATE
CALL waitkbdout
MOV AL,0xd1
OUT 0x64,AL
CALL waitkbdout
MOV AL,0xdf ; enable A20
OUT 0x60,AL
CALL waitkbdout
; 保护模式转换
[INSTRSET "i486p"] ; 说明使用486指令
LGDT [GDTR0] ; 设置临时GDT
MOV EAX,CR0
AND EAX,0x7fffffff ; 使用bit31（禁用分页）
OR EAX,0x00000001 ; bit0到1转换（保护模式过渡）
MOV CR0,EAX
JMP pipelineflush
pipelineflush:
MOV AX,1*8 ; 写32bit的段
MOV DS,AX
MOV ES,AX
MOV FS,AX
MOV GS,AX
MOV SS,AX
; bootpack传递
MOV ESI,bootpack ; 源
MOV EDI,BOTPAK ; 目标
MOV ECX,512*1024/4
CALL memcpy
; 传输磁盘数据
; 从引导区开始
MOV ESI,0x7c00 ; 源
MOV EDI,DSKCAC ; 目标
MOV ECX,512/4
CALL memcpy
; 剩余的全部
MOV ESI,DSKCAC0+512 ; 源
MOV EDI,DSKCAC+512 ; 目标
MOV ECX,0
MOV CL,BYTE [CYLS]
IMUL ECX,512*18*2/4 ; 除以4得到字节数
SUB ECX,512/4 ; IPL偏移量
CALL memcpy
; 由于还需要asmhead才能完成
; 完成其余的bootpack任务
; bootpack启动
MOV EBX,BOTPAK
MOV ECX,[EBX+16]
ADD ECX,3 ; ECX += 3;
SHR ECX,2 ; ECX /= 4;
JZ skip ; 传输完成
MOV ESI,[EBX+20] ; 源
ADD ESI,EBX
MOV EDI,[EBX+12] ; 目标
CALL memcpy
skip:
MOV ESP,[EBX+12] ; 堆栈的初始化
JMP DWORD 2*8:0x0000001b
waitkbdout:
IN AL,0x64
AND AL,0x02
JNZ waitkbdout ; AND结果不为0跳转到waitkbdout
RET
memcpy:
MOV EAX,[ESI]
ADD ESI,4
MOV [EDI],EAX
ADD EDI,4
SUB ECX,1
JNZ memcpy ; 运算结果不为0跳转到memcpy
RET
; memcpy地址前缀大小
ALIGNB 16
GDT0:
RESB 8 ; 初始值
DW 0xffff,0x0000,0x9200,0x00cf ; 写32bit位段寄存器
DW 0xffff,0x0000,0x9a28,0x0047 ; 可执行的文件的32bit寄存器（bootpack用）
DW 0
GDTR0:
DW 8*3-1
DD GDT0
ALIGNB 16
bootpack:

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/* bootpack */
#include "bootpack.h"
#include <stdio.h>
void HariMain(void)
{
struct BOOTINFO *binfo = (struct BOOTINFO *) ADR_BOOTINFO;
char s[40], mcursor[256];
int mx, my;
init_gdtidt();
init_pic();
io_sti(); /* IDT/PICの初期化が終わったのでCPUの割り込み禁止を解除 */
init_palette();
init_screen8(binfo->vram, binfo->scrnx, binfo->scrny);
mx = (binfo->scrnx - 16) / 2; /* 计算画面的中心坐标*/
my = (binfo->scrny - 28 - 16) / 2;
init_mouse_cursor8(mcursor, COL8_008484);
putblock8_8(binfo->vram, binfo->scrnx, 16, 16, mx, my, mcursor, 16);
sprintf(s, "(%d, %d)", mx, my);
putfonts8_asc(binfo->vram, binfo->scrnx, 0, 0, COL8_FFFFFF, s);
io_out8(PIC0_IMR, 0xf9); /* PIC1とキーボードを許可(11111001) */
io_out8(PIC1_IMR, 0xef); /* マウスを許可(11101111) */
for (;;) {
io_hlt();
}
}

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/* asmhead.nas */
struct BOOTINFO { /* 0x0ff0-0x0fff */
char cyls; /* 启动区读磁盘读到此为止 */
char leds; /* 启动时键盘的LED的状态 */
char vmode; /* 显卡模式为多少位彩色 */
char reserve;
short scrnx, scrny; /* 画面分辨率 */
char *vram;
};
#define ADR_BOOTINFO 0x00000ff0
/* naskfunc.nas */
void io_hlt(void);
void io_cli(void);
void io_sti(void);
void io_out8(int port, int data);
int io_load_eflags(void);
void io_store_eflags(int eflags);
void load_gdtr(int limit, int addr);
void load_idtr(int limit, int addr);
void asm_inthandler21(void);
void asm_inthandler27(void);
void asm_inthandler2c(void);
/* graphic.c */
void init_palette(void);
void set_palette(int start, int end, unsigned char *rgb);
void boxfill8(unsigned char *vram, int xsize, unsigned char c, int x0, int y0, int x1, int y1);
void init_screen8(char *vram, int x, int y);
void putfont8(char *vram, int xsize, int x, int y, char c, char *font);
void putfonts8_asc(char *vram, int xsize, int x, int y, char c, unsigned char *s);
void init_mouse_cursor8(char *mouse, char bc);
void putblock8_8(char *vram, int vxsize, int pxsize,
int pysize, int px0, int py0, char *buf, int bxsize);
#define COL8_000000 0
#define COL8_FF0000 1
#define COL8_00FF00 2
#define COL8_FFFF00 3
#define COL8_0000FF 4
#define COL8_FF00FF 5
#define COL8_00FFFF 6
#define COL8_FFFFFF 7
#define COL8_C6C6C6 8
#define COL8_840000 9
#define COL8_008400 10
#define COL8_848400 11
#define COL8_000084 12
#define COL8_840084 13
#define COL8_008484 14
#define COL8_848484 15
/* dsctbl.c */
struct SEGMENT_DESCRIPTOR {
short limit_low, base_low;
char base_mid, access_right;
char limit_high, base_high;
};
struct GATE_DESCRIPTOR {
short offset_low, selector;
char dw_count, access_right;
short offset_high;
};
void init_gdtidt(void);
void set_segmdesc(struct SEGMENT_DESCRIPTOR *sd, unsigned int limit, int base, int ar);
void set_gatedesc(struct GATE_DESCRIPTOR *gd, int offset, int selector, int ar);
#define ADR_IDT 0x0026f800
#define LIMIT_IDT 0x000007ff
#define ADR_GDT 0x00270000
#define LIMIT_GDT 0x0000ffff
#define ADR_BOTPAK 0x00280000
#define LIMIT_BOTPAK 0x0007ffff
#define AR_DATA32_RW 0x4092
#define AR_CODE32_ER 0x409a
#define AR_INTGATE32 0x008e
/* int.c */
void init_pic(void);
void inthandler21(int *esp);
void inthandler27(int *esp);
void inthandler2c(int *esp);
#define PIC0_ICW1 0x0020
#define PIC0_OCW2 0x0020
#define PIC0_IMR 0x0021
#define PIC0_ICW2 0x0021
#define PIC0_ICW3 0x0021
#define PIC0_ICW4 0x0021
#define PIC1_ICW1 0x00a0
#define PIC1_OCW2 0x00a0
#define PIC1_IMR 0x00a1
#define PIC1_ICW2 0x00a1
#define PIC1_ICW3 0x00a1
#define PIC1_ICW4 0x00a1

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/* GDT、IDT、descriptor table 关系处理 */
#include "bootpack.h"
void init_gdtidt(void)
{
struct SEGMENT_DESCRIPTOR *gdt = (struct SEGMENT_DESCRIPTOR *) ADR_GDT;
struct GATE_DESCRIPTOR *idt = (struct GATE_DESCRIPTOR *) ADR_IDT;
int i;
/* GDT初始化 */
for (i = 0; i <= LIMIT_GDT / 8; i++) {
set_segmdesc(gdt + i, 0, 0, 0);
}
set_segmdesc(gdt + 1, 0xffffffff, 0x00000000, AR_DATA32_RW);
set_segmdesc(gdt + 2, LIMIT_BOTPAK, ADR_BOTPAK, AR_CODE32_ER);
load_gdtr(LIMIT_GDT, ADR_GDT);
/* IDT初始化 */
for (i = 0; i <= LIMIT_IDT / 8; i++) {
set_gatedesc(idt + i, 0, 0, 0);
}
load_idtr(LIMIT_IDT, ADR_IDT);
/* IDT设置*/
set_gatedesc(idt + 0x21, (int) asm_inthandler21, 2 * 8, AR_INTGATE32);
set_gatedesc(idt + 0x27, (int) asm_inthandler27, 2 * 8, AR_INTGATE32);
set_gatedesc(idt + 0x2c, (int) asm_inthandler2c, 2 * 8, AR_INTGATE32);
return;
}
void set_segmdesc(struct SEGMENT_DESCRIPTOR *sd, unsigned int limit, int base, int ar)
{
if (limit > 0xfffff) {
ar |= 0x8000; /* G_bit = 1 */
limit /= 0x1000;
}
sd->limit_low = limit & 0xffff;
sd->base_low = base & 0xffff;
sd->base_mid = (base >> 16) & 0xff;
sd->access_right = ar & 0xff;
sd->limit_high = ((limit >> 16) & 0x0f) | ((ar >> 8) & 0xf0);
sd->base_high = (base >> 24) & 0xff;
return;
}
void set_gatedesc(struct GATE_DESCRIPTOR *gd, int offset, int selector, int ar)
{
gd->offset_low = offset & 0xffff;
gd->selector = selector;
gd->dw_count = (ar >> 8) & 0xff;
gd->access_right = ar & 0xff;
gd->offset_high = (offset >> 16) & 0xffff;
return;
}

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/* 关于绘图部分的处理 */
#include "bootpack.h"
void init_palette(void)
{
static unsigned char table_rgb[16 * 3] = {
0x00, 0x00, 0x00, /* 0:黑 */
0xff, 0x00, 0x00, /* 1:梁红 */
0x00, 0xff, 0x00, /* 2:亮绿 */
0xff, 0xff, 0x00, /* 3:亮黄 */
0x00, 0x00, 0xff, /* 4:亮蓝 */
0xff, 0x00, 0xff, /* 5:亮紫 */
0x00, 0xff, 0xff, /* 6:浅亮蓝 */
0xff, 0xff, 0xff, /* 7:白 */
0xc6, 0xc6, 0xc6, /* 8:亮灰 */
0x84, 0x00, 0x00, /* 9:暗红 */
0x00, 0x84, 0x00, /* 10:暗绿 */
0x84, 0x84, 0x00, /* 11:暗黄 */
0x00, 0x00, 0x84, /* 12:暗青 */
0x84, 0x00, 0x84, /* 13:暗紫 */
0x00, 0x84, 0x84, /* 14:浅暗蓝 */
0x84, 0x84, 0x84 /* 15:暗灰 */
};
set_palette(0, 15, table_rgb);
return;
/* C语言中的static char语句只能用于数据，相当于汇编中的DB指令 */
}
void set_palette(int start, int end, unsigned char *rgb)
{
int i, eflags;
eflags = io_load_eflags(); /* 记录中断许可标志的值 */
io_cli(); /* 将中断许可标志置为0,禁止中断 */
io_out8(0x03c8, start);
for (i = start; i <= end; i++) {
io_out8(0x03c9, rgb[0] / 4);
io_out8(0x03c9, rgb[1] / 4);
io_out8(0x03c9, rgb[2] / 4);
rgb += 3;
}
io_store_eflags(eflags); /* 复原中断许可标志 */
return;
}
void boxfill8(unsigned char *vram, int xsize, unsigned char c, int x0, int y0, int x1, int y1)
{
int x, y;
for (y = y0; y <= y1; y++) {
for (x = x0; x <= x1; x++)
vram[y * xsize + x] = c;
}
return;
}
void init_screen8(char *vram, int x, int y)
{
boxfill8(vram, x, COL8_008484, 0, 0, x - 1, y - 29);
boxfill8(vram, x, COL8_C6C6C6, 0, y - 28, x - 1, y - 28);
boxfill8(vram, x, COL8_FFFFFF, 0, y - 27, x - 1, y - 27);
boxfill8(vram, x, COL8_C6C6C6, 0, y - 26, x - 1, y - 1);
boxfill8(vram, x, COL8_FFFFFF, 3, y - 24, 59, y - 24);
boxfill8(vram, x, COL8_FFFFFF, 2, y - 24, 2, y - 4);
boxfill8(vram, x, COL8_848484, 3, y - 4, 59, y - 4);
boxfill8(vram, x, COL8_848484, 59, y - 23, 59, y - 5);
boxfill8(vram, x, COL8_000000, 2, y - 3, 59, y - 3);
boxfill8(vram, x, COL8_000000, 60, y - 24, 60, y - 3);
boxfill8(vram, x, COL8_848484, x - 47, y - 24, x - 4, y - 24);
boxfill8(vram, x, COL8_848484, x - 47, y - 23, x - 47, y - 4);
boxfill8(vram, x, COL8_FFFFFF, x - 47, y - 3, x - 4, y - 3);
boxfill8(vram, x, COL8_FFFFFF, x - 3, y - 24, x - 3, y - 3);
return;
}
void putfont8(char *vram, int xsize, int x, int y, char c, char *font)
{
int i;
char *p, d /* data */;
for (i = 0; i < 16; i++) {
p = vram + (y + i) * xsize + x;
d = font[i];
if ((d & 0x80) != 0) { p[0] = c; }
if ((d & 0x40) != 0) { p[1] = c; }
if ((d & 0x20) != 0) { p[2] = c; }
if ((d & 0x10) != 0) { p[3] = c; }
if ((d & 0x08) != 0) { p[4] = c; }
if ((d & 0x04) != 0) { p[5] = c; }
if ((d & 0x02) != 0) { p[6] = c; }
if ((d & 0x01) != 0) { p[7] = c; }
}
return;
}
void putfonts8_asc(char *vram, int xsize, int x, int y, char c, unsigned char *s)
{
extern char hankaku[4096];
/* C语言中，字符串都是以0x00结尾 */
for (; *s != 0x00; s++) {
putfont8(vram, xsize, x, y, c, hankaku + *s * 16);
x += 8;
}
return;
}
void init_mouse_cursor8(char *mouse, char bc)
/* 鼠标的数据准备（16x16） */
{
static char cursor[16][16] = {
"**************..",
"*OOOOOOOOOOO*...",
"*OOOOOOOOOO*....",
"*OOOOOOOOO*.....",
"*OOOOOOOO*......",
"*OOOOOOO*.......",
"*OOOOOOO*.......",
"*OOOOOOOO*......",
"*OOOO**OOO*.....",
"*OOO*..*OOO*....",
"*OO*....*OOO*...",
"*O*......*OOO*..",
"**........*OOO*.",
"*..........*OOO*",
"............*OO*",
".............***"
};
int x, y;
for (y = 0; y < 16; y++) {
for (x = 0; x < 16; x++) {
if (cursor[y][x] == '*') {
mouse[y * 16 + x] = COL8_000000;
}
if (cursor[y][x] == 'O') {
mouse[y * 16 + x] = COL8_FFFFFF;
}
if (cursor[y][x] == '.') {
mouse[y * 16 + x] = bc;
}
}
}
return;
}
void putblock8_8(char *vram, int vxsize, int pxsize,
int pysize, int px0, int py0, char *buf, int bxsize)
{
int x, y;
for (y = 0; y < pysize; y++) {
for (x = 0; x < pxsize; x++) {
vram[(py0 + y) * vxsize + (px0 + x)] = buf[y * bxsize + x];
}
}
return;
}

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/*初始化关系 */
#include "bootpack.h"
void init_pic(void)
/* PIC初始化 */
{
io_out8(PIC0_IMR, 0xff ); /* 禁止所有中断 */
io_out8(PIC1_IMR, 0xff ); /* 禁止所有中断 */
io_out8(PIC0_ICW1, 0x11 ); /* 边缘触发模式（edge trigger mode） */
io_out8(PIC0_ICW2, 0x20 ); /* IRQ0-7由INT20-27接收 */
io_out8(PIC0_ICW3, 1 << 2); /* PIC1由IRQ2相连 */
io_out8(PIC0_ICW4, 0x01 ); /* 无缓冲区模式 */
io_out8(PIC1_ICW1, 0x11 ); /* 边缘触发模式（edge trigger mode） */
io_out8(PIC1_ICW2, 0x28 ); /* IRQ8-15由INT28-2f接收 */
io_out8(PIC1_ICW3, 2 ); /* PIC1由IRQ2连接 */
io_out8(PIC1_ICW4, 0x01 ); /* 无缓冲区模式 */
io_out8(PIC0_IMR, 0xfb ); /* 11111011 PIC1以外全部禁止 */
io_out8(PIC1_IMR, 0xff ); /* 11111111 禁止所有中断 */
return;
}
void inthandler21(int *esp)
/* 来自PS/2键盘的中断 */
{
struct BOOTINFO *binfo = (struct BOOTINFO *) ADR_BOOTINFO;
boxfill8(binfo->vram, binfo->scrnx, COL8_000000, 0, 0, 32 * 8 - 1, 15);
putfonts8_asc(binfo->vram, binfo->scrnx, 0, 0, COL8_FFFFFF, "INT 21 (IRQ-1) : PS/2 keyboard");
for (;;) {
io_hlt();
}
}
void inthandler2c(int *esp)
/* 来自PS/2鼠标的中断 */
{
struct BOOTINFO *binfo = (struct BOOTINFO *) ADR_BOOTINFO;
boxfill8(binfo->vram, binfo->scrnx, COL8_000000, 0, 0, 32 * 8 - 1, 15);
putfonts8_asc(binfo->vram, binfo->scrnx, 0, 0, COL8_FFFFFF, "INT 2C (IRQ-12) : PS/2 mouse");
for (;;) {
io_hlt();
}
}
void inthandler27(int *esp)
/* PIC0中断的不完整策略 */
/* 这个中断在Athlon64X2上通过芯片组提供的便利，只需执行一次 */
/* 这个中断只是接收，不执行任何操作 */
/* 为什么不处理？
→ 因为这个中断可能是电气噪声引发的、只是处理一些重要的情况。*/
{
io_out8(PIC0_OCW2, 0x67); /* 通知PIC的IRQ-07（参考7-1） */
return;
}

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; haribote-ipl
; TAB=4
CYLS EQU 10 ; 声明CYLS=10
ORG 0x7c00 ; 指明程序装载地址
; 标准FAT12格式软盘专用的代码 Stand FAT12 format floppy code
JMP entry
DB 0x90
DB "HARIBOTE" ; 启动扇区名称（8字节）
DW 512 ; 每个扇区（sector）大小（必须512字节）
DB 1 ; 簇（cluster）大小（必须为1个扇区）
DW 1 ; FAT起始位置（一般为第一个扇区）
DB 2 ; FAT个数（必须为2）
DW 224 ; 根目录大小（一般为224项）
DW 2880 ; 该磁盘大小（必须为2880扇区1440*1024/512）
DB 0xf0 ; 磁盘类型（必须为0xf0）
DW 9 ; FAT的长度（必??9扇区）
DW 18 ; 一个磁道（track）有几个扇区（必须为18）
DW 2 ; 磁头数（必??2）
DD 0 ; 不使用分区，必须是0
DD 2880 ; 重写一次磁盘大小
DB 0,0,0x29 ; 意义不明（固定）
DD 0xffffffff ; （可能是）卷标号码
DB "HARIBOTEOS " ; 磁盘的名称（必须为11字?，不足填空格）
DB "FAT12 " ; 磁盘格式名称（必??8字?，不足填空格）
RESB 18 ; 先空出18字节
; 程序主体
entry:
MOV AX,0 ; 初始化寄存器
MOV SS,AX
MOV SP,0x7c00
MOV DS,AX
; 读取磁盘
MOV AX,0x0820
MOV ES,AX
MOV CH,0 ; 柱面0
MOV DH,0 ; 磁头0
MOV CL,2 ; 扇区2
readloop:
MOV SI,0 ; 记录失败次数寄存器
retry:
MOV AH,0x02 ; AH=0x02 : 读入磁盘
MOV AL,1 ; 1个扇区
MOV BX,0
MOV DL,0x00 ; A驱动器
INT 0x13 ; 调用磁盘BIOS
JNC next ; 没出错则跳转到fin
ADD SI,1 ; 往SI加1
CMP SI,5 ; 比较SI与5
JAE error ; SI >= 5 跳转到error
MOV AH,0x00
MOV DL,0x00 ; A驱动器
INT 0x13 ; 重置驱动器
JMP retry
next:
MOV AX,ES ; 把内存地址后移0x200（512/16十六进制转换）
ADD AX,0x0020
MOV ES,AX ; ADD ES,0x020因为没有ADD ES，只能通过AX进行
ADD CL,1 ; 往CL里面加1
CMP CL,18 ; 比较CL与18
JBE readloop ; CL <= 18 跳转到readloop
MOV CL,1
ADD DH,1
CMP DH,2
JB readloop ; DH < 2 跳转到readloop
MOV DH,0
ADD CH,1
CMP CH,CYLS
JB readloop ; CH < CYLS 跳转到readloop
; 读取完毕，跳转到haribote.sys执行！
MOV [0x0ff0],CH ; IPLがどこまで読んだのかをメモ
JMP 0xc200
error:
MOV SI,msg
putloop:
MOV AL,[SI]
ADD SI,1 ; 给SI加1
CMP AL,0
JE fin
MOV AH,0x0e ; 显示一个文字
MOV BX,15 ; 指定字符颜色
INT 0x10 ; 调用显卡BIOS
JMP putloop
fin:
HLT ; 让CPU停止，等待指令
JMP fin ; 无限循环
msg:
DB 0x0a, 0x0a ; 换行两次
DB "load error"
DB 0x0a ; 换行
DB 0
RESB 0x7dfe-$ ; 填写0x00直到0x001fe
DB 0x55, 0xaa

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..\z_tools\make.exe %1 %2 %3 %4 %5 %6 %7 %8 %9

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; naskfunc
; TAB=4
[FORMAT "WCOFF"] ; 制作目标文件的模式
[INSTRSET "i486p"] ; 使用到486为止的指令
[BITS 32] ; 3制作32位模式用的机器语言
[FILE "naskfunc.nas"] ; 文件名
GLOBAL _io_hlt, _io_cli, _io_sti, _io_stihlt
GLOBAL _io_in8, _io_in16, _io_in32
GLOBAL _io_out8, _io_out16, _io_out32
GLOBAL _io_load_eflags, _io_store_eflags
GLOBAL _load_gdtr, _load_idtr
GLOBAL _asm_inthandler21, _asm_inthandler27, _asm_inthandler2c
EXTERN _inthandler21, _inthandler27, _inthandler2c
[SECTION .text]
_io_hlt: ; void io_hlt(void);
HLT
RET
_io_cli: ; void io_cli(void);
CLI
RET
_io_sti: ; void io_sti(void);
STI
RET
_io_stihlt: ; void io_stihlt(void);
STI
HLT
RET
_io_in8: ; int io_in8(int port);
MOV EDX,[ESP+4] ; port
MOV EAX,0
IN AL,DX
RET
_io_in16: ; int io_in16(int port);
MOV EDX,[ESP+4] ; port
MOV EAX,0
IN AX,DX
RET
_io_in32: ; int io_in32(int port);
MOV EDX,[ESP+4] ; port
IN EAX,DX
RET
_io_out8: ; void io_out8(int port, int data);
MOV EDX,[ESP+4] ; port
MOV AL,[ESP+8] ; data
OUT DX,AL
RET
_io_out16: ; void io_out16(int port, int data);
MOV EDX,[ESP+4] ; port
MOV EAX,[ESP+8] ; data
OUT DX,AX
RET
_io_out32: ; void io_out32(int port, int data);
MOV EDX,[ESP+4] ; port
MOV EAX,[ESP+8] ; data
OUT DX,EAX
RET
_io_load_eflags: ; int io_load_eflags(void);
PUSHFD ; PUSH EFLAGS
POP EAX
RET
_io_store_eflags: ; void io_store_eflags(int eflags);
MOV EAX,[ESP+4]
PUSH EAX
POPFD ; POP EFLAGS
RET
_load_gdtr: ; void load_gdtr(int limit, int addr);
MOV AX,[ESP+4] ; limit
MOV [ESP+6],AX
LGDT [ESP+6]
RET
_load_idtr: ; void load_idtr(int limit, int addr);
MOV AX,[ESP+4] ; limit
MOV [ESP+6],AX
LIDT [ESP+6]
RET
_asm_inthandler21:
PUSH ES
PUSH DS
PUSHAD
MOV EAX,ESP
PUSH EAX
MOV AX,SS
MOV DS,AX
MOV ES,AX
CALL _inthandler21
POP EAX
POPAD
POP DS
POP ES
IRETD
_asm_inthandler27:
PUSH ES
PUSH DS
PUSHAD
MOV EAX,ESP
PUSH EAX
MOV AX,SS
MOV DS,AX
MOV ES,AX
CALL _inthandler27
POP EAX
POPAD
POP DS
POP ES
IRETD
_asm_inthandler2c:
PUSH ES
PUSH DS
PUSHAD
MOV EAX,ESP
PUSH EAX
MOV AX,SS
MOV DS,AX
MOV ES,AX
CALL _inthandler2c
POP EAX
POPAD
POP DS
POP ES
IRETD