代码整理

12_day/bootpack.c

@@ -1,4 +1,4 @@
-/* bootpackのメイン */
+/* bootpack*/
 
 #include "bootpack.h"
 #include <stdio.h>
@@ -52,9 +52,9 @@ void HariMain(void)
 	shtctl = shtctl_init(memman, binfo->vram, binfo->scrnx, binfo->scrny);
 	sht_back  = sheet_alloc(shtctl);
 	sht_mouse = sheet_alloc(shtctl);
-	sht_win = sheet_alloc(shtctl);
+	sht_win   = sheet_alloc(shtctl);
 	buf_back  = (unsigned char *) memman_alloc_4k(memman, binfo->scrnx * binfo->scrny);
-	buf_win = (unsigned char *) memman_alloc_4k(memman, 160 * 52);
+	buf_win   = (unsigned char *) memman_alloc_4k(memman, 160 * 52);
 	sheet_setbuf(sht_back, buf_back, binfo->scrnx, binfo->scrny, -1); /* 没有透明色 */
 	sheet_setbuf(sht_mouse, buf_mouse, 16, 16, 99); /* 透明色号99 */
 	sheet_setbuf(sht_win, buf_win, 160, 52, -1); /* 没有透明色 */
@@ -65,13 +65,14 @@ void HariMain(void)
 	mx = (binfo->scrnx - 16) / 2; /* 按显示在画面中央来计算坐标 */
 	my = (binfo->scrny - 28 - 16) / 2;
 	sheet_slide(sht_mouse, mx, my);
-	sheet_slide(sht_win, 80, 72); 
+	sheet_slide(sht_win, 80, 72);
 	sheet_updown(sht_back,  0);
-	sheet_updown(sht_win, 1);
+	sheet_updown(sht_win,   1);
 	sheet_updown(sht_mouse, 2);
 	sprintf(s, "(%3d, %3d)", mx, my);
 	putfonts8_asc(buf_back, binfo->scrnx, 0, 0, COL8_FFFFFF, s);
-	sprintf(s, "memory %dMB free : %dKB", memtotal / (1024 * 1024), memman_total(memman) / 1024);
+	sprintf(s, "memory %dMB   free : %dKB",
+			memtotal / (1024 * 1024), memman_total(memman) / 1024);
 	putfonts8_asc(buf_back, binfo->scrnx, 0, 32, COL8_FFFFFF, s);
 	sheet_refresh(sht_back, 0, 0, binfo->scrnx, 48); /* 刷新文字 */
 
@@ -82,7 +83,8 @@ void HariMain(void)
 		sheet_refresh(sht_win, 40, 28, 120, 44); /* 到这里结束 */
 
 		io_cli();
-		if (fifo8_status(&keyfifo) + fifo8_status(&mousefifo) + fifo8_status(&timerfifo) + fifo8_status(&timerfifo2) + fifo8_status(&timerfifo3)== 0) {
+		if (fifo8_status(&keyfifo) + fifo8_status(&mousefifo) + fifo8_status(&timerfifo)
+				+ fifo8_status(&timerfifo2) + fifo8_status(&timerfifo3) == 0) {
 			io_sti(); /* 不做HLT */
 		} else {
 			if (fifo8_status(&keyfifo) != 0) {
@@ -176,21 +178,19 @@ void make_window8(unsigned char *buf, int xsize, int ysize, char *title)
 		"O$$$$$$$$$$$$$$@",
 		"@@@@@@@@@@@@@@@@"
 	};
-
 	int x, y;
 	char c;
-	boxfill8(buf, xsize, COL8_C6C6C6, 0, 0, xsize - 1, 0 );
-	boxfill8(buf, xsize, COL8_FFFFFF, 1, 1, xsize - 2, 1 );
-	boxfill8(buf, xsize, COL8_C6C6C6, 0, 0, 0, ysize - 1);
-	boxfill8(buf, xsize, COL8_FFFFFF, 1, 1, 1, ysize - 2);
-	boxfill8(buf, xsize, COL8_848484, xsize - 2, 1, xsize - 2, ysize - 2);
-	boxfill8(buf, xsize, COL8_000000, xsize - 1, 0, xsize - 1, ysize - 1);
-	boxfill8(buf, xsize, COL8_C6C6C6, 2, 2, xsize - 3, ysize - 3);
-	boxfill8(buf, xsize, COL8_000084, 3, 3, xsize - 4, 20 );
-	boxfill8(buf, xsize, COL8_848484, 1, ysize - 2, xsize - 2, ysize - 2);
-	boxfill8(buf, xsize, COL8_000000, 0, ysize - 1, xsize - 1, ysize - 1);
+	boxfill8(buf, xsize, COL8_C6C6C6, 0,         0,         xsize - 1, 0        );
+	boxfill8(buf, xsize, COL8_FFFFFF, 1,         1,         xsize - 2, 1        );
+	boxfill8(buf, xsize, COL8_C6C6C6, 0,         0,         0,         ysize - 1);
+	boxfill8(buf, xsize, COL8_FFFFFF, 1,         1,         1,         ysize - 2);
+	boxfill8(buf, xsize, COL8_848484, xsize - 2, 1,         xsize - 2, ysize - 2);
+	boxfill8(buf, xsize, COL8_000000, xsize - 1, 0,         xsize - 1, ysize - 1);
+	boxfill8(buf, xsize, COL8_C6C6C6, 2,         2,         xsize - 3, ysize - 3);
+	boxfill8(buf, xsize, COL8_000084, 3,         3,         xsize - 4, 20       );
+	boxfill8(buf, xsize, COL8_848484, 1,         ysize - 2, xsize - 2, ysize - 2);
+	boxfill8(buf, xsize, COL8_000000, 0,         ysize - 1, xsize - 1, ysize - 1);
 	putfonts8_asc(buf, xsize, 24, 4, COL8_FFFFFF, title);
-
 	for (y = 0; y < 14; y++) {
 		for (x = 0; x < 16; x++) {
 			c = closebtn[y][x];

12_day/bootpack.h

@@ -176,8 +176,9 @@ struct TIMER {
 	unsigned char data;
 };
 struct TIMERCTL {
-	unsigned int count;
-	struct TIMER timer[MAX_TIMER];
+	unsigned int count, next, using;
+	struct TIMER *timers[MAX_TIMER];
+	struct TIMER timers0[MAX_TIMER];
 };
 extern struct TIMERCTL timerctl;
 

12_day/int.c

@@ -1,6 +1,7 @@
 /*初始化关系 */
 
 #include "bootpack.h"
+#include <stdio.h>
 
 void init_pic(void)
 /* PIC初始化 */
@@ -24,8 +25,6 @@ void init_pic(void)
 	return;
 }
 
-#define PORT_KEYDAT		0x0060
-
 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 */

12_day/memory.c

@@ -1,11 +1,11 @@
-/* 内存管理 */
+/* <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֌W */
 
 #include "bootpack.h"
 
-#define EFLAGS_AC_BIT			0x00040000
+#define EFLAGS_AC_BIT		0x00040000
 #define CR0_CACHE_DISABLE	0x60000000
 
-unsigned int memtest(unsigned int start, unsigned int end) 
+unsigned int memtest(unsigned int start, unsigned int end)
 {
 	char flg486 = 0;
 	unsigned int eflg, cr0, i;
@@ -40,7 +40,8 @@ unsigned int memtest(unsigned int start, unsigned int end)
 	return i;
 }
 
-void memman_init(struct MEMMAN *man){
+void memman_init(struct MEMMAN *man)
+{
 	man->frees = 0;    /* 可用信息数目 */
 	man->maxfrees = 0; /* 用于观察可用状况：frees的最大值 */
 	man->lostsize = 0; /* 释放失败的内存的大小总和 */

12_day/mouse.c

@@ -4,7 +4,8 @@
 
 struct FIFO8 mousefifo;
 
-void inthandler2c(int *esp) {
+void inthandler2c(int *esp)
+{
 	/* 来自PS/2鼠标的中断 */
 	unsigned char data;
 	io_out8(PIC1_OCW2, 0x64);	/* 通知PIC IRQ-12 已经受理完毕 */
@@ -17,7 +18,8 @@ void inthandler2c(int *esp) {
 #define KEYCMD_SENDTO_MOUSE   0xd4
 #define MOUSECMD_ENABLE     0xf4
 
-void enable_mouse(struct MOUSE_DEC *mdec) {
+void enable_mouse(struct MOUSE_DEC *mdec)
+{
 	/* 鼠标有效 */
 	wait_KBC_sendready();
 	io_out8(PORT_KEYCMD, KEYCMD_SENDTO_MOUSE);
@@ -28,7 +30,8 @@ void enable_mouse(struct MOUSE_DEC *mdec) {
 	return;
 }
 
-int mouse_decode(struct MOUSE_DEC *mdec, unsigned char dat) {
+int mouse_decode(struct MOUSE_DEC *mdec, unsigned char dat)
+{
 	if (mdec->phase == 0) {
 		/* 等待鼠标的0xfa的阶段 */
 		if (dat == 0xfa) {

12_day/sheet.c

@@ -53,6 +53,78 @@ void sheet_setbuf(struct SHEET *sht, unsigned char *buf, int xsize, int ysize, i
 	return;
 }
 
+void sheet_refreshmap(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, int h0)
+{
+	int h, bx, by, vx, vy, bx0, by0, bx1, by1;
+	unsigned char *buf, sid, *map = ctl->map;
+	struct SHEET *sht;
+	if (vx0 < 0) { vx0 = 0; }
+	if (vy0 < 0) { vy0 = 0; }
+	if (vx1 > ctl->xsize) { vx1 = ctl->xsize; }
+	if (vy1 > ctl->ysize) { vy1 = ctl->ysize; }
+	for (h = h0; h <= ctl->top; h++) {
+		sht = ctl->sheets[h];
+		sid = sht - ctl->sheets0; /* 将进行了减法计算的地址作为图层号码使用 */
+		buf = sht->buf;
+		bx0 = vx0 - sht->vx0;
+		by0 = vy0 - sht->vy0;
+		bx1 = vx1 - sht->vx0;
+		by1 = vy1 - sht->vy0;
+		if (bx0 < 0) { bx0 = 0; }
+		if (by0 < 0) { by0 = 0; }
+		if (bx1 > sht->bxsize) { bx1 = sht->bxsize; }
+		if (by1 > sht->bysize) { by1 = sht->bysize; }
+		for (by = by0; by < by1; by++) {
+			vy = sht->vy0 + by;
+			for (bx = bx0; bx < bx1; bx++) {
+				vx = sht->vx0 + bx;
+				if (buf[by * sht->bxsize + bx] != sht->col_inv) {
+					map[vy * ctl->xsize + vx] = sid;
+				}
+			}
+		}
+	}
+	return;
+}
+
+void sheet_refreshsub(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, int h0, int h1)
+{
+	int h, bx, by, vx, vy, bx0, by0, bx1, by1;
+	unsigned char *buf, *vram = ctl->vram, *map = ctl->map, sid;
+	struct SHEET *sht;
+
+	/* 如果refresh的范围超出了画面则修正 */
+	if (vx0 < 0) { vx0 = 0; }
+	if (vy0 < 0) { vy0 = 0; }
+	if (vx1 > ctl->xsize) { vx1 = ctl->xsize; }
+	if (vy1 > ctl->ysize) { vy1 = ctl->ysize; }
+	for (h = h0; h <= h1; h++) {
+		sht = ctl->sheets[h];
+		buf = sht->buf;
+		sid = sht - ctl->sheets0;
+
+		/* 使用vx0～vy1，对bx0～by1进行倒推 */
+		bx0 = vx0 - sht->vx0;
+		by0 = vy0 - sht->vy0;
+		bx1 = vx1 - sht->vx0;
+		by1 = vy1 - sht->vy0;
+		if (bx0 < 0) { bx0 = 0; } /* 处理刷新范围在图层外侧 */
+		if (by0 < 0) { by0 = 0; }
+		if (bx1 > sht->bxsize) { bx1 = sht->bxsize; } /* 应对不同的重叠方式 */
+		if (by1 > sht->bysize) { by1 = sht->bysize; }
+		for (by = by0; by < by1; by++) {
+			vy = sht->vy0 + by;
+			for (bx = bx0; bx < bx1; bx++) {
+				vx = sht->vx0 + bx;
+				if (map[vy * ctl->xsize + vx] == sid) {
+					vram[vy * ctl->xsize + vx] = buf[by * sht->bxsize + bx];
+				}
+			}
+		}
+	}
+	return;
+}
+
 void sheet_updown(struct SHEET *sht, int height)
 {
 	struct SHTCTL *ctl = sht->ctl;
@@ -86,7 +158,7 @@ void sheet_updown(struct SHEET *sht, int height)
 			}
 			ctl->top--; /* 由于显示中的图层减少了一个，所以最上面的图层高度下降 */
 			sheet_refreshmap(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize, sht->vy0 + sht->bysize, 0);
-			sheet_refreshsub(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize, sht->vy0 + sht->bysize, 0, old - 1);		
+			sheet_refreshsub(ctl, sht->vx0, sht->vy0, sht->vx0 + sht->bxsize, sht->vy0 + sht->bysize, 0, old - 1);
 		}
 	} else if (old < height) { /* 比以前高 */
 		if (old >= 0) {
@@ -119,83 +191,6 @@ void sheet_refresh(struct SHEET *sht, int bx0, int by0, int bx1, int by1)
 	return;
 }
 
-void sheet_refreshsub(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, int h0, int h1)
-{
-	int h, bx, by, vx, vy, bx0, by0, bx1, by1;
-	unsigned char *buf, *vram = ctl->vram, *map = ctl->map, sid;
-	struct SHEET *sht;
-
-	/* 如果refresh的范围超出了画面则修正 */
-	if (vx0 < 0) { vx0 = 0; }
-	if (vy0 < 0) { vy0 = 0; }
-	if (vx1 > ctl->xsize) { vx1 = ctl->xsize; }
-	if (vy1 > ctl->ysize) { vy1 = ctl->ysize; }
-
-	for (h = h0; h <= ctl->top; h++) {
-		sht = ctl->sheets[h];
-		buf = sht->buf;
-		sid = sht -ctl->sheets0;
-
-		/* 使用vx0～vy1，对bx0～by1进行倒推 */
-		bx0 = vx0 - sht->vx0;
-		by0 = vy0 - sht->vy0;
-		bx1 = vx1 - sht->vx0;
-		by1 = vy1 - sht->vy0;
-		if (bx0 < 0) { bx0 = 0; } /* 处理刷新范围在图层外侧 */
-		if (by0 < 0) { by0 = 0; }
-		if (bx1 > sht->bxsize) { bx1 = sht->bxsize; } /* 应对不同的重叠方式 */
-		if (by1 > sht->bysize) { by1 = sht->bysize; }
-
-		for (by = by0; by < by1; by++) {
-			vy = sht->vy0 + by;
-			for (bx = bx0; bx < bx1; bx++) {
-				vx = sht->vx0 + bx;
-				if (map[vy * ctl->xsize + vx] == sid) {
-					vram[vy * ctl->xsize + vx] = buf[by * sht->bxsize + bx];
-				}
-			}
-		}
-	}
-	return;
-}
-
-void sheet_refreshmap(struct SHTCTL *ctl, int vx0, int vy0, int vx1, int vy1, int h0)
-{
-	int h, bx, by, vx, vy, bx0, by0, bx1, by1;
-	unsigned char *buf, sid, *map = ctl->map;
-	struct SHEET *sht;
-
-	if (vx0 < 0) { vx0 = 0; }
-	if (vy0 < 0) { vy0 = 0; }
-	if (vx1 > ctl->xsize) { vx1 = ctl->xsize; }
-	if (vy1 > ctl->ysize) { vy1 = ctl->ysize; }
-
-	for (h = h0; h <= ctl->top; h++) {
-		sht = ctl->sheets[h];
-		sid = sht - ctl->sheets0; /* 将进行了减法计算的地址作为图层号码使用 */
-		buf = sht->buf;
-		bx0 = vx0 - sht->vx0;
-		by0 = vy0 - sht->vy0;
-		bx1 = vx1 - sht->vx0;
-		by1 = vy1 - sht->vy0;
-		if (bx0 < 0) { bx0 = 0; }
-		if (by0 < 0) { by0 = 0; }
-		if (bx1 > sht->bxsize) { bx1 = sht->bxsize; }
-		if (by1 > sht->bysize) { by1 = sht->bysize; }
-
-		for (by = by0; by < by1; by++) {
-			vy = sht->vy0 + by;
-			for (bx = bx0; bx < bx1; bx++) {
-				vx = sht->vx0 + bx;
-				if (buf[by * sht->bxsize + bx] != sht->col_inv) {
-					map[vy * ctl->xsize + vx] = sid;
-				}
-			}
-		}
-	}
-	return;
-}
-
 void sheet_slide(struct SHEET *sht, int vx0, int vy0)
 {
 	struct SHTCTL *ctl = sht->ctl;

12_day/timer.c

@@ -2,13 +2,14 @@
 
 #include "bootpack.h"
 
-#define PIT_CTRL 0x0043
-#define PIT_CNT0 0x0040
-#define TIMER_FLAGS_ALLOC 1 /* 已配置状态 */
-#define TIMER_FLAGS_USING 2 /* 定时器运行中 */
+#define PIT_CTRL	0x0043
+#define PIT_CNT0	0x0040
 
 struct TIMERCTL timerctl;
 
+#define TIMER_FLAGS_ALLOC 1 /* 已配置状态 */
+#define TIMER_FLAGS_USING 2 /* 定时器运行中 */
+
 void init_pit(void)
 {
 	int i;
@@ -16,8 +17,10 @@ void init_pit(void)
 	io_out8(PIT_CNT0, 0x9c);
 	io_out8(PIT_CNT0, 0x2e);
 	timerctl.count = 0;
+	timerctl.next = 0xffffffff; /* 因为最初没有正在运行的定时器 */
+	timerctl.using = 0;
 	for (i = 0; i < MAX_TIMER; i++) {
-		timerctl.timer[i].flags = 0; /* 未使用 */
+	timerctl.timers0[i].flags = 0; /* 未使用 */
 	}
 	return;
 }
@@ -26,9 +29,9 @@ struct TIMER *timer_alloc(void)
 {
 	int i;
 	for (i = 0; i < MAX_TIMER; i++) {
-		if (timerctl.timer[i].flags == 0) {
-			timerctl.timer[i].flags = TIMER_FLAGS_ALLOC;
-			return &timerctl.timer[i];
+		if (timerctl.timers0[i].flags == 0) {
+			timerctl.timers0[i].flags = TIMER_FLAGS_ALLOC;
+			return &timerctl.timers0[i];
 		}
 	}
 	return 0; /* 没找到 */
@@ -49,24 +52,56 @@ void timer_init(struct TIMER *timer, struct FIFO8 *fifo, unsigned char data)
 
 void timer_settime(struct TIMER *timer, unsigned int timeout)
 {
-	timer->timeout = timeout;
+	int e, i, j;
+	timer->timeout = timeout + timerctl.count;
 	timer->flags = TIMER_FLAGS_USING;
+	e = io_load_eflags();
+	io_cli();
+	/* 搜索注册位置 */
+	for (i = 0; i < timerctl.using; i++) {
+		if (timerctl.timers[i]->timeout >= timer->timeout) {
+			break;
+		}
+	}
+	/* i号之后全部后移一位 */
+	for (j = timerctl.using; j > i; j--) {
+		timerctl.timers[j] = timerctl.timers[j - 1];
+	}
+	timerctl.using++;
+	/* 插入到空位上 */
+	timerctl.timers[i] = timer;
+	timerctl.next = timerctl.timers[0]->timeout;
+	io_store_eflags(e);
 	return;
 }
 
 void inthandler20(int *esp)
 {
-	int i;
+	int i, j;
 	io_out8(PIC0_OCW2, 0x60); /* 把IRQ-00信号接收完了的信息通知给PIC */
 	timerctl.count++;
-	for (i = 0; i < MAX_TIMER; i++) {
-		if (timerctl.timer[i].flags == TIMER_FLAGS_USING) {
-			timerctl.timer[i].timeout--;
-			if (timerctl.timer[i].timeout == 0) {
-				timerctl.timer[i].flags = TIMER_FLAGS_ALLOC;
-				fifo8_put(timerctl.timer[i].fifo, timerctl.timer[i].data);
-			}
+	if (timerctl.next > timerctl.count) {
+		return; /* 还不到下一个时刻，所以结束*/
+	}
+	timerctl.next = 0xffffffff;
+	for (i = 0; i < timerctl.using; i++) {
+		/* timers的定时器都处于动作中，所以不确认flags */
+		if (timerctl.timers[i]->timeout > timerctl.count) {
+			break;
 		}
+		/* 超时*/
+		timerctl.timers[i]->flags = TIMER_FLAGS_ALLOC;
+		fifo8_put(timerctl.timers[i]->fifo, timerctl.timers[i]->data);
+	}
+	/* 正好有i个定时器超时了。其余的进行移位。 */
+	timerctl.using -= i;
+	for (j = 0; j < timerctl.using; j++) {
+		timerctl.timers[j] = timerctl.timers[i + j];
+	}
+	if (timerctl.using > 0) {
+		timerctl.next = timerctl.timers[0]->timeout;
+	} else {
+		timerctl.next = 0xffffffff;
 	}
 	return;
 }