攻克难题——字符串显示API

yourtion · May 4, 2016 · ae67519 · ae67519
1 parent d07ff5d
commit ae67519
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/21_day/console.c b/21_day/console.c
@@ -284,6 +284,7 @@ int cmd_app(struct CONSOLE *cons, int *fat, char *cmdline)
 	if (finfo != 0) {
 		/*找到文件的情况*/
 		p = (char *) memman_alloc_4k(memman, finfo->size);
+		*((int *) 0xfe8) = (int) p;
 		file_loadfile(finfo->clustno, finfo->size, p, fat, (char *) (ADR_DISKIMG + 0x003e00));
 		set_segmdesc(gdt + 1003, finfo->size - 1, (int) p, AR_CODE32_ER);
 		farcall(0, 1003 * 8);
@@ -297,13 +298,14 @@ int cmd_app(struct CONSOLE *cons, int *fat, char *cmdline)
 
 void hrb_api(int edi, int esi, int ebp, int esp, int ebx, int edx, int ecx, int eax)
 {
+	int cs_base = *((int *) 0xfe8);
 	struct CONSOLE *cons = (struct CONSOLE *) *((int *) 0x0fec);
 	if (edx == 1) {
 		cons_putchar(cons, eax & 0xff, 1);
 	} else if (edx == 2) {
-		cons_putstr0(cons, (char *) ebx);
+		cons_putstr0(cons, (char *) ebx + cs_base);
 	} else if (edx == 3) {
-		cons_putstr1(cons, (char *) ebx, ecx);
+		cons_putstr1(cons, (char *) ebx + cs_base, ecx);
 	}
 	return;
 }