Merge pull request #411 from nature011235/lab5

YingMuo · web-flow · commit 6bc14d812bba · 2025-05-01T11:53:55.000+08:00
[LAB5] 313551149
diff --git a/lab5/antiasan.c b/lab5/antiasan.c
@@ -2,5 +2,14 @@
 
 void antiasan(unsigned long addr)
 {
+    extern char gS[];
+   
+    unsigned long gS_addr = (unsigned long)gS;
+    unsigned long shadow_addr = (gS_addr >> 3) + 0x7fff8000;
+    
+    unsigned char *shadow = (unsigned char *)shadow_addr;
 
+    for (int i = 0; i < 5; i++) {
+        shadow[i] = 0;  
+    }
 }

Original file line number	Diff line number	Diff line change
`@@ -2,5 +2,14 @@`
`2`	`2`
`3`	`3`	`void antiasan(unsigned long addr)`
`4`	`4`	`{`
	`5`	`+ extern char gS[];`
	`6`	`+`
	`7`	`+ unsigned long gS_addr = (unsigned long)gS;`
	`8`	`+ unsigned long shadow_addr = (gS_addr >> 3) + 0x7fff8000;`
	`9`	`+`
	`10`	`+ unsigned char shadow = (unsigned char )shadow_addr;`
`5`	`11`
	`12`	`+ for (int i = 0; i < 5; i++) {`
	`13`	`+ shadow[i] = 0;`
	`14`	`+ }`
`6`	`15`	`}`