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Add memory clobbers to several asm statements,
[pintos-anon]
/
src
/
threads
/
init.c
diff --git
a/src/threads/init.c
b/src/threads/init.c
index 2931704120c67bf39441ce56aa469a128b556e39..5961deba3e6f8d82cd0e75abab89321d87cda597 100644
(file)
--- a/
src/threads/init.c
+++ b/
src/threads/init.c
@@
-382,7
+382,7
@@
power_off (void)
for (p = s; *p != '\0'; p++)
outb (0x8900, *p);
- asm
("cli; hlt
");
+ asm
volatile ("cli; hlt" : : : "memory
");
printf ("still running...\n");
for (;;);
}