From: Ben Pfaff Date: Sun, 9 Apr 2006 19:52:03 +0000 (+0000) Subject: Remove unnecessary test for switching from null current thread. X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=424970679fb7dec648531888ae26919b784de1b6;p=pintos-anon Remove unnecessary test for switching from null current thread. Thanks to "Waqar Mohsin" for reporting this. --- diff --git a/src/threads/switch.S b/src/threads/switch.S index 6cb70aa..48fc588 100644 --- a/src/threads/switch.S +++ b/src/threads/switch.S @@ -33,10 +33,7 @@ switch_threads: # Save current stack pointer to old thread's stack, if any. movl SWITCH_CUR(%esp), %eax - test %eax, %eax - jz 1f movl %esp, (%eax,%edx,1) -1: # Restore stack pointer from new thread's stack. movl SWITCH_NEXT(%esp), %ecx