cpuid instruction clobbers eax/ebx/ecx/edx

2026-02-01 03:01:05 +00:00 · 2011-01-22 16:04:07 -05:00 · 2011-01-22 16:04:07 -05:00 · c90ea2bd6d
commit c90ea2bd6d
parent fdec7fe203
1 changed files with 1 additions and 1 deletions
--- a/main.cpp
+++ b/main.cpp
@ -3127,7 +3127,7 @@ void CallCPUID(int in, int& aret, int& cret)
        "mov %%ecx, %1;" // ecx into c
        :"=r"(a),"=r"(c) /* output */
        :"r"(in) /* input */
-        :"%eax","%ecx" /* clobbered register */
+        :"%eax","%ebx","%ecx","%edx" /* clobbered register */
    );
    aret = a;
    cret = c;