Avoid shifting a negative value

Because it's undefined behaviour.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>

diff --git a/include/arch/x86/processor.h b/include/arch/x86/processor.h
index c9f253f91b3bf4d7e9f9710ea0e4173ccc8190ca..afb4dd6b217d23ee939ce1373dd81ece6dc3b90c 100644 (file)
--- a/include/arch/x86/processor.h
+++ b/include/arch/x86/processor.h
@@ -134,7 +134,7 @@
 /* Segment-based Error Code - supplemental constants. */
 #define X86_EC_TABLE_MASK (3  << 1)
 #define X86_EC_SEL_SHIFT  3
-#define X86_EC_SEL_MASK   (-1 << X86_EC_SEL_SHIFT)
+#define X86_EC_SEL_MASK   (~0U << X86_EC_SEL_SHIFT)
 #define X86_EC_GDT        0
 #define X86_EC_LDT        X86_EC_TI