On 10/20/2012 05:40 PM, James Eder wrote:
+ /* Intel says we need a zeroed 16-byte aligned buffer */
+ char buffer[512 + 16];
+ XMM_SAVE_AREA32 *state = (XMM_SAVE_AREA32 *)(((ULONG_PTR)buffer + 15) &
~15);
+ memset(buffer, 0, sizeof(buffer));
+
+ __asm__ __volatile__( "fxsave %0" : "=m" (*state) : "m" (*state) );
Wouldn't this be simpler?
DECLSPEC_ALIGN(16) XMM_SAVE_AREA32 state;
memset(state, 0, sizeof(state));
__asm__ __volatile__("fxsave %0" : "=m" (*&state) : "m" (*&state));
May also want to make sure the two structs are packed.
