#define switch_to(prev,next,last) do { \
unsigned long esi,edi; \
- asm volatile("pushfl\n\t" \
- "pushl %%ebp\n\t" \
+ asm volatile("pushl %%ebp\n\t" \
"movl %%esp,%0\n\t" /* save ESP */ \
"movl %5,%%esp\n\t" /* restore ESP */ \
"movl $1f,%1\n\t" /* save EIP */ \
"jmp __switch_to\n" \
"1:\t" \
"popl %%ebp\n\t" \
- "popfl" \
:"=m" (prev->thread.esp),"=m" (prev->thread.eip), \
"=a" (last),"=S" (esi),"=D" (edi) \
:"m" (next->thread.esp),"m" (next->thread.eip), \