Stefan Reinauer wrote: > drop most of the crappy vm86 code and replace it with a rewritten > version that has all assembler in a .S file and all C code in a .c > file. Also, remove requirement to move around between GDTs. > > Signed-off-by: Stefan Reinauer <[email protected]>
> +++ util/x86emu/x86_asm.S (revision 0) .. > + movl %cr0, %eax > + andl $0xFFFFFFFE, %eax > + movl %eax, %cr0 > + movl %cr0, %eax > + orl $0x0000001, %eax /* PE = 1 */ > + movl %eax, %cr0 > + movl %cr0, %eax > + andl $~1, %eax > + movl %eax, %cr0 > + movl %cr0, %eax > + orl $(1 << 0), %eax > + movl %eax, %cr0 > + movl %cr0, %eax > + orl $(1 << 0), %eax > + movl %eax, %cr0 > + movl %cr0, %eax > + andl $~(1 << 0), %eax > + movl %eax, %cr0 It would be neat if these different ways of changing PE could be streamlined a little. And could it be good to cli/sti around the PE changes? If not; Acked-by: Peter Stuge <[email protected]> -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
