* @ret rc Return status code
*/
int pxe_start_nbp ( void ) {
- int discard_b, discard_c, discard_d;
+ int discard_b, discard_c, discard_d, discard_D;
uint16_t rc;
/* Far call to PXE NBP */
- __asm__ __volatile__ ( REAL_CODE ( "pushw %%cx\n\t"
- "pushw %%ax\n\t"
- "movw %%cx, %%es\n\t"
+ __asm__ __volatile__ ( REAL_CODE ( "movw %%cx, %%es\n\t"
+ "pushw %%es\n\t"
+ "pushw %%di\n\t"
"sti\n\t"
"lcall $0, $0x7c00\n\t"
"addw $4, %%sp\n\t" )
: "=a" ( rc ), "=b" ( discard_b ),
- "=c" ( discard_c ), "=d" ( discard_d )
- : "a" ( __from_text16 ( &ppxe ) ),
- "b" ( __from_text16 ( &pxenv ) ),
+ "=c" ( discard_c ), "=d" ( discard_d ),
+ "=D" ( discard_D )
+ : "a" ( 0 ), "b" ( __from_text16 ( &pxenv ) ),
"c" ( rm_cs ),
- "d" ( virt_to_phys ( &pxenv ) )
- : "esi", "edi", "ebp", "memory" );
+ "d" ( virt_to_phys ( &pxenv ) ),
+ "D" ( __from_text16 ( &ppxe ) )
+ : "esi", "ebp", "memory" );
return rc;
}