Subversion Repositories or1k

/*  cpu_asm.s

 *

 *  This file contains all assembly code for the Intel i386 implementation

 *  of RDBG.

 *

 * rdbg_cpu_asm.S,v 1.2 1999/08/10 16:41:34 joel Exp

 *

 */

#include 

        BEGIN_CODE

/*

 *  void copyback_data_cache_and_invalidate_instr_cache(addr, size)

 *

 *  This routine performs a copy of the data cache

 *  and invalidate the instruction cache

 */

        .p2align  1

        PUBLIC (copyback_data_cache_and_invalidate_instr_cache)

SYM (copyback_data_cache_and_invalidate_instr_cache):

        wbinvd

        ret

/*

 * void enterRdbg(void)

 *

 * This function perform a call to the exception 19

 * It is used :

 *   1 - in the user code, to simulate a Breakpoint.

 *       (with justSaveContext = 0)

 *   2 - in the RDBG code, to push a ctx in the list.

 *       (with justSaveContext = 1)

 *

 * In most of case, it will be use as described in 1.

 * The 2nd possibility will be used by RDBG to obtain

 * its own ctx

 */

        PUBLIC (enterRdbg)

SYM (enterRdbg):

        int $50

        ret

/*

 * void rtems_exception_prologue_50(void)

 *

 * Exception 50 is used to enter Rdbg

 *

 */

        .p2align 4

        PUBLIC (rtems_exception_prologue_50)

        PUBLIC (_Exception_Handler)

SYM (rtems_exception_prologue_50):

        pushl   $ 0

        pushl   $ 50

        jmp   SYM(_Exception_Handler) ;

END_CODE

END