hypervisor/src/sample/srt0.s

/*
* ========== Copyright Header Begin ==========================================
*
* Hypervisor Software File: srt0.s
*
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
*
*  - Do no alter or remove copyright notices
*
*  - Redistribution and use of this software in source and binary forms, with
*    or without modification, are permitted provided that the following
*    conditions are met:
*
*  - Redistribution of source code must retain the above copyright notice,
*    this list of conditions and the following disclaimer.
*
*  - Redistribution in binary form must reproduce the above copyright notice,
*    this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
*    Neither the name of Sun Microsystems, Inc. or the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
*     This software is provided "AS IS," without a warranty of any kind.
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN
* OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR
* FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or
* intended for use in the design, construction, operation or maintenance of
* any nuclear facility.
*
* ========== Copyright Header End ============================================
*/
/*
 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

        .ident  "@(#)srt0.s     1.7     06/04/28 SMI"

        .file   "srt0.s"

#include <sys/asm_linkage.h>
#include <sys/privregs.h>
#include <sys/stack.h>

#include <hypervisor.h>

#if defined(lint)

/*ARGSUSED*/
void
start(void)
{}
#else
        .seg    ".text"
        .align  8
        .global end
        .global edata
        .global main

        .seg    ".bss"
        .align  8
!
! Create a stack just below start.
!
#define STACK_SIZE      0x14000

        .skip   STACK_SIZE
        .ebootstack:                    ! end --top-- of boot stack

        .seg    ".text"

        ENTRY(start)

        save    %sp, -SA(MINFRAME), %sp

        mov     %g1, %i0        ! Save RA BASE in %i0

        !
        ! Zero the bss [edata to end]
        !
        setn    edata, %g1, %o0
        setn    end, %g1, %i2
        mov     %g0, %o1
!       call    memset
        sub     %i2, %o0, %o2                   ! size

        restore %g0, %g0, %g0   ! Trivial restore

        !
        ! Switch to our new stack.
        !
        setn    (.ebootstack - STACK_BIAS), %g1, %o1
        mov     %g0, %i6
        mov     %g0, %i7
        mov     %g0, %o6
        mov     %g0, %o7
        add     %o1, -SA(MINFRAME), %sp

        !
        ! Set supervisor mode, interrupt level >= 13, traps enabled
        ! We don't set PSTATE_AM even though all our addresses are under 4G.
        !
        wrpr    %g0, 0xf, %pil
        wrpr    %g0, PSTATE_PEF+PSTATE_PRIV+PSTATE_IE, %pstate

        mov     %g0, %o1
        call    main                    ! main(rabase)
        mov     %g0, %o2

        mov     %g0, %o0
        mov     MACH_EXIT, %o5
        ta      FAST_TRAP
        ! print stupid error message here!
        ta      %xcc, 0x72
        ba      .
        nop
        SET_SIZE(start)
#endif  /* lint */