Subversion Repositories openrisc

/* Copyright 2009, 2010 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see .

   This file is part of the gdb testsuite.

   It tests displaced stepping over various insns that require special

   handling.  */

        .text

        .global main

main:

        nop

/***********************************************/

/* Test call/ret.  */

        nop

        .global test_call

test_call:

        call test_call_subr

        nop

        .global test_ret_end

test_ret_end:

        nop

/***********************************************/

/* Absolute jump with leading prefixes.

   These don't occur in normal code, but gdb should still DTRT.  */

        nop

        .global test_prefixed_abs_jump

test_prefixed_abs_jump:

        ds

        jmp *test_prefixed_abs_jump_addr

        .data

test_prefixed_abs_jump_addr:

        .4byte test_prefixed_abs_jump_target

        .text

test_prefixed_abs_jump_target:

        nop

        .global test_prefixed_abs_jump_end

test_prefixed_abs_jump_end:

        nop

/***********************************************/

/* Test syscall.  */

        mov $0x14,%eax /* getpid */

        .global test_syscall

test_syscall:

        int $0x80

        nop

        .global test_syscall_end

test_syscall_end:

        nop

/***********************************************/

/* Test syscall again, this time with a prefix.

   These don't occur in normal code, but gdb should still DTRT.  */

        mov $0x14,%eax /* getpid */

        .global test_prefixed_syscall

test_prefixed_syscall:

        repnz

        int $0x80

        nop

        .global test_prefixed_syscall_end

test_prefixed_syscall_end:

        nop

/***********************************************/

/* Test stepping over int3.

   The prefixes are pointless, but it's possible, so we exercise it.  */

        nop

        .global test_int3

test_int3:

        repz

        repz

        int3

        nop

        .global test_int3_end

test_int3_end:

        nop

/***********************************************/

/* all done */

        pushl $0

        call exit

        hlt

/***********************************************/

/* subroutine to help test call/ret */

test_call_subr:

        nop

        .global test_call_end

test_call_end:

        nop

        .global test_ret

test_ret:

        ret