URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
[/] [openrisc/] [tags/] [or1ksim/] [or1ksim-0.5.1rc1/] [testsuite/] [test-code-or1k/] [inst-set-test/] [is-find-test.S] - Rev 115
Go to most recent revision | Compare with Previous | Blame | View Log
/* is-find.test.S. l.ff1 and l.fl1 instruction test of Or1ksim
*
* Copyright (C) 1999-2006 OpenCores
* Copyright (C) 2010 Embecosm Limited
*
* Contributors various OpenCores participants
* Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
*
* This file is part of OpenRISC 1000 Architectural Simulator.
*
* 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 <http: www.gnu.org/licenses/>.
*/
/* ----------------------------------------------------------------------------
* Coding conventions
*
* A simple rising stack is provided starting at _stack and pointed to by
* r1. r1 points to the next free word. Only 32-bit registers may be pushed
* onto the stack.
*
* Local labels up to 49 are reserved for macros. Each is used only once in
* all macros. You can get in a serious mess if you get local label clashing
* in macros.
*
* Arguments to functions are passed in r3 through r8.
* r9 is the link (return address)
* r11 is for returning results
*
* Only r1 and r2 are preserved across function calls. It is up to the callee
* to save any other registers required.
* ------------------------------------------------------------------------- */
/* ----------------------------------------------------------------------------
* Test coverage
*
* The l.ff1 and l.fl1 should fine the first and last bits in a register
* respectively.
*
* Problems in this area were reported in Bug 1772. Having fixed the problem,
* this is (in good software engineering style), a regression test to go with
* the fix.
*
* This is not a comprehensive test of any instruction (yet).
*
* Of course what is really needed is a comprehensive instruction test...
* ------------------------------------------------------------------------- */
#include "inst-set-test.h"
/* ----------------------------------------------------------------------------
* A macro to carry out a test of find
*
* Arguments
* opc: The opcode
* op: First operand value
* res: Expected result
* str: Output string
* ------------------------------------------------------------------------- */
#define TEST_FIND(opc, op, res, str) \
LOAD_CONST (r4,33) /* Invalid result */ ;\
LOAD_CONST (r5,op) /* Load number to analyse */ ;\
opc r4,r5 ;\
CHECK_RES (str, r4, res)
.section .text
.global _start
_start:
/* ----------------------------------------------------------------------------
* Test of find first 1, l.ff1
* ------------------------------------------------------------------------- */
_ff1:
LOAD_STR (r3, "l.ff1\n")
l.jal _puts
l.nop
/* Try a range of candidates. */
TEST_FIND (l.ff1, 0x00000001, 1, "ff1 (0x00000001) = 1: ")
TEST_FIND (l.ff1, 0x80000000, 32, "ff1 (0x80000000) = 32: ")
TEST_FIND (l.ff1, 0x55555555, 1, "ff1 (0x55555555) = 1: ")
TEST_FIND (l.ff1, 0xaaaaaaaa, 2, "ff1 (0xaaaaaaaa) = 2: ")
TEST_FIND (l.ff1, 0x00018000, 16, "ff1 (0x00018000) = 16: ")
TEST_FIND (l.ff1, 0xc0000000, 31, "ff1 (0xc0000000) = 31: ")
TEST_FIND (l.ff1, 0x00000000, 0, "ff1 (0x00000000) = 0: ")
/* ----------------------------------------------------------------------------
* Test of find first 1, l.fl1
* ------------------------------------------------------------------------- */
_fl1:
LOAD_STR (r3, "l.fl1\n")
l.jal _puts
l.nop
/* Try a range of candidates. */
TEST_FIND (l.fl1, 0x00000001, 1, "fl1 (0x00000001) = 1: ")
TEST_FIND (l.fl1, 0x80000000, 32, "fl1 (0x80000000) = 32: ")
TEST_FIND (l.fl1, 0x55555555, 31, "fl1 (0x55555555) = 31: ")
TEST_FIND (l.fl1, 0xaaaaaaaa, 32, "fl1 (0xaaaaaaaa) = 32: ")
TEST_FIND (l.fl1, 0x00018000, 17, "fl1 (0x00018000) = 17: ")
TEST_FIND (l.fl1, 0xc0000000, 32, "fl1 (0xc0000000) = 32: ")
TEST_FIND (l.fl1, 0x00000000, 0, "fl1 (0x00000000) = 0: ")
/* ----------------------------------------------------------------------------
* All done
* ------------------------------------------------------------------------- */
_exit:
LOAD_STR (r3, "Test completed\n")
l.jal _puts
l.nop
TEST_EXIT
Go to most recent revision | Compare with Previous | Blame | View Log