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/* Tests some basic fpu instructions.
Copyright (C) 2017-2021 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 <http://www.gnu.org/licenses/>. */
# mach: or1k
# output: report(0x00007ab7);\n
# output: report(0xffffd8f0);\n
# output: report(0x46f56e00);\n
# output: report(0xc61c4000);\n
# output: report(0x00007ab7);\n
# output: report(0xffffd8f0);\n
# output: \n
# output: report(0xc0490e56);\n
# output: report(0xfffffffd);\n
# output: \n
# output: report(0x4e6b4bbb);\n
# output: \n
# output: report(0xbdc0be40);\n
# output: \n
# output: report(0x00000001);\n
# output: \n
# output: WARNING: ignoring fpu error caught in fast mode.\n
# output: report(0x00000000);\n
# output: \n
# output: exit(0)\n
#include "or1k-asm-test-helpers.h"
STANDARD_TEST_ENVIRONMENT
.section .exception_vectors
/* Floating point exception. */
.org 0xd00
/* The handling is a bit dubious at present. We just patch the
instruction with l.nop and restart. This will go wrong in branch
delay slots. But we don't have those in this test. */
l.addi r1, r1, -EXCEPTION_STACK_SKIP_SIZE
PUSH r2
PUSH r3
/* Save the address of the instruction that caused the problem. */
MOVE_FROM_SPR r2, SPR_EPCR_BASE
LOAD_IMMEDIATE r3, 0x15000000 /* Opcode for l.nop */
l.sw -4(r2), r3
POP r3
POP r2
l.addi r1, r1, EXCEPTION_STACK_SKIP_SIZE
l.rfe
.section .text
start_tests:
PUSH LINK_REGISTER_R9
/* Test lf.itof.s int to float conversion. Setting up:
* r10 31415.0f
* r12 -10000.0f
*/
l.ori r11, r0, 31415
l.ori r13, r0, -10000
l.movhi r15, 0xffff
l.or r13, r13, r15
REPORT_REG_TO_CONSOLE r11
REPORT_REG_TO_CONSOLE r13
lf.itof.s r10, r11
lf.itof.s r12, r13
REPORT_REG_TO_CONSOLE r10
REPORT_REG_TO_CONSOLE r12
/* Test lf.ftoi.s float to int conversion. */
lf.ftoi.s r11, r10
lf.ftoi.s r13, r12
REPORT_REG_TO_CONSOLE r11
REPORT_REG_TO_CONSOLE r13
PRINT_NEWLINE_TO_CONSOLE
/* Test lf.div.s divide 31415 by -1000 to get -pi. Setting up:
* r8 -3.1415f
*/
lf.div.s r8, r10, r12
REPORT_REG_TO_CONSOLE r8
lf.ftoi.s r11, r8
REPORT_REG_TO_CONSOLE r11
PRINT_NEWLINE_TO_CONSOLE
/* Test lf.mul.s multiply -pi x -10000 x 31415. Setting up:
* r6 986902225
*/
lf.mul.s r6, r8, r12
lf.mul.s r6, r6, r10
REPORT_REG_TO_CONSOLE r6
PRINT_NEWLINE_TO_CONSOLE
/* Test lf.rem.s remainder of 986902225 / -pi. */
lf.rem.s r2, r6, r8
REPORT_REG_TO_CONSOLE r2
PRINT_NEWLINE_TO_CONSOLE
/* Test lf.sfge.s set flag if r6 >= r10. */
lf.sfge.s r6, r10
MOVE_FROM_SPR r2, SPR_SR
REPORT_BIT_TO_CONSOLE r2, SPR_SR_F
PRINT_NEWLINE_TO_CONSOLE
/* Test raising an exception by dividing by 0. */
MOVE_FROM_SPR r2, SPR_FPCSR
l.ori r2, r2, 0x1
MOVE_TO_SPR SPR_FPCSR, r2
div0: lf.div.s r2, r8, r0
REPORT_EXCEPTION div0
PRINT_NEWLINE_TO_CONSOLE
POP LINK_REGISTER_R9
RETURN_TO_LINK_REGISTER_R9
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