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- /* Tests some basic fpu instructions.
- Copyright (C) 2017-2022 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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