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- /* Tests some basic fpu instructions.
- Copyright (C) 2019-2022 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(0x400921f9);\n
- # output: report(0xf01b866e);\n
- # output: report(0x4005bf09);\n
- # output: report(0x95aaf790);\n
- # output: report(0x00000000);\n
- # output: report(0x00001234);\n
- # output: \n
- # output: report(0x40b23400);\n
- # output: report(0x00000000);\n
- # output: report(0x40b23400);\n
- # output: report(0x00000000);\n
- # output: \n
- # output: report(0x40177081);\n
- # output: report(0xc2e33eff);\n
- # output: report(0x400921f9);\n
- # output: report(0xf01b866e);\n
- # output: \n
- # output: report(0x40211456);\n
- # output: report(0x587dfabf);\n
- # output: report(0x400921f9);\n
- # output: report(0xf01b866d);\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 .data
- .align 4
- .type pi, @object
- .size pi, 8
- anchor:
- pi:
- .double 3.14159
- .type e, @object
- .size e, 8
- e:
- .double 2.71828
- .type large, @object
- .size large, 8
- large:
- .long 0
- .long 0x1234
- .section .text
- start_tests:
- PUSH LINK_REGISTER_R9
- /* Test lf.itof.d int to double conversion. Setting up:
- * r11 pointer to data
- * r12,r13 pi as double
- * r14,r15 e as double
- * r16,r17 a long long
- */
- l.ori r11, r0, ha(anchor)
- l.addi r11, r11, lo(anchor)
- l.lwz r12, 0(r11)
- l.lwz r13, 4(r11)
- l.lwz r14, 8(r11)
- l.lwz r15, 12(r11)
- l.lwz r16, 16(r11)
- l.lwz r18, 20(r11)
- /* Output to ensure we loaded it correctly. */
- REPORT_REG_TO_CONSOLE r12
- REPORT_REG_TO_CONSOLE r13
- REPORT_REG_TO_CONSOLE r14
- REPORT_REG_TO_CONSOLE r15
- REPORT_REG_TO_CONSOLE r16
- REPORT_REG_TO_CONSOLE r18
- PRINT_NEWLINE_TO_CONSOLE
- /* Convert the big long to a double. */
- lf.itof.d r16,r18, r16,r18
- REPORT_REG_TO_CONSOLE r16
- REPORT_REG_TO_CONSOLE r18
- /* Convert the double back to a long, it should match before. */
- lf.ftoi.d r16,r18, r16,r18
- lf.itof.d r16,r18, r16,r18
- REPORT_REG_TO_CONSOLE r16
- REPORT_REG_TO_CONSOLE r18
- PRINT_NEWLINE_TO_CONSOLE
- /* Add and subtract some double values. */
- lf.add.d r12,r13, r12,r13, r14,r15
- REPORT_REG_TO_CONSOLE r12
- REPORT_REG_TO_CONSOLE r13
- lf.sub.d r12,r13, r12,r13, r14,r15
- REPORT_REG_TO_CONSOLE r12
- REPORT_REG_TO_CONSOLE r13
- PRINT_NEWLINE_TO_CONSOLE
- /* Multiply and divide double values. */
- lf.mul.d r12,r13, r12,r13, r14,r15
- REPORT_REG_TO_CONSOLE r12
- REPORT_REG_TO_CONSOLE r13
- lf.div.d r12,r13, r12,r13, r14,r15
- REPORT_REG_TO_CONSOLE r12
- REPORT_REG_TO_CONSOLE r13
- PRINT_NEWLINE_TO_CONSOLE
- /* Test lf.sfge.s set flag if r6 >= r10. */
- lf.sfge.d r12,r13, r14,r15
- 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.d r2,r3, r12,r13, r0,r1
- REPORT_EXCEPTION div0
- PRINT_NEWLINE_TO_CONSOLE
- POP LINK_REGISTER_R9
- RETURN_TO_LINK_REGISTER_R9
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