Commit | Line | Data |
---|---|---|
702d582e PG |
1 | /* Tests some basic fpu instructions. |
2 | ||
e2882c85 | 3 | Copyright (C) 2017-2018 Free Software Foundation, Inc. |
702d582e PG |
4 | |
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 3 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
17 | ||
18 | # mach: or1k | |
19 | # output: report(0x00007ab7);\n | |
20 | # output: report(0xffffd8f0);\n | |
21 | # output: report(0x46f56e00);\n | |
22 | # output: report(0xc61c4000);\n | |
23 | # output: report(0x00007ab7);\n | |
24 | # output: report(0xffffd8f0);\n | |
25 | # output: \n | |
26 | # output: report(0xc0490e56);\n | |
27 | # output: report(0xfffffffd);\n | |
28 | # output: \n | |
29 | # output: report(0x4e6b4bbb);\n | |
30 | # output: \n | |
31 | # output: report(0xbdc0be40);\n | |
32 | # output: \n | |
33 | # output: report(0x00000001);\n | |
34 | # output: \n | |
35 | # output: WARNING: ignoring fpu error caught in fast mode.\n | |
36 | # output: report(0x00000000);\n | |
37 | # output: \n | |
38 | # output: exit(0)\n | |
39 | ||
40 | #include "or1k-asm-test-helpers.h" | |
41 | ||
42 | STANDARD_TEST_ENVIRONMENT | |
43 | ||
44 | .section .exception_vectors | |
45 | ||
46 | /* Floating point exception. */ | |
47 | .org 0xd00 | |
48 | ||
49 | /* The handling is a bit dubious at present. We just patch the | |
50 | instruction with l.nop and restart. This will go wrong in branch | |
51 | delay slots. But we don't have those in this test. */ | |
52 | l.addi r1, r1, -EXCEPTION_STACK_SKIP_SIZE | |
53 | PUSH r2 | |
54 | PUSH r3 | |
55 | /* Save the address of the instruction that caused the problem. */ | |
56 | MOVE_FROM_SPR r2, SPR_EPCR_BASE | |
57 | LOAD_IMMEDIATE r3, 0x15000000 /* Opcode for l.nop */ | |
58 | l.sw -4(r2), r3 | |
59 | POP r3 | |
60 | POP r2 | |
61 | l.addi r1, r1, EXCEPTION_STACK_SKIP_SIZE | |
62 | l.rfe | |
63 | ||
64 | .section .text | |
65 | start_tests: | |
66 | PUSH LINK_REGISTER_R9 | |
67 | ||
68 | /* Test lf.itof.s int to float conversion. Setting up: | |
69 | * r10 31415.0f | |
70 | * r12 -10000.0f | |
71 | */ | |
72 | l.ori r11, r0, 31415 | |
73 | l.ori r13, r0, -10000 | |
74 | l.movhi r15, 0xffff | |
75 | l.or r13, r13, r15 | |
76 | ||
77 | REPORT_REG_TO_CONSOLE r11 | |
78 | REPORT_REG_TO_CONSOLE r13 | |
79 | lf.itof.s r10, r11 | |
80 | lf.itof.s r12, r13 | |
81 | REPORT_REG_TO_CONSOLE r10 | |
82 | REPORT_REG_TO_CONSOLE r12 | |
83 | ||
84 | /* Test lf.ftoi.s float to int conversion. */ | |
85 | lf.ftoi.s r11, r10 | |
86 | lf.ftoi.s r13, r12 | |
87 | REPORT_REG_TO_CONSOLE r11 | |
88 | REPORT_REG_TO_CONSOLE r13 | |
89 | PRINT_NEWLINE_TO_CONSOLE | |
90 | ||
91 | /* Test lf.div.s divide 31415 by -1000 to get -pi. Setting up: | |
92 | * r8 -3.1415f | |
93 | */ | |
94 | lf.div.s r8, r10, r12 | |
95 | REPORT_REG_TO_CONSOLE r8 | |
96 | ||
97 | lf.ftoi.s r11, r8 | |
98 | REPORT_REG_TO_CONSOLE r11 | |
99 | PRINT_NEWLINE_TO_CONSOLE | |
100 | ||
101 | /* Test lf.mul.s multiply -pi x -10000 x 31415. Setting up: | |
102 | * r6 986902225 | |
103 | */ | |
104 | lf.mul.s r6, r8, r12 | |
105 | lf.mul.s r6, r6, r10 | |
106 | REPORT_REG_TO_CONSOLE r6 | |
107 | PRINT_NEWLINE_TO_CONSOLE | |
108 | ||
109 | /* Test lf.rem.s remainder of 986902225 / -pi. */ | |
110 | lf.rem.s r2, r6, r8 | |
111 | REPORT_REG_TO_CONSOLE r2 | |
112 | PRINT_NEWLINE_TO_CONSOLE | |
113 | ||
114 | /* Test lf.sfge.s set flag if r6 >= r10. */ | |
115 | lf.sfge.s r6, r10 | |
116 | MOVE_FROM_SPR r2, SPR_SR | |
117 | REPORT_BIT_TO_CONSOLE r2, SPR_SR_F | |
118 | PRINT_NEWLINE_TO_CONSOLE | |
119 | ||
120 | /* Test raising an exception by dividing by 0. */ | |
121 | MOVE_FROM_SPR r2, SPR_FPCSR | |
122 | l.ori r2, r2, 0x1 | |
123 | MOVE_TO_SPR SPR_FPCSR, r2 | |
124 | div0: lf.div.s r2, r8, r0 | |
125 | REPORT_EXCEPTION div0 | |
126 | PRINT_NEWLINE_TO_CONSOLE | |
127 | ||
128 | POP LINK_REGISTER_R9 | |
129 | RETURN_TO_LINK_REGISTER_R9 |