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702d582e PG |
1 | /* Tests the jump 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(0x48000000);\n | |
20 | # output: report(0x00000005);\n | |
21 | # output: report(0x00000000);\n | |
22 | # output: report(0x00000000);\n | |
23 | # output: report(0x00000000);\n | |
24 | # output: \n | |
25 | # output: report(0x48000000);\n | |
26 | # output: report(0x00000009);\n | |
27 | # output: report(0x00000000);\n | |
28 | # output: report(0x00000001);\n | |
29 | # output: report(0x00000000);\n | |
30 | # output: \n | |
31 | # output: report(0x44000000);\n | |
32 | # output: report(0x00000005);\n | |
33 | # output: report(0x00000000);\n | |
34 | # output: report(0x00000000);\n | |
35 | # output: report(0x00000000);\n | |
36 | # output: \n | |
37 | # output: report(0x44000000);\n | |
38 | # output: report(0x00000009);\n | |
39 | # output: report(0x00000000);\n | |
40 | # output: report(0x00000000);\n | |
41 | # output: report(0x00000000);\n | |
42 | # output: \n | |
43 | # output: exit(0)\n | |
44 | ||
45 | #include "or1k-asm-test-helpers.h" | |
46 | ||
47 | /* Tests a jump instruction using a register destination. | |
48 | Checks whether the jump succeeds, or whether an exception is triggered | |
49 | (but not if the right exception was triggered yet). | |
50 | ||
51 | We manually construct the opcode, to allow us to force R9 into the | |
52 | destination field, to test exception handling. Usually the assembler | |
53 | would prevent this. | |
54 | ||
55 | Do not specify R31 as the register to use for the jump, as it's used | |
56 | internally. */ | |
57 | ||
58 | .macro TEST_JUMP opcode_value dest_register_number alignment_offset | |
59 | REPORT_IMMEDIATE_TO_CONSOLE \opcode_value | |
60 | REPORT_IMMEDIATE_TO_CONSOLE \dest_register_number | |
61 | REPORT_IMMEDIATE_TO_CONSOLE \alignment_offset | |
62 | LOAD_IMMEDIATE r\dest_register_number, 51f + \alignment_offset | |
63 | /* Generate the jump opcode. */ | |
64 | \@1$: OR1K_DELAYED_NOP \ | |
65 | (.word ( \opcode_value | (\dest_register_number << 11) )) | |
66 | /* If the jump failed, we land here. */ | |
67 | REPORT_IMMEDIATE_TO_CONSOLE 1 | |
68 | OR1K_DELAYED_NOP (l.j 52f) | |
69 | /* If the jump succeeds, we land here. */ | |
70 | 51: REPORT_IMMEDIATE_TO_CONSOLE 0 | |
71 | 52: REPORT_EXCEPTION \@1$ | |
72 | PRINT_NEWLINE_TO_CONSOLE | |
73 | .endm | |
74 | ||
75 | STANDARD_TEST_ENVIRONMENT | |
76 | ||
77 | .section .text | |
78 | start_tests: | |
79 | PUSH LINK_REGISTER_R9 | |
80 | ||
81 | /* Test l.jalr (jump and link register) */ | |
82 | TEST_JUMP 0x48000000, 5, 0 | |
83 | /* TODO: The sim does not support unaligned memory access yet. | |
84 | TEST_JUMP 0x48000000, 5, 1 | |
85 | TEST_JUMP 0x48000000, 5, 2 | |
86 | TEST_JUMP 0x48000000, 5, 3 | |
87 | */ | |
88 | ||
89 | /* Test with link register as the destination. This is not | |
90 | allowed. */ | |
91 | TEST_JUMP 0x48000000, 9, 0 | |
92 | ||
93 | /* Test l.jr (jump register) */ | |
94 | TEST_JUMP 0x44000000, 5, 0 | |
95 | /* TODO: The sim does not support unaligned memory access yet. | |
96 | TEST_JUMP 0x44000000, 5, 1 | |
97 | TEST_JUMP 0x44000000, 5, 2 | |
98 | TEST_JUMP 0x44000000, 5, 3 | |
99 | */ | |
100 | ||
101 | /* Test with link register as the destination. */ | |
102 | TEST_JUMP 0x44000000, 9, 0 | |
103 | ||
104 | POP LINK_REGISTER_R9 | |
105 | RETURN_TO_LINK_REGISTER_R9 |