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- /* Tests the jump 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(0x48000000);\n
- # output: report(0x00000005);\n
- # output: report(0x00000000);\n
- # output: report(0x00000000);\n
- # output: report(0x00000000);\n
- # output: \n
- # output: report(0x48000000);\n
- # output: report(0x00000009);\n
- # output: report(0x00000000);\n
- # output: report(0x00000001);\n
- # output: report(0x00000000);\n
- # output: \n
- # output: report(0x44000000);\n
- # output: report(0x00000005);\n
- # output: report(0x00000000);\n
- # output: report(0x00000000);\n
- # output: report(0x00000000);\n
- # output: \n
- # output: report(0x44000000);\n
- # output: report(0x00000009);\n
- # output: report(0x00000000);\n
- # output: report(0x00000000);\n
- # output: report(0x00000000);\n
- # output: \n
- # output: exit(0)\n
- #include "or1k-asm-test-helpers.h"
- /* Tests a jump instruction using a register destination.
- Checks whether the jump succeeds, or whether an exception is triggered
- (but not if the right exception was triggered yet).
- We manually construct the opcode, to allow us to force R9 into the
- destination field, to test exception handling. Usually the assembler
- would prevent this.
- Do not specify R31 as the register to use for the jump, as it's used
- internally. */
- .macro TEST_JUMP opcode_value dest_register_number alignment_offset
- REPORT_IMMEDIATE_TO_CONSOLE \opcode_value
- REPORT_IMMEDIATE_TO_CONSOLE \dest_register_number
- REPORT_IMMEDIATE_TO_CONSOLE \alignment_offset
- LOAD_IMMEDIATE r\dest_register_number, 51f + \alignment_offset
- /* Generate the jump opcode. */
- \@1$: OR1K_DELAYED_NOP \
- (.word ( \opcode_value | (\dest_register_number << 11) ))
- /* If the jump failed, we land here. */
- REPORT_IMMEDIATE_TO_CONSOLE 1
- OR1K_DELAYED_NOP (l.j 52f)
- /* If the jump succeeds, we land here. */
- 51: REPORT_IMMEDIATE_TO_CONSOLE 0
- 52: REPORT_EXCEPTION \@1$
- PRINT_NEWLINE_TO_CONSOLE
- .endm
- STANDARD_TEST_ENVIRONMENT
- .section .text
- start_tests:
- PUSH LINK_REGISTER_R9
- /* Test l.jalr (jump and link register) */
- TEST_JUMP 0x48000000, 5, 0
- /* TODO: The sim does not support unaligned memory access yet.
- TEST_JUMP 0x48000000, 5, 1
- TEST_JUMP 0x48000000, 5, 2
- TEST_JUMP 0x48000000, 5, 3
- */
- /* Test with link register as the destination. This is not
- allowed. */
- TEST_JUMP 0x48000000, 9, 0
- /* Test l.jr (jump register) */
- TEST_JUMP 0x44000000, 5, 0
- /* TODO: The sim does not support unaligned memory access yet.
- TEST_JUMP 0x44000000, 5, 1
- TEST_JUMP 0x44000000, 5, 2
- TEST_JUMP 0x44000000, 5, 3
- */
- /* Test with link register as the destination. */
- TEST_JUMP 0x44000000, 9, 0
- POP LINK_REGISTER_R9
- RETURN_TO_LINK_REGISTER_R9
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