| /* Tests instruction l.sub. |
| |
| Copyright (C) 2017-2021 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(0x00000003);\n |
| # output: report(0x00000002);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x00000001);\n |
| # output: report(0x00000002);\n |
| # output: report(0xffffffff);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x00000003);\n |
| # output: report(0x00000002);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0xfffffffd);\n |
| # output: report(0xfffffffe);\n |
| # output: report(0xffffffff);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0xffffffff);\n |
| # output: report(0xfffffffe);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x7fffffff);\n |
| # output: report(0x3fffffff);\n |
| # output: report(0x40000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x40000000);\n |
| # output: report(0x40000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x3fffffff);\n |
| # output: report(0x40000000);\n |
| # output: report(0xffffffff);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x40000000);\n |
| # output: report(0x3fffffff);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x80000000);\n |
| # output: report(0x7fffffff);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x7fffffff);\n |
| # output: report(0x80000000);\n |
| # output: report(0xffffffff);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x80000000);\n |
| # output: report(0x7fffffff);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: \n |
| # output: report(0x3fffffff);\n |
| # output: report(0x40000000);\n |
| # output: report(0xffffffff);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x7fffffff);\n |
| # output: report(0x80000000);\n |
| # output: report(0xffffffff);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: \n |
| # output: exit(0)\n |
| |
| #include "or1k-asm-test-helpers.h" |
| |
| STANDARD_TEST_ENVIRONMENT |
| |
| .section .exception_vectors |
| |
| /* Range exception. */ |
| .org 0xb00 |
| |
| /* 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 0(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 l.sub */ |
| |
| /* Subtract two small positive numbers. Sets the carry, but never |
| the overflow if the result is negative. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x00000003, \ |
| 0x00000002 |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x00000001, \ |
| 0x00000002 |
| |
| /* Check carry in is ignored. */ |
| TEST_INST_FF_I32_I32 SPR_SR_CY, SPR_SR_OV, l.sub, 0x00000003, 0x00000002 |
| |
| /* Subtract two small negative numbers. Sets the carry flag if |
| the result is negative, but never the overflow flag. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0xfffffffd, \ |
| 0xfffffffe |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0xffffffff, \ |
| 0xfffffffe |
| |
| /* Subtract two quite large positive numbers. Should set neither |
| the overflow nor the carry flag. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x7fffffff, \ |
| 0x3fffffff |
| |
| /* Subtract two quite large negative numbers. Should set neither |
| the overflow nor the carry flag. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x40000000, \ |
| 0x40000000 |
| |
| /* Subtract two large positive numbers with a negative result. |
| Should set the carry, but not the overflow flag. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x3fffffff, \ |
| 0x40000000 |
| |
| /* Subtract two large negative numbers with a positive result. |
| Should set neither the carry nor the overflow flag. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x40000000, \ |
| 0x3fffffff |
| |
| /* Subtract a large positive from a large negative number. Should |
| set overflow but not the carry flag. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x80000000, \ |
| 0x7fffffff |
| |
| /* Subtract a large negative from a large positive number. Should |
| set both the overflow and carry flags. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x7fffffff, \ |
| 0x80000000 |
| |
| /* Check that range exceptions are triggered. */ |
| |
| SET_SPR_SR_FLAGS SPR_SR_OVE, r2, r3 |
| |
| /* Check that an overflow alone causes a RANGE Exception. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x80000000, \ |
| 0x7fffffff |
| |
| /* Check that a carry alone does not cause a RANGE Exception. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x3fffffff, \ |
| 0x40000000 |
| |
| /* Check that carry and overflow together cause an exception. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x7fffffff, \ |
| 0x80000000 |
| |
| CLEAR_SPR_SR_FLAGS SPR_SR_OVE, r2, r3 |
| |
| POP LINK_REGISTER_R9 |
| RETURN_TO_LINK_REGISTER_R9 |
