| /* Tests instructions l.add, l.addc, l.addi and l.addic. |
| |
| 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(0x00000001);\n |
| # output: report(0x00000002);\n |
| # output: report(0x00000003);\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(0x00000003);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0xffffffff);\n |
| # output: report(0xfffffffe);\n |
| # output: report(0xfffffffd);\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(0x7fffffff);\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(0x80000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0xc0000000);\n |
| # output: report(0xc0000000);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0xbfffffff);\n |
| # output: report(0xbfffffff);\n |
| # output: report(0x7ffffffe);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x40000000);\n |
| # output: report(0x40000000);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: \n |
| # output: report(0xffffffff);\n |
| # output: report(0xfffffffe);\n |
| # output: report(0xfffffffd);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0xbfffffff);\n |
| # output: report(0xbfffffff);\n |
| # output: report(0x7ffffffe);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: \n |
| # output: report(0x00000001);\n |
| # output: report(0x00000002);\n |
| # output: report(0x00000003);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0xffffffff);\n |
| # output: report(0xfffffffe);\n |
| # output: report(0xfffffffd);\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(0x7fffffff);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x40000000);\n |
| # output: report(0x3fffffff);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x40000000);\n |
| # output: report(0x40000000);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0xffffffff);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x00000000);\n |
| # output: report(0xffffffff);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0xc0000000);\n |
| # output: report(0xc0000000);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0xc0000000);\n |
| # output: report(0xbfffffff);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0xbfffffff);\n |
| # output: report(0xbfffffff);\n |
| # output: report(0x7ffffffe);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x40000000);\n |
| # output: report(0x40000000);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: \n |
| # output: report(0x40000000);\n |
| # output: report(0x3fffffff);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: \n |
| # output: report(0xffffffff);\n |
| # output: report(0xfffffffe);\n |
| # output: report(0xfffffffd);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x00000000);\n |
| # output: report(0xffffffff);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0xbfffffff);\n |
| # output: report(0xbfffffff);\n |
| # output: report(0x7ffffffe);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: \n |
| # output: report(0x00000001);\n |
| # output: report(0x00000002);\n |
| # output: report(0x00000003);\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(0x00000003);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0xffffffff);\n |
| # output: report(0x0000fffe);\n |
| # output: report(0xfffffffd);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x7fff8000);\n |
| # output: report(0x00007fff);\n |
| # output: report(0x7fffffff);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x7fffc000);\n |
| # output: report(0x00004000);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x80008000);\n |
| # output: report(0x00008000);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x80007fff);\n |
| # output: report(0x00008000);\n |
| # output: report(0x7fffffff);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x7fffc000);\n |
| # output: report(0x00004000);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: \n |
| # output: report(0xffffffff);\n |
| # output: report(0x0000fffe);\n |
| # output: report(0xfffffffd);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x80007fff);\n |
| # output: report(0x00008000);\n |
| # output: report(0x7fffffff);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: \n |
| # output: report(0x00000001);\n |
| # output: report(0x00000002);\n |
| # output: report(0x00000003);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0xffffffff);\n |
| # output: report(0x0000fffe);\n |
| # output: report(0xfffffffd);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x7fff8000);\n |
| # output: report(0x00007fff);\n |
| # output: report(0x7fffffff);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x7fff8000);\n |
| # output: report(0x00007fff);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x7fffc000);\n |
| # output: report(0x00004000);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0xffffffff);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x00000000);\n |
| # output: report(0x0000ffff);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x80008000);\n |
| # output: report(0x00008000);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x80007fff);\n |
| # output: report(0x00008000);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x80007fff);\n |
| # output: report(0x00008000);\n |
| # output: report(0x7fffffff);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x7fffc000);\n |
| # output: report(0x00004000);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: \n |
| # output: report(0x7fffc000);\n |
| # output: report(0x00003fff);\n |
| # output: report(0x80000000);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000001);\n |
| # output: \n |
| # output: report(0xffffffff);\n |
| # output: report(0x0000fffe);\n |
| # output: report(0xfffffffd);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x00000000);\n |
| # output: report(0x0000ffff);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000001);\n |
| # output: report(0x00000000);\n |
| # output: report(0x00000000);\n |
| # output: \n |
| # output: report(0x80007fff);\n |
| # output: report(0x00008000);\n |
| # output: report(0x7fffffff);\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.add */ |
| |
| /* Add two small positive numbers */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.add, 1, 2 |
| |
| /* The carry flag should be ignored. */ |
| TEST_INST_FF_I32_I32 SPR_SR_CY, SPR_SR_OV, l.add, 1, 2 |
| |
| /* Add two small negative numbers, which should set the carry flag |
| but not the overflow flag. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.add, -1, -2 |
| |
| /* Add 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.add, 0x40000000, \ |
| 0x3fffffff |
| |
| /* Add two large positive numbers. Should set the overflow, but |
| not the carry flag. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.add, 0x40000000, \ |
| 0x40000000 |
| |
| /* Add two quite large negative numbers. Should set the carry, but |
| not the overflow flag. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.add, -1073741824, \ |
| -1073741824 /* -1073741824 = 0xC0000000 */ |
| |
| /* Add two large negative numbers. Should set both the overflow |
| and carry flags. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.add, 0xbfffffff, \ |
| 0xbfffffff |
| |
| /* 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.add, 0x40000000, \ |
| 0x40000000 |
| |
| /* Check that a carry alone does not cause a RANGE Exception. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.add, 0xffffffff, \ |
| 0xfffffffe |
| |
| /* Check that carry and overflow together cause an exception. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.add, 0xbfffffff, \ |
| 0xbfffffff |
| |
| CLEAR_SPR_SR_FLAGS SPR_SR_OVE, r2, r3 |
| |
| /* Test l.addc */ |
| |
| /* Add two small positive numbers */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.addc, 1, 2 |
| |
| /* Add two small negative numbers. Sets the carry flag but not the |
| overflow flag. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.addc, -1, -2 |
| |
| /* Add 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.addc, 0x40000000, \ |
| 0x3fffffff |
| |
| /* Add two quite large positive numbers with a carry in. Should |
| set the overflow but not the carry flag. */ |
| TEST_INST_FF_I32_I32 SPR_SR_CY, SPR_SR_OV, l.addc, 0x40000000, \ |
| 0x3fffffff |
| |
| /* Add two large positive numbers. Should set the overflow, but |
| not the carry flag. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.addc, 0x40000000, \ |
| 0x40000000 |
| |
| /* Add the largest unsigned value to zero with a carry. This |
| potentially can break a simplistic test for carry that does not |
| consider the carry flag properly. Do it both ways around. */ |
| TEST_INST_FF_I32_I32 SPR_SR_CY, SPR_SR_OV, l.addc, -1, 0 |
| TEST_INST_FF_I32_I32 SPR_SR_CY, SPR_SR_OV, l.addc, 0, -1 |
| |
| /* Add two quite large negative numbers. Should set the carry, but |
| not the overflow flag. Here -1073741824 is 0xC0000000. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.addc, -1073741824, \ |
| -1073741824 |
| |
| /* Add two quite large negative numbers that would overflow, with a |
| carry that just avoids the overflow. Should set the carry, but |
| not the overflow flag. Here -1073741824 is 0xC0000000 and |
| -1073741825 is 0xBFFFFFFF. */ |
| TEST_INST_FF_I32_I32 SPR_SR_CY, SPR_SR_OV, l.addc, -1073741824, \ |
| -1073741825 |
| |
| /* Add two large negative numbers. Should set both the overflow |
| and carry flags. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.addc, -1073741825, \ |
| -1073741825 |
| |
| /* Check that range exceptions are triggered. */ |
| |
| SET_SPR_SR_FLAGS SPR_SR_OVE, r2, r3 |
| |
| /* Check that an overflow alone causes a RANGE Exception, even when |
| it is the carry that causes the overflow. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.addc, 0x40000000, \ |
| 0x40000000 |
| TEST_INST_FF_I32_I32 SPR_SR_CY, SPR_SR_OV, l.addc, 0x40000000, \ |
| 0x3fffffff |
| |
| /* Check that a carry alone does not cause a RANGE Exception, even |
| when it is the carry that causes the overflow. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.addc, 0xffffffff, \ |
| 0xfffffffe |
| TEST_INST_FF_I32_I32 SPR_SR_CY, SPR_SR_OV, l.addc, 0x00000000, \ |
| 0xffffffff |
| |
| /* Check that carry and overflow together cause an exception. */ |
| TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.addc, 0xbfffffff, \ |
| 0xbfffffff |
| |
| CLEAR_SPR_SR_FLAGS SPR_SR_OVE, r2, r3 |
| |
| /* Test l.addi */ |
| |
| /* Add two small positive numbers */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addi, 1, 2 |
| |
| /* Check carry in is ignored. */ |
| TEST_INST_FF_I32_I16 SPR_SR_CY, SPR_SR_OV, l.addi, 1, 2 |
| |
| /* Add two small negative numbers. Sets the carry flag but not the |
| overflow flag. */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addi, 0xffffffff, \ |
| 0xfffe |
| |
| /* Add two quite large positive numbers. Should set neither the |
| overflow nor the carry flag. */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addi, 0x7fff8000, \ |
| 0x7fff |
| |
| /* Add two large positive numbers. Should set the overflow, but |
| not the carry flag. */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addi, 0x7fffc000, \ |
| 0x4000 |
| |
| /* Add two quite large negative numbers. Should set the carry, but |
| not the overflow flag. */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addi, 0x80008000, \ |
| 0x8000 |
| |
| /* Add two large negative numbers. Should set both the overflow |
| and carry flags. */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addi, 0x80007fff, \ |
| 0x8000 |
| |
| /* 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_I16 0, SPR_SR_CY | SPR_SR_OV, l.addi, 0x7fffc000, \ |
| 0x4000 |
| |
| /* Check that a carry alone does not cause a RANGE Exception. */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addi, 0xffffffff, \ |
| 0xfffe |
| |
| /* Check that carry and overflow together cause an exception. */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addi, 0x80007fff, \ |
| 0x8000 |
| |
| CLEAR_SPR_SR_FLAGS SPR_SR_OVE, r2, r3 |
| |
| /* Test l.addi */ |
| |
| /* Add two small positive numbers */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addic, 1, 2 |
| |
| /* Add two small negative numbers. Sets the carry flag but not the |
| overflow flag. */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addic, 0xffffffff, \ |
| 0xfffe |
| |
| /* Add two quite large positive numbers. Should set neither the |
| overflow nor the carry flag. */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addic, 0x7fff8000, \ |
| 0x7fff |
| |
| /* Add two quite large positive numbers with a carry in. Should |
| set the overflow but not the carry flag. */ |
| TEST_INST_FF_I32_I16 SPR_SR_CY, SPR_SR_OV, l.addic, 0x7fff8000, 0x7fff |
| |
| /* Add two large positive numbers. Should set the overflow, but |
| not the carry flag. */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addic, 0x7fffc000, \ |
| 0x4000 |
| |
| /* Add the largest unsigned value to zero with a carry. This |
| potentially can break a simplistic test for carry that does not |
| consider the carry flag properly. Do it both ways around. */ |
| TEST_INST_FF_I32_I16 SPR_SR_CY, SPR_SR_OV, l.addic, 0xffffffff, 0x0000 |
| TEST_INST_FF_I32_I16 SPR_SR_CY, SPR_SR_OV, l.addic, 0x00000000, 0xffff |
| |
| /* Add two quite large negative numbers. Should set the carry, but |
| not the overflow flag. */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addic, 0x80008000, \ |
| 0x8000 |
| |
| /* Add two quite large negative numbers that would overflow, with a |
| carry that just avoids the overflow. This should set the carry, |
| but not the overflow flag. */ |
| TEST_INST_FF_I32_I16 SPR_SR_CY, SPR_SR_OV, l.addic, 0x80007fff, 0x8000 |
| |
| /* Add two large negative numbers. Should set both the overflow |
| and carry flags. */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addic, 0x80007fff, \ |
| 0x8000 |
| |
| /* Check that range exceptions are triggered. */ |
| |
| SET_SPR_SR_FLAGS SPR_SR_OVE, r2, r3 |
| |
| /* Check that an overflow alone causes a RANGE Exception, even when |
| it is the carry that causes the overflow. */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addic, 0x7fffc000, \ |
| 0x4000 |
| TEST_INST_FF_I32_I16 SPR_SR_CY, SPR_SR_OV, l.addic, 0x7fffc000, 0x3fff |
| |
| /* Check that a carry alone does not cause a RANGE Exception, even |
| when it is the carry that causes the overflow. */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addic, 0xffffffff, \ |
| 0xfffe |
| TEST_INST_FF_I32_I16 SPR_SR_CY, SPR_SR_OV, l.addic, 0x00000000, 0xffff |
| |
| /* Check that carry and overflow together cause an exception. */ |
| TEST_INST_FF_I32_I16 0, SPR_SR_CY | SPR_SR_OV, l.addic, 0x80007fff, \ |
| 0x8000 |
| |
| CLEAR_SPR_SR_FLAGS SPR_SR_OVE, r2, r3 |
| |
| POP LINK_REGISTER_R9 |
| RETURN_TO_LINK_REGISTER_R9 |
