derek.holloway
7502bf64a4
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216 lines
6.7 KiB
ArmAsm
216 lines
6.7 KiB
ArmAsm
/* Tests instruction l.sub.
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Copyright (C) 2017-2024 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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# mach: or1k
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# output: report(0x00000003);\n
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# output: report(0x00000002);\n
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# output: report(0x00000001);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: \n
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# output: report(0x00000001);\n
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# output: report(0x00000002);\n
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# output: report(0xffffffff);\n
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# output: report(0x00000001);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: \n
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# output: report(0x00000003);\n
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# output: report(0x00000002);\n
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# output: report(0x00000001);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: \n
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# output: report(0xfffffffd);\n
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# output: report(0xfffffffe);\n
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# output: report(0xffffffff);\n
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# output: report(0x00000001);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: \n
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# output: report(0xffffffff);\n
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# output: report(0xfffffffe);\n
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# output: report(0x00000001);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: \n
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# output: report(0x7fffffff);\n
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# output: report(0x3fffffff);\n
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# output: report(0x40000000);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: \n
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# output: report(0x40000000);\n
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# output: report(0x40000000);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: \n
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# output: report(0x3fffffff);\n
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# output: report(0x40000000);\n
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# output: report(0xffffffff);\n
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# output: report(0x00000001);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: \n
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# output: report(0x40000000);\n
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# output: report(0x3fffffff);\n
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# output: report(0x00000001);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: \n
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# output: report(0x80000000);\n
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# output: report(0x7fffffff);\n
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# output: report(0x00000001);\n
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# output: report(0x00000000);\n
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# output: report(0x00000001);\n
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# output: report(0x00000000);\n
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# output: \n
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# output: report(0x7fffffff);\n
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# output: report(0x80000000);\n
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# output: report(0xffffffff);\n
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# output: report(0x00000001);\n
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# output: report(0x00000001);\n
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# output: report(0x00000000);\n
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# output: \n
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# output: report(0x80000000);\n
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# output: report(0x7fffffff);\n
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# output: report(0x00000001);\n
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# output: report(0x00000000);\n
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# output: report(0x00000001);\n
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# output: report(0x00000001);\n
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# output: \n
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# output: report(0x3fffffff);\n
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# output: report(0x40000000);\n
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# output: report(0xffffffff);\n
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# output: report(0x00000001);\n
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# output: report(0x00000000);\n
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# output: report(0x00000000);\n
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# output: \n
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# output: report(0x7fffffff);\n
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# output: report(0x80000000);\n
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# output: report(0xffffffff);\n
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# output: report(0x00000001);\n
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# output: report(0x00000001);\n
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# output: report(0x00000001);\n
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# output: \n
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# output: exit(0)\n
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#include "or1k-asm-test-helpers.h"
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STANDARD_TEST_ENVIRONMENT
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.section .exception_vectors
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/* Range exception. */
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.org 0xb00
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/* The handling is a bit dubious at present. We just patch the
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instruction with l.nop and restart. This will go wrong in branch
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delay slots. But we don't have those in this test. */
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l.addi r1, r1, -EXCEPTION_STACK_SKIP_SIZE
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PUSH r2
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PUSH r3
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/* Save the address of the instruction that caused the problem. */
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MOVE_FROM_SPR r2, SPR_EPCR_BASE
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LOAD_IMMEDIATE r3, 0x15000000 /* Opcode for l.nop */
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l.sw 0(r2), r3
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POP r3
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POP r2
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l.addi r1, r1, EXCEPTION_STACK_SKIP_SIZE
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l.rfe
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.section .text
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start_tests:
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PUSH LINK_REGISTER_R9
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/* Test l.sub */
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/* Subtract two small positive numbers. Sets the carry, but never
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the overflow if the result is negative. */
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TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x00000003, \
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0x00000002
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TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x00000001, \
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0x00000002
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/* Check carry in is ignored. */
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TEST_INST_FF_I32_I32 SPR_SR_CY, SPR_SR_OV, l.sub, 0x00000003, 0x00000002
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/* Subtract two small negative numbers. Sets the carry flag if
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the result is negative, but never the overflow flag. */
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TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0xfffffffd, \
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0xfffffffe
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TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0xffffffff, \
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0xfffffffe
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/* Subtract two quite large positive numbers. Should set neither
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the overflow nor the carry flag. */
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TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x7fffffff, \
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0x3fffffff
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/* Subtract two quite large negative numbers. Should set neither
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the overflow nor the carry flag. */
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TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x40000000, \
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0x40000000
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/* Subtract two large positive numbers with a negative result.
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Should set the carry, but not the overflow flag. */
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TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x3fffffff, \
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0x40000000
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/* Subtract two large negative numbers with a positive result.
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Should set neither the carry nor the overflow flag. */
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TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x40000000, \
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0x3fffffff
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/* Subtract a large positive from a large negative number. Should
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set overflow but not the carry flag. */
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TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x80000000, \
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0x7fffffff
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/* Subtract a large negative from a large positive number. Should
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set both the overflow and carry flags. */
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TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x7fffffff, \
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0x80000000
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/* Check that range exceptions are triggered. */
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SET_SPR_SR_FLAGS SPR_SR_OVE, r2, r3
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/* Check that an overflow alone causes a RANGE Exception. */
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TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x80000000, \
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0x7fffffff
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/* Check that a carry alone does not cause a RANGE Exception. */
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TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x3fffffff, \
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0x40000000
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/* Check that carry and overflow together cause an exception. */
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TEST_INST_FF_I32_I32 0, SPR_SR_CY | SPR_SR_OV, l.sub, 0x7fffffff, \
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0x80000000
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CLEAR_SPR_SR_FLAGS SPR_SR_OVE, r2, r3
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POP LINK_REGISTER_R9
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RETURN_TO_LINK_REGISTER_R9
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