derek.holloway
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56 lines
1.3 KiB
ArmAsm
56 lines
1.3 KiB
ArmAsm
# Test that unsigned widening multiplication of 32-bit operands to produce a
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# 64-bit result is simulated correctly, when using 32-bit or F5series hardware
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# multiply functionality.
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# 0xffff fffc * 0x2 = 0x1 ffff fff8
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# mach: msp430
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# 32-bit hwmult register addresses
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.set MPY32L, 0x0140
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.set MPY32H, 0x0142
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.set OP2L, 0x0150
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.set OP2H, 0x0152
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.set RES0, 0x0154
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.set RES1, 0x0156
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.set RES2, 0x0158
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.set RES3, 0x015A
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# F5series hwmult register addresses
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.set MPY32L_F5, 0x04D0
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.set MPY32H_F5, 0x04D2
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.set OP2L_F5, 0x04E0
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.set OP2H_F5, 0x04E2
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.set RES0_F5, 0x04E4
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.set RES1_F5, 0x04E6
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.set RES2_F5, 0x04E8
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.set RES3_F5, 0x04EA
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.include "testutils.inc"
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start
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; Test 32bit hwmult
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MOV.W #2, &MPY32L ; Load operand 1 Low into multiplier
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MOV.W #0, &MPY32H ; Load operand 1 High into multiplier
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MOV.W #-4, &OP2L ; Load operand 2 Low into multiplier
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MOV.W #-1, &OP2H ; Load operand 2 High, trigger MPY
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CMP.W #-8, &RES0 { JNE .L5
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CMP.W #-1, &RES1 { JNE .L5
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CMP.W #1, &RES2 { JNE .L5
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CMP.W #0, &RES3 { JNE .L5
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; Test f5series hwmult
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MOV.W #2, &MPY32L_F5
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MOV.W #0, &MPY32H_F5
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MOV.W #-4, &OP2L_F5
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MOV.W #-1, &OP2H_F5
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CMP.W #-8, &RES0_F5 { JNE .L5
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CMP.W #-1, &RES1_F5 { JNE .L5
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CMP.W #1, &RES2_F5 { JNE .L5
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CMP.W #0, &RES3_F5 { JEQ .L6
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.L5:
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fail
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.L6:
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pass
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