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https://opencores.org/ocsvn/amber/amber/trunk
[/] [amber/] [trunk/] [hw/] [tests/] [tst.S] - Diff between revs 83 and 87
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| Rev 83 |
Rev 87 |
| Line 59... |
Line 59... |
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// should not unset the V flag value
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// should not unset the V flag value
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tst r1, #0
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tst r1, #0
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// Check the V flag and Z flag are still set, the C flag
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// Check the V flag and Z flag are still set, the C flag
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// is clear, and the N flag gets cleared
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// is set to the carry out, and the N flag gets cleared
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bvc testfail
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bvc testfail
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bne testfail
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bne testfail
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bcs testfail
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bcc testfail
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bmi testfail
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bmi testfail
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// Test "Strange issue with r12 after TEQLSP"
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// Test "Strange issue with r12 after TEQLSP"
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mov r1, #0x1
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mov r1, #0x1
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mov r2, #0x1
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mov r2, #0x1
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| Line 94... |
Line 94... |
mov r1, #0x00800000
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mov r1, #0x00800000
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tst r1, #0x00ff0000
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tst r1, #0x00ff0000
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movcc r0, #0
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movcc r0, #0
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movcs r0, #1
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movcs r0, #1
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// test carry flag
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mov r0, #2
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mov r1, #1
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mov r3, #0x930
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cmp r0, #1
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mov r1, r3
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tst r1, #0x10
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bcc testfail
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bcc testfail
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bcc testfail
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// clears all four flags
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// Cant use p version of instrustion in 32-bit CPU because it writes the upper 4 bits of PC
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teqp pc, #0x00000000
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mov r0, #2
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mov r1, #1
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mov r3, #0x930
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// next instruction sets the carry flag
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// compare subtracts a 1 from the r0 value of 2
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// means 2's compliment of '1' gets added to '2', so the carry bit is set
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cmp r0, #1
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mov r1, r3
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// leaves carry flag at previous value
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tst r1, #0x10
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bcc testfail
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b testpass
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b testpass
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testfail:
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testfail:
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ldr r11, AdrTestStatus
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ldr r11, AdrTestStatus
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str r10, [r11]
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str r10, [r11]
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