Reality Signal Processor/CPU Core: Difference between revisions
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(→Usage) |
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lqv $v31, %lo(CONST),r0 # Load the constants |
lqv $v31, %lo(CONST),r0 # Load the constants |
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</syntaxhighlight>One example of using <code>lqv</code> and <code>lrv</code> in pair is to perform a fast memcpy from a possible misaligned address to an aligned destination buffer: |
</syntaxhighlight>One example of using <code>lqv</code> and <code>lrv</code> in pair is to perform a fast memcpy from a possible misaligned address to an aligned destination buffer:<syntaxhighlight lang="asm"> |
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# s0 is the pointer to source data in DMEM (possibly misaligned) |
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# s4 will point to the destination buffer in DMEM (aligned) |
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# t1 is the number of bytes to copy |
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li s4, %lo(BUFFER) |
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loop: |
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lqv $v00, 0x00,s0 |
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lrv $v00, 0x10,s0 |
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sqv $v00, 0,s4 |
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sub t1, 16 |
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add s0, 16 |
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bgtz t1, loop |
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add s4, 16 |
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</syntaxhighlight> |
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