mirror of
https://github.com/garrettsworkshop/ROMBUSDriver.git
synced 2024-12-08 00:49:32 +00:00
74 lines
2.8 KiB
ArmAsm
74 lines
2.8 KiB
ArmAsm
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* spi calling convention
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* A0 - ROM register
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* A1 - readback address
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* A2 - RX buffer
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* A3 - TX buffer
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* A4 - clobbered
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* D0 - length (clobbered)
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* D1 - nops (clobbered)
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.global _spi_hal_rx16
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.include "spi_hal_common.s"
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.macro _spi_hal_rx16_iteration nops
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move.w (%A0), (%A2)+
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.rept \nops
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nop
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.endr
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.endm
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.align 16
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_spi_hal_rx16:
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spi_call _spi_hal_rx16_lookup, 15
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.align 16
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_spi_hal_rx16_lookup:
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_0, 2, 256
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_1, 4, 256
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_2, 6, 256
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_3, 8, 256
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_4, 10, 256
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_5, 12, 256
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_6, 14, 256
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_7, 16, 256
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_8, 18, 256
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_9, 20, 256
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_10, 22, 256
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_11, 24, 256
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_12, 26, 256
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_13, 28, 256
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_14, 30, 256
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lookup_table _spi_hal_rx16_lookup, _spi_hal_rx16_table_15, 32, 256
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.align 16
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_spi_hal_rx16_table_0: unroll_table _spi_hal_rx16_iteration, 0, 256
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.align 16
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_spi_hal_rx16_table_1: unroll_table _spi_hal_rx16_iteration, 1, 256
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.align 16
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_spi_hal_rx16_table_2: unroll_table _spi_hal_rx16_iteration, 2, 256
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.align 16
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_spi_hal_rx16_table_3: unroll_table _spi_hal_rx16_iteration, 3, 256
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.align 16
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_spi_hal_rx16_table_4: unroll_table _spi_hal_rx16_iteration, 4, 256
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.align 16
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_spi_hal_rx16_table_5: unroll_table _spi_hal_rx16_iteration, 5, 256
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.align 16
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_spi_hal_rx16_table_6: unroll_table _spi_hal_rx16_iteration, 6, 256
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.align 16
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_spi_hal_rx16_table_7: unroll_table _spi_hal_rx16_iteration, 7, 256
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.align 16
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_spi_hal_rx16_table_8: unroll_table _spi_hal_rx16_iteration, 8, 256
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.align 16
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_spi_hal_rx16_table_9: unroll_table _spi_hal_rx16_iteration, 9, 256
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.align 16
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_spi_hal_rx16_table_10: unroll_table _spi_hal_rx16_iteration, 10, 256
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.align 16
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_spi_hal_rx16_table_11: unroll_table _spi_hal_rx16_iteration, 11, 256
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.align 16
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_spi_hal_rx16_table_12: unroll_table _spi_hal_rx16_iteration, 12, 256
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.align 16
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_spi_hal_rx16_table_13: unroll_table _spi_hal_rx16_iteration, 13, 256
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.align 16
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_spi_hal_rx16_table_14: unroll_table _spi_hal_rx16_iteration, 14, 256
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.align 16
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_spi_hal_rx16_table_15: unroll_table _spi_hal_rx16_iteration, 15, 256
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