Luke Wren
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12851d3742
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Bring mtvec vectoring modes in line with spec: all exceptions go to mtvec, IRQs are optionally vectored away from it if mtvec LSB is set
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2021-05-30 19:52:46 +01:00 |
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Luke Wren
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cec5dc4e3b
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Remove old MCYCLE/MCYCLEH, implement MCOUNTINHIBIT fully, always decode tied-off HPM counters
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2021-05-30 19:20:53 +01:00 |
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Luke Wren
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565b76672a
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Make MVENDORID/MARCHID/MIMPID configurable
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2021-05-30 18:42:43 +01:00 |
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Luke Wren
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f23ec3f941
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Don't hold back instruction in M when an IRQ entry is stalled (but do for exception entry). Now pass add and lw checks in riscv-formal with depth 15, so getting somewhere
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2021-05-29 18:57:43 +01:00 |
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Luke Wren
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65075df0e5
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More work on traps, delaying IRQs which arrive whilst a load/store address phase is stalled to avoid deassertion on the bus
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2021-05-29 18:00:43 +01:00 |
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Luke Wren
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1b252d4bda
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Significant overhaul of trap handling. Exceptions now taken from stage 3 instead of stage 2
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2021-05-23 11:59:46 +01:00 |
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Luke Wren
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844fa8f97f
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Rename hazard5 -> hazard3
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2021-05-21 03:46:29 +01:00 |