We want people to get an error when compiling the tracer with Verilator:
this file should not be used with Verilator. An error is better than
silently getting the wrong result.
This file doesn't contain defines any more, but a normal SV package.
The diff is best viewed without whitespace changes, as the reindents
cause a lof of diff noise.
Fixeslowrisc/ibex#173
This commit cleans up the LSU and fixes two bugs:
1. If a misalgned transaction creates an error during the first
part of the transaction, the second part is not pushed out and
the transaction is aborted. Previously, the LSU tried to output
also the second part but did not adhere to the defined
protocol.
2. Misaligned operations are again working correctly. Previously,
the generation of the byte enable and the alignment of read
data was broken as these operations rely on the updated
address from the AGU to have the same alignment as the
original address.
This partially resolves#121.
The `nop` instruction ( `32'h00_00_00_13` ) cannot be distinguished from masked `addi` ( `17'b?, 3'b000, 5'b?, 7'h13` ) in `unique casex` statement. The other way around is not a problem, as `addi` cannot have both registers as 0x0.
This can be also fixed by replacing `unique casex` with `priority casex`. However, in my opinion, it is not a good solution as it may hide future bugs like this.
- Move ibex_tracer_defines.sv and ibex_defines.sv out of the 'include'
directory, since these files are not actually included.
- Remove ibex_config.sv, it's mostly unused code. The remaining defines,
SYNTHESIS, ASIC_SYNTHESIS, TRACE_EXECUTION, and CHECK_MISALIGNED should
be set through command-line flags to the simulation/synthesis tools.
Initial version by Nils Gräf.
This commit switches the ibex core from a custom debug system to an
execution-based, standard RISC-V debug system. The port is based on a
port done for the RI5CY core.
This change has been informed by advice from the lowRISC legal
committee.
The Solderpad 0.51 license states "the Licensor permits any Work
licensed under this License, at the option of the Licensee, to be
treated as licensed under the Apache License Version 2.0". We use this
freedom to convert license markings to Apache 2.0. This commit ensures
that we retain all authorship and copyright attribution information.
