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26 Prevent exceptions from being taken while stalling

Jumping to an exception handler while stalling and waiting for a load/store
instruction to finish can cause undefined results from the load/store
instruction. This actually fixes the issue mentioned in revision r20.
skordal 3314d 14h /potato/
25 Add placeholder cache modules and a wishbone arbiter skordal 3316d 19h /potato/
24 Remove unused STRINGIFY macros skordal 3317d 08h /potato/
23 Create branch to use for implementing a cache skordal 3317d 08h /potato/
22 Fix the potato_get_badvaddr() macro skordal 3317d 08h /potato/
21 Upgrade the example design to use a 60 MHz system clock skordal 3317d 09h /potato/
20 Fix SHA256 benchmark crash by storing all registers on exception handler entry

This problem will disappear when the processor is updated to conform to the
new supervisor specification, which will allow us to use a compiler that
conforms to the new "official" ABI.
skordal 3317d 09h /potato/
19 SHA256 benchmark: allow compiler to inline at will skordal 3317d 09h /potato/
18 instr_misalign_check: add do_jump to sensitivity list skordal 3319d 09h /potato/
17 Improve detection of unaligned instructions skordal 3323d 16h /potato/
16 Correct grammar in source code comment skordal 3323d 16h /potato/
15 SHA256 benchmark: fix Makefile syntax error skordal 3330d 08h /potato/
14 Improve detection of invalid instructions skordal 3330d 09h /potato/
13 Add SHA256 benchmark code skordal 3330d 14h /potato/
12 Update example design with correct bug-report URL and testbenches skordal 3330d 16h /potato/
11 Correct FIFO file header skordal 3330d 16h /potato/
10 Add missing FIFO module skordal 3335d 10h /potato/
9 Remove dependency on a non-existent target in the Makefile skordal 3335d 10h /potato/
8 Clarify instruction ROM naming in the example design README skordal 3342d 12h /potato/
7 Add test design for the Nexys 4 board from Digilent skordal 3342d 13h /potato/
6 Add ISA tests skordal 3342d 13h /potato/
5 Update the README, remove .md extension skordal 3344d 18h /potato/
4 Add license skordal 3344d 18h /potato/
3 Fix bug reporting URL skordal 3344d 19h /potato/
2 Initial commit skordal 3344d 21h /potato/
1 The project and the structure was created root 3355d 23h /potato/

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