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| author | Andrew Waterman <andrew@sifive.com> | 2019-09-06 15:08:09 -0700 |
|---|---|---|
| committer | Andrew Waterman <andrew@sifive.com> | 2019-09-06 15:08:09 -0700 |
| commit | 5e8bf5c789cc8a0deb909b2a65c66b7dec673940 (patch) | |
| tree | 7ddcabfe7cf6f603ccde8997396868e59d016c20 | |
| parent | fb2ea70991e94771ee9824a0a110a07d95186214 (diff) | |
| download | riscv-isa-manual-5e8bf5c789cc8a0deb909b2a65c66b7dec673940.zip riscv-isa-manual-5e8bf5c789cc8a0deb909b2a65c66b7dec673940.tar.gz riscv-isa-manual-5e8bf5c789cc8a0deb909b2a65c66b7dec673940.tar.bz2 | |
Remove outdated commentary
There's no reason for simple pedagogical implementations to trap
FENCE; they can probably just execute it as a NOP. (In situations
where that statement is false, the implementation isn't simple!)
I think the sentence was written with FENCE.I in mind, but since that
instruction has been moved to an extension, the sentence doesn't apply
in this context anymore.
| -rw-r--r-- | src/rv32.tex | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/rv32.tex b/src/rv32.tex index ba8e169..233109a 100644 --- a/src/rv32.tex +++ b/src/rv32.tex @@ -22,7 +22,7 @@ Subsets of the base integer ISA might be useful for pedagogical purposes, but the base has been defined such that there should be little incentive to subset a real hardware implementation beyond omitting support for misaligned memory accesses and treating all -SYSTEM and FENCE instructions as a single trap. +SYSTEM instructions as a single trap. \end{commentary} \begin{commentary} |