* clarify when to set misa.C

add rules specifying when misa.C is set

Signed-off-by: Tariq Kurd <59061376+tariqkurd-repo@users.noreply.github.com>

* simplify the text

Signed-off-by: Tariq Kurd <59061376+tariqkurd-repo@users.noreply.github.com>

---------

Signed-off-by: Tariq Kurd <59061376+tariqkurd-repo@users.noreply.github.com>

Signed-off-by: Tariq Kurd <59061376+tariqkurd-repo@users.noreply.github.com>

1.0.4-2 add rule that C implies Zca, Zcf, Zcd

Add F/D to Zcf/d's depending relations

Co-authored-by: Nicolas Brunie <82109999+nibrunieAtSi5@users.noreply.github.com>
Signed-off-by: Tariq Kurd <59061376+tariqkurd-repo@users.noreply.github.com>

issue 221 - remove Zcf for RV64

https://github.com/riscv/riscv-code-size-reduction/issues/221 Zcf doesn't exist on RV64 as it contains no instructions

Revert "Add Sail code from Nambi to documentation"

Signed-off-by: Rafael Sene <rafael@riscv.org>

Remove unnecessary parameter from release 

Signed-off-by: Rafael Sene <rafael@riscv.org>

Signed-off-by: Rafael Sene <rafael@riscv.org>

Add Sail code from Nambi to documentation

None of the Sail code is actually functional, and some instructions were
skipped because the including it in the state it's in would be
pointless.

The Sail Asciidoc plugin is a Makefile variable for the time being until
the gem is published

Add missing build dependencies

Updating ruby version.

Signed-off-by: Bill Traynor <wmat@riscv.org>

Signed-off-by: Tariq Kurd <59061376+tariqkurd-repo@users.noreply.github.com>

V1.0.3-1 replace non idempotent handler text

v1.0.3-1 Replace sentence about the handler completing the sequence for non-idempotent memory handling

define Zce

* toolchain build: allow install/build/source prefixes to be overridden.
* toolchain/README.md: describe how to override INSTALLPREFIX and friends.

Fixes a typo in wavedrom TBJLVEC CSR 

Add proposed instruction formats

Update link to prebuilt GCC in README.md

typos, and clarification that Zcmp/Zcmb are for embedded CPUs

Replaced the link to the prebuilt GCC toolchain with the latest CORE-V build from Embecosm, as that one is tracking the version with Zc* support and is updated with new builds every week.

Signed-off-by: Torbjørn Viem Ness <tovine@users.noreply.github.com>

Fix PDF build

Added prepare-libgmp.sh to repo and fixed multilib-generator string