From: Richard Henderson <richard.henderson@linaro.org>
To: frank.chang@sifive.com, qemu-devel@nongnu.org, qemu-riscv@nongnu.org
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>,
Kito Cheng <kito.cheng@sifive.com>,
Alistair Francis <Alistair.Francis@wdc.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Sagar Karandikar <sagark@eecs.berkeley.edu>
Subject: Re: [RFC 02/15] target/riscv: rvb: count leading/trailing zeros
Date: Thu, 19 Nov 2020 11:48:20 -0800 [thread overview]
Message-ID: <72fcab50-3dfe-e970-9dc4-098b6ab8f675@linaro.org> (raw)
In-Reply-To: <20201118083044.13992-3-frank.chang@sifive.com>
On 11/18/20 12:29 AM, frank.chang@sifive.com wrote:
> +# *** RV64B Standard Extension (in addition to RV32B) ***
> +clzw 011000000000 ..... 001 ..... 0011011 @r2
> +ctzw 011000000001 ..... 001 ..... 0011011 @r2
Oh, one more thing. In the draft, the top decode bits are split into two
fields: 7+5. It would be easier to read all of these if you did the same here.
r~
next prev parent reply other threads:[~2020-11-19 19:49 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-18 8:29 [RFC 00/15] support subsets of bitmanip extension frank.chang
2020-11-18 8:29 ` [RFC 01/15] target/riscv: reformat @sh format encoding for B-extension frank.chang
2020-11-19 19:03 ` Richard Henderson
2020-11-18 8:29 ` [RFC 02/15] target/riscv: rvb: count leading/trailing zeros frank.chang
2020-11-19 19:24 ` Richard Henderson
2020-11-19 19:48 ` Richard Henderson [this message]
2020-11-18 8:29 ` [RFC 03/15] target/riscv: rvb: count bits set frank.chang
2020-11-19 19:27 ` Richard Henderson
2020-11-18 8:29 ` [RFC 04/15] target/riscv: rvb: logic-with-negate frank.chang
2020-11-19 19:28 ` Richard Henderson
2020-11-18 8:29 ` [RFC 05/15] target/riscv: rvb: pack two words into one register frank.chang
2020-11-19 19:43 ` Richard Henderson
2020-11-18 8:29 ` [RFC 06/15] target/riscv: rvb: min/max instructions frank.chang
2020-11-19 19:46 ` Richard Henderson
2020-11-18 8:29 ` [RFC 07/15] target/riscv: rvb: sign-extend instructions frank.chang
2020-11-19 19:48 ` Richard Henderson
2020-11-18 8:29 ` [RFC 08/15] target/riscv: rvb: single-bit instructions frank.chang
2020-11-19 20:05 ` Richard Henderson
2020-11-19 20:35 ` Richard Henderson
2020-11-19 21:04 ` Richard Henderson
2020-12-04 17:10 ` Frank Chang
2020-11-18 8:29 ` [RFC 09/15] target/riscv: rvb: shift ones frank.chang
2020-11-19 20:54 ` Richard Henderson
2020-11-18 8:29 ` [RFC 10/15] target/riscv: rvb: rotate (left/right) frank.chang
2020-11-19 21:06 ` Richard Henderson
2020-11-18 8:29 ` [RFC 11/15] target/riscv: rvb: generalized reverse frank.chang
2020-11-19 21:24 ` Richard Henderson
2020-11-18 8:29 ` [RFC 12/15] target/riscv: rvb: generalized or-combine frank.chang
2020-11-19 21:28 ` Richard Henderson
2020-11-18 8:29 ` [RFC 13/15] target/riscv: rvb: address calculation frank.chang
2020-11-19 21:38 ` Richard Henderson
2020-11-18 8:29 ` [RFC 14/15] target/riscv: rvb: add/sub with postfix zero-extend frank.chang
2020-11-19 22:15 ` Richard Henderson
2020-11-18 8:29 ` [RFC 15/15] target/riscv: rvb: support and turn on B-extension from command line frank.chang
2020-11-19 18:54 ` Alistair Francis
2020-11-20 3:02 ` Kito Cheng
2020-11-20 16:24 ` Alistair Francis
2020-11-23 1:22 ` Frank Chang
2020-11-19 22:26 ` [RFC 00/15] support subsets of bitmanip extension Richard Henderson
2020-11-20 1:45 ` Frank Chang
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