From: Aurelien Jarno <aurelien@aurel32.net>
To: James Hogan <james.hogan@imgtec.com>
Cc: Leon Alrae <leon.alrae@imgtec.com>,
qemu-devel@nongnu.org, Richard Henderson <rth@twiddle.net>
Subject: Re: [Qemu-devel] [PATCH v3 4/6] tcg/mips: Support r6 JR encoding
Date: Thu, 8 Oct 2015 18:15:51 +0200 [thread overview]
Message-ID: <20151008161551.GA7306@aurel32.net> (raw)
In-Reply-To: <1443788657-14537-5-git-send-email-james.hogan@imgtec.com>
On 2015-10-02 13:24, James Hogan wrote:
> MIPSr6 encodes JR as JALR with zero as the link register, and the pre-r6
> JR encoding is removed. Update TCG to use the new encoding when built
> for r6.
>
> We still use the old encoding for pre-r6, so as not to confuse return
> prediction stack hardware which may detect only particular encodings of
> the return instruction.
>
> Signed-off-by: James Hogan <james.hogan@imgtec.com>
> Reviewed-by: Richard Henderson <rth@twiddle.net>
> Cc: Aurelien Jarno <aurelien@aurel32.net>
> ---
> Changes in v2:
> - Turn #define into enum (Richard).
> ---
> tcg/mips/tcg-target.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
--
Aurelien Jarno GPG: 4096R/1DDD8C9B
aurelien@aurel32.net http://www.aurel32.net
next prev parent reply other threads:[~2015-10-08 17:02 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-02 12:24 [Qemu-devel] [PATCH v3 0/6] tcg/mips: Minimal R6 support James Hogan
2015-10-02 12:24 ` [Qemu-devel] [PATCH v3 1/6] tcg-opc.h: Simplify debug_insn_start def James Hogan
2015-10-08 16:12 ` Aurelien Jarno
2015-10-02 12:24 ` [Qemu-devel] [PATCH v3 2/6] disas/mips: Add R6 jr/jr.hb to disassembler James Hogan
2015-10-08 16:12 ` Aurelien Jarno
2015-10-02 12:24 ` [Qemu-devel] [PATCH v3 3/6] tcg/mips: Add use_mips32r6_instructions definition James Hogan
2015-10-08 16:12 ` Aurelien Jarno
2015-10-02 12:24 ` [Qemu-devel] [PATCH v3 4/6] tcg/mips: Support r6 JR encoding James Hogan
2015-10-08 16:15 ` Aurelien Jarno [this message]
2015-10-02 12:24 ` [Qemu-devel] [PATCH v3 5/6] tcg/mips: Support r6 multiply/divide encodings James Hogan
2015-10-08 16:19 ` Aurelien Jarno
2015-10-02 12:24 ` [Qemu-devel] [PATCH v3 6/6] tcg/mips: Support r6 SEL{NE, EQ}Z instead of MOVN/MOVZ James Hogan
2015-10-07 9:46 ` Richard Henderson
2015-10-07 10:34 ` James Hogan
2015-10-07 19:54 ` Richard Henderson
2015-10-07 11:47 ` Leon Alrae
2015-10-08 16:32 ` Aurelien Jarno
2015-10-08 16:31 ` Aurelien Jarno
2015-10-09 21:26 ` James Hogan
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