From: Richard Henderson <rth@twiddle.net>
To: qemu-devel@nongnu.org
Cc: aurelien@aurel32.net
Subject: [Qemu-devel] [PATCH 0/5] tcg-arm: Runtime detection of architecture
Date: Thu, 6 Jun 2013 11:05:42 -0700 [thread overview]
Message-ID: <1370541947-909-1-git-send-email-rth@twiddle.net> (raw)
Two prepatory generic tcg patches, to allow non-constant values for
the various TCG_TARGET_HAS_foo macros.
When in patch 3 this gets used, the code inlined in the translators
will be able to check the relevant variable and emit either division
opcode or the call to the division subroutine.
Perhaps more valuable is being able to generate armv7 insns when
running on e.g. an cortex-a15, even when the OS distribution is
built for a more generic armv5.
Tested on an a15, and with various hacks to force each of the unused
code paths to be used.
r~
Richard Henderson (5):
tcg: Allow non-constant control macros
tcg: Simplify logic using TCG_OPF_NOT_PRESENT
tcg-arm: Make use of conditional availability of opcodes for divide
tcg-arm: Simplify logic in detecting the ARM ISA in use
tcg-arm: Use AT_PLATFORM to detect the host ISA
tcg/arm/tcg-target.c | 82 +++++++++++++++++++++++++++-------------------------
tcg/arm/tcg-target.h | 14 +++++----
tcg/tcg-opc.h | 28 ++++++++++--------
tcg/tcg.c | 4 +--
tcg/tcg.h | 3 +-
5 files changed, 69 insertions(+), 62 deletions(-)
--
1.8.1.4
next reply other threads:[~2013-06-06 18:06 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-06 18:05 Richard Henderson [this message]
2013-06-06 18:05 ` [Qemu-devel] [PATCH 1/5] tcg: Allow non-constant control macros Richard Henderson
2013-06-06 18:05 ` [Qemu-devel] [PATCH 2/5] tcg: Simplify logic using TCG_OPF_NOT_PRESENT Richard Henderson
2013-06-06 18:05 ` [Qemu-devel] [PATCH 3/5] tcg-arm: Make use of conditional availability of opcodes for divide Richard Henderson
2013-06-06 18:05 ` [Qemu-devel] [PATCH 4/5] tcg-arm: Simplify logic in detecting the ARM ISA in use Richard Henderson
2013-06-06 18:05 ` [Qemu-devel] [PATCH 5/5] tcg-arm: Use AT_PLATFORM to detect the host ISA Richard Henderson
2013-06-10 18:42 ` [Qemu-devel] [PATCH 0/5] tcg-arm: Runtime detection of architecture Richard Henderson
2013-06-17 15:56 ` Richard Henderson
2013-06-25 3:44 ` Richard Henderson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1370541947-909-1-git-send-email-rth@twiddle.net \
--to=rth@twiddle.net \
--cc=aurelien@aurel32.net \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).