From: paawan oza <paawan1982@yahoo.com>
To: Hui Zhu <teawater@gmail.com>
Cc: gdb ml <gdb@sourceware.org>
Subject: push and pop of FPU stack ; record st registers
Date: Fri, 22 May 2009 15:43:00 -0000 [thread overview]
Message-ID: <133334.94940.qm@web36207.mail.mud.yahoo.com> (raw)
Hi,
the instructions such as;
fld1, which pushes fpu stack and insn faddp pops registers stack,
we need to record all st0 to st7 registers. because all will be changed on push/pop.
as pushing/popping changes all the registers, at such insns (which does push/pop) we record all st0 to st7 registers that may affect the performance.
currently I can not think of any alternative
(may be we cache registers all the time and we record only those which may change) but by doing that we only save memory. performance is still question :(
Does anybody have any other suggestion ?
Regards,
Oza.
next reply other threads:[~2009-05-22 15:43 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-22 15:43 paawan oza [this message]
2009-05-23 4:04 ` Hui Zhu
2009-05-23 6:17 paawan oza
2009-05-23 12:01 ` Hui Zhu
2009-05-23 13:11 paawan oza
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=133334.94940.qm@web36207.mail.mud.yahoo.com \
--to=paawan1982@yahoo.com \
--cc=gdb@sourceware.org \
--cc=teawater@gmail.com \
/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