| To: | linux-mips@linux-mips.org |
|---|---|
| Subject: | Re: GCCFLAGS for gcc 3.3.x (-march and _MIPS_ISA) |
| From: | Thiemo Seufer <ica2_ts@csv.ica.uni-stuttgart.de> |
| Date: | Thu, 14 Aug 2003 05:03:59 +0200 |
| In-reply-to: | <20030813.002644.59461513.anemo@mba.ocn.ne.jp> |
| Original-recipient: | rfc822;linux-mips@linux-mips.org |
| References: | <20030812065118.GD23104@rembrandt.csv.ica.uni-stuttgart.de> <20030812.190636.39150536.nemoto@toshiba-tops.co.jp> <20030812101625.GJ23104@rembrandt.csv.ica.uni-stuttgart.de> <20030813.002644.59461513.anemo@mba.ocn.ne.jp> |
| Sender: | linux-mips-bounce@linux-mips.org |
| User-agent: | Mutt/1.5.4i |
Atsushi Nemoto wrote: > >>>>> On Tue, 12 Aug 2003 12:16:25 +0200, Thiemo Seufer > >>>>> <ica2_ts@csv.ica.uni-stuttgart.de> said: > > >> Does anybody know why __BUILD_clear_ade uses MFC0 and REG_S > >> though other parts using mfc0 and sw ? > > Thiemo> Probably because BADVADDR has to be 64bit for 64bit > Thiemo> kernels. :-) > > If so, MFC0 and REG_S should be controlled by __mips64 (or > CONFIG_MIPS64) as you and Maciej W. Rozycki said in other mails. I > wonder why currently is not. Historical reason ? :-) Pre-3.0 gcc used -mips2 instead of -mabi=32 as hint to generate 32bit code. I guess the defines were affected by this also. Thiemo |
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