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From: | malc |
Subject: | Re: [Qemu-devel] [4705] Fix div[u]2. |
Date: | Tue, 10 Jun 2008 00:02:48 +0400 (MSD) |
On Mon, 9 Jun 2008, Fabrice Bellard wrote:
malc wrote:Revision: 4705 http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=4705 Author: malc Date: 2008-06-09 06:06:25 +0000 (Mon, 09 Jun 2008) Log Message: ----------- Fix div[u]2. Previous code assummed 32 by 32 bit divmod operation, and survived x86_64 test only by sheer luck. MIPS wasn't so forgiving.Are you sure it is needed ? div[u]2 support in currently optional in TCG. On some hosts such as PowerPC, implementing div[u] directly is simpler. rem[u] can be implemented generically then.
When i added TCG_TARGET_HAS_div_i32 plus all that is necessary to handle div[u]/rem[u]_i32 tcg started to abort at tcg.c:1180 (at least for arm-softmmu) -- mailto:address@hidden
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