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| From: | Blue Swirl |
| Subject: | [Qemu-devel] Re: [PATCH] Sparc64 user emulator support |
| Date: | Tue, 11 Jul 2006 22:08:15 +0200 |
I'm fairly surprised user emulation works at all for 64-bit targets. I'm fairly sure that code isn't even remotely 64-bit safe.
On a 32-bit host, a write() from 64-bit program succeeds because the data happens to lie below 4G. I don't know if this can be guaranteed in every case, but then system calls like exit() don't need any pointers.
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