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Re: [B2-devel] x86_64 Mach-O dyngen patch
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From: Alexei S. <ale...@gm...> - 2009-11-08 18:17:57
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Committed with a little bit of formatting cleanup.
-Alexei
On Tue, Oct 27, 2009 at 5:33 PM, Jean-Pierre <cho...@fr...> wrote:
> Hi,
> Le 25 oct. 2009 à 23:37, Jean-Pierre a écrit :
>
> Here's a dyngen patch for Snow Leopard x86_64 compatibility. This work is
> mostly based on the unofficial and incomplete x86_64 mach-o patch of qemu.
> The JIT compiler seems to be ok in 64 bit mode, since I have the 'happy mac'
> at boot time, but the application crashes later...
>
> When cleaning the dyngen code, I broke the x86_64 ELF part, It won't compile
> because of the lines 2283-2285:
> if (rel->r_offset >= start_offset &&
> int slide;
> rel->r_offset < start_offset + copy_size) {
> that should be:
> if (rel->r_offset >= start_offset &&
> rel->r_offset < start_offset + copy_size) {
> int slide;
> Sorry about this.
> The JIT compiler still crashes when using the code generated by Apple's gcc
> on ppc-dyngen-ops.cpp.
> I'm not sure why the resulting assembly code is so different from a Linux
> 64-bit gcc install. I used otool on Mac and dumpobj on Linux to compare
> these, and many functions are using different opcodes.
> if I replace the ppc-dyngen-ops.hpp file by one built on a Linux 64-bit
> machine, then SheepShaver runs fine in 64-bit mode with the JIT compiler on
> Snow Leopard.
> Best regards,
> - Jean-Pierre.
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