WinUAE getting a 64bit JIT upgrade?

[bloodline]

Just reading through the WinUAE sources, and I notice the JIT now has some x86-64 ifdefs. The copyright notice on the files has not been updated for ages, so this could be old work... But it would be very cool take advantage of the newer processor

Anyone know anything about this?

On a related note, I was reading the source to see how tightly the WinUAE code is with its GUI code, I would like to get a MacOS X (Cocoa based) target as part of the standard WinUAE tree.

[Thomas]

WinUAE getting a 64bit JIT upgrade?

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Just reading through the WinUAE sources, and I notice the JIT now has some x86-64 ifdefs.

I rather think that the opposite is true. Toni made an experimental 64bit version of WinUAE and I suppose he added the ifdefs in order to *remove* JIT from it because there is no 64bit JIT.

[B00tDisk]

Yeah...there's a thread bout this over on the english amiga board; here is where you'll find it.

[bloodline]

Ahhh, OK. cheers guys.

[ElPolloDiabl]

Why don't we get some bounties going?

[Karlos]

You guys want to be careful what you wish for.

Experimenting with GCC 4.2.4 64-bit, I found some very strange behaviour with code performance for my old virtual machine project.

The code compiled for 32-bit and -mtuned for P4 runs about 30% faster on my core2 than exactly the same code compiled for my core2 64-bit native and -mtuned for core2:

Code: [Select]


karlos@Megaburken-II:/extropia/exvm/bin$ ./exvm_x64
VM compiled 64-bit native
There are presently 239 core instructions defined

Beginning Virtual Program
-----------------------

Allocated buffer [512 x 512]
Wrote buffer 'framebuffer.pgm'
Freed buffer
Executed 319360443 statements
Time taken :3306.496ms

-----------------------

VMCore dump

rX:  64-bit (hex dump) :          s32 :    s16 :   s8 : c
 1: 0x0000000000000000 :            0 :      0 :    0 : . : 0.00000000
 2: 0x0000000000000200 :          512 :    512 :    0 : . : 0.00000000
 3: 0x0000000000000200 :          512 :    512 :    0 : . : 0.00000000
 4: 0x000000003FA00000 :   1067450368 :      0 :    0 : . : 1.25000000
 5: 0x0000000000000200 :          512 :    512 :    0 : . : 0.00000000
 6: 0x00000000BFE00000 :   3219128320 :      0 :    0 : . : -1.75000000
 7: 0x000000003F400000 :   1061158912 :      0 :    0 : . : 0.75000000
 8: 0x000000003BA00000 :   1000341504 :      0 :    0 : . : 0.00488281
 9: 0x0000000000000200 :          512 :    512 :    0 : . : 0.00000000
10: 0x00000000000000FF :          255 :    255 :   -1 : . : 0.00000000
11: 0x00000000C10CE6A7 :   3238848167 :  -6489 :  -89 : . : -8.80631161
12: 0x00000000BE9C4320 :   3197911840 :  17184 :   32 : . : -0.30519962
13: 0x0000000000000004 :            4 :      4 :    4 : . : 0.00000000
14: 0x00000000411AD2A7 :   1092276903 : -11609 :  -89 : . : 9.67642879
15: 0x00000000BE9C4320 :   3197911840 :  17184 :   32 : . : -0.30519962
16: 0x0000000000404868 :      4212840 :  18536 :  104 : h : 0.00000000
PC: 0x605af2
RS: 0x606010 (0)
DS: 0x608020 (0)
CS: 0x609030 (0)
ST: 0x00000002 (Completed)


Code: [Select]


karlos@Megaburken-II:/extropia/exvm/bin$ ./exvm_x86
VM compiled 32-bit native
There are presently 239 core instructions defined

Beginning Virtual Program
-----------------------

Allocated buffer [512 x 512]
Wrote buffer 'framebuffer.pgm'
Freed buffer
Executed 319360443 statements
Time taken :2191.308ms

-----------------------

VMCore dump

rX:  64-bit (hex dump) :          s32 :    s16 :   s8 : c
 1: 0x0000000000000000 :            0 :      0 :    0 : . : 0.00000000
 2: 0x0000000000000200 :          512 :    512 :    0 : . : 0.00000000
 3: 0x0000000000000200 :          512 :    512 :    0 : . : 0.00000000
 4: 0x000000003FA00000 :   1067450368 :      0 :    0 : . : 1.25000000
 5: 0x0000000000000200 :          512 :    512 :    0 : . : 0.00000000
 6: 0x00000000BFE00000 :  -1075838976 :      0 :    0 : . : -1.75000000
 7: 0x000000003F400000 :   1061158912 :      0 :    0 : . : 0.75000000
 8: 0x000000003BA00000 :   1000341504 :      0 :    0 : . : 0.00488281
 9: 0x0000000000000200 :          512 :    512 :    0 : . : 0.00000000
10: 0x00000000000000FF :          255 :    255 :   -1 : . : 0.00000000
11: 0x00000000C10CE6A7 :  -1056119129 :  -6489 :  -89 : . : -8.80631161
12: 0x00000000BE9C4320 :  -1097055456 :  17184 :   32 : . : -0.30519962
13: 0x0000000000000004 :            4 :      4 :    4 : . : 0.00000000
14: 0x00000000411AD2A7 :   1092276903 : -11609 :  -89 : . : 9.67642879
15: 0x00000000BE9C4320 :  -1097055456 :  17184 :   32 : . : -0.30519962
16: 0x000000000804C81C :    134531100 : -14308 :   28 : . : 0.00000000
PC: 0x0804E3B2
RS: 0x0804F008 (0)
DS: 0x08051010 (0)
CS: 0x08052018 (0)
ST: 0x00000002 (Completed)





This trend was not observed with AMD Athlon 64.