[Bug 45864] wine mono cannot load 64-bit DLLs

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=45864

--- Comment #3 from Aaron Simmons <paleozogt at gmail.com> ---
I've uploaded a new project that builds with -platform:x86 or -platform:x64. 
It also doesn't have a native DLL involved at all-- its a simple HelloWorld.cs.

The platform arg seems to be the culprit behind why Wine Mono was running in a
32-bit process.  On a real Windows machine, a C# exe without this parameter
will run as the arch of the operating system.  I guess Wine Mono needs it to be
explicit.

Unfortunately, now that its trying to run HelloWorld.exe in a 64-bit process,
it crashes:

> $ file HelloWorld.exe 
> HelloWorld.exe: PE32+ executable (console) x86-64 Mono/.Net assembly, for MS Windows
>
> $ mono HelloWorld.exe 
> Environment.Is64BitProcess True
> Runtime Mono.Runtime
>
> $ echo $WINEARCH
> win64
>
> $ wine64 cmd
> Microsoft Windows 10.0.10240 (3.0.2)
> 
> Z:\winebug\helloworld64\bin>HelloWorld.exe
> wine: Unhandled page fault on read access to 0x140000000 at address 0x140000000 (thread 0030), starting debugger...
> Unhandled exception: page fault on read access to 0x140000000 in 64-bit code (0x0000000140000000).
> Register dump:
>  rip:0000000140000000 rsp:000000000053fdd8 rbp:000000000053ffd0 eflags:00010246 (  R- --  I  Z- -P- )
>  rax:0000000140000000 rbx:0000000000000000 rcx:00007fffffeaf000 rdx:0000000000000000
>  rsi:0000000000000000 rdi:000000000053fe40  r8:000000000053fd00  r9:0000000000000008 r10:0000000000000008
>  r11:0000000000000246 r12:0000000000000000 r13:0000000000000000 r14:0000000000000000 r15:0000000000000000
> Stack dump:
> 0x000000000053fdd8:  000000007b47a6a8 0000000000000000
> 0x000000000053fde8:  0000000000000000 0000000000000000
> 0x000000000053fdf8:  0000000000000000 0000000140000000
> 0x000000000053fe08:  00007fffffeaf000 0000000000000000
> 0x000000000053fe18:  0000000000000000 ffffffffffffffff
> 0x000000000053fe28:  000000007b4a7250 000000007b44c330
> 0x000000000053fe38:  0000000000000000 0000000000000000
> 0x000000000053fe48:  34e795fa6a2182c4 0000000000000000
> 0x000000000053fe58:  0000000000000000 0000000000000000
> 0x000000000053fe68:  0000000000000000 34e795fa6e4182c4
> 0x000000000053fe78:  34e763d2d9f182c4 0000000000000000
> 0x000000000053fe88:  0000000000000000 0000000000000000
> Backtrace:
> =>0 0x0000000140000000 in helloworld (+0x0) (0x000000000053ffd0)
>   1 0x000000007b47a6a8 in kernel32 (+0x5a6a7) (0x000000000053ffd0)
> 0x0000000140000000: popq	%r10
> Modules:
> Module	Address					Debug info	Name (18 modules)
> ELF	        7b400000-        7b819000	Dwarf           kernel32<elf>
>   \-PE	        7b420000-        7b819000	\               kernel32
> ELF	        7bc00000-        7bd1f000	Deferred        ntdll<elf>
>   \-PE	        7bc20000-        7bd1f000	\               ntdll
> ELF	        7c000000-        7c004000	Deferred        <wine-loader>
> PE	       140000000-       140006000	Export          helloworld
> ELF	    7fea078ae000-    7fea07ac0000	Deferred        libnss_files.so.2
> ELF	    7fea07ac0000-    7fea07ccc000	Deferred        libnss_nis.so.2
> ELF	    7fea07ccc000-    7fea07ee5000	Deferred        libnsl.so.1
> ELF	    7fea07ee5000-    7fea080ee000	Deferred        libnss_compat.so.2
> ELF	    7fea08cad000-    7fea08ec3000	Deferred        libgcc_s.so.1
> ELF	    7fea08ec3000-    7fea091cc000	Deferred        libm.so.6
> ELF	    7fea091cf000-    7fea093d3000	Deferred        libdl.so.2
> ELF	    7fea093d4000-    7fea0979e000	Deferred        libc.so.6
> ELF	    7fea0979e000-    7fea099bb000	Deferred        libpthread.so.0
> ELF	    7fea099d6000-    7fea09d7c000	Dwarf           libwine.so.1
> ELF	    7fea09d7d000-    7fea09fa5000	Deferred        ld-linux-x86-64.so.2
> ELF	    7ffc02f6a000-    7ffc02f6b000	Deferred        [vdso].so
> Threads:
> process  tid      prio (all id:s are in hex)
> 00000008 cmd.exe
> 	00000009    0
> 0000000e services.exe
> 	00000026    0
> 	00000023    0
> 	0000001e    0
> 	00000018    0
> 	00000013    0
> 	00000010    0
> 	0000000f    0
> 00000011 winedevice.exe
> 	0000001b    0
> 	00000017    0
> 	00000016    0
> 	00000012    0
> 0000001c plugplay.exe
> 	00000020    0
> 	0000001f    0
> 	0000001d    0
> 00000021 winedevice.exe
> 	0000002b    0
> 	00000025    0
> 	00000024    0
> 	00000022    0
> 00000029 explorer.exe
> 	0000002e    0
> 	0000002d    0
> 	0000002c    0
> 	0000002a    0
> 0000002f (D) Z:\winebug\helloworld64\bin\HelloWorld.exe
> 	00000030    0 <==
> System information:
>     Wine build: wine-3.0.2
>     Platform: x86_64
>     Version: Windows 10
>     Host system: Linux
>     Host version: 4.4.0-21-generic

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