Enables/Disables Box64's Dynarec building BigBlock.
* 0 : Don't try to build block as big as possible (can help program using lots of thread and a JIT, like C#/Unity) (Default when libmonobdwgc-2.0.so is loaded)
* 1 : Build Dynarec block as big as possible (Default.)
* 2 : Build Dynarec block bigger (don't stop when block overlaps, but only for blocks in elf memory)
* 3 : Build Dynarec block bigger (don't stop when block overlaps, for all type of memory)
=item B<BOX64_DYNAREC_FORWARD>=I<0|XXX>
Define Box64's Dynarec max allowed forward value when building Block.
* 0 : No forward value. When current block end, don't try to go further even if there are previous forward jumps
* XXX : Allow up to XXXX bytes of gap when building a Block after the block end to next forward jump (Default: 128)
=item B<BOX64_DYNAREC_STRONGMEM>=I<0|1|2>
Enable/Disable simulation of Strong Memory model
* 0 : Don't try anything special (Default.)
* 1 : Enable some Memory Barrier when reading from memory (on some MOV opcode) to simulate Strong Memory Model while trying to limit performance impact (Default when libmonobdwgc-2.0.so is loaded)
* 2 : Enable some Memory Barrier when reading from memory (on some MOV opcode) to simulate Strong Memory Model
=item B<BOX64_DYNAREC_X87DOUBLE>=I<0|1>
Force the use of Double for x87 emulation
* 0 : Try to use float when possible for x87 emulation (default, faster)
* 1 : Only use Double for x87 emulation (slower, may be needed for some specific games, like Crysis)
=item B<BOX64_DYNAREC_FASTNAN>=I<0|1>
Enable/Disable generation of -NAN
* 0 : Generate -NAN like on x86
* 1 : Don't do anything special with NAN, to go as fast as possible (default, faster)
=item B<BOX64_DYNAREC_FASTROUND>=I<0|1>
Enable/Disable generation of precise x86 rounding
* 0 : Generate float/double -> int rounding like on x86
* 1 : Don't do anything special with edge case Rounding, to go as fast as possible (no INF/NAN/Overflow -> MIN_INT conversion) (default, faster)
=item B<BOX64_DYNAREC_SAFEFLAGS>=I<0|1|2>
Handling of flags on CALL/RET opcodes
* 0 : Treat CALL/RET as if it never needs any flags (faster but not advised)
* 1 : most of RET will need flags, most of CALLS will not (Default)
* 2 : All CALL/RET will need flags (slower, but might be needed. Automatically enabled for Vara.exe)
=item B<BOX64_DYNAREC_CALLRET>=I<0|1>
Optimisation of CALL/RET opcodes (not compatible with jit/dynarec/smc)
* 0 : Don't optimize CALL/RET, use Jump Table for boths (Default)
* 1 : Try to optimized CALL/RET, skipping the use of the JumpTable when possible (will crash if blacks are invalidate, so probably incompatible with JIT/Dynarec)
=item B<BOX64_DYNAREC_HOTPAGE>=I<0|1-255>
Handling of HotPage (Page beeing both executed and writen)
* 0 : Don't track hotpage
* 1-255 : Track HotPage, and disable execution of a page beeing writen for N attempts (default is 4)
=item B<BOX64_DYNAREC_FASTPAGE>=I<0|1>
Will use a faster handling of HotPage (Page beeing both executed and writen)
* 0 : use regular hotpage (Default)
* 1 : Use faster hotpage, taking the risk of running obsolete JIT code (might be faster, but more prone to crash)
=item B<BOX64_DYNAREC_BLEEDING_EDGE>=I<0|1>
Detect MonoBleedingEdge and apply conservative settings
* 0 : Don't detect MonoBleedingEdge
* 1 : Detect MonoBleedingEdge, and apply BIGBLOCK=0 STRONGMEM=1 if detected (Default)
=item B<BOX64_DYNAREC_WAIT>=I<0|1>
Behavior with FillBlock is not availble (FillBlock build Dynarec blocks and is not multithreaded)
* 0 : Dynarec will not wait for FillBlock to ready and use Interpreter instead (might speedup a bit massive multithread or JIT programs)
* 1 : Dynarec will wait for FillBlock to be ready (Default)
=item B<BOX64_SSE_FLUSHTO0>=I<0|1>
Handling of SSE Flush to 0 flags
* 0 : Just track the flag (Default)
* 1 : Direct apply of SSE Flush to 0 flag
=item B<BOX64_X87_NO80BITS>=I<0|1>
Handling of x87 80bits long double
* 0 : Try to handle 80bits long double as precise as possible (Default)
* 1 : Handle them as double
=item B<BOX64_LIBCEF>=I<0|1>
Detect libcef and apply malloc_hack settings
* 0 : Don't detect libcef
* 1 : Detect libcef, and apply MALLOC_HACK=2 if detected (Default)
=item B<BOX64_LIBGL>=I<libXXXX|/PATH/TO/libGLXXX>
You can also use B<SDL_VIDEO_GL_DRIVER>
* libXXXX set the name for libGL (defaults to libGL.so.1).
* /PATH/TO/libGLXXX : Sets the name and path for libGL
=item B<BOX64_EMULATED_LIBS>=I<XXXX[:YYYY:...]>
Force lib XXXX (and YYYY...) to be emulated (and not wrapped) Some games uses
an old version of some libraries, with an ABI incompatible with native version.
Note that LittleInferno for example is auto detected, and libvorbis.so.0 is
automatical added to emulated libs, and same for Don't Starve (and Together /
Server variant) that use an old SDL2 too
=item B<BOX64_ALLOWMISSINGLIBS>=I<0|1>
Allow Box64 to continue even if a library is missing.
* 0 : Box64 will stop if a library cannot be loaded. (Default.)
* 1 : Continue even if a needed library cannot be loaded. Unadvised, this will, in most cases, crash later on.
=item B<BOX64_PREFER_WRAPPED>=I<0|1>
Box64 will use wrapped libs even if the lib is specified with absolute path
* 0 : Try to use emulated libs when they are defined with absolute path (Default.)
* 1 : Use Wrapped native libs even if path is absolute
=item B<BOX64_PREFER_EMULATED>=I<0|1>
Box64 will prefer emulated libs first (execpt for glibc, alsa, pulse, GL,
vulkan and X11
* 0 : Native libs are prefered (Default.)
* 1 : Emulated libs are prefered (Default for program running inside pressure-vessel)
=item B<BOX64_CRASHHANDLER>=I<0|1>
Box64 will use a dummy crashhandler.so library
* 0 : Use Emulated crashhandler.so library if needed
* 1 : Use an internal dummy (completly empty) crashhandler.so library (defaut)
=item B<BOX64_MALLOC_HACK>=I<0|1|2>
How Box64 will handle hooking of malloc operators
* 0 : Don't allow malloc operator to be redirected, rewriting code to use regular function (Default)
* 1 : Allow malloc operator to be redirected (not advised)
* 2 : Like 0, but track special mmap / free (some redirected functions were inlined and cannot be redirected)
=item B<BOX64_NOPULSE>=I<0|1>
Disables the load of pulseaudio libraries.
* 0 : Load pulseaudio libraries if found. (Default.)
* 1 : Disables the load of pulse audio libraries (libpulse and libpulse-simple), both the native library and the x86 library
=item B<BOX64_NOGTK>=I<0|1>
Disables the loading of wrapped GTK libraries.
* 0 : Load wrapped GTK libraries if found. (Default.)
* 1 : Disables loading wrapped GTK libraries.
=item B<BOX64_NOVULKAN>=I<0|1>
Disables the load of vulkan libraries.
* 0 : Load vulkan libraries if found.
* 1 : Disables the load of vulkan libraries, both the native and the i386 version (can be useful on Pi4, where the vulkan driver is not quite there yet.)
=item B<BOX64_BASH>=I<yyyy>
Define x86_64 bash to launch script. Will use yyyy as x86_64 bash to launch
script. yyyy needs to be a full path to a valid x86_64 version of bash
=item B<BOX64_JITGDB>=I<0|1|2>
* 0 : Just print the Segfault message on segfault (default)
* 1 : Launch `gdb` when a segfault, bus error or illegal instruction signal is trapped, attached to the offending process and go in an endless loop, waiting. When in gdb, you need to find the correct thread yourself (the one with `my_box64signalhandler` in is stack) then probably need to `finish` 1 or 2 functions (inside `usleep(..)`) and then you'll be in `my_box64signalhandler`, just before the printf of the Segfault message. Then simply `set waiting=0` to exit the infinite loop.
* 2 : Launch `gdbserver` when a segfault, bus error or illegal instruction signal is trapped, attached to the offending process, and go in an endless loop, waiting. Use `gdb /PATH/TO/box64` and then `target remote 127.0.0.1:1234` to connect to the gdbserver (or use actual IP if not on the machine). After that, the procedure is the same as with ` BOX64_JITGDB=1`. This mode can be usefullwhen programs redirect all console output to a file (like Unity3D Games)
