Thanks, Eliot. Guillermo started working on that thing, and i really hope with our help he will manage to do it. And then once we will have 64-bit stack VM working, it will open a straight road to 64-bit jit implementation.
On 28 August 2012 20:44, Eliot Miranda eliot.miranda@gmail.com wrote:
On Tue, Aug 28, 2012 at 8:47 AM, Guillermo Polito guillermopolito@gmail.com wrote:
the rest is COMPILED this is the only thing which prevents from linking StackVM and getting a binary on Mac OSX. Since x86 are similar to x64. i expect this can be done without much changes in assembler code.
Please help/advice.
Undefined symbols for architecture x86_64: "_sqLowLevelMFence", referenced from: _forceInterruptCheck in gcc3x-interp.c.o _primitiveLongRunningPrimitiveSemaphore in gcc3x-interp.c.o _markAndTraceInterpreterOops in gcc3x-interp.c.o _primitiveDoPrimitiveWithArgs in gcc3x-interp.c.o _beRootIfOld in gcc3x-interp.c.o _updatePointersInRangeFromto in gcc3x-interp.c.o _setInterruptPending in gcc3x-interp.c.o ... "_sqCompareAndSwapRes", referenced from: _signalSemaphoreWithIndex in sqExternalSemaphores.c.o
this line in platforms/Cross/vm/sqMemoryFence.h should work fine:
# define sqLowLevelMFence() asm volatile ("mfence")
ld: symbol(s) not found for architecture x86_64 collect2: ld returned 1 exit status make[2]: *** [/Users/guillermopolito/Pharo/vm/self-compiled/blessed/results/StackVM.app/Contents/MacOS/StackVM] Error 1 make[1]: *** [CMakeFiles/StackVM.dir/all] Error 2 make: *** [all] Error 2
again the macro definitions in platforms/Cross/vm/sqAtomicOps.h shoild be fine:
# define sqCompareAndSwap(var,old,new) \ asm volatile ("movl %1, %%eax; lock cmpxchg %2, %0" \ : "=m"(var) \ : "g"(old), "r"(new), "m"(var)\ : "memory", "%eax")
# define sqCompareAndSwapRes(var,old,new,res) \ asm volatile ("movl %2, %%eax; lock cmpxchg %3, %0; movl %%eax, %1" \ : "=m"(var), "=g"(res) \ : "g"(old), "r"(new), "m"(var) \ : "memory", "%eax")
All you have to do is take these definitions and add them in a separate arm for x86-64, e.g.
#if defined(__GNUC__) && (defined(i386) || defined(__i386) || defined(__i386__) || defined(_X86_)) ....existing definitions... #else ...
becomes
#if defined(__GNUC__) # if defined(i386) || defined(__i386) || defined(__i386__) || defined(_X86_)) ....existing definitions... # elif defined(x64) /* or whatever else x86-64 is called */ ....copy of x86 definitions that use assembler (i.e. *not* asm volatile (".byte 0x0f;.byte 0xae;.byte 0xf0")) ... # endif #else ...
-- best, Eliot