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
# 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