so that the main thread is not different from others.
as a side effect, fix memory leak in pthread_create on error.
- make pthread__stackid_setup return a error rather than calling err(2).
- statically initialize all global spin locks. on hppa, 0 means
the lock is held, so leaving them with the default value doesn't work.
- compare functions pointers using a function-pointer type rather than
an integral type. on hppa, function pointers may be indirect,
so we need to trigger gcc to emit calls to the function-pointer
canonicalization routines in the millicode.
- on hppa the stack grows up, so handle that using the STACK_* macros.
- add pt_stackinfo to struct __pthread_st
- add pthread__stackinfo_offset returning the offset from ss_sp to
pt_stackinfo
- pass stackinfo_offset to sa_register and set SA_FLAG_STACKINFO to
make the kernel use it
- call pthread__sa_recycle in pthread__resolve_locks; g/c recycleq and
pthread__recycle_bulk
- return stack in pthread__sa_recycle by incrementing sasi_stackgen
- make pthread__sa_recycle debugging output formatting conditional on
pthread__debug_newline
with the shell's command to change limits. Make the PTHREAD_STACKSIZE
environment variable override the default stack size. The old fixed
stack size behaviour can be enable with PT_FIXEDSTACKSIZE_LG when building
libpthread.
- remove argument variable names since they pollute the namespace
- add mock implementation of the missing stack functions
XXX: we need to do this right [i.e. actually get and set sizes and addresses]
but the current stack setup makes this a bit complicated.
