436 
 437 void os::Linux::init_thread_fpu_state(void) {
 438   // Disable FP exceptions.
 439   __asm__ __volatile__ ("mtfsfi 6,0");
 440 }
 441 
 442 int os::Linux::get_fpu_control_word(void) {
 443   // x86 has problems with FPU precision after pthread_cond_timedwait().
 444   // nothing to do on ppc64.
 445   return 0;
 446 }
 447 
 448 void os::Linux::set_fpu_control_word(int fpu_control) {
 449   // x86 has problems with FPU precision after pthread_cond_timedwait().
 450   // nothing to do on ppc64.
 451 }
 452 
 453 ////////////////////////////////////////////////////////////////////////////////
 454 // thread stack
 455 
 456 size_t os::Linux::min_stack_allowed = 768*K;
 457 
 458 bool os::Linux::supports_variable_stack_size() { return true; }
 459 
 460 // return default stack size for thr_type
 461 size_t os::Linux::default_stack_size(os::ThreadType thr_type) {
 462   // default stack size (compiler thread needs larger stack)
 463   // Notice that the setting for compiler threads here have no impact
 464   // because of the strange 'fallback logic' in os::create_thread().
 465   // Better set CompilerThreadStackSize in globals_<os_cpu>.hpp if you want to
 466   // specify a different stack size for compiler threads!
 467   size_t s = (thr_type == os::compiler_thread ? 4 * M : 1024 * K);
 468   return s;
 469 }
 470 
 471 size_t os::Linux::default_guard_size(os::ThreadType thr_type) {
 472   return 2 * page_size();
 473 }
 474 
 475 // Java thread:
 476 //

 436 
 437 void os::Linux::init_thread_fpu_state(void) {
 438   // Disable FP exceptions.
 439   __asm__ __volatile__ ("mtfsfi 6,0");
 440 }
 441 
 442 int os::Linux::get_fpu_control_word(void) {
 443   // x86 has problems with FPU precision after pthread_cond_timedwait().
 444   // nothing to do on ppc64.
 445   return 0;
 446 }
 447 
 448 void os::Linux::set_fpu_control_word(int fpu_control) {
 449   // x86 has problems with FPU precision after pthread_cond_timedwait().
 450   // nothing to do on ppc64.
 451 }
 452 
 453 ////////////////////////////////////////////////////////////////////////////////
 454 // thread stack
 455 
 456 size_t os::Linux::min_stack_allowed = 128*K;
 457 
 458 bool os::Linux::supports_variable_stack_size() { return true; }
 459 
 460 // return default stack size for thr_type
 461 size_t os::Linux::default_stack_size(os::ThreadType thr_type) {
 462   // default stack size (compiler thread needs larger stack)
 463   // Notice that the setting for compiler threads here have no impact
 464   // because of the strange 'fallback logic' in os::create_thread().
 465   // Better set CompilerThreadStackSize in globals_<os_cpu>.hpp if you want to
 466   // specify a different stack size for compiler threads!
 467   size_t s = (thr_type == os::compiler_thread ? 4 * M : 1024 * K);
 468   return s;
 469 }
 470 
 471 size_t os::Linux::default_guard_size(os::ThreadType thr_type) {
 472   return 2 * page_size();
 473 }
 474 
 475 // Java thread:
 476 //