src/os_cpu/solaris_x86/vm/os_solaris_x86.cpp

rev 3149 : 7147740: add assertions to check stack alignment on VM entry from generated code (x64)
Summary: check stack alignment on VM entry on x64.
Reviewed-by:

*** 235,244 ****
--- 235,250 ----
  
  frame os::get_sender_for_C_frame(frame* fr) {
    return frame(fr->sender_sp(), fr->link(), fr->sender_pc());
  }
  
+ extern "C" intptr_t *_get_current_sp();  // in .il file
+ 
+ address os::current_stack_pointer() {
+   return (address)_get_current_sp();;
+ }
+ 
  extern "C" intptr_t *_get_current_fp();  // in .il file
  
  frame os::current_frame() {
    intptr_t* fp = _get_current_fp();  // it's inlined so want current fp
    frame myframe((intptr_t*)os::current_stack_pointer(),
*** 952,956 ****
--- 958,970 ----
  void os::setup_fpu() {
    address fpu_cntrl = StubRoutines::addr_fpu_cntrl_wrd_std();
    _solaris_raw_setup_fpu(fpu_cntrl);
  }
  #endif // AMD64
+ 
+ #ifndef PRODUCT
+ void os::verify_stack_alignment() {
+ #ifdef AMD64
+   assert(((intptr_t)os::current_stack_pointer() & (StackAlignmentInBytes-1)) == 0, "incorrect stack alignment");
+ #endif
+ }
+ #endif