src/os_cpu/solaris_sparc/vm/os_solaris_sparc.cpp
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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:
@@ -249,10 +249,19 @@
frame os::get_sender_for_C_frame(frame* fr) {
return frame(fr->sender_sp(), frame::unpatchable, fr->sender_pc());
}
+// Returns an estimate of the current stack pointer. Result must be guaranteed to
+// point into the calling threads stack, and be no lower than the current stack
+// pointer.
+address os::current_stack_pointer() {
+ volatile int dummy;
+ address sp = (address)&dummy + 8; // %%%% need to confirm if this is right
+ return sp;
+}
+
frame os::current_frame() {
intptr_t* sp = StubRoutines::Sparc::flush_callers_register_windows_func()();
frame myframe(sp, frame::unpatchable,
CAST_FROM_FN_PTR(address, os::current_frame));
if (os::is_first_C_frame(&myframe)) {
@@ -813,5 +822,10 @@
// For compiler1 the architecture is v8 and frps isn't present in v8
extern "C" void _mark_fpu_nosave() {
__asm__ __volatile__ ("wr %%g0, 0, %%fprs \n\t" : : :);
}
#endif //defined(__sparc) && defined(COMPILER2)
+
+#ifndef PRODUCT
+void os::verify_stack_alignment() {
+}
+#endif