java/openjdk24: fix build on powerpc64*

Same issue as previously openjdk22 and openjdk23.

java/openjdk24/files/patch-src_hotspot_os__cpu_bsd__ppc_os__bsd__ppc.cpp

@@ -0,0 +1,44 @@
+--- src/hotspot/os_cpu/bsd_ppc/os_bsd_ppc.cpp.orig	2024-04-11 22:23:08 UTC
++++ src/hotspot/os_cpu/bsd_ppc/os_bsd_ppc.cpp
+@@ -61,6 +61,7 @@
+ # include <sys/types.h>
+ # include <sys/mman.h>
+ # include <pthread.h>
++# include <pthread_np.h>
+ # include <signal.h>
+ # include <errno.h>
+ # include <dlfcn.h>
+@@ -432,6 +433,33 @@ size_t os::Posix::default_stack_size(os::ThreadType th
+   // Default stack size (compiler thread needs larger stack).
+   size_t s = (thr_type == os::compiler_thread ? 4 * M : 1024 * K);
+   return s;
++}
++
++void os::current_stack_base_and_size(address* base, size_t* size) {
++  address bottom;
++  pthread_attr_t attr;
++
++  int rslt = pthread_attr_init(&attr);
++
++  // JVM needs to know exact stack location, abort if it fails  
++  if (rslt != 0)
++    fatal("pthread_attr_init failed with error = %d", rslt);
++
++  rslt = pthread_attr_get_np(pthread_self(), &attr);
++
++  if (rslt != 0)
++    fatal("pthread_attr_get_np failed with error = %d", rslt);
++
++  if (pthread_attr_getstackaddr(&attr, (void **)&bottom) != 0 ||
++      pthread_attr_getstacksize(&attr, size) != 0) {
++    fatal("Can not locate current stack attributes!");
++  }
++
++  *base = bottom + *size;
++
++  pthread_attr_destroy(&attr);
++  assert(os::current_stack_pointer() >= bottom &&
++         os::current_stack_pointer() < *base, "just checking");
+ }
+ 
+ /////////////////////////////////////////////////////////////////////////////