create bsd12 branch

java/openjdk7/files/patch-src-os-bsd-vm-vmError_bsd.cpp

@@ -0,0 +1,63 @@
+--- hotspot/src/os/bsd/vm/vmError_bsd.cpp.orig
++++ hotspot/src/os/bsd/vm/vmError_bsd.cpp
+@@ -33,30 +33,50 @@
+ #include <sys/syscall.h>
+ #include <unistd.h>
+ #include <signal.h>
++#ifdef __FreeBSD__
++#include <limits.h>
++#include <sys/sysctl.h>
++#endif
++
++#define GDB_CMD "gdb"
++
++static void set_debugger(char *buf, int buflen) {
++  int pid = os::current_process_id();
++#ifdef __FreeBSD__
++  char cmd[PATH_MAX+1];
++  int name[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, pid };
++  size_t len = sizeof(cmd);
++  if (sysctl(name, 4, cmd, &len, NULL, 0) == 0 && len > 0) {
++    cmd[len] = '\0';
++    jio_snprintf(buf, buflen, "%s %s %d", GDB_CMD, cmd, pid);
++  } else
++#endif
++  jio_snprintf(buf, buflen, "%s /proc/%d/file %d", GDB_CMD, pid, pid);
++}
+ 
+ void VMError::show_message_box(char *buf, int buflen) {
+   bool yes;
+   do {
+-    error_string(buf, buflen);
+-    int len = (int)strlen(buf);
++    intx tid = os::current_thread_id();
++    set_debugger(buf, buflen);
++    int len = (int)strlen(buf) + 1;
++    char *msg = &buf[len];
++    error_string(msg, buflen - len);
++    len += (int)strlen(msg);
+     char *p = &buf[len];
+ 
+     jio_snprintf(p, buflen - len,
+                "\n\n"
+                "Do you want to debug the problem?\n\n"
+-               "To debug, run 'gdb /proc/%d/exe %d'; then switch to thread " INTX_FORMAT " (" INTPTR_FORMAT ")\n"
+-               "Enter 'yes' to launch gdb automatically (PATH must include gdb)\n"
++               "To debug, run '%s'; then switch to thread " INTX_FORMAT " (" INTPTR_FORMAT ")\n"
++               "Enter 'yes' to launch " GDB_CMD " automatically (PATH must include " GDB_CMD ")\n"
+                "Otherwise, press RETURN to abort...",
+-               os::current_process_id(), os::current_process_id(),
+-               os::current_thread_id(), os::current_thread_id());
++               buf, tid, tid);
+ 
+-    yes = os::message_box("Unexpected Error", buf);
++    yes = os::message_box("Unexpected Error", msg);
+ 
+     if (yes) {
+       // yes, user asked VM to launch debugger
+-      jio_snprintf(buf, buflen, "gdb /proc/%d/exe %d",
+-                   os::current_process_id(), os::current_process_id());
+-
+       os::fork_and_exec(buf);
+       yes = false;
+     }