From a8238d0b25af98b623ec5f16f949e74e96eb4ced Mon Sep 17 00:00:00 2001
From: Peter Boyle <paboyle@ph.ed.ac.uk>
Date: Wed, 4 Mar 2015 13:43:19 +0000
Subject: [PATCH] Move to better name

---
 Grid_init.cc | 82 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100755 Grid_init.cc

diff --git a/Grid_init.cc b/Grid_init.cc
new file mode 100755
index 00000000..e943c3b0
--- /dev/null
+++ b/Grid_init.cc
@@ -0,0 +1,82 @@
+/****************************************************************************/
+/* PAB: Signal magic. Processor state dump is x86-64 specific               */
+/****************************************************************************/
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <unistd.h>
+#include <sys/mman.h>
+#include <sys/stat.h> 
+#include <sys/time.h>
+#include <signal.h>
+
+#include "Grid.h"
+
+#undef __X86_64
+namespace dpo {
+
+void Grid_init(void)
+{
+  Grid_debug_handler_init();
+}
+double usecond(void) {
+  struct timeval tv;
+  gettimeofday(&tv,NULL);
+  return 1.0*tv.tv_usec + 1.0e6*tv.tv_sec;
+}
+
+void Grid_sa_signal_handler(int sig,siginfo_t *si,void * ptr)
+{
+         ucontext_t * uc= (ucontext_t *)ptr;
+
+  printf("Caught signal %d\n",si->si_signo);
+  printf("  mem address %llx\n",(uint64_t)si->si_addr);
+  printf("         code %d\n",si->si_code);
+
+#ifdef __X86_64
+  struct sigcontext *sc = (struct sigcontext *)&uc->uc_mcontext;
+  printf("  instruction %llx\n",(uint64_t)sc->rip);
+
+#define REG(A)  printf("  %s %lx\n",#A, sc-> A);
+  REG(rdi);
+  REG(rsi);
+  REG(rbp);
+  REG(rbx);
+  REG(rdx);
+  REG(rax);
+  REG(rcx);
+  REG(rsp);
+  REG(rip);
+
+
+  REG(r8);
+  REG(r9);
+  REG(r10);
+  REG(r11);
+  REG(r12);
+  REG(r13);
+  REG(r14);
+  REG(r15);
+#endif
+
+  fflush(stdout);
+
+  if ( si->si_signo == SIGSEGV ) {
+    printf("Grid_sa_signal_handler: Oops... this was a sigsegv you naughty naughty programmer. Goodbye\n");
+    fflush(stdout);
+    exit(-1);
+  }
+  return;
+};
+
+void Grid_debug_handler_init(void)
+{
+  struct sigaction sa,osa;
+  sigemptyset (&sa.sa_mask);
+  sa.sa_sigaction= Grid_sa_signal_handler;
+  sa.sa_flags    = SA_SIGINFO;
+  sigaction(SIGSEGV,&sa,NULL);
+  sigaction(SIGTRAP,&sa,NULL);
+}
+}