1 files changed, 104 insertions, 0 deletions
diff --git a/gprof/i386.c b/gprof/i386.c
new file mode 100644
index 00000000000..18aad1caeec
--- /dev/null
+++ b/gprof/i386.c
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that: (1) source distributions retain this entire copyright
+ * notice and comment, and (2) distributions including binaries display
+ * the following acknowledgement:  ``This product includes software
+ * developed by the University of California, Berkeley and its contributors''
+ * in the documentation or other materials provided with the distribution
+ * and in all advertising materials mentioning features or use of this
+ * software. Neither the name of the University nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+#include "gprof.h"
+#include "cg_arcs.h"
+#include "corefile.h"
+#include "hist.h"
+#include "symtab.h"
+
+
+int
+DEFUN (i386_iscall, (ip), unsigned char *ip)
+{
+  if (*ip == 0xe8)
+    return 1;
+  return 0;
+}
+
+
+void
+i386_find_call (parent, p_lowpc, p_highpc)
+     Sym *parent;
+     bfd_vma p_lowpc;
+     bfd_vma p_highpc;
+{
+  unsigned char *instructp;
+  Sym *child;
+  bfd_vma destpc, delta;
+
+  if (core_text_space == 0)
+    {
+      return;
+    }
+  if (p_lowpc < s_lowpc)
+    {
+      p_lowpc = s_lowpc;
+    }
+  if (p_highpc > s_highpc)
+    {
+      p_highpc = s_highpc;
+    }
+  DBG (CALLDEBUG, printf ("[findcall] %s: 0x%lx to 0x%lx\n",
+			  parent->name, p_lowpc, p_highpc));
+
+  delta = (bfd_vma) core_text_space - core_text_sect->vma;
+
+  for (instructp = (unsigned char *) (p_lowpc + delta);
+       instructp < (unsigned char *) (p_highpc + delta);
+       instructp ++)
+    {
+      if (i386_iscall (instructp))
+	{
+	  DBG (CALLDEBUG,
+	       printf ("[findcall]\t0x%x:call",
+		       instructp - (unsigned char *) delta));
+	  /*
+	   *  regular pc relative addressing
+	   *    check that this is the address of 
+	   *    a function.
+	   */
+
+	  destpc = ((bfd_vma) bfd_get_32 (core_bfd, instructp + 1)
+		    + (bfd_vma) instructp - (bfd_vma) delta + 5);
+	  if (destpc >= s_lowpc && destpc <= s_highpc)
+	    {
+	      child = sym_lookup (&symtab, destpc);
+	      if (child && child->addr == destpc)
+		{
+		  /*
+		   *      a hit
+		   */
+		  DBG (CALLDEBUG,
+		       printf ("\tdestpc 0x%lx (%s)\n", destpc, child->name));
+		  arc_add (parent, child, (unsigned long) 0);
+		  instructp += 4;	/* call is a 5 byte instruction */
+		  continue;
+		}
+	    }
+	  /*
+	   *  else:
+	   *    it looked like a callf, but it:
+	   *      a) wasn't actually a callf, or
+	   *      b) didn't point to a known function in the symtab, or
+	   *      c) something funny is going on.
+	   */
+	  DBG (CALLDEBUG, printf ("\tbut it's a botch\n"));
+	}
+    }
+}