(unwi_get_proc_name): Drop "is_local" argument. Test "as" against

"unw_local_addr_space" instead.

2003/02/21 22:03:46-08:00 mostang.com!davidm
Rename: src/get_proc_name.c -> src/Gget_proc_name.c

(Logical change 1.54)

src/Gget_proc_name.c

@@ -0,0 +1,104 @@
+/* libunwind - a platform-independent unwind library
+   Copyright (C) 2001-2003 Hewlett-Packard Co
+	Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
+
+This file is part of libunwind.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
+
+#include <endian.h>
+
+#include "internal.h"
+
+static int
+intern_string (unw_addr_space_t as, unw_accessors_t *a,
+	       unw_word_t addr, char *buf, size_t buf_len, void *arg)
+{
+  size_t i;
+  int ret;
+
+  for (i = 0; i < buf_len; ++i)
+    {
+      if ((ret = fetch8 (as, a, &addr, buf + i, arg)) < 0)
+	return ret;
+
+      if (buf[i] == '\0')
+	return 0;		/* copied full string; return success */
+    }
+  buf[buf_len - 1] = '\0';	/* ensure string is NUL terminated */
+  return -UNW_ENOMEM;
+}
+
+HIDDEN int
+unwi_get_proc_name (unw_addr_space_t as, unw_word_t ip,
+		    char *buf, size_t buf_len, unw_word_t *offp, void *arg)
+{
+  unw_accessors_t *a = unw_get_accessors (as);
+  unw_proc_info_t pi;
+  int ret;
+
+  buf[0] = '\0';	/* always return a valid string, even if it's empty */
+
+  ret = unwi_find_dynamic_proc_info (as, ip, &pi, 1, arg);
+  if (ret == 0)
+    {
+      unw_dyn_info_t *di = pi.unwind_info;
+
+      if (offp)
+	*offp = ip - pi.start_ip;
+
+      switch (di->format)
+	{
+	case UNW_INFO_FORMAT_DYNAMIC:
+	  ret = intern_string (as, a, di->u.pi.name_ptr, buf, buf_len, arg);
+	  break;
+
+	case UNW_INFO_FORMAT_TABLE:
+	  /* XXX should we create a fake name, e.g.: "tablenameN",
+	     where N is the index of the function in the table??? */
+	  ret = -UNW_ENOINFO;
+	  break;
+
+	default:
+	  ret = -UNW_EINVAL;
+	  break;
+	}
+      unwi_put_dynamic_unwind_info (as, &pi, arg);
+      return ret;
+    }
+
+  if (ret != -UNW_ENOINFO)
+    return ret;
+
+  /* not a dynamic procedure */
+
+#ifdef UNW_REMOTE_ONLY
+  return -UNW_ENOINFO;
+#else
+  if (as != unw_local_addr_space)
+    /* It makes no sense to implement get_proc_name() for remote
+       address spaces because that would require a callback and in
+       that case, the application using libunwind needs to know how to
+       look up a procedure name anyhow.  */
+    return -UNW_ENOINFO;
+
+  return tdep_get_proc_name (ip, buf, buf_len, offp);
+#endif
+}