From: Petr Machata <pmachata@redhat.com>
Date: Tue, 28 Apr 2009 16:38:27 +0000 (+0200)
Subject: Add length read hooks
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b130453eb16a8cf042915e312cc5f189b8b92c01;p=thirdparty%2Felfutils.git

Add length read hooks
---

diff --git a/libdw/ChangeLog b/libdw/ChangeLog
index 55c87014d..ff33e7ede 100644
--- a/libdw/ChangeLog
+++ b/libdw/ChangeLog
@@ -1,3 +1,9 @@
+2009-04-28  Petr Machata  <pmachata@redhat.com>
+
+	* libdwP.h (__libdw_read_length_inc, __libdw_read_length):
+	New internal functions.
+	* dwarf_readhooks.c: Implement the above.
+
 2009-04-23  Petr Machata  <pmachata@redhat.com>
 
 	* dwarf_formaddr.c (dwarf_formaddr): Call __libdw_read_* instead
diff --git a/libdw/libdwP.h b/libdw/libdwP.h
index 416769115..4a1e4b2bf 100644
--- a/libdw/libdwP.h
+++ b/libdw/libdwP.h
@@ -448,6 +448,11 @@ int __libdw_relocate_offset (Dwarf *dbg,
 			     int width, Dwarf_Off *val)
   internal_function;
 
+int __libdw_relocate_length (Dwarf *dbg,
+			     int sec_index, uintptr_t addr,
+			     int width, Dwarf_Addr *val)
+  internal_function;
+
 #define READ_AND_RELOCATE(RELOC_HOOK)					\
   {									\
     int status;								\
@@ -488,6 +493,14 @@ __libdw_read_offset_inc (Dwarf *dbg,
   READ_AND_RELOCATE (__libdw_relocate_offset)
 }
 
+static inline int
+__libdw_read_length_inc (Dwarf *dbg,
+			 int sec_index, unsigned char **addr,
+			 int width, Dwarf_Addr *ret)
+{
+  READ_AND_RELOCATE (__libdw_relocate_length)
+}
+
 #undef READ_AND_RELOCATE
 
 static inline int
@@ -508,6 +521,15 @@ __libdw_read_offset (Dwarf *dbg,
 				  width, ret);
 }
 
+static inline int
+__libdw_read_length (Dwarf *dbg,
+		     int sec_index, const unsigned char *addr,
+		     int width, Dwarf_Word *ret)
+{
+  return __libdw_read_length_inc (dbg, sec_index, (unsigned char **)&addr,
+				  width, ret);
+}
+
 #define ADDR_ESCAPE(width) \
   (width == 8 ? (Elf64_Addr)-1 : (Elf64_Addr)(Elf32_Addr)-1)
 
diff --git a/libdw/libdw_readhooks.c b/libdw/libdw_readhooks.c
index 404f12aa7..93c986429 100644
--- a/libdw/libdw_readhooks.c
+++ b/libdw/libdw_readhooks.c
@@ -72,3 +72,13 @@ __libdw_relocate_offset (Dwarf *dbg __attribute__ ((unused)),
 {
   return 0;
 }
+
+internal_function int
+__libdw_relocate_length (Dwarf *dbg __attribute__ ((unused)),
+			 int sec_index __attribute__ ((unused)),
+			 uintptr_t addr __attribute__ ((unused)),
+			 int width __attribute__ ((unused)),
+			 Dwarf_Addr *val __attribute__ ((unused)))
+{
+  return 0;
+}