Add new dwarf_cfi_validate_fde call.

1 files changed, 14 insertions, 0 deletions

diff --git a/libdw/libdw.h b/libdw/libdw.h
index 252361fc..75998e1a 100644
--- a/libdw/libdw.h
+++ b/libdw/libdw.h
@@ -799,6 +799,20 @@ extern int dwarf_frame_register (Dwarf_Frame *frame, int regno,
 				 Dwarf_Op **ops, size_t *nops)
   __nonnull_attribute__ (3, 4, 5);
 
+/* Look up the FDE described at OFFSET bytes into the CFI section,
+   and validate it by decoding the FDE fully.  Returns -1 for errors.
+   On success, returns the maximum DWARF register number that this
+   FDE describes and fills *START and *END with the PC address range
+   this FDE covers, *SIGNALP with whether this is a signal frame, and
+   *ENCODING with the pointer encoding used in this FDE.  This is not
+   necessarily the exact encoding byte given in the augmentation string;
+   it will describe the exact address size used (DW_EH_PE_udata4 or
+   DW_EH_PE_udata8) if a DW_EH_PE_absptr encoding is being used.  */
+extern int dwarf_cfi_validate_fde (Dwarf_CFI *cache,
+				   Dwarf_Off offset,
+				   Dwarf_Addr *start, Dwarf_Addr *end,
+				   bool *signalp, uint8_t *encoding);
+
 
 /* Return error code of last failing function call.  This value is kept
    separately for each thread.  */