[gcc r12-3395] ctfc: externalize ctf_dtd_lookup

[gcc r12-3395] ctfc: externalize ctf_dtd_lookup

[David Faust]

https://gcc.gnu.org/g:44e4ed6a3cb9039c1251bec2d68158b68fe3fad8

commit r12-3395-g44e4ed6a3cb9039c1251bec2d68158b68fe3fad8
Author: David Faust <david.faust@oracle.com>
Date:   Tue Aug 3 10:00:42 2021 -0700

    ctfc: externalize ctf_dtd_lookup
    
    Expose the function ctf_dtd_lookup, so that it can be used by the BPF
    CO-RE machinery. The function is no longer static, and an extern
    prototype is added in ctfc.h.
    
    gcc/ChangeLog:
    
            * ctfc.c (ctf_dtd_lookup): Function is no longer static.
            * ctfc.h: Analogous change.

Diff:
---
 gcc/ctfc.c | 2 +-
 gcc/ctfc.h | 5 ++++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/gcc/ctfc.c b/gcc/ctfc.c
index 1a6ddb80829..db6ba030301 100644
--- a/gcc/ctfc.c
+++ b/gcc/ctfc.c
@@ -132,7 +132,7 @@ ctf_dtd_insert (ctf_container_ref ctfc, ctf_dtdef_ref dtd)
 
 /* Lookup CTF type given a DWARF die for the type.  */
 
-static ctf_dtdef_ref
+ctf_dtdef_ref
 ctf_dtd_lookup (const ctf_container_ref ctfc, const dw_die_ref type)
 {
   ctf_dtdef_t entry;
diff --git a/gcc/ctfc.h b/gcc/ctfc.h
index 39c527074b5..825570d807e 100644
--- a/gcc/ctfc.h
+++ b/gcc/ctfc.h
@@ -388,7 +388,10 @@ extern bool ctf_type_exists (ctf_container_ref, dw_die_ref, ctf_id_t *);
 
 extern void ctf_add_cuname (ctf_container_ref, const char *);
 
-extern ctf_dvdef_ref ctf_dvd_lookup (const ctf_container_ref, dw_die_ref);
+extern ctf_dtdef_ref ctf_dtd_lookup (const ctf_container_ref ctfc,
+				     dw_die_ref die);
+extern ctf_dvdef_ref ctf_dvd_lookup (const ctf_container_ref ctfc,
+				     dw_die_ref die);
 
 extern const char * ctf_add_string (ctf_container_ref, const char *,
 				    uint32_t *, int);