[PATCH] btf: print string position as comment for validation and testing purposes.

[Cupertino Miranda]

Hi everyone,

This patch adds a comment to the BTF strings regarding their position
within the section. This is useful for assembly inspection purposes.

Regards,
Cupertino

When using -dA, this function was only printing as comment btf_string or
btf_aux_string.
This patch changes the comment to also include the position of the
string within the section in hexadecimal format.

gcc/ChangeLog:
        * btfout.cc (output_btf_strs): Changed.
---
 gcc/btfout.cc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/gcc/btfout.cc b/gcc/btfout.cc
index db4f1084f85c..04218adc9e66 100644
--- a/gcc/btfout.cc
+++ b/gcc/btfout.cc
@@ -1081,17 +1081,20 @@ static void
 output_btf_strs (ctf_container_ref ctfc)
 {
   ctf_string_t * ctf_string = ctfc->ctfc_strtable.ctstab_head;
+  static int str_pos = 0;
 
   while (ctf_string)
     {
-      dw2_asm_output_nstring (ctf_string->cts_str, -1, "btf_string");
+      dw2_asm_output_nstring (ctf_string->cts_str, -1, "btf_string, str_pos = 
0x%x", str_pos);
+      str_pos += strlen(ctf_string->cts_str) + 1;
       ctf_string = ctf_string->cts_next;
     }
 
   ctf_string = ctfc->ctfc_aux_strtable.ctstab_head;
   while (ctf_string)
     {
-      dw2_asm_output_nstring (ctf_string->cts_str, -1, "btf_aux_string");
+      dw2_asm_output_nstring (ctf_string->cts_str, -1, "btf_aux_string, 
str_pos = 0x%x", str_pos);
+      str_pos += strlen(ctf_string->cts_str) + 1;
       ctf_string = ctf_string->cts_next;
     }
 }
-- 
2.30.2