gdb/buildsym: Line record use a record flag

Currently when recording a line entry (with
buildsym_compunit::record_line), a boolean argument argument is used to
indicate that the is_stmt flag should be set for this particular record.
As a later commit will add support for new flags, instead of adding a
parameter to record_line for each possible flag, transform the current
is_stmt parameter into a enum flag.  This flags parameter will allow
greater flexibility in future commits.

This enum flags type is not propagated into the linetable_entry type as
this would require a lot of changes across the codebase for no practical
gain (it currently uses a bitfield where each interesting flag only
occupy 1 bit in the structure).

Tested on x86_64-linux, no regression observed.

Change-Id: I5d061fa67bdb34918742505ff983d37453839d6a

1 files changed, 11 insertions, 1 deletions

diff --git a/gdb/buildsym.h b/gdb/buildsym.h
index fa774db..00e5778 100644
--- a/gdb/buildsym.h
+++ b/gdb/buildsym.h
@@ -110,6 +110,16 @@ struct context_stack
 
   };
 
+/* Flags associated with a linetable entry.  */
+
+enum linetable_entry_flag : unsigned
+{
+  /* Indicates this PC is a good location to place a breakpoint at LINE.  */
+  LEF_IS_STMT = 1 << 1,
+};
+DEF_ENUM_FLAGS_TYPE (enum linetable_entry_flag, linetable_entry_flags);
+
+
 /* Buildsym's counterpart to struct compunit_symtab.  */
 
 struct buildsym_compunit
@@ -188,7 +198,7 @@ struct buildsym_compunit
   const char *pop_subfile ();
 
   void record_line (struct subfile *subfile, int line, CORE_ADDR pc,
-		    bool is_stmt);
+		    linetable_entry_flags flags);
 
   struct compunit_symtab *get_compunit_symtab ()
   {