gdb: factor out debug_prefixed_printf_cond

The same pattern happens often to define a "debug_printf" macro:

    #define displaced_debug_printf(fmt, ...) \
      do \
        { \
          if (debug_displaced) \
    	debug_prefixed_printf ("displaced", __func__, fmt, ##__VA_ARGS__); \
        } \
      while (0)

Move this pattern behind a helper macro, debug_prefixed_printf_cond and
update the existing macros to use it.

gdb/ChangeLog:

	* displaced-stepping.h (displaced_debug_printf): Use
	debug_prefixed_printf_cond.
	* dwarf2/read.c (dwarf_read_debug_printf): Likewise.
	(dwarf_read_debug_printf_v): Likewise.
	* infrun.h (infrun_debug_printf): Likewise.
	* linux-nat.c (linux_nat_debug_printf): Likewise.

gdbsupport/ChangeLog:

	* common-debug.h (debug_prefixed_printf_cond): New.
	* event-loop.h (event_loop_debug_printf): Use
	debug_prefixed_printf_cond.

Change-Id: I1ff48b98b8d1cc405d1c7e8da8ceadf4e3a17f99

1 files changed, 4 insertions, 12 deletions

diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
index 2bf1453..91f669b 100644
--- a/gdb/dwarf2/read.c
+++ b/gdb/dwarf2/read.c
@@ -96,22 +96,14 @@ static unsigned int dwarf_read_debug = 0;
 /* Print a "dwarf-read" debug statement if dwarf_read_debug is >= 1.  */
 
 #define dwarf_read_debug_printf(fmt, ...) \
-  do \
-    { \
-      if (dwarf_read_debug >= 1) \
-	debug_prefixed_printf ("dwarf-read", __func__, fmt, ##__VA_ARGS__); \
-    } \
-  while (0)
+  debug_prefixed_printf_cond (dwarf_read_debug >= 1, "dwarf-read", fmt, \
+			      ##__VA_ARGS__)
 
 /* Print a "dwarf-read" debug statement if dwarf_read_debug is >= 2.  */
 
 #define dwarf_read_debug_printf_v(fmt, ...) \
-  do \
-    { \
-      if (dwarf_read_debug >= 2) \
-	debug_prefixed_printf ("dwarf-read", __func__, fmt, ##__VA_ARGS__); \
-    } \
-  while (0)
+  debug_prefixed_printf_cond (dwarf_read_debug >= 2, "dwarf-read", fmt, \
+			      ##__VA_ARGS__)
 
 /* When non-zero, dump DIEs after they are read in.  */
 static unsigned int dwarf_die_debug = 0;