diff mbox

Add debug_function_to_file

Message ID 56C5E69A.20000@mentor.com
State New
Headers show

Commit Message

Tom de Vries Feb. 18, 2016, 3:43 p.m. UTC 
On 18/02/16 16:27, Richard Biener wrote:
>>>> I would be nice if we could avoid the ${1,2,3} printouts and value
>>>> >>> >history
>>>> >>> >assignments, but I'm not sure how to do that.
>>>> >>> >
>>
>>
>>Using gdb.parse_and_eval does the trick.
>>

This updated version uses gdb.parse_and_eval, and adds error handling.

Thanks,
- Tom
diff mbox

Patch

Add debug-function-to-file to gdbhooks.py

---
 gcc/gdbhooks.py | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/gcc/gdbhooks.py b/gcc/gdbhooks.py
index 0d5cc97..c19e823 100644
--- a/gcc/gdbhooks.py
+++ b/gcc/gdbhooks.py
@@ -589,4 +589,36 @@  class BreakOnPass(gdb.Command):
 
 BreakOnPass()
 
+class debug_function_to_file(gdb.Command):
+    def __init__(self):
+        gdb.Command.__init__(self, 'debug-function-to-file', gdb.COMMAND_USER)
+
+    def invoke(self, arg, from_tty):
+        # Find function
+        fn = gdb.parse_and_eval("cfun ? cfun->decl : current_function_decl")
+        if fn == 0:
+            print ("Could not find current function")
+            return
+
+        # Open file
+        file = arg
+        fp = gdb.parse_and_eval("fopen (%s, \"w\")" % file)
+        if fp == 0:
+            print ("Could not open file: %s" % file)
+            return
+
+        # Set flags
+        flags = 0
+
+        # Dump function to file
+        dumpargs = "(tree)%u, (FILE *)%u, %u" % (fn, fp, flags)
+        _ = gdb.parse_and_eval("dump_function_to_file (%s)" % dumpargs)
+
+        # Close file
+        ret = gdb.parse_and_eval("fclose ((FILE *)%u)" % fp)
+        if ret != 0:
+            print ("Could not close file: %s" % file)
+
+debug_function_to_file()
+
 print('Successfully loaded GDB hooks for GCC')