From d214e5e79e38b18bc3786b3e8ba0e55fdbba294b Mon Sep 17 00:00:00 2001
From: Thomas Schwinge <thomas@codesourcery.com>
Date: Mon, 20 Apr 2015 00:22:32 +0200
Subject: [PATCH] [GDB] Hurd: Simplify the reply_mig_hack.awk script.

	gdb/
	* reply_mig_hack.awk: Don't bother to declare an intermediate
	function pointer variable.

... allowing us to simplify the parsing a little bit.  And, instead of
"warning: initialization from incompatible pointer type", we now get "warning:
function called through a non-compatible type".  Oh well.
---
 gdb/ChangeLog          |  5 +++++
 gdb/reply_mig_hack.awk | 25 ++++++++++++++++---------
 2 files changed, 21 insertions(+), 9 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 69e5c4828c8..093686f6fa9 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2015-04-20  Thomas Schwinge  <thomas@codesourcery.com>
+
+	* reply_mig_hack.awk: Don't bother to declare an intermediate
+	function pointer variable.
+
 2015-04-17  Doug Evans  <dje@google.com>
 
 	* solib-svr4.c (svr4_exec_displacement): Rename outer "displacement"
diff --git a/gdb/reply_mig_hack.awk b/gdb/reply_mig_hack.awk
index 2c2a30a50d4..7eab5042f4c 100644
--- a/gdb/reply_mig_hack.awk
+++ b/gdb/reply_mig_hack.awk
@@ -60,7 +60,7 @@ parse_phase == 3 && /}/ {
   print; next;
 }
 
-parse_phase == 3 {
+parse_phase == 3 && num_args == 0 {
   # The type field for an argument.
   arg_type_code_name[num_args] = $2;
   sub (/;$/, "", arg_type_code_name[num_args]) # Get rid of the semi-colon
@@ -68,11 +68,22 @@ parse_phase == 3 {
   print; next;
 }
 
+parse_phase == 3 && num_args == 1 {
+  # We've got more than one argument (but we don't care what it is).
+  num_args++;
+  print; next;
+}
+
+parse_phase == 3 {
+  # We've know everything we need; now just wait for the end of the Request
+  # struct.
+  print; next;
+}
+
 parse_phase == 4 {
   # The value field for an argument.
   arg_name[num_args] = $2;
   sub (/;$/, "", arg_name[num_args]) # Get rid of the semi-colon
-  arg_type[num_args] = $1;
   num_args++;
   parse_phase = 3;
   print; next;
@@ -109,15 +120,11 @@ parse_phase == 5 && /^#if[ \t]TypeCheck/ {
   print "\t    && In0P->" arg_name[0] " != 0)";
   print "\t  /* Error return, only the error code argument is passed.  */";
   print "\t  {";
-  # Force the function into a type that only takes the first two args, via
-  # the temp variable SFUN (is there another way to correctly do this cast?).
+  # Force the function user_function_name into a type that only takes the first
+  # two arguments.
   # This is possibly bogus, but easier than supplying bogus values for all
   # the other args (we can't just pass 0 for them, as they might not be scalar).
-  printf ("\t    kern_return_t (*sfun)(mach_port_t");
-  for (i = 0; i < num_args; i++)
-    printf (", %s", arg_type[i]);
-  printf (") = %s;\n", user_function_name);
-  print "\t    OutP->RetCode = (*(kern_return_t (*)(mach_port_t, kern_return_t))sfun) (In0P->Head.msgh_request_port, In0P->" arg_name[0] ");";
+  print "\t    OutP->RetCode = (*(kern_return_t (*)(mach_port_t, kern_return_t)) " user_function_name ") (In0P->Head.msgh_request_port, In0P->" arg_name[0] ");";
   print "\t    return;";
   print "\t  }";
   print "";
-- 
2.30.2