patches/gcc/4.4.5/110-trampolinewarn.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Jul 17 18:29:35 2011 +0200 (2011-07-17)
changeset 2926 d304c8a7bfa8
permissions -rw-r--r--
binutils: split binutils to backend/frontend, a-la cc_core

Move the actual binutils code to a backend function that builds the
required combo of build/host/target as requested by a frontend.

This split is currently a no-op, but is required for the upcoming
canadian-cross rework, where we'll be needing to build two binutils,
one for build/build/target, and one for build/host/target.

This applies to the three binutils:
- GNU binutils
- elf2flt
- sstrip

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
yann@2149
     1
diff -durN gcc-4.4.5.orig/gcc/builtins.c gcc-4.4.5/gcc/builtins.c
yann@2149
     2
--- gcc-4.4.5.orig/gcc/builtins.c	2010-03-22 16:00:20.000000000 +0100
yann@2149
     3
+++ gcc-4.4.5/gcc/builtins.c	2010-10-09 22:57:58.000000000 +0200
yann@2149
     4
@@ -5783,6 +5783,9 @@
yann@2149
     5
   trampolines_created = 1;
yann@2149
     6
   INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);
yann@2149
     7
 
yann@2149
     8
+  if (warn_trampolines)
yann@2149
     9
+    warning (OPT_Wtrampolines, "generating trampoline in object (requires executable stack)");
yann@2149
    10
+
yann@2149
    11
   return const0_rtx;
yann@2149
    12
 }
yann@2149
    13
 
yann@2149
    14
diff -durN gcc-4.4.5.orig/gcc/common.opt gcc-4.4.5/gcc/common.opt
yann@2149
    15
--- gcc-4.4.5.orig/gcc/common.opt	2009-03-28 18:28:45.000000000 +0100
yann@2149
    16
+++ gcc-4.4.5/gcc/common.opt	2010-10-09 22:57:58.000000000 +0200
yann@2149
    17
@@ -197,6 +197,10 @@
yann@2149
    18
 Common Var(warn_type_limits) Init(-1) Warning
yann@2149
    19
 Warn if a comparison is always true or always false due to the limited range of the data type
yann@2149
    20
 
yann@2149
    21
+Wtrampolines
yann@2149
    22
+Common Var(warn_trampolines) Init(1)
yann@2149
    23
+Warn whenever a trampoline is generated
yann@2149
    24
+
yann@2149
    25
 Wuninitialized
yann@2149
    26
 Common Var(warn_uninitialized) Warning
yann@2149
    27
 Warn about uninitialized automatic variables