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patches/gcc/4.3.3/110-trampolinewarn.patch
author Cody Schafer <dev@codyps.com>
Fri May 09 19:13:49 2014 -0700 (2014-05-09)
changeset 3312 4876ff97e039
permissions -rw-r--r--
cc/gcc: allow CC_EXTRA_CONFIG_ARRAY on baremetal

The final bare-metal compiler is built using the core backend.
Currently the core uses the CC_CORE_EXTRA_CONFIG_ARRAY variable.

While this works as supposed to, this can leave the user puzzled
in the menuconfig, since all he can see is the core options, not
the final options.

Only show the core options if any of the core passes are needed,
and use the final options in the core-backend if we're issuing
the bare-metal compiler.

Signed-off-by: Cody P Schafer <dev@codyps.com>
[yann.morin.1998@free.fr: hide core options if no core pass needed;
use final option in core backend if issuing the bare-metal compiler]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-Id: <22181e546ba746202489.1399688067@localhost>
Patchwork-Id: 347586 
     1 Original patch from: ../4.3.2/110-trampolinewarn.patch

     2 

     3 -= BEGIN original header =-

     4 Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.1/gentoo/00_all_gcc-trampolinewarn.patch

     5 	This trivial patch causes gcc to emit a warning whenever

     6 	it generates a trampoline.  These are otherwise hard to

     7 	locate.  It is rigged to default ON - to have it default

     8 	to OFF remove the text 'Init(1)' from the common.opt

     9 	patch, leaving just 'Common Var(warn_trampolines)'.

    10 	Kevin F. Quinn <kevquinn@gentoo.org> 17 Jan 2006

    11 

    12 -= END original header =-

    13 

    14 diff -durN gcc-4.3.3.orig/gcc/builtins.c gcc-4.3.3/gcc/builtins.c

    15 --- gcc-4.3.3.orig/gcc/builtins.c	2008-08-19 18:37:13.000000000 +0200

    16 +++ gcc-4.3.3/gcc/builtins.c	2009-01-27 22:19:12.000000000 +0100

    17 @@ -5662,6 +5662,9 @@

    18    trampolines_created = 1;

    19    INITIALIZE_TRAMPOLINE (r_tramp, r_func, r_chain);

    20  

    21 +  if (warn_trampolines)

    22 +    warning (OPT_Wtrampolines, "generating trampoline in object (requires executable stack)");

    23 +

    24    return const0_rtx;

    25  }

    26  

    27 diff -durN gcc-4.3.3.orig/gcc/common.opt gcc-4.3.3/gcc/common.opt

    28 --- gcc-4.3.3.orig/gcc/common.opt	2008-01-22 15:11:44.000000000 +0100

    29 +++ gcc-4.3.3/gcc/common.opt	2009-01-27 22:19:12.000000000 +0100

    30 @@ -182,6 +182,10 @@

    31  Common Var(warn_system_headers) Warning

    32  Do not suppress warnings from system headers

    33  

    34 +Wtrampolines

    35 +Common Var(warn_trampolines) Init(1)

    36 +Warn whenever a trampoline is generated

    37 +

    38  Wuninitialized

    39  Common Var(warn_uninitialized) Warning

    40  Warn about uninitialized automatic variables
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