patches/gcc/4.3.1/100-alpha-mieee-default.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Wed Sep 09 00:02:01 2009 +0200 (2009-09-09)
changeset 1525 4647e6fb994a
parent 552 4edbcdb17e3d
permissions -rw-r--r--
gcc: add patch to fix EABI for armv4t

As pointed out by Martin GUY, gcc incorrectly generates armv5t
instrcutions for EABI, even for cores that are an armv4t.
The new patch (for the 4.3 series) fixes the problem by downgrading
the default CPU for EABI to being an armv4t core.
yann@552
     1
Original patch from gentoo: gentoo/src/patchsets/gcc/4.3.1/gentoo/00_all_gcc-4.1-alpha-mieee-default.patch
yann@552
     2
Set the default behavior on alpha to use -mieee since the large majority of
yann@552
     3
time we want this (bad/weird things can happen with packages built without
yann@552
     4
-mieee).
yann@552
     5
yann@552
     6
To satisfy those people who may not want -mieee forced on them all the time,
yann@552
     7
we also provide -mno-ieee.
yann@552
     8
yann@552
     9
Patch by Mike Frysinger <vapier@gentoo.org>
yann@552
    10
yann@552
    11
diff -durN gcc-4.3.1.orig/gcc/config/alpha/alpha.h gcc-4.3.1/gcc/config/alpha/alpha.h
yann@552
    12
--- gcc-4.3.1.orig/gcc/config/alpha/alpha.h	2007-12-06 14:25:37.000000000 +0100
yann@552
    13
+++ gcc-4.3.1/gcc/config/alpha/alpha.h	2008-06-10 14:56:36.000000000 +0200
yann@552
    14
@@ -95,6 +95,8 @@
yann@552
    15
   while (0)
yann@552
    16
 #endif
yann@552
    17
 
yann@552
    18
+#define CPP_SPEC "%{!no-ieee:-mieee}"
yann@552
    19
+
yann@552
    20
 #define WORD_SWITCH_TAKES_ARG(STR)		\
yann@552
    21
  (!strcmp (STR, "rpath") || DEFAULT_WORD_SWITCH_TAKES_ARG(STR))
yann@552
    22
 
yann@552
    23
diff -durN gcc-4.3.1.orig/gcc/config/alpha/alpha.opt gcc-4.3.1/gcc/config/alpha/alpha.opt
yann@552
    24
--- gcc-4.3.1.orig/gcc/config/alpha/alpha.opt	2007-08-02 12:49:31.000000000 +0200
yann@552
    25
+++ gcc-4.3.1/gcc/config/alpha/alpha.opt	2008-06-10 14:56:36.000000000 +0200
yann@552
    26
@@ -39,7 +39,7 @@
yann@552
    27
 Request IEEE-conformant math library routines (OSF/1)
yann@552
    28
 
yann@552
    29
 mieee
yann@552
    30
-Target Report RejectNegative Mask(IEEE)
yann@552
    31
+Target Report Mask(IEEE)
yann@552
    32
 Emit IEEE-conformant code, without inexact exceptions
yann@552
    33
 
yann@552
    34
 mieee-with-inexact