pr21623-workaround.patch

linux下编译交叉工具链的工具源码

Message-ID: <[e-mail]>
Date: Thu, 06 Oct 2005 21:11:29 +0200
From: Alexander Sieb <[e-mail]>
To: [e-mail]
Subject: Crosstool sh4-linux-gcc-4.0.2-glibc-2.3.5 patches

Hi,

attached you find the files I needed to add to crosstool-0.38
in order to build a sh4-linux gcc-4.0.2-glibc-2.3.5 tool chain.

Files attached:

sh4-gcc4.dat:
        * gcc4 needs --with-multilib-list=m4,m4-nofpu otherwise a linux
        kernel won't build as it uses the -m4-nofpu option.

gcc-pr21623.patch:
        * Kaz Kojima provided a patch [really, a workaround -dank] for http://gcc.gnu.org/PR21623

glibc-2.3.5-sh-memset.patch:
        * A patch for glibc-2.3.5 which corrects memset. From SUGIOKA Toshinobu.
        See content for rationale.

-- snip --

-- Here's patch 1 of 2, plus URLs showing where it is in CVS --

[http://gcc.gnu.org/ml/gcc-cvs/2005-10/msg00081.html]

2005-09-30  Kaz Kojima  <[e-mail]>

	* config/sh/sh.c (sh_register_move_cost): Add case for moving
	from T_REGS to FP register class.

[http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/sh/sh.c.diff?cvsroot=gcc&r1=1.347&r2=1.348]

RCS file: /cvs/gcc/gcc/gcc/config/sh/sh.c,v
retrieving revision 1.347
retrieving revision 1.348
diff -u -r1.347 -r1.348
--- gcc/gcc/config/sh/sh.c	2005/09/05 12:45:22	1.347
+++ gcc/gcc/config/sh/sh.c	2005/10/03 22:07:08	1.348
@@ -9491,6 +9491,9 @@ sh_register_move_cost (enum machine_mode
       && REGCLASS_HAS_FP_REG (dstclass))
     return 4;
 
+  if (REGCLASS_HAS_FP_REG (dstclass) && srcclass == T_REGS)
+    return ((TARGET_HARD_SH4 && !optimize_size) ? 10 : 7);
+
   if ((REGCLASS_HAS_FP_REG (dstclass) && srcclass == MAC_REGS)
       || (dstclass == MAC_REGS && REGCLASS_HAS_FP_REG (srcclass)))
     return 9;