u-boot-brain/arch/powerpc/cpu/74xx_7xx/config.mk

#
# (C) Copyright 2001
# Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
#
# SPDX-License-Identifier:	GPL-2.0+
#

PLATFORM_RELFLAGS += -meabi

PLATFORM_CPPFLAGS += -DCONFIG_74xx_7xx -ffixed-r2 -mstring
Initial revision 2002-09-01 07:22:33 +09:00			`#`
			`# (C) Copyright 2001`
			`# Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.`
			`#`
Add GPL-2.0+ SPDX-License-Identifier to source files Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com> 2013-07-08 16:37:19 +09:00			`# SPDX-License-Identifier: GPL-2.0+`
Initial revision 2002-09-01 07:22:33 +09:00			`#`

PowerPC: Move -fPIC flag to common place The -fPIC flag belongs with -mrelocatable, move it there. Also change -fPIC to -fpic as this produces smaller binaries. However, currently -mrelocatable promotes -fpic to -fPIC, a fix for this is in upcoming gcc 4.6 or you can apply this small patch to gcc: diff --git a/gcc/config/rs6000/sysv4.h b/gcc/config/rs6000/sysv4.h index 8da8410..e4b8280 100644 --- a/gcc/config/rs6000/sysv4.h +++ b/gcc/config/rs6000/sysv4.h @@ -227,7 +227,8 @@ do { \ } \ \ else if (TARGET_RELOCATABLE) \ - flag_pic = 2; \ + if (!flag_pic) \ + flag_pic = 2; \ } while (0) #ifndef RS6000_BI_ARCH -- Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> 2010-12-06 22:36:46 +09:00			`PLATFORM_RELFLAGS += -meabi`
Initial revision 2002-09-01 07:22:33 +09:00
PPC: Use r2 instead of r29 as global data pointer R29 was an unlucky choice as with recent toolchains (gcc-4.2.x) gcc will refuse to use load/store multiple insns; instead, it issues a list of simple load/store instructions upon function entry and exit, resulting in bigger code size, which in turn makes the build for a few boards fail. Use r2 instead. Signed-off-by: Wolfgang Denk <wd@denx.de> 2008-02-15 06:43:22 +09:00			`PLATFORM_CPPFLAGS += -DCONFIG_74xx_7xx -ffixed-r2 -mstring`