Hi Ralf,
On Mon, 24 Feb 2003 21:21:46 +0100
Ralf Baechle <ralf@linux-mips.org> wrote:
> On Mon, Feb 24, 2003 at 09:07:55PM +0900, Yoichi Yuasa wrote:
>
> > We need to change -mcpu in order to use an instruction peculiar to VR4100.
> > The option of -mcpu changes with versions of binutils.
> >
> > If it is limited to some versions, I can be corresponded using check_gcc.
> > Can you tell me some versions of binutils?
>
> Binutils starting with about 2.10 should support -mcpu=4100.
I checked about some binutils.
binutils -mcpu option for VR4100 series
2.10:
* VR4100
* vr4100
* 4100
* mips64vr4100
* r4100
2.11:
2.12:
2.13:
* VR4100
* 4100
* mips64vr4100
* r4100
In addition for the VR4100 series, there is an -m4100 option.
As for us, it is best to use the following option.
GCCFLAGS += -mcpu=r4100 -mips2 -Wa,-m4100,--trap
Would you apply this patch to CVS?
Thanks,
Yoichi
diff -aruN --exclude=CVS --exclude=.cvsignore linux.orig/arch/mips/Makefile linux/arch/mips/Makefile
--- linux.orig/arch/mips/Makefile Fri Feb 21 03:53:37 2003
+++ linux/arch/mips/Makefile Tue Feb 25 12:27:57 2003
@@ -66,7 +66,7 @@
GCCFLAGS += -mcpu=r4300 -mips2 -Wa,--trap
endif
ifdef CONFIG_CPU_VR41XX
-GCCFLAGS += -mcpu=r4600 -mips2 -Wa,--trap
+GCCFLAGS += -mcpu=r4100 -mips2 -Wa,-m4100,--trap
endif
ifdef CONFIG_CPU_R4X00
GCCFLAGS += -mcpu=r4600 -mips2 -Wa,--trap
diff -aruN --exclude=CVS --exclude=.cvsignore linux.orig/arch/mips/Makefile linux/arch/mips/Makefile
--- linux.orig/arch/mips/Makefile Fri Jan 24 10:26:58 2003
+++ linux/arch/mips/Makefile Tue Feb 25 12:40:23 2003
@@ -57,7 +57,7 @@
cflags-$(CONFIG_CPU_TX39XX) += -mcpu=r3000 -mips1
cflags-$(CONFIG_CPU_R6000) += -mcpu=r6000 -mips2 -Wa,--trap
cflags-$(CONFIG_CPU_R4300) += -mcpu=r4300 -mips2 -Wa,--trap
-cflags-$(CONFIG_CPU_VR41XX) += -mcpu=r4600 -mips2 -Wa,--trap
+cflags-$(CONFIG_CPU_VR41XX) += -mcpu=r4100 -mips2 -Wa,-m4100,--trap
cflags-$(CONFIG_CPU_R4X00) += -mcpu=r4600 -mips2 -Wa,--trap
cflags-$(CONFIG_CPU_TX49XX) += -mcpu=r4600 -mips2 -Wa,--trap
cflags-$(CONFIG_CPU_MIPS32) += -mcpu=r4600 -mips2 -Wa,--trap
