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Re: GCC and Modules

To: Marc Karasek <marc_karasek@ivivity.com>
Subject: Re: GCC and Modules
From: "H . J . Lu" <hjl@lucon.org>
Date: Tue, 24 Jul 2001 13:25:34 -0700
Cc: linux-mips@oss.sgi.com
In-reply-to: <995995907.1331.5.camel@localhost.localdomain>; from marc_karasek@ivivity.com on Tue, Jul 24, 2001 at 01:31:41PM -0400
References: <25369470B6F0D41194820002B328BDD27D2E@ATLOPS> <20010724085544.A20610@lucon.org> <995995907.1331.5.camel@localhost.localdomain>
Sender: owner-linux-mips@oss.sgi.com
User-agent: Mutt/1.2.5i
On Tue, Jul 24, 2001 at 01:31:41PM -0400, Marc Karasek wrote:
> The way to see this bug is just try to compile the MIPS kernel (either
> 2.4.1 or 2.4.3) as follows:
> 
> 1) make distclean
> 2) copy linux/arch/mips/defconfig-malta linux/.config
> 3) make oldconfig
> 4) make menuconfig
> 5) change the endianess from little to big
> 6) make dep 
> 7) make zImage 
> 

That is a kernel bug. The code only works on littl endian by accident
Here is a patch.


H.J.
--- arch/mips/mips-boards/generic/time.c.int64  Tue Jul 24 13:21:21 2001
+++ arch/mips/mips-boards/generic/time.c        Tue Jul 24 13:22:02 2001
@@ -275,7 +275,7 @@ void __init time_init(void)
 
 /* This is for machines which generate the exact clock. */
 #define USECS_PER_JIFFY (1000000/HZ)
-#define USECS_PER_JIFFY_FRAC (0x100000000*1000000/HZ&0xffffffff)
+#define USECS_PER_JIFFY_FRAC ((long) (0x100000000*1000000/HZ&0xffffffff))
 
 /* Cycle counter value at the previous timer interrupt.. */
 

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