[parisc-linux] Today's boot experience on a 735

[John David Anglin]

> > The _end symbol is not a reliable indicator of where
> > the kernel's memory ends.  And the hpux
> > bootloader doesn't provide the SOM header from whence this could
> > theoretically be calculated.  I haven't tried out the _end trick
> > posted last week, but it looks like it'll work (don't call the symbol
> > _end if you try it).  As long as your kernel links, the guess is
> > probably OK for now.
> 
> Ok, I see the problem now.  The section $DLT$ contains a bunch of
> undefined common symbols as well as _end.  For example,
> 
> boot_cpu_data       |       416|undef |common |$CODE$
> 
> The _end defined by the linker is the end of the bss section but not
> the end of last section of the kernel.

Ok, this is a programing problem.  For objects that don't need external
linkage, declare them static.  For those that do, initialize them!  This
will eliminate those pesky common variables.  For example,

--- setup.c.orig	Fri Nov 12 18:23:50 1999
+++ setup.c	Tue Nov 16 17:46:36 1999
@@ -57,14 +57,14 @@
 
 
 #define COMMAND_LINE_SIZE 1024
-char 	saved_command_line[COMMAND_LINE_SIZE];
+char 	saved_command_line[COMMAND_LINE_SIZE] = {};
 
 #define pdc_wrapper(args...) ({				\
 	real_routine = (void *)PAGE0->mem_pdc;		\
 	real_call(##args);				\
 })
 
-struct cpuinfo_parisc boot_cpu_data;
+struct cpuinfo_parisc boot_cpu_data = {};
 
 extern __initfunc(unsigned long hp700fb_init(unsigned long mem_start));
 extern	void dino_init(void);
@@ -73,7 +73,7 @@
 #endif
 extern void do_inventory(void);
 
-PDC_CALL pdc;
+PDC_CALL pdc = {};
 
 
 void __xchg_called_with_bad_pointer(void)

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I've rebuilt cross compiling rpms for parisc-linux, and am uploading them
to ftp://sod.res.cmu.edu/pub/parisc/tools .

This fixes some problems with program names and locations. This will help
in actually getting hilo to cross compile.

The files uploaded are:
binutils-x-hppa-2.9.1-4.i386.rpm    egcs-x-hppa-linux-1.1.1-3.i386.rpm
binutils-x-hppa-2.9.1-4.src.rpm     egcs-x-hppa-linux-1.1.1-3.src.rpm


- Alex

-- 
Alex deVries <puffin@redhat.com>     
Red Hat Contrib Net maintainer          
Ottawa, Canada  
HPPA/Linux Porting Team


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