You propose:
----------------------
diff -uNr linux-2.5.8.boot.heap/arch/i386/boot/compressed/head.S \
linux-2.5.8.boot.clean_32bit_entries/arch/i386/boot/compressed/head.S
--- linux-2.5.8.boot.heap/arch/i386/boot/compressed/head.S Wed Jul 5
13:03:12 2000
+++ linux-2.5.8.boot.clean_32bit_entries/arch/i386/boot/compressed/head.S
Wed Apr 17 \
00:37:46 2002 @@ -25,24 +25,30 @@
#include <linux/linkage.h>
#include <asm/segment.h>
+#include <asm/boot.h>
.globl startup_32
startup_32:
cld
cli
- movl $(__KERNEL_DS),%eax
- movl %eax,%ds
- movl %eax,%es
- movl %eax,%fs
- movl %eax,%gs
- lss SYMBOL_NAME(stack_start),%esp
- xorl %eax,%eax
-1: incl %eax # check that A20 really IS enabled
- movl %eax,0x000000 # loop forever if it isn't
- cmpl %eax,0x100000
- je 1b
+ /*
+ * Save the initial registers
+ */
+ movl %eax, eax
+ movl %ebx, ebx
-------------------
You want to change completely the protected mode entry point, that does
bother me, you know why (gujin). It is a simple (as simple as possible)
interface, available from a _very_ long time.
I would say:
- Please initialise registers (segment registers) before using them, it
is already complex enough. A bug there will be really difficult to find.
Moreover that remind me another OS using registers (%bx) without
initialising it first.
- Please keep the 'lss SYMBOL_NAME(stack_start),%esp' around, it is the
_only_ way to know if a kernel is "loaded low" or "loaded high", just in
case you want to write a bootloader which loads _any_ kernel, even 1.x
- Please stay compatible.
Etienne.
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This archive was generated by hypermail 2b29 : Tue Apr 23 2002 - 22:00:20 EST