On Wed, 2009-03-11 at 20:27 +0000, jeo_dan wrote:
> i compile hello.c and generate hello.s19 code compiled at 0x8000 correctly.
but s19 file not contain reset vector info
> i run myown emulator correctly when i add reset vector info manually to s19
file.
> how can i generate s19 with reset vector info?

The way I do it is as follows:

Define a section in the linker script where the vector table is to go,
simplified linker script just for vectors below:

MEMORY
{
vectors : ORIGIN = 0xFFC0, LENGTH = 0x40
}

SECTIONS
{
.vectors :
{
} > vectors
}

Then you can either in C code use

__attribute__ ((section(".vectors"))

or in ASM code (this is how I do it):

.section .vectors
short someFunction
short someFunction
... ; Entries skipped
short resetVector ; last call, reset vector

And that's it.

When you go to link, the linker will now know where to put the vector
table and your s19 file will contain the correct addresses. If you
haven't created your own linker script yet, now would be a good time to
do so. The default linker script more than likely doesn't 100% match
your hardware. =)

Stephan