Re: [PATCH, repost] Add a dummy interrupt handler to nios2 crt0.s.

Corinna Vinschen <[email protected]> Wed, 3 Apr 2019 18:03:52 +0200

Newsgroups	gmane.comp.lib.newlib
Message-ID	<[email protected]>

On Apr  3 09:59, Sandra Loosemore wrote:
> The location of the handler at offset 0x20 from the start of memory,
> immediately after the 32-byte reset vector, matches the expectations
> of real hardware (e.g., a 3c120 board).
> ---
>  libgloss/nios2/crt0.S | 14 +++++++++++++-
>  1 file changed, 13 insertions(+), 1 deletion(-)
> 
> diff --git a/libgloss/nios2/crt0.S b/libgloss/nios2/crt0.S
> index 77eacb3..c4dd4c6 100644
> --- a/libgloss/nios2/crt0.S
> +++ b/libgloss/nios2/crt0.S
> @@ -1,6 +1,6 @@
>  /* crt0.S -- startup code for Nios II QEMU generic-nommu board emulation.
>  
> -   Copyright (c) 2018 Mentor Graphics
> +   Copyright (c) 2018-2019 Mentor Graphics
>  
>     The authors hereby grant permission to use, copy, modify, distribute,
>     and license this software and its documentation for any purpose, provided
> @@ -81,6 +81,18 @@ __reset:
>  
>  	.size __reset, . - __reset
>  
> +/* Provide a stub interrupt handler that waits in a busy loop.
> +   The alignment puts it at offset 0x20 from the base of RAM.  */
> +
> +	.align 5
> +
> +        .globl  __interrupt_handler
> +        .type   __interrupt_handler, @function
> +__interrupt_handler:
> +0:
> +	br 0b
> +
> +	.size __interrupt_handler, . - __interrupt_handler
>  
>  /* __start is the ELF entry point.  */
>  
> -- 
> 2.8.1

Pushed.


Thanks,
Corinna

-- 
Corinna Vinschen
Cygwin Maintainer
Red Hat

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