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Re: [PATCH] [AArch64] Don't fetch command line options without semi-hosting

From: Corinna Vinschen <vinschen at redhat dot com>
To: newlib at sourceware dot org
Date: Wed, 9 Aug 2017 17:43:43 +0200
Subject: Re: [PATCH] [AArch64] Don't fetch command line options without semi-hosting
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On Aug  9 15:37, Yao Qi wrote:
> Nowadays, the code fetching command line options via semi-hosting are
> unconditionally pulled in, so that the semi-hosting code is still
> there even I compile with option --specs=nosys.specs.
> 
> gdb ./aarch64-none-elf/libgloss/aarch64/crt0.o
> 
> (gdb) disassemble _start
> 
>    0x0000000000000050 <+80>:	ldr	x1, 0x128 <_cpu_init_hook+48>
>    0x0000000000000054 <+84>:	mov	w0, #0x15
>    0x0000000000000058 <+88>:	hlt	#0xf000
> 
> This patch fixes this problem by wrapping the code by ARM_RDI_MONITOR.
> When semi-hosting is not used, set command line options to NULL.
> ---
>  libgloss/aarch64/crt0.S | 6 ++++++
>  1 file changed, 6 insertions(+)

Pushed.


Thanks,
Corinna

-- 
Corinna Vinschen
Cygwin Maintainer
Red Hat

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References:
- [PATCH] [AArch64] Don't fetch command line options without semi-hosting
  - From: Yao Qi

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