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Re: [PATCH] gdbserver: ARM: add support for uclinux
- From: Pedro Alves <palves at redhat dot com>
- To: Will Deacon <will dot deacon at arm dot com>
- Cc: gdb-patches at sourceware dot org
- Date: Fri, 13 Apr 2012 15:57:41 +0100
- Subject: Re: [PATCH] gdbserver: ARM: add support for uclinux
- References: <1334308067-2285-1-git-send-email-will.deacon@arm.com>
On 04/13/2012 10:07 AM, Will Deacon wrote:
> When debugging a uclinux target, it is necessary to retrieve the text
> and data offsets of the running program in order for symbol resolution
> to work correctly.
>
> This patch defines PT_{TEXT,DATA,TEXT_END}_ADDR for ARM, which can be
> issued as `magic' addresses to the PTRACE_PEEKUSER request in order to
> retrieve the child offsets.
Is this for older kernels? I see these defined in
arch/arm/include/asm/ptrace.h in current mainline.
Anyway, looks fine.
> ---
>
> 2012-04-13 Will Deacon <will.deacon@arm.com>
>
> * linux-low.c: Define PT_TEXT_ADDR, PT_TEXT_END_ADDR and
> PT_DATA_ADDR for ARM targets.
>
> gdb/gdbserver/linux-low.c | 4 ++++
> 1 files changed, 4 insertions(+), 0 deletions(-)
>
> diff --git a/gdb/gdbserver/linux-low.c b/gdb/gdbserver/linux-low.c
> index 043451d..c4b52e7 100644
> --- a/gdb/gdbserver/linux-low.c
> +++ b/gdb/gdbserver/linux-low.c
> @@ -4766,6 +4766,10 @@ linux_stopped_data_address (void)
> #define PT_TEXT_ADDR (0x10000*4)
> #define PT_DATA_ADDR (0x10004*4)
> #define PT_TEXT_END_ADDR (0x10008*4)
> +#elif defined(__arm__)
> +#define PT_TEXT_ADDR 0x10000
> +#define PT_DATA_ADDR 0x10004
> +#define PT_TEXT_END_ADDR 0x10008
> #endif
>
> /* Under uClinux, programs are loaded at non-zero offsets, which we need
--
Pedro Alves