Re: [PATCH 2/2] GDB process record and reverse debugging improvements for arm*-linux*

[Yao Qi <yao@codesourcery.com>]

On 11/08/2013 11:20 AM, Omair Javaid wrote:
> 2013-11-08  Omair Javaid<omair.javaid@linaro.org>
>
> 	* arm-linux-tdep.c (struct arm_linux_record_tdep): Declare.
> 	(arm_canonicalize_syscall): New function.
> 	(arm_all_but_pc_registers_record): New function.
> 	(arm_linux_syscall_record): New function.
> 	(arm_linux_init_abi): Add syscall recording constructs.
> 	* arm-tdep.c (thumb_record_ldm_stm_swi): Update thumb syscall decoding.
> 	(arm_record_coproc_data_proc): Update arm syscall decoding.
> 	* arm-tdep.h (gdbarch_tdep): Update arm_syscall_record declaration.
>

We can write the last entry like this:

	* arm-tdep.h (struct gdbarch_tdep) <arm_swi_record>: Remove.
	<arm_syscall_record>: New field.

>
> +#include "record-full.h"
> +#include "linux-record.h"
> +

We should mention these two inclusions in ChangeLog too, like

	* arm-linux-tdep.c: Include "record-full.h" and
	"linux-record.h".

>   #include "cli/cli-utils.h"
>   #include "stap-probe.h"
>   #include "parser-defs.h"
> @@ -1231,6 +1234,98 @@ arm_stap_parse_special_token (struct gdb
>     return 1;
>   }
>
> +/* ARM process record-replay constructs; syscall, signal etc.  */
> +
> +struct linux_record_tdep arm_linux_record_tdep;
> +
> +/* arm_canonicalize_syscall maps from the native arm Linux set
> +   of syscall ids into a canonical set of syscall ids used by
> +   process record.  */
> +
> +static enum gdb_syscall
> +arm_canonicalize_syscall (int syscall)
> +{
> +  enum { sys_process_vm_writev = 377 };
> +
> +  if (syscall <=  gdb_sys_sched_getaffinity)
> +    {
> +      return syscall;
> +    }

Unnecessary braces.

> +  else if (syscall >= 243 && syscall <= 247 )
> +    {
> +      return syscall + 2;
> +    }
> +  else if (syscall >= 248 && syscall <= 253 )
> +    {
> +      return syscall + 4;
> +    }
> +
> +  return -1;
> +}

> +
> +/* Handler for arm system call instruction and recording.  */
> +
> +static int
> +arm_linux_syscall_record (struct regcache *regcache, unsigned long
> svc_number)

Your mailer should wrap your patch.  That means other people can't apply 
your patch cleanly.

Patch looks good to me but you still need a maintainer's approval.

-- 
Yao (齐尧)