Re: RFC: remove trace_kludge global

[Yao Qi <yao@codesourcery.com>]

Hi, Tom,

On 03/12/2013 03:26 AM, Tom Tromey wrote:
> @@ -2608,17 +2585,18 @@ agent_eval_command_one (char *exp, int eval, CORE_ADDR pc)
>     struct cleanup *old_chain = 0;
>     struct expression *expr;
>     struct agent_expr *agent;
> +  int trace_string = 0;
>
>     if (!eval)
>       {
> -      trace_string_kludge = 0;
>         if (*exp == '/')
> -        exp = decode_agent_options (exp);
> +        exp = decode_agent_options (exp, &trace_string);

'trace_string' is only set when 'eval' is zero, so...

>       }
>
>     if (!eval && strcmp (exp, "$_ret") == 0)
>       {
> -      agent = gen_trace_for_return_address (pc, get_current_arch ());
> +      agent = gen_trace_for_return_address (pc, get_current_arch (),
> +					    trace_string);
>         old_chain = make_cleanup_free_agent_expr (agent);
>       }
>     else
> @@ -2626,9 +2604,9 @@ agent_eval_command_one (char *exp, int eval, CORE_ADDR pc)
>         expr = parse_exp_1 (&exp, pc, block_for_pc (pc), 0);
>         old_chain = make_cleanup (free_current_contents, &expr);
>         if (eval)
> -	agent = gen_eval_for_expr (pc, expr);
> +	agent = gen_eval_for_expr (pc, expr, trace_string);

... 'trace_string' should be zero here.  On the other hand, when 'eval' 
is true, we are evaluating the result of the expression, so no tracing 
stuff should be involved.  So, we don't have to add the new argument 
'trace_string' to gen_eval_for_expr, and set 'ax->trace_string' to zero 
inside gen_eval_for_expr, and the callers of gen_eval_for_expr are not 
updated.

>         else
> -	agent = gen_trace_for_expr (pc, expr);
> +	agent = gen_trace_for_expr (pc, expr, trace_string);
>         make_cleanup_free_agent_expr (agent);
>       }
-- 
Yao (齐尧)