On Wed, 15 Apr 2009 08:35:09 -0700, Ian Lance Taylor <iant@xxxxxxxxxx>
wrote:
> "Vincent R." <forumer@xxxxxxxxxxxxxxx> writes:
>
>> when declaring a label like this :
>>
>> tree block, body, cond, except_stmt, label, tlabel, name;
>> location_t loc, loclabel;
>> gcc_assert (c_parser_next_token_is_keyword (parser, RID_SEH_TRY));
>>
>> /* label try */
>> loclabel = c_parser_peek_token (parser)->location;
>> name = c_parser_peek_token (parser)->value;
>> cfun->seh_try_begin_label = name;
>> tlabel = define_label (loclabel, name);
>> ...
>>
>>
>>
>> How can we know the label name( that will be generated ?
>
> Do you mean what label will be generated in the assembler code? That is
> almost certainly not the right question to ask during the parse, so: why
> do you want to know?
>
> In any case, there is no answer in the frontend. The assembly level
> label name is normally not determined until RTL is generated.
>
> Ian
We are supposed to fill an array with __try __except address, so it means
we are generating some
labels and after we are doing this :
void
arm_seh_rdata_gen (FILE *fp, char *name, tree decl)
{
int has_seh = cfun->has_seh;
asm_fprintf (fp, ".L%s_end:\n", name);
// if (has_seh)
if (cfun->has_seh)
{
asm_fprintf (fp, "\t.section .rdata /* SEH SCOPE_TABLE */\n");
asm_fprintf (fp, ".L%s_handler_data:\n", name);
asm_fprintf (fp, "\t.word 1 /* Count */\n");
asm_fprintf (fp, "\t.word %s /* BeginAddress */\n", ?????????); /*
begin of __try block */
asm_fprintf (fp, "\t.word .L%s_end /* EndAddress */\n", name); /*
end of __try block */
asm_fprintf (fp, "\t.word 0 /* HandleAddress */\n"); /*
exception filter */
asm_fprintf (fp, "\t.word 0 /* JumpTarget */\n"); /*
}
}
In the .rdata section we need to know the label corresponding to end of
__try, so how are we supposed to do that ?
