Re: DTB build failure due to preproccessing

From: Jon Loeliger
Date: Fri May 31 2013 - 09:50:25 EST


> >
> > Line 374 is the "IDSEL 0x16..." line here:
> > interrupt-map = <
> > /* IRQ mapping for pci slots and ALI M1533
> > ...
> > * management core also isn't used.
> > */
> >
> > /* IDSEL 0x16 / dev=6, bus=0 / PCI slot 3 */
> > 0x3000 0 0 1 &xps_intc_0 3 2
> > 0x3000 0 0 2 &xps_intc_0 2 2
> > 0x3000 0 0 3 &xps_intc_0 5 2
> > 0x3000 0 0 4 &xps_intc_0 4 2

Can you show me the original source without mods here, please?
Or is the "..." purely elided comments?

> > Which gets preprocessed into:
> > interrupt-map = <
> > # 375 "arch/powerpc/boot/dts/virtex440-ml510.dts"
> > 0x3000 0 0 1 &xps_intc_0 3 2
> > 0x3000 0 0 2 &xps_intc_0 2 2
> > 0x3000 0 0 3 &xps_intc_0 5 2
> > 0x3000 0 0 4 &xps_intc_0 4 2


> dtc is only able to track line numbers when the native /include/
> directive is used. The #include directive doesn't help it. It should be
> added, but until it is the following patch solves the problem:

It's supposed to do better than that, I think.
This, from dtc-lexer.l

<*>^"#"(line)?{WS}+[0-9]+{WS}+{STRING}({WS}+[0-9]+)? {
char *line, *tmp, *fn;
/* skip text before line # */
line = yytext;
while (!isdigit(*line))
line++;
/* skip digits in line # */
tmp = line;
while (!isspace(*tmp))
tmp++;
/* "NULL"-terminate line # */
*tmp = '\0';
/* start of filename */
fn = strchr(tmp + 1, '"') + 1;
/* strip trailing " from filename */
tmp = strchr(fn, '"');
*tmp = 0;
/* -1 since #line is the number of the next line */
srcpos_set_line(xstrdup(fn), atoi(line) - 1);
}

Hrm. Is this a "that's not in the kernel's copy yet" problem?
Or did this fail to match the offending '# <line> <file>' somehow?
(Like, is that '# 375' really in column 1?)

Thanks,
jdl
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