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* libcoff-in.h (xcoff_tdata): Add a lineno_counts field.
	* libcoff.h: Regenerate.
	* xcofflink.c (xcoff_link_add_symbols): Record per-symbol
	line-number counts in the bfd's lineno_counts field.
	Don't keep per-csect line-number counts.
	(xcoff_sweep): Don't update per-csect line-number counts.
	(bfd_xcoff_size_dynamic_sections): Count the number of line-number
	entries in each output section.
	(xcoff_link_input_bfd): Get the number of line numbers from
	the bfd's lineno_counts field, rather than recalculating it
	from scratch.  Fix the range check when updating C_BINCL and
	C_EINCL symbols.
	(_bfd_xcoff_bfd_final_link): Don't count the output line numbers
	here.  Don't expect csects to have line-number counts.

ld/testsuite/
	* ld-powerpc/aix-lineno-1.s, ld-powerpc/aix-lineno-1.txt,
	ld-powerpc/aix-lineno-1a.dd, ld-powerpc/aix-lineno-1a.nd,
	ld-powerpc/aix-lineno-1b.dd, ld-powerpc/aix-lineno-1b.nd: New tests.
	* ld-powerpc/aix52.exp: Run them.  Copy aix-lineno-1.txt to tmpdir.
This commit is contained in:
Richard Sandiford 2009-03-14 09:32:33 +00:00
parent e450936a6f
commit 3df13c4a63
12 changed files with 225 additions and 111 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
bfd/ChangeLog
View file

@ -1,3 +1,20 @@
2009-03-14 Richard Sandiford <r.sandiford@uk.ibm.com>
* libcoff-in.h (xcoff_tdata): Add a lineno_counts field.
* libcoff.h: Regenerate.
* xcofflink.c (xcoff_link_add_symbols): Record per-symbol
line-number counts in the bfd's lineno_counts field.
Don't keep per-csect line-number counts.
(xcoff_sweep): Don't update per-csect line-number counts.
(bfd_xcoff_size_dynamic_sections): Count the number of line-number
entries in each output section.
(xcoff_link_input_bfd): Get the number of line numbers from
the bfd's lineno_counts field, rather than recalculating it
from scratch. Fix the range check when updating C_BINCL and
C_EINCL symbols.
(_bfd_xcoff_bfd_final_link): Don't count the output line numbers
here. Don't expect csects to have line-number counts.
2009-03-14 Richard Sandiford <r.sandiford@uk.ibm.com>
* libcoff-in.h (xcoff_tdata): Change debug_indices to a signed long.

1
bfd/libcoff-in.h
View file

@ -166,6 +166,7 @@ struct xcoff_tdata
/* Used by the XCOFF backend linker. */
asection **csects;
long *debug_indices;
unsigned int *lineno_counts;
unsigned int import_file_id;
};

1
bfd/libcoff.h
View file

@ -170,6 +170,7 @@ struct xcoff_tdata
/* Used by the XCOFF backend linker. */
asection **csects;
long *debug_indices;
unsigned int *lineno_counts;
unsigned int import_file_id;
};

212
bfd/xcofflink.c
View file

@ -947,6 +947,7 @@ xcoff_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
bfd_size_type symcount;
struct xcoff_link_hash_entry **sym_hash;
asection **csect_cache;
unsigned int *lineno_counts;
bfd_size_type linesz;
asection *o;
asection *last_real;
@ -1013,6 +1014,15 @@ xcoff_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
goto error_return;
xcoff_data (abfd)->csects = csect_cache;
/* We garbage-collect line-number information on a symbol-by-symbol
basis, so we need to have quick access to the number of entries
per symbol. */
amt = symcount * sizeof (unsigned int);
lineno_counts = bfd_zalloc (abfd, amt);
if (lineno_counts == NULL && symcount != 0)
goto error_return;
xcoff_data (abfd)->lineno_counts = lineno_counts;
/* While splitting sections into csects, we need to assign the
relocs correctly. The relocs and the csects must both be in
order by VMA within a given section, so we handle this by
@ -1104,6 +1114,7 @@ xcoff_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
esym += (sym.n_numaux + 1) * symesz;
sym_hash += sym.n_numaux + 1;
csect_cache += sym.n_numaux + 1;
lineno_counts += sym.n_numaux + 1;
continue;
}
@ -1174,7 +1185,7 @@ xcoff_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
if (lin.l_lnno == 0)
break;
}
csect->lineno_count += (linp - linpstart) / linesz;
*lineno_counts = (linp - linpstart) / linesz;
/* The setting of line_filepos will only be
useful if all the line number entries for a
csect are contiguous; this only matters for
@ -1795,6 +1806,7 @@ xcoff_link_add_symbols (bfd *abfd, struct bfd_link_info *info)
esym += (sym.n_numaux + 1) * symesz;
sym_hash += sym.n_numaux + 1;
csect_cache += sym.n_numaux + 1;
lineno_counts += sym.n_numaux + 1;
}
BFD_ASSERT (last_real == NULL || last_real->next == first_csect);
@ -2602,7 +2614,6 @@ xcoff_sweep (struct bfd_link_info *info)
{
o->size = 0;
o->reloc_count = 0;
o->lineno_count = 0;
}
}
}
@ -3396,6 +3407,7 @@ bfd_xcoff_size_dynamic_sections (bfd *output_bfd,
bfd_size_type symcount;
long *debug_index;
asection **csectpp;
unsigned int *lineno_counts;
struct xcoff_link_hash_entry **sym_hash;
bfd_byte *esym, *esymend;
bfd_size_type symesz;
@ -3439,6 +3451,7 @@ bfd_xcoff_size_dynamic_sections (bfd *output_bfd,
}
csectpp = xcoff_data (sub)->csects;
lineno_counts = xcoff_data (sub)->lineno_counts;
sym_hash = obj_xcoff_sym_hashes (sub);
symesz = bfd_coff_symesz (sub);
esym = (bfd_byte *) obj_coff_external_syms (sub);
@ -3448,6 +3461,7 @@ bfd_xcoff_size_dynamic_sections (bfd *output_bfd,
{
struct internal_syment sym;
union internal_auxent aux;
asection *csect;
const char *name;
int keep_p;
@ -3473,8 +3487,9 @@ bfd_xcoff_size_dynamic_sections (bfd *output_bfd,
name = NULL;
/* Decide whether to copy this symbol to the output file. */
csect = *csectpp;
keep_p = xcoff_keep_symbol_p (info, sub, &sym, &aux,
*sym_hash, *csectpp, name);
*sym_hash, csect, name);
if (keep_p < 0)
return FALSE;
@ -3497,11 +3512,14 @@ bfd_xcoff_size_dynamic_sections (bfd *output_bfd,
}
else
*debug_index = -1;
if (*lineno_counts > 0)
csect->output_section->lineno_count += *lineno_counts;
}
esym += (sym.n_numaux + 1) * symesz;
csectpp += sym.n_numaux + 1;
sym_hash += sym.n_numaux + 1;
lineno_counts += sym.n_numaux + 1;
debug_index += sym.n_numaux + 1;
}
@ -3590,6 +3608,7 @@ xcoff_link_input_bfd (struct xcoff_final_link_info *finfo,
struct xcoff_link_hash_entry **sym_hash;
struct internal_syment *isymp;
asection **csectpp;
unsigned int *lineno_counts;
long *debug_index;
long *indexp;
unsigned long output_index;
@ -3802,6 +3821,7 @@ xcoff_link_input_bfd (struct xcoff_final_link_info *finfo,
isymp = finfo->internal_syms;
indexp = finfo->sym_indices;
csectpp = xcoff_data (input_bfd)->csects;
lineno_counts = xcoff_data (input_bfd)->lineno_counts;
debug_index = xcoff_data (input_bfd)->debug_indices;
outsym = finfo->outsyms;
incls = 0;
@ -4056,8 +4076,7 @@ xcoff_link_input_bfd (struct xcoff_final_link_info *finfo,
&& ISFCN (isymp->n_type)
&& aux.x_sym.x_fcnary.x_fcn.x_lnnoptr != 0)
{
if (finfo->info->strip != strip_none
&& finfo->info->strip != strip_some)
if (*lineno_counts == 0)
aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = 0;
else
{
@ -4065,14 +4084,21 @@ xcoff_link_input_bfd (struct xcoff_final_link_info *finfo,
unsigned int enc_count;
bfd_signed_vma linoff;
struct internal_lineno lin;
bfd_byte *linp;
bfd_byte *linpend;
bfd_vma offset;
file_ptr pos;
bfd_size_type amt;
/* Read in the enclosing section's line-number
information, if we haven't already. */
o = *csectpp;
enclosing = xcoff_section_data (abfd, o)->enclosing;
enc_count = xcoff_section_data (abfd, o)->lineno_count;
if (oline != enclosing)
{
file_ptr pos = enclosing->line_filepos;
bfd_size_type amt = linesz * enc_count;
pos = enclosing->line_filepos;
amt = linesz * enc_count;
if (bfd_seek (input_bfd, pos, SEEK_SET) != 0
|| (bfd_bread (finfo->linenos, amt, input_bfd)
!= amt))
@ -4080,114 +4106,83 @@ xcoff_link_input_bfd (struct xcoff_final_link_info *finfo,
oline = enclosing;
}
/* Copy across the first entry, adjusting its
symbol index. */
linoff = (aux.x_sym.x_fcnary.x_fcn.x_lnnoptr
- enclosing->line_filepos);
linp = finfo->linenos + linoff;
bfd_coff_swap_lineno_in (input_bfd, linp, &lin);
lin.l_addr.l_symndx = *indexp;
bfd_coff_swap_lineno_out (output_bfd, &lin, linp);
linp += linesz;
bfd_coff_swap_lineno_in (input_bfd,
(void *) (finfo->linenos + linoff),
(void *) &lin);
if (lin.l_lnno != 0
|| ((bfd_size_type) lin.l_addr.l_symndx
!= ((esym
- isymesz
- ((bfd_byte *)
obj_coff_external_syms (input_bfd)))
/ isymesz)))
aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = 0;
else
/* Copy the other entries, adjusting their addresses. */
linpend = linp + *lineno_counts * linesz;
offset = (o->output_section->vma
+ o->output_offset
- o->vma);
for (; linp < linpend; linp += linesz)
{
bfd_byte *linpend, *linp;
bfd_vma offset;
bfd_size_type count;
bfd_coff_swap_lineno_in (input_bfd, linp, &lin);
lin.l_addr.l_paddr += offset;
bfd_coff_swap_lineno_out (output_bfd, &lin, linp);
}
lin.l_addr.l_symndx = *indexp;
bfd_coff_swap_lineno_out (output_bfd, (void *) &lin,
(void *) (finfo->linenos
+ linoff));
linpend = (finfo->linenos
+ enc_count * linesz);
offset = (o->output_section->vma
+ o->output_offset
- o->vma);
for (linp = finfo->linenos + linoff + linesz;
linp < linpend;
linp += linesz)
{
bfd_coff_swap_lineno_in (input_bfd, (void *) linp,
(void *) &lin);
if (lin.l_lnno == 0)
break;
lin.l_addr.l_paddr += offset;
bfd_coff_swap_lineno_out (output_bfd,
(void *) &lin,
(void *) linp);
}
count = (linp - (finfo->linenos + linoff)) / linesz;
aux.x_sym.x_fcnary.x_fcn.x_lnnoptr =
(o->output_section->line_filepos
/* Write out the entries we've just processed. */
pos = (o->output_section->line_filepos
+ o->output_section->lineno_count * linesz);
amt = linesz * *lineno_counts;
if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
|| bfd_bwrite (finfo->linenos + linoff,
amt, output_bfd) != amt)
return FALSE;
o->output_section->lineno_count += *lineno_counts;
if (bfd_seek (output_bfd,
aux.x_sym.x_fcnary.x_fcn.x_lnnoptr,
SEEK_SET) != 0
|| (bfd_bwrite (finfo->linenos + linoff,
linesz * count, output_bfd)
!= linesz * count))
return FALSE;
/* Record the offset of the symbol's line numbers
in the output file. */
aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = pos;
o->output_section->lineno_count += count;
if (incls > 0)
{
struct internal_syment *iisp, *iispend;
long *iindp;
bfd_byte *oos;
bfd_vma range_start, range_end;
int iiadd;
if (incls > 0)
/* Update any C_BINCL or C_EINCL symbols
that refer to a line number in the
range we just output. */
iisp = finfo->internal_syms;
iispend = iisp + obj_raw_syment_count (input_bfd);
iindp = finfo->sym_indices;
oos = finfo->outsyms;
range_start = enclosing->line_filepos + linoff;
range_end = range_start + *lineno_counts * linesz;
while (iisp < iispend)
{
struct internal_syment *iisp, *iispend;
long *iindp;
bfd_byte *oos;
int iiadd;
/* Update any C_BINCL or C_EINCL symbols
that refer to a line number in the
range we just output. */
iisp = finfo->internal_syms;
iispend = (iisp
+ obj_raw_syment_count (input_bfd));
iindp = finfo->sym_indices;
oos = finfo->outsyms;
while (iisp < iispend)
if (*iindp >= 0
&& (iisp->n_sclass == C_BINCL
|| iisp->n_sclass == C_EINCL)
&& iisp->n_value >= range_start
&& iisp->n_value < range_end)
{
if (*iindp >= 0
&& (iisp->n_sclass == C_BINCL
|| iisp->n_sclass == C_EINCL)
&& ((bfd_size_type) iisp->n_value
>= (bfd_size_type)(enclosing->line_filepos + linoff))
&& ((bfd_size_type) iisp->n_value
< (enclosing->line_filepos
+ enc_count * linesz)))
{
struct internal_syment iis;
struct internal_syment iis;
bfd_coff_swap_sym_in (output_bfd,
(void *) oos,
(void *) &iis);
iis.n_value =
(iisp->n_value
- enclosing->line_filepos
- linoff
+ aux.x_sym.x_fcnary.x_fcn.x_lnnoptr);
bfd_coff_swap_sym_out (output_bfd,
(void *) &iis,
(void *) oos);
--incls;
}
iiadd = 1 + iisp->n_numaux;
if (*iindp >= 0)
oos += iiadd * osymesz;
iisp += iiadd;
iindp += iiadd;
bfd_coff_swap_sym_in (output_bfd, oos, &iis);
iis.n_value = (iisp->n_value
- range_start
+ pos);
bfd_coff_swap_sym_out (output_bfd,
&iis, oos);
--incls;
}
iiadd = 1 + iisp->n_numaux;
if (*iindp >= 0)
oos += iiadd * osymesz;
iisp += iiadd;
iindp += iiadd;
}
}
}
@ -4204,6 +4199,7 @@ xcoff_link_input_bfd (struct xcoff_final_link_info *finfo,
indexp += add;
isymp += add;
csectpp += add;
lineno_counts += add;
debug_index += add;
}
@ -5498,15 +5494,15 @@ _bfd_xcoff_bfd_final_link (bfd *abfd, struct bfd_link_info *info)
if (finfo.strtab == NULL)
goto error_return;
/* Count the line number and relocation entries required for the
output file. Determine a few maximum sizes. */
/* Count the relocation entries required for the output file.
(We've already counted the line numbers.) Determine a few
maximum sizes. */
max_contents_size = 0;
max_lineno_count = 0;
max_reloc_count = 0;
for (o = abfd->sections; o != NULL; o = o->next)
{
o->reloc_count = 0;
o->lineno_count = 0;
for (p = o->map_head.link_order; p != NULL; p = p->next)
{
if (p->type == bfd_indirect_link_order)
@ -5521,18 +5517,12 @@ _bfd_xcoff_bfd_final_link (bfd *abfd, struct bfd_link_info *info)
the linker has decided to not include. */
sec->linker_mark = TRUE;
if (info->strip == strip_none
|| info->strip == strip_some)
o->lineno_count += sec->lineno_count;
o->reloc_count += sec->reloc_count;
if (sec->rawsize > max_contents_size)
max_contents_size = sec->rawsize;
if (sec->size > max_contents_size)
max_contents_size = sec->size;
if (sec->lineno_count > max_lineno_count)
max_lineno_count = sec->lineno_count;
if (coff_section_data (sec->owner, sec) != NULL
&& xcoff_section_data (sec->owner, sec) != NULL
&& (xcoff_section_data (sec->owner, sec)->lineno_count

7
ld/testsuite/ChangeLog
View file

@ -1,3 +1,10 @@
2009-03-14 Richard Sandiford <r.sandiford@uk.ibm.com>
* ld-powerpc/aix-lineno-1.s, ld-powerpc/aix-lineno-1.txt,
ld-powerpc/aix-lineno-1a.dd, ld-powerpc/aix-lineno-1a.nd,
ld-powerpc/aix-lineno-1b.dd, ld-powerpc/aix-lineno-1b.nd: New tests.
* ld-powerpc/aix52.exp: Run them. Copy aix-lineno-1.txt to tmpdir.
2009-03-14 Richard Sandiford <r.sandiford@uk.ibm.com>
* ld-powerpc/aix-toc-1.ex, ld-powerpc/aix-toc-1a.s,

25
ld/testsuite/ld-powerpc/aix-lineno-1.s Normal file
View file

@ -0,0 +1,25 @@
.file "tmpdir/aix-lineno-1.txt"
.csect .foo[PR]
.function .foo,.foo
.foo:
.bf 1
nop
.line 2
nop
.line 3
nop
.line 4
nop
.line 5
nop
.ef 1
.globl .main
.csect .main[PR]
.function .main,.main
.main:
.bf 7
bl .foo
.line 2
nop
.ef 7

8
ld/testsuite/ld-powerpc/aix-lineno-1.txt Normal file
View file

@ -0,0 +1,8 @@
Four
and
twenty
blackbirds
baked
in
a
pie

24
ld/testsuite/ld-powerpc/aix-lineno-1a.dd Normal file
View file

@ -0,0 +1,24 @@
.*
Disassembly of section \.text:
0*10000000 <\.foo>:
Four
*10000000: 60 00 00 00 (oril r0,r0,0|nop)
and
*10000004: 60 00 00 00 (oril r0,r0,0|nop)
twenty
*10000008: 60 00 00 00 (oril r0,r0,0|nop)
blackbirds
*1000000c: 60 00 00 00 (oril r0,r0,0|nop)
baked
*10000010: 60 00 00 00 (oril r0,r0,0|nop)
0*10000014 <\.main>:
in
a
*10000014: 4b ff ff ed bl 10000000 <\.foo>
pie
*10000018: 60 00 00 00 (oril r0,r0,0|nop)

8
ld/testsuite/ld-powerpc/aix-lineno-1a.nd Normal file
View file

@ -0,0 +1,8 @@
0*10000000 t \.bf
0*10000014 t \.bf
0*10000014 t \.ef
0*1000001c t \.ef
0*10000000 t \.foo
0*10000000 t \.foo
0*10000014 t \.main
0*10000014 T \.main

16
ld/testsuite/ld-powerpc/aix-lineno-1b.dd Normal file
View file

@ -0,0 +1,16 @@
.*
Disassembly of section \.text:
0*10000000 <\.foo>:
*10000000: 60 00 00 00 (oril r0,r0,0|nop)
*10000004: 60 00 00 00 (oril r0,r0,0|nop)
*10000008: 60 00 00 00 (oril r0,r0,0|nop)
*1000000c: 60 00 00 00 (oril r0,r0,0|nop)
*10000010: 60 00 00 00 (oril r0,r0,0|nop)
0*10000014 <\.main>:
*10000014: 4b ff ff ed bl 10000000 <\.foo>
*10000018: 60 00 00 00 (oril r0,r0,0|nop)

3
ld/testsuite/ld-powerpc/aix-lineno-1b.nd Normal file
View file

@ -0,0 +1,3 @@
0*10000000 t \.foo
0*10000014 t \.main
0*10000014 T \.main

14
ld/testsuite/ld-powerpc/aix52.exp
View file

@ -64,6 +64,10 @@ proc run_aix_test { size name ldopts asopts sources tools output } {
$output]]
}
foreach file { "aix-lineno-1.txt" } {
remote_upload host "$srcdir/$subdir/$file" "tmpdir/$file"
}
set aix52tests {
{"Absolute branch test 1"
"-shared -bI:aix-abs-branch-1.im -bE:aix-abs-branch-1.ex"
@ -98,6 +102,16 @@ set aix52tests {
{{objdump {-D -j.text -j.data} aix-glink-1-SIZE.dd}}
"aix-glink-1.so"}
{"Line number test 1 (no discards)" "-e.main"
"" {aix-lineno-1.s}
{{objdump -dS aix-lineno-1a.dd} {nm {} aix-lineno-1a.nd}}
"aix-lineno-1a.exe"}
{"Line number test 1 (discard locals)" "-e.main -x"
"" {aix-lineno-1.s}
{{objdump -dS aix-lineno-1b.dd} {nm {} aix-lineno-1b.nd}}
"aix-lineno-1b.exe"}
{"TOC test 1" "-shared -bE:aix-toc-1.ex"
"" {aix-toc-1a.s aix-toc-1b.s}
{{objdump -dr aix-toc-1-SIZE.dd}}