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re PR target/25258 ([4.0 regression/hpux] gcc generates incorrect stabs debug output)

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PR target/25258
	* pa.c (pa_output_function_epilogue): Set cfun->machine->in_nsubspa to
	indicate function epilogue has been output.
	(pa_asm_output_mi_thunk): Likewise.
	(output_deferred_plabels): Put plabels in readonly data section when
	not generating PIC code.
	(som_output_text_section_asm_op): Use .NSUBSPA to output debug
	information.  Add assert.
	(som_output_comdat_data_section_asm_op): New function.
	(pa_som_asm_init_sections): Use som_output_comdat_data_section_asm_op
	instead of output_section_asm_op for COMDAT sections.

From-SVN: r108420
This commit is contained in:
John David Anglin 2005-12-12 17:17:51 +00:00 committed by John David Anglin
parent ffb99c1eba
commit 1a83bfc389
2 changed files with 53 additions and 18 deletions
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13
gcc/ChangeLog
View File

@ -1,3 +1,16 @@
2005-12-12 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
* pa.c (pa_output_function_epilogue): Set cfun->machine->in_nsubspa to
indicate function epilogue has been output.
(pa_asm_output_mi_thunk): Likewise.
(output_deferred_plabels): Put plabels in readonly data section when
not generating PIC code.
(som_output_text_section_asm_op): Use .NSUBSPA to output debug
information. Add assert.
(som_output_comdat_data_section_asm_op): New function.
(pa_som_asm_init_sections): Use som_output_comdat_data_section_asm_op
instead of output_section_asm_op for COMDAT sections.
2005-12-12 J"orn Rennecke <joern.rennecke@st.com>
* cfgcleanup.c (condjump_equiv_p, try_crossjump_to_edge):

58
gcc/config/pa/pa.c
View File

@ -3935,6 +3935,7 @@ pa_output_function_epilogue (FILE *file, HOST_WIDE_INT size ATTRIBUTE_UNUSED)
debug information. Forget that we are in this subspace to ensure
that the next function is output in its own subspace. */
in_section = NULL;
cfun->machine->in_nsubspa = 2;
}
if (INSN_ADDRESSES_SET_P ())
@ -5300,12 +5301,13 @@ static void
output_deferred_plabels (void)
{
size_t i;
/* If we have deferred plabels, then we need to switch into the data
section and align it to a 4 byte boundary before we output the
deferred plabels. */
/* If we have some deferred plabels, then we need to switch into the
data or readonly data section, and align it to a 4 byte boundary
before outputing the deferred plabels. */
if (n_deferred_plabels)
{
switch_to_section (data_section);
switch_to_section (flag_pic ? data_section : readonly_data_section);
ASM_OUTPUT_ALIGN (asm_out_file, TARGET_64BIT ? 3 : 2);
}
@ -7799,6 +7801,15 @@ pa_asm_output_mi_thunk (FILE *file, tree thunk_fndecl, HOST_WIDE_INT delta,
fprintf (file, "\t.EXIT\n\t.PROCEND\n");
if (TARGET_SOM && TARGET_GAS)
{
/* We done with this subspace except possibly for some additional
debug information. Forget that we are in this subspace to ensure
that the next function is output in its own subspace. */
in_section = NULL;
cfun->machine->in_nsubspa = 2;
}
if (TARGET_SOM && flag_pic && TREE_PUBLIC (function))
{
switch_to_section (data_section);
@ -7806,8 +7817,6 @@ pa_asm_output_mi_thunk (FILE *file, tree thunk_fndecl, HOST_WIDE_INT delta,
ASM_OUTPUT_LABEL (file, label);
output_asm_insn (".word P'%0", xoperands);
}
else if (TARGET_SOM && TARGET_GAS)
in_section = NULL;
current_thunk_number++;
nbytes = ((nbytes + FUNCTION_BOUNDARY / BITS_PER_UNIT - 1)
@ -9058,27 +9067,39 @@ som_output_text_section_asm_op (const void *data ATTRIBUTE_UNUSED)
if (cfun->decl
&& DECL_ONE_ONLY (cfun->decl)
&& !DECL_WEAK (cfun->decl))
output_section_asm_op ("\t.SPACE $TEXT$\n"
"\t.NSUBSPA $CODE$,QUAD=0,ALIGN=8,"
"ACCESS=44,SORT=24,COMDAT");
else
output_section_asm_op ("\t.SPACE $TEXT$\n\t.NSUBSPA $CODE$");
return;
{
output_section_asm_op ("\t.SPACE $TEXT$\n"
"\t.NSUBSPA $CODE$,QUAD=0,ALIGN=8,"
"ACCESS=44,SORT=24,COMDAT");
return;
}
}
else
{
/* There isn't a current function or the body of the current
function has been completed. So, we are changing to the
text section to output debugging information. Do this in
the default text section. We need to forget that we are
in the text section so that varasm.c will call us when
text_section is selected again. */
text section to output debugging information. Thus, we
need to forget that we are in the text section so that
varasm.c will call us when text_section is selected again. */
gcc_assert (!cfun || cfun->machine->in_nsubspa == 2);
in_section = NULL;
}
output_section_asm_op ("\t.SPACE $TEXT$\n\t.NSUBSPA $CODE$");
return;
}
output_section_asm_op ("\t.SPACE $TEXT$\n\t.SUBSPA $CODE$");
}
/* A get_unnamed_section callback for switching to comdat data
sections. This function is only used with SOM. */
static void
som_output_comdat_data_section_asm_op (const void *data)
{
in_section = NULL;
output_section_asm_op (data);
}
/* Implement TARGET_ASM_INITIALIZE_SECTIONS */
static void
@ -9097,7 +9118,7 @@ pa_som_asm_init_sections (void)
data one-only by creating a new $LIT$ subspace in $TEXT$ with
the comdat flag. */
som_one_only_readonly_data_section
= get_unnamed_section (0, output_section_asm_op,
= get_unnamed_section (0, som_output_comdat_data_section_asm_op,
"\t.SPACE $TEXT$\n"
"\t.NSUBSPA $LIT$,QUAD=0,ALIGN=8,"
"ACCESS=0x2c,SORT=16,COMDAT");
@ -9106,7 +9127,8 @@ pa_som_asm_init_sections (void)
/* When secondary definitions are not supported, SOM makes data one-only
by creating a new $DATA$ subspace in $PRIVATE$ with the comdat flag. */
som_one_only_data_section
= get_unnamed_section (SECTION_WRITE, output_section_asm_op,
= get_unnamed_section (SECTION_WRITE,
som_output_comdat_data_section_asm_op,
"\t.SPACE $PRIVATE$\n"
"\t.NSUBSPA $DATA$,QUAD=1,ALIGN=8,"
"ACCESS=31,SORT=24,COMDAT");