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Re: Error: attempt to get value of unresolved symbol `L0'

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* symbols.c (S_GET_VALUE): If the unresolved symbol is the fake
	label provide a more helpful error message to the user.
	(S_GET_VALUE_WHERE): Like S_GET_VALUE, but includes a file/line
	number for error reporting purposes.
	* symbols.h (S_GET_VALUE_WHERE): Prototype.
	* write.c (fixup_segment): Use S_GET_VALUE_WHERE.
This commit is contained in:
Nick Clifton
2022-10-11 15:28:10 +01:00
parent babcfd7588
commit 12509439a1
4 changed files with 26 additions and 10 deletions
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18
gas/write.c
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@@ -972,16 +972,18 @@ fixup_segment (fixS *fixP, segT this_segment)
if (fixP->fx_subsy != NULL)
{
segT sub_symbol_segment;
resolve_symbol_value (fixP->fx_subsy);
sub_symbol_segment = S_GET_SEGMENT (fixP->fx_subsy);
if (fixP->fx_addsy != NULL
&& sub_symbol_segment == add_symbol_segment
&& !S_FORCE_RELOC (fixP->fx_addsy, 0)
&& !S_FORCE_RELOC (fixP->fx_subsy, 0)
&& !TC_FORCE_RELOCATION_SUB_SAME (fixP, add_symbol_segment))
{
add_number += S_GET_VALUE (fixP->fx_addsy);
add_number -= S_GET_VALUE (fixP->fx_subsy);
add_number += S_GET_VALUE_WHERE (fixP->fx_addsy, fixP->fx_file, fixP->fx_line);
add_number -= S_GET_VALUE_WHERE (fixP->fx_subsy, fixP->fx_file, fixP->fx_line);
fixP->fx_offset = add_number;
fixP->fx_addsy = NULL;
fixP->fx_subsy = NULL;
@@ -994,7 +996,7 @@ fixup_segment (fixS *fixP, segT this_segment)
&& !S_FORCE_RELOC (fixP->fx_subsy, 0)
&& !TC_FORCE_RELOCATION_SUB_ABS (fixP, add_symbol_segment))
{
add_number -= S_GET_VALUE (fixP->fx_subsy);
add_number -= S_GET_VALUE_WHERE (fixP->fx_subsy, fixP->fx_file, fixP->fx_line);
fixP->fx_offset = add_number;
fixP->fx_subsy = NULL;
}
@@ -1002,7 +1004,7 @@ fixup_segment (fixS *fixP, segT this_segment)
&& !S_FORCE_RELOC (fixP->fx_subsy, 0)
&& !TC_FORCE_RELOCATION_SUB_LOCAL (fixP, add_symbol_segment))
{
add_number -= S_GET_VALUE (fixP->fx_subsy);
add_number -= S_GET_VALUE_WHERE (fixP->fx_subsy, fixP->fx_file, fixP->fx_line);
fixP->fx_offset = (add_number + fixP->fx_dot_value
+ fixP->fx_dot_frag->fr_address);
@@ -1035,7 +1037,7 @@ fixup_segment (fixS *fixP, segT this_segment)
else if (sub_symbol_segment != undefined_section
&& ! bfd_is_com_section (sub_symbol_segment)
&& MD_APPLY_SYM_VALUE (fixP))
add_number -= S_GET_VALUE (fixP->fx_subsy);
add_number -= S_GET_VALUE_WHERE (fixP->fx_subsy, fixP->fx_file, fixP->fx_line);
}
if (fixP->fx_addsy)
@@ -1047,7 +1049,7 @@ fixup_segment (fixS *fixP, segT this_segment)
/* This fixup was made when the symbol's segment was
SEG_UNKNOWN, but it is now in the local segment.
So we know how to do the address without relocation. */
add_number += S_GET_VALUE (fixP->fx_addsy);
add_number += S_GET_VALUE_WHERE (fixP->fx_addsy, fixP->fx_file, fixP->fx_line);
fixP->fx_offset = add_number;
if (fixP->fx_pcrel)
add_number -= MD_PCREL_FROM_SECTION (fixP, this_segment);
@@ -1058,14 +1060,14 @@ fixup_segment (fixS *fixP, segT this_segment)
&& !S_FORCE_RELOC (fixP->fx_addsy, 0)
&& !TC_FORCE_RELOCATION_ABS (fixP))
{
add_number += S_GET_VALUE (fixP->fx_addsy);
add_number += S_GET_VALUE_WHERE (fixP->fx_addsy, fixP->fx_file, fixP->fx_line);
fixP->fx_offset = add_number;
fixP->fx_addsy = NULL;
}
else if (add_symbol_segment != undefined_section
&& ! bfd_is_com_section (add_symbol_segment)
&& MD_APPLY_SYM_VALUE (fixP))
add_number += S_GET_VALUE (fixP->fx_addsy);
add_number += S_GET_VALUE_WHERE (fixP->fx_addsy, fixP->fx_file, fixP->fx_line);
}
if (fixP->fx_pcrel)