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* symfile.c (sections_overlap): New function.

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(map_overlay_command): Call sections_overlap, instead of using
incorrect logic to recognize overlapping sections.
This commit is contained in:
Jim Blandy 2001-08-31 00:40:45 +00:00
parent 2889e66104
commit 9ec8e6a002
2 changed files with 24 additions and 5 deletions
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4
gdb/ChangeLog
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@ -1,5 +1,9 @@
2001-08-30 Jim Blandy <jimb@redhat.com>
* symfile.c (sections_overlap): New function.
(map_overlay_command): Call sections_overlap, instead of using
incorrect logic to recognize overlapping sections.
* symfile.c (load_command): Invalidate the overlay cache.
2001-08-30 Mark Kettenis <kettenis@gnu.org>

25
gdb/symfile.c
View File

@ -2490,6 +2490,7 @@ init_psymbol_list (struct objfile *objfile, int total_symbols)
section_is_overlay(sect): true if section's VMA != LMA
pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA
pc_in_unmapped_range(...): true if pc belongs to section's LMA
sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap
overlay_mapped_address(...): map an address from section's LMA to VMA
overlay_unmapped_address(...): map an address from section's VMA to LMA
symbol_overlayed_address(...): Return a "current" address for symbol:
@ -2629,6 +2630,20 @@ pc_in_mapped_range (CORE_ADDR pc, asection *section)
return 0;
}
/* Return true if the mapped ranges of sections A and B overlap, false
otherwise. */
int
sections_overlap (asection *a, asection *b)
{
CORE_ADDR a_start = a->vma;
CORE_ADDR a_end = a->vma + bfd_get_section_size_before_reloc (a);
CORE_ADDR b_start = b->vma;
CORE_ADDR b_end = b->vma + bfd_get_section_size_before_reloc (b);
return (a_start < b_end && b_start < a_end);
}
/* Function: overlay_unmapped_address (PC, SECTION)
Returns the address corresponding to PC in the unmapped (load) range.
May be the same as PC. */
@ -2807,11 +2822,11 @@ the 'overlay manual' command.");
/* Next, make a pass and unmap any sections that are
overlapped by this new section: */
ALL_OBJSECTIONS (objfile2, sec2)
if (sec2->ovly_mapped &&
sec != sec2 &&
sec->the_bfd_section != sec2->the_bfd_section &&
(pc_in_mapped_range (sec2->addr, sec->the_bfd_section) ||
pc_in_mapped_range (sec2->endaddr, sec->the_bfd_section)))
if (sec2->ovly_mapped
&& sec != sec2
&& sec->the_bfd_section != sec2->the_bfd_section
&& sections_overlap (sec->the_bfd_section,
sec2->the_bfd_section))
{
if (info_verbose)
printf_filtered ("Note: section %s unmapped by overlap\n",