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* options.h (class General_options): Define --check-sections.

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* layout.cc (Layout::set_segment_offsets): Handle
	--check-sections.
This commit is contained in:
Ian Lance Taylor 2008-07-22 23:55:24 +00:00
parent af6156ef8d
commit 3481085102
3 changed files with 30 additions and 0 deletions
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4
gold/ChangeLog
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@ -1,5 +1,9 @@
2008-07-22 Ian Lance Taylor <iant@google.com> 2008-07-22 Ian Lance Taylor <iant@google.com>
* options.h (class General_options): Define --check-sections.
* layout.cc (Layout::set_segment_offsets): Handle
--check-sections.
* options.h (class General_options): Define -n/--nmagic and * options.h (class General_options): Define -n/--nmagic and
-N/--omagic. -N/--omagic.
* options.cc (General_options::finalize): For -n/--nmagic or * options.cc (General_options::finalize): For -n/--nmagic or

22
gold/layout.cc
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@ -1732,6 +1732,9 @@ Layout::set_segment_offsets(const Target* target, Output_segment* load_seg,
} }
} }
const bool check_sections = parameters->options().check_sections();
Output_segment* last_load_segment = NULL;
bool was_readonly = false; bool was_readonly = false;
for (Segment_list::iterator p = this->segment_list_.begin(); for (Segment_list::iterator p = this->segment_list_.begin();
p != this->segment_list_.end(); p != this->segment_list_.end();
@ -1848,6 +1851,25 @@ Layout::set_segment_offsets(const Target* target, Output_segment* load_seg,
if (((*p)->flags() & elfcpp::PF_W) == 0) if (((*p)->flags() & elfcpp::PF_W) == 0)
was_readonly = true; was_readonly = true;
// Implement --check-sections. We know that the segments
// are sorted by LMA.
if (check_sections && last_load_segment != NULL)
{
gold_assert(last_load_segment->paddr() <= (*p)->paddr());
if (last_load_segment->paddr() + last_load_segment->memsz()
> (*p)->paddr())
{
unsigned long long lb1 = last_load_segment->paddr();
unsigned long long le1 = lb1 + last_load_segment->memsz();
unsigned long long lb2 = (*p)->paddr();
unsigned long long le2 = lb2 + (*p)->memsz();
gold_error(_("load segment overlap [0x%llx -> 0x%llx] and "
"[0x%llx -> 0x%llx]"),
lb1, le1, lb2, le2);
}
}
last_load_segment = *p;
} }
} }

4
gold/options.h
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@ -576,6 +576,10 @@ class General_options
N_("Generate build ID note"), N_("Generate build ID note"),
N_("[=STYLE]")); N_("[=STYLE]"));
DEFINE_bool(check_sections, options::TWO_DASHES, '\0', true,
N_("Check segment addresses for overlaps (default)"),
N_("Do not check segment addresses for overlaps"));
#ifdef HAVE_ZLIB_H #ifdef HAVE_ZLIB_H
DEFINE_enum(compress_debug_sections, options::TWO_DASHES, '\0', "none", DEFINE_enum(compress_debug_sections, options::TWO_DASHES, '\0', "none",
N_("Compress .debug_* sections in the output file"), N_("Compress .debug_* sections in the output file"),