/* External variables and functions referenced. */
-extern int info_verbose;
-
extern void report_transfer_performance (unsigned long, time_t, time_t);
/* Functions this file defines */
int symbol_reloading = 0;
#endif
-/* If non-zero, then on HP-UX (i.e., platforms that use somsolib.c),
- this variable is interpreted as a threshhold. If adding a new
- library's symbol table to those already known to the debugger would
- exceed this threshhold, then the shlib's symbols are not added.
-
- If non-zero on other platforms, shared library symbols will be added
- automatically when the inferior is created, new libraries are loaded,
- or when attaching to the inferior. This is almost always what users
- will want to have happen; but for very large programs, the startup
- time will be excessive, and so if this is a problem, the user can
- clear this flag and then add the shared library symbols as needed.
- Note that there is a potential for confusion, since if the shared
+/* If non-zero, shared library symbols will be added automatically
+ when the inferior is created, new libraries are loaded, or when
+ attaching to the inferior. This is almost always what users will
+ want to have happen; but for very large programs, the startup time
+ will be excessive, and so if this is a problem, the user can clear
+ this flag and then add the shared library symbols as needed. Note
+ that there is a potential for confusion, since if the shared
library symbols are not loaded, commands like "info fun" will *not*
- report all the functions that are actually present.
-
- Note that HP-UX interprets this variable to mean, "threshhold size
- in megabytes, where zero means never add". Other platforms interpret
- this variable to mean, "always add if non-zero, never add if zero."
- */
+ report all the functions that are actually present. */
int auto_solib_add = 1;
+
+/* For systems that support it, a threshold size in megabytes. If
+ automatically adding a new library's symbol table to those already
+ known to the debugger would cause the total shared library symbol
+ size to exceed this threshhold, then the shlib's symbols are not
+ added. The threshold is ignored if the user explicitly asks for a
+ shlib to be added, such as when using the "sharedlibrary"
+ command. */
+
+int auto_solib_limit;
\f
/* Since this function is called from within qsort, in an ANSI environment
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:
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. */
/* 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",
static int
simple_read_overlay_table (void)
{
- struct minimal_symbol *msym;
+ struct minimal_symbol *novlys_msym, *ovly_table_msym;
simple_free_overlay_table ();
- msym = lookup_minimal_symbol ("_novlys", 0, 0);
- if (msym != NULL)
- cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4);
- else
- return 0; /* failure */
- cache_ovly_table = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table));
- if (cache_ovly_table != NULL)
+ novlys_msym = lookup_minimal_symbol ("_novlys", 0, 0);
+ if (! novlys_msym)
{
- msym = lookup_minimal_symbol ("_ovly_table", 0, 0);
- if (msym != NULL)
- {
- cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (msym);
- read_target_long_array (cache_ovly_table_base,
- (int *) cache_ovly_table,
- cache_novlys * 4);
- }
- else
- return 0; /* failure */
+ error ("Error reading inferior's overlay table: "
+ "couldn't find `_novlys' variable\n"
+ "in inferior. Use `overlay manual' mode.");
+ return 0;
}
- else
- return 0; /* failure */
+
+ ovly_table_msym = lookup_minimal_symbol ("_ovly_table", 0, 0);
+ if (! ovly_table_msym)
+ {
+ error ("Error reading inferior's overlay table: couldn't find "
+ "`_ovly_table' array\n"
+ "in inferior. Use `overlay manual' mode.");
+ return 0;
+ }
+
+ cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), 4);
+ cache_ovly_table
+ = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table));
+ cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym);
+ read_target_long_array (cache_ovly_table_base,
+ (int *) cache_ovly_table,
+ cache_novlys * 4);
+
return 1; /* SUCCESS */
}
Or else we want all the sections, in which case it's actually
more efficient to read the whole table in one block anyway. */
- if (simple_read_overlay_table () == 0) /* read failed? No table? */
- {
- warning ("Failed to read the target overlay mapping table.");
- return;
- }
+ if (! simple_read_overlay_table ())
+ return;
+
/* Now may as well update all sections, even if only one was requested. */
ALL_OBJSECTIONS (objfile, osect)
if (section_is_overlay (osect->the_bfd_section))
projects / deliverable / binutils-gdb.git / blobdiff