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Allow multiple partial symbol readers per objfile

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This patch finally changes gdb so that an objfile can have multiple
sources of partial symbols (or mixed partial symbols and other kinds
of indices).

This is done by having each symbol reader create its own
psymbol_functions object and add it to the 'qf' list in the objfile.

gdb/ChangeLog
2021-03-20  Tom Tromey  <tom@tromey.com>

	* xcoffread.c (xcoff_initial_scan): Create partial symtabs.
	* symfile.c (syms_from_objfile_1, reread_symbols): Update.
	* psymtab.h (make_psymbol_functions): Don't declare.
	* psymtab.c (make_psymbol_functions): Remove.
	(maintenance_print_psymbols): Update.
	* psympriv.h (struct psymbol_functions): Add no-argument
	constructor.
	* objfiles.h (struct objfile) <reset_psymtabs>: Remove.
	<partial_symtabs>: Remove.
	* mdebugread.c (mdebug_build_psymtabs): Create partial symtabs.
	* elfread.c (read_partial_symbols): Update.
	(elf_symfile_read): Remove check for existing partial symbols.
	Don't clear "qf".
	* dwarf2/read.c (dwarf2_has_info): Remove check for existing
	partial symbols.
	(dwarf2_build_psymtabs): Add psymbol_functions parameter.  Create
	partial symtabs.
	* dwarf2/public.h (dwarf2_build_psymtabs): Add psymbol_functions
	parameter.
	* dbxread.c (dbx_symfile_read): Create partial symtabs.
	* ctfread.c (elfctf_build_psymtabs): Create partial symtabs.
This commit is contained in:
Tom Tromey 2021-03-20 17:23:40 -06:00
parent e11145903f
commit eb36a3eb2f
13 changed files with 67 additions and 61 deletions
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11
gdb/objfiles.h
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@ -447,13 +447,6 @@ public:
DISABLE_COPY_AND_ASSIGN (objfile);
/* Reset the storage for the partial symbol tables. */
void reset_psymtabs ()
{
partial_symtabs.reset (new psymtab_storage ());
}
typedef next_adapter<struct compunit_symtab> compunits_range;
/* A range adapter that makes it possible to iterate over all
@ -635,10 +628,6 @@ public:
struct compunit_symtab *compunit_symtabs = nullptr;
/* The partial symbol tables. */
std::shared_ptr<psymtab_storage> partial_symtabs;
/* The object file's BFD. Can be null if the objfile contains only
minimal symbols, e.g. the run time common symbols for SunOS4. */