mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-06 00:34:26 +08:00
4de283e4b5
Andreas Schwab and John Baldwin pointed out some bugs in the header sorting patch; and I noticed that the output was not correct when limited to a subset of files (a bug in my script). So, I'm reverting the patch. I may try again after fixing the issues pointed out. gdb/ChangeLog 2019-04-05 Tom Tromey <tom@tromey.com> Revert the header-sorting patch. * ft32-tdep.c: Revert. * frv-tdep.c: Revert. * frv-linux-tdep.c: Revert. * frame.c: Revert. * frame-unwind.c: Revert. * frame-base.c: Revert. * fork-child.c: Revert. * findvar.c: Revert. * findcmd.c: Revert. * filesystem.c: Revert. * filename-seen-cache.h: Revert. * filename-seen-cache.c: Revert. * fbsd-tdep.c: Revert. * fbsd-nat.h: Revert. * fbsd-nat.c: Revert. * f-valprint.c: Revert. * f-typeprint.c: Revert. * f-lang.c: Revert. * extension.h: Revert. * extension.c: Revert. * extension-priv.h: Revert. * expprint.c: Revert. * exec.h: Revert. * exec.c: Revert. * exceptions.c: Revert. * event-top.c: Revert. * event-loop.c: Revert. * eval.c: Revert. * elfread.c: Revert. * dwarf2read.h: Revert. * dwarf2read.c: Revert. * dwarf2loc.c: Revert. * dwarf2expr.h: Revert. * dwarf2expr.c: Revert. * dwarf2-frame.c: Revert. * dwarf2-frame-tailcall.c: Revert. * dwarf-index-write.h: Revert. * dwarf-index-write.c: Revert. * dwarf-index-common.c: Revert. * dwarf-index-cache.h: Revert. * dwarf-index-cache.c: Revert. * dummy-frame.c: Revert. * dtrace-probe.c: Revert. * disasm.h: Revert. * disasm.c: Revert. * disasm-selftests.c: Revert. * dictionary.c: Revert. * dicos-tdep.c: Revert. * demangle.c: Revert. * dcache.h: Revert. * dcache.c: Revert. * darwin-nat.h: Revert. * darwin-nat.c: Revert. * darwin-nat-info.c: Revert. * d-valprint.c: Revert. * d-namespace.c: Revert. * d-lang.c: Revert. * ctf.c: Revert. * csky-tdep.c: Revert. * csky-linux-tdep.c: Revert. * cris-tdep.c: Revert. * cris-linux-tdep.c: Revert. * cp-valprint.c: Revert. * cp-support.c: Revert. * cp-namespace.c: Revert. * cp-abi.c: Revert. * corelow.c: Revert. * corefile.c: Revert. * continuations.c: Revert. * completer.h: Revert. * completer.c: Revert. * complaints.c: Revert. * coffread.c: Revert. * coff-pe-read.c: Revert. * cli-out.h: Revert. * cli-out.c: Revert. * charset.c: Revert. * c-varobj.c: Revert. * c-valprint.c: Revert. * c-typeprint.c: Revert. * c-lang.c: Revert. * buildsym.c: Revert. * buildsym-legacy.c: Revert. * build-id.h: Revert. * build-id.c: Revert. * btrace.c: Revert. * bsd-uthread.c: Revert. * breakpoint.h: Revert. * breakpoint.c: Revert. * break-catch-throw.c: Revert. * break-catch-syscall.c: Revert. * break-catch-sig.c: Revert. * blockframe.c: Revert. * block.c: Revert. * bfin-tdep.c: Revert. * bfin-linux-tdep.c: Revert. * bfd-target.c: Revert. * bcache.c: Revert. * ax-general.c: Revert. * ax-gdb.h: Revert. * ax-gdb.c: Revert. * avr-tdep.c: Revert. * auxv.c: Revert. * auto-load.c: Revert. * arm-wince-tdep.c: Revert. * arm-tdep.c: Revert. * arm-symbian-tdep.c: Revert. * arm-pikeos-tdep.c: Revert. * arm-obsd-tdep.c: Revert. * arm-nbsd-tdep.c: Revert. * arm-nbsd-nat.c: Revert. * arm-linux-tdep.c: Revert. * arm-linux-nat.c: Revert. * arm-fbsd-tdep.c: Revert. * arm-fbsd-nat.c: Revert. * arm-bsd-tdep.c: Revert. * arch-utils.c: Revert. * arc-tdep.c: Revert. * arc-newlib-tdep.c: Revert. * annotate.h: Revert. * annotate.c: Revert. * amd64-windows-tdep.c: Revert. * amd64-windows-nat.c: Revert. * amd64-tdep.c: Revert. * amd64-sol2-tdep.c: Revert. * amd64-obsd-tdep.c: Revert. * amd64-obsd-nat.c: Revert. * amd64-nbsd-tdep.c: Revert. * amd64-nbsd-nat.c: Revert. * amd64-nat.c: Revert. * amd64-linux-tdep.c: Revert. * amd64-linux-nat.c: Revert. * amd64-fbsd-tdep.c: Revert. * amd64-fbsd-nat.c: Revert. * amd64-dicos-tdep.c: Revert. * amd64-darwin-tdep.c: Revert. * amd64-bsd-nat.c: Revert. * alpha-tdep.c: Revert. * alpha-obsd-tdep.c: Revert. * alpha-nbsd-tdep.c: Revert. * alpha-mdebug-tdep.c: Revert. * alpha-linux-tdep.c: Revert. * alpha-linux-nat.c: Revert. * alpha-bsd-tdep.c: Revert. * alpha-bsd-nat.c: Revert. * aix-thread.c: Revert. * agent.c: Revert. * addrmap.c: Revert. * ada-varobj.c: Revert. * ada-valprint.c: Revert. * ada-typeprint.c: Revert. * ada-tasks.c: Revert. * ada-lang.c: Revert. * aarch64-tdep.c: Revert. * aarch64-ravenscar-thread.c: Revert. * aarch64-newlib-tdep.c: Revert. * aarch64-linux-tdep.c: Revert. * aarch64-linux-nat.c: Revert. * aarch64-fbsd-tdep.c: Revert. * aarch64-fbsd-nat.c: Revert. * aarch32-linux-nat.c: Revert.
834 lines
22 KiB
C
834 lines
22 KiB
C
/* Block-related functions for the GNU debugger, GDB.
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Copyright (C) 2003-2019 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
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||
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||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
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||
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "block.h"
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#include "symtab.h"
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#include "symfile.h"
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#include "gdb_obstack.h"
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#include "cp-support.h"
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#include "addrmap.h"
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#include "gdbtypes.h"
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#include "objfiles.h"
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/* This is used by struct block to store namespace-related info for
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C++ files, namely using declarations and the current namespace in
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scope. */
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struct block_namespace_info : public allocate_on_obstack
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{
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const char *scope = nullptr;
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struct using_direct *using_decl = nullptr;
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};
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static void block_initialize_namespace (struct block *block,
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struct obstack *obstack);
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/* See block.h. */
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struct objfile *
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block_objfile (const struct block *block)
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{
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const struct global_block *global_block;
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if (BLOCK_FUNCTION (block) != NULL)
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return symbol_objfile (BLOCK_FUNCTION (block));
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global_block = (struct global_block *) block_global_block (block);
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return COMPUNIT_OBJFILE (global_block->compunit_symtab);
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}
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/* See block. */
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struct gdbarch *
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block_gdbarch (const struct block *block)
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{
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if (BLOCK_FUNCTION (block) != NULL)
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return symbol_arch (BLOCK_FUNCTION (block));
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return get_objfile_arch (block_objfile (block));
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}
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/* Return Nonzero if block a is lexically nested within block b,
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or if a and b have the same pc range.
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Return zero otherwise. */
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int
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contained_in (const struct block *a, const struct block *b)
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{
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if (!a || !b)
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return 0;
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do
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{
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if (a == b)
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return 1;
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/* If A is a function block, then A cannot be contained in B,
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except if A was inlined. */
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if (BLOCK_FUNCTION (a) != NULL && !block_inlined_p (a))
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return 0;
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a = BLOCK_SUPERBLOCK (a);
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}
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while (a != NULL);
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return 0;
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}
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/* Return the symbol for the function which contains a specified
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lexical block, described by a struct block BL. The return value
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will not be an inlined function; the containing function will be
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returned instead. */
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struct symbol *
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block_linkage_function (const struct block *bl)
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{
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while ((BLOCK_FUNCTION (bl) == NULL || block_inlined_p (bl))
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&& BLOCK_SUPERBLOCK (bl) != NULL)
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bl = BLOCK_SUPERBLOCK (bl);
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return BLOCK_FUNCTION (bl);
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}
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/* Return the symbol for the function which contains a specified
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block, described by a struct block BL. The return value will be
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the closest enclosing function, which might be an inline
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function. */
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struct symbol *
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block_containing_function (const struct block *bl)
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{
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while (BLOCK_FUNCTION (bl) == NULL && BLOCK_SUPERBLOCK (bl) != NULL)
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bl = BLOCK_SUPERBLOCK (bl);
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return BLOCK_FUNCTION (bl);
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}
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/* Return one if BL represents an inlined function. */
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int
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block_inlined_p (const struct block *bl)
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{
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return BLOCK_FUNCTION (bl) != NULL && SYMBOL_INLINED (BLOCK_FUNCTION (bl));
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}
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/* A helper function that checks whether PC is in the blockvector BL.
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It returns the containing block if there is one, or else NULL. */
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static const struct block *
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find_block_in_blockvector (const struct blockvector *bl, CORE_ADDR pc)
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{
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const struct block *b;
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int bot, top, half;
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/* If we have an addrmap mapping code addresses to blocks, then use
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that. */
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if (BLOCKVECTOR_MAP (bl))
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return (const struct block *) addrmap_find (BLOCKVECTOR_MAP (bl), pc);
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/* Otherwise, use binary search to find the last block that starts
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before PC.
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Note: GLOBAL_BLOCK is block 0, STATIC_BLOCK is block 1.
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They both have the same START,END values.
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Historically this code would choose STATIC_BLOCK over GLOBAL_BLOCK but the
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fact that this choice was made was subtle, now we make it explicit. */
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gdb_assert (BLOCKVECTOR_NBLOCKS (bl) >= 2);
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bot = STATIC_BLOCK;
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top = BLOCKVECTOR_NBLOCKS (bl);
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while (top - bot > 1)
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{
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half = (top - bot + 1) >> 1;
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b = BLOCKVECTOR_BLOCK (bl, bot + half);
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if (BLOCK_START (b) <= pc)
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bot += half;
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else
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top = bot + half;
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}
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/* Now search backward for a block that ends after PC. */
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while (bot >= STATIC_BLOCK)
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{
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b = BLOCKVECTOR_BLOCK (bl, bot);
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if (BLOCK_END (b) > pc)
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return b;
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bot--;
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}
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return NULL;
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}
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/* Return the blockvector immediately containing the innermost lexical
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block containing the specified pc value and section, or 0 if there
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is none. PBLOCK is a pointer to the block. If PBLOCK is NULL, we
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don't pass this information back to the caller. */
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const struct blockvector *
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blockvector_for_pc_sect (CORE_ADDR pc, struct obj_section *section,
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const struct block **pblock,
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struct compunit_symtab *cust)
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{
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const struct blockvector *bl;
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const struct block *b;
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if (cust == NULL)
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{
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/* First search all symtabs for one whose file contains our pc */
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cust = find_pc_sect_compunit_symtab (pc, section);
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if (cust == NULL)
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return 0;
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}
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bl = COMPUNIT_BLOCKVECTOR (cust);
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/* Then search that symtab for the smallest block that wins. */
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b = find_block_in_blockvector (bl, pc);
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if (b == NULL)
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return NULL;
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if (pblock)
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*pblock = b;
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return bl;
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}
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/* Return true if the blockvector BV contains PC, false otherwise. */
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int
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blockvector_contains_pc (const struct blockvector *bv, CORE_ADDR pc)
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{
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return find_block_in_blockvector (bv, pc) != NULL;
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}
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/* Return call_site for specified PC in GDBARCH. PC must match exactly, it
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must be the next instruction after call (or after tail call jump). Throw
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NO_ENTRY_VALUE_ERROR otherwise. This function never returns NULL. */
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struct call_site *
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call_site_for_pc (struct gdbarch *gdbarch, CORE_ADDR pc)
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{
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struct compunit_symtab *cust;
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void **slot = NULL;
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/* -1 as tail call PC can be already after the compilation unit range. */
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cust = find_pc_compunit_symtab (pc - 1);
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if (cust != NULL && COMPUNIT_CALL_SITE_HTAB (cust) != NULL)
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slot = htab_find_slot (COMPUNIT_CALL_SITE_HTAB (cust), &pc, NO_INSERT);
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if (slot == NULL)
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{
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struct bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (pc);
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/* DW_TAG_gnu_call_site will be missing just if GCC could not determine
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the call target. */
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throw_error (NO_ENTRY_VALUE_ERROR,
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_("DW_OP_entry_value resolving cannot find "
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"DW_TAG_call_site %s in %s"),
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paddress (gdbarch, pc),
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(msym.minsym == NULL ? "???"
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: MSYMBOL_PRINT_NAME (msym.minsym)));
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}
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return (struct call_site *) *slot;
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}
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/* Return the blockvector immediately containing the innermost lexical block
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containing the specified pc value, or 0 if there is none.
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Backward compatibility, no section. */
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const struct blockvector *
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blockvector_for_pc (CORE_ADDR pc, const struct block **pblock)
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{
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return blockvector_for_pc_sect (pc, find_pc_mapped_section (pc),
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pblock, NULL);
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}
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/* Return the innermost lexical block containing the specified pc value
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in the specified section, or 0 if there is none. */
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const struct block *
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block_for_pc_sect (CORE_ADDR pc, struct obj_section *section)
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{
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const struct blockvector *bl;
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const struct block *b;
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bl = blockvector_for_pc_sect (pc, section, &b, NULL);
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if (bl)
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return b;
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return 0;
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}
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/* Return the innermost lexical block containing the specified pc value,
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or 0 if there is none. Backward compatibility, no section. */
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const struct block *
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block_for_pc (CORE_ADDR pc)
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{
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return block_for_pc_sect (pc, find_pc_mapped_section (pc));
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}
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/* Now come some functions designed to deal with C++ namespace issues.
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The accessors are safe to use even in the non-C++ case. */
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/* This returns the namespace that BLOCK is enclosed in, or "" if it
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isn't enclosed in a namespace at all. This travels the chain of
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superblocks looking for a scope, if necessary. */
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const char *
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block_scope (const struct block *block)
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{
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for (; block != NULL; block = BLOCK_SUPERBLOCK (block))
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{
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if (BLOCK_NAMESPACE (block) != NULL
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&& BLOCK_NAMESPACE (block)->scope != NULL)
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return BLOCK_NAMESPACE (block)->scope;
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}
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return "";
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}
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/* Set BLOCK's scope member to SCOPE; if needed, allocate memory via
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OBSTACK. (It won't make a copy of SCOPE, however, so that already
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has to be allocated correctly.) */
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|
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void
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block_set_scope (struct block *block, const char *scope,
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struct obstack *obstack)
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{
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block_initialize_namespace (block, obstack);
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BLOCK_NAMESPACE (block)->scope = scope;
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}
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/* This returns the using directives list associated with BLOCK, if
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any. */
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struct using_direct *
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block_using (const struct block *block)
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{
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if (block == NULL || BLOCK_NAMESPACE (block) == NULL)
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return NULL;
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else
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return BLOCK_NAMESPACE (block)->using_decl;
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}
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|
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/* Set BLOCK's using member to USING; if needed, allocate memory via
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OBSTACK. (It won't make a copy of USING, however, so that already
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has to be allocated correctly.) */
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|
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void
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block_set_using (struct block *block,
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struct using_direct *using_decl,
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struct obstack *obstack)
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{
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block_initialize_namespace (block, obstack);
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BLOCK_NAMESPACE (block)->using_decl = using_decl;
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}
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|
||
/* If BLOCK_NAMESPACE (block) is NULL, allocate it via OBSTACK and
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ititialize its members to zero. */
|
||
|
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static void
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block_initialize_namespace (struct block *block, struct obstack *obstack)
|
||
{
|
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if (BLOCK_NAMESPACE (block) == NULL)
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BLOCK_NAMESPACE (block) = new (obstack) struct block_namespace_info ();
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}
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|
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/* Return the static block associated to BLOCK. Return NULL if block
|
||
is NULL or if block is a global block. */
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||
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const struct block *
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block_static_block (const struct block *block)
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||
{
|
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if (block == NULL || BLOCK_SUPERBLOCK (block) == NULL)
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return NULL;
|
||
|
||
while (BLOCK_SUPERBLOCK (BLOCK_SUPERBLOCK (block)) != NULL)
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||
block = BLOCK_SUPERBLOCK (block);
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||
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return block;
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||
}
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||
|
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/* Return the static block associated to BLOCK. Return NULL if block
|
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is NULL. */
|
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|
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const struct block *
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||
block_global_block (const struct block *block)
|
||
{
|
||
if (block == NULL)
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return NULL;
|
||
|
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while (BLOCK_SUPERBLOCK (block) != NULL)
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block = BLOCK_SUPERBLOCK (block);
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return block;
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}
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|
||
/* Allocate a block on OBSTACK, and initialize its elements to
|
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zero/NULL. This is useful for creating "dummy" blocks that don't
|
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correspond to actual source files.
|
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|
||
Warning: it sets the block's BLOCK_MULTIDICT to NULL, which isn't a
|
||
valid value. If you really don't want the block to have a
|
||
dictionary, then you should subsequently set its BLOCK_MULTIDICT to
|
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dict_create_linear (obstack, NULL). */
|
||
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||
struct block *
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||
allocate_block (struct obstack *obstack)
|
||
{
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struct block *bl = OBSTACK_ZALLOC (obstack, struct block);
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||
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||
return bl;
|
||
}
|
||
|
||
/* Allocate a global block. */
|
||
|
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struct block *
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||
allocate_global_block (struct obstack *obstack)
|
||
{
|
||
struct global_block *bl = OBSTACK_ZALLOC (obstack, struct global_block);
|
||
|
||
return &bl->block;
|
||
}
|
||
|
||
/* Set the compunit of the global block. */
|
||
|
||
void
|
||
set_block_compunit_symtab (struct block *block, struct compunit_symtab *cu)
|
||
{
|
||
struct global_block *gb;
|
||
|
||
gdb_assert (BLOCK_SUPERBLOCK (block) == NULL);
|
||
gb = (struct global_block *) block;
|
||
gdb_assert (gb->compunit_symtab == NULL);
|
||
gb->compunit_symtab = cu;
|
||
}
|
||
|
||
/* See block.h. */
|
||
|
||
struct dynamic_prop *
|
||
block_static_link (const struct block *block)
|
||
{
|
||
struct objfile *objfile = block_objfile (block);
|
||
|
||
/* Only objfile-owned blocks that materialize top function scopes can have
|
||
static links. */
|
||
if (objfile == NULL || BLOCK_FUNCTION (block) == NULL)
|
||
return NULL;
|
||
|
||
return (struct dynamic_prop *) objfile_lookup_static_link (objfile, block);
|
||
}
|
||
|
||
/* Return the compunit of the global block. */
|
||
|
||
static struct compunit_symtab *
|
||
get_block_compunit_symtab (const struct block *block)
|
||
{
|
||
struct global_block *gb;
|
||
|
||
gdb_assert (BLOCK_SUPERBLOCK (block) == NULL);
|
||
gb = (struct global_block *) block;
|
||
gdb_assert (gb->compunit_symtab != NULL);
|
||
return gb->compunit_symtab;
|
||
}
|
||
|
||
|
||
|
||
/* Initialize a block iterator, either to iterate over a single block,
|
||
or, for static and global blocks, all the included symtabs as
|
||
well. */
|
||
|
||
static void
|
||
initialize_block_iterator (const struct block *block,
|
||
struct block_iterator *iter)
|
||
{
|
||
enum block_enum which;
|
||
struct compunit_symtab *cu;
|
||
|
||
iter->idx = -1;
|
||
|
||
if (BLOCK_SUPERBLOCK (block) == NULL)
|
||
{
|
||
which = GLOBAL_BLOCK;
|
||
cu = get_block_compunit_symtab (block);
|
||
}
|
||
else if (BLOCK_SUPERBLOCK (BLOCK_SUPERBLOCK (block)) == NULL)
|
||
{
|
||
which = STATIC_BLOCK;
|
||
cu = get_block_compunit_symtab (BLOCK_SUPERBLOCK (block));
|
||
}
|
||
else
|
||
{
|
||
iter->d.block = block;
|
||
/* A signal value meaning that we're iterating over a single
|
||
block. */
|
||
iter->which = FIRST_LOCAL_BLOCK;
|
||
return;
|
||
}
|
||
|
||
/* If this is an included symtab, find the canonical includer and
|
||
use it instead. */
|
||
while (cu->user != NULL)
|
||
cu = cu->user;
|
||
|
||
/* Putting this check here simplifies the logic of the iterator
|
||
functions. If there are no included symtabs, we only need to
|
||
search a single block, so we might as well just do that
|
||
directly. */
|
||
if (cu->includes == NULL)
|
||
{
|
||
iter->d.block = block;
|
||
/* A signal value meaning that we're iterating over a single
|
||
block. */
|
||
iter->which = FIRST_LOCAL_BLOCK;
|
||
}
|
||
else
|
||
{
|
||
iter->d.compunit_symtab = cu;
|
||
iter->which = which;
|
||
}
|
||
}
|
||
|
||
/* A helper function that finds the current compunit over whose static
|
||
or global block we should iterate. */
|
||
|
||
static struct compunit_symtab *
|
||
find_iterator_compunit_symtab (struct block_iterator *iterator)
|
||
{
|
||
if (iterator->idx == -1)
|
||
return iterator->d.compunit_symtab;
|
||
return iterator->d.compunit_symtab->includes[iterator->idx];
|
||
}
|
||
|
||
/* Perform a single step for a plain block iterator, iterating across
|
||
symbol tables as needed. Returns the next symbol, or NULL when
|
||
iteration is complete. */
|
||
|
||
static struct symbol *
|
||
block_iterator_step (struct block_iterator *iterator, int first)
|
||
{
|
||
struct symbol *sym;
|
||
|
||
gdb_assert (iterator->which != FIRST_LOCAL_BLOCK);
|
||
|
||
while (1)
|
||
{
|
||
if (first)
|
||
{
|
||
struct compunit_symtab *cust
|
||
= find_iterator_compunit_symtab (iterator);
|
||
const struct block *block;
|
||
|
||
/* Iteration is complete. */
|
||
if (cust == NULL)
|
||
return NULL;
|
||
|
||
block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust),
|
||
iterator->which);
|
||
sym = mdict_iterator_first (BLOCK_MULTIDICT (block),
|
||
&iterator->mdict_iter);
|
||
}
|
||
else
|
||
sym = mdict_iterator_next (&iterator->mdict_iter);
|
||
|
||
if (sym != NULL)
|
||
return sym;
|
||
|
||
/* We have finished iterating the appropriate block of one
|
||
symtab. Now advance to the next symtab and begin iteration
|
||
there. */
|
||
++iterator->idx;
|
||
first = 1;
|
||
}
|
||
}
|
||
|
||
/* See block.h. */
|
||
|
||
struct symbol *
|
||
block_iterator_first (const struct block *block,
|
||
struct block_iterator *iterator)
|
||
{
|
||
initialize_block_iterator (block, iterator);
|
||
|
||
if (iterator->which == FIRST_LOCAL_BLOCK)
|
||
return mdict_iterator_first (block->multidict, &iterator->mdict_iter);
|
||
|
||
return block_iterator_step (iterator, 1);
|
||
}
|
||
|
||
/* See block.h. */
|
||
|
||
struct symbol *
|
||
block_iterator_next (struct block_iterator *iterator)
|
||
{
|
||
if (iterator->which == FIRST_LOCAL_BLOCK)
|
||
return mdict_iterator_next (&iterator->mdict_iter);
|
||
|
||
return block_iterator_step (iterator, 0);
|
||
}
|
||
|
||
/* Perform a single step for a "match" block iterator, iterating
|
||
across symbol tables as needed. Returns the next symbol, or NULL
|
||
when iteration is complete. */
|
||
|
||
static struct symbol *
|
||
block_iter_match_step (struct block_iterator *iterator,
|
||
const lookup_name_info &name,
|
||
int first)
|
||
{
|
||
struct symbol *sym;
|
||
|
||
gdb_assert (iterator->which != FIRST_LOCAL_BLOCK);
|
||
|
||
while (1)
|
||
{
|
||
if (first)
|
||
{
|
||
struct compunit_symtab *cust
|
||
= find_iterator_compunit_symtab (iterator);
|
||
const struct block *block;
|
||
|
||
/* Iteration is complete. */
|
||
if (cust == NULL)
|
||
return NULL;
|
||
|
||
block = BLOCKVECTOR_BLOCK (COMPUNIT_BLOCKVECTOR (cust),
|
||
iterator->which);
|
||
sym = mdict_iter_match_first (BLOCK_MULTIDICT (block), name,
|
||
&iterator->mdict_iter);
|
||
}
|
||
else
|
||
sym = mdict_iter_match_next (name, &iterator->mdict_iter);
|
||
|
||
if (sym != NULL)
|
||
return sym;
|
||
|
||
/* We have finished iterating the appropriate block of one
|
||
symtab. Now advance to the next symtab and begin iteration
|
||
there. */
|
||
++iterator->idx;
|
||
first = 1;
|
||
}
|
||
}
|
||
|
||
/* See block.h. */
|
||
|
||
struct symbol *
|
||
block_iter_match_first (const struct block *block,
|
||
const lookup_name_info &name,
|
||
struct block_iterator *iterator)
|
||
{
|
||
initialize_block_iterator (block, iterator);
|
||
|
||
if (iterator->which == FIRST_LOCAL_BLOCK)
|
||
return mdict_iter_match_first (block->multidict, name,
|
||
&iterator->mdict_iter);
|
||
|
||
return block_iter_match_step (iterator, name, 1);
|
||
}
|
||
|
||
/* See block.h. */
|
||
|
||
struct symbol *
|
||
block_iter_match_next (const lookup_name_info &name,
|
||
struct block_iterator *iterator)
|
||
{
|
||
if (iterator->which == FIRST_LOCAL_BLOCK)
|
||
return mdict_iter_match_next (name, &iterator->mdict_iter);
|
||
|
||
return block_iter_match_step (iterator, name, 0);
|
||
}
|
||
|
||
/* See block.h.
|
||
|
||
Note that if NAME is the demangled form of a C++ symbol, we will fail
|
||
to find a match during the binary search of the non-encoded names, but
|
||
for now we don't worry about the slight inefficiency of looking for
|
||
a match we'll never find, since it will go pretty quick. Once the
|
||
binary search terminates, we drop through and do a straight linear
|
||
search on the symbols. Each symbol which is marked as being a ObjC/C++
|
||
symbol (language_cplus or language_objc set) has both the encoded and
|
||
non-encoded names tested for a match. */
|
||
|
||
struct symbol *
|
||
block_lookup_symbol (const struct block *block, const char *name,
|
||
symbol_name_match_type match_type,
|
||
const domain_enum domain)
|
||
{
|
||
struct block_iterator iter;
|
||
struct symbol *sym;
|
||
|
||
lookup_name_info lookup_name (name, match_type);
|
||
|
||
if (!BLOCK_FUNCTION (block))
|
||
{
|
||
struct symbol *other = NULL;
|
||
|
||
ALL_BLOCK_SYMBOLS_WITH_NAME (block, lookup_name, iter, sym)
|
||
{
|
||
if (SYMBOL_DOMAIN (sym) == domain)
|
||
return sym;
|
||
/* This is a bit of a hack, but symbol_matches_domain might ignore
|
||
STRUCT vs VAR domain symbols. So if a matching symbol is found,
|
||
make sure there is no "better" matching symbol, i.e., one with
|
||
exactly the same domain. PR 16253. */
|
||
if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
|
||
SYMBOL_DOMAIN (sym), domain))
|
||
other = sym;
|
||
}
|
||
return other;
|
||
}
|
||
else
|
||
{
|
||
/* Note that parameter symbols do not always show up last in the
|
||
list; this loop makes sure to take anything else other than
|
||
parameter symbols first; it only uses parameter symbols as a
|
||
last resort. Note that this only takes up extra computation
|
||
time on a match.
|
||
It's hard to define types in the parameter list (at least in
|
||
C/C++) so we don't do the same PR 16253 hack here that is done
|
||
for the !BLOCK_FUNCTION case. */
|
||
|
||
struct symbol *sym_found = NULL;
|
||
|
||
ALL_BLOCK_SYMBOLS_WITH_NAME (block, lookup_name, iter, sym)
|
||
{
|
||
if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
|
||
SYMBOL_DOMAIN (sym), domain))
|
||
{
|
||
sym_found = sym;
|
||
if (!SYMBOL_IS_ARGUMENT (sym))
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
return (sym_found); /* Will be NULL if not found. */
|
||
}
|
||
}
|
||
|
||
/* See block.h. */
|
||
|
||
struct symbol *
|
||
block_lookup_symbol_primary (const struct block *block, const char *name,
|
||
const domain_enum domain)
|
||
{
|
||
struct symbol *sym, *other;
|
||
struct mdict_iterator mdict_iter;
|
||
|
||
lookup_name_info lookup_name (name, symbol_name_match_type::FULL);
|
||
|
||
/* Verify BLOCK is STATIC_BLOCK or GLOBAL_BLOCK. */
|
||
gdb_assert (BLOCK_SUPERBLOCK (block) == NULL
|
||
|| BLOCK_SUPERBLOCK (BLOCK_SUPERBLOCK (block)) == NULL);
|
||
|
||
other = NULL;
|
||
for (sym
|
||
= mdict_iter_match_first (block->multidict, lookup_name, &mdict_iter);
|
||
sym != NULL;
|
||
sym = mdict_iter_match_next (lookup_name, &mdict_iter))
|
||
{
|
||
if (SYMBOL_DOMAIN (sym) == domain)
|
||
return sym;
|
||
|
||
/* This is a bit of a hack, but symbol_matches_domain might ignore
|
||
STRUCT vs VAR domain symbols. So if a matching symbol is found,
|
||
make sure there is no "better" matching symbol, i.e., one with
|
||
exactly the same domain. PR 16253. */
|
||
if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
|
||
SYMBOL_DOMAIN (sym), domain))
|
||
other = sym;
|
||
}
|
||
|
||
return other;
|
||
}
|
||
|
||
/* See block.h. */
|
||
|
||
struct symbol *
|
||
block_find_symbol (const struct block *block, const char *name,
|
||
const domain_enum domain,
|
||
block_symbol_matcher_ftype *matcher, void *data)
|
||
{
|
||
struct block_iterator iter;
|
||
struct symbol *sym;
|
||
|
||
lookup_name_info lookup_name (name, symbol_name_match_type::FULL);
|
||
|
||
/* Verify BLOCK is STATIC_BLOCK or GLOBAL_BLOCK. */
|
||
gdb_assert (BLOCK_SUPERBLOCK (block) == NULL
|
||
|| BLOCK_SUPERBLOCK (BLOCK_SUPERBLOCK (block)) == NULL);
|
||
|
||
ALL_BLOCK_SYMBOLS_WITH_NAME (block, lookup_name, iter, sym)
|
||
{
|
||
/* MATCHER is deliberately called second here so that it never sees
|
||
a non-domain-matching symbol. */
|
||
if (symbol_matches_domain (SYMBOL_LANGUAGE (sym),
|
||
SYMBOL_DOMAIN (sym), domain)
|
||
&& matcher (sym, data))
|
||
return sym;
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
/* See block.h. */
|
||
|
||
int
|
||
block_find_non_opaque_type (struct symbol *sym, void *data)
|
||
{
|
||
return !TYPE_IS_OPAQUE (SYMBOL_TYPE (sym));
|
||
}
|
||
|
||
/* See block.h. */
|
||
|
||
int
|
||
block_find_non_opaque_type_preferred (struct symbol *sym, void *data)
|
||
{
|
||
struct symbol **best = (struct symbol **) data;
|
||
|
||
if (!TYPE_IS_OPAQUE (SYMBOL_TYPE (sym)))
|
||
return 1;
|
||
*best = sym;
|
||
return 0;
|
||
}
|
||
|
||
/* See block.h. */
|
||
|
||
struct blockranges *
|
||
make_blockranges (struct objfile *objfile,
|
||
const std::vector<blockrange> &rangevec)
|
||
{
|
||
struct blockranges *blr;
|
||
size_t n = rangevec.size();
|
||
|
||
blr = (struct blockranges *)
|
||
obstack_alloc (&objfile->objfile_obstack,
|
||
sizeof (struct blockranges)
|
||
+ (n - 1) * sizeof (struct blockrange));
|
||
|
||
blr->nranges = n;
|
||
for (int i = 0; i < n; i++)
|
||
blr->range[i] = rangevec[i];
|
||
return blr;
|
||
}
|
||
|