+++ /dev/null
-/* Read a symbol table in ECOFF format (Third-Eye).
-
- Copyright (C) 1986-2026 Free Software Foundation, Inc.
-
- Original version contributed by Alessandro Forin (af@cs.cmu.edu) at
- CMU. Major work by Per Bothner, John Gilmore and Ian Lance Taylor
- at Cygnus Support.
-
- This file is part of GDB.
-
- 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.
-
- 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.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
-
-/* This module provides the function mdebug_build_psymtabs. It reads
- ECOFF debugging information into partial symbol tables. The
- debugging information is read from two structures. A struct
- ecoff_debug_swap includes the sizes of each ECOFF structure and
- swapping routines; these are fixed for a particular target. A
- struct ecoff_debug_info points to the debugging information for a
- particular object file.
-
- ECOFF symbol tables are mostly written in the byte order of the
- target machine. However, one section of the table (the auxiliary
- symbol information) is written in the host byte order. There is a
- bit in the other symbol info which describes which host byte order
- was used. ECOFF thereby takes the trophy from Intel `b.out' for
- the most brain-dead adaptation of a file format to byte order.
-
- This module can read all four of the known byte-order combinations,
- on any type of host. */
-
-#include "symtab.h"
-#include "gdbtypes.h"
-#include "gdbcore.h"
-#include "filenames.h"
-#include "objfiles.h"
-#include "gdbsupport/gdb_obstack.h"
-#include "buildsym-legacy.h"
-#include "complaints.h"
-#include "demangle.h"
-#include "gdb-demangle.h"
-#include "block.h"
-#include "dictionary.h"
-#include "mdebugread.h"
-#include <sys/stat.h>
-#include "psymtab.h"
-#include "source.h"
-
-#include "bfd.h"
-
-#include "coff/ecoff.h"
-
-#include "libaout.h"
-#include "aout/aout64.h"
-#include "aout/stab_gnu.h"
-
-#include "expression.h"
-
-#include <algorithm>
-
-/* Provide a way to test if we have both ECOFF and ELF symbol tables.
- We use this define in order to know whether we should override a
- symbol's ECOFF section with its ELF section. This is necessary in
- case the symbol's ELF section could not be represented in ECOFF. */
-#define ECOFF_IN_ELF(bfd) (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
- && bfd_get_section_by_name (bfd, ".mdebug") != NULL)
-
-/* The objfile we are currently reading. */
-
-static struct objfile *mdebugread_objfile;
-
-\f
-
-/* We put a pointer to this structure in the read_symtab_private field
- of the psymtab. */
-
-struct md_symloc
- {
- /* Index of the FDR that this psymtab represents. */
- int fdr_idx;
- /* The BFD that the psymtab was created from. */
- bfd *cur_bfd;
- const struct ecoff_debug_swap *debug_swap;
- struct ecoff_debug_info *debug_info;
- struct mdebug_pending **pending_list;
- /* Pointer to external symbols for this file. */
- EXTR *extern_tab;
- /* Size of extern_tab. */
- int extern_count;
- enum language pst_language;
- };
-
-#define PST_PRIVATE(p) ((struct md_symloc *)(p)->read_symtab_private)
-#define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
-#define CUR_BFD(p) (PST_PRIVATE(p)->cur_bfd)
-#define DEBUG_SWAP(p) (PST_PRIVATE(p)->debug_swap)
-#define DEBUG_INFO(p) (PST_PRIVATE(p)->debug_info)
-#define PENDING_LIST(p) (PST_PRIVATE(p)->pending_list)
-
-#define SC_IS_TEXT(sc) ((sc) == scText \
- || (sc) == scRConst \
- || (sc) == scInit \
- || (sc) == scFini)
-#define SC_IS_DATA(sc) ((sc) == scData \
- || (sc) == scSData \
- || (sc) == scRData \
- || (sc) == scPData \
- || (sc) == scXData)
-#define SC_IS_COMMON(sc) ((sc) == scCommon || (sc) == scSCommon)
-#define SC_IS_BSS(sc) ((sc) == scBss)
-#define SC_IS_SBSS(sc) ((sc) == scSBss)
-#define SC_IS_UNDEF(sc) ((sc) == scUndefined || (sc) == scSUndefined)
-
-struct symbol *fortran_global_syms[HASHSIZE];
-
-/* Finish up the symbols in the fortran_global_syms hashtable. */
-static void
-finish_fortran_symbol (struct objfile *objfile)
-{
- /* First, check if we have any fortran symbols at all. */
- bool found = false;
- for (int i = 0; i < HASHSIZE && !found; i++)
- found = fortran_global_syms[i] != nullptr;
-
- if (!found)
- return;
-
- /* We have symbols to fixup. */
- for (minimal_symbol *msym : objfile->msymbols ())
- {
- int hash = hashname (msym->linkage_name ());
- symbol *prev = nullptr;
-
- for (symbol *sym = fortran_global_syms[hash]; sym; )
- {
- /* Check if the symbol in the chain is the same as the
- minimal symbol. If so, remove from the chain and do the
- last bits of processing. Otherwise, mark this symbol as
- the last seen symbol for chain removal. */
- if (strcmp (msym->linkage_name (), sym->linkage_name ()) == 0)
- {
- /* Based on scan_file_globals, except we know the symbol is
- LOC_STATIC, so we know the exact if branch that'd be
- followed. */
- sym->set_value_address (msym->value_address (objfile));
- sym->set_section_index (msym->section_index ());
-
- /* Update SYM to move forward through the chain, and remove
- it from the list. */
- sym = sym->value_chain ();
- if (prev)
- prev->set_value_chain (sym);
- else
- fortran_global_syms[hash] = sym;
-
- /* A symbol could have been added multiple times to
- the hashmap, so we can't break out of the loop here. */
- }
- else
- {
- prev = sym;
- sym = sym->value_chain ();
- }
- }
- }
-
- /* If any symbols remain, change the address class to unresolved
- and clear the misleading memory. */
- for (int hash = 0; hash < HASHSIZE; hash++)
- {
- symbol *sym, *prev;
- for (sym = fortran_global_syms[hash]; sym; )
- {
- prev = sym;
- /* Zeroing the address later will overwrite the value_chain,
- so we have to advance it now. */
- sym = sym->value_chain ();
-
- prev->set_value_address (0);
- prev->set_loc_class_index (LOC_UNRESOLVED);
- }
- }
-
- memset (fortran_global_syms, 0, sizeof (fortran_global_syms));
-}
-
-\f
-/* Various complaints about symbol reading that don't abort the process. */
-static void
-index_complaint (const char *arg1)
-{
- complaint (_("bad aux index at symbol %s"), arg1);
-}
-
-static void
-unknown_ext_complaint (const char *arg1)
-{
- complaint (_("unknown external symbol %s"), arg1);
-}
-
-static void
-basic_type_complaint (int arg1, const char *arg2)
-{
- complaint (_("cannot map ECOFF basic type 0x%x for %s"),
- arg1, arg2);
-}
-
-static void
-bad_tag_guess_complaint (const char *arg1)
-{
- complaint (_("guessed tag type of %s incorrectly"), arg1);
-}
-
-static void
-bad_rfd_entry_complaint (const char *arg1, int arg2, int arg3)
-{
- complaint (_("bad rfd entry for %s: file %d, index %d"),
- arg1, arg2, arg3);
-}
-
-static void
-unexpected_type_code_complaint (const char *arg1)
-{
- complaint (_("unexpected type code for %s"), arg1);
-}
-
-/* Macros and extra defs. */
-
-/* Puns: hard to find whether -g was used and how. */
-
-#define MIN_GLEVEL GLEVEL_0
-#define compare_glevel(a,b) \
- (((a) == GLEVEL_3) ? ((b) < GLEVEL_3) : \
- ((b) == GLEVEL_3) ? -1 : (int)((b) - (a)))
-\f
-/* Things that really are local to this module. */
-
-/* Remember what we deduced to be the source language of this psymtab. */
-
-static enum language psymtab_language = language_unknown;
-
-/* Current BFD. */
-
-static bfd *cur_bfd;
-
-/* How to parse debugging information for CUR_BFD. */
-
-static const struct ecoff_debug_swap *debug_swap;
-
-/* Pointers to debugging information for CUR_BFD. */
-
-static struct ecoff_debug_info *debug_info;
-
-/* Pointer to current file descriptor record, and its index. */
-
-static FDR *cur_fdr;
-static int cur_fd;
-
-/* Index of current symbol. */
-
-static int cur_sdx;
-
-/* Note how much "debuggable" this image is. We would like
- to see at least one FDR with full symbols. */
-
-static int max_gdbinfo;
-static int max_glevel;
-
-/* When examining .o files, report on undefined symbols. */
-
-static int n_undef_symbols, n_undef_labels, n_undef_vars, n_undef_procs;
-
-/* Pseudo symbol to use when putting stabs into the symbol table. */
-
-static char stabs_symbol[] = STABS_SYMBOL;
-
-/* Nonzero if we have seen ecoff debugging info for a file. */
-
-static int found_ecoff_debugging_info;
-
-/* Forward declarations. */
-
-static int upgrade_type (int, struct type **, int, union aux_ext *,
- int, const char *);
-
-static void parse_partial_symbols (minimal_symbol_reader &,
- psymtab_storage *,
- struct objfile *);
-
-static int has_opaque_xref (FDR *, SYMR *);
-
-static int cross_ref (int, union aux_ext *, struct type **, enum type_code,
- const char **, int, const char *);
-
-static struct symbol *new_symbol (const char *);
-
-static struct type *new_type (char *);
-
-enum block_type { FUNCTION_BLOCK, NON_FUNCTION_BLOCK };
-
-static struct block *new_block (struct objfile *objfile,
- enum block_type, enum language);
-
-static struct compunit_symtab *new_symtab (const char *, int, struct objfile *);
-
-static struct linetable *new_linetable (int);
-
-static struct type *parse_type (int, union aux_ext *, unsigned int, int *,
- int, const char *);
-
-static struct symbol *mylookup_symbol (const char *, const struct block *,
- domain_enum, location_class);
-
-static void sort_blocks (struct symtab *);
-
-static legacy_psymtab *new_psymtab (const char *, psymtab_storage *,
- struct objfile *);
-
-static void mdebug_expand_psymtab (legacy_psymtab *pst,
- struct objfile *objfile);
-
-static void add_symbol (struct symbol *, struct symtab *, struct block *);
-
-static int add_line (struct linetable *, int, CORE_ADDR, int);
-
-static struct linetable *shrink_linetable (struct linetable *);
-
-static void handle_psymbol_enumerators (struct objfile *, psymtab_storage *,
- partial_symtab *,
- FDR *, int, CORE_ADDR);
-
-/* Exported procedure: Builds a symtab from the partial symtab SELF.
- Restores the environment in effect when SELF was created, delegates
- most of the work to an ancillary procedure, and sorts
- and reorders the symtab list at the end. SELF is not NULL. */
-
-static void
-mdebug_read_symtab (legacy_psymtab *self, struct objfile *objfile)
-{
- self->expand_psymtab (objfile);
-
- /* Match with global symbols. This only needs to be done once,
- after all of the symtabs and dependencies have been read in. */
- finish_fortran_symbol (objfile);
-}
-\f
-/* File-level interface functions. */
-
-/* Find a file descriptor given its index RF relative to a file CF. */
-
-static FDR *
-get_rfd (int cf, int rf)
-{
- FDR *fdrs;
- FDR *f;
- RFDT rfd;
-
- fdrs = debug_info->fdr;
- f = fdrs + cf;
- /* Object files do not have the RFD table, all refs are absolute. */
- if (f->rfdBase == 0)
- return fdrs + rf;
- (*debug_swap->swap_rfd_in) (cur_bfd,
- ((char *) debug_info->external_rfd
- + ((f->rfdBase + rf)
- * debug_swap->external_rfd_size)),
- &rfd);
- return fdrs + rfd;
-}
-
-/* Return a safer print NAME for a file descriptor. */
-
-static const char *
-fdr_name (FDR *f)
-{
- if (f->rss == -1)
- return "<stripped file>";
- if (f->rss == 0)
- return "<NFY>";
- return debug_info->ss + f->issBase + f->rss;
-}
-
-
-/* Read in and parse the symtab of the file OBJFILE. Symbols from
- different sections are relocated via the SECTION_OFFSETS. */
-
-static void
-mdebug_build_psymtabs (minimal_symbol_reader &reader,
- struct objfile *objfile,
- const struct ecoff_debug_swap *swap,
- struct ecoff_debug_info *info)
-{
- cur_bfd = objfile->obfd.get ();
- debug_swap = swap;
- debug_info = info;
-
- memset (fortran_global_syms, 0, sizeof (fortran_global_syms));
-
- /* Make sure all the FDR information is swapped in. */
- if (info->fdr == NULL)
- {
- char *fdr_src;
- char *fdr_end;
- FDR *fdr_ptr;
-
- info->fdr = (FDR *) XOBNEWVEC (&objfile->objfile_obstack, FDR,
- info->symbolic_header.ifdMax);
- fdr_src = (char *) info->external_fdr;
- fdr_end = (fdr_src
- + info->symbolic_header.ifdMax * swap->external_fdr_size);
- fdr_ptr = info->fdr;
- for (; fdr_src < fdr_end; fdr_src += swap->external_fdr_size, fdr_ptr++)
- (*swap->swap_fdr_in) (objfile->obfd.get (), fdr_src, fdr_ptr);
- }
-
- psymbol_functions *psf = new psymbol_functions ();
- psymtab_storage *partial_symtabs = psf->get_partial_symtabs ().get ();
- objfile->qf.emplace_front (psf);
- parse_partial_symbols (reader, partial_symtabs, objfile);
-
-#if 0
- /* Check to make sure file was compiled with -g. If not, warn the
- user of this limitation. */
- if (compare_glevel (max_glevel, GLEVEL_2) < 0)
- {
- if (max_gdbinfo == 0)
- gdb_printf (_("\n%s not compiled with -g, "
- "debugging support is limited.\n"),
- objfile->name);
- gdb_printf (_("You should compile with -g2 or "
- "-g3 for best debugging support.\n"));
- }
-#endif
-}
-\f
-/* Local utilities */
-
-/* Map of FDR indexes to partial symtabs. */
-
-struct pst_map
-{
- legacy_psymtab *pst = nullptr; /* the psymtab proper */
- long n_globals = 0; /* exported globals (external symbols) */
- long globals_offset = 0; /* cumulative */
-};
-
-
-/* Utility stack, used to nest procedures and blocks properly.
- It is a doubly linked list, to avoid too many alloc/free.
- Since we might need it quite a few times it is NOT deallocated
- after use. */
-
-static struct parse_stack
- {
- struct parse_stack *next, *prev;
- struct symtab *cur_st; /* Current symtab. */
- struct block *cur_block; /* Block in it. */
-
- /* What are we parsing. stFile, or stBlock are for files and
- blocks. stProc or stStaticProc means we have seen the start of a
- procedure, but not the start of the block within in. When we see
- the start of that block, we change it to stNil, without pushing a
- new block, i.e. stNil means both a procedure and a block. */
-
- int blocktype;
-
- struct type *cur_type; /* Type we parse fields for. */
- int cur_field; /* Field number in cur_type. */
- CORE_ADDR procadr; /* Start address of this procedure. */
- int numargs; /* Its argument count. */
- }
-
- *top_stack; /* Top stack ptr */
-
-
-/* Enter a new lexical context. */
-
-static void
-push_parse_stack (void)
-{
- struct parse_stack *newobj;
-
- /* Reuse frames if possible. */
- if (top_stack && top_stack->prev)
- newobj = top_stack->prev;
- else
- newobj = XCNEW (struct parse_stack);
- /* Initialize new frame with previous content. */
- if (top_stack)
- {
- struct parse_stack *prev = newobj->prev;
-
- *newobj = *top_stack;
- top_stack->prev = newobj;
- newobj->prev = prev;
- newobj->next = top_stack;
- }
- top_stack = newobj;
-}
-
-/* Exit a lexical context. */
-
-static void
-pop_parse_stack (void)
-{
- if (!top_stack)
- return;
- if (top_stack->next)
- top_stack = top_stack->next;
-}
-
-
-/* Cross-references might be to things we haven't looked at
- yet, e.g. type references. To avoid too many type
- duplications we keep a quick fixup table, an array
- of lists of references indexed by file descriptor. */
-
-struct mdebug_pending
-{
- struct mdebug_pending *next; /* link */
- char *s; /* the unswapped symbol */
- struct type *t; /* its partial type descriptor */
-};
-
-
-/* The pending information is kept for an entire object file. We
- allocate the pending information table when we create the partial
- symbols, and we store a pointer to the single table in each
- psymtab. */
-
-static struct mdebug_pending **pending_list;
-
-/* Check whether we already saw symbol SH in file FH. */
-
-static struct mdebug_pending *
-is_pending_symbol (FDR *fh, char *sh)
-{
- int f_idx = fh - debug_info->fdr;
- struct mdebug_pending *p;
-
- /* Linear search is ok, list is typically no more than 10 deep. */
- for (p = pending_list[f_idx]; p; p = p->next)
- if (p->s == sh)
- break;
- return p;
-}
-
-/* Add a new symbol SH of type T. */
-
-static void
-add_pending (FDR *fh, char *sh, struct type *t)
-{
- int f_idx = fh - debug_info->fdr;
- struct mdebug_pending *p = is_pending_symbol (fh, sh);
-
- /* Make sure we do not make duplicates. */
- if (!p)
- {
- p = XOBNEW (&mdebugread_objfile->objfile_obstack, mdebug_pending);
- p->s = sh;
- p->t = t;
- p->next = pending_list[f_idx];
- pending_list[f_idx] = p;
- }
-}
-\f
-
-/* Parsing Routines proper. */
-
-static void
-reg_value_complaint (int regnum, int num_regs, const char *sym)
-{
- complaint (_("bad register number %d (max %d) in symbol %s"),
- regnum, num_regs - 1, sym);
-}
-
-/* Parse a single symbol. Mostly just make up a GDB symbol for it.
- For blocks, procedures and types we open a new lexical context.
- This is basically just a big switch on the symbol's type. Argument
- AX is the base pointer of aux symbols for this file (fh->iauxBase).
- EXT_SH points to the unswapped symbol, which is needed for struct,
- union, etc., types; it is NULL for an EXTR. BIGEND says whether
- aux symbols are big-endian or little-endian. Return count of
- SYMR's handled (normally one). */
-
-static int
-mdebug_reg_to_regnum (struct symbol *sym, struct gdbarch *gdbarch)
-{
- int regno = gdbarch_ecoff_reg_to_regnum (gdbarch, sym->value_longest ());
-
- if (regno < 0 || regno >= gdbarch_num_cooked_regs (gdbarch))
- {
- reg_value_complaint (regno, gdbarch_num_cooked_regs (gdbarch),
- sym->print_name ());
-
- regno = gdbarch_sp_regnum (gdbarch); /* Known safe, though useless. */
- }
-
- return regno;
-}
-
-static const struct symbol_register_ops mdebug_register_funcs = {
- mdebug_reg_to_regnum
-};
-
-/* The "loc_class" indices for computed symbols. */
-
-static int mdebug_register_index;
-static int mdebug_regparm_index;
-
-/* Common code for symbols describing data. */
-
-static void
-add_data_symbol (SYMR *sh, union aux_ext *ax, int bigend,
- struct symbol *s, int loc_class_index, struct block *b,
- struct objfile *objfile, const char *name)
-{
- s->set_domain (VAR_DOMAIN);
- s->set_loc_class_index (loc_class_index);
- add_symbol (s, top_stack->cur_st, b);
-
- /* Type could be missing if file is compiled without debugging info. */
- if (SC_IS_UNDEF (sh->sc)
- || sh->sc == scNil || sh->index == indexNil)
- s->set_type (builtin_type (objfile)->nodebug_data_symbol);
- else
- s->set_type (parse_type (cur_fd, ax, sh->index, 0, bigend, name));
- /* Value of a data symbol is its memory address. */
-}
-
-static int
-parse_symbol (SYMR *sh, union aux_ext *ax, char *ext_sh, int bigend,
- gdb::array_view<const CORE_ADDR> section_offsets,
- struct objfile *objfile)
-{
- struct gdbarch *gdbarch = objfile->arch ();
- const bfd_size_type external_sym_size = debug_swap->external_sym_size;
- void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in;
- const char *name;
- struct symbol *s;
- struct block *b;
- struct mdebug_pending *pend;
- struct type *t;
- int count = 1;
- TIR tir;
- long svalue = sh->value;
- int bitsize;
-
- if (ext_sh == NULL)
- name = debug_info->ssext + sh->iss;
- else
- name = debug_info->ss + cur_fdr->issBase + sh->iss;
-
- int section_index = -1;
- switch (sh->sc)
- {
- case scText:
- case scRConst:
- /* Do not relocate relative values.
- The value of a stEnd symbol is the displacement from the
- corresponding start symbol value.
- The value of a stBlock symbol is the displacement from the
- procedure address. */
- if (sh->st != stEnd && sh->st != stBlock)
- section_index = SECT_OFF_TEXT (objfile);
- break;
- case scData:
- case scSData:
- case scRData:
- case scPData:
- case scXData:
- section_index = SECT_OFF_DATA (objfile);
- break;
- case scBss:
- case scSBss:
- section_index = SECT_OFF_BSS (objfile);
- break;
- }
-
- if (section_index != -1)
- sh->value += section_offsets[section_index];
-
- switch (sh->st)
- {
- case stNil:
- break;
-
- case stGlobal: /* External symbol, goes into global block. */
- b = top_stack->cur_st->compunit ()->blockvector ()->global_block ();
- s = new_symbol (name);
- s->set_section_index (section_index);
- s->set_value_address (sh->value);
- add_data_symbol (sh, ax, bigend, s, LOC_STATIC, b, objfile, name);
- break;
-
- case stStatic: /* Static data, goes into current block. */
- b = top_stack->cur_block;
- s = new_symbol (name);
- if (SC_IS_COMMON (sh->sc))
- {
- /* It is a FORTRAN common block. At least for SGI Fortran the
- address is not in the symbol; we need to fix it later in
- scan_file_globals. */
-
- int bucket = hashname (s->linkage_name ());
- s->set_value_chain (fortran_global_syms[bucket]);
- fortran_global_syms[bucket] = s;
- }
- else
- {
- s->set_section_index (section_index);
- s->set_value_address (sh->value);
- }
- add_data_symbol (sh, ax, bigend, s, LOC_STATIC, b, objfile, name);
- break;
-
- case stLocal: /* Local variable, goes into current block. */
- b = top_stack->cur_block;
- s = new_symbol (name);
- s->set_value_longest (svalue);
- if (sh->sc == scRegister)
- add_data_symbol (sh, ax, bigend, s, mdebug_register_index,
- b, objfile, name);
- else
- add_data_symbol (sh, ax, bigend, s, LOC_LOCAL,
- b, objfile, name);
- break;
-
- case stParam: /* Arg to procedure, goes into current
- block. */
- max_gdbinfo++;
- found_ecoff_debugging_info = 1;
- top_stack->numargs++;
-
- /* Special GNU C++ name. */
- if (is_cplus_marker (name[0]) && name[1] == 't' && name[2] == 0)
- name = "this"; /* FIXME, not alloc'd in obstack. */
- s = new_symbol (name);
-
- s->set_domain (VAR_DOMAIN);
- s->set_is_argument (1);
- switch (sh->sc)
- {
- case scRegister:
- /* Pass by value in register. */
- s->set_loc_class_index (mdebug_register_index);
- break;
- case scVar:
- /* Pass by reference on stack. */
- s->set_loc_class_index (LOC_REF_ARG);
- break;
- case scVarRegister:
- /* Pass by reference in register. */
- s->set_loc_class_index (mdebug_regparm_index);
- break;
- default:
- /* Pass by value on stack. */
- s->set_loc_class_index (LOC_ARG);
- break;
- }
- s->set_value_longest (svalue);
- s->set_type (parse_type (cur_fd, ax, sh->index, 0, bigend, name));
- add_symbol (s, top_stack->cur_st, top_stack->cur_block);
- break;
-
- case stLabel: /* label, goes into current block. */
- s = new_symbol (name);
- s->set_domain (LABEL_DOMAIN); /* So that it can be used */
- s->set_loc_class_index (LOC_LABEL); /* but not misused. */
- s->set_section_index (section_index);
- s->set_value_address (sh->value);
- s->set_type (builtin_type (objfile)->builtin_int);
- add_symbol (s, top_stack->cur_st, top_stack->cur_block);
- break;
-
- case stProc: /* Procedure, usually goes into global block. */
- case stStaticProc: /* Static procedure, goes into current block. */
- /* For stProc symbol records, we need to check the storage class
- as well, as only (stProc, scText) entries represent "real"
- procedures - See the Compaq document titled "Object File /
- Symbol Table Format Specification" for more information.
- If the storage class is not scText, we discard the whole block
- of symbol records for this stProc. */
- if (sh->st == stProc && sh->sc != scText)
- {
- char *ext_tsym = ext_sh;
- int keep_counting = 1;
- SYMR tsym;
-
- while (keep_counting)
- {
- ext_tsym += external_sym_size;
- (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
- count++;
- switch (tsym.st)
- {
- case stParam:
- break;
- case stEnd:
- keep_counting = 0;
- break;
- default:
- complaint (_("unknown symbol type 0x%x"), sh->st);
- break;
- }
- }
- break;
- }
- s = new_symbol (name);
- s->set_domain (FUNCTION_DOMAIN);
- s->set_loc_class_index (LOC_BLOCK);
- s->set_section_index (section_index);
- /* Type of the return value. */
- if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil)
- t = builtin_type (objfile)->builtin_int;
- else
- {
- t = parse_type (cur_fd, ax, sh->index + 1, 0, bigend, name);
- if (strcmp (name, "malloc") == 0
- && t->code () == TYPE_CODE_VOID)
- {
- /* I don't know why, but, at least under Alpha GNU/Linux,
- when linking against a malloc without debugging
- symbols, its read as a function returning void---this
- is bad because it means we cannot call functions with
- string arguments interactively; i.e., "call
- printf("howdy\n")" would fail with the error message
- "program has no memory available". To avoid this, we
- patch up the type and make it void*
- instead. (davidm@azstarnet.com). */
- t = make_pointer_type (t, NULL);
- }
- }
- b = top_stack->cur_block;
- if (sh->st == stProc)
- {
- struct blockvector *bv
- = top_stack->cur_st->compunit ()->blockvector ();
-
- /* The next test should normally be true, but provides a
- hook for nested functions (which we don't want to make
- global). */
- if (b == bv->static_block ())
- b = bv->global_block ();
- /* Irix 5 sometimes has duplicate names for the same
- function. We want to add such names up at the global
- level, not as a nested function. */
- else if (sh->value == top_stack->procadr)
- b = bv->global_block ();
- }
- add_symbol (s, top_stack->cur_st, b);
-
- /* Make a type for the procedure itself. */
- s->set_type (lookup_function_type (t));
-
- /* All functions in C++ have prototypes. For C we don't have enough
- information in the debug info. */
- if (s->language () == language_cplus)
- s->type ()->set_is_prototyped (true);
-
- /* Create and enter a new lexical context. */
- b = new_block (objfile, FUNCTION_BLOCK, s->language ());
- s->set_value_block (b);
- b->set_function (s);
- b->set_start (sh->value);
- b->set_end (sh->value);
- b->set_superblock (top_stack->cur_block);
- top_stack->cur_st->compunit ()->blockvector ()->append_block (b);
-
- /* Not if we only have partial info. */
- if (SC_IS_UNDEF (sh->sc) || sh->sc == scNil)
- break;
-
- push_parse_stack ();
- top_stack->cur_block = b;
- top_stack->blocktype = sh->st;
- top_stack->cur_type = s->type ();
- top_stack->cur_field = -1;
- top_stack->procadr = sh->value;
- top_stack->numargs = 0;
- break;
-
- /* Beginning of code for structure, union, and enum definitions.
- They all share a common set of local variables, defined here. */
- {
- enum type_code type_code;
- char *ext_tsym;
- int nfields;
- long max_value;
- struct field *f;
-
- case stStruct: /* Start a block defining a struct type. */
- type_code = TYPE_CODE_STRUCT;
- goto structured_common;
-
- case stUnion: /* Start a block defining a union type. */
- type_code = TYPE_CODE_UNION;
- goto structured_common;
-
- case stEnum: /* Start a block defining an enum type. */
- type_code = TYPE_CODE_ENUM;
- goto structured_common;
-
- case stBlock: /* Either a lexical block, or some type. */
- if (sh->sc != scInfo && !SC_IS_COMMON (sh->sc))
- goto case_stBlock_code; /* Lexical block */
-
- type_code = TYPE_CODE_UNDEF; /* We have a type. */
-
- /* Common code for handling struct, union, enum, and/or as-yet-
- unknown-type blocks of info about structured data. `type_code'
- has been set to the proper TYPE_CODE, if we know it. */
- structured_common:
- found_ecoff_debugging_info = 1;
- push_parse_stack ();
- top_stack->blocktype = stBlock;
-
- /* First count the number of fields and the highest value. */
- nfields = 0;
- max_value = 0;
- for (ext_tsym = ext_sh + external_sym_size;
- ;
- ext_tsym += external_sym_size)
- {
- SYMR tsym;
-
- (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
-
- switch (tsym.st)
- {
- case stEnd:
- /* C++ encodes class types as structures where there the
- methods are encoded as stProc. The scope of stProc
- symbols also ends with stEnd, thus creating a risk of
- taking the wrong stEnd symbol record as the end of
- the current struct, which would cause GDB to undercount
- the real number of fields in this struct. To make sure
- we really reached the right stEnd symbol record, we
- check the associated name, and match it against the
- struct name. Since method names are mangled while
- the class name is not, there is no risk of having a
- method whose name is identical to the class name
- (in particular constructor method names are different
- from the class name). There is therefore no risk that
- this check stops the count on the StEnd of a method.
-
- Also, assume that we're really at the end when tsym.iss
- is 0 (issNull). */
- if (tsym.iss == issNull
- || strcmp (debug_info->ss + cur_fdr->issBase + tsym.iss,
- name) == 0)
- goto end_of_fields;
- break;
-
- case stMember:
- if (nfields == 0 && type_code == TYPE_CODE_UNDEF)
- {
- /* If the type of the member is Nil (or Void),
- without qualifiers, assume the tag is an
- enumeration.
- Alpha cc -migrate enums are recognized by a zero
- index and a zero symbol value.
- DU 4.0 cc enums are recognized by a member type of
- btEnum without qualifiers and a zero symbol value. */
- if (tsym.index == indexNil
- || (tsym.index == 0 && sh->value == 0))
- type_code = TYPE_CODE_ENUM;
- else
- {
- (*debug_swap->swap_tir_in) (bigend,
- &ax[tsym.index].a_ti,
- &tir);
- if ((tir.bt == btNil || tir.bt == btVoid
- || (tir.bt == btEnum && sh->value == 0))
- && tir.tq0 == tqNil)
- type_code = TYPE_CODE_ENUM;
- }
- }
- nfields++;
- if (tsym.value > max_value)
- max_value = tsym.value;
- break;
-
- case stBlock:
- case stUnion:
- case stEnum:
- case stStruct:
- {
-#if 0
- /* This is a no-op; is it trying to tell us something
- we should be checking? */
- if (tsym.sc == scVariant); /*UNIMPLEMENTED */
-#endif
- if (tsym.index != 0)
- {
- /* This is something like a struct within a
- struct. Skip over the fields of the inner
- struct. The -1 is because the for loop will
- increment ext_tsym. */
- ext_tsym = ((char *) debug_info->external_sym
- + ((cur_fdr->isymBase + tsym.index - 1)
- * external_sym_size));
- }
- }
- break;
-
- case stTypedef:
- /* mips cc puts out a typedef for struct x if it is not yet
- defined when it encounters
- struct y { struct x *xp; };
- Just ignore it. */
- break;
-
- case stIndirect:
- /* Irix5 cc puts out a stIndirect for struct x if it is not
- yet defined when it encounters
- struct y { struct x *xp; };
- Just ignore it. */
- break;
-
- default:
- complaint (_("declaration block contains "
- "unhandled symbol type %d"),
- tsym.st);
- }
- }
- end_of_fields:
-
- /* In an stBlock, there is no way to distinguish structs,
- unions, and enums at this point. This is a bug in the
- original design (that has been fixed with the recent
- addition of the stStruct, stUnion, and stEnum symbol
- types.) The way you can tell is if/when you see a variable
- or field of that type. In that case the variable's type
- (in the AUX table) says if the type is struct, union, or
- enum, and points back to the stBlock here. So you can
- patch the tag kind up later - but only if there actually is
- a variable or field of that type.
-
- So until we know for sure, we will guess at this point.
- The heuristic is:
- If the first member has index==indexNil or a void type,
- assume we have an enumeration.
- Otherwise, if there is more than one member, and all
- the members have offset 0, assume we have a union.
- Otherwise, assume we have a struct.
-
- The heuristic could guess wrong in the case of of an
- enumeration with no members or a union with one (or zero)
- members, or when all except the last field of a struct have
- width zero. These are uncommon and/or illegal situations,
- and in any case guessing wrong probably doesn't matter
- much.
-
- But if we later do find out we were wrong, we fixup the tag
- kind. Members of an enumeration must be handled
- differently from struct/union fields, and that is harder to
- patch up, but luckily we shouldn't need to. (If there are
- any enumeration members, we can tell for sure it's an enum
- here.) */
-
- if (type_code == TYPE_CODE_UNDEF)
- {
- if (nfields > 1 && max_value == 0)
- type_code = TYPE_CODE_UNION;
- else
- type_code = TYPE_CODE_STRUCT;
- }
-
- /* Create a new type or use the pending type. */
- pend = is_pending_symbol (cur_fdr, ext_sh);
- if (pend == NULL)
- {
- t = new_type (NULL);
- add_pending (cur_fdr, ext_sh, t);
- }
- else
- t = pend->t;
-
- /* Do not set the tag name if it is a compiler generated tag name
- (.Fxx or .xxfake or empty) for unnamed struct/union/enums.
- Alpha cc puts out an sh->iss of zero for those. */
- if (sh->iss == 0 || name[0] == '.' || name[0] == '\0')
- t->set_name (NULL);
- else
- t->set_name (obconcat (&mdebugread_objfile->objfile_obstack,
- name, (char *) NULL));
-
- t->set_code (type_code);
- t->set_length (sh->value);
- t->alloc_fields (nfields);
- f = t->fields ().data ();
-
- if (type_code == TYPE_CODE_ENUM)
- {
- int unsigned_enum = 1;
-
- /* This is a non-empty enum. */
-
- /* DEC c89 has the number of enumerators in the sh.value field,
- not the type length, so we have to compensate for that
- incompatibility quirk.
- This might do the wrong thing for an enum with one or two
- enumerators and gcc -gcoff -fshort-enums, but these cases
- are hopefully rare enough.
- Alpha cc -migrate has a sh.value field of zero, we adjust
- that too. */
- if (t->length () == t->num_fields ()
- || t->length () == 0)
- t->set_length (gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT);
- for (ext_tsym = ext_sh + external_sym_size;
- ;
- ext_tsym += external_sym_size)
- {
- SYMR tsym;
- struct symbol *enum_sym;
-
- (*swap_sym_in) (cur_bfd, ext_tsym, &tsym);
-
- if (tsym.st != stMember)
- break;
-
- f->set_loc_enumval (tsym.value);
- f->set_type (t);
- f->set_name (debug_info->ss + cur_fdr->issBase + tsym.iss);
- f->set_bitsize (0);
-
- enum_sym = new (&mdebugread_objfile->objfile_obstack) symbol;
- enum_sym->set_linkage_name
- (obstack_strdup (&mdebugread_objfile->objfile_obstack,
- f->name ()));
- enum_sym->set_loc_class_index (LOC_CONST);
- enum_sym->set_type (t);
- enum_sym->set_domain (VAR_DOMAIN);
- enum_sym->set_value_longest (tsym.value);
- if (enum_sym->value_longest () < 0)
- unsigned_enum = 0;
- add_symbol (enum_sym, top_stack->cur_st, top_stack->cur_block);
-
- /* Skip the stMembers that we've handled. */
- count++;
- f++;
- }
- if (unsigned_enum)
- t->set_is_unsigned (true);
- }
- /* Make this the current type. */
- top_stack->cur_type = t;
- top_stack->cur_field = 0;
-
- /* Do not create a symbol for alpha cc unnamed structs. */
- if (sh->iss == 0)
- break;
-
- /* gcc puts out an empty struct for an opaque struct definitions,
- do not create a symbol for it either. */
- if (t->num_fields () == 0)
- {
- t->set_is_stub (true);
- break;
- }
-
- s = new_symbol (name);
- s->set_domain (STRUCT_DOMAIN);
- s->set_loc_class_index (LOC_TYPEDEF);
- s->set_value_longest (0);
- s->set_type (t);
- add_symbol (s, top_stack->cur_st, top_stack->cur_block);
- break;
-
- /* End of local variables shared by struct, union, enum, and
- block (as yet unknown struct/union/enum) processing. */
- }
-
- case_stBlock_code:
- found_ecoff_debugging_info = 1;
- /* Beginning of (code) block. Value of symbol
- is the displacement from procedure start. */
- push_parse_stack ();
-
- /* Do not start a new block if this is the outermost block of a
- procedure. This allows the LOC_BLOCK symbol to point to the
- block with the local variables, so funcname::var works. */
- if (top_stack->blocktype == stProc
- || top_stack->blocktype == stStaticProc)
- {
- top_stack->blocktype = stNil;
- break;
- }
-
- top_stack->blocktype = stBlock;
- b = new_block (objfile, NON_FUNCTION_BLOCK, psymtab_language);
- b->set_start (sh->value + top_stack->procadr);
- b->set_superblock (top_stack->cur_block);
- top_stack->cur_block = b;
- top_stack->cur_st->compunit ()->blockvector ()->append_block (b);
- break;
-
- case stEnd: /* end (of anything) */
- if (sh->sc == scInfo || SC_IS_COMMON (sh->sc))
- {
- /* Finished with type */
- top_stack->cur_type = 0;
- }
- else if (sh->sc == scText &&
- (top_stack->blocktype == stProc ||
- top_stack->blocktype == stStaticProc))
- {
- /* Finished with procedure */
- struct blockvector *bv
- = top_stack->cur_st->compunit ()->blockvector ();
- struct mdebug_extra_func_info *e;
- struct block *cblock = top_stack->cur_block;
- struct type *ftype = top_stack->cur_type;
-
- top_stack->cur_block->set_end
- (top_stack->cur_block->end () + sh->value); /* size */
-
- /* Make up special symbol to contain procedure specific info. */
- s = new_symbol (MDEBUG_EFI_SYMBOL_NAME);
- s->set_domain (LABEL_DOMAIN);
- s->set_loc_class_index (LOC_CONST);
- s->set_type (builtin_type (mdebugread_objfile)->builtin_void);
- e = OBSTACK_ZALLOC (&mdebugread_objfile->objfile_obstack,
- mdebug_extra_func_info);
- s->set_value_bytes ((gdb_byte *) e);
- e->numargs = top_stack->numargs;
- e->pdr.framereg = -1;
- add_symbol (s, top_stack->cur_st, top_stack->cur_block);
-
- /* f77 emits proc-level with address bounds==[0,0],
- So look for such child blocks, and patch them. */
- for (block *b_bad : bv->blocks ())
- {
- if (b_bad->superblock () == cblock
- && b_bad->start () == top_stack->procadr
- && b_bad->end () == top_stack->procadr)
- {
- b_bad->set_start (cblock->start ());
- b_bad->set_end (cblock->end ());
- }
- }
-
- if (ftype->num_fields () <= 0)
- {
- /* No parameter type information is recorded with the function's
- type. Set that from the type of the parameter symbols. */
- int nparams = top_stack->numargs;
- int iparams;
-
- if (nparams > 0)
- {
- ftype->alloc_fields (nparams);
-
- iparams = 0;
- for (struct symbol *sym : block_iterator_range (cblock))
- {
- if (iparams == nparams)
- break;
-
- if (sym->is_argument ())
- {
- ftype->field (iparams).set_type (sym->type ());
- ftype->field (iparams).set_is_artificial (false);
- iparams++;
- }
- }
- }
- }
- }
- else if (sh->sc == scText && top_stack->blocktype == stBlock)
- {
- /* End of (code) block. The value of the symbol is the
- displacement from the procedure`s start address of the
- end of this block. */
- top_stack->cur_block->set_end (sh->value + top_stack->procadr);
- }
- else if (sh->sc == scText && top_stack->blocktype == stNil)
- {
- /* End of outermost block. Pop parse stack and ignore. The
- following stEnd of stProc will take care of the block. */
- ;
- }
- else if (sh->sc == scText && top_stack->blocktype == stFile)
- {
- /* End of file. Pop parse stack and ignore. Higher
- level code deals with this. */
- ;
- }
- else
- complaint (_("stEnd with storage class %d not handled"), sh->sc);
-
- pop_parse_stack (); /* Restore previous lexical context. */
- break;
-
- case stMember: /* member of struct or union */
- {
- struct field *f = &top_stack->cur_type->field (top_stack->cur_field);
- top_stack->cur_field++;
- f->set_name (name);
- f->set_loc_bitpos (sh->value);
- bitsize = 0;
- f->set_type (parse_type (cur_fd, ax, sh->index, &bitsize, bigend,
- name));
- f->set_bitsize (bitsize);
- }
- break;
-
- case stIndirect: /* forward declaration on Irix5 */
- /* Forward declarations from Irix5 cc are handled by cross_ref,
- skip them. */
- break;
-
- case stTypedef: /* type definition */
- found_ecoff_debugging_info = 1;
-
- /* Typedefs for forward declarations and opaque structs from alpha cc
- are handled by cross_ref, skip them. */
- if (sh->iss == 0)
- break;
-
- /* Parse the type or use the pending type. */
- pend = is_pending_symbol (cur_fdr, ext_sh);
- if (pend == NULL)
- {
- t = parse_type (cur_fd, ax, sh->index, NULL, bigend, name);
- add_pending (cur_fdr, ext_sh, t);
- }
- else
- t = pend->t;
-
- /* Mips cc puts out a typedef with the name of the struct for forward
- declarations. These should not go into the symbol table and
- TYPE_NAME should not be set for them.
- They can't be distinguished from an intentional typedef to
- the same name however:
- x.h:
- struct x { int ix; int jx; };
- struct xx;
- x.c:
- typedef struct x x;
- struct xx {int ixx; int jxx; };
- generates a cross referencing stTypedef for x and xx.
- The user visible effect of this is that the type of a pointer
- to struct foo sometimes is given as `foo *' instead of `struct foo *'.
- The problem is fixed with alpha cc and Irix5 cc. */
-
- /* However if the typedef cross references to an opaque aggregate, it
- is safe to omit it from the symbol table. */
-
- if (has_opaque_xref (cur_fdr, sh))
- break;
- s = new_symbol (name);
- s->set_domain (TYPE_DOMAIN);
- s->set_loc_class_index (LOC_TYPEDEF);
- s->set_value_block (top_stack->cur_block);
- s->set_type (t);
- add_symbol (s, top_stack->cur_st, top_stack->cur_block);
-
- /* Incomplete definitions of structs should not get a name. */
- if (s->type ()->name () == NULL
- && (s->type ()->num_fields () != 0
- || (s->type ()->code () != TYPE_CODE_STRUCT
- && s->type ()->code () != TYPE_CODE_UNION)))
- {
- if (s->type ()->code () == TYPE_CODE_PTR
- || s->type ()->code () == TYPE_CODE_FUNC)
- {
- /* If we are giving a name to a type such as "pointer to
- foo" or "function returning foo", we better not set
- the TYPE_NAME. If the program contains "typedef char
- *caddr_t;", we don't want all variables of type char
- * to print as caddr_t. This is not just a
- consequence of GDB's type management; CC and GCC (at
- least through version 2.4) both output variables of
- either type char * or caddr_t with the type
- referring to the stTypedef symbol for caddr_t. If a future
- compiler cleans this up it GDB is not ready for it
- yet, but if it becomes ready we somehow need to
- disable this check (without breaking the PCC/GCC2.4
- case).
-
- Sigh.
-
- Fortunately, this check seems not to be necessary
- for anything except pointers or functions. */
- }
- else
- s->type ()->set_name (s->linkage_name ());
- }
- break;
-
- case stFile: /* file name */
- push_parse_stack ();
- top_stack->blocktype = sh->st;
- break;
-
- /* I`ve never seen these for C */
- case stRegReloc:
- break; /* register relocation */
- case stForward:
- break; /* forwarding address */
- case stConstant:
- break; /* constant */
- default:
- complaint (_("unknown symbol type 0x%x"), sh->st);
- break;
- }
-
- return count;
-}
-
-/* Basic types. */
-
-static const registry<objfile>::key<struct type *,
- gdb::noop_deleter<struct type *>>
- basic_type_data;
-
-static struct type *
-basic_type (int bt, struct objfile *objfile)
-{
- struct gdbarch *gdbarch = objfile->arch ();
- struct type **map_bt = basic_type_data.get (objfile);
- struct type *tp;
-
- if (bt >= btMax)
- return NULL;
-
- if (!map_bt)
- {
- map_bt = OBSTACK_CALLOC (&objfile->objfile_obstack,
- btMax, struct type *);
- basic_type_data.set (objfile, map_bt);
- }
-
- if (map_bt[bt])
- return map_bt[bt];
-
- type_allocator alloc (objfile, get_current_subfile ()->language);
-
- switch (bt)
- {
- case btNil:
- tp = builtin_type (objfile)->builtin_void;
- break;
-
- case btAdr:
- tp = init_pointer_type (alloc, 32, "adr_32",
- builtin_type (objfile)->builtin_void);
- break;
-
- case btChar:
- tp = init_integer_type (alloc, 8, 0, "char");
- tp->set_has_no_signedness (true);
- break;
-
- case btUChar:
- tp = init_integer_type (alloc, 8, 1, "unsigned char");
- break;
-
- case btShort:
- tp = init_integer_type (alloc, 16, 0, "short");
- break;
-
- case btUShort:
- tp = init_integer_type (alloc, 16, 1, "unsigned short");
- break;
-
- case btInt:
- tp = init_integer_type (alloc, 32, 0, "int");
- break;
-
- case btUInt:
- tp = init_integer_type (alloc, 32, 1, "unsigned int");
- break;
-
- case btLong:
- tp = init_integer_type (alloc, 32, 0, "long");
- break;
-
- case btULong:
- tp = init_integer_type (alloc, 32, 1, "unsigned long");
- break;
-
- case btFloat:
- tp = init_float_type (alloc, gdbarch_float_bit (gdbarch),
- "float", gdbarch_float_format (gdbarch));
- break;
-
- case btDouble:
- tp = init_float_type (alloc, gdbarch_double_bit (gdbarch),
- "double", gdbarch_double_format (gdbarch));
- break;
-
- case btComplex:
- tp = init_complex_type ("complex", basic_type (btFloat, objfile));
- break;
-
- case btDComplex:
- tp = init_complex_type ("double complex", basic_type (btFloat, objfile));
- break;
-
- case btFixedDec:
- /* We use TYPE_CODE_INT to print these as integers. Does this do any
- good? Would we be better off with TYPE_CODE_ERROR? Should
- TYPE_CODE_ERROR print things in hex if it knows the size? */
- tp = init_integer_type (alloc, gdbarch_int_bit (gdbarch), 0,
- "fixed decimal");
- break;
-
- case btFloatDec:
- tp = alloc.new_type (TYPE_CODE_ERROR,
- gdbarch_double_bit (gdbarch), "floating decimal");
- break;
-
- case btString:
- /* Is a "string" the way btString means it the same as TYPE_CODE_STRING?
- FIXME. */
- tp = alloc.new_type (TYPE_CODE_STRING, TARGET_CHAR_BIT, "string");
- break;
-
- case btVoid:
- tp = builtin_type (objfile)->builtin_void;
- break;
-
- case btLong64:
- tp = init_integer_type (alloc, 64, 0, "long");
- break;
-
- case btULong64:
- tp = init_integer_type (alloc, 64, 1, "unsigned long");
- break;
-
- case btLongLong64:
- tp = init_integer_type (alloc, 64, 0, "long long");
- break;
-
- case btULongLong64:
- tp = init_integer_type (alloc, 64, 1, "unsigned long long");
- break;
-
- case btAdr64:
- tp = init_pointer_type (alloc, 64, "adr_64",
- builtin_type (objfile)->builtin_void);
- break;
-
- case btInt64:
- tp = init_integer_type (alloc, 64, 0, "int");
- break;
-
- case btUInt64:
- tp = init_integer_type (alloc, 64, 1, "unsigned int");
- break;
-
- default:
- tp = NULL;
- break;
- }
-
- map_bt[bt] = tp;
- return tp;
-}
-
-/* Parse the type information provided in the raw AX entries for
- the symbol SH. Return the bitfield size in BS, in case.
- We must byte-swap the AX entries before we use them; BIGEND says whether
- they are big-endian or little-endian (from fh->fBigendian). */
-
-static struct type *
-parse_type (int fd, union aux_ext *ax, unsigned int aux_index, int *bs,
- int bigend, const char *sym_name)
-{
- TIR t[1];
- struct type *tp = 0;
- enum type_code type_code = TYPE_CODE_UNDEF;
-
- /* Handle undefined types, they have indexNil. */
- if (aux_index == indexNil)
- return basic_type (btInt, mdebugread_objfile);
-
- /* Handle corrupt aux indices. */
- if (aux_index >= (debug_info->fdr + fd)->caux)
- {
- index_complaint (sym_name);
- return basic_type (btInt, mdebugread_objfile);
- }
- ax += aux_index;
-
- /* Use aux as a type information record, map its basic type. */
- (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
- tp = basic_type (t->bt, mdebugread_objfile);
- if (tp == NULL)
- {
- /* Cannot use builtin types -- build our own. */
- switch (t->bt)
- {
- case btStruct:
- type_code = TYPE_CODE_STRUCT;
- break;
- case btUnion:
- type_code = TYPE_CODE_UNION;
- break;
- case btEnum:
- type_code = TYPE_CODE_ENUM;
- break;
- case btRange:
- type_code = TYPE_CODE_RANGE;
- break;
- case btSet:
- type_code = TYPE_CODE_SET;
- break;
- case btIndirect:
- /* alpha cc -migrate uses this for typedefs. The true type will
- be obtained by crossreferencing below. */
- type_code = TYPE_CODE_ERROR;
- break;
- case btTypedef:
- /* alpha cc uses this for typedefs. The true type will be
- obtained by crossreferencing below. */
- type_code = TYPE_CODE_ERROR;
- break;
- default:
- basic_type_complaint (t->bt, sym_name);
- return basic_type (btInt, mdebugread_objfile);
- }
- }
-
- type_allocator alloc (mdebugread_objfile, get_current_subfile ()->language);
-
- /* Move on to next aux. */
- ax++;
-
- if (t->fBitfield)
- {
- int width = AUX_GET_WIDTH (bigend, ax);
-
- /* Inhibit core dumps if TIR is corrupted. */
- if (bs == NULL)
- {
- /* Alpha cc -migrate encodes char and unsigned char types
- as short and unsigned short types with a field width of 8.
- Enum types also have a field width which we ignore for now. */
- if (t->bt == btShort && width == 8)
- tp = basic_type (btChar, mdebugread_objfile);
- else if (t->bt == btUShort && width == 8)
- tp = basic_type (btUChar, mdebugread_objfile);
- else if (t->bt == btEnum)
- ;
- else
- complaint (_("can't handle TIR fBitfield for %s"),
- sym_name);
- }
- else
- *bs = width;
- ax++;
- }
-
- /* A btIndirect entry cross references to an aux entry containing
- the type. */
- if (t->bt == btIndirect)
- {
- RNDXR rn[1];
- int rf;
- FDR *xref_fh;
- int xref_fd;
-
- (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
- ax++;
- if (rn->rfd == 0xfff)
- {
- rf = AUX_GET_ISYM (bigend, ax);
- ax++;
- }
- else
- rf = rn->rfd;
-
- if (rf == -1)
- {
- complaint (_("unable to cross ref btIndirect for %s"), sym_name);
- return basic_type (btInt, mdebugread_objfile);
- }
- xref_fh = get_rfd (fd, rf);
- xref_fd = xref_fh - debug_info->fdr;
- tp = parse_type (xref_fd, debug_info->external_aux + xref_fh->iauxBase,
- rn->index, NULL, xref_fh->fBigendian, sym_name);
- }
-
- /* All these types really point to some (common) MIPS type
- definition, and only the type-qualifiers fully identify
- them. We'll make the same effort at sharing. */
- if (t->bt == btStruct ||
- t->bt == btUnion ||
- t->bt == btEnum ||
-
- /* btSet (I think) implies that the name is a tag name, not a typedef
- name. This apparently is a MIPS extension for C sets. */
- t->bt == btSet)
- {
- const char *name;
-
- /* Try to cross reference this type, build new type on failure. */
- ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
- if (tp == NULL)
- tp = alloc.new_type (type_code, 0, NULL);
-
- /* DEC c89 produces cross references to qualified aggregate types,
- dereference them. */
- while (tp->code () == TYPE_CODE_PTR
- || tp->code () == TYPE_CODE_ARRAY)
- tp = tp->target_type ();
-
- /* Make sure that TYPE_CODE(tp) has an expected type code.
- Any type may be returned from cross_ref if file indirect entries
- are corrupted. */
- if (tp->code () != TYPE_CODE_STRUCT
- && tp->code () != TYPE_CODE_UNION
- && tp->code () != TYPE_CODE_ENUM)
- {
- unexpected_type_code_complaint (sym_name);
- }
- else
- {
- /* Usually, TYPE_CODE(tp) is already type_code. The main
- exception is if we guessed wrong re struct/union/enum.
- But for struct vs. union a wrong guess is harmless, so
- don't complain(). */
- if ((tp->code () == TYPE_CODE_ENUM
- && type_code != TYPE_CODE_ENUM)
- || (tp->code () != TYPE_CODE_ENUM
- && type_code == TYPE_CODE_ENUM))
- {
- bad_tag_guess_complaint (sym_name);
- }
-
- if (tp->code () != type_code)
- {
- tp->set_code (type_code);
- }
-
- /* Do not set the tag name if it is a compiler generated tag name
- (.Fxx or .xxfake or empty) for unnamed struct/union/enums. */
- if (name[0] == '.' || name[0] == '\0')
- tp->set_name (NULL);
- else if (tp->name () == NULL
- || strcmp (tp->name (), name) != 0)
- tp->set_name (obstack_strdup (&mdebugread_objfile->objfile_obstack,
- name));
- }
- }
-
- /* All these types really point to some (common) MIPS type
- definition, and only the type-qualifiers fully identify
- them. We'll make the same effort at sharing.
- FIXME: We are not doing any guessing on range types. */
- if (t->bt == btRange)
- {
- const char *name;
-
- /* Try to cross reference this type, build new type on failure. */
- ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
- if (tp == NULL)
- tp = alloc.new_type (type_code, 0, NULL);
-
- /* Make sure that TYPE_CODE(tp) has an expected type code.
- Any type may be returned from cross_ref if file indirect entries
- are corrupted. */
- if (tp->code () != TYPE_CODE_RANGE)
- {
- unexpected_type_code_complaint (sym_name);
- }
- else
- {
- /* Usually, TYPE_CODE(tp) is already type_code. The main
- exception is if we guessed wrong re struct/union/enum. */
- if (tp->code () != type_code)
- {
- bad_tag_guess_complaint (sym_name);
- tp->set_code (type_code);
- }
- if (tp->name () == NULL
- || strcmp (tp->name (), name) != 0)
- tp->set_name (obstack_strdup (&mdebugread_objfile->objfile_obstack,
- name));
- }
- }
- if (t->bt == btTypedef)
- {
- const char *name;
-
- /* Try to cross reference this type, it should succeed. */
- ax += cross_ref (fd, ax, &tp, type_code, &name, bigend, sym_name);
- if (tp == NULL)
- {
- complaint (_("unable to cross ref btTypedef for %s"), sym_name);
- tp = basic_type (btInt, mdebugread_objfile);
- }
- }
-
- /* Deal with range types. */
- if (t->bt == btRange)
- {
- tp->set_num_fields (0);
- tp->set_bounds (((struct range_bounds *)
- TYPE_ZALLOC (tp, sizeof (struct range_bounds))));
- tp->bounds ()->low.set_const_val (AUX_GET_DNLOW (bigend, ax));
- ax++;
- tp->bounds ()->high.set_const_val (AUX_GET_DNHIGH (bigend, ax));
- ax++;
- }
-
- /* Parse all the type qualifiers now. If there are more
- than 6 the game will continue in the next aux. */
-
- while (1)
- {
-#define PARSE_TQ(tq) \
- if (t->tq != tqNil) \
- ax += upgrade_type(fd, &tp, t->tq, ax, bigend, sym_name); \
- else \
- break;
-
- PARSE_TQ (tq0);
- PARSE_TQ (tq1);
- PARSE_TQ (tq2);
- PARSE_TQ (tq3);
- PARSE_TQ (tq4);
- PARSE_TQ (tq5);
-#undef PARSE_TQ
-
- /* mips cc 2.x and gcc never put out continued aux entries. */
- if (!t->continued)
- break;
-
- (*debug_swap->swap_tir_in) (bigend, &ax->a_ti, t);
- ax++;
- }
-
- /* Complain for illegal continuations due to corrupt aux entries. */
- if (t->continued)
- complaint (_("illegal TIR continued for %s"), sym_name);
-
- return tp;
-}
-
-/* Make up a complex type from a basic one. Type is passed by
- reference in TPP and side-effected as necessary. The type
- qualifier TQ says how to handle the aux symbols at AX for
- the symbol SX we are currently analyzing. BIGEND says whether
- aux symbols are big-endian or little-endian.
- Returns the number of aux symbols we parsed. */
-
-static int
-upgrade_type (int fd, struct type **tpp, int tq, union aux_ext *ax, int bigend,
- const char *sym_name)
-{
- int off;
- struct type *t;
-
- /* Used in array processing. */
- int rf, id;
- FDR *fh;
- struct type *range;
- struct type *indx;
- int lower, upper;
- RNDXR rndx;
-
- switch (tq)
- {
- case tqPtr:
- t = lookup_pointer_type (*tpp);
- *tpp = t;
- return 0;
-
- case tqProc:
- t = lookup_function_type (*tpp);
- *tpp = t;
- return 0;
-
- case tqArray:
- off = 0;
-
- /* Determine and record the domain type (type of index). */
- (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, &rndx);
- id = rndx.index;
- rf = rndx.rfd;
- if (rf == 0xfff)
- {
- ax++;
- rf = AUX_GET_ISYM (bigend, ax);
- off++;
- }
- fh = get_rfd (fd, rf);
-
- indx = parse_type (fh - debug_info->fdr,
- debug_info->external_aux + fh->iauxBase,
- id, NULL, bigend, sym_name);
-
- /* The bounds type should be an integer type, but might be anything
- else due to corrupt aux entries. */
- if (indx->code () != TYPE_CODE_INT)
- {
- complaint (_("illegal array index type for %s, assuming int"),
- sym_name);
- indx = builtin_type (mdebugread_objfile)->builtin_int;
- }
-
- /* Get the bounds, and create the array type. */
- ax++;
- lower = AUX_GET_DNLOW (bigend, ax);
- ax++;
- upper = AUX_GET_DNHIGH (bigend, ax);
- ax++;
- rf = AUX_GET_WIDTH (bigend, ax); /* bit size of array element */
-
- {
- type_allocator alloc (indx);
- range = create_static_range_type (alloc, indx, lower, upper);
-
- t = create_array_type (alloc, *tpp, range);
- }
-
- /* We used to fill in the supplied array element bitsize
- here if the TYPE_LENGTH of the target type was zero.
- This happens for a `pointer to an array of anonymous structs',
- but in this case the array element bitsize is also zero,
- so nothing is gained.
- And we used to check the TYPE_LENGTH of the target type against
- the supplied array element bitsize.
- gcc causes a mismatch for `pointer to array of object',
- since the sdb directives it uses do not have a way of
- specifying the bitsize, but it does no harm (the
- TYPE_LENGTH should be correct) and we should be able to
- ignore the erroneous bitsize from the auxiliary entry safely.
- dbx seems to ignore it too. */
-
- /* TYPE_TARGET_STUB now takes care of the zero TYPE_LENGTH problem. */
- if ((*tpp)->length () == 0)
- t->set_target_is_stub (true);
-
- *tpp = t;
- return 4 + off;
-
- case tqVol:
- /* Volatile -- currently ignored */
- return 0;
-
- case tqConst:
- /* Const -- currently ignored */
- return 0;
-
- default:
- complaint (_("unknown type qualifier 0x%x"), tq);
- return 0;
- }
-}
-
-
-/* Parse a procedure descriptor record PR. Note that the procedure is
- parsed _after_ the local symbols, now we just insert the extra
- information we need into a MDEBUG_EFI_SYMBOL_NAME symbol that has
- already been placed in the procedure's main block. Note also that
- images that have been partially stripped (ld -x) have been deprived
- of local symbols, and we have to cope with them here. FIRST_OFF is
- the offset of the first procedure for this FDR; we adjust the
- address by this amount, but I don't know why. SEARCH_SYMTAB is the symtab
- to look for the function which contains the MDEBUG_EFI_SYMBOL_NAME symbol
- in question, or NULL to use top_stack->cur_block. */
-
-static void
-parse_procedure (PDR *pr, struct compunit_symtab *search_symtab,
- legacy_psymtab *pst)
-{
- struct symbol *s, *i;
- const struct block *b;
- char *sh_name;
-
- /* Simple rule to find files linked "-x". */
- if (cur_fdr->rss == -1)
- {
- if (pr->isym == -1)
- {
- /* Static procedure at address pr->adr. Sigh. */
- /* FIXME-32x64. assuming pr->adr fits in long. */
- complaint (_("can't handle PDR for static proc at 0x%lx"),
- (unsigned long) pr->adr);
- return;
- }
- else
- {
- /* external */
- EXTR she;
-
- (*debug_swap->swap_ext_in) (cur_bfd,
- ((char *) debug_info->external_ext
- + (pr->isym
- * debug_swap->external_ext_size)),
- &she);
- sh_name = debug_info->ssext + she.asym.iss;
- }
- }
- else
- {
- /* Full symbols */
- SYMR sh;
-
- (*debug_swap->swap_sym_in) (cur_bfd,
- ((char *) debug_info->external_sym
- + ((cur_fdr->isymBase + pr->isym)
- * debug_swap->external_sym_size)),
- &sh);
- sh_name = debug_info->ss + cur_fdr->issBase + sh.iss;
- }
-
- if (search_symtab != NULL)
- {
-#if 0
- /* This loses both in the case mentioned (want a static, find a global),
- but also if we are looking up a non-mangled name which happens to
- match the name of a mangled function. */
- /* We have to save the cur_fdr across the call to lookup_symbol.
- If the pdr is for a static function and if a global function with
- the same name exists, lookup_symbol will eventually read in the symtab
- for the global function and clobber cur_fdr. */
- FDR *save_cur_fdr = cur_fdr;
-
- s = lookup_symbol (sh_name, NULL, VAR_DOMAIN, 0);
- cur_fdr = save_cur_fdr;
-#else
- s = mylookup_symbol
- (sh_name,
- search_symtab->blockvector ()->static_block (),
- VAR_DOMAIN,
- LOC_BLOCK);
-#endif
- }
- else
- s = mylookup_symbol (sh_name, top_stack->cur_block,
- VAR_DOMAIN, LOC_BLOCK);
-
- if (s != 0)
- {
- b = s->value_block ();
- }
- else
- {
- complaint (_("PDR for %s, but no symbol"), sh_name);
-#if 1
- return;
-#else
-/* FIXME -- delete. We can't do symbol allocation now; it's all done. */
- s = new_symbol (sh_name);
- s->set_domain (VAR_DOMAIN);
- SYMBOL_CLASS (s) = LOC_BLOCK;
- /* Don't know its type, hope int is ok. */
- s->type ()
- = lookup_function_type (builtin_type (pst->objfile)->builtin_int);
- add_symbol (s, top_stack->cur_st, top_stack->cur_block);
- /* Won't have symbols for this one. */
- b = new_block (2);
- SYMBOL_BLOCK_VALUE (s) = b;
- BLOCK_FUNCTION (b) = s;
- BLOCK_START (b) = pr->adr;
- /* BOUND used to be the end of procedure's text, but the
- argument is no longer passed in. */
- BLOCK_END (b) = bound;
- BLOCK_SUPERBLOCK (b) = top_stack->cur_block;
- add_block (b, top_stack->cur_st);
-#endif
- }
-
- i = mylookup_symbol (MDEBUG_EFI_SYMBOL_NAME, b, LABEL_DOMAIN, LOC_CONST);
-
- if (i)
- {
- struct mdebug_extra_func_info *e;
-
- e = (struct mdebug_extra_func_info *) i->value_bytes ();
- e->pdr = *pr;
-
- /* GDB expects the absolute function start address for the
- procedure descriptor in e->pdr.adr.
- As the address in the procedure descriptor is usually relative,
- we would have to relocate e->pdr.adr with cur_fdr->adr.
- Unfortunately cur_fdr->adr and e->pdr.adr are both absolute
- in shared libraries on some systems, and on other systems
- e->pdr.adr is sometimes offset by a bogus value.
- To work around these problems, we replace e->pdr.adr with
- the start address of the function. */
- e->pdr.adr = b->start ();
- }
-
- /* It would be reasonable that functions that have been compiled
- without debugging info have a btNil type for their return value,
- and functions that are void and are compiled with debugging info
- have btVoid.
- gcc and DEC f77 put out btNil types for both cases, so btNil is mapped
- to TYPE_CODE_VOID in parse_type to get the `compiled with debugging info'
- case right.
- The glevel field in cur_fdr could be used to determine the presence
- of debugging info, but GCC doesn't always pass the -g switch settings
- to the assembler and GAS doesn't set the glevel field from the -g switch
- settings.
- To work around these problems, the return value type of a TYPE_CODE_VOID
- function is adjusted accordingly if no debugging info was found in the
- compilation unit. */
-
- if (found_ecoff_debugging_info == 0
- && s->type ()->target_type ()->code () == TYPE_CODE_VOID)
- s->set_type (builtin_type (mdebugread_objfile)->nodebug_text_symbol);
-}
-
-/* Parse the external symbol ES. Just call parse_symbol() after
- making sure we know where the aux are for it.
- BIGEND says whether aux entries are big-endian or little-endian.
-
- This routine clobbers top_stack->cur_block and ->cur_st. */
-
-static void
-parse_external (EXTR *es, int bigend,
- gdb::array_view<const CORE_ADDR> section_offsets,
- struct objfile *objfile)
-{
- union aux_ext *ax;
-
- if (es->ifd != ifdNil)
- {
- cur_fd = es->ifd;
- cur_fdr = debug_info->fdr + cur_fd;
- ax = debug_info->external_aux + cur_fdr->iauxBase;
- }
- else
- {
- cur_fdr = debug_info->fdr;
- ax = 0;
- }
-
- /* Reading .o files */
- if (SC_IS_UNDEF (es->asym.sc) || es->asym.sc == scNil)
- {
- const char *what;
- switch (es->asym.st)
- {
- case stNil:
- /* These are generated for static symbols in .o files,
- ignore them. */
- return;
- case stStaticProc:
- case stProc:
- what = "procedure";
- n_undef_procs++;
- break;
- case stGlobal:
- what = "variable";
- n_undef_vars++;
- break;
- case stLabel:
- what = "label";
- n_undef_labels++;
- break;
- default:
- what = "symbol";
- break;
- }
- n_undef_symbols++;
- /* FIXME: Turn this into a complaint? */
- if (info_verbose)
- gdb_printf (_("Warning: %s `%s' is undefined (in %s)\n"),
- what, debug_info->ssext + es->asym.iss,
- fdr_name (cur_fdr));
- return;
- }
-
- switch (es->asym.st)
- {
- case stProc:
- case stStaticProc:
- /* There is no need to parse the external procedure symbols.
- If they are from objects compiled without -g, their index will
- be indexNil, and the symbol definition from the minimal symbol
- is preferable (yielding a function returning int instead of int).
- If the index points to a local procedure symbol, the local
- symbol already provides the correct type.
- Note that the index of the external procedure symbol points
- to the local procedure symbol in the local symbol table, and
- _not_ to the auxiliary symbol info. */
- break;
- case stGlobal:
- case stLabel:
- /* Global common symbols are resolved by the runtime loader,
- ignore them. */
- if (SC_IS_COMMON (es->asym.sc))
- break;
-
- /* Note that the case of a symbol with indexNil must be handled
- anyways by parse_symbol(). */
- parse_symbol (&es->asym, ax, NULL,
- bigend, section_offsets, objfile);
- break;
- default:
- break;
- }
-}
-
-/* Parse the line number info for file descriptor FH into
- GDB's linetable LT. MIPS' encoding requires a little bit
- of magic to get things out. Note also that MIPS' line
- numbers can go back and forth, apparently we can live
- with that and do not need to reorder our linetables. */
-
-static void
-parse_lines (FDR *fh, PDR *pr, struct linetable *lt, int maxlines,
- CORE_ADDR lowest_pdr_addr)
-{
- unsigned char *base;
- int j, k;
- int delta, count, lineno = 0;
-
- if (fh->cbLine == 0)
- return;
-
- /* Scan by procedure descriptors. */
- k = 0;
- for (j = 0; j < fh->cpd; j++, pr++)
- {
- CORE_ADDR l;
- CORE_ADDR adr;
- unsigned char *halt;
-
- /* No code for this one. */
- if (pr->iline == ilineNil ||
- pr->lnLow == -1 || pr->lnHigh == -1)
- continue;
-
- /* Determine start and end address of compressed line bytes for
- this procedure. */
- base = debug_info->line + fh->cbLineOffset;
- if (j != (fh->cpd - 1))
- halt = base + pr[1].cbLineOffset;
- else
- halt = base + fh->cbLine;
- base += pr->cbLineOffset;
-
- adr = pr->adr - lowest_pdr_addr;
-
- l = adr >> 2; /* in words */
- for (lineno = pr->lnLow; base < halt;)
- {
- count = *base & 0x0f;
- delta = *base++ >> 4;
- if (delta >= 8)
- delta -= 16;
- if (delta == -8)
- {
- delta = (base[0] << 8) | base[1];
- if (delta >= 0x8000)
- delta -= 0x10000;
- base += 2;
- }
- lineno += delta; /* first delta is 0 */
-
- /* Complain if the line table overflows. Could happen
- with corrupt binaries. */
- if (lt->nitems >= maxlines)
- {
- complaint (_("guessed size of linetable for %s incorrectly"),
- fdr_name (fh));
- break;
- }
- k = add_line (lt, lineno, l, k);
- l += count + 1;
- }
- }
-}
-
-/* Use the STORAGE_CLASS to compute which section the given symbol
- belongs to, and then records this new minimal symbol. */
-
-static void
-record_minimal_symbol (minimal_symbol_reader &reader,
- const char *name, const unrelocated_addr address,
- enum minimal_symbol_type ms_type, int storage_class,
- struct objfile *objfile)
-{
- int section;
-
- switch (storage_class)
- {
- case scText:
- section = SECT_OFF_TEXT (objfile);
- break;
- case scData:
- section = SECT_OFF_DATA (objfile);
- break;
- case scBss:
- section = SECT_OFF_BSS (objfile);
- break;
- case scSData:
- section = get_section_index (objfile, ".sdata");
- break;
- case scSBss:
- section = get_section_index (objfile, ".sbss");
- break;
- case scRData:
- section = get_section_index (objfile, ".rdata");
- break;
- case scInit:
- section = get_section_index (objfile, ".init");
- break;
- case scXData:
- section = get_section_index (objfile, ".xdata");
- break;
- case scPData:
- section = get_section_index (objfile, ".pdata");
- break;
- case scFini:
- section = get_section_index (objfile, ".fini");
- break;
- case scRConst:
- section = get_section_index (objfile, ".rconst");
- break;
-#ifdef scTlsData
- case scTlsData:
- section = get_section_index (objfile, ".tlsdata");
- break;
-#endif
-#ifdef scTlsBss
- case scTlsBss:
- section = get_section_index (objfile, ".tlsbss");
- break;
-#endif
- default:
- /* This kind of symbol is not associated to a section. */
- section = -1;
- }
-
- reader.record_with_info (name, address, ms_type, section);
-}
-
-/* Master parsing procedure for first-pass reading of file symbols
- into a partial_symtab. */
-
-static void
-parse_partial_symbols (minimal_symbol_reader &reader,
- psymtab_storage *partial_symtabs,
- struct objfile *objfile)
-{
- const bfd_size_type external_sym_size = debug_swap->external_sym_size;
- const bfd_size_type external_rfd_size = debug_swap->external_rfd_size;
- const bfd_size_type external_ext_size = debug_swap->external_ext_size;
- void (*const swap_ext_in) (bfd *, void *, EXTR *) = debug_swap->swap_ext_in;
- void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in;
- void (*const swap_rfd_in) (bfd *, void *, RFDT *) = debug_swap->swap_rfd_in;
- int f_idx, s_idx;
- HDRR *hdr = &debug_info->symbolic_header;
- /* Running pointers */
- FDR *fh;
- char *ext_out;
- char *ext_out_end;
- EXTR *ext_in;
- EXTR *ext_in_end;
- SYMR sh;
- legacy_psymtab *pst;
-
- /* List of current psymtab's include files. */
- EXTR *extern_tab;
- struct pst_map *fdr_to_pst;
- /* Index within current psymtab dependency list. */
- char *name;
- enum language prev_language;
- asection *text_sect;
- int relocatable = 0;
-
- /* Irix 5.2 shared libraries have a fh->adr field of zero, but
- the shared libraries are prelinked at a high memory address.
- We have to adjust the start address of the object file for this case,
- by setting it to the start address of the first procedure in the file.
- But we should do no adjustments if we are debugging a .o file, where
- the text section (and fh->adr) really starts at zero. */
- text_sect = bfd_get_section_by_name (cur_bfd, ".text");
- if (text_sect != NULL
- && (bfd_section_flags (text_sect) & SEC_RELOC))
- relocatable = 1;
-
- extern_tab = XOBNEWVEC (&objfile->objfile_obstack, EXTR, hdr->iextMax);
-
- set_last_source_file (NULL);
-
- /*
- * Big plan:
- *
- * Only parse the Local and External symbols, and the Relative FDR.
- * Fixup enough of the loader symtab to be able to use it.
- * Allocate space only for the file's portions we need to
- * look at. (XXX)
- */
-
- max_gdbinfo = 0;
- max_glevel = MIN_GLEVEL;
-
- /* Allocate the map FDR -> PST.
- Minor hack: -O3 images might claim some global data belongs
- to FDR -1. We`ll go along with that. */
- std::vector<struct pst_map> fdr_to_pst_holder (hdr->ifdMax + 1);
- fdr_to_pst = fdr_to_pst_holder.data ();
- fdr_to_pst++;
- {
- legacy_psymtab *new_pst = new_psymtab ("", partial_symtabs, objfile);
-
- fdr_to_pst[-1].pst = new_pst;
- FDR_IDX (new_pst) = -1;
- }
-
- /* Allocate the global pending list. */
- pending_list = XOBNEWVEC (&objfile->objfile_obstack, mdebug_pending *,
- hdr->ifdMax);
- memset (pending_list, 0,
- hdr->ifdMax * sizeof (struct mdebug_pending *));
-
- /* Pass 0 over external syms: swap them in. */
- gdb::def_vector<EXTR> ext_block (hdr->iextMax);
-
- ext_out = (char *) debug_info->external_ext;
- ext_out_end = ext_out + hdr->iextMax * external_ext_size;
- ext_in = ext_block.data ();
- for (; ext_out < ext_out_end; ext_out += external_ext_size, ext_in++)
- (*swap_ext_in) (cur_bfd, ext_out, ext_in);
-
- /* Pass 1 over external syms: Presize and partition the list. */
- ext_in = ext_block.data ();
- ext_in_end = ext_in + hdr->iextMax;
- for (; ext_in < ext_in_end; ext_in++)
- {
- /* See calls to complain below. */
- if (ext_in->ifd >= -1
- && ext_in->ifd < hdr->ifdMax
- && ext_in->asym.iss >= 0
- && ext_in->asym.iss < hdr->issExtMax)
- fdr_to_pst[ext_in->ifd].n_globals++;
- }
-
- /* Pass 1.5 over files: partition out global symbol space. */
- s_idx = 0;
- for (f_idx = -1; f_idx < hdr->ifdMax; f_idx++)
- {
- fdr_to_pst[f_idx].globals_offset = s_idx;
- s_idx += fdr_to_pst[f_idx].n_globals;
- fdr_to_pst[f_idx].n_globals = 0;
- }
-
- /* ECOFF in ELF:
-
- For ECOFF in ELF, we skip the creation of the minimal symbols.
- The ECOFF symbols should be a subset of the Elf symbols, and the
- section information of the elf symbols will be more accurate.
- FIXME! What about Irix 5's native linker?
-
- By default, Elf sections which don't exist in ECOFF
- get put in ECOFF's absolute section by the gnu linker.
- Since absolute sections don't get relocated, we
- end up calculating an address different from that of
- the symbol's minimal symbol (created earlier from the
- Elf symtab).
-
- To fix this, either :
- 1) don't create the duplicate symbol
- (assumes ECOFF symtab is a subset of the ELF symtab;
- assumes no side-effects result from ignoring ECOFF symbol)
- 2) create it, only if lookup for existing symbol in ELF's minimal
- symbols fails
- (inefficient;
- assumes no side-effects result from ignoring ECOFF symbol)
- 3) create it, but lookup ELF's minimal symbol and use it's section
- during relocation, then modify "uniquify" phase to merge and
- eliminate the duplicate symbol
- (highly inefficient)
-
- I've implemented #1 here...
- Skip the creation of the minimal symbols based on the ECOFF
- symbol table. */
-
- /* Pass 2 over external syms: fill in external symbols. */
- ext_in = ext_block.data ();
- ext_in_end = ext_in + hdr->iextMax;
- for (; ext_in < ext_in_end; ext_in++)
- {
- enum minimal_symbol_type ms_type = mst_text;
- unrelocated_addr svalue = unrelocated_addr (ext_in->asym.value);
-
- /* The Irix 5 native tools seem to sometimes generate bogus
- external symbols. */
- if (ext_in->ifd < -1 || ext_in->ifd >= hdr->ifdMax)
- {
- complaint (_("bad ifd for external symbol: %d (max %ld)"),
- ext_in->ifd, hdr->ifdMax);
- continue;
- }
- if (ext_in->asym.iss < 0 || ext_in->asym.iss >= hdr->issExtMax)
- {
- complaint (_("bad iss for external symbol: %ld (max %ld)"),
- ext_in->asym.iss, hdr->issExtMax);
- continue;
- }
-
- extern_tab[fdr_to_pst[ext_in->ifd].globals_offset
- + fdr_to_pst[ext_in->ifd].n_globals++] = *ext_in;
-
-
- if (SC_IS_UNDEF (ext_in->asym.sc) || ext_in->asym.sc == scNil)
- continue;
-
-
- /* Pass 3 over files, over local syms: fill in static symbols. */
- name = debug_info->ssext + ext_in->asym.iss;
-
- /* Process ECOFF Symbol Types and Storage Classes. */
- switch (ext_in->asym.st)
- {
- case stProc:
- /* Beginning of Procedure */
- break;
- case stStaticProc:
- /* Load time only static procs */
- ms_type = mst_file_text;
- break;
- case stGlobal:
- /* External symbol */
- if (SC_IS_COMMON (ext_in->asym.sc))
- {
- /* The value of a common symbol is its size, not its address.
- Ignore it. */
- continue;
- }
- else if (SC_IS_DATA (ext_in->asym.sc))
- {
- ms_type = mst_data;
- }
- else if (SC_IS_BSS (ext_in->asym.sc))
- {
- ms_type = mst_bss;
- }
- else if (SC_IS_SBSS (ext_in->asym.sc))
- {
- ms_type = mst_bss;
- }
- else
- ms_type = mst_abs;
- break;
- case stLabel:
- /* Label */
-
- /* On certain platforms, some extra label symbols can be
- generated by the linker. One possible usage for this kind
- of symbols is to represent the address of the beginning of a
- given section. For instance, on Tru64 5.1, the address of
- the _ftext label is the start address of the .text section.
-
- The storage class of these symbols is usually directly
- related to the section to which the symbol refers. For
- instance, on Tru64 5.1, the storage class for the _fdata
- label is scData, referring to the .data section.
-
- It is actually possible that the section associated to the
- storage class of the label does not exist. On True64 5.1
- for instance, the libm.so shared library does not contain
- any .data section, although it contains a _fpdata label
- which storage class is scData... Since these symbols are
- usually useless for the debugger user anyway, we just
- discard these symbols. */
-
- if (SC_IS_TEXT (ext_in->asym.sc))
- {
- if (objfile->sect_index_text == -1)
- continue;
-
- ms_type = mst_file_text;
- }
- else if (SC_IS_DATA (ext_in->asym.sc))
- {
- if (objfile->sect_index_data == -1)
- continue;
-
- ms_type = mst_file_data;
- }
- else if (SC_IS_BSS (ext_in->asym.sc))
- {
- if (objfile->sect_index_bss == -1)
- continue;
-
- ms_type = mst_file_bss;
- }
- else if (SC_IS_SBSS (ext_in->asym.sc))
- {
- const int sbss_sect_index = get_section_index (objfile, ".sbss");
-
- if (sbss_sect_index == -1)
- continue;
-
- ms_type = mst_file_bss;
- }
- else
- ms_type = mst_abs;
- break;
- case stLocal:
- case stNil:
- /* The alpha has the section start addresses in stLocal symbols
- whose name starts with a `.'. Skip those but complain for all
- other stLocal symbols.
- Irix6 puts the section start addresses in stNil symbols, skip
- those too. */
- if (name[0] == '.')
- continue;
- [[fallthrough]];
- default:
- ms_type = mst_unknown;
- unknown_ext_complaint (name);
- }
- if (!ECOFF_IN_ELF (cur_bfd))
- record_minimal_symbol (reader, name, svalue, ms_type, ext_in->asym.sc,
- objfile);
- }
-
- /* Pass 3 over files, over local syms: fill in static symbols. */
- for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
- {
- legacy_psymtab *save_pst;
- EXTR *ext_ptr;
- unrelocated_addr textlow;
-
- cur_fdr = fh = debug_info->fdr + f_idx;
-
- if (fh->csym == 0)
- {
- fdr_to_pst[f_idx].pst = NULL;
- continue;
- }
-
- /* Determine the start address for this object file from the
- file header and relocate it, except for Irix 5.2 zero fh->adr. */
- if (fh->cpd)
- textlow = unrelocated_addr (fh->adr);
- else
- textlow = unrelocated_addr (0);
- pst = new legacy_psymtab (fdr_name (fh), partial_symtabs,
- objfile->per_bfd, textlow);
- pst->read_symtab_private = XOBNEW (&objfile->objfile_obstack, md_symloc);
- memset (pst->read_symtab_private, 0, sizeof (struct md_symloc));
-
- save_pst = pst;
- FDR_IDX (pst) = f_idx;
- CUR_BFD (pst) = cur_bfd;
- DEBUG_SWAP (pst) = debug_swap;
- DEBUG_INFO (pst) = debug_info;
- PENDING_LIST (pst) = pending_list;
-
- /* The way to turn this into a symtab is to call... */
- pst->legacy_read_symtab = mdebug_read_symtab;
- pst->legacy_expand_psymtab = mdebug_expand_psymtab;
-
- /* Set up language for the pst.
- The language from the FDR is used if it is unambiguous (e.g. cfront
- with native cc and g++ will set the language to C).
- Otherwise we have to deduce the language from the filename.
- Native ecoff has every header file in a separate FDR, so
- deduce_language_from_filename will return language_unknown for
- a header file, which is not what we want.
- But the FDRs for the header files are after the FDR for the source
- file, so we can assign the language of the source file to the
- following header files. Then we save the language in the private
- pst data so that we can reuse it when building symtabs. */
- prev_language = psymtab_language;
-
- switch (fh->lang)
- {
- case langCplusplusV2:
- psymtab_language = language_cplus;
- break;
- default:
- psymtab_language = deduce_language_from_filename (fdr_name (fh));
- break;
- }
- if (psymtab_language == language_unknown)
- psymtab_language = prev_language;
- PST_PRIVATE (pst)->pst_language = psymtab_language;
-
- pst->set_text_high (pst->unrelocated_text_low ());
-
- /* For stabs-in-ecoff files, the second symbol must be @stab.
- This symbol is emitted by mips-tfile to signal that the
- current object file uses encapsulated stabs instead of mips
- ecoff for local symbols. (It is the second symbol because
- the first symbol is the stFile used to signal the start of a
- file). */
- if (fh->csym >= 2)
- {
- (*swap_sym_in) (cur_bfd,
- ((char *) debug_info->external_sym
- + (fh->isymBase + 1) * external_sym_size),
- &sh);
- if (strcmp (debug_info->ss + fh->issBase + sh.iss,
- stabs_symbol) == 0)
- error ("GDB no longer supports stabs debug information.");
- }
-
- for (cur_sdx = 0; cur_sdx < fh->csym;)
- {
- char *sym_name;
- enum location_class theclass;
- unrelocated_addr minsym_value;
- int section = -1;
-
- (*swap_sym_in) (cur_bfd,
- ((char *) debug_info->external_sym
- + ((fh->isymBase + cur_sdx)
- * external_sym_size)),
- &sh);
-
- if (ECOFF_IS_STAB (&sh))
- {
- cur_sdx++;
- continue;
- }
-
- /* Non absolute static symbols go into the minimal table. */
- if (SC_IS_UNDEF (sh.sc) || sh.sc == scNil
- || (sh.index == indexNil
- && (sh.st != stStatic || sh.sc == scAbs)))
- {
- /* FIXME, premature? */
- cur_sdx++;
- continue;
- }
-
- sym_name = debug_info->ss + fh->issBase + sh.iss;
-
- minsym_value = unrelocated_addr (sh.value);
-
- switch (sh.sc)
- {
- case scText:
- case scRConst:
- /* The value of a stEnd symbol is the displacement from the
- corresponding start symbol value, do not relocate it. */
- if (sh.st != stEnd)
- section = SECT_OFF_TEXT (objfile);
- break;
- case scData:
- case scSData:
- case scRData:
- case scPData:
- case scXData:
- section = SECT_OFF_DATA (objfile);
- break;
- case scBss:
- case scSBss:
- section = SECT_OFF_BSS (objfile);
- break;
- }
-
- switch (sh.st)
- {
- unrelocated_addr high;
- unrelocated_addr procaddr;
- int new_sdx;
-
- case stStaticProc:
- reader.record_with_info (sym_name, minsym_value,
- mst_file_text,
- SECT_OFF_TEXT (objfile));
-
- [[fallthrough]];
-
- case stProc:
- /* Ignore all parameter symbol records. */
- if (sh.index >= hdr->iauxMax)
- {
- /* Should not happen, but does when cross-compiling
- with the MIPS compiler. FIXME -- pull later. */
- index_complaint (sym_name);
- new_sdx = cur_sdx + 1; /* Don't skip at all. */
- }
- else
- new_sdx = AUX_GET_ISYM (fh->fBigendian,
- (debug_info->external_aux
- + fh->iauxBase
- + sh.index));
-
- if (new_sdx <= cur_sdx)
- {
- /* This should not happen either... FIXME. */
- complaint (_("bad proc end in aux found from symbol %s"),
- sym_name);
- new_sdx = cur_sdx + 1; /* Don't skip backward. */
- }
-
- /* For stProc symbol records, we need to check the
- storage class as well, as only (stProc, scText)
- entries represent "real" procedures - See the
- Compaq document titled "Object File / Symbol Table
- Format Specification" for more information. If the
- storage class is not scText, we discard the whole
- block of symbol records for this stProc. */
- if (sh.st == stProc && sh.sc != scText)
- goto skip;
-
- /* Usually there is a local and a global stProc symbol
- for a function. This means that the function name
- has already been entered into the minimal symbol table
- while processing the global symbols in pass 2 above.
- One notable exception is the PROGRAM name from
- f77 compiled executables, it is only put out as
- local stProc symbol, and a global MAIN__ stProc symbol
- points to it. It doesn't matter though, as gdb is
- still able to find the PROGRAM name via the partial
- symbol table, and the MAIN__ symbol via the minimal
- symbol table. */
- if (sh.st == stProc)
- pst->add_psymbol (sym_name, true,
- VAR_DOMAIN, LOC_BLOCK,
- section,
- psymbol_placement::GLOBAL,
- unrelocated_addr (sh.value),
- psymtab_language,
- partial_symtabs, objfile);
- else
- pst->add_psymbol (sym_name, true,
- VAR_DOMAIN, LOC_BLOCK,
- section,
- psymbol_placement::STATIC,
- unrelocated_addr (sh.value),
- psymtab_language,
- partial_symtabs, objfile);
-
- procaddr = unrelocated_addr (sh.value);
-
- cur_sdx = new_sdx;
- (*swap_sym_in) (cur_bfd,
- ((char *) debug_info->external_sym
- + ((fh->isymBase + cur_sdx - 1)
- * external_sym_size)),
- &sh);
- if (sh.st != stEnd)
- continue;
-
- /* Kludge for Irix 5.2 zero fh->adr. */
- if (!relocatable
- && (!pst->text_low_valid
- || procaddr < pst->unrelocated_text_low ()))
- pst->set_text_low (procaddr);
-
- high = unrelocated_addr (CORE_ADDR (procaddr) + sh.value);
- if (high > pst->unrelocated_text_high ())
- pst->set_text_high (high);
- continue;
-
- case stStatic: /* Variable */
- if (SC_IS_DATA (sh.sc))
- reader.record_with_info (sym_name, minsym_value,
- mst_file_data,
- SECT_OFF_DATA (objfile));
- else
- reader.record_with_info (sym_name, minsym_value,
- mst_file_bss,
- SECT_OFF_BSS (objfile));
- theclass = LOC_STATIC;
- break;
-
- case stIndirect: /* Irix5 forward declaration */
- /* Skip forward declarations from Irix5 cc. */
- goto skip;
-
- case stTypedef: /* Typedef */
- /* Skip typedefs for forward declarations and opaque
- structs from alpha and mips cc. */
- if (sh.iss == 0 || has_opaque_xref (fh, &sh))
- goto skip;
- theclass = LOC_TYPEDEF;
- break;
-
- case stConstant: /* Constant decl */
- theclass = LOC_CONST;
- break;
-
- case stUnion:
- case stStruct:
- case stEnum:
- case stBlock: /* { }, str, un, enum */
- /* Do not create a partial symbol for cc unnamed aggregates
- and gcc empty aggregates. */
- if ((sh.sc == scInfo
- || SC_IS_COMMON (sh.sc))
- && sh.iss != 0
- && sh.index != cur_sdx + 2)
- {
- pst->add_psymbol (sym_name, true,
- STRUCT_DOMAIN, LOC_TYPEDEF, -1,
- psymbol_placement::STATIC,
- unrelocated_addr (0),
- psymtab_language,
- partial_symtabs, objfile);
- }
- handle_psymbol_enumerators (objfile, partial_symtabs,
- pst, fh, sh.st, sh.value);
-
- /* Skip over the block. */
- new_sdx = sh.index;
- if (new_sdx <= cur_sdx)
- {
- /* This happens with the Ultrix kernel. */
- complaint (_("bad aux index at block symbol %s"),
- sym_name);
- new_sdx = cur_sdx + 1; /* Don't skip backward. */
- }
- cur_sdx = new_sdx;
- continue;
-
- case stFile: /* File headers */
- case stLabel: /* Labels */
- case stEnd: /* Ends of files */
- goto skip;
-
- case stLocal: /* Local variables */
- /* Normally these are skipped because we skip over
- all blocks we see. However, these can occur
- as visible symbols in a .h file that contains code. */
- goto skip;
-
- default:
- /* Both complaints are valid: one gives symbol sym_name,
- the other the offending symbol type. */
- complaint (_("unknown local symbol %s"),
- sym_name);
- complaint (_("with type %d"), sh.st);
- cur_sdx++;
- continue;
- }
- /* Use this gdb symbol. */
- pst->add_psymbol (sym_name, true,
- VAR_DOMAIN, theclass, section,
- psymbol_placement::STATIC,
- unrelocated_addr (sh.value),
- psymtab_language,
- partial_symtabs, objfile);
- skip:
- cur_sdx++; /* Go to next file symbol. */
- }
-
- /* Now do enter the external symbols. */
- ext_ptr = &extern_tab[fdr_to_pst[f_idx].globals_offset];
- cur_sdx = fdr_to_pst[f_idx].n_globals;
- PST_PRIVATE (save_pst)->extern_count = cur_sdx;
- PST_PRIVATE (save_pst)->extern_tab = ext_ptr;
- for (; --cur_sdx >= 0; ext_ptr++)
- {
- enum location_class theclass;
- SYMR *psh;
- CORE_ADDR svalue;
- int section;
-
- gdb_assert (ext_ptr->ifd == f_idx);
-
- psh = &ext_ptr->asym;
-
- /* Do not add undefined symbols to the partial symbol table. */
- if (SC_IS_UNDEF (psh->sc) || psh->sc == scNil)
- continue;
-
- svalue = psh->value;
- switch (psh->sc)
- {
- default:
- case scText:
- case scRConst:
- section = SECT_OFF_TEXT (objfile);
- break;
- case scData:
- case scSData:
- case scRData:
- case scPData:
- case scXData:
- section = SECT_OFF_DATA (objfile);
- break;
- case scBss:
- case scSBss:
- section = SECT_OFF_BSS (objfile);
- break;
- }
-
- switch (psh->st)
- {
- case stNil:
- /* These are generated for static symbols in .o files,
- ignore them. */
- continue;
- case stProc:
- case stStaticProc:
- /* External procedure symbols have been entered
- into the minimal symbol table in pass 2 above.
- Ignore them, as parse_external will ignore them too. */
- continue;
- case stLabel:
- theclass = LOC_LABEL;
- break;
- default:
- unknown_ext_complaint (debug_info->ssext + psh->iss);
- /* Pretend it's global. */
- [[fallthrough]];
- case stGlobal:
- /* Global common symbols are resolved by the runtime loader,
- ignore them. */
- if (SC_IS_COMMON (psh->sc))
- continue;
-
- theclass = LOC_STATIC;
- break;
- }
- char *sym_name = debug_info->ssext + psh->iss;
- pst->add_psymbol (sym_name, true,
- VAR_DOMAIN, theclass,
- section,
- psymbol_placement::GLOBAL,
- unrelocated_addr (svalue),
- psymtab_language,
- partial_symtabs, objfile);
- }
-
- /* Link pst to FDR. Link NULL if the psymtab was empty and put on
- the free list. */
- if (save_pst->empty ())
- {
- partial_symtabs->discard_psymtab (save_pst);
- save_pst = nullptr;
- }
- else
- {
- save_pst->end ();
- save_pst->number_of_dependencies = 0;
- save_pst->dependencies = nullptr;
- }
- fdr_to_pst[f_idx].pst = save_pst;
- }
-
- /* Now scan the FDRs for dependencies. */
- for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++)
- {
- fh = f_idx + debug_info->fdr;
- pst = fdr_to_pst[f_idx].pst;
-
- if (pst == NULL)
- continue;
-
- /* This should catch stabs-in-ecoff. */
- if (fh->crfd <= 1)
- continue;
-
- /* Skip the first file indirect entry as it is a self dependency for
- source files or a reverse .h -> .c dependency for header files. */
- pst->number_of_dependencies = 0;
- pst->dependencies
- = partial_symtabs->allocate_dependencies (fh->crfd - 1);
- for (s_idx = 1; s_idx < fh->crfd; s_idx++)
- {
- RFDT rh;
-
- (*swap_rfd_in) (cur_bfd,
- ((char *) debug_info->external_rfd
- + (fh->rfdBase + s_idx) * external_rfd_size),
- &rh);
- if (rh < 0 || rh >= hdr->ifdMax)
- {
- complaint (_("bad file number %ld"), rh);
- continue;
- }
-
- /* Skip self dependencies of header files. */
- if (rh == f_idx)
- continue;
-
- /* Do not add to dependency list if psymtab was empty. */
- if (fdr_to_pst[rh].pst == NULL)
- continue;
- pst->dependencies[pst->number_of_dependencies++]
- = fdr_to_pst[rh].pst;
- }
- }
-
- /* Remove the dummy psymtab created for -O3 images above, if it is
- still empty, to enable the detection of stripped executables. */
- partial_symtab *pst_del = partial_symtabs->psymtabs;
- if (pst_del->next == NULL
- && pst_del->number_of_dependencies == 0
- && pst_del->empty ())
- partial_symtabs->discard_psymtab (pst_del);
-}
-
-/* If the current psymbol has an enumerated type, we need to add
- all the enum constants to the partial symbol table. */
-
-static void
-handle_psymbol_enumerators (struct objfile *objfile,
- psymtab_storage *partial_symtabs,
- partial_symtab *pst,
- FDR *fh, int stype, CORE_ADDR svalue)
-{
- const bfd_size_type external_sym_size = debug_swap->external_sym_size;
- void (*const swap_sym_in) (bfd *, void *, SYMR *) = debug_swap->swap_sym_in;
- char *ext_sym = ((char *) debug_info->external_sym
- + ((fh->isymBase + cur_sdx + 1) * external_sym_size));
- SYMR sh;
- TIR tir;
-
- switch (stype)
- {
- case stEnum:
- break;
-
- case stBlock:
- /* It is an enumerated type if the next symbol entry is a stMember
- and its auxiliary index is indexNil or its auxiliary entry
- is a plain btNil or btVoid.
- Alpha cc -migrate enums are recognized by a zero index and
- a zero symbol value.
- DU 4.0 cc enums are recognized by a member type of btEnum without
- qualifiers and a zero symbol value. */
- (*swap_sym_in) (cur_bfd, ext_sym, &sh);
- if (sh.st != stMember)
- return;
-
- if (sh.index == indexNil
- || (sh.index == 0 && svalue == 0))
- break;
- (*debug_swap->swap_tir_in) (fh->fBigendian,
- &(debug_info->external_aux
- + fh->iauxBase + sh.index)->a_ti,
- &tir);
- if ((tir.bt != btNil
- && tir.bt != btVoid
- && (tir.bt != btEnum || svalue != 0))
- || tir.tq0 != tqNil)
- return;
- break;
-
- default:
- return;
- }
-
- for (;;)
- {
- char *name;
-
- (*swap_sym_in) (cur_bfd, ext_sym, &sh);
- if (sh.st != stMember)
- break;
- name = debug_info->ss + cur_fdr->issBase + sh.iss;
-
- /* Note that the value doesn't matter for enum constants
- in psymtabs, just in symtabs. */
- pst->add_psymbol (name, true,
- VAR_DOMAIN, LOC_CONST, -1,
- psymbol_placement::STATIC,
- unrelocated_addr (0),
- psymtab_language, partial_symtabs, objfile);
- ext_sym += external_sym_size;
- }
-}
-
-/* Ancillary function to psymtab_to_symtab(). Does all the work
- for turning the partial symtab PST into a symtab, recurring
- first on all dependent psymtabs. The argument FILENAME is
- only passed so we can see in debug stack traces what file
- is being read.
-
- This function has a split personality, based on whether the
- symbol table contains ordinary ecoff symbols, or stabs-in-ecoff.
- The flow of control and even the memory allocation differs. FIXME. */
-
-static void
-mdebug_expand_psymtab (legacy_psymtab *pst, struct objfile *objfile)
-{
- bfd_size_type external_sym_size;
- bfd_size_type external_pdr_size;
- void (*swap_sym_in) (bfd *, void *, SYMR *);
- void (*swap_pdr_in) (bfd *, void *, PDR *);
- int i;
- struct compunit_symtab *cust = NULL;
- FDR *fh;
- struct linetable *lines;
- CORE_ADDR lowest_pdr_addr = 0;
- gdb::array_view<const CORE_ADDR> section_offsets (objfile->section_offsets);
-
- if (pst->readin)
- return;
- pst->readin = true;
-
- /* Read in all partial symtabs on which this one is dependent.
- NOTE that we do have circular dependencies, sigh. We solved
- that by setting pst->readin before this point. */
- pst->expand_dependencies (objfile);
-
- /* Do nothing if this is a dummy psymtab. */
-
- if (pst->empty () && !pst->text_low_valid && !pst->text_high_valid)
- return;
-
- /* Now read the symbols for this symtab. */
-
- cur_bfd = CUR_BFD (pst);
- debug_swap = DEBUG_SWAP (pst);
- debug_info = DEBUG_INFO (pst);
- pending_list = PENDING_LIST (pst);
- external_sym_size = debug_swap->external_sym_size;
- external_pdr_size = debug_swap->external_pdr_size;
- swap_sym_in = debug_swap->swap_sym_in;
- swap_pdr_in = debug_swap->swap_pdr_in;
- mdebugread_objfile = objfile;
- cur_fd = FDR_IDX (pst);
- fh = ((cur_fd == -1)
- ? NULL
- : debug_info->fdr + cur_fd);
- cur_fdr = fh;
-
- /* See comment in parse_partial_symbols about the @stabs sentinel. */
- if (fh != NULL && fh->csym >= 2)
- {
- SYMR sh;
-
- (*swap_sym_in) (cur_bfd,
- ((char *) debug_info->external_sym
- + (fh->isymBase + 1) * external_sym_size),
- &sh);
- if (strcmp (debug_info->ss + fh->issBase + sh.iss,
- stabs_symbol) == 0)
- {
- /* This file contains stabs debuginfo, so we can't read it. */
- error ("GDB no longer supports stabs debug information.");
- }
- }
-
- /* This symbol table contains ordinary ecoff entries. */
-
- int maxlines, size;
- EXTR *ext_ptr;
-
- if (fh == 0)
- {
- maxlines = 0;
- cust = new_symtab ("unknown", 0, objfile);
- }
- else
- {
- maxlines = 2 * fh->cline;
- cust = new_symtab (pst->filename, maxlines, objfile);
-
- /* The proper language was already determined when building
- the psymtab, use it. */
- cust->primary_filetab ()->set_language
- (PST_PRIVATE (pst)->pst_language);
- }
-
- psymtab_language = cust->primary_filetab ()->language ();
-
- /* This code allocates the line table on the heap and then later
- copies it to the obstack. So, while casting away const here
- is ugly, it's not incorrect. */
- lines = const_cast<linetable *> (cust->primary_filetab ()->linetable ());
-
- /* Get a new lexical context. */
-
- push_parse_stack ();
- top_stack->cur_st = cust->primary_filetab ();
- top_stack->cur_block = cust->blockvector ()->static_block ();
- top_stack->cur_block->set_start (pst->text_low (objfile));
- top_stack->cur_block->set_end (0);
- top_stack->blocktype = stFile;
- top_stack->cur_type = 0;
- top_stack->procadr = 0;
- top_stack->numargs = 0;
- found_ecoff_debugging_info = 0;
-
- if (fh)
- {
- char *sym_ptr;
- char *sym_end;
-
- /* Parse local symbols first. */
- sym_ptr = ((char *) debug_info->external_sym
- + fh->isymBase * external_sym_size);
- sym_end = sym_ptr + fh->csym * external_sym_size;
- while (sym_ptr < sym_end)
- {
- SYMR sh;
- int c;
-
- (*swap_sym_in) (cur_bfd, sym_ptr, &sh);
- c = parse_symbol (&sh,
- debug_info->external_aux + fh->iauxBase,
- sym_ptr, fh->fBigendian,
- section_offsets, objfile);
- sym_ptr += c * external_sym_size;
- }
-
- /* Linenumbers. At the end, check if we can save memory.
- parse_lines has to look ahead an arbitrary number of PDR
- structures, so we swap them all first. */
- if (fh->cpd > 0)
- {
- char *pdr_ptr;
- char *pdr_end;
- PDR *pdr_in;
- PDR *pdr_in_end;
-
- gdb::def_vector<PDR> pr_block (fh->cpd);
-
- pdr_ptr = ((char *) debug_info->external_pdr
- + fh->ipdFirst * external_pdr_size);
- pdr_end = pdr_ptr + fh->cpd * external_pdr_size;
- pdr_in = pr_block.data ();
- for (;
- pdr_ptr < pdr_end;
- pdr_ptr += external_pdr_size, pdr_in++)
- {
- (*swap_pdr_in) (cur_bfd, pdr_ptr, pdr_in);
-
- /* Determine lowest PDR address, the PDRs are not always
- sorted. */
- if (pdr_in == pr_block.data ())
- lowest_pdr_addr = pdr_in->adr;
- else if (pdr_in->adr < lowest_pdr_addr)
- lowest_pdr_addr = pdr_in->adr;
- }
-
- parse_lines (fh, pr_block.data (), lines, maxlines,
- lowest_pdr_addr);
- if (lines->nitems < fh->cline)
- lines = shrink_linetable (lines);
-
- /* Fill in procedure info next. */
- pdr_in = pr_block.data ();
- pdr_in_end = pdr_in + fh->cpd;
- for (; pdr_in < pdr_in_end; pdr_in++)
- parse_procedure (pdr_in, NULL, pst);
- }
- }
-
- size = lines->nitems;
- if (size > 1)
- --size;
- cust->primary_filetab ()->set_linetable
- ((struct linetable *)
- obstack_copy (&mdebugread_objfile->objfile_obstack,
- lines, (sizeof (struct linetable)
- + size * sizeof (lines->item))));
- xfree (lines);
-
- /* .. and our share of externals.
- XXX use the global list to speed up things here. How?
- FIXME, Maybe quit once we have found the right number of ext's? */
- top_stack->cur_st = cust->primary_filetab ();
- top_stack->cur_block
- = top_stack->cur_st->compunit ()->blockvector ()->global_block ();
- top_stack->blocktype = stFile;
-
- ext_ptr = PST_PRIVATE (pst)->extern_tab;
- for (i = PST_PRIVATE (pst)->extern_count; --i >= 0; ext_ptr++)
- parse_external (ext_ptr, fh->fBigendian,
- section_offsets, objfile);
-
- /* If there are undefined symbols, tell the user.
- The alpha has an undefined symbol for every symbol that is
- from a shared library, so tell the user only if verbose is on. */
- if (info_verbose && n_undef_symbols)
- {
- gdb_printf (_("File %s contains %d unresolved references:"),
- symtab_to_filename_for_display
- (cust->primary_filetab ()),
- n_undef_symbols);
- gdb_printf ("\n\t%4d variables\n\t%4d "
- "procedures\n\t%4d labels\n",
- n_undef_vars, n_undef_procs, n_undef_labels);
- n_undef_symbols = n_undef_labels = n_undef_vars = n_undef_procs = 0;
-
- }
- pop_parse_stack ();
-
- sort_blocks (cust->primary_filetab ());
-
- /* Now link the psymtab and the symtab. */
- pst->compunit_symtab = cust;
-
- mdebugread_objfile = NULL;
-}
-\f
-/* Ancillary parsing procedures. */
-
-/* Return 1 if the symbol pointed to by SH has a cross reference
- to an opaque aggregate type, else 0. */
-
-static int
-has_opaque_xref (FDR *fh, SYMR *sh)
-{
- TIR tir;
- union aux_ext *ax;
- RNDXR rn[1];
- unsigned int rf;
-
- if (sh->index == indexNil)
- return 0;
-
- ax = debug_info->external_aux + fh->iauxBase + sh->index;
- (*debug_swap->swap_tir_in) (fh->fBigendian, &ax->a_ti, &tir);
- if (tir.bt != btStruct && tir.bt != btUnion && tir.bt != btEnum)
- return 0;
-
- ax++;
- (*debug_swap->swap_rndx_in) (fh->fBigendian, &ax->a_rndx, rn);
- if (rn->rfd == 0xfff)
- rf = AUX_GET_ISYM (fh->fBigendian, ax + 1);
- else
- rf = rn->rfd;
- if (rf != -1)
- return 0;
- return 1;
-}
-
-/* Lookup the type at relative index RN. Return it in TPP
- if found and in any event come up with its name PNAME.
- BIGEND says whether aux symbols are big-endian or not (from fh->fBigendian).
- Return value says how many aux symbols we ate. */
-
-static int
-cross_ref (int fd, union aux_ext *ax, struct type **tpp,
- enum type_code type_code,
- /* Use to alloc new type if none is found. */
- const char **pname, int bigend, const char *sym_name)
-{
- RNDXR rn[1];
- unsigned int rf;
- int result = 1;
- FDR *fh;
- char *esh;
- SYMR sh;
- int xref_fd;
- struct mdebug_pending *pend;
-
- *tpp = NULL;
-
- (*debug_swap->swap_rndx_in) (bigend, &ax->a_rndx, rn);
-
- /* Escape index means 'the next one'. */
- if (rn->rfd == 0xfff)
- {
- result++;
- rf = AUX_GET_ISYM (bigend, ax + 1);
- }
- else
- {
- rf = rn->rfd;
- }
-
- type_allocator alloc (mdebugread_objfile, get_current_subfile ()->language);
-
- /* mips cc uses a rf of -1 for opaque struct definitions.
- Set TYPE_STUB for these types so that check_typedef will
- resolve them if the struct gets defined in another compilation unit. */
- if (rf == -1)
- {
- *pname = "<undefined>";
- *tpp = alloc.new_type (type_code, 0, NULL);
- (*tpp)->set_is_stub (true);
- return result;
- }
-
- /* mips cc uses an escaped rn->index of 0 for struct return types
- of procedures that were compiled without -g. These will always remain
- undefined. */
- if (rn->rfd == 0xfff && rn->index == 0)
- {
- *pname = "<undefined>";
- return result;
- }
-
- /* Find the relative file descriptor and the symbol in it. */
- fh = get_rfd (fd, rf);
- xref_fd = fh - debug_info->fdr;
-
- if (rn->index >= fh->csym)
- {
- /* File indirect entry is corrupt. */
- *pname = "<illegal>";
- bad_rfd_entry_complaint (sym_name, xref_fd, rn->index);
- return result;
- }
-
- /* If we have processed this symbol then we left a forwarding
- pointer to the type in the pending list. If not, we`ll put
- it in a list of pending types, to be processed later when
- the file will be. In any event, we collect the name for the
- type here. */
-
- esh = ((char *) debug_info->external_sym
- + ((fh->isymBase + rn->index)
- * debug_swap->external_sym_size));
- (*debug_swap->swap_sym_in) (cur_bfd, esh, &sh);
-
- /* Make sure that this type of cross reference can be handled. */
- if ((sh.sc != scInfo
- || (sh.st != stBlock && sh.st != stTypedef && sh.st != stIndirect
- && sh.st != stStruct && sh.st != stUnion
- && sh.st != stEnum))
- && (sh.st != stBlock || !SC_IS_COMMON (sh.sc)))
- {
- /* File indirect entry is corrupt. */
- *pname = "<illegal>";
- bad_rfd_entry_complaint (sym_name, xref_fd, rn->index);
- return result;
- }
-
- *pname = debug_info->ss + fh->issBase + sh.iss;
-
- pend = is_pending_symbol (fh, esh);
- if (pend)
- *tpp = pend->t;
- else
- {
- /* We have not yet seen this type. */
-
- if ((sh.iss == 0 && sh.st == stTypedef) || sh.st == stIndirect)
- {
- TIR tir;
-
- /* alpha cc puts out a stTypedef with a sh.iss of zero for
- two cases:
- a) forward declarations of structs/unions/enums which are not
- defined in this compilation unit.
- For these the type will be void. This is a bad design decision
- as cross referencing across compilation units is impossible
- due to the missing name.
- b) forward declarations of structs/unions/enums/typedefs which
- are defined later in this file or in another file in the same
- compilation unit. Irix5 cc uses a stIndirect symbol for this.
- Simply cross reference those again to get the true type.
- The forward references are not entered in the pending list and
- in the symbol table. */
-
- (*debug_swap->swap_tir_in) (bigend,
- &(debug_info->external_aux
- + fh->iauxBase + sh.index)->a_ti,
- &tir);
- if (tir.tq0 != tqNil)
- complaint (_("illegal tq0 in forward typedef for %s"), sym_name);
- switch (tir.bt)
- {
- case btVoid:
- *tpp = alloc.new_type (type_code, 0, NULL);
- *pname = "<undefined>";
- break;
-
- case btStruct:
- case btUnion:
- case btEnum:
- cross_ref (xref_fd,
- (debug_info->external_aux
- + fh->iauxBase + sh.index + 1),
- tpp, type_code, pname,
- fh->fBigendian, sym_name);
- break;
-
- case btTypedef:
- /* Follow a forward typedef. This might recursively
- call cross_ref till we get a non typedef'ed type.
- FIXME: This is not correct behavior, but gdb currently
- cannot handle typedefs without type copying. Type
- copying is impossible as we might have mutual forward
- references between two files and the copied type would not
- get filled in when we later parse its definition. */
- *tpp = parse_type (xref_fd,
- debug_info->external_aux + fh->iauxBase,
- sh.index,
- NULL,
- fh->fBigendian,
- debug_info->ss + fh->issBase + sh.iss);
- add_pending (fh, esh, *tpp);
- break;
-
- default:
- complaint (_("illegal bt %d in forward typedef for %s"), tir.bt,
- sym_name);
- *tpp = alloc.new_type (type_code, 0, NULL);
- break;
- }
- return result;
- }
- else if (sh.st == stTypedef)
- {
- /* Parse the type for a normal typedef. This might recursively call
- cross_ref till we get a non typedef'ed type.
- FIXME: This is not correct behavior, but gdb currently
- cannot handle typedefs without type copying. But type copying is
- impossible as we might have mutual forward references between
- two files and the copied type would not get filled in when
- we later parse its definition. */
- *tpp = parse_type (xref_fd,
- debug_info->external_aux + fh->iauxBase,
- sh.index,
- NULL,
- fh->fBigendian,
- debug_info->ss + fh->issBase + sh.iss);
- }
- else
- {
- /* Cross reference to a struct/union/enum which is defined
- in another file in the same compilation unit but that file
- has not been parsed yet.
- Initialize the type only, it will be filled in when
- it's definition is parsed. */
- *tpp = alloc.new_type (type_code, 0, NULL);
- }
- add_pending (fh, esh, *tpp);
- }
-
- /* We used one auxent normally, two if we got a "next one" rf. */
- return result;
-}
-
-
-/* Quick&dirty lookup procedure, to avoid the MI ones that require
- keeping the symtab sorted. */
-
-static struct symbol *
-mylookup_symbol (const char *name, const struct block *block,
- domain_enum domain, location_class loc_class)
-{
- int inc;
-
- inc = name[0];
- for (struct symbol *sym : block_iterator_range (block))
- {
- if (sym->linkage_name ()[0] == inc
- && sym->domain () == domain
- && sym->loc_class () == loc_class
- && strcmp (sym->linkage_name (), name) == 0)
- return sym;
- }
-
- block = block->superblock ();
- if (block)
- return mylookup_symbol (name, block, domain, loc_class);
- return 0;
-}
-
-
-/* Add a new symbol S to a block B. */
-
-static void
-add_symbol (struct symbol *s, struct symtab *symtab, struct block *b)
-{
- s->set_symtab (symtab);
- mdict_add_symbol (b->multidict (), s);
-}
-
-/* Add a new linenumber entry (LINENO,ADR) to a linevector LT.
- MIPS' linenumber encoding might need more than one byte
- to describe it, LAST is used to detect these continuation lines.
-
- Combining lines with the same line number seems like a bad idea.
- E.g: There could be a line number entry with the same line number after the
- prologue and GDB should not ignore it (this is a better way to find
- a prologue than mips_skip_prologue).
- But due to the compressed line table format there are line number entries
- for the same line which are needed to bridge the gap to the next
- line number entry. These entries have a bogus address info with them
- and we are unable to tell them from intended duplicate line number
- entries.
- This is another reason why -ggdb debugging format is preferable. */
-
-static int
-add_line (struct linetable *lt, int lineno, CORE_ADDR adr, int last)
-{
- /* DEC c89 sometimes produces zero linenos which confuse gdb.
- Change them to something sensible. */
- if (lineno == 0)
- lineno = 1;
- if (last == 0)
- last = -2; /* Make sure we record first line. */
-
- if (last == lineno) /* Skip continuation lines. */
- return lineno;
-
- lt->item[lt->nitems].line = lineno;
- lt->item[lt->nitems++].set_unrelocated_pc (unrelocated_addr (adr << 2));
- return lineno;
-}
-\f
-/* Sorting and reordering procedures. */
-
-/* Sort the blocks of a symtab S.
- Reorder the blocks in the blockvector by code-address,
- as required by some MI search routines. */
-
-static void
-sort_blocks (struct symtab *s)
-{
- /* We have to cast away const here, but this is ok because we're
- constructing the blockvector in this code. */
- struct blockvector *bv
- = (struct blockvector *) s->compunit ()->blockvector ();
-
- if (bv->num_blocks () <= FIRST_LOCAL_BLOCK)
- {
- /* Cosmetic */
- if (bv->global_block ()->end () == 0)
- bv->global_block ()->set_start (0);
- if (bv->static_block ()->end () == 0)
- bv->static_block ()->set_start (0);
- return;
- }
- /*
- * This is very unfortunate: normally all functions are compiled in
- * the order they are found, but if the file is compiled -O3 things
- * are very different. It would be nice to find a reliable test
- * to detect -O3 images in advance.
- */
- if (bv->num_blocks () > FIRST_LOCAL_BLOCK + 1)
- {
- gdb::array_view<block *> blocks_view = bv->blocks ();
-
- std::stable_sort (blocks_view.begin () + FIRST_LOCAL_BLOCK,
- blocks_view.end (), blockvector::block_less_than);
- }
-
- {
- CORE_ADDR high = 0;
- int i, j = bv->num_blocks ();
-
- for (i = FIRST_LOCAL_BLOCK; i < j; i++)
- if (high < bv->block (i)->end ())
- high = bv->block (i)->end ();
- bv->global_block ()->set_end (high);
- }
-
- bv->global_block ()->set_start (bv->block (FIRST_LOCAL_BLOCK)->start ());
- bv->static_block ()->set_start (bv->global_block ()->start ());
- bv->static_block ()->set_end (bv->global_block ()->end ());
-}
-\f
-
-/* Constructor/restructor/destructor procedures. */
-
-/* Allocate a new symtab for NAME. Needs an estimate of how many
- linenumbers MAXLINES we'll put in it. */
-
-static struct compunit_symtab *
-new_symtab (const char *name, int maxlines, struct objfile *objfile)
-{
- auto cusymtab = std::make_unique<compunit_symtab> (objfile, name);
- struct symtab *symtab;
- std::unique_ptr<struct blockvector> bv;
- enum language lang;
-
- struct compunit_symtab *cust
- = add_compunit_symtab_to_objfile (std::move (cusymtab));
- symtab = allocate_symtab (cust, name);
-
- symtab->set_linetable (new_linetable (maxlines));
- lang = cust->language ();
-
- /* All symtabs must have at least two blocks. */
- bv = std::make_unique<struct blockvector> (2);
- bv->set_block (GLOBAL_BLOCK, new_block (objfile, NON_FUNCTION_BLOCK, lang));
- bv->set_block (STATIC_BLOCK, new_block (objfile, NON_FUNCTION_BLOCK, lang));
- bv->static_block ()->set_superblock (bv->global_block ());
- cust->set_blockvector (std::move(bv));
-
- cust->set_debugformat ("ECOFF");
- return cust;
-}
-
-/* Allocate a new partial_symtab NAME. */
-
-static legacy_psymtab *
-new_psymtab (const char *name, psymtab_storage *partial_symtabs,
- struct objfile *objfile)
-{
- legacy_psymtab *psymtab;
-
- psymtab = new legacy_psymtab (name, partial_symtabs, objfile->per_bfd);
-
- /* Keep a backpointer to the file's symbols. */
-
- psymtab->read_symtab_private
- = OBSTACK_ZALLOC (&objfile->objfile_obstack, md_symloc);
- CUR_BFD (psymtab) = cur_bfd;
- DEBUG_SWAP (psymtab) = debug_swap;
- DEBUG_INFO (psymtab) = debug_info;
- PENDING_LIST (psymtab) = pending_list;
-
- /* The way to turn this into a symtab is to call... */
- psymtab->legacy_read_symtab = mdebug_read_symtab;
- psymtab->legacy_expand_psymtab = mdebug_expand_psymtab;
- return (psymtab);
-}
-
-
-/* Allocate a linetable array of the given SIZE. Since the struct
- already includes one item, we subtract one when calculating the
- proper size to allocate. */
-
-static struct linetable *
-new_linetable (int size)
-{
- struct linetable *l;
-
- if (size > 1)
- --size;
- size = size * sizeof (l->item) + sizeof (struct linetable);
- l = (struct linetable *) xmalloc (size);
- l->nitems = 0;
- return l;
-}
-
-/* Oops, too big. Shrink it. This was important with the 2.4 linetables,
- I am not so sure about the 3.4 ones.
-
- Since the struct linetable already includes one item, we subtract one when
- calculating the proper size to allocate. */
-
-static struct linetable *
-shrink_linetable (struct linetable *lt)
-{
- return (struct linetable *) xrealloc ((void *) lt,
- (sizeof (struct linetable)
- + ((lt->nitems - 1)
- * sizeof (lt->item))));
-}
-
-/* Allocate and zero a new block of language LANGUAGE, and set its
- BLOCK_MULTIDICT. If function is non-zero, assume the block is
- associated to a function, and make sure that the symbols are stored
- linearly; otherwise, store them hashed. */
-
-static struct block *
-new_block (struct objfile *objfile, enum block_type type,
- enum language language)
-{
- struct block *retval = new (&objfile->objfile_obstack) block;
-
- if (type == FUNCTION_BLOCK)
- retval->set_multidict (mdict_create_linear_expandable (language));
- else
- retval->set_multidict (mdict_create_hashed_expandable (language));
-
- return retval;
-}
-
-/* Create a new symbol with printname NAME. */
-
-static struct symbol *
-new_symbol (const char *name)
-{
- struct symbol *s = new (&mdebugread_objfile->objfile_obstack) symbol;
-
- s->set_language (psymtab_language, &mdebugread_objfile->objfile_obstack);
- s->compute_and_set_names (name, true, mdebugread_objfile->per_bfd);
- return s;
-}
-
-/* Create a new type with printname NAME. */
-
-static struct type *
-new_type (char *name)
-{
- struct type *t;
-
- t = type_allocator (mdebugread_objfile,
- get_current_subfile ()->language).new_type ();
- t->set_name (name);
- INIT_CPLUS_SPECIFIC (t);
- return t;
-}
-\f
-/* Read ECOFF debugging information from a BFD section. This is
- called from elfread.c. It parses the section into a
- ecoff_debug_info struct, and then lets the rest of the file handle
- it as normal. */
-
-void
-elfmdebug_build_psymtabs (struct objfile *objfile,
- const struct ecoff_debug_swap *swap, asection *sec)
-{
- bfd *abfd = objfile->obfd.get ();
- struct ecoff_debug_info *info;
-
- /* FIXME: It's not clear whether we should be getting minimal symbol
- information from .mdebug in an ELF file, or whether we will.
- Re-initialize the minimal symbol reader in case we do. */
-
- minimal_symbol_reader reader (objfile);
-
- info = XOBNEW (&objfile->objfile_obstack, ecoff_debug_info);
-
- if (!(*swap->read_debug_info) (abfd, sec, info))
- error (_("Error reading ECOFF debugging information: %s"),
- bfd_errmsg (bfd_get_error ()));
-
- mdebug_build_psymtabs (reader, objfile, swap, info);
-
- reader.install ();
-}
-
-/* see mdebugread.h. */
-
-void
-mipsmdebug_build_psymtabs (struct objfile *objfile,
- const struct ecoff_debug_swap *swap,
- struct ecoff_debug_info *info)
-{
- bfd *abfd = objfile->obfd.get ();
-
- minimal_symbol_reader reader (objfile);
-
- if (!(*swap->read_debug_info) (abfd, nullptr,
- info))
- error (_("Error reading ECOFF debugging information: %s"),
- bfd_errmsg (bfd_get_error ()));
-
- mdebug_build_psymtabs (reader, objfile, swap, info);
-
- reader.install ();
-}
-
-INIT_GDB_FILE (mdebugread)
-{
- mdebug_register_index
- = register_symbol_register_impl (LOC_REGISTER, &mdebug_register_funcs);
- mdebug_regparm_index
- = register_symbol_register_impl (LOC_REGPARM_ADDR, &mdebug_register_funcs);
-}
projects / thirdparty / binutils-gdb.git / commitdiff
