/* Read a symbol table in MIPS' format (Third-Eye).
- Copyright 1986, 1987, 1989, 1990, 1991 Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994
+ Free Software Foundation, Inc.
+ by Per Bothner, John Gilmore and Ian Lance Taylor at Cygnus Support.
This file is part of GDB.
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-/* This module provides three functions: mipscoff_symfile_init,
- which initializes to read a symbol file; mipscoff_new_init, which
- discards existing cached information when all symbols are being
- discarded; and mipscoff_symfile_read, which reads a symbol table
- from a file.
-
- mipscoff_symfile_read only does the minimum work necessary for letting the
- user "name" things symbolically; it does not read the entire symtab.
- Instead, it reads the external and static symbols and puts them in partial
- symbol tables. When more extensive information is requested of a
- file, the corresponding partial symbol table is mutated into a full
- fledged symbol table by going back and reading the symbols
- for real. mipscoff_psymtab_to_symtab() is called indirectly through
- a pointer in the psymtab to do this. */
-
-#include <stdio.h>
+/* Read symbols from an ECOFF file. Most of the work is done in
+ mdebugread.c. */
+
#include "defs.h"
+#include <string.h>
+#include "bfd.h"
#include "symtab.h"
-#include "gdbcore.h"
#include "symfile.h"
-#include "obstack.h"
+#include "objfiles.h"
#include "buildsym.h"
-#include <sys/param.h>
-#include <sys/file.h>
-#include <sys/stat.h>
-#ifdef CMUCS
-#include <mips/syms.h>
-#else /* not CMUCS */
-#include <symconst.h>
-#include <sym.h>
-#endif /* not CMUCS */
-
-#include "coff/mips.h"
-#include "libaout.h" /* FIXME Secret internal BFD stuff for a.out */
-#include "aout/aout64.h"
-#include "aout/stab_gnu.h" /* We always use GNU stabs, not native, now */
-
-struct coff_exec {
- struct external_filehdr f;
- struct external_aouthdr a;
-};
-
-/* These must match the corresponding definition in gcc/config/xm-mips.h.
- At some point, these should probably go into a shared include file,
- but currently gcc and gdb do not share any directories. */
-
-#define CODE_MASK 0x8F300
-#define MIPS_IS_STAB(sym) (((sym)->index & 0xFFF00) == CODE_MASK)
-#define MIPS_MARK_STAB(code) ((code)+CODE_MASK)
-#define MIPS_UNMARK_STAB(code) ((code)-CODE_MASK)
-#define STABS_SYMBOL "@stabs"
-
-/* Each partial symbol table entry contains a pointer to private data for the
- read_symtab() function to use when expanding a partial symbol table entry
- to a full symbol table entry.
-
- For mipsread this structure contains the index of the FDR that this psymtab
- represents and a pointer to the symbol table header HDRR from the symbol
- file that the psymtab was created from. */
-
-#define PST_PRIVATE(p) ((struct symloc *)(p)->read_symtab_private)
-#define FDR_IDX(p) (PST_PRIVATE(p)->fdr_idx)
-#define CUR_HDR(p) (PST_PRIVATE(p)->cur_hdr)
-
-struct symloc {
- int fdr_idx;
- HDRR *cur_hdr;
- EXTR **extern_tab; /* Pointer to external symbols for this file. */
- int extern_count; /* Size of extern_tab. */
-};
-
-/* Things we import explicitly from other modules */
-
-extern int info_verbose;
-extern struct block *block_for_pc();
-extern void sort_symtab_syms();
-
-/* Various complaints about symbol reading that don't abort the process */
-
-struct complaint unknown_ext_complaint =
- {"unknown external symbol %s", 0, 0};
-
-struct complaint unknown_sym_complaint =
- {"unknown local symbol %s", 0, 0};
-
-struct complaint unknown_st_complaint =
- {"with type %d", 0, 0};
-
-struct complaint block_overflow_complaint =
- {"block containing %s overfilled", 0, 0};
-
-struct complaint basic_type_complaint =
- {"cannot map MIPS basic type 0x%x", 0, 0};
-
-struct complaint unknown_type_qual_complaint =
- {"unknown type qualifier 0x%x", 0, 0};
-
-struct complaint array_bitsize_complaint =
- {"size of array target type not known, assuming %d bits", 0, 0};
-
-struct complaint array_parse_complaint =
- {"array type with strange relative symbol", 0, 0};
-
-struct complaint bad_tag_guess_complaint =
- {"guessed tag type incorrectly", 0, 0};
-
-/* Macros and extra defs */
-
-/* Already-parsed symbols are marked specially */
-
-#define stParsed stType
-
-/* 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)))
-
-/* When looking at .o files, avoid tripping over bad addresses */
-
-#define SAFE_TEXT_ADDR 0x400000
-#define SAFE_DATA_ADDR 0x10000000
-
-#define UNSAFE_DATA_ADDR(p) ((unsigned)p < SAFE_DATA_ADDR || (unsigned)p > 2*SAFE_DATA_ADDR)
-\f
-/* Things that really are local to this module */
-
-/* GDB symtable for the current compilation unit */
+#include "stabsread.h"
+#include "gdb-stabs.h"
-static struct symtab *cur_stab;
+#include "coff/sym.h"
+#include "coff/internal.h"
+#include "coff/ecoff.h"
+#include "libcoff.h" /* Private BFD COFF information. */
+#include "libecoff.h" /* Private BFD ECOFF information. */
+#include "elf/common.h"
+#include "elf/mips.h"
-/* MIPS symtab header for the current file */
-
-static HDRR *cur_hdr;
-
-/* Pointer to current file decriptor 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 max_gdbinfo;
-static 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;
-
-/* Extra builtin types */
-
-struct type *builtin_type_complex;
-struct type *builtin_type_double_complex;
-struct type *builtin_type_fixed_dec;
-struct type *builtin_type_float_dec;
-struct type *builtin_type_string;
-
-/* Forward declarations */
-
-static struct symbol *new_symbol();
-static struct type *new_type();
-static struct block *new_block();
-static struct symtab *new_symtab();
-static struct linetable *new_linetable();
-static struct blockvector *new_bvect();
-
-static struct type *parse_type();
-static struct type *make_type();
-static struct symbol *mylookup_symbol();
-static struct block *shrink_block();
-static void sort_blocks();
-
-static int compare_symtabs();
-static int compare_psymtabs();
-static int compare_blocks();
-
-static struct partial_symtab *new_psymtab();
-static struct partial_symtab *parse_fdr();
-static int compare_psymbols();
+static void
+mipscoff_new_init PARAMS ((struct objfile *));
-static void psymtab_to_symtab_1();
-static void add_block();
-static void add_symbol();
-static int add_line();
-static struct linetable *shrink_linetable();
-static char* mips_next_symbol_text ();
+static void
+mipscoff_symfile_init PARAMS ((struct objfile *));
-\f
-/* Things we export to other modules */
+static void
+mipscoff_symfile_read PARAMS ((struct objfile *, struct section_offsets *,
+ int));
-/* Address bounds for the signal trampoline in inferior, if any */
-/* FIXME: Nothing really seems to use this. Why is it here? */
+static void
+mipscoff_symfile_finish PARAMS ((struct objfile *));
-CORE_ADDR sigtramp_address, sigtramp_end;
+static struct section_offsets *
+mipscoff_symfile_offsets PARAMS ((struct objfile *, CORE_ADDR));
-/* The entry point (starting address) of the file, if it is an executable. */
+static void
+read_alphacoff_dynamic_symtab PARAMS ((struct section_offsets *,
+ struct objfile *objfile));
-extern CORE_ADDR startup_file_start; /* From blockframe.c */
-extern CORE_ADDR startup_file_end; /* From blockframe.c */
+/* Initialize anything that needs initializing when a completely new
+ symbol file is specified (not just adding some symbols from another
+ file, e.g. a shared library). */
-void
-mipscoff_new_init()
-{
- /* If we have a file symbol header lying around, blow it away. */
- if (cur_hdr)
- free ((char *)cur_hdr);
- cur_hdr = 0;
-}
+extern CORE_ADDR sigtramp_address;
-void
-mipscoff_symfile_init (sf)
- struct sym_fns *sf;
+static void
+mipscoff_new_init (ignore)
+ struct objfile *ignore;
{
- sf->sym_private = NULL;
+ sigtramp_address = 0;
+ stabsread_new_init ();
+ buildsym_new_init ();
}
-void
-mipscoff_symfile_read(sf, addr, mainline)
- struct sym_fns *sf;
- CORE_ADDR addr;
- int mainline;
-{
- struct coff_symfile_info *info = (struct coff_symfile_info *)sf->sym_private;
- bfd *abfd = sf->objfile->obfd;
- char *name = bfd_get_filename (abfd);
- int desc;
- register int val;
- int symtab_offset;
- int stringtab_offset;
-
-/* WARNING WILL ROBINSON! ACCESSING BFD-PRIVATE DATA HERE! FIXME! */
- desc = fileno ((FILE *)(abfd->iostream)); /* Raw file descriptor */
-/* End of warning */
-
- /* Position to read the symbol table. */
- val = lseek (desc, (long)symtab_offset, 0);
- if (val < 0)
- perror_with_name (name);
-
- init_misc_bunches ();
- make_cleanup (discard_misc_bunches, 0);
-
- /* Now that the executable file is positioned at symbol table,
- process it and define symbols accordingly. */
-
- read_mips_symtab(sf->objfile, desc);
+/* Initialize to read a symbol file (nothing to do). */
- /* Go over the misc symbol bunches and install them in vector. */
-
- condense_misc_bunches (!mainline);
-}
-
-/* Exported procedure: Allocate zeroed memory */
-
-char *
-xzalloc(size)
+static void
+mipscoff_symfile_init (objfile)
+ struct objfile *objfile;
{
- char *p = xmalloc(size);
-
- memset(p, 0, size);
- return p;
}
-/* Exported procedure: Builds a symtab from the PST partial one.
- Restores the environment in effect when PST was created, delegates
- most of the work to an ancillary procedure, and sorts
- and reorders the symtab list at the end */
+/* Read a symbol file from a file. */
static void
-mipscoff_psymtab_to_symtab(pst)
- struct partial_symtab *pst;
+mipscoff_symfile_read (objfile, section_offsets, mainline)
+ struct objfile *objfile;
+ struct section_offsets *section_offsets;
+ int mainline;
{
- struct symtab *ret;
- int i;
-
- if (!pst)
- return;
-
- if (info_verbose) {
- printf_filtered("Reading in symbols for %s...", pst->filename);
- fflush(stdout);
- }
- /* Restore the header and list of pending typedefs */
- cur_hdr = CUR_HDR(pst);
-
- next_symbol_text_func = mips_next_symbol_text;
+ bfd *abfd = objfile->obfd;
+ struct cleanup * back_to;
- psymtab_to_symtab_1(pst, pst->filename);
+ init_minimal_symbol_collection ();
+ back_to = make_cleanup (discard_minimal_symbols, 0);
- /* Match with global symbols. This only needs to be done once,
- after all of the symtabs and dependencies have been read in. */
- scan_file_globals ();
-
- if (info_verbose)
- printf_filtered("done.\n");
-}
-
-/* Exported procedure: Is PC in the signal trampoline code */
-
-int
-in_sigtramp(pc, name)
- CORE_ADDR pc;
- char *name;
-{
- if (sigtramp_address == 0)
- fixup_sigtramp();
- return (pc >= sigtramp_address && pc < sigtramp_end);
-}
-\f
-/* File-level interface functions */
-
-/* Read the symtab information from file FSYM into memory. Also,
- return address just past end of our text segment in *END_OF_TEXT_SEGP. */
+ /* Now that the executable file is positioned at symbol table,
+ process it and define symbols accordingly. */
-static
-read_the_mips_symtab(abfd, fsym, end_of_text_segp)
- bfd *abfd;
- int fsym;
- CORE_ADDR *end_of_text_segp;
-{
- int stsize, st_hdrsize;
- unsigned st_filptr;
- HDRR st_hdr;
- /* Header for executable/object file we read symbols from */
- struct coff_exec filhdr;
-
- /* We get here with DESC pointing to the symtab header. But we need
- * other info from the initial headers */
- lseek(fsym, 0L, 0);
- myread(fsym, &filhdr, sizeof filhdr);
-
- if (end_of_text_segp)
- *end_of_text_segp =
- bfd_h_get_32 (abfd, filhdr.a.text_start) +
- bfd_h_get_32 (abfd, filhdr.a.tsize);
-
- /* Find and read the symbol table header */
- st_hdrsize = bfd_h_get_32 (abfd, filhdr.f.f_nsyms);
- st_filptr = bfd_h_get_32 (abfd, filhdr.f.f_symptr);
- if (st_filptr == 0)
- return 0;
-
- lseek(fsym, st_filptr, L_SET);
- if (st_hdrsize > sizeof (st_hdr)) /* Profanity check */
- abort();
- if (read(fsym, &st_hdr, st_hdrsize) != st_hdrsize)
- goto readerr;
-
- /* Find out how large the symbol table is */
- stsize = (st_hdr.cbExtOffset - (st_filptr + st_hdrsize))
- + st_hdr.iextMax * cbEXTR;
-
- /* Allocate space for the symbol table. Read it in. */
- cur_hdr = (HDRR *) xmalloc(stsize + st_hdrsize);
-
- memcpy(cur_hdr, &st_hdr, st_hdrsize);
- if (read(fsym, (char *) cur_hdr + st_hdrsize, stsize) != stsize)
- goto readerr;
-
- /* Fixup file_pointers in it */
- fixup_symtab(cur_hdr, (char *) cur_hdr + st_hdrsize,
- st_filptr + st_hdrsize);
-
- return;
-readerr:
- error("Short read on %s", bfd_get_filename (abfd));
-}
+ if (ecoff_slurp_symbolic_info (abfd) == false)
+ error ("Error reading symbol table: %s", bfd_errmsg (bfd_get_error ()));
+ mdebug_build_psymtabs (objfile, &ecoff_backend (abfd)->debug_swap,
+ &ecoff_data (abfd)->debug_info, section_offsets);
-/* Turn all file-relative pointers in the symtab described by HDR
- into memory pointers, given that the symtab itself is located
- at DATA in memory and F_PTR in the file. */
+ /* Add the dynamic symbols if we are reading the main symbol table. */
-static
-fixup_symtab( hdr, data, f_ptr)
- HDRR *hdr;
- char *data;
-{
- int f_idx, s_idx;
- FDR *fh;
- SYMR *sh;
- OPTR *op;
- PDR *pr;
- EXTR *esh;
-
- /*
- * These fields are useless (and empty) by now:
- * hdr->cbDnOffset, hdr->cbOptOffset
- * We use them for other internal purposes.
- */
- hdr->cbDnOffset = 0;
- hdr->cbOptOffset = 0;
-
-#define FIX(off) \
- if (hdr->off) hdr->off = (unsigned int)data + (hdr->off - f_ptr);
-
- FIX(cbLineOffset);
- FIX(cbPdOffset);
- FIX(cbSymOffset);
- FIX(cbOptOffset);
- FIX(cbAuxOffset);
- FIX(cbSsOffset);
- FIX(cbSsExtOffset);
- FIX(cbFdOffset);
- FIX(cbRfdOffset);
- FIX(cbExtOffset);
-#undef FIX
-
-
- /*
- * Fix all string pointers inside the symtab, and
- * the FDR records. Also fix other miscellany.
- */
- for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) {
- register unsigned code_offset;
-
- /* Header itself, and strings */
- fh = (FDR *) (hdr->cbFdOffset) + f_idx;
- fh->issBase += hdr->cbSsOffset;
- if (fh->rss != -1)
- fh->rss = (long)fh->rss + fh->issBase;
-
- /* Local symbols */
- fh->isymBase = (int)((SYMR*)(hdr->cbSymOffset)+fh->isymBase);
-
- /* FIXME! Probably don't want to do this here! */
- for (s_idx = 0; s_idx < fh->csym; s_idx++) {
- sh = (SYMR*)fh->isymBase + s_idx;
- sh->iss = (long) sh->iss + fh->issBase;
- sh->reserved = 0;
- }
-
- cur_fd = f_idx;
-
- /* cannot fix fh->ipdFirst because it is a short */
-#define IPDFIRST(h,fh) \
- ((long)h->cbPdOffset + fh->ipdFirst * sizeof(PDR))
-
- /* Optional symbols (actually used for partial_symtabs) */
- fh->ioptBase = 0;
- fh->copt = 0;
-
- /* Aux symbols */
- if (fh->caux)
- fh->iauxBase = hdr->cbAuxOffset + fh->iauxBase * sizeof(AUXU);
- /* Relative file descriptor table */
- fh->rfdBase = hdr->cbRfdOffset + fh->rfdBase * sizeof(RFDT);
-
- /* Line numbers */
- if (fh->cbLine)
- fh->cbLineOffset += hdr->cbLineOffset;
-
- /* Procedure symbols. (XXX This should be done later) */
- code_offset = fh->adr;
- for (s_idx = 0; s_idx < fh->cpd; s_idx++) {
- unsigned name, only_ext;
-
- pr = (PDR*)(IPDFIRST(hdr,fh)) + s_idx;
-
- /* Simple rule to find files linked "-x" */
- only_ext = fh->rss == -1;
- if (only_ext) {
- if (pr->isym == -1) {
- /* static function */
- sh = (SYMR*)-1;
- } else {
- /* external */
- name = hdr->cbExtOffset + pr->isym * sizeof(EXTR);
- sh = &((EXTR*)name)->asym;
- }
- } else {
- /* Full symbols */
- sh = (SYMR*)fh->isymBase + pr->isym;
- /* Included code ? */
- if (s_idx == 0 && pr->adr != 0)
- code_offset -= pr->adr;
- }
-
- /* Turn index into a pointer */
- pr->isym = (long)sh;
-
- /* Fix line numbers */
- pr->cbLineOffset += fh->cbLineOffset;
-
- /* Relocate address */
- if (!only_ext)
- pr->adr += code_offset;
- }
- }
+ if (mainline)
+ read_alphacoff_dynamic_symtab (section_offsets, objfile);
- /* External symbols: fix string */
- for (s_idx = 0; s_idx < hdr->iextMax; s_idx++) {
- esh = (EXTR*)(hdr->cbExtOffset) + s_idx;
- esh->asym.iss = esh->asym.iss + hdr->cbSsExtOffset;
- }
-}
+ if (!have_partial_symbols ())
+ {
+ wrap_here ("");
+ printf_filtered ("(no debugging symbols found)...");
+ wrap_here ("");
+ }
+ /* Install any minimal symbols that have been collected as the current
+ minimal symbols for this objfile. */
-/* Find a file descriptor given its index RF relative to a file CF */
+ install_minimal_symbols (objfile);
-static FDR *
-get_rfd (cf, rf)
- int cf, rf;
-{
- register FDR *f;
-
- f = (FDR *) (cur_hdr->cbFdOffset) + cf;
- /* Object files do not have the RFD table, all refs are absolute */
- if (f->rfdBase == 0)
- return (FDR *) (cur_hdr->cbFdOffset) + rf;
- cf = *((pRFDT) f->rfdBase + rf);
- return (FDR *) (cur_hdr->cbFdOffset) + cf;
+ do_cleanups (back_to);
}
-/* Return a safer print NAME for a file descriptor */
+/* Perform any local cleanups required when we are done with a
+ particular objfile. */
-static char *
-fdr_name(name)
- char *name;
+static void
+mipscoff_symfile_finish (objfile)
+ struct objfile *objfile;
{
- if (name == (char *) -1)
- return "<stripped file>";
- if (UNSAFE_DATA_ADDR(name))
- return "<NFY>";
- return name;
}
+/* Fake up identical offsets for all sections. */
-/* Read in and parse the symtab of the file DESC. INCREMENTAL says
- whether we are adding to the general symtab or not.
- FIXME: INCREMENTAL is currently always zero, though it should not be. */
-
-static
-read_mips_symtab (objfile, desc)
- struct objfile *objfile;
- int desc;
+static struct section_offsets *
+mipscoff_symfile_offsets (objfile, addr)
+ struct objfile *objfile;
+ CORE_ADDR addr;
{
- CORE_ADDR end_of_text_seg;
-
- read_the_mips_symtab(objfile->obfd, desc, &end_of_text_seg);
-
- parse_partial_symbols(end_of_text_seg, 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)
- printf (
-"\n%s not compiled with -g, debugging support is limited.\n",
- objfile->name);
- printf(
-"You should compile with -g2 or -g3 for best debugging support.\n");
- fflush(stdout);
- }
-#endif
-}
-\f
-/* Local utilities */
-
-/* Map of FDR indexes to partial symtabs */
-
-struct pst_map {
- struct partial_symtab *pst; /* the psymtab proper */
- int n_globals; /* exported globals (external symbols) */
- int globals_offset; /* cumulative */
+ struct section_offsets *section_offsets;
+ int i;
+
+ objfile->num_sections = SECT_OFF_MAX;
+ section_offsets = ((struct section_offsets *)
+ obstack_alloc (&objfile->psymbol_obstack,
+ (sizeof (struct section_offsets)
+ + (sizeof (section_offsets->offsets)
+ * (SECT_OFF_MAX - 1)))));
+
+ for (i = 0; i < SECT_OFF_MAX; i++)
+ ANOFFSET (section_offsets, i) = addr;
+
+ return section_offsets;
+}
+
+/* Alpha OSF/1 encapsulates the dynamic symbols in ELF format in a
+ standard coff section. The ELF format for the symbols differs from
+ the format defined in elf/external.h. It seems that a normal ELF 32 bit
+ format is used, and the representation only changes because longs are
+ 64 bit on the alpha. In addition, the handling of text/data section
+ indices for symbols is different from the ELF ABI.
+ As the BFD linker currently does not support dynamic linking on the alpha,
+ there seems to be no reason to pollute BFD with another mixture of object
+ file formats for now. */
+
+/* Format of an alpha external ELF symbol. */
+
+typedef struct {
+ unsigned char st_name[4]; /* Symbol name, index in string tbl */
+ unsigned char st_pad[4]; /* Pad to long word boundary */
+ unsigned char st_value[8]; /* Value of the symbol */
+ unsigned char st_size[4]; /* Associated symbol size */
+ unsigned char st_info[1]; /* Type and binding attributes */
+ unsigned char st_other[1]; /* No defined meaning, 0 */
+ unsigned char st_shndx[2]; /* Associated section index */
+} Elfalpha_External_Sym;
+
+/* Format of an alpha external ELF dynamic info structure. */
+
+typedef struct {
+ unsigned char d_tag[4]; /* Tag */
+ unsigned char d_pad[4]; /* Pad to long word boundary */
+ union {
+ unsigned char d_ptr[8]; /* Pointer value */
+ unsigned char d_val[4]; /* Integer value */
+ } d_un;
+} Elfalpha_External_Dyn;
+
+/* Struct to obtain the section pointers for alpha dynamic symbol info. */
+
+struct alphacoff_dynsecinfo {
+ asection *sym_sect; /* Section pointer for .dynsym section */
+ asection *str_sect; /* Section pointer for .dynstr section */
+ asection *dyninfo_sect; /* Section pointer for .dynamic section */
+ asection *got_sect; /* Section pointer for .got section */
};
+static void
+alphacoff_locate_sections PARAMS ((bfd *, asection *, void *));
-/* 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. */
- int blocktype; /* What are we parsing. */
- int maxsyms; /* Max symbols in this block. */
- struct type *cur_type; /* Type we parse fields for. */
- int cur_field; /* Field number in cur_type. */
- int procadr; /* Start addres of this procedure */
- int numargs; /* Its argument count */
-} *top_stack; /* Top stack ptr */
-
-
-/* Enter a new lexical context */
-
-static push_parse_stack()
-{
- struct parse_stack *new;
-
- /* Reuse frames if possible */
- if (top_stack && top_stack->prev)
- new = top_stack->prev;
- else
- new = (struct parse_stack *) xzalloc(sizeof(struct parse_stack));
- /* Initialize new frame with previous content */
- if (top_stack) {
- register struct parse_stack *prev = new->prev;
-
- *new = *top_stack;
- top_stack->prev = new;
- new->prev = prev;
- new->next = top_stack;
- }
- top_stack = new;
-}
-
-/* Exit a lexical context */
-
-static pop_parse_stack()
-{
- 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 */
-
-static struct mips_pending {
- struct mips_pending *next; /* link */
- SYMR *s; /* the symbol */
- struct type *t; /* its partial type descriptor */
-} **pending_list;
-
-
-/* Check whether we already saw symbol SH in file FH as undefined */
-
-static
-struct mips_pending *is_pending_symbol(fh, sh)
- FDR *fh;
- SYMR *sh;
-{
- int f_idx = fh - (FDR *) cur_hdr->cbFdOffset;
- register struct mips_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;
-}
-
-/* Check whether we already saw type T in file FH as undefined */
-
-static
-struct mips_pending *is_pending_type(fh, t)
- FDR *fh;
- struct type *t;
-{
- int f_idx = fh - (FDR *) cur_hdr->cbFdOffset;
- register struct mips_pending *p;
-
- for (p = pending_list[f_idx]; p; p = p->next)
- if (p->t == t)
- break;
- return p;
-}
-
-/* Add a new undef symbol SH of type T */
-
-static
-add_pending(fh, sh, t)
- FDR *fh;
- SYMR *sh;
- struct type *t;
-{
- int f_idx = fh - (FDR *) cur_hdr->cbFdOffset;
- struct mips_pending *p = is_pending_symbol(fh, sh);
-
- /* Make sure we do not make duplicates */
- if (!p) {
- p = (struct mips_pending *) xmalloc(sizeof(*p));
- p->s = sh;
- p->t = t;
- p->next = pending_list[f_idx];
- pending_list[f_idx] = p;
- }
- sh->reserved = 1; /* for quick check */
-}
-
-/* Throw away undef entries when done with file index F_IDX */
-
-static
-free_pending(f_idx)
-{
- register struct mips_pending *p, *q;
-
- for (p = pending_list[f_idx]; p; p = q) {
- q = p->next;
- free(p);
- }
- pending_list[f_idx] = 0;
-}
-
-/* The number of args to a procedure is not explicit in the symtab,
- this is the list of all those we know of.
- This makes parsing more reasonable and avoids extra passes */
-
-static struct numarg {
- struct numarg *next; /* link */
- unsigned adr; /* procedure's start address */
- unsigned num; /* arg count */
-} *numargs_list;
-
-/* Record that the procedure at ADR takes NUM arguments. */
-
-static
-got_numargs(adr,num)
-{
- struct numarg *n = (struct numarg *) xmalloc(sizeof(struct numarg));
-
- n->adr = adr;
- n->num = num;
- n->next = numargs_list;
- numargs_list = n;
-}
-
-/* See if we know how many arguments the procedure at ADR takes */
-
-static
-lookup_numargs(adr)
-{
- struct numarg *n = numargs_list;
-
- while (n && n->adr != adr)
- n = n->next;
- return (n) ? n->num : -1;
-}
-
-/* Release storage when done with this file */
+/* We are called once per section from read_alphacoff_dynamic_symtab.
+ We need to examine each section we are passed, check to see
+ if it is something we are interested in processing, and
+ if so, stash away some access information for the section. */
static void
-free_numargs()
+alphacoff_locate_sections (ignore_abfd, sectp, sip)
+ bfd *ignore_abfd;
+ asection *sectp;
+ PTR sip;
{
- struct numarg *n = numargs_list, *m;
+ register struct alphacoff_dynsecinfo *si;
- while (n) {
- m = n->next;
- free(n);
- n = m;
- }
- numargs_list = 0;
-}
+ si = (struct alphacoff_dynsecinfo *) sip;
-char*
-prepend_tag_kind(tag_name, type_code)
- char *tag_name;
- int type_code;
-{
- char *prefix;
- char *result;
- switch (type_code) {
- case TYPE_CODE_ENUM:
- prefix = "enum ";
- break;
- case TYPE_CODE_STRUCT:
- prefix = "struct ";
- break;
- case TYPE_CODE_UNION:
- prefix = "union ";
- break;
- default:
- prefix = "";
+ if (STREQ (sectp->name, ".dynsym"))
+ {
+ si->sym_sect = sectp;
}
-
- result = (char*)obstack_alloc (symbol_obstack,
- strlen(prefix) + strlen(tag_name) + 1);
- sprintf(result, "%s%s", prefix, tag_name);
- return result;
-}
-
-\f
-/* Parsing Routines proper. */
-
-/* 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.
- Return count of SYMR's handled (normally one). */
-
-static int
-parse_symbol(sh, ax)
- SYMR *sh;
- AUXU *ax;
-{
- char *name;
- struct symbol *s;
- struct block *b;
- struct type *t;
- struct field *f;
- int count = 1;
- /* When a symbol is cross-referenced from other files/symbols
- we mark it explicitly */
- int pend = (sh->reserved == 1);
- enum address_class class;
-
- switch (sh->st) {
-
- case stNil:
- break;
-
- case stGlobal: /* external symbol, goes into global block */
- class = LOC_STATIC;
- b = BLOCKVECTOR_BLOCK(BLOCKVECTOR(top_stack->cur_st),
- GLOBAL_BLOCK);
- s = new_symbol(sh->iss);
- SYMBOL_VALUE_ADDRESS(s) = (CORE_ADDR)sh->value;
- goto data;
-
- case stStatic: /* static data, goes into current block. */
- class = LOC_STATIC;
- b = top_stack->cur_block;
- s = new_symbol(sh->iss);
- SYMBOL_VALUE_ADDRESS(s) = (CORE_ADDR)sh->value;
- goto data;
-
- case stLocal: /* local variable, goes into current block */
- if (sh->sc == scRegister) {
- class = LOC_REGISTER;
- if (sh->value > 31)
- sh->value += FP0_REGNUM-32;
- } else
- class = LOC_LOCAL;
- b = top_stack->cur_block;
- s = new_symbol(sh->iss);
- SYMBOL_VALUE(s) = sh->value;
-
-data: /* Common code for symbols describing data */
- SYMBOL_NAMESPACE(s) = VAR_NAMESPACE;
- SYMBOL_CLASS(s) = class;
- add_symbol(s, b);
-
- /* Type could be missing in a number of cases */
- if (sh->sc == scUndefined || sh->sc == scNil ||
- sh->index == 0xfffff)
- SYMBOL_TYPE(s) = builtin_type_int; /* undefined? */
- else
- SYMBOL_TYPE(s) = parse_type(ax + sh->index, sh, 0);
- /* Value of a data symbol is its memory address */
- break;
-
- case stParam: /* arg to procedure, goes into current block */
- max_gdbinfo++;
- top_stack->numargs++;
-
- name = (char*)sh->iss;
- /* Special GNU C++ name. */
- if (name[0] == CPLUS_MARKER && name[1] == 't' && name[2] == 0)
- name = "this";
- s = new_symbol(name);
-
- SYMBOL_NAMESPACE(s) = VAR_NAMESPACE;
- if (sh->sc == scRegister) {
- SYMBOL_CLASS(s) = LOC_REGPARM;
- if (sh->value > 31)
- sh->value += FP0_REGNUM-32;
- } else
- SYMBOL_CLASS(s) = LOC_ARG;
- SYMBOL_VALUE(s) = sh->value;
- SYMBOL_TYPE(s) = parse_type(ax + sh->index, sh, 0);
- add_symbol(s, top_stack->cur_block);
-#if 0
- /* FIXME: This has not been tested. See dbxread.c */
- /* Add the type of this parameter to the function/procedure
- type of this block. */
- add_param_to_type(&top_stack->cur_block->function->type,s);
-#endif
- break;
-
- case stLabel: /* label, goes into current block */
- s = new_symbol(sh->iss);
- SYMBOL_NAMESPACE(s) = VAR_NAMESPACE; /* so that it can be used */
- SYMBOL_CLASS(s) = LOC_LABEL; /* but not misused */
- SYMBOL_VALUE_ADDRESS(s) = (CORE_ADDR)sh->value;
- SYMBOL_TYPE(s) = builtin_type_int;
- add_symbol(s, top_stack->cur_block);
- break;
-
- case stProc: /* Procedure, usually goes into global block */
- case stStaticProc: /* Static procedure, goes into current block */
- s = new_symbol(sh->iss);
- SYMBOL_NAMESPACE(s) = VAR_NAMESPACE;
- SYMBOL_CLASS(s) = LOC_BLOCK;
- /* Type of the return value */
- if (sh->sc == scUndefined || sh->sc == scNil)
- t = builtin_type_int;
- else
- t = parse_type(ax + sh->index, sh, 0);
- b = top_stack->cur_block;
- if (sh->st == stProc) {
- struct blockvector *bv = BLOCKVECTOR(top_stack->cur_st);
- /* The next test should normally be true,
- but provides a hook for nested functions
- (which we don't want to make global). */
- if (b == BLOCKVECTOR_BLOCK(bv, STATIC_BLOCK))
- b = BLOCKVECTOR_BLOCK(bv, GLOBAL_BLOCK);
- }
- add_symbol(s, b);
-
- /* Make a type for the procedure itself */
-#if 0
- /* FIXME: This has not been tested yet! See dbxread.c */
- /* Generate a template for the type of this function. The
- types of the arguments will be added as we read the symbol
- table. */
- bcopy(SYMBOL_TYPE(s),lookup_function_type(t),sizeof(struct type));
-#else
- SYMBOL_TYPE(s) = lookup_function_type (t);
-#endif
-
- /* Create and enter a new lexical context */
- b = new_block(top_stack->maxsyms);
- SYMBOL_BLOCK_VALUE(s) = b;
- BLOCK_FUNCTION(b) = s;
- BLOCK_START(b) = BLOCK_END(b) = sh->value;
- BLOCK_SUPERBLOCK(b) = top_stack->cur_block;
- add_block(b, top_stack->cur_st);
-
- /* Not if we only have partial info */
- if (sh->sc == scUndefined || sh->sc == scNil)
- break;
-
- push_parse_stack();
- top_stack->cur_block = b;
- top_stack->blocktype = sh->st;
- top_stack->cur_type = SYMBOL_TYPE(s);
- top_stack->cur_field = -1;
- top_stack->procadr = sh->value;
- top_stack->numargs = 0;
-
- sh->value = (long) SYMBOL_TYPE(s);
- break;
-
-
-#ifndef btVoid /* btVoid was added late. */
-#define btVoid 26
-#endif
-/* These new symbol types have been recently added to SGI machines. */
-#ifndef stStruct
-#define stStruct 26
-#endif
-#ifndef stUnion
-#define stUnion 27
-#endif
-#ifndef stEnum
-#define stEnum 28
-#endif
- case stStruct:
- case stUnion:
- case stEnum:
-
- case stBlock: /* Either a lexical block, or some type */
- push_parse_stack();
- top_stack->blocktype = stBlock;
- if (sh->sc == scInfo) { /* structure/union/enum def */
- int type_code =
- sh->st == stStruct ? TYPE_CODE_STRUCT
- : sh->st == stUnion ? TYPE_CODE_UNION
- : sh->st == stEnum ? TYPE_CODE_ENUM
- : TYPE_CODE_UNDEF;
- int nfields = 0;
- SYMR *tsym;
- long max_value = 0;
- struct field *f;
-
- s = new_symbol(sh->iss);
- SYMBOL_NAMESPACE(s) = STRUCT_NAMESPACE;
- SYMBOL_CLASS(s) = LOC_TYPEDEF;
- SYMBOL_VALUE(s) = 0;
- add_symbol(s, top_stack->cur_block);
-
- /* First count the number of fields. */
- for (tsym = sh+1; tsym->st != stEnd; tsym++)
- if (tsym->st == stMember) {
- if (nfields == 0 && type_code == TYPE_CODE_UNDEF)
- /* If the type of the member is Nil (or Void)
- assume the tag is an enumeration. */
- if (tsym->index == indexNil
- || ax[tsym->index].ti.bt == btNil
- || ax[tsym->index].ti.bt == btVoid)
- type_code = TYPE_CODE_ENUM;
- nfields++;
- if (tsym->value > max_value)
- max_value = tsym->value;
- }
- else if (tsym->st == stBlock
- || tsym->st == stParsed) {
- if (tsym->sc == scVariant) ; /*UNIMPLEMENTED*/
- if (tsym->index != 0)
- tsym = ((SYMR*)cur_fdr->isymBase)
- + tsym->index-1;
- }
-
-
- /* There is no guaranteed way to distinguish struct,
- 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;
-
- /* If this type was expected, use its partial definition */
- if (pend)
- t = is_pending_symbol(cur_fdr, sh)->t;
- else
- t = new_type(prepend_tag_kind(sh->iss, type_code));
-
- TYPE_CODE(t) = type_code;
- TYPE_LENGTH(t) = sh->value;
- TYPE_NFIELDS(t) = nfields;
- TYPE_FIELDS(t) = f = (struct field*)
- obstack_alloc (symbol_obstack,
- nfields * sizeof (struct field));
-
- if (type_code == TYPE_CODE_ENUM) {
- /* This is a non-empty enum. */
- for (tsym = sh + 1; tsym->st == stMember; tsym++) {
- struct symbol *enum_sym;
- f->bitpos = tsym->value;
- f->type = t;
- f->name = (char*)tsym->iss;
- f->bitsize = 0;
-
- enum_sym = (struct symbol *)
- obstack_alloc (symbol_obstack,
- sizeof (struct symbol));
- memset (enum_sym, 0, sizeof (struct symbol));
- SYMBOL_NAME (enum_sym) = f->name;
- SYMBOL_CLASS (enum_sym) = LOC_CONST;
- SYMBOL_TYPE (enum_sym) = t;
- SYMBOL_NAMESPACE (enum_sym) = VAR_NAMESPACE;
- SYMBOL_VALUE (enum_sym) = tsym->value;
- add_symbol(enum_sym, top_stack->cur_block);
-
- /* Skip the stMembers that we've handled. */
- count++;
- f++;
- }
- }
- SYMBOL_TYPE(s) = t;
- /* make this the current type */
- top_stack->cur_type = t;
- top_stack->cur_field = 0;
- /* Mark that symbol has a type, and say which one */
- sh->value = (long) t;
- } else {
- /* beginnning of (code) block. Value of symbol
- is the displacement from procedure start */
- b = new_block(top_stack->maxsyms);
- BLOCK_START(b) = sh->value + top_stack->procadr;
- BLOCK_SUPERBLOCK(b) = top_stack->cur_block;
- top_stack->cur_block = b;
- add_block(b, top_stack->cur_st);
- }
- break;
-
- case stEnd: /* end (of anything) */
- if (sh->sc == scInfo) {
- /* 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 = BLOCKVECTOR(top_stack->cur_st);
- struct block *b;
- int i;
-
- BLOCK_END(top_stack->cur_block) += sh->value; /* size */
- got_numargs(top_stack->procadr, top_stack->numargs);
- /* Reallocate symbols, saving memory */
- b = shrink_block(top_stack->cur_block, top_stack->cur_st);
-
- /* f77 emits proc-level with address bounds==[0,0],
- So look for such child blocks, and patch them. */
- for (i = 0; i < BLOCKVECTOR_NBLOCKS(bv); i++) {
- struct block *b_bad = BLOCKVECTOR_BLOCK(bv,i);
- if (BLOCK_SUPERBLOCK(b_bad) == b
- && BLOCK_START(b_bad) == top_stack->procadr
- && BLOCK_END(b_bad) == top_stack->procadr) {
- BLOCK_START(b_bad) = BLOCK_START(b);
- BLOCK_END(b_bad) = BLOCK_END(b);
- }
- }
- } 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. */
- BLOCK_END(top_stack->cur_block) = sh->value + top_stack->procadr;
- (void) shrink_block(top_stack->cur_block, top_stack->cur_st);
- }
- pop_parse_stack(); /* restore previous lexical context */
- break;
-
- case stMember: /* member of struct or union */
- f = &TYPE_FIELDS(top_stack->cur_type)[top_stack->cur_field++];
- f->name = (char*)sh->iss;
- f->bitpos = sh->value;
- f->bitsize = 0;
- f->type = parse_type(ax + sh->index, sh, &f->bitsize);
- break;
-
- case stTypedef: /* type definition */
- s = new_symbol(sh->iss);
- SYMBOL_NAMESPACE(s) = VAR_NAMESPACE;
- SYMBOL_CLASS(s) = LOC_TYPEDEF;
- SYMBOL_BLOCK_VALUE(s) = top_stack->cur_block;
- add_symbol(s, top_stack->cur_block);
- SYMBOL_TYPE(s) = parse_type(ax + sh->index, sh, 0);
- sh->value = (long) SYMBOL_TYPE(s);
- 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:
- error("Unknown symbol type %x.", sh->st);
- }
- sh->st = stParsed;
- return count;
-}
-
-/* Parse the type information provided in the AX entries for
- the symbol SH. Return the bitfield size in BS, in case. */
-
-static struct type *parse_type(ax, sh, bs)
- AUXU *ax;
- SYMR *sh;
- int *bs;
-{
- /* Null entries in this map are treated specially */
- static struct type **map_bt[] =
- {
- &builtin_type_void, /* btNil */
- 0, /* btAdr */
- &builtin_type_char, /* btChar */
- &builtin_type_unsigned_char, /* btUChar */
- &builtin_type_short, /* btShort */
- &builtin_type_unsigned_short, /* btUShort */
- &builtin_type_int, /* btInt */
- &builtin_type_unsigned_int, /* btUInt */
- &builtin_type_long, /* btLong */
- &builtin_type_unsigned_long, /* btULong */
- &builtin_type_float, /* btFloat */
- &builtin_type_double, /* btDouble */
- 0, /* btStruct */
- 0, /* btUnion */
- 0, /* btEnum */
- 0, /* btTypedef */
- 0, /* btRange */
- 0, /* btSet */
- &builtin_type_complex, /* btComplex */
- &builtin_type_double_complex, /* btDComplex */
- 0, /* btIndirect */
- &builtin_type_fixed_dec, /* btFixedDec */
- &builtin_type_float_dec, /* btFloatDec */
- &builtin_type_string, /* btString */
- 0, /* btBit */
- 0, /* btPicture */
- &builtin_type_void, /* btVoid */
- };
-
- TIR *t;
- struct type *tp = 0;
- char *fmt;
- int i;
- int type_code;
-
- /* Procedures start off by one */
- if (sh->st == stProc || sh->st == stStaticProc)
- ax++;
-
- /* Undefined ? Should not happen */
- if (ax->rndx.rfd == 0xfff) {
- return builtin_type_void;
- }
-
- /* Use aux as a type information record, map its basic type */
- t = &ax->ti;
- if (t->bt > (sizeof (map_bt)/sizeof (*map_bt))) {
- complain (&basic_type_complaint, t->bt);
- return builtin_type_int;
- }
- if (map_bt[t->bt]) {
- tp = *map_bt[t->bt];
- fmt = "%s";
- } else {
- tp = NULL;
- /* Cannot use builtin types -- build our own */
- switch (t->bt) {
- case btAdr:
- tp = lookup_pointer_type (builtin_type_void);
- fmt = "%s";
- break;
- case btStruct:
- type_code = TYPE_CODE_STRUCT;
- fmt = "struct %s";
- break;
- case btUnion:
- type_code = TYPE_CODE_UNION;
- fmt = "union %s";
- break;
- case btEnum:
- type_code = TYPE_CODE_ENUM;
- fmt = "enum %s";
- break;
- case btRange:
- type_code = TYPE_CODE_RANGE;
- fmt = "%s";
- break;
- case btSet:
- type_code = TYPE_CODE_SET;
- fmt = "set %s";
- break;
- case btTypedef:
- default:
- complain (&basic_type_complaint, t->bt);
- return builtin_type_int;
- }
- }
-
- /* Move on to next aux */
- ax++;
- if (t->continued) {
- /* This is the way it would work if the compiler worked */
- register TIR *t1 = t;
- while (t1->continued)
- ax++;
- }
-
- if (t->fBitfield) {
- *bs = ax->width;
- ax++;
- }
-
- /* 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 == btIndirect ||
- t->bt == btStruct ||
- t->bt == btUnion ||
- t->bt == btEnum ||
- t->bt == btTypedef ||
- t->bt == btRange ||
- t->bt == btSet) {
- char name[256], *pn;
-
- /* Try to cross reference this type */
- ax += cross_ref(ax, &tp, type_code, &pn);
- /* reading .o file ? */
- if (UNSAFE_DATA_ADDR(tp))
- tp = make_type(type_code, 0, 0, 0);
- /* SOMEONE OUGHT TO FIX DBXREAD TO DROP "STRUCT" */
- sprintf(name, fmt, pn);
-
- /* Usually, TYPE_CODE(tp) is already type_code. The main
- exception is if we guessed wrong re struct/union/enum. */
- if (TYPE_CODE(tp) != type_code) {
- complain (&bad_tag_guess_complaint, 0);
- TYPE_CODE(tp) = type_code;
- }
- if (TYPE_NAME(tp) == NULL || strcmp(TYPE_NAME(tp), name) != 0)
- TYPE_NAME(tp) = obsavestring(name, strlen(name));
- }
-
- /* Deal with range types */
- if (t->bt == btRange) {
- struct field *f;
-
- TYPE_NFIELDS (tp) = 2;
- TYPE_FIELDS (tp) =
- (struct field *) obstack_alloc (symbol_obstack,
- 2 * sizeof (struct field));
- TYPE_FIELD_NAME (tp, 0) = "Low";
- TYPE_FIELD_BITPOS (tp, 0) = ax->dnLow;
- ax++;
- TYPE_FIELD_NAME (tp, 1) = "High";
- TYPE_FIELD_BITPOS (tp, 1) = ax->dnHigh;
- ax++;
- }
-
- /* Parse all the type qualifiers now. If there are more
- than 6 the game will continue in the next aux */
-
-#define PARSE_TQ(tq) \
- if (t->tq != tqNil) ax += upgrade_type(&tp, t->tq, ax, sh);
-
-again: PARSE_TQ(tq0);
- PARSE_TQ(tq1);
- PARSE_TQ(tq2);
- PARSE_TQ(tq3);
- PARSE_TQ(tq4);
- PARSE_TQ(tq5);
-#undef PARSE_TQ
-
- if (t->continued) {
- t++;
- goto again;
- }
- 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.
- Returns the number of aux symbols we parsed. */
-
-static int
-upgrade_type(tpp, tq, ax, sh)
- struct type **tpp;
- AUXU *ax;
- SYMR *sh;
-{
- int off;
- struct type *t;
-
- /* Used in array processing */
- int rf, id;
- FDR *fh;
- struct field *f;
- SYMR ss;
- int lower, upper;
-
- 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;
- t = make_type(TYPE_CODE_ARRAY, 0, 0, 0);
- TYPE_TARGET_TYPE(t) = *tpp;
-
- /* Determine and record the domain type (type of index) */
- id = ax->rndx.index;
- rf = ax->rndx.rfd;
- if (rf == 0xfff) {
- rf = (++ax)->isym;
- off++;
- }
- fh = get_rfd(cur_fd, rf);
-
- /* Fields are kept in an array */
- /* FIXME - Memory leak! */
- if (TYPE_NFIELDS(t))
- TYPE_FIELDS(t) = (struct field*)
- xrealloc(TYPE_FIELDS(t),
- (TYPE_NFIELDS(t)+1) * sizeof(struct field));
- else
- TYPE_FIELDS(t) = (struct field*)
- xzalloc(sizeof(struct field));
- f = &(TYPE_FIELD(t,TYPE_NFIELDS(t)));
- TYPE_NFIELDS(t)++;
- memset(f, 0, sizeof(struct field));
-
- memset(&ss, 0, sizeof ss);
-/* XXX */ f->type = parse_type(fh->iauxBase + id * sizeof(AUXU),
- &ss, &f->bitsize);
-
- if (off == 0) {
- /*
- * This seems to be a pointer to the end of the Block defining
- * the type. Why it is here is magic for me, and I have no
- * good use for it anyways.
- */
- /* This used to occur because cross_ref returned
- the wrong result (ax pointed wrong). FIXME,
- delete this code in a while. -- gnu@cygnus jul91 */
- complain (&array_parse_complaint, 0);
- off++;
- id = (++ax)->rndx.index;
- if ((rf = ax->rndx.rfd) == 0xfff)
- rf = (++ax)->isym, off++;
- }
- lower = (++ax)->dnLow;
- upper = (++ax)->dnHigh;
- rf = (++ax)->width; /* bit size of array element */
-
- /* Check whether supplied array element bit size matches
- the known size of the element type. If this complaint
- ends up not happening, we can remove this code. It's
- here because we aren't sure we understand this *&%&$
- symbol format. */
- id = TYPE_LENGTH(TYPE_TARGET_TYPE(t)) << 3; /* bitsize */
- if (id == 0) {
- /* Most likely an undefined type */
- id = rf;
- TYPE_LENGTH(TYPE_TARGET_TYPE(t)) = id >> 3;
- }
- if (id != rf)
- complain (&array_bitsize_complaint, rf);
-
- TYPE_LENGTH(t) = (upper < 0) ? 0 :
- (upper - lower + 1) * (rf >> 3);
- *tpp = t;
- return 4 + off;
-
- case tqVol:
- /* Volatile -- currently ignored */
- return 0;
-
- default:
- complain (&unknown_type_qual_complaint, tq);
- return 0;
- }
-}
-
-
-/* Parse a procedure descriptor record PR. Note that the procedure
- is parsed _after_ the local symbols, now we just make up the
- extra information we need into a special symbol that we insert
- 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.
- The procedure's code ends at BOUND */
-
-static
-parse_procedure(pr, bound)
- PDR *pr;
-{
- struct symbol *s, *i;
- SYMR *sh = (SYMR*)pr->isym;
- struct block *b;
- struct mips_extra_func_info *e;
- char name[100];
- char *sh_name;
-
- /* Reuse the MIPS record */
- e = (struct mips_extra_func_info *) pr;
- e->numargs = lookup_numargs(pr->adr);
-
- /* Make up our special symbol */
- i = new_symbol(".gdbinfo.");
- SYMBOL_VALUE(i) = (int)e;
- SYMBOL_NAMESPACE(i) = LABEL_NAMESPACE;
- SYMBOL_CLASS(i) = LOC_CONST;
- SYMBOL_TYPE(i) = builtin_type_void;
-
- /* Make up a name for static procedures. Sigh. */
- if (sh == (SYMR*)-1) {
- sprintf(name,".static_procedure@%x",pr->adr);
- sh_name = savestring(name, strlen(name));
- s = NULL;
- }
- else {
- sh_name = (char*)sh->iss;
- s = mylookup_symbol(sh_name, top_stack->cur_block,
- VAR_NAMESPACE, LOC_BLOCK);
- }
- if (s != 0) {
- b = SYMBOL_BLOCK_VALUE(s);
- } else {
- s = new_symbol(sh_name);
- SYMBOL_NAMESPACE(s) = VAR_NAMESPACE;
- SYMBOL_CLASS(s) = LOC_BLOCK;
- /* Donno its type, hope int is ok */
- SYMBOL_TYPE(s) = lookup_function_type (builtin_type_int);
- add_symbol(s, top_stack->cur_block);
- /* Wont have symbols for this one */
- b = new_block(2);
- SYMBOL_BLOCK_VALUE(s) = b;
- BLOCK_FUNCTION(b) = s;
- BLOCK_START(b) = pr->adr;
- BLOCK_END(b) = bound;
- BLOCK_SUPERBLOCK(b) = top_stack->cur_block;
- add_block(b, top_stack->cur_st);
- }
- e->isym = (long)s;
- add_symbol(i,b);
-}
-
-/* Parse the external symbol ES. Just call parse_symbol() after
- making sure we know where the aux are for it. For procedures,
- parsing of the PDRs has already provided all the needed
- information, we only parse them if SKIP_PROCEDURES is false,
- and only if this causes no symbol duplication.
-
- This routine clobbers top_stack->cur_block and ->cur_st. */
-
-static
-parse_external(es, skip_procedures)
- EXTR *es;
-{
- AUXU *ax;
-
- if (es->ifd != ifdNil) {
- cur_fd = es->ifd;
- cur_fdr = (FDR*)(cur_hdr->cbFdOffset) + cur_fd;
- ax = (AUXU*)cur_fdr->iauxBase;
- } else {
- cur_fdr = (FDR*)(cur_hdr->cbFdOffset);
- ax = 0;
- }
- top_stack->cur_st = cur_stab;
- top_stack->cur_block = BLOCKVECTOR_BLOCK(BLOCKVECTOR(top_stack->cur_st),
- GLOBAL_BLOCK);
-
- /* Reading .o files */
- if (es->asym.sc == scUndefined || es->asym.sc == scNil) {
- char *what;
- switch (es->asym.st) {
- 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++;
- if (info_verbose)
- printf_filtered("Warning: %s `%s' is undefined (in %s)\n", what,
- es->asym.iss, fdr_name(cur_fdr->rss));
- return;
- }
-
- switch (es->asym.st) {
- case stProc:
- /* If we have full symbols we do not need more */
- if (skip_procedures)
- return;
- if (mylookup_symbol (es->asym.iss, top_stack->cur_block,
- VAR_NAMESPACE, LOC_BLOCK))
- break;
- /* fall through */
- case stGlobal:
- case stLabel:
- /*
- * Note that the case of a symbol with indexNil
- * must be handled anyways by parse_symbol().
- */
- parse_symbol(&es->asym, ax);
- 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
-parse_lines(fh, lt)
- FDR *fh;
- struct linetable *lt;
-{
- unsigned char *base = (unsigned char*)fh->cbLineOffset;
- int i, j, k;
- int delta, count, lineno = 0;
- PDR *pr;
-
- if (base == 0)
- return;
-
- /* Scan by procedure descriptors */
- i = 0; j = 0, k = 0;
- for (pr = (PDR*)IPDFIRST(cur_hdr,fh); j < fh->cpd; j++, pr++) {
- int l, halt;
-
- /* No code for this one */
- if (pr->iline == ilineNil ||
- pr->lnLow == -1 || pr->lnHigh == -1)
- continue;
- /*
- * Aurgh! To know where to stop expanding we
- * must look-ahead.
- */
- for (l = 1; l < (fh->cpd - j); l++)
- if (pr[l].iline != -1)
- break;
- if (l == (fh->cpd - j))
- halt = fh->cline;
- else
- halt = pr[l].iline;
- /*
- * When procedures are moved around the linenumbers
- * are attributed to the next procedure up
- */
- if (pr->iline >= halt) continue;
-
- base = (unsigned char*)pr->cbLineOffset;
- l = pr->adr >> 2; /* in words */
- halt += (pr->adr >> 2) - pr->iline;
- for (lineno = pr->lnLow; l < 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 */
- k = add_line(lt, lineno, l, k);
- l += count + 1;
- }
- }
-}
-
-\f
-/* Master parsing procedure for first-pass reading of file symbols
- into a partial_symtab.
-
- Parses the symtab described by the global symbolic header CUR_HDR.
- END_OF_TEXT_SEG gives the address just after the text segment for
- the symtab we are reading. */
-
-static
-parse_partial_symbols(end_of_text_seg, objfile)
- int end_of_text_seg;
- struct objfile *objfile;
-{
- int f_idx, s_idx;
-/* int stat_idx, h_max;*/
- HDRR *hdr = cur_hdr;
- /* Running pointers */
- FDR *fh;
- RFDT *rh;
- register EXTR *esh;
- register SYMR *sh;
- struct partial_symtab *pst;
-
- int past_first_source_file = 0;
-
- /* List of current psymtab's include files */
- char **psymtab_include_list;
- int includes_allocated;
- int includes_used;
- EXTR **extern_tab;
- struct pst_map * fdr_to_pst;
- /* Index within current psymtab dependency list */
- struct partial_symtab **dependency_list;
- int dependencies_used, dependencies_allocated;
- struct cleanup *old_chain;
-
- extern_tab = (EXTR**)obstack_alloc (psymbol_obstack,
- sizeof(EXTR *) * hdr->iextMax);
-
- includes_allocated = 30;
- includes_used = 0;
- psymtab_include_list = (char **) alloca (includes_allocated *
- sizeof (char *));
- next_symbol_text_func = mips_next_symbol_text;
-
- dependencies_allocated = 30;
- dependencies_used = 0;
- dependency_list =
- (struct partial_symtab **) alloca (dependencies_allocated *
- sizeof (struct partial_symtab *));
-
- last_source_file = 0;
-
- /*
- * 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 */
- fdr_to_pst = (struct pst_map *)xzalloc((hdr->ifdMax+1) * sizeof *fdr_to_pst);
- old_chain = make_cleanup (free, fdr_to_pst);
- fdr_to_pst++;
+ else if (STREQ (sectp->name, ".dynstr"))
{
- struct partial_symtab * pst = new_psymtab("", objfile);
- fdr_to_pst[-1].pst = pst;
- FDR_IDX(pst) = -1;
+ si->str_sect = sectp;
}
-
- /* Pass 1 over external syms: Presize and partition the list */
- for (s_idx = 0; s_idx < hdr->iextMax; s_idx++) {
- esh = (EXTR *) (hdr->cbExtOffset) + s_idx;
- fdr_to_pst[esh->ifd].n_globals++;
+ else if (STREQ (sectp->name, ".dynamic"))
+ {
+ si->dyninfo_sect = sectp;
}
-
- /* 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;
+ else if (STREQ (sectp->name, ".got"))
+ {
+ si->got_sect = sectp;
}
-
-/* Pass 2 over external syms: fill in external symbols */
- for (s_idx = 0; s_idx < hdr->iextMax; s_idx++) {
- enum misc_function_type misc_type = mf_text;
- esh = (EXTR *) (hdr->cbExtOffset) + s_idx;
-
- extern_tab[fdr_to_pst[esh->ifd].globals_offset
- + fdr_to_pst[esh->ifd].n_globals++] = esh;
-
- if (esh->asym.sc == scUndefined || esh->asym.sc == scNil)
- continue;
-
- switch (esh->asym.st) {
- case stProc:
- break;
- case stGlobal:
- misc_type = mf_data;
- break;
- case stLabel:
- break;
- default:
- misc_type = mf_unknown;
- complain (&unknown_ext_complaint,
- (char *)(esh->asym.iss));
- }
- prim_record_misc_function ((char *)(esh->asym.iss),
- esh->asym.value,
- misc_type);
- }
-
- /* Pass 3 over files, over local syms: fill in static symbols */
- for (f_idx = 0; f_idx < hdr->ifdMax; f_idx++) {
- struct partial_symtab *save_pst;
- EXTR **ext_ptr;
- cur_fdr = fh = f_idx + (FDR *)(cur_hdr->cbFdOffset);
-
- if (fh->csym == 0) {
- fdr_to_pst[f_idx].pst = NULL;
- continue;
- }
- pst = start_psymtab_common (objfile, 0, (char*)fh->rss,
- fh->cpd ? fh->adr : 0,
- global_psymbols.next,
- static_psymbols.next);
- pst->read_symtab_private = (char *)
- obstack_alloc (psymbol_obstack, sizeof (struct symloc));
-
- save_pst = pst;
- /* Make everything point to everything. */
- FDR_IDX(pst) = f_idx;
- fdr_to_pst[f_idx].pst = pst;
- fh->ioptBase = (int)pst;
-
- CUR_HDR(pst) = cur_hdr;
-
- /* The way to turn this into a symtab is to call... */
- pst->read_symtab = mipscoff_psymtab_to_symtab;
-
- pst->texthigh = pst->textlow;
-
- pst->globals_offset = global_psymbols.next - global_psymbols.list;
- pst->statics_offset = static_psymbols.next - static_psymbols.list;
-
- pst->n_global_syms = 0;
- pst->n_static_syms = 0;
-
- /* 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
- && strcmp(((SYMR *)fh->isymBase)[1].iss, stabs_symbol) == 0) {
- for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) {
- int type_code;
- char *namestring;
- sh = cur_sdx + (SYMR *) fh->isymBase;
- type_code = MIPS_UNMARK_STAB(sh->index);
- if (!MIPS_IS_STAB(sh)) {
- if (sh->st == stProc || sh->st == stStaticProc) {
- long procaddr = sh->value;
- sh = (sh->index + (AUXU *)fh->iauxBase)->isym
- + (SYMR *) fh->isymBase - 1;
- if (sh->st == stEnd) {
- long high = procaddr + sh->value;
- if (high > pst->texthigh)
- pst->texthigh = high;
- }
- }
- continue;
- }
-#define SET_NAMESTRING() namestring = (char*)sh->iss
-#define CUR_SYMBOL_TYPE type_code
-#define CUR_SYMBOL_VALUE sh->value
-#define START_PSYMTAB(ofile,addr,fname,low,symoff,global_syms,static_syms)\
- pst = save_pst
-#define END_PSYMTAB(pst,ilist,ninc,c_off,c_text,dep_list,n_deps) (void)0
-#define addr 0 /* FIXME, should be offset of addresses */
-#define HANDLE_RBRAC(val) \
- if ((val) > save_pst->texthigh) save_pst->texthigh = (val);
-#include "partial-stab.h"
-#undef addr
- }
- }
- else {
- register struct partial_symbol *psym;
- for (cur_sdx = 0; cur_sdx < fh->csym; ) {
- register struct partial_symbol *p;
- char *name;
- int class;
- sh = cur_sdx + (SYMR *) fh->isymBase;
-
- if (MIPS_IS_STAB(sh)) {
- cur_sdx++;
- continue;
- }
-
- if (sh->sc == scUndefined || sh->sc == scNil ||
- sh->index == 0xfffff) {
- /* FIXME, premature? */
- cur_sdx++;
- continue;
- }
-
- name = (char *)(sh->iss);
-
- switch (sh->st) {
- long high;
- long procaddr;
- case stProc: /* Asm labels apparently */
- case stStaticProc: /* Function */
- ADD_PSYMBOL_TO_LIST(name, strlen(name),
- VAR_NAMESPACE, LOC_BLOCK,
- static_psymbols, sh->value);
- /* Skip over procedure to next one. */
- cur_sdx = (sh->index + (AUXU *)fh->iauxBase)->isym;
- procaddr = sh->value;
-
- sh = cur_sdx + (SYMR *) fh->isymBase - 1;
- if (sh->st != stEnd)
- continue;
- high = procaddr + sh->value;
- if (high > pst->texthigh)
- pst->texthigh = high;
- continue;
- case stStatic: /* Variable */
- class = LOC_STATIC;
- break;
- case stTypedef: /* Typedef */
- class = LOC_TYPEDEF;
- break;
- case stConstant: /* Constant decl */
- class = LOC_CONST;
- break;
- case stBlock: /* { }, str, un, enum*/
- if (sh->sc == scInfo) {
- ADD_PSYMBOL_TO_LIST(name, strlen(name),
- STRUCT_NAMESPACE, LOC_TYPEDEF,
- static_psymbols, sh->value);
- }
- /* Skip over the block */
- cur_sdx = sh->index;
- continue;
- case stFile: /* File headers */
- case stLabel: /* Labels */
- case stEnd: /* Ends of files */
- goto skip;
- default:
- complain (&unknown_sym_complaint, SYMBOL_NAME(p));
- complain (&unknown_st_complaint, sh->st);
- cur_sdx++;
- continue;
- }
- /* Use this gdb symbol */
- ADD_PSYMBOL_TO_LIST(name, strlen(name),
- VAR_NAMESPACE, class,
- static_psymbols, sh->value);
- 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 address_class class;
- if ((*ext_ptr)->ifd != f_idx)
- abort();
- sh = &(*ext_ptr)->asym;
- switch (sh->st) {
- case stProc:
- class = LOC_BLOCK;
- break;
- case stLabel:
- class = LOC_LABEL;
- break;
- default:
- complain (&unknown_ext_complaint, sh->iss);
- case stGlobal:
- class = LOC_STATIC;
- break;
- }
- if (global_psymbols.next >=
- global_psymbols.list + global_psymbols.size)
- extend_psymbol_list (&global_psymbols);
- psym = global_psymbols.next++;
- SYMBOL_NAME (psym) = (char*)sh->iss;
- SYMBOL_NAMESPACE (psym) = VAR_NAMESPACE;
- SYMBOL_CLASS (psym) = class;
- SYMBOL_VALUE_ADDRESS (psym) = (CORE_ADDR)sh->value;
- }
- }
-
- end_psymtab (save_pst, psymtab_include_list, includes_used,
- -1, save_pst->texthigh,
- dependency_list, dependencies_used,
- global_psymbols.next, static_psymbols.next);
- if (entry_point < save_pst->texthigh
- && entry_point >= save_pst->textlow) {
- startup_file_start = save_pst->textlow;
- startup_file_end = save_pst->texthigh;
- }
- }
-
- /* Mark the last code address, and remember it for later */
- hdr->cbDnOffset = end_of_text_seg;
-
- do_cleanups (old_chain);
-}
-
-
-#if 0
-/* Do the initial analisys of the F_IDX-th file descriptor.
- Allocates a partial symtab for it, and builds the list
- of dependent files by recursion. LEV says at which level
- of recursion we are called (to pretty up debug traces) */
-
-static struct partial_symtab *
-parse_fdr(f_idx, lev, objfile)
- int f_idx;
- int lev;
- struct objfile *objfile;
-{
- register FDR *fh;
- register struct partial_symtab *pst;
- int s_idx, s_id0;
-
- fh = (FDR *) (cur_hdr->cbFdOffset) + f_idx;
-
- /* Use this to indicate into which symtab this file was parsed */
- if (fh->ioptBase)
- return (struct partial_symtab *) fh->ioptBase;
-
- /* Debuggability level */
- if (compare_glevel(max_glevel, fh->glevel) < 0)
- max_glevel = fh->glevel;
-
- /* Make a new partial_symtab */
- pst = new_psymtab(fh->rss, objfile);
- if (fh->cpd == 0){
- pst->textlow = 0;
- pst->texthigh = 0;
- } else {
- pst->textlow = fh->adr;
- pst->texthigh = fh->cpd; /* To be fixed later */
- }
-
- /* Make everything point to everything. */
- FDR_IDX(pst) = f_idx;
- fdr_to_pst[f_idx].pst = pst;
- fh->ioptBase = (int)pst;
-
- /* Analyze its dependencies */
- if (fh->crfd <= 1)
- return pst;
-
- s_id0 = 0;
- if (fh->cpd == 0) { /* If there are no functions defined here ... */
- /* ...then presumably a .h file: drop reverse depends .h->.c */
- for (; s_id0 < fh->crfd; s_id0++) {
- RFDT *rh = (RFDT *) (fh->rfdBase) + s_id0;
- if (*rh == f_idx) {
- s_id0++; /* Skip self-dependency */
- break;
- }
- }
- }
- pst->number_of_dependencies = fh->crfd - s_id0;
- pst->dependencies = (struct partial_symtab **)
- obstack_alloc (psymbol_obstack,
- pst->number_of_dependencies *
- sizeof (struct partial_symtab *));
- for (s_idx = s_id0; s_idx < fh->crfd; s_idx++) {
- RFDT *rh = (RFDT *) (fh->rfdBase) + s_idx;
-
- pst->dependencies[s_idx-s_id0] = parse_fdr(*rh, lev+1, objfile);
- }
-
- return pst;
-}
-#endif
-
-static char*
-mips_next_symbol_text ()
-{
- cur_sdx++;
- return (char*)((SYMR *)cur_fdr->isymBase)[cur_sdx].iss;
}
-/* 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. */
+/* Scan an alpha dynamic symbol table for symbols of interest and
+ add them to the minimal symbol table. */
static void
-psymtab_to_symtab_1(pst, filename)
- struct partial_symtab *pst;
- char *filename;
+read_alphacoff_dynamic_symtab (section_offsets, objfile)
+ struct section_offsets *section_offsets;
+ struct objfile *objfile;
{
- int have_stabs;
- int i, f_max;
- struct symtab *st;
- FDR *fh;
- int maxlines;
- struct linetable *lines;
-
- if (pst->readin)
- return;
- pst->readin = 1;
-
- /* How many symbols will we need */
- /* FIXME, this does not count enum values. */
- f_max = pst->n_global_syms + pst->n_static_syms;
- if (FDR_IDX(pst) == -1) {
- fh = 0;
- maxlines = 0;
- } else {
- fh = (FDR *) (cur_hdr->cbFdOffset) + FDR_IDX(pst);
- f_max += fh->csym + fh->cpd;
- maxlines = 2 * fh->cline;
- }
+ bfd *abfd = objfile->obfd;
+ struct alphacoff_dynsecinfo si;
+ char *sym_secptr;
+ char *str_secptr;
+ char *dyninfo_secptr;
+ char *got_secptr;
+ bfd_size_type sym_secsize;
+ bfd_size_type str_secsize;
+ bfd_size_type dyninfo_secsize;
+ bfd_size_type got_secsize;
+ int sym_count;
+ int i;
+ int stripped;
+ Elfalpha_External_Sym *x_symp;
+ char *dyninfo_p;
+ char *dyninfo_end;
+ int got_entry_size = 8;
+ int dt_mips_local_gotno = -1;
+ int dt_mips_gotsym = -1;
+
+
+ /* We currently only know how to handle alpha dynamic symbols. */
+ if (bfd_get_arch (abfd) != bfd_arch_alpha)
+ return;
+
+ /* Locate the dynamic symbols sections and read them in. */
+ memset ((char *) &si, 0, sizeof (si));
+ bfd_map_over_sections (abfd, alphacoff_locate_sections, (PTR) &si);
+ if (si.sym_sect == NULL
+ || si.str_sect == NULL
+ || si.dyninfo_sect == NULL
+ || si.got_sect == NULL)
+ return;
+
+ sym_secsize = bfd_get_section_size_before_reloc (si.sym_sect);
+ str_secsize = bfd_get_section_size_before_reloc (si.str_sect);
+ dyninfo_secsize = bfd_get_section_size_before_reloc (si.dyninfo_sect);
+ got_secsize = bfd_get_section_size_before_reloc (si.got_sect);
+ sym_secptr = alloca (sym_secsize);
+ str_secptr = alloca (str_secsize);
+ dyninfo_secptr = alloca (dyninfo_secsize);
+ got_secptr = alloca (got_secsize);
+
+ if (!bfd_get_section_contents (abfd, si.sym_sect, sym_secptr,
+ (file_ptr)0, sym_secsize))
+ return;
+ if (!bfd_get_section_contents (abfd, si.str_sect, str_secptr,
+ (file_ptr)0, str_secsize))
+ return;
+ if (!bfd_get_section_contents (abfd, si.dyninfo_sect, dyninfo_secptr,
+ (file_ptr)0, dyninfo_secsize))
+ return;
+ if (!bfd_get_section_contents (abfd, si.got_sect, got_secptr,
+ (file_ptr)0, got_secsize))
+ return;
+
+ /* Find the number of local GOT entries and the index for the
+ the first dynamic symbol in the GOT. */
+ for (dyninfo_p = dyninfo_secptr, dyninfo_end = dyninfo_p + dyninfo_secsize;
+ dyninfo_p < dyninfo_end;
+ dyninfo_p += sizeof (Elfalpha_External_Dyn))
+ {
+ Elfalpha_External_Dyn *x_dynp = (Elfalpha_External_Dyn *)dyninfo_p;
+ long dyn_tag;
- /* See comment in parse_partial_symbols about the @stabs sentinel. */
- have_stabs =
- fh && fh->csym >= 2
- && strcmp(((SYMR *)fh->isymBase)[1].iss, stabs_symbol) == 0;
-
- if (!have_stabs) {
- if (fh)
- st = new_symtab (pst->filename, 2 * f_max, maxlines,
- pst->objfile);
- else
- st = new_symtab ("unknown", f_max, 0, pst->objfile);
- lines = LINETABLE(st);
- pending_list = (struct mips_pending **) cur_hdr->cbOptOffset;
- if (pending_list == 0) {
- pending_list = (struct mips_pending **)
- xzalloc(cur_hdr->ifdMax * sizeof(struct mips_pending *));
- cur_hdr->cbOptOffset = (int)pending_list;
+ dyn_tag = bfd_h_get_32 (abfd, (bfd_byte *) x_dynp->d_tag);
+ if (dyn_tag == DT_NULL)
+ break;
+ else if (dyn_tag == DT_MIPS_LOCAL_GOTNO)
+ {
+ dt_mips_local_gotno = bfd_h_get_32 (abfd,
+ (bfd_byte *) x_dynp->d_un.d_val);
}
- }
-
- /* Read in all partial symbtabs on which this one is dependent.
- NOTE that we do have circular dependencies, sigh. We solved
- that by setting pst->readin before this point. */
-
- for (i = 0; i < pst->number_of_dependencies; i++)
- if (!pst->dependencies[i]->readin) {
- /* Inform about additional files to be read in. */
- if (info_verbose)
- {
- fputs_filtered (" ", stdout);
- wrap_here ("");
- fputs_filtered ("and ", stdout);
- wrap_here ("");
- printf_filtered ("%s...",
- pst->dependencies[i]->filename);
- wrap_here (""); /* Flush output */
- fflush (stdout);
- }
- /* We only pass the filename for debug purposes */
- psymtab_to_symtab_1(pst->dependencies[i],
- pst->dependencies[i]->filename);
+ else if (dyn_tag == DT_MIPS_GOTSYM)
+ {
+ dt_mips_gotsym = bfd_h_get_32 (abfd, (bfd_byte *) x_dynp->d_un.d_val);
}
-
- cur_fdr = fh;
- /* Now read the symbols for this symtab */
-
- if (!have_stabs) {
- cur_fd = FDR_IDX(pst);
- cur_stab = st;
-
- /* Get a new lexical context */
-
- push_parse_stack();
- top_stack->cur_st = cur_stab;
- top_stack->cur_block = BLOCKVECTOR_BLOCK(BLOCKVECTOR(cur_stab),
- STATIC_BLOCK);
- BLOCK_START(top_stack->cur_block) = fh ? fh->adr : 0;
- BLOCK_END(top_stack->cur_block) = 0;
- top_stack->blocktype = stFile;
- top_stack->maxsyms = 2*f_max;
- top_stack->cur_type = 0;
- top_stack->procadr = 0;
- top_stack->numargs = 0;
}
-
- /* Parse locals and procedures */
- if (fh) {
- SYMR *sh;
- PDR *pr;
- int f_idx = cur_fd;
- char *fh_name = (char*)fh->rss;
-
- /* Parse local symbols first */
-
-
- if (have_stabs) {
- if (fh->csym <= 2)
- return;
- for (cur_sdx = 2; cur_sdx < fh->csym; cur_sdx++) {
- register SYMR *sh = cur_sdx + (SYMR *) fh->isymBase;
- char *name = (char*)sh->iss;
- CORE_ADDR valu = sh->value;
- if (MIPS_IS_STAB(sh)) {
- int type_code = MIPS_UNMARK_STAB(sh->index);
- process_one_symbol (type_code, 0, valu, name, /*FIXME*/ 0);
- }
- else if (sh->st == stLabel && sh->index != indexNil) {
- /* Handle encoded stab line number. */
- record_line (current_subfile, sh->index, valu);
- }
+ if (dt_mips_local_gotno < 0 || dt_mips_gotsym < 0)
+ return;
+
+ /* Scan all dynamic symbols and enter them into the minimal symbol table
+ if appropriate. */
+ sym_count = sym_secsize / sizeof (Elfalpha_External_Sym);
+ stripped = (bfd_get_symcount (abfd) == 0);
+
+ /* Skip first symbol, which is a null dummy. */
+ for (i = 1, x_symp = (Elfalpha_External_Sym *) sym_secptr + 1;
+ i < sym_count;
+ i++, x_symp++)
+ {
+ unsigned long strx;
+ char *name;
+ bfd_vma sym_value;
+ unsigned char sym_info;
+ unsigned int sym_shndx;
+ int isglobal;
+ enum minimal_symbol_type ms_type;
+
+ strx = bfd_h_get_32 (abfd, (bfd_byte *) x_symp->st_name);
+ if (strx >= str_secsize)
+ continue;
+ name = str_secptr + strx;
+ if (*name == '\0' || *name == '.')
+ continue;
+
+ sym_value = bfd_h_get_64 (abfd, (bfd_byte *) x_symp->st_value);
+ sym_info = bfd_h_get_8 (abfd, (bfd_byte *) x_symp->st_info);
+ sym_shndx = bfd_h_get_16 (abfd, (bfd_byte *) x_symp->st_shndx);
+ isglobal = (ELF_ST_BIND (sym_info) == STB_GLOBAL);
+
+ if (sym_shndx == SHN_UNDEF)
+ {
+ /* Handle undefined functions which are defined in a shared
+ library. */
+ if (ELF_ST_TYPE (sym_info) != STT_FUNC
+ || ELF_ST_BIND (sym_info) != STB_GLOBAL)
+ continue;
+
+ ms_type = mst_solib_trampoline;
+
+ /* If sym_value is nonzero, it points to the shared library
+ trampoline entry, which is what we are looking for.
+
+ If sym_value is zero, then we have to get the GOT entry
+ for the symbol.
+ If the GOT entry is nonzero, it represents the quickstart
+ address of the function and we use that as the symbol value.
+
+ If the GOT entry is zero, the function address has to be resolved
+ by the runtime loader before the executable is started.
+ We are unable to find any meaningful address for these
+ functions in the executable file, so we skip them. */
+ if (sym_value == 0)
+ {
+ int got_entry_offset =
+ (i - dt_mips_gotsym + dt_mips_local_gotno) * got_entry_size;
+
+ if (got_entry_offset < 0 || got_entry_offset >= got_secsize)
+ continue;
+ sym_value =
+ bfd_h_get_64 (abfd,
+ (bfd_byte *) (got_secptr + got_entry_offset));
+ if (sym_value == 0)
+ continue;
}
- st = end_symtab (pst->texthigh, 0, 0, pst->objfile);
}
- else {
- /* BOUND is the highest core address of this file's procedures */
- int bound = cur_fd == cur_hdr->ifdMax - 1 ? cur_hdr->cbDnOffset
- : fh[1].adr;
- for (cur_sdx = 0; cur_sdx < fh->csym; ) {
- sh = (SYMR *) (fh->isymBase) + cur_sdx;
- cur_sdx += parse_symbol(sh, fh->iauxBase);
+ else
+ {
+ /* Symbols defined in the executable itself. We only care about
+ them if this is a stripped executable, otherwise they have
+ been retrieved from the normal symbol table already. */
+ if (!stripped)
+ continue;
+
+ if (sym_shndx == SHN_MIPS_TEXT)
+ {
+ if (isglobal)
+ ms_type = mst_text;
+ else
+ ms_type = mst_file_text;
+ sym_value += ANOFFSET (section_offsets, SECT_OFF_TEXT);
}
-
- /* Procedures next, note we need to look-ahead to
- find out where the procedure's code ends */
-
- for (i = 0; i < fh->cpd-1; i++) {
- pr = (PDR *) (IPDFIRST(cur_hdr, fh)) + i;
- parse_procedure(pr, pr[1].adr); /* next proc up */
+ else if (sym_shndx == SHN_MIPS_DATA)
+ {
+ if (isglobal)
+ ms_type = mst_data;
+ else
+ ms_type = mst_file_data;
+ sym_value += ANOFFSET (section_offsets, SECT_OFF_DATA);
}
- if (fh->cpd) {
- pr = (PDR *) (IPDFIRST(cur_hdr, fh)) + i;
- parse_procedure(pr, bound); /* next file up */
+ else if (sym_shndx == SHN_MIPS_ACOMMON)
+ {
+ if (isglobal)
+ ms_type = mst_bss;
+ else
+ ms_type = mst_file_bss;
+ sym_value += ANOFFSET (section_offsets, SECT_OFF_BSS);
+ }
+ else if (sym_shndx == SHN_ABS)
+ {
+ ms_type = mst_abs;
+ }
+ else
+ {
+ continue;
}
- /* Linenumbers. At the end, check if we can save memory */
- parse_lines(fh, lines);
- if (lines->nitems < fh->cline)
- lines = shrink_linetable(lines);
}
+ prim_record_minimal_symbol (obsavestring (name,
+ strlen (name),
+ &objfile -> symbol_obstack),
+ sym_value,
+ ms_type,
+ objfile);
}
- if (!have_stabs) {
- EXTR **ext_ptr;
- LINETABLE(st) = 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? */
- /* parse_external clobbers top_stack->cur_block and ->cur_st here. */
- top_stack->blocktype = stFile;
- top_stack->maxsyms =
- cur_hdr->isymMax + cur_hdr->ipdMax + cur_hdr->iextMax;
-
- ext_ptr = PST_PRIVATE(pst)->extern_tab;
- for (i = PST_PRIVATE(pst)->extern_count; --i >= 0; ext_ptr++)
- parse_external(*ext_ptr, 1);
-
- /* If there are undefined, tell the user */
- if (n_undef_symbols) {
- printf_filtered("File %s contains %d unresolved references:",
- st->filename, n_undef_symbols);
- printf_filtered("\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 the symbol table now, we are done adding symbols to it.*/
- sort_symtab_syms(st);
-
- sort_blocks (st);
-
- /* Now link the psymtab and the symtab. */
- pst->symtab = st;
-}
-\f
-/* Ancillary parsing procedures. */
-
-/* Lookup the type at relative index RN. Return it in TPP
- if found and in any event come up with its name PNAME.
- Return value says how many aux symbols we ate */
-
-static
-cross_ref(rn, tpp, type_code, pname)
- RNDXR *rn;
- struct type **tpp;
- int type_code; /* Use to alloc new type if none is found. */
- char **pname;
-{
- unsigned rf;
-
- /* Escape index means 'the next one' */
- if (rn->rfd == 0xfff)
- rf = *(unsigned *) (rn + 1);
- else
- rf = rn->rfd;
-
- if (rf == -1) {
- /* Ooops */
- *pname = "<undefined>";
- } else {
- /*
- * Find the relative file descriptor and the symbol in it
- */
- FDR *fh = get_rfd(cur_fd, rf);
- SYMR *sh;
- struct type *t;
-
- /*
- * If we have processed this symbol then we left a forwarding
- * pointer to the corresponding GDB symbol. If not, we`ll put
- * it in a list of pending symbols, to be processed later when
- * the file f will be. In any event, we collect the name for
- * the type here. Which is why we made a first pass at
- * strings.
- */
- sh = (SYMR *) (fh->isymBase) + rn->index;
-
- /* Careful, we might be looking at .o files */
- *pname = (UNSAFE_DATA_ADDR(sh->iss)) ? "<undefined>" :
- (char *) sh->iss;
-
- /* Have we parsed it ? */
- if ((!UNSAFE_DATA_ADDR(sh->value)) && (sh->st == stParsed)) {
- t = (struct type *) sh->value;
- *tpp = t;
- } else {
- /* Avoid duplicates */
- struct mips_pending *p = is_pending_symbol(fh, sh);
- if (p)
- *tpp = p->t;
- else {
- *tpp = make_type(type_code, 0, 0, 0);
- add_pending(fh, sh, *tpp);
- }
- }
- }
-
- /* We used one auxent normally, two if we got a "next one" rf. */
- return (rn->rfd == 0xfff? 2: 1);
-}
-
-
-/* Quick&dirty lookup procedure, to avoid the MI ones that require
- keeping the symtab sorted */
-
-static struct symbol *
-mylookup_symbol (name, block, namespace, class)
- char *name;
- register struct block *block;
- enum namespace namespace;
- enum address_class class;
-{
- register int bot, top, inc;
- register struct symbol *sym;
-
- bot = 0;
- top = BLOCK_NSYMS(block);
- inc = name[0];
- while (bot < top) {
- sym = BLOCK_SYM(block, bot);
- if (SYMBOL_NAME(sym)[0] == inc
- && SYMBOL_NAMESPACE(sym) == namespace
- && SYMBOL_CLASS(sym) == class
- && !strcmp(SYMBOL_NAME(sym), name))
- return sym;
- bot++;
- }
- if (block = BLOCK_SUPERBLOCK (block))
- return mylookup_symbol (name, block, namespace, class);
- return 0;
-}
-
-
-/* Add a new symbol S to a block B.
- Infrequently, we will need to reallocate the block to make it bigger.
- We only detect this case when adding to top_stack->cur_block, since
- that's the only time we know how big the block is. FIXME. */
-
-static void
-add_symbol(s,b)
- struct symbol *s;
- struct block *b;
-{
- int nsyms = BLOCK_NSYMS(b)++;
- struct block *origb;
- struct parse_stack *stackp;
-
- if (b == top_stack->cur_block &&
- nsyms >= top_stack->maxsyms) {
- complain (&block_overflow_complaint, s->name);
- /* In this case shrink_block is actually grow_block, since
- BLOCK_NSYMS(b) is larger than its current size. */
- origb = b;
- b = shrink_block (top_stack->cur_block, top_stack->cur_st);
-
- /* Now run through the stack replacing pointers to the
- original block. shrink_block has already done this
- for the blockvector and BLOCK_FUNCTION. */
- for (stackp = top_stack; stackp; stackp = stackp->next) {
- if (stackp->cur_block == origb) {
- stackp->cur_block = b;
- stackp->maxsyms = BLOCK_NSYMS (b);
- }
- }
- }
- BLOCK_SYM(b,nsyms) = s;
-}
-
-/* Add a new block B to a symtab S */
-
-static void
-add_block(b,s)
- struct block *b;
- struct symtab *s;
-{
- struct blockvector *bv = BLOCKVECTOR(s);
-
- bv = (struct blockvector *)xrealloc(bv, sizeof(struct blockvector) +
- BLOCKVECTOR_NBLOCKS(bv) * sizeof(bv->block));
- if (bv != BLOCKVECTOR(s))
- BLOCKVECTOR(s) = bv;
-
- BLOCKVECTOR_BLOCK(bv, BLOCKVECTOR_NBLOCKS(bv)++) = b;
-}
-
-/* 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 */
-
-static int
-add_line(lt, lineno, adr, last)
- struct linetable *lt;
- int lineno;
- CORE_ADDR adr;
- int last;
-{
- 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++].pc = adr << 2;
- return lineno;
-}
-
-
-\f
-/* Comparison functions, used when sorting things */
-
-/* Symtabs must be ordered viz the code segments they cover */
-
-static int
-compare_symtabs( s1, s2)
- struct symtab **s1, **s2;
-{
- /* "most specific" first */
-
- register struct block *b1, *b2;
- b1 = BLOCKVECTOR_BLOCK(BLOCKVECTOR(*s1),GLOBAL_BLOCK);
- b2 = BLOCKVECTOR_BLOCK(BLOCKVECTOR(*s2),GLOBAL_BLOCK);
- if (BLOCK_END(b1) == BLOCK_END(b2))
- return BLOCK_START(b1) - BLOCK_START(b2);
- return BLOCK_END(b1) - BLOCK_END(b2);
-}
-
-
-/* Partial Symtabs, same */
-
-static int
-compare_psymtabs( s1, s2)
- struct partial_symtab **s1, **s2;
-{
- /* Perf twist: put the ones with no code at the end */
-
- register int a = (*s1)->textlow;
- register int b = (*s2)->textlow;
- if (a == 0)
- return b;
- if (b == 0)
- return -a;
- return a - b;
-}
-
-
-/* Blocks with a smaller low bound should come first */
-
-static int compare_blocks(b1,b2)
- struct block **b1, **b2;
-{
- register int addr_diff;
-
- addr_diff = (BLOCK_START((*b1))) - (BLOCK_START((*b2)));
- if (addr_diff == 0)
- return (BLOCK_END((*b1))) - (BLOCK_END((*b2)));
- return addr_diff;
-}
-
-\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(s)
- struct symtab *s;
-{
- struct blockvector *bv = BLOCKVECTOR(s);
-
- if (BLOCKVECTOR_NBLOCKS(bv) <= 2) {
- /* Cosmetic */
- if (BLOCK_END(BLOCKVECTOR_BLOCK(bv,GLOBAL_BLOCK)) == 0)
- BLOCK_START(BLOCKVECTOR_BLOCK(bv,GLOBAL_BLOCK)) = 0;
- if (BLOCK_END(BLOCKVECTOR_BLOCK(bv,STATIC_BLOCK)) == 0)
- BLOCK_START(BLOCKVECTOR_BLOCK(bv,STATIC_BLOCK)) = 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 (BLOCKVECTOR_NBLOCKS(bv) > 3)
- qsort(&BLOCKVECTOR_BLOCK(bv,FIRST_LOCAL_BLOCK),
- BLOCKVECTOR_NBLOCKS(bv) - FIRST_LOCAL_BLOCK,
- sizeof(struct block *),
- compare_blocks);
-
- {
- register CORE_ADDR high = 0;
- register int i, j = BLOCKVECTOR_NBLOCKS(bv);
-
- for (i = FIRST_LOCAL_BLOCK; i < j; i++)
- if (high < BLOCK_END(BLOCKVECTOR_BLOCK(bv,i)))
- high = BLOCK_END(BLOCKVECTOR_BLOCK(bv,i));
- BLOCK_END(BLOCKVECTOR_BLOCK(bv,GLOBAL_BLOCK)) = high;
- }
-
- BLOCK_START(BLOCKVECTOR_BLOCK(bv,GLOBAL_BLOCK)) =
- BLOCK_START(BLOCKVECTOR_BLOCK(bv,FIRST_LOCAL_BLOCK));
-
- BLOCK_START(BLOCKVECTOR_BLOCK(bv,STATIC_BLOCK)) =
- BLOCK_START(BLOCKVECTOR_BLOCK(bv,GLOBAL_BLOCK));
- BLOCK_END (BLOCKVECTOR_BLOCK(bv,STATIC_BLOCK)) =
- BLOCK_END (BLOCKVECTOR_BLOCK(bv,GLOBAL_BLOCK));
-}
-
-\f
-/* Constructor/restructor/destructor procedures */
-
-/* Allocate a new symtab for NAME. Needs an estimate of how many symbols
- MAXSYMS and linenumbers MAXLINES we'll put in it */
-
-static
-struct symtab *
-new_symtab(name, maxsyms, maxlines, objfile)
- char *name;
-{
- struct symtab *s = allocate_symtab (name, objfile);
-
- LINETABLE(s) = new_linetable(maxlines);
-
- /* All symtabs must have at least two blocks */
- BLOCKVECTOR(s) = new_bvect(2);
- BLOCKVECTOR_BLOCK(BLOCKVECTOR(s), GLOBAL_BLOCK) = new_block(maxsyms);
- BLOCKVECTOR_BLOCK(BLOCKVECTOR(s), STATIC_BLOCK) = new_block(maxsyms);
- BLOCK_SUPERBLOCK( BLOCKVECTOR_BLOCK(BLOCKVECTOR(s),STATIC_BLOCK)) =
- BLOCKVECTOR_BLOCK(BLOCKVECTOR(s), GLOBAL_BLOCK);
-
- s->free_code = free_linetable;
-
- /* Link the new symtab into the list of such. */
- s->next = symtab_list;
- symtab_list = s;
-
- return s;
-}
-
-/* Allocate a new partial_symtab NAME */
-
-static struct partial_symtab *
-new_psymtab(name, objfile)
- char *name;
- struct objfile *objfile;
-{
- struct partial_symtab *pst;
-
- pst = (struct partial_symtab *)
- obstack_alloc (psymbol_obstack, sizeof (*pst));
- memset (pst, 0, sizeof (*pst));
-
- if (name == (char*)-1) /* FIXME -- why not null here? */
- pst->filename = "<no name>";
- else
- pst->filename = name;
-
- /* Chain it to its object file */
- pst->objfile = objfile;
- pst->objfile_chain = objfile->psymtabs;
- objfile->psymtabs = pst;
-
- pst->next = partial_symtab_list;
- partial_symtab_list = pst;
-
- /* Keep a backpointer to the file's symbols */
- pst->read_symtab_private = (char *) obstack_alloc (psymbol_obstack,
- sizeof (struct symloc));
- CUR_HDR(pst) = cur_hdr;
-
- /* The way to turn this into a symtab is to call... */
- pst->read_symtab = mipscoff_psymtab_to_symtab;
-
- return pst;
-}
-
-
-/* Allocate a linetable array of the given SIZE */
-
-static struct linetable *
-new_linetable(size)
-{
- struct linetable *l;
-
- 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 */
-
-static struct linetable *
-shrink_linetable(lt)
- struct linetable * lt;
-{
- struct linetable *l = new_linetable(lt->nitems);
-
- memcpy(l, lt, lt->nitems * sizeof(l->item) + sizeof(struct linetable));
- free (lt);
- return l;
-}
-
-/* Allocate and zero a new blockvector of NBLOCKS blocks. */
-
-static
-struct blockvector *
-new_bvect(nblocks)
-{
- struct blockvector *bv;
- int size;
-
- size = sizeof(struct blockvector) + nblocks * sizeof(struct block*);
- bv = (struct blockvector *) xzalloc(size);
-
- BLOCKVECTOR_NBLOCKS(bv) = nblocks;
-
- return bv;
-}
-
-/* Allocate and zero a new block of MAXSYMS symbols */
-
-static
-struct block *
-new_block(maxsyms)
-{
- int size = sizeof(struct block) + (maxsyms-1) * sizeof(struct symbol *);
- struct block *b = (struct block *)xzalloc(size);
-
- return b;
}
-/* Ooops, too big. Shrink block B in symtab S to its minimal size.
- Shrink_block can also be used by add_symbol to grow a block. */
-
-static struct block *
-shrink_block(b, s)
- struct block *b;
- struct symtab *s;
-{
- struct block *new;
- struct blockvector *bv = BLOCKVECTOR(s);
- int i;
-
- /* Just reallocate it and fix references to the old one */
-
- new = (struct block *) xrealloc ((char *)b, sizeof(struct block) +
- (BLOCK_NSYMS(b)-1) * sizeof(struct symbol *));
-
- /* Should chase pointers to old one. Fortunately, that`s just
- the block`s function and inferior blocks */
- if (BLOCK_FUNCTION(new) && SYMBOL_BLOCK_VALUE(BLOCK_FUNCTION(new)) == b)
- SYMBOL_BLOCK_VALUE(BLOCK_FUNCTION(new)) = new;
- for (i = 0; i < BLOCKVECTOR_NBLOCKS(bv); i++)
- if (BLOCKVECTOR_BLOCK(bv,i) == b)
- BLOCKVECTOR_BLOCK(bv,i) = new;
- else if (BLOCK_SUPERBLOCK(BLOCKVECTOR_BLOCK(bv,i)) == b)
- BLOCK_SUPERBLOCK(BLOCKVECTOR_BLOCK(bv,i)) = new;
- return new;
-}
-
-/* Create a new symbol with printname NAME */
-
-static
-struct symbol *
-new_symbol(name)
- char *name;
-{
- struct symbol *s = (struct symbol *)
- obstack_alloc (symbol_obstack, sizeof (struct symbol));
-
- memset (s, 0, sizeof (*s));
- SYMBOL_NAME(s) = name;
- return s;
-}
-
-/* Create a new type with printname NAME */
-
-static
-struct type *
-new_type(name)
- char *name;
-{
- struct type *t = (struct type *)
- obstack_alloc (symbol_obstack, sizeof (struct type));
-
- memset (t, 0, sizeof (*t));
- TYPE_VPTR_FIELDNO (t) = -1;
- TYPE_NAME(t) = name;
- TYPE_CPLUS_SPECIFIC(t) = &cplus_struct_default;
- return t;
-}
-
-/* Create and initialize a new type with printname NAME.
- CODE and LENGTH are the initial info we put in,
- UNS says whether the type is unsigned or not. */
-
-static
-struct type *
-make_type(code, length, uns, name)
- enum type_code code;
- int length, uns;
- char *name;
-{
- register struct type *type;
-
- /* FIXME, I don't think this ever gets freed. */
- type = (struct type *) xzalloc(sizeof(struct type));
- TYPE_CODE(type) = code;
- TYPE_LENGTH(type) = length;
- TYPE_FLAGS(type) = uns ? TYPE_FLAG_UNSIGNED : 0;
- TYPE_NAME(type) = name;
- TYPE_VPTR_FIELDNO (type) = -1;
-
- if (code != TYPE_CODE_METHOD && code != TYPE_CODE_FUNC)
- TYPE_CPLUS_SPECIFIC(type) = &cplus_struct_default;
- return type;
-}
-\f
-/* Things used for calling functions in the inferior.
- These functions are exported to our companion
- mips-tdep.c file and are here because they play
- with the symbol-table explicitly. */
-
-/* Sigtramp: make sure we have all the necessary information
- about the signal trampoline code. Since the official code
- from MIPS does not do so, we make up that information ourselves.
- If they fix the library (unlikely) this code will neutralize itself. */
-
-static
-fixup_sigtramp()
-{
- struct symbol *s;
- struct symtab *st;
- struct block *b, *b0;
-
- sigtramp_address = -1;
-
- /* We know it is sold as sigvec */
- s = lookup_symbol("sigvec", 0, VAR_NAMESPACE, 0, NULL);
-
- /* Most programs do not play with signals */
- if (s == 0)
- return;
-
- b0 = SYMBOL_BLOCK_VALUE(s);
-
- /* A label of sigvec, to be more precise */
- s = lookup_symbol("sigtramp", b0, VAR_NAMESPACE, 0, NULL);
-
- /* But maybe this program uses its own version of sigvec */
- if (s == 0)
- return;
-
- sigtramp_address = SYMBOL_VALUE(s);
- sigtramp_end = sigtramp_address + 0x88; /* black magic */
-
- /* Did we or MIPSco fix the library ? */
- if (SYMBOL_CLASS(s) == LOC_BLOCK)
- return;
-
- /* But what symtab does it live in ? */
- st = find_pc_symtab(SYMBOL_VALUE(s));
-
- /*
- * Ok, there goes the fix: turn it into a procedure, with all the
- * needed info. Note we make it a nested procedure of sigvec,
- * which is the way the (assembly) code is actually written.
- */
- SYMBOL_NAMESPACE(s) = VAR_NAMESPACE;
- SYMBOL_CLASS(s) = LOC_BLOCK;
- SYMBOL_TYPE(s) = make_type(TYPE_CODE_FUNC, 4, 0, 0);
- TYPE_TARGET_TYPE(SYMBOL_TYPE(s)) = builtin_type_void;
-
- /* Need a block to allocate .gdbinfo. in */
- b = new_block(1);
- SYMBOL_BLOCK_VALUE(s) = b;
- BLOCK_START(b) = sigtramp_address;
- BLOCK_END(b) = sigtramp_end;
- BLOCK_FUNCTION(b) = s;
- BLOCK_SUPERBLOCK(b) = BLOCK_SUPERBLOCK(b0);
- add_block(b, st);
- sort_blocks(st);
-
- /* Make a .gdbinfo. for it */
- {
- struct mips_extra_func_info *e =
- (struct mips_extra_func_info *)
- xzalloc(sizeof(struct mips_extra_func_info));
-
- e->numargs = 0; /* the kernel thinks otherwise */
- /* align_longword(sigcontext + SIGFRAME) */
- e->framesize = 0x150;
- e->framereg = SP_REGNUM;
- e->pcreg = 31;
- e->regmask = -2;
- e->regoffset = -(41 * sizeof(int));
- e->fregmask = -1;
- e->fregoffset = -(37 * sizeof(int));
- e->isym = (long)s;
-
- s = new_symbol(".gdbinfo.");
- SYMBOL_VALUE(s) = (int) e;
- SYMBOL_NAMESPACE(s) = LABEL_NAMESPACE;
- SYMBOL_CLASS(s) = LOC_CONST;
- SYMBOL_TYPE(s) = builtin_type_void;
- }
-
- BLOCK_SYM(b,BLOCK_NSYMS(b)++) = s;
-}
-\f
/* Initialization */
-static struct sym_fns ecoff_sym_fns = {"ecoff", 5,
- mipscoff_new_init, mipscoff_symfile_init,
- mipscoff_symfile_read};
+static struct sym_fns ecoff_sym_fns =
+{
+ bfd_target_ecoff_flavour,
+ mipscoff_new_init, /* sym_new_init: init anything gbl to entire symtab */
+ mipscoff_symfile_init, /* sym_init: read initial info, setup for sym_read() */
+ mipscoff_symfile_read, /* sym_read: read a symbol file into symtab */
+ mipscoff_symfile_finish, /* sym_finish: finished with file, cleanup */
+ mipscoff_symfile_offsets, /* sym_offsets: dummy FIXME til implem sym reloc */
+ NULL /* next: pointer to next struct sym_fns */
+};
+void
_initialize_mipsread ()
{
- add_symtab_fns (&ecoff_sym_fns);
-
- /* Missing basic types */
- builtin_type_string = make_type(TYPE_CODE_PASCAL_ARRAY,
- 1, 0, "string");
- builtin_type_complex = make_type(TYPE_CODE_FLT,
- 2 * sizeof(float), 0, "complex");
- builtin_type_double_complex = make_type(TYPE_CODE_FLT,
- 2 * sizeof(double), 0, "double_complex");
- builtin_type_fixed_dec = make_type(TYPE_CODE_INT, sizeof(int),
- 0, "fixed_decimal");
- builtin_type_float_dec = make_type(TYPE_CODE_FLT, sizeof(double),
- 0, "floating_decimal");
+ add_symtab_fns (&ecoff_sym_fns);
}
projects / binutils.git / blobdiff