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* buildsym.c (end_symtab): Remove sort_pending and sort_linevec

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arguments.  Sorting is now dependent on OBJF_REORDERED.  All
        callers/references changed.
        * dbxread.c (read_ofile_symtab): Correctly determine value for
        last_source_start_addr for reordered executables.
        (process_one_symbol): Handle N_FUN with no name as an end of
        function marker.
        * partial-stab.h (case N_FN, N_TEXT): Don't assume CUR_SYMBOL_VALUE
        is the high text address for a psymtab.
        (case N_SO): Likewise.
        (case N_FUN): Handle N_FUN with no name as an end of function
        marker.
        * minsyms.c (lookup_minimal_symbol_by_pc): Examine all symbols
        at the same address rather than a random subset of them.
        * coffread.c (coff_symfile_init): Set OBJF_REORDERED.
        * elfread.c (elf_symfile_init): Similarly.
        * somread.c (som_symfile_init): Similarly.
        * xcoffread.c (xcoff_symfile_init): Similarly.

Support for debugging reordered executables.  Remaining mentor vm
changes.
This commit is contained in:
Jeff Law
1996-01-08 17:55:25 +00:00
parent 01082eaf19
commit 436d414327
12 changed files with 120 additions and 46 deletions
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44
gdb/partial-stab.h
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@@ -1,5 +1,5 @@
/* Shared code to pre-read a stab (dbx-style), when building a psymtab.
Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995
Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
Free Software Foundation, Inc.
This file is part of GDB.
@@ -103,7 +103,9 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
&& CUR_SYMBOL_VALUE >= pst->textlow)
{
END_PSYMTAB (pst, psymtab_include_list, includes_used,
symnum * symbol_size, CUR_SYMBOL_VALUE,
symnum * symbol_size,
CUR_SYMBOL_VALUE > pst->texthigh
? CUR_SYMBOL_VALUE : pst->texthigh,
dependency_list, dependencies_used);
pst = (struct partial_symtab *) 0;
includes_used = 0;
@@ -214,7 +216,8 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
if (pst)
{
END_PSYMTAB (pst, psymtab_include_list, includes_used,
symnum * symbol_size, valu,
symnum * symbol_size,
valu > pst->texthigh ? valu : pst->texthigh,
dependency_list, dependencies_used);
pst = (struct partial_symtab *) 0;
includes_used = 0;
@@ -365,6 +368,22 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
SET_NAMESTRING();
#ifdef DBXREAD_ONLY
/* See if this is an end of function stab. */
if (CUR_SYMBOL_TYPE == N_FUN && ! strcmp (namestring, ""))
{
unsigned long valu;
/* It's value is the size (in bytes) of the function for
function relative stabs, or the address of the function's
end for old style stabs. */
valu = CUR_SYMBOL_VALUE + last_function_start;
if (pst->texthigh == 0 || valu > pst->texthigh)
pst->texthigh = valu;
break;
}
#endif
p = (char *) strchr (namestring, ':');
if (!p)
continue; /* Not a debugging symbol. */
@@ -527,6 +546,9 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
case 'f':
CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_TEXT);
#ifdef DBXREAD_ONLY
/* Keep track of the start of the last function so we
can handle end of function symbols. */
last_function_start = CUR_SYMBOL_VALUE;
/* Kludges for ELF/STABS with Sun ACC */
last_function_name = namestring;
#ifdef SOFUN_ADDRESS_MAYBE_MISSING
@@ -541,6 +563,13 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
startup_file_end = CUR_SYMBOL_VALUE;
#endif
/* End kludge. */
/* In reordered executables this function may lie outside
the bounds created by N_SO symbols. If that's the case
use the address of this function as the low bound for
the partial symbol table. */
if (pst->textlow == 0 || CUR_SYMBOL_VALUE < pst->textlow)
pst->textlow = CUR_SYMBOL_VALUE;
#endif /* DBXREAD_ONLY */
ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
VAR_NAMESPACE, LOC_BLOCK,
@@ -554,6 +583,9 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
case 'F':
CUR_SYMBOL_VALUE += ANOFFSET (section_offsets, SECT_OFF_TEXT);
#ifdef DBXREAD_ONLY
/* Keep track of the start of the last function so we
can handle end of function symbols. */
last_function_start = CUR_SYMBOL_VALUE;
/* Kludges for ELF/STABS with Sun ACC */
last_function_name = namestring;
#ifdef SOFUN_ADDRESS_MAYBE_MISSING
@@ -568,6 +600,12 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
startup_file_end = CUR_SYMBOL_VALUE;
#endif
/* End kludge. */
/* In reordered executables this function may lie outside
the bounds created by N_SO symbols. If that's the case
use the address of this function as the low bound for
the partial symbol table. */
if (pst->textlow == 0 || CUR_SYMBOL_VALUE < pst->textlow)
pst->textlow = CUR_SYMBOL_VALUE;
#endif /* DBXREAD_ONLY */
ADD_PSYMBOL_TO_LIST (namestring, p - namestring,
VAR_NAMESPACE, LOC_BLOCK,