/* Read dbx symbol tables and convert to internal format, for GDB.
- Copyright (C) 1986-1991 Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991 Free Software Foundation, Inc.
This file is part of GDB.
{
/* N_CATCH is not fixed up by the linker, and unfortunately,
there's no other place to put it in the .stab map. */
- bufp->n_value += text_offset + offset;
+ bufp->n_value += text_offset - offset;
}
- else {
- type &= ~N_EXT; /* Ignore external-bit */
- if (type == N_TEXT || type == N_DATA || type == N_BSS)
- bufp->n_value += offset;
- type = bufp->n_type;
- }
SET_NAMESTRING ();
if (type & N_STAB) {
- process_one_symbol (type, bufp->n_desc, bufp->n_value, namestring);
- /* our_objfile is an implicit parameter. */
-
+ process_one_symbol (type, bufp->n_desc, bufp->n_value,
+ namestring, offset);
+ /* our_objfile is an implicit parameter. */
}
/* We skip checking for a new .o or -l file; that should never
happen in this routine. */
if (total < 0) total += (1000 << 6);
return total % HASHSIZE;
}
-
\f
+/* This handles a single symbol from the symbol-file, building symbols
+ into a GDB symtab. It takes these arguments and an implicit argument.
+
+ TYPE is the type field of the ".stab" symbol entry.
+ DESC is the desc field of the ".stab" entry.
+ VALU is the value field of the ".stab" entry.
+ NAME is the symbol name, in our address space.
+ OFFSET is the amount by which this object file was relocated
+ when it was loaded into memory. All symbols that refer
+ to memory locations need to be offset by this amount.
+
+ The implicit argument is:
+ OUR_OBJFILE is the object file from which we are reading symbols.
+ It is used in end_symtab. */
+
void
-process_one_symbol (type, desc, valu, name)
+process_one_symbol (type, desc, valu, name, offset)
int type, desc;
CORE_ADDR valu;
char *name;
+ int offset;
{
#ifndef SUN_FIXED_LBRAC_BUG
/* This records the last pc address we've seen. We depend on there being
case N_STSYM:
#endif /* 0 */
+ valu += offset; /* Relocate for dynamic loading */
+
/* Either of these types of symbols indicates the start of
a new function. We must process its "name" normally for dbx,
but also record the start of a new lexical context, and possibly
case N_CATCH:
/* Record the address at which this catch takes place. */
- define_symbol (valu, name, desc, type);
- break;
-
- case N_EHDECL:
- /* Don't know what to do with these yet. */
- error ("action uncertain for eh extensions");
+ define_symbol (valu+offset, name, desc, type);
break;
case N_LBRAC:
/* This "symbol" just indicates the start of an inner lexical
context within a function. */
-#if !defined (BLOCK_ADDRESS_ABSOLUTE)
+#if defined (BLOCK_ADDRESS_ABSOLUTE)
+ valu += offset; /* Relocate for dynamic loading */
+#else
/* On most machines, the block addresses are relative to the
N_SO, the linker did not relocate them (sigh). */
valu += last_source_start_addr;
/* This "symbol" just indicates the end of an inner lexical
context that was started with N_LBRAC. */
-#if !defined (BLOCK_ADDRESS_ABSOLUTE)
+#if defined (BLOCK_ADDRESS_ABSOLUTE)
+ valu += offset; /* Relocate for dynamic loading */
+#else
/* On most machines, the block addresses are relative to the
N_SO, the linker did not relocate them (sigh). */
valu += last_source_start_addr;
case N_FN:
case N_FN_SEQ:
/* This kind of symbol indicates the start of an object file. */
+ valu += offset; /* Relocate for dynamic loading */
break;
case N_SO:
for one source file.
Finish the symbol table of the previous source file
(if any) and start accumulating a new symbol table. */
+ valu += offset; /* Relocate for dynamic loading */
+
#ifndef SUN_FIXED_LBRAC_BUG
last_pc_address = valu; /* Save for SunOS bug circumcision */
#endif
start_symtab (name, NULL, valu);
break;
+
case N_SOL:
/* This type of symbol indicates the start of data for
a sub-source-file, one whose contents were copied or
included in the compilation of the main source file
(whose name was given in the N_SO symbol.) */
+ valu += offset; /* Relocate for dynamic loading */
start_subfile (name, NULL);
break;
/* This type of "symbol" really just records
one line-number -- core-address correspondence.
Enter it in the line list for this symbol table. */
+ valu += offset; /* Relocate for dynamic loading */
#ifndef SUN_FIXED_LBRAC_BUG
last_pc_address = valu; /* Save for SunOS bug circumcision */
#endif
break;
}
- case N_ECOML:
- case N_LENG:
- case N_DEFD: /* GNU Modula-2 symbol */
+ /* The following symbol types need to have the offset added to their
+ value; then we process symbol definitions in the name. */
+ case N_STSYM: /* Global symbol */
+ case N_LCSYM: /* Local symbol */
+ case N_DSLINE: /* Source line number, data seg */
+ case N_BSLINE: /* Source line number, bss seg */
+ /* N_BROWS: overlaps with N_BSLINE */
+ case N_ENTRY: /* Alternate entry point */
+ valu += offset; /* Relocate for dynamic loading */
+ /* FALL THROUGH */
+
+ /* The following symbol types don't need the address field relocated,
+ since it is either unused, or is absolute. */
+ case N_GSYM: /* Global variable */
+ case N_NSYMS: /* Number of symbols (ultrix) */
+ case N_NOMAP: /* No map? (ultrix) */
+ case N_RSYM: /* Register variable */
+ case N_DEFD: /* Modula-2 GNU module dependency */
+ case N_SSYM: /* Struct or union element */
+ case N_LSYM: /* Local symbol in stack */
+ case N_PSYM: /* Parameter variable */
+ case N_LENG: /* Length of preceding symbol type */
+ if (name)
+ define_symbol (valu, name, desc, type);
break;
+ /* The following symbol types we don't know how to process. Handle
+ them in a "default" way, but complain to people who care. */
default:
+ case N_EHDECL: /* Exception handler name */
+ case N_MAIN: /* Name of main routine (not used in C) */
+ case N_PC: /* Global symbol in Pascal */
+ case N_M2C: /* Modula-2 compilation unit */
+ /* N_MOD2: overlaps with N_EHDECL */
+ case N_SCOPE: /* Modula-2 scope information */
+ case N_ECOML: /* End common (local name) */
+ case N_NBTEXT: /* Gould Non-Base-Register symbols??? */
+ case N_NBDATA:
+ case N_NBBSS:
+ case N_NBSTS:
+ case N_NBLCS:
+ complain (&unknown_symtype_complaint, local_hex_string(type));
if (name)
define_symbol (valu, name, desc, type);
}
projects / deliverable / binutils-gdb.git / blobdiff