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.
- SECTION_OFFSETS is a set of amounts by which the sections of this object
- file were relocated when it was loaded into memory.
- Note that these section_offsets are not the
- objfile->section_offsets but the pst->section_offsets.
- All symbols that refer
- to memory locations need to be offset by these amounts.
- OBJFILE is the object file from which we are reading symbols.
- It is used in end_symtab. */
+ SECTION_OFFSETS is a set of amounts by which the sections of this
+ object file were relocated when it was loaded into memory. Note
+ that these section_offsets are not the objfile->section_offsets but
+ the pst->section_offsets. All symbols that refer to memory
+ locations need to be offset by these amounts.
+ OBJFILE is the object file from which we are reading symbols. It
+ is used in end_symtab. */
void
process_one_symbol (int type, int desc, CORE_ADDR valu, char *name,
struct objfile *objfile)
{
struct context_stack *new;
- /* This remembers the address of the start of a function. It is used
- because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries are
- relative to the current function's start address. On systems
- other than Solaris 2, this just holds the SECT_OFF_TEXT value, and is
- used to relocate these symbol types rather than SECTION_OFFSETS. */
+ /* This remembers the address of the start of a function. It is
+ used because in Solaris 2, N_LBRAC, N_RBRAC, and N_SLINE entries
+ are relative to the current function's start address. On systems
+ other than Solaris 2, this just holds the SECT_OFF_TEXT value,
+ and is used to relocate these symbol types rather than
+ SECTION_OFFSETS. */
static CORE_ADDR function_start_offset;
- /* This holds the address of the start of a function, without the system
- peculiarities of function_start_offset. */
+ /* This holds the address of the start of a function, without the
+ system peculiarities of function_start_offset. */
static CORE_ADDR last_function_start;
/* If this is nonzero, we've seen an N_SLINE since the start of the
value is. */
static int sline_found_in_function = 1;
- /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this source
- file. Used to detect the SunPRO solaris compiler. */
+ /* If this is nonzero, we've seen a non-gcc N_OPT symbol for this
+ source file. Used to detect the SunPRO solaris compiler. */
static int n_opt_found;
/* The stab type used for the definition of the last function.
static int function_stab_type = 0;
if (!block_address_function_relative)
- /* N_LBRAC, N_RBRAC and N_SLINE entries are not relative to the
- function start address, so just use the text offset. */
- function_start_offset = ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
+ {
+ /* N_LBRAC, N_RBRAC and N_SLINE entries are not relative to the
+ function start address, so just use the text offset. */
+ function_start_offset =
+ ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
+ }
- /* Something is wrong if we see real data before
- seeing a source file name. */
+ /* Something is wrong if we see real data before seeing a source
+ file name. */
if (last_source_file == NULL && type != (unsigned char) N_SO)
{
if (*name == '\000')
{
- /* This N_FUN marks the end of a function. This closes off the
- current block. */
+ /* This N_FUN marks the end of a function. This closes off
+ the current block. */
if (context_stack_depth <= 0)
{
/* The following check is added before recording line 0 at
end of function so as to handle hand-generated stabs
- which may have an N_FUN stabs at the end of the function, but
- no N_SLINE stabs. */
+ which may have an N_FUN stabs at the end of the function,
+ but no N_SLINE stabs. */
if (sline_found_in_function)
record_line (current_subfile, 0, last_function_start + valu);
sline_found_in_function = 0;
- /* Relocate for dynamic loading */
+ /* Relocate for dynamic loading. */
valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
valu = SMASH_TEXT_ADDRESS (valu);
last_function_start = valu;
lbrac_mismatch_complaint (symnum);
/* Some compilers put the variable decls inside of an
- LBRAC/RBRAC block. This macro should be nonzero if this
- is true. DESC is N_DESC from the N_RBRAC symbol.
- GCC_P is true if we've detected the GCC_COMPILED_SYMBOL
- or the GCC2_COMPILED_SYMBOL. */
+ LBRAC/RBRAC block. This macro should be nonzero if this is
+ true. DESC is N_DESC from the N_RBRAC symbol. GCC_P is true
+ if we've detected the GCC_COMPILED_SYMBOL or the
+ GCC2_COMPILED_SYMBOL. */
#if !defined (VARIABLES_INSIDE_BLOCK)
#define VARIABLES_INSIDE_BLOCK(desc, gcc_p) 0
#endif
/* Can only use new->locals as local symbols here if we're in
- gcc or on a machine that puts them before the lbrack. */
+ GCC or on a machine that puts them before the lbrack. */
if (!VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation))
{
if (local_symbols != NULL)
symbols within an LBRAC/RBRAC block; this complaint
might also help sort out problems in which
VARIABLES_INSIDE_BLOCK is incorrectly defined. */
- complaint (&symfile_complaints,
- "misplaced N_LBRAC entry; discarding local symbols which have no enclosing block");
+ complaint (&symfile_complaints, "\
+misplaced N_LBRAC entry; discarding local symbols which have \
+no enclosing block");
}
local_symbols = new->locals;
}
if (context_stack_depth
> !VARIABLES_INSIDE_BLOCK (desc, processing_gcc_compilation))
{
- /* This is not the outermost LBRAC...RBRAC pair in the function,
- its local symbols preceded it, and are the ones just recovered
- from the context stack. Define the block for them (but don't
- bother if the block contains no symbols. Should we complain
- on blocks without symbols? I can't think of any useful purpose
- for them). */
+ /* This is not the outermost LBRAC...RBRAC pair in the
+ function, its local symbols preceded it, and are the ones
+ just recovered from the context stack. Define the block
+ for them (but don't bother if the block contains no
+ symbols. Should we complain on blocks without symbols?
+ I can't think of any useful purpose for them). */
if (local_symbols != NULL)
{
- /* Muzzle a compiler bug that makes end < start. (which
- compilers? Is this ever harmful?). */
+ /* Muzzle a compiler bug that makes end < start.
+
+ ??? Which compilers? Is this ever harmful?. */
if (new->start_addr > valu)
{
complaint (&symfile_complaints,
case N_FN:
case N_FN_SEQ:
- /* This kind of symbol indicates the start of an object file. */
- /* Relocate for dynamic loading */
+ /* This kind of symbol indicates the start of an object file.
+ Relocate for dynamic loading. */
valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
break;
case N_SO:
- /* This type of symbol indicates the start of data
- for one source file.
- Finish the symbol table of the previous source file
- (if any) and start accumulating a new symbol table. */
- /* Relocate for dynamic loading */
+ /* This type of symbol indicates the start of data for one
+ source file. Finish the symbol table of the previous source
+ file (if any) and start accumulating a new symbol table.
+ Relocate for dynamic loading. */
valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
n_opt_found = 0;
if (last_source_file)
{
/* Check if previous symbol was also an N_SO (with some
- sanity checks). If so, that one was actually the directory
- name, and the current one is the real file name.
- Patch things up. */
+ sanity checks). If so, that one was actually the
+ directory name, and the current one is the real file
+ name. Patch things up. */
if (previous_stab_code == (unsigned char) N_SO)
{
patch_subfile_names (current_subfile, name);
end_stabs ();
}
- /* Null name means this just marks the end of text for this .o file.
- Don't start a new symtab in this case. */
+ /* Null name means this just marks the end of text for this .o
+ file. Don't start a new symtab in this case. */
if (*name == '\000')
break;
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.) */
- /* Relocate for dynamic loading */
+ /* 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). Relocate for dynamic loading. */
valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
start_subfile (name, current_subfile->dirname);
break;
break;
case N_SLINE:
- /* This type of "symbol" really just records
- one line-number -- core-address correspondence.
- Enter it in the line list for this symbol table. */
+ /* This type of "symbol" really just records one line-number --
+ core-address correspondence. Enter it in the line list for
+ this symbol table. */
- /* Relocate for dynamic loading and for ELF acc fn-relative syms. */
+ /* Relocate for dynamic loading and for ELF acc
+ function-relative symbols. */
valu += function_start_offset;
/* GCC 2.95.3 emits the first N_SLINE stab somwehere in the
common_block_end (objfile);
break;
- /* The following symbol types need to have the appropriate offset added
- to their value; then we process symbol definitions in the name. */
+ /* The following symbol types need to have the appropriate
+ offset added to their value; then we process symbol
+ definitions in the name. */
- case N_STSYM: /* Static symbol in data seg */
- case N_LCSYM: /* Static symbol in BSS seg */
- case N_ROSYM: /* Static symbol in Read-only data seg */
+ case N_STSYM: /* Static symbol in data segment. */
+ case N_LCSYM: /* Static symbol in BSS segment. */
+ case N_ROSYM: /* Static symbol in read-only data segment. */
/* HORRID HACK DEPT. However, it's Sun's furgin' fault.
- Solaris2's stabs-in-elf makes *most* symbols relative
- but leaves a few absolute (at least for Solaris 2.1 and version
- 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on the fence.
- .stab "foo:S...",N_STSYM is absolute (ld relocates it)
- .stab "foo:V...",N_STSYM is relative (section base subtracted).
- This leaves us no choice but to search for the 'S' or 'V'...
- (or pass the whole section_offsets stuff down ONE MORE function
- call level, which we really don't want to do). */
+ Solaris 2's stabs-in-elf makes *most* symbols relative but
+ leaves a few absolute (at least for Solaris 2.1 and version
+ 2.0.1 of the SunPRO compiler). N_STSYM and friends sit on
+ the fence. .stab "foo:S...",N_STSYM is absolute (ld
+ relocates it) .stab "foo:V...",N_STSYM is relative (section
+ base subtracted). This leaves us no choice but to search for
+ the 'S' or 'V'... (or pass the whole section_offsets stuff
+ down ONE MORE function call level, which we really don't want
+ to do). */
{
char *p;
- /* .o files and NLMs have non-zero text seg offsets, but don't need
- their static syms offset in this fashion. XXX - This is really a
- crock that should be fixed in the solib handling code so that I
- don't have to work around it here. */
+ /* Normal object file and NLMs have non-zero text seg offsets,
+ but don't need their static syms offset in this fashion.
+ XXX - This is really a crock that should be fixed in the
+ solib handling code so that I don't have to work around it
+ here. */
if (!symfile_relocatable)
{
if (p != 0 && p[1] == 'S')
{
/* The linker relocated it. We don't want to add an
- elfstab_offset_sections-type offset, but we *do* want
- to add whatever solib.c passed to symbol_file_add as
- addr (this is known to affect SunOS4, and I suspect ELF
- too). Since elfstab_offset_sections currently does not
- muck with the text offset (there is no Ttext.text
+ elfstab_offset_sections-type offset, but we *do*
+ want to add whatever solib.c passed to
+ symbol_file_add as addr (this is known to affect
+ SunOS 4, and I suspect ELF too). Since
+ elfstab_offset_sections currently does not muck
+ with the text offset (there is no Ttext.text
symbol), we can get addr from the text offset. If
- elfstab_offset_sections ever starts dealing with the
- text offset, and we still need to do this, we need to
- invent a SECT_OFF_ADDR_KLUDGE or something. */
+ elfstab_offset_sections ever starts dealing with
+ the text offset, and we still need to do this, we
+ need to invent a SECT_OFF_ADDR_KLUDGE or something. */
valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
goto define_a_symbol;
}
}
- /* Since it's not the kludge case, re-dispatch to the right handler. */
+ /* Since it's not the kludge case, re-dispatch to the right
+ handler. */
switch (type)
{
case N_STSYM:
case N_ROSYM:
goto case_N_ROSYM;
default:
- internal_error (__FILE__, __LINE__, "failed internal consistency check");
+ internal_error (__FILE__, __LINE__,
+ "failed internal consistency check");
}
}
- case_N_STSYM: /* Static symbol in data seg */
- case N_DSLINE: /* Source line number, data seg */
+ case_N_STSYM: /* Static symbol in data segment. */
+ case N_DSLINE: /* Source line number, data segment. */
valu += ANOFFSET (section_offsets, SECT_OFF_DATA (objfile));
goto define_a_symbol;
- case_N_LCSYM: /* Static symbol in BSS seg */
- case N_BSLINE: /* Source line number, bss seg */
- /* N_BROWS: overlaps with N_BSLINE */
+ case_N_LCSYM: /* Static symbol in BSS segment. */
+ case N_BSLINE: /* Source line number, BSS segment. */
+ /* N_BROWS: overlaps with N_BSLINE. */
valu += ANOFFSET (section_offsets, SECT_OFF_BSS (objfile));
goto define_a_symbol;
- case_N_ROSYM: /* Static symbol in Read-only data seg */
+ case_N_ROSYM: /* Static symbol in read-only data segment. */
valu += ANOFFSET (section_offsets, SECT_OFF_RODATA (objfile));
goto define_a_symbol;
- case N_ENTRY: /* Alternate entry point */
- /* Relocate for dynamic loading */
+ case N_ENTRY: /* Alternate entry point. */
+ /* Relocate for dynamic loading. */
valu += ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile));
goto define_a_symbol;
- /* The following symbol types we don't know how to process. Handle
- them in a "default" way, but complain to people who care. */
+ /* 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_CATCH: /* Exception handler catcher */
- case N_EHDECL: /* Exception handler name */
- 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_CATCH: /* Exception handler catcher. */
+ case N_EHDECL: /* Exception handler name. */
+ 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:
unknown_symtype_complaint (hex_string (type));
/* FALLTHROUGH */
- /* The following symbol types don't need the address field relocated,
- since it is either unused, or is absolute. */
+ /* The following symbol types don't need the address field
+ relocated, since it is either unused, or is absolute. */
define_a_symbol:
- 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 */
+ 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)
{
int deftype;
function_stab_type = type;
#ifdef SOFUN_ADDRESS_MAYBE_MISSING
- /* Deal with the SunPRO 3.0 compiler which omits the address
- from N_FUN symbols. */
+ /* Deal with the SunPRO 3.0 compiler which omits the
+ address from N_FUN symbols. */
if (type == N_FUN
- && valu == ANOFFSET (section_offsets, SECT_OFF_TEXT (objfile)))
+ && valu == ANOFFSET (section_offsets,
+ SECT_OFF_TEXT (objfile)))
{
CORE_ADDR minsym_valu =
find_stab_function_addr (name, last_source_file, objfile);
- /* find_stab_function_addr will return 0 if the minimal
- symbol wasn't found. (Unfortunately, this might also
- be a valid address.) Anyway, if it *does* return 0,
- it is likely that the value was set correctly to begin
- with... */
+ /* The function find_stab_function_addr will return
+ 0 if the minimal symbol wasn't found.
+ (Unfortunately, this might also be a valid
+ address.) Anyway, if it *does* return 0, it is
+ likely that the value was set correctly to begin
+ with... */
if (minsym_valu != 0)
valu = minsym_valu;
}
#endif
if (block_address_function_relative)
- /* For Solaris 2.0 compilers, the block addresses and
+ /* For Solaris 2 compilers, the block addresses and
N_SLINE's are relative to the start of the
- function. On normal systems, and when using gcc on
- Solaris 2.0, these addresses are just absolute, or
+ function. On normal systems, and when using GCC on
+ Solaris 2, these addresses are just absolute, or
relative to the N_SO, depending on
BLOCK_ADDRESS_ABSOLUTE. */
function_start_offset = valu;
/* We use N_OPT to carry the gcc2_compiled flag. Sun uses it
for a bunch of other flags, too. Someday we may parse their
flags; for now we ignore theirs and hope they'll ignore ours. */
- case N_OPT: /* Solaris 2: Compiler options */
+ case N_OPT: /* Solaris 2: Compiler options. */
if (name)
{
if (strcmp (name, GCC2_COMPILED_FLAG_SYMBOL) == 0)
{
processing_gcc_compilation = 2;
#if 0 /* Works, but is experimental. -fnf */
- /* For now, stay with AUTO_DEMANGLING for g++ output, as we don't
- know whether it will use the old style or v3 mangling. */
+ /* For now, stay with AUTO_DEMANGLING for g++ output, as
+ we don't know whether it will use the old style or v3
+ mangling. */
if (AUTO_DEMANGLING)
{
set_demangling_style (GNU_DEMANGLING_STYLE_STRING);
break;
/* The following symbol types can be ignored. */
- case N_OBJ: /* Solaris 2: Object file dir and name */
- case N_PATCH: /* Solaris2: Patch Run Time Checker. */
- /* N_UNDF: Solaris 2: file separator mark */
- /* N_UNDF: -- we will never encounter it, since we only process one
- file's symbols at once. */
- case N_ENDM: /* Solaris 2: End of module */
+ case N_OBJ: /* Solaris 2: Object file dir and name. */
+ case N_PATCH: /* Solaris 2: Patch Run Time Checker. */
+ /* N_UNDF: Solaris 2: File separator mark. */
+ /* N_UNDF: -- we will never encounter it, since we only process
+ one file's symbols at once. */
+ case N_ENDM: /* Solaris 2: End of module. */
case N_ALIAS: /* SunPro F77: alias name, ignore for now. */
break;
}
symbol. */
if (name[0] == '#')
{
- /* Initialize symbol reference names and determine if this is
- a definition. If symbol reference is being defined, go
- ahead and add it. Otherwise, just return sym. */
+ /* Initialize symbol reference names and determine if this is a
+ definition. If a symbol reference is being defined, go ahead
+ and add it. Otherwise, just return. */
char *s = name;
int refnum;
name = s;
}
-
previous_stab_code = type;
}
\f
projects / binutils-gdb.git / commitdiff