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2002-11-08 David Carlton <carlton@math.stanford.edu> 

* linespec.c (symbol_found): New function.
	(minsym_found): New function.
	(decode_line_1): Separate out some code into separate functions.
This commit is contained in:
David Carlton 2002-11-08 19:16:17 +00:00
parent 5512c44af4
commit 413dad4d0e
2 changed files with 114 additions and 89 deletions
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6
gdb/ChangeLog
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@ -1,3 +1,9 @@
2002-11-08 David Carlton <carlton@math.stanford.edu>
* linespec.c (symbol_found): New function.
(minsym_found): New function.
(decode_line_1): Separate out some code into separate functions.
2002-11-08 Joel Brobecker <brobecker@gnat.com>
* i386-tdep.c (i386_frameless_signal_p): Make non static for

197
gdb/linespec.c
View File

@ -53,6 +53,18 @@ static char *find_toplevel_char (char *s, char c);
static struct symtabs_and_lines decode_line_2 (struct symbol *[],
int, int, char ***);
static struct
symtabs_and_lines symbol_found (int funfirstline,
char ***canonical,
char *copy,
struct symbol *sym,
struct symtab *s,
struct symtab *sym_symtab);
static struct
symtabs_and_lines minsym_found (int funfirstline,
struct minimal_symbol *msymbol);
/* Helper functions. */
/* Issue a helpful hint on using the command completion feature on
@ -910,16 +922,9 @@ decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab,
/* Look up entire name */
sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab);
s = (struct symtab *) 0;
/* Prepare to jump: restore the " if (condition)" so outer layers see it */
/* Symbol was found --> jump to normal symbol processing.
Code following "symbol_found" expects "copy" to have the
symbol name, "sym" to have the symbol pointer, "s" to be
a specified file's symtab, and sym_symtab to be the symbol's
symtab. */
/* By jumping there we avoid falling through the FILE:LINE and
FILE:FUNC processing stuff below */
if (sym)
goto symbol_found;
return symbol_found (funfirstline, canonical, copy, sym,
NULL, sym_symtab);
/* Couldn't find any interpretation as classes/namespaces, so give up */
/* The quotes are important if copy is empty. */
@ -985,12 +990,9 @@ decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab,
sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab);
if (sym)
{
/* Yes, we have a symbol; jump to symbol processing */
/* Code after symbol_found expects S, SYM_SYMTAB, SYM,
and COPY to be set correctly */
*argptr = (*p == '\'') ? p + 1 : p;
s = (struct symtab *) 0;
goto symbol_found;
return symbol_found (funfirstline, canonical, copy, sym,
NULL, sym_symtab);
}
/* Otherwise fall out from here and go to file/line spec
processing, etc. */
@ -1151,19 +1153,16 @@ decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab,
sym = lookup_symbol (copy, 0, VAR_NAMESPACE, 0, &sym_symtab);
s = (struct symtab *) 0;
need_canonical = 1;
/* Symbol was found --> jump to normal symbol processing.
Code following "symbol_found" expects "copy" to have the
symbol name, "sym" to have the symbol pointer, "s" to be
a specified file's symtab, and sym_symtab to be the symbol's
symtab. */
/* Symbol was found --> jump to normal symbol processing. */
if (sym)
goto symbol_found;
return symbol_found (funfirstline, canonical, copy, sym,
NULL, sym_symtab);
/* If symbol was not found, look in minimal symbol tables */
msymbol = lookup_minimal_symbol (copy, NULL, NULL);
/* Min symbol was found --> jump to minsym processing. */
if (msymbol)
goto minimal_symbol_found;
return minsym_found (funfirstline, msymbol);
/* Not a user variable or function -- must be convenience variable */
need_canonical = (s == 0) ? 1 : 0;
@ -1196,79 +1195,13 @@ decode_line_1 (char **argptr, int funfirstline, struct symtab *default_symtab,
: get_selected_block (0)),
VAR_NAMESPACE, 0, &sym_symtab);
symbol_found: /* We also jump here from inside the C++ class/namespace
code on finding a symbol of the form "A::B::C" */
if (sym != NULL)
{
if (SYMBOL_CLASS (sym) == LOC_BLOCK)
{
/* Arg is the name of a function */
values.sals = (struct symtab_and_line *)
xmalloc (sizeof (struct symtab_and_line));
values.sals[0] = find_function_start_sal (sym, funfirstline);
values.nelts = 1;
/* Don't use the SYMBOL_LINE; if used at all it points to
the line containing the parameters or thereabouts, not
the first line of code. */
/* We might need a canonical line spec if it is a static
function. */
if (s == 0)
{
struct blockvector *bv = BLOCKVECTOR (sym_symtab);
struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
if (lookup_block_symbol (b, copy, NULL, VAR_NAMESPACE) != NULL)
build_canonical_line_spec (values.sals, copy, canonical);
}
return values;
}
else
{
if (funfirstline)
error ("\"%s\" is not a function", copy);
else if (SYMBOL_LINE (sym) != 0)
{
/* We know its line number. */
values.sals = (struct symtab_and_line *)
xmalloc (sizeof (struct symtab_and_line));
values.nelts = 1;
memset (&values.sals[0], 0, sizeof (values.sals[0]));
values.sals[0].symtab = sym_symtab;
values.sals[0].line = SYMBOL_LINE (sym);
return values;
}
else
/* This can happen if it is compiled with a compiler which doesn't
put out line numbers for variables. */
/* FIXME: Shouldn't we just set .line and .symtab to zero
and return? For example, "info line foo" could print
the address. */
error ("Line number not known for symbol \"%s\"", copy);
}
}
return symbol_found (funfirstline, canonical, copy, sym, s, sym_symtab);
msymbol = lookup_minimal_symbol (copy, NULL, NULL);
minimal_symbol_found: /* We also jump here from the case for variables
that begin with '$' */
if (msymbol != NULL)
{
values.sals = (struct symtab_and_line *)
xmalloc (sizeof (struct symtab_and_line));
values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol),
(struct sec *) 0, 0);
values.sals[0].section = SYMBOL_BFD_SECTION (msymbol);
if (funfirstline)
{
values.sals[0].pc += FUNCTION_START_OFFSET;
values.sals[0].pc = SKIP_PROLOGUE (values.sals[0].pc);
}
values.nelts = 1;
return values;
}
return minsym_found (funfirstline, msymbol);
if (!have_full_symbols () &&
!have_partial_symbols () && !have_minimal_symbols ())
@ -1277,3 +1210,89 @@ minimal_symbol_found: /* We also jump here from the case for variables
error ("Function \"%s\" not defined.", copy);
return values; /* for lint */
}
/* Now come some functions that are called from multiple places within
decode_line_1. */
/* We've found a symbol SYM to associate with our linespec; build a
corresponding struct symtabs_and_lines. */
static struct symtabs_and_lines
symbol_found (int funfirstline, char ***canonical, char *copy,
struct symbol *sym, struct symtab *s,
struct symtab *sym_symtab)
{
struct symtabs_and_lines values;
if (SYMBOL_CLASS (sym) == LOC_BLOCK)
{
/* Arg is the name of a function */
values.sals = (struct symtab_and_line *)
xmalloc (sizeof (struct symtab_and_line));
values.sals[0] = find_function_start_sal (sym, funfirstline);
values.nelts = 1;
/* Don't use the SYMBOL_LINE; if used at all it points to
the line containing the parameters or thereabouts, not
the first line of code. */
/* We might need a canonical line spec if it is a static
function. */
if (s == 0)
{
struct blockvector *bv = BLOCKVECTOR (sym_symtab);
struct block *b = BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK);
if (lookup_block_symbol (b, copy, NULL, VAR_NAMESPACE) != NULL)
build_canonical_line_spec (values.sals, copy, canonical);
}
return values;
}
else
{
if (funfirstline)
error ("\"%s\" is not a function", copy);
else if (SYMBOL_LINE (sym) != 0)
{
/* We know its line number. */
values.sals = (struct symtab_and_line *)
xmalloc (sizeof (struct symtab_and_line));
values.nelts = 1;
memset (&values.sals[0], 0, sizeof (values.sals[0]));
values.sals[0].symtab = sym_symtab;
values.sals[0].line = SYMBOL_LINE (sym);
return values;
}
else
/* This can happen if it is compiled with a compiler which doesn't
put out line numbers for variables. */
/* FIXME: Shouldn't we just set .line and .symtab to zero
and return? For example, "info line foo" could print
the address. */
error ("Line number not known for symbol \"%s\"", copy);
}
}
/* We've found a minimal symbol MSYMBOL to associate with our
linespec; build a corresponding struct symtabs_and_lines. */
static struct symtabs_and_lines
minsym_found (int funfirstline, struct minimal_symbol *msymbol)
{
struct symtabs_and_lines values;
values.sals = (struct symtab_and_line *)
xmalloc (sizeof (struct symtab_and_line));
values.sals[0] = find_pc_sect_line (SYMBOL_VALUE_ADDRESS (msymbol),
(struct sec *) 0, 0);
values.sals[0].section = SYMBOL_BFD_SECTION (msymbol);
if (funfirstline)
{
values.sals[0].pc += FUNCTION_START_OFFSET;
values.sals[0].pc = SKIP_PROLOGUE (values.sals[0].pc);
}
values.nelts = 1;
return values;
}