/* Parse expressions for GDB.
- Copyright 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
- 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+
+ Copyright 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
+ 1997, 1998, 1999, 2000, 2001, 2004 Free Software Foundation, Inc.
+
Modified from expread.y by the Department of Computer Science at the
State University of New York at Buffalo, 1991.
dump_subexp_body_standard,
evaluate_subexp_standard
};
-\f
-/* Symbols which architectures can redefine. */
-
-/* Some systems have routines whose names start with `$'. Giving this
- macro a non-zero value tells GDB's expression parser to check for
- such routines when parsing tokens that begin with `$'.
-
- On HP-UX, certain system routines (millicode) have names beginning
- with `$' or `$$'. For example, `$$dyncall' is a millicode routine
- that handles inter-space procedure calls on PA-RISC. */
-#ifndef SYMBOLS_CAN_START_WITH_DOLLAR
-#define SYMBOLS_CAN_START_WITH_DOLLAR (0)
-#endif
-
-
\f
/* Global variables declared in parser-defs.h (and commented there). */
struct expression *expout;
\f
static int expressiondebug = 0;
-extern int hp_som_som_object_present;
-
static void free_funcalls (void *ignore);
static void prefixify_expression (struct expression *);
static void prefixify_subexp (struct expression *, struct expression *, int,
int);
+static struct expression *parse_exp_in_context (char **, struct block *, int,
+ int);
+
void _initialize_parse (void);
/* Data structure for saving values of arglist_len for function calls whose
void
write_dollar_variable (struct stoken str)
{
+ struct symbol *sym = NULL;
+ struct minimal_symbol *msym = NULL;
+
/* Handle the tokens $digits; also $ (short for $0) and $$ (short for $$1)
and $$digits (equivalent to $<-digits> if you could type that). */
if (i >= 0)
goto handle_register;
- if (SYMBOLS_CAN_START_WITH_DOLLAR)
- {
- struct symbol *sym = NULL;
- struct minimal_symbol *msym = NULL;
+ /* On some systems, such as HP-UX and hppa-linux, certain system routines
+ have names beginning with $ or $$. Check for those, first. */
- /* On HP-UX, certain system routines (millicode) have names beginning
- with $ or $$, e.g. $$dyncall, which handles inter-space procedure
- calls on PA-RISC. Check for those, first. */
-
- /* This code is not enabled on non HP-UX systems, since worst case
- symbol table lookup performance is awful, to put it mildly. */
-
- sym = lookup_symbol (copy_name (str), (struct block *) NULL,
- VAR_DOMAIN, (int *) NULL, (struct symtab **) NULL);
- if (sym)
- {
- write_exp_elt_opcode (OP_VAR_VALUE);
- write_exp_elt_block (block_found); /* set by lookup_symbol */
- write_exp_elt_sym (sym);
- write_exp_elt_opcode (OP_VAR_VALUE);
- return;
- }
- msym = lookup_minimal_symbol (copy_name (str), NULL, NULL);
- if (msym)
- {
- write_exp_msymbol (msym,
- lookup_function_type (builtin_type_int),
- builtin_type_int);
- return;
- }
+ sym = lookup_symbol (copy_name (str), (struct block *) NULL,
+ VAR_DOMAIN, (int *) NULL, (struct symtab **) NULL);
+ if (sym)
+ {
+ write_exp_elt_opcode (OP_VAR_VALUE);
+ write_exp_elt_block (block_found); /* set by lookup_symbol */
+ write_exp_elt_sym (sym);
+ write_exp_elt_opcode (OP_VAR_VALUE);
+ return;
+ }
+ msym = lookup_minimal_symbol (copy_name (str), NULL, NULL);
+ if (msym)
+ {
+ write_exp_msymbol (msym,
+ lookup_function_type (builtin_type_int),
+ builtin_type_int);
+ return;
}
/* Any other names starting in $ are debugger internal variables. */
return NULL, and caller must default to standard GDB
behaviour. */
- if (!hp_som_som_object_present)
+ if (!deprecated_hp_som_som_object_present)
return (struct symbol *) NULL;
p = name;
struct expression *
parse_exp_1 (char **stringptr, struct block *block, int comma)
+{
+ return parse_exp_in_context (stringptr, block, comma, 0);
+}
+
+/* As for parse_exp_1, except that if VOID_CONTEXT_P, then
+ no value is expected from the expression. */
+
+static struct expression *
+parse_exp_in_context (char **stringptr, struct block *block, int comma,
+ int void_context_p)
{
struct cleanup *old_chain;
prefixify_expression (expout);
+ current_language->la_post_parser (&expout, void_context_p);
+
if (expressiondebug)
dump_prefix_expression (expout, gdb_stdlog);
error ("Junk after end of expression.");
return exp;
}
+
+
+/* As for parse_expression, except that if VOID_CONTEXT_P, then
+ no value is expected from the expression. */
+
+struct expression *
+parse_expression_in_context (char *string, int void_context_p)
+{
+ struct expression *exp;
+ exp = parse_exp_in_context (&string, 0, 0, void_context_p);
+ if (*string != '\000')
+ error ("Junk after end of expression.");
+ return exp;
+}
+
+/* A post-parser that does nothing */
+
+void
+null_post_parser (struct expression **exp, int void_context_p)
+{
+}
\f
/* Stuff for maintaining a stack of types. Currently just used by C, but
probably useful for any language which declares its types "backwards". */
/* FIXME - For the moment, handle types by swapping them in and out.
Should be using the per-architecture data-pointer and a large
struct. */
- register_gdbarch_swap (&msym_text_symbol_type, sizeof (msym_text_symbol_type), NULL);
- register_gdbarch_swap (&msym_data_symbol_type, sizeof (msym_data_symbol_type), NULL);
- register_gdbarch_swap (&msym_unknown_symbol_type, sizeof (msym_unknown_symbol_type), NULL);
-
- register_gdbarch_swap (NULL, 0, build_parse);
-
- add_show_from_set (
- add_set_cmd ("expression", class_maintenance, var_zinteger,
- (char *) &expressiondebug,
- "Set expression debugging.\n\
+ DEPRECATED_REGISTER_GDBARCH_SWAP (msym_text_symbol_type);
+ DEPRECATED_REGISTER_GDBARCH_SWAP (msym_data_symbol_type);
+ DEPRECATED_REGISTER_GDBARCH_SWAP (msym_unknown_symbol_type);
+ deprecated_register_gdbarch_swap (NULL, 0, build_parse);
+
+ deprecated_add_show_from_set
+ (add_set_cmd ("expression", class_maintenance, var_zinteger,
+ (char *) &expressiondebug,
+ "Set expression debugging.\n\
When non-zero, the internal representation of expressions will be printed.",
- &setdebuglist),
- &showdebuglist);
+ &setdebuglist),
+ &showdebuglist);
}
projects / deliverable / binutils-gdb.git / blobdiff