X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fparser-defs.h;h=de283d04fbd9e569ebfaf048fc1c1260282260a9;hb=1a7d0ce4eb4d724a3853500b45b379e746d7077a;hp=c4eb1a042a814713e6788501e8d6b606211215b8;hpb=92981e24467c4247c8bf16780cac90b340c0a4c2;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/parser-defs.h b/gdb/parser-defs.h index c4eb1a042a..de283d04fb 100644 --- a/gdb/parser-defs.h +++ b/gdb/parser-defs.h @@ -1,8 +1,7 @@ /* Parser definitions for GDB. - Copyright (C) 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, - 1998, 1999, 2000, 2002, 2007, 2008, 2009, 2010 - Free Software Foundation, Inc. + Copyright (C) 1986, 1989-2000, 2002, 2007-2012 Free Software + Foundation, Inc. Modified from expread.y by the Department of Computer Science at the State University of New York at Buffalo. @@ -50,7 +49,7 @@ extern struct block *expression_context_block; extern CORE_ADDR expression_context_pc; /* The innermost context required by the stack and register variables - we've encountered so far. */ + we've encountered so far. */ extern struct block *innermost_block; /* The block in which the most recently discovered symbol was found. @@ -62,13 +61,13 @@ extern struct block *block_found; extern int arglist_len; /* A string token, either a char-string or bit-string. Char-strings are - used, for example, for the names of symbols. */ + used, for example, for the names of symbols. */ struct stoken { - /* Pointer to first byte of char-string or first bit of bit-string */ + /* Pointer to first byte of char-string or first bit of bit-string. */ char *ptr; - /* Length of string in bytes for char-string or bits for bit-string */ + /* Length of string in bytes for char-string or bits for bit-string. */ int length; }; @@ -76,9 +75,9 @@ struct typed_stoken { /* A language-specific type field. */ int type; - /* Pointer to first byte of char-string or first bit of bit-string */ + /* Pointer to first byte of char-string or first bit of bit-string. */ char *ptr; - /* Length of string in bytes for char-string or bits for bit-string */ + /* Length of string in bytes for char-string or bits for bit-string. */ int length; }; @@ -128,10 +127,42 @@ union type_stack_elt enum type_pieces piece; int int_val; }; -extern union type_stack_elt *type_stack; -extern int type_stack_depth, type_stack_size; -extern void write_exp_elt (union exp_element); +/* The type stack is an instance of this structure. */ + +struct type_stack +{ + /* Elements on the stack. */ + union type_stack_elt *elements; + /* Current stack depth. */ + int depth; + /* Allocated size of stack. */ + int size; +}; + +/* Helper function to initialize the expout, expout_size, expout_ptr + trio before it is used to store expression elements created during + the parsing of an expression. INITIAL_SIZE is the initial size of + the expout array. LANG is the language used to parse the expression. + And GDBARCH is the gdbarch to use during parsing. */ + +extern void initialize_expout (int, const struct language_defn *, + struct gdbarch *); + +/* Helper function that frees any unsed space in the expout array. + It is generally used when the parser has just been parsed and + created. */ + +extern void reallocate_expout (void); + +/* Reverse an expression from suffix form (in which it is constructed) + to prefix form (in which we can conveniently print or execute it). + Ordinarily this always returns -1. However, if EXPOUT_LAST_STRUCT + is not -1 (i.e., we are trying to complete a field name), it will + return the index of the subexpression which is the left-hand-side + of the struct operation at EXPOUT_LAST_STRUCT. */ + +extern int prefixify_expression (struct expression *expr); extern void write_exp_elt_opcode (enum exp_opcode); @@ -171,11 +202,13 @@ extern int end_arglist (void); extern char *copy_name (struct stoken); +extern void insert_type (enum type_pieces); + extern void push_type (enum type_pieces); extern void push_type_int (int); -extern void push_type_address_space (char *); +extern void insert_type_address_space (char *); extern enum type_pieces pop_type (void); @@ -188,9 +221,15 @@ extern int dump_subexp (struct expression *, struct ui_file *, int); extern int dump_subexp_body_standard (struct expression *, struct ui_file *, int); -extern void operator_length (struct expression *, int, int *, int *); +extern void operator_length (const struct expression *, int, int *, int *); -extern void operator_length_standard (struct expression *, int, int *, int *); +extern void operator_length_standard (const struct expression *, int, int *, + int *); + +extern int operator_check_standard (struct expression *exp, int pos, + int (*objfile_func) + (struct objfile *objfile, void *data), + void *data); extern char *op_name_standard (enum exp_opcode); @@ -198,26 +237,21 @@ extern struct type *follow_types (struct type *); extern void null_post_parser (struct expression **, int); +extern int parse_float (const char *p, int len, DOUBLEST *d, + const char **suffix); + +extern int parse_c_float (struct gdbarch *gdbarch, const char *p, int len, + DOUBLEST *d, struct type **t); + /* During parsing of a C expression, the pointer to the next character is in this variable. */ extern char *lexptr; -/* After a token has been recognized, this variable points to it. +/* After a token has been recognized, this variable points to it. Currently used only for error reporting. */ extern char *prev_lexptr; -/* Tokens that refer to names do so with explicit pointer and length, - so they can share the storage that lexptr is parsing. - - When it is necessary to pass a name to a function that expects - a null-terminated string, the substring is copied out - into a block of storage that namecopy points to. - - namecopy is allocated once, guaranteed big enough, for each parsing. */ - -extern char *namecopy; - /* Current depth in parentheses within the expression. */ extern int paren_depth; @@ -253,7 +287,7 @@ struct op_print enum precedence precedence; /* For a binary operator: 1 iff right associate. - For a unary operator: 1 iff postfix. */ + For a unary operator: 1 iff postfix. */ int right_assoc; }; @@ -268,7 +302,20 @@ struct exp_descriptor /* Returns number of exp_elements needed to represent an operator and the number of subexpressions it takes. */ - void (*operator_length) (struct expression*, int, int*, int *); + void (*operator_length) (const struct expression*, int, int*, int *); + + /* Call TYPE_FUNC and OBJFILE_FUNC for any TYPE and OBJFILE found being + referenced by the single operator of EXP at position POS. Operator + parameters are located at positive (POS + number) offsets in EXP. + The functions should never be called with NULL TYPE or NULL OBJFILE. + Functions should get passed an arbitrary caller supplied DATA pointer. + If any of the functions returns non-zero value then (any other) non-zero + value should be immediately returned to the caller. Otherwise zero + should be returned. */ + int (*operator_check) (struct expression *exp, int pos, + int (*objfile_func) (struct objfile *objfile, + void *data), + void *data); /* Name of this operator for dumping purposes. */ char *(*op_name) (enum exp_opcode); @@ -300,6 +347,8 @@ extern void print_subexp_standard (struct expression *, int *, /* Function used to avoid direct calls to fprintf in the code generated by the bison parser. */ -extern void parser_fprintf (FILE *, const char *, ...) ATTR_FORMAT (printf, 2 ,3); +extern void parser_fprintf (FILE *, const char *, ...) ATTRIBUTE_PRINTF (2, 3); + +extern int exp_uses_objfile (struct expression *exp, struct objfile *objfile); #endif /* PARSER_DEFS_H */