1 /* SystemTap probe support for GDB. 2 3 Copyright (C) 2012-2020 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #if !defined (STAP_PROBE_H) 21 #define STAP_PROBE_H 1 22 23 #include "parser-defs.h" 24 25 /* Structure which holds information about the parsing process of one probe's 26 argument. */ 27 28 struct stap_parse_info 29 { 30 stap_parse_info (const char *arg_, struct type *arg_type_, 31 const struct language_defn *lang, 32 struct gdbarch *gdbarch) 33 : arg (arg_), 34 pstate (lang, gdbarch), 35 saved_arg (arg_), 36 arg_type (arg_type_), 37 gdbarch (gdbarch), 38 inside_paren_p (0) 39 { 40 } 41 42 DISABLE_COPY_AND_ASSIGN (stap_parse_info); 43 44 /* The probe's argument in a string format. */ 45 const char *arg; 46 47 /* The parser state to be used when generating the expression. */ 48 struct expr_builder pstate; 49 50 /* A pointer to the full chain of arguments. This is useful for printing 51 error messages. The parser functions should not modify this argument 52 directly; instead, they should use the ARG pointer above. */ 53 const char *saved_arg; 54 55 /* The expected argument type (bitness), as defined in the probe's 56 argument. For instance, if the argument begins with `-8@', it means 57 the bitness is 64-bit signed. In this case, ARG_TYPE would represent 58 the type `int64_t'. */ 59 struct type *arg_type; 60 61 /* A pointer to the current gdbarch. */ 62 struct gdbarch *gdbarch; 63 64 /* Greater than zero if we are inside a parenthesized expression. Useful 65 for knowing when to skip spaces or not. */ 66 int inside_paren_p; 67 }; 68 69 #endif /* !defined (STAP_PROBE_H) */ 70