1 /* Code for native debugging support for GNU/Linux (LWP layer). 2 3 Copyright (C) 2000-2015 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 #ifndef LINUX_NAT_H 21 #define LINUX_NAT_H 22 23 #include "target/waitstatus.h" 24 25 struct lwp_info; 26 struct arch_lwp_info; 27 28 /* Unlike other extended result codes, WSTOPSIG (status) on 29 PTRACE_O_TRACESYSGOOD syscall events doesn't return SIGTRAP, but 30 instead SIGTRAP with bit 7 set. */ 31 #define SYSCALL_SIGTRAP (SIGTRAP | 0x80) 32 33 /* Return the ptid of the current lightweight process. With NPTL 34 threads and LWPs map 1:1, so this is equivalent to returning the 35 ptid of the current thread. This function must be provided by 36 the client. */ 37 38 extern ptid_t current_lwp_ptid (void); 39 40 /* Function type for the CALLBACK argument of iterate_over_lwps. */ 41 typedef int (iterate_over_lwps_ftype) (struct lwp_info *lwp, void *arg); 42 43 /* Iterate over all LWPs. Calls CALLBACK with its second argument set 44 to DATA for every LWP in the list. If CALLBACK returns nonzero for 45 a particular LWP, return a pointer to the structure describing that 46 LWP immediately. Otherwise return NULL. This function must be 47 provided by the client. */ 48 49 extern struct lwp_info *iterate_over_lwps (ptid_t filter, 50 iterate_over_lwps_ftype callback, 51 void *data); 52 53 /* Return the ptid of LWP. */ 54 55 extern ptid_t ptid_of_lwp (struct lwp_info *lwp); 56 57 /* Set the architecture-specific data of LWP. This function must be 58 provided by the client. */ 59 60 extern void lwp_set_arch_private_info (struct lwp_info *lwp, 61 struct arch_lwp_info *info); 62 63 /* Return the architecture-specific data of LWP. This function must 64 be provided by the client. */ 65 66 extern struct arch_lwp_info *lwp_arch_private_info (struct lwp_info *lwp); 67 68 /* Return nonzero if LWP is stopped, zero otherwise. This function 69 must be provided by the client. */ 70 71 extern int lwp_is_stopped (struct lwp_info *lwp); 72 73 /* Return the reason the LWP last stopped. This function must be 74 provided by the client. */ 75 76 extern enum target_stop_reason lwp_stop_reason (struct lwp_info *lwp); 77 78 /* Cause LWP to stop. This function must be provided by the 79 client. */ 80 81 extern void linux_stop_lwp (struct lwp_info *lwp); 82 83 #endif /* LINUX_NAT_H */ 84