1*b725ae77Skettenis /* Internal interfaces for the GNU/Linux specific target code for gdbserver. 2*b725ae77Skettenis Copyright 2002, 2004 Free Software Foundation, Inc. 3*b725ae77Skettenis 4*b725ae77Skettenis This file is part of GDB. 5*b725ae77Skettenis 6*b725ae77Skettenis This program is free software; you can redistribute it and/or modify 7*b725ae77Skettenis it under the terms of the GNU General Public License as published by 8*b725ae77Skettenis the Free Software Foundation; either version 2 of the License, or 9*b725ae77Skettenis (at your option) any later version. 10*b725ae77Skettenis 11*b725ae77Skettenis This program is distributed in the hope that it will be useful, 12*b725ae77Skettenis but WITHOUT ANY WARRANTY; without even the implied warranty of 13*b725ae77Skettenis MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14*b725ae77Skettenis GNU General Public License for more details. 15*b725ae77Skettenis 16*b725ae77Skettenis You should have received a copy of the GNU General Public License 17*b725ae77Skettenis along with this program; if not, write to the Free Software 18*b725ae77Skettenis Foundation, Inc., 59 Temple Place - Suite 330, 19*b725ae77Skettenis Boston, MA 02111-1307, USA. */ 20*b725ae77Skettenis 21*b725ae77Skettenis #ifdef HAVE_LINUX_REGSETS 22*b725ae77Skettenis typedef void (*regset_fill_func) (void *); 23*b725ae77Skettenis typedef void (*regset_store_func) (const void *); 24*b725ae77Skettenis enum regset_type { 25*b725ae77Skettenis GENERAL_REGS, 26*b725ae77Skettenis FP_REGS, 27*b725ae77Skettenis EXTENDED_REGS, 28*b725ae77Skettenis }; 29*b725ae77Skettenis 30*b725ae77Skettenis struct regset_info 31*b725ae77Skettenis { 32*b725ae77Skettenis int get_request, set_request; 33*b725ae77Skettenis int size; 34*b725ae77Skettenis enum regset_type type; 35*b725ae77Skettenis regset_fill_func fill_function; 36*b725ae77Skettenis regset_store_func store_function; 37*b725ae77Skettenis }; 38*b725ae77Skettenis extern struct regset_info target_regsets[]; 39*b725ae77Skettenis #endif 40*b725ae77Skettenis 41*b725ae77Skettenis struct linux_target_ops 42*b725ae77Skettenis { 43*b725ae77Skettenis int num_regs; 44*b725ae77Skettenis int *regmap; 45*b725ae77Skettenis int (*cannot_fetch_register) (int); 46*b725ae77Skettenis 47*b725ae77Skettenis /* Returns 0 if we can store the register, 1 if we can not 48*b725ae77Skettenis store the register, and 2 if failure to store the register 49*b725ae77Skettenis is acceptable. */ 50*b725ae77Skettenis int (*cannot_store_register) (int); 51*b725ae77Skettenis CORE_ADDR (*get_pc) (void); 52*b725ae77Skettenis void (*set_pc) (CORE_ADDR newpc); 53*b725ae77Skettenis const char *breakpoint; 54*b725ae77Skettenis int breakpoint_len; 55*b725ae77Skettenis CORE_ADDR (*breakpoint_reinsert_addr) (void); 56*b725ae77Skettenis 57*b725ae77Skettenis 58*b725ae77Skettenis int decr_pc_after_break; 59*b725ae77Skettenis int (*breakpoint_at) (CORE_ADDR pc); 60*b725ae77Skettenis }; 61*b725ae77Skettenis 62*b725ae77Skettenis extern struct linux_target_ops the_low_target; 63*b725ae77Skettenis 64*b725ae77Skettenis #define get_process(inf) ((struct process_info *)(inf)) 65*b725ae77Skettenis #define get_thread_process(thr) (get_process (inferior_target_data (thr))) 66*b725ae77Skettenis #define get_process_thread(proc) ((struct thread_info *) \ 67*b725ae77Skettenis find_inferior_id (&all_threads, \ 68*b725ae77Skettenis get_process (proc)->tid)) 69*b725ae77Skettenis 70*b725ae77Skettenis struct process_info 71*b725ae77Skettenis { 72*b725ae77Skettenis struct inferior_list_entry head; 73*b725ae77Skettenis int thread_known; 74*b725ae77Skettenis int lwpid; 75*b725ae77Skettenis int tid; 76*b725ae77Skettenis 77*b725ae77Skettenis /* If this flag is set, the next SIGSTOP will be ignored (the process will 78*b725ae77Skettenis be immediately resumed). */ 79*b725ae77Skettenis int stop_expected; 80*b725ae77Skettenis 81*b725ae77Skettenis /* If this flag is set, the process is known to be stopped right now (stop 82*b725ae77Skettenis event already received in a wait()). */ 83*b725ae77Skettenis int stopped; 84*b725ae77Skettenis 85*b725ae77Skettenis /* If this flag is set, we have sent a SIGSTOP to this process and are 86*b725ae77Skettenis waiting for it to stop. */ 87*b725ae77Skettenis int sigstop_sent; 88*b725ae77Skettenis 89*b725ae77Skettenis /* If this flag is set, STATUS_PENDING is a waitstatus that has not yet 90*b725ae77Skettenis been reported. */ 91*b725ae77Skettenis int status_pending_p; 92*b725ae77Skettenis int status_pending; 93*b725ae77Skettenis 94*b725ae77Skettenis /* If this flag is set, the pending status is a (GDB-placed) breakpoint. */ 95*b725ae77Skettenis int pending_is_breakpoint; 96*b725ae77Skettenis CORE_ADDR pending_stop_pc; 97*b725ae77Skettenis 98*b725ae77Skettenis /* If this is non-zero, it is a breakpoint to be reinserted at our next 99*b725ae77Skettenis stop (SIGTRAP stops only). */ 100*b725ae77Skettenis CORE_ADDR bp_reinsert; 101*b725ae77Skettenis 102*b725ae77Skettenis /* If this flag is set, the last continue operation on this process 103*b725ae77Skettenis was a single-step. */ 104*b725ae77Skettenis int stepping; 105*b725ae77Skettenis 106*b725ae77Skettenis /* If this is non-zero, it points to a chain of signals which need to 107*b725ae77Skettenis be delivered to this process. */ 108*b725ae77Skettenis struct pending_signals *pending_signals; 109*b725ae77Skettenis 110*b725ae77Skettenis /* A link used when resuming. It is initialized from the resume request, 111*b725ae77Skettenis and then processed and cleared in linux_resume_one_process. */ 112*b725ae77Skettenis 113*b725ae77Skettenis struct thread_resume *resume; 114*b725ae77Skettenis }; 115*b725ae77Skettenis 116*b725ae77Skettenis extern struct inferior_list all_processes; 117*b725ae77Skettenis 118*b725ae77Skettenis void linux_attach_lwp (int pid, int tid); 119*b725ae77Skettenis 120*b725ae77Skettenis int thread_db_init (void); 121