/* Internal interfaces for the GNU/Linux specific target code for gdbserver.
- Copyright (C) 2002, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2004, 2005, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
This file is part of GDB.
#include <thread_db.h>
#endif
+#include "gdb_proc_service.h"
+
#ifdef HAVE_LINUX_REGSETS
-typedef void (*regset_fill_func) (void *);
-typedef void (*regset_store_func) (const void *);
+typedef void (*regset_fill_func) (struct regcache *, void *);
+typedef void (*regset_store_func) (struct regcache *, const void *);
enum regset_type {
GENERAL_REGS,
FP_REGS,
extern struct regset_info target_regsets[];
#endif
+struct siginfo;
+
+struct process_info_private
+{
+ /* Arch-specific additions. */
+ struct arch_process_info *arch_private;
+
+ /* libthread_db-specific additions. Not NULL if this process has loaded
+ thread_db, and it is active. */
+ struct thread_db *thread_db;
+};
+
+struct lwp_info;
+
struct linux_target_ops
{
/* Architecture-specific setup. */
store the register, and 2 if failure to store the register
is acceptable. */
int (*cannot_store_register) (int);
- CORE_ADDR (*get_pc) (void);
- void (*set_pc) (CORE_ADDR newpc);
+ CORE_ADDR (*get_pc) (struct regcache *regcache);
+ void (*set_pc) (struct regcache *regcache, CORE_ADDR newpc);
const unsigned char *breakpoint;
int breakpoint_len;
CORE_ADDR (*breakpoint_reinsert_addr) (void);
-
int decr_pc_after_break;
int (*breakpoint_at) (CORE_ADDR pc);
- /* Watchpoint related functions. See target.h for comments. */
- int (*insert_watchpoint) (char type, CORE_ADDR addr, int len);
- int (*remove_watchpoint) (char type, CORE_ADDR addr, int len);
+ /* Breakpoint and watchpoint related functions. See target.h for
+ comments. */
+ int (*insert_point) (char type, CORE_ADDR addr, int len);
+ int (*remove_point) (char type, CORE_ADDR addr, int len);
int (*stopped_by_watchpoint) (void);
CORE_ADDR (*stopped_data_address) (void);
- /* Whether to left-pad registers for PEEKUSR/POKEUSR if they are smaller
- than an xfer unit. */
- int left_pad_xfer;
-
- /* What string to report to GDB when it asks for the architecture,
- or NULL not to answer. */
- const char *arch_string;
+ /* Hooks to reformat register data for PEEKUSR/POKEUSR (in particular
+ for registers smaller than an xfer unit). */
+ void (*collect_ptrace_register) (struct regcache *regcache,
+ int regno, char *buf);
+ void (*supply_ptrace_register) (struct regcache *regcache,
+ int regno, const char *buf);
+
+ /* Hook to convert from target format to ptrace format and back.
+ Returns true if any conversion was done; false otherwise.
+ If DIRECTION is 1, then copy from INF to NATIVE.
+ If DIRECTION is 0, copy from NATIVE to INF. */
+ int (*siginfo_fixup) (struct siginfo *native, void *inf, int direction);
+
+ /* Hook to call when a new process is created or attached to.
+ If extra per-process architecture-specific data is needed,
+ allocate it here. */
+ struct arch_process_info * (*new_process) (void);
+
+ /* Hook to call when a new thread is detected.
+ If extra per-thread architecture-specific data is needed,
+ allocate it here. */
+ struct arch_lwp_info * (*new_thread) (void);
+
+ /* Hook to call prior to resuming a thread. */
+ void (*prepare_to_resume) (struct lwp_info *);
};
extern struct linux_target_ops the_low_target;
-#define get_process(inf) ((struct process_info *)(inf))
-#define get_thread_process(thr) (get_process (inferior_target_data (thr)))
-#define get_process_thread(proc) ((struct thread_info *) \
- find_inferior_id (&all_threads, \
- get_process (proc)->lwpid))
+#define ptid_of(proc) ((proc)->head.id)
+#define pid_of(proc) ptid_get_pid ((proc)->head.id)
+#define lwpid_of(proc) ptid_get_lwp ((proc)->head.id)
+
+#define get_lwp(inf) ((struct lwp_info *)(inf))
+#define get_thread_lwp(thr) (get_lwp (inferior_target_data (thr)))
+#define get_lwp_thread(proc) ((struct thread_info *) \
+ find_inferior_id (&all_threads, \
+ get_lwp (proc)->head.id))
-struct process_info
+struct lwp_info
{
struct inferior_list_entry head;
- unsigned long lwpid;
/* If this flag is set, the next SIGSTOP will be ignored (the
process will be immediately resumed). This means that either we
yet. */
int stop_expected;
- /* If this flag is set, the process is known to be stopped right now (stop
+ /* When this is true, we shall not try to resume this thread, even
+ if last_resume_kind isn't resume_stop. */
+ int suspended;
+
+ /* If this flag is set, the lwp is known to be stopped right now (stop
event already received in a wait()). */
int stopped;
- /* When stopped is set, the last wait status recorded for this process. */
+ /* If this flag is set, the lwp is known to be dead already (exit
+ event already received in a wait(), and is cached in
+ status_pending). */
+ int dead;
+
+ /* When stopped is set, the last wait status recorded for this lwp. */
int last_status;
+ /* When stopped is set, this is where the lwp stopped, with
+ decr_pc_after_break already accounted for. */
+ CORE_ADDR stop_pc;
+
/* If this flag is set, STATUS_PENDING is a waitstatus that has not yet
been reported. */
int status_pending_p;
int status_pending;
- /* If this flag is set, the pending status is a (GDB-placed) breakpoint. */
- int pending_is_breakpoint;
- CORE_ADDR pending_stop_pc;
+ /* STOPPED_BY_WATCHPOINT is non-zero if this LWP stopped with a data
+ watchpoint trap. */
+ int stopped_by_watchpoint;
+
+ /* On architectures where it is possible to know the data address of
+ a triggered watchpoint, STOPPED_DATA_ADDRESS is non-zero, and
+ contains such data address. Only valid if STOPPED_BY_WATCHPOINT
+ is true. */
+ CORE_ADDR stopped_data_address;
/* If this is non-zero, it is a breakpoint to be reinserted at our next
stop (SIGTRAP stops only). */
CORE_ADDR bp_reinsert;
- /* If this flag is set, the last continue operation on this process
- was a single-step. */
+ /* If this flag is set, the last continue operation at the ptrace
+ level on this process was a single-step. */
int stepping;
+ /* If this flag is set, we need to set the event request flags the
+ next time we see this LWP stop. */
+ int must_set_ptrace_flags;
+
/* If this is non-zero, it points to a chain of signals which need to
be delivered to this process. */
struct pending_signals *pending_signals;
/* A link used when resuming. It is initialized from the resume request,
- and then processed and cleared in linux_resume_one_process. */
-
+ and then processed and cleared in linux_resume_one_lwp. */
struct thread_resume *resume;
+ /* The last resume GDB requested on this thread. */
+ enum resume_kind last_resume_kind;
+
+ /* True if the LWP was seen stop at an internal breakpoint and needs
+ stepping over later when it is resumed. */
+ int need_step_over;
+
int thread_known;
- unsigned long tid;
#ifdef HAVE_THREAD_DB_H
/* The thread handle, used for e.g. TLS access. Only valid if
THREAD_KNOWN is set. */
td_thrhandle_t th;
#endif
+
+ /* Arch-specific additions. */
+ struct arch_lwp_info *arch_private;
};
-extern struct inferior_list all_processes;
+extern struct inferior_list all_lwps;
+
+char *linux_child_pid_to_exec_file (int pid);
+int elf_64_file_p (const char *file);
void linux_attach_lwp (unsigned long pid);
+struct lwp_info *find_lwp_pid (ptid_t ptid);
+/* From thread-db.c */
int thread_db_init (int use_events);
+void thread_db_free (struct process_info *, int detaching);
+int thread_db_handle_monitor_command (char *);
int thread_db_get_tls_address (struct thread_info *thread, CORE_ADDR offset,
CORE_ADDR load_module, CORE_ADDR *address);
projects / deliverable / binutils-gdb.git / blobdiff