X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fgdbserver%2Fserver.h;h=26d0dfb0ebfaaeaaf57d4415df6f26d4932fc41a;hb=0747795c085d3b2a35da6bb474f32c58ce1b70c8;hp=49f94d03f260d2c01da97ed62a4df9f4528788d0;hpb=447d4319533bb44f7447195f29d12e13ef4223b0;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/gdbserver/server.h b/gdb/gdbserver/server.h index 49f94d03f2..26d0dfb0eb 100644 --- a/gdb/gdbserver/server.h +++ b/gdb/gdbserver/server.h @@ -1,6 +1,5 @@ /* Common definitions for remote server for GDB. - Copyright (C) 1993, 1995, 1997-2000, 2002-2012 Free Software - Foundation, Inc. + Copyright (C) 1993-2019 Free Software Foundation, Inc. This file is part of GDB. @@ -20,32 +19,15 @@ #ifndef SERVER_H #define SERVER_H -#include "config.h" +#include "common/common-defs.h" + +gdb_static_assert (sizeof (CORE_ADDR) >= sizeof (void *)); #ifdef __MINGW32CE__ #include "wincecompat.h" #endif -#include -#include -#include -#ifdef HAVE_ERRNO_H -#include -#endif -#include - -#ifdef HAVE_STRING_H -#include -#endif - -#ifdef HAVE_ALLOCA_H -#include -#endif -/* On some systems such as MinGW, alloca is declared in malloc.h - (there is no alloca.h). */ -#if HAVE_MALLOC_H -#include -#endif +#include "common/version.h" #if !HAVE_DECL_STRERROR #ifndef strerror @@ -66,232 +48,27 @@ extern int vasprintf(char **strp, const char *fmt, va_list ap); int vsnprintf(char *str, size_t size, const char *format, va_list ap); #endif -#ifndef ATTR_NORETURN -#if defined(__GNUC__) && (__GNUC__ > 2 \ - || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)) -#define ATTR_NORETURN __attribute__ ((noreturn)) -#else -#define ATTR_NORETURN /* nothing */ -#endif -#endif - -#ifndef ATTR_FORMAT -#if defined(__GNUC__) && (__GNUC__ > 2 \ - || (__GNUC__ == 2 && __GNUC_MINOR__ >= 4)) -#define ATTR_FORMAT(type, x, y) __attribute__ ((format(type, x, y))) -#else -#define ATTR_FORMAT(type, x, y) /* nothing */ -#endif -#endif - -#ifndef ATTR_MALLOC -#if defined(__GNUC__) && (__GNUC__ >= 3) -#define ATTR_MALLOC __attribute__ ((__malloc__)) -#else -#define ATTR_MALLOC /* nothing */ -#endif -#endif - -/* Define underscore macro, if not available, to be able to use it inside - code shared with gdb in common directory. */ -#ifndef _ -#define _(String) (String) -#endif - #ifdef IN_PROCESS_AGENT # define PROG "ipa" #else # define PROG "gdbserver" #endif -/* A type used for binary buffers. */ -typedef unsigned char gdb_byte; - -#include "ptid.h" -#include "buffer.h" -#include "xml-utils.h" -#include "gdb_locale.h" - -/* FIXME: This should probably be autoconf'd for. It's an integer type at - least the size of a (void *). */ -typedef long long CORE_ADDR; - -typedef long long LONGEST; -typedef unsigned long long ULONGEST; - -/* Generic information for tracking a list of ``inferiors'' - threads, - processes, etc. */ -struct inferior_list -{ - struct inferior_list_entry *head; - struct inferior_list_entry *tail; -}; -struct inferior_list_entry -{ - ptid_t id; - struct inferior_list_entry *next; -}; - -struct thread_info; -struct process_info; -struct regcache; - +#include "common/buffer.h" +#include "common/xml-utils.h" #include "regcache.h" -#include "gdb/signals.h" -#include "gdb_signals.h" +#include "common/gdb_signals.h" #include "target.h" #include "mem-break.h" - -struct thread_info -{ - struct inferior_list_entry entry; - void *target_data; - void *regcache_data; - - /* The last resume GDB requested on this thread. */ - enum resume_kind last_resume_kind; - - /* The last wait status reported for this thread. */ - struct target_waitstatus last_status; - - /* Given `while-stepping', a thread may be collecting data for more - than one tracepoint simultaneously. E.g.: - - ff0001 INSN1 <-- TP1, while-stepping 10 collect $regs - ff0002 INSN2 - ff0003 INSN3 <-- TP2, collect $regs - ff0004 INSN4 <-- TP3, while-stepping 10 collect $regs - ff0005 INSN5 - - Notice that when instruction INSN5 is reached, the while-stepping - actions of both TP1 and TP3 are still being collected, and that TP2 - had been collected meanwhile. The whole range of ff0001-ff0005 - should be single-stepped, due to at least TP1's while-stepping - action covering the whole range. - - On the other hand, the same tracepoint with a while-stepping action - may be hit by more than one thread simultaneously, hence we can't - keep the current step count in the tracepoint itself. - - This is the head of the list of the states of `while-stepping' - tracepoint actions this thread is now collecting; NULL if empty. - Each item in the list holds the current step of the while-stepping - action. */ - struct wstep_state *while_stepping; -}; - -struct dll_info -{ - struct inferior_list_entry entry; - char *name; - CORE_ADDR base_addr; -}; - -struct sym_cache; -struct breakpoint; -struct raw_breakpoint; -struct fast_tracepoint_jump; -struct process_info_private; - -struct process_info -{ - struct inferior_list_entry head; - - /* Nonzero if this child process was attached rather than - spawned. */ - int attached; - - /* True if GDB asked us to detach from this process, but we remained - attached anyway. */ - int gdb_detached; - - /* The symbol cache. */ - struct sym_cache *symbol_cache; - - /* The list of memory breakpoints. */ - struct breakpoint *breakpoints; - - /* The list of raw memory breakpoints. */ - struct raw_breakpoint *raw_breakpoints; - - /* The list of installed fast tracepoints. */ - struct fast_tracepoint_jump *fast_tracepoint_jumps; - - /* Private target data. */ - struct process_info_private *private; -}; - -/* Return a pointer to the process that corresponds to the current - thread (current_inferior). It is an error to call this if there is - no current thread selected. */ - -struct process_info *current_process (void); -struct process_info *get_thread_process (struct thread_info *); +#include "common/environ.h" /* Target-specific functions */ void initialize_low (); -/* From inferiors.c. */ - -extern struct inferior_list all_processes; -extern struct inferior_list all_threads; -extern struct inferior_list all_dlls; -extern int dlls_changed; -extern void clear_dlls (void); - -void add_inferior_to_list (struct inferior_list *list, - struct inferior_list_entry *new_inferior); -void for_each_inferior (struct inferior_list *list, - void (*action) (struct inferior_list_entry *)); - -extern struct thread_info *current_inferior; -void remove_inferior (struct inferior_list *list, - struct inferior_list_entry *entry); -void remove_thread (struct thread_info *thread); -void add_thread (ptid_t ptid, void *target_data); - -struct process_info *add_process (int pid, int attached); -void remove_process (struct process_info *process); -struct process_info *find_process_pid (int pid); -int have_started_inferiors_p (void); -int have_attached_inferiors_p (void); - -struct thread_info *find_thread_ptid (ptid_t ptid); - -ptid_t thread_id_to_gdb_id (ptid_t); -ptid_t thread_to_gdb_id (struct thread_info *); -ptid_t gdb_id_to_thread_id (ptid_t); -struct thread_info *gdb_id_to_thread (unsigned int); -void clear_inferiors (void); -struct inferior_list_entry *find_inferior - (struct inferior_list *, - int (*func) (struct inferior_list_entry *, - void *), - void *arg); -struct inferior_list_entry *find_inferior_id (struct inferior_list *list, - ptid_t id); -void *inferior_target_data (struct thread_info *); -void set_inferior_target_data (struct thread_info *, void *); -void *inferior_regcache_data (struct thread_info *); -void set_inferior_regcache_data (struct thread_info *, void *); - -void loaded_dll (const char *name, CORE_ADDR base_addr); -void unloaded_dll (const char *name, CORE_ADDR base_addr); - /* Public variables in server.c */ -extern ptid_t cont_thread; -extern ptid_t general_thread; - extern int server_waiting; -extern int debug_threads; -extern int debug_hw_points; -extern int pass_signals[]; -extern int program_signals[]; -extern int program_signals_p; - -extern jmp_buf toplevel; extern int disable_packet_vCont; extern int disable_packet_Tthread; @@ -299,11 +76,8 @@ extern int disable_packet_qC; extern int disable_packet_qfThreadInfo; extern int run_once; -extern int multi_process; extern int non_stop; -extern int disable_randomization; - #if USE_WIN32API #include typedef SOCKET gdb_fildes_t; @@ -311,118 +85,26 @@ typedef SOCKET gdb_fildes_t; typedef int gdb_fildes_t; #endif -/* Functions from event-loop.c. */ -typedef void *gdb_client_data; -typedef int (handler_func) (int, gdb_client_data); -typedef int (callback_handler_func) (gdb_client_data); - -extern void delete_file_handler (gdb_fildes_t fd); -extern void add_file_handler (gdb_fildes_t fd, handler_func *proc, - gdb_client_data client_data); -extern int append_callback_event (callback_handler_func *proc, - gdb_client_data client_data); -extern void delete_callback_event (int id); - -extern void start_event_loop (void); +#include "event-loop.h" /* Functions from server.c. */ +extern void handle_v_requests (char *own_buf, int packet_len, + int *new_packet_len); extern int handle_serial_event (int err, gdb_client_data client_data); extern int handle_target_event (int err, gdb_client_data client_data); -extern void push_event (ptid_t ptid, struct target_waitstatus *status); - -/* Functions from hostio.c. */ -extern int handle_vFile (char *, int, int *); - -/* Functions from hostio-errno.c. */ -extern void hostio_last_error_from_errno (char *own_buf); - -/* From remote-utils.c */ - -extern int remote_debug; -extern int noack_mode; -extern int transport_is_reliable; - -int gdb_connected (void); - -#define STDIO_CONNECTION_NAME "stdio" -int remote_connection_is_stdio (void); - -ptid_t read_ptid (char *buf, char **obuf); -char *write_ptid (char *buf, ptid_t ptid); - -int putpkt (char *buf); -int putpkt_binary (char *buf, int len); -int putpkt_notif (char *buf); -int getpkt (char *buf); -void remote_prepare (char *name); -void remote_open (char *name); -void remote_close (void); -void write_ok (char *buf); -void write_enn (char *buf); -void initialize_async_io (void); -void enable_async_io (void); -void disable_async_io (void); -void check_remote_input_interrupt_request (void); -void convert_ascii_to_int (const char *from, unsigned char *to, int n); -void convert_int_to_ascii (const unsigned char *from, char *to, int n); -void new_thread_notify (int id); -void dead_thread_notify (int id); -void prepare_resume_reply (char *buf, ptid_t ptid, - struct target_waitstatus *status); - -const char *decode_address_to_semicolon (CORE_ADDR *addrp, const char *start); -void decode_address (CORE_ADDR *addrp, const char *start, int len); -void decode_m_packet (char *from, CORE_ADDR * mem_addr_ptr, - unsigned int *len_ptr); -void decode_M_packet (char *from, CORE_ADDR * mem_addr_ptr, - unsigned int *len_ptr, unsigned char **to_p); -int decode_X_packet (char *from, int packet_len, CORE_ADDR * mem_addr_ptr, - unsigned int *len_ptr, unsigned char **to_p); -int decode_xfer_write (char *buf, int packet_len, - CORE_ADDR *offset, unsigned int *len, - unsigned char *data); -int decode_search_memory_packet (const char *buf, int packet_len, - CORE_ADDR *start_addrp, - CORE_ADDR *search_space_lenp, - gdb_byte *pattern, - unsigned int *pattern_lenp); - -int unhexify (char *bin, const char *hex, int count); -int hexify (char *hex, const char *bin, int count); -int remote_escape_output (const gdb_byte *buffer, int len, - gdb_byte *out_buf, int *out_len, - int out_maxlen); -char *unpack_varlen_hex (char *buff, ULONGEST *result); - -void clear_symbol_cache (struct sym_cache **symcache_p); -int look_up_one_symbol (const char *name, CORE_ADDR *addrp, int may_ask_gdb); - -int relocate_instruction (CORE_ADDR *to, CORE_ADDR oldloc); - -void monitor_output (const char *msg); - -/* Functions from utils.c */ -#include "common-utils.h" - -void *xmalloc (size_t) ATTR_MALLOC; -void *xrealloc (void *, size_t); -void *xcalloc (size_t, size_t) ATTR_MALLOC; -char *xstrdup (const char *) ATTR_MALLOC; -int xsnprintf (char *str, size_t size, const char *format, ...) - ATTR_FORMAT (printf, 3, 4);; -void freeargv (char **argv); -void perror_with_name (const char *string); -void error (const char *string,...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2); -void fatal (const char *string,...) ATTR_NORETURN ATTR_FORMAT (printf, 1, 2); -void warning (const char *string,...) ATTR_FORMAT (printf, 1, 2); -char *paddress (CORE_ADDR addr); -char *pulongest (ULONGEST u); -char *plongest (LONGEST l); -char *phex_nz (ULONGEST l, int sizeof_l); -char *pfildes (gdb_fildes_t fd); - -#include "gdb_assert.h" +/* Get rid of the currently pending stop replies that match PTID. */ +extern void discard_queued_stop_replies (ptid_t ptid); + +/* Returns true if there's a pending stop reply that matches PTID in + the vStopped notifications queue. */ +extern int in_queued_stop_replies (ptid_t ptid); + +#include "remote-utils.h" + +#include "utils.h" +#include "debug.h" +#include "common/gdb_vecs.h" /* Maximum number of bytes to read/write at once. The value here is chosen to fill up a packet (the headers account for the 32). */ @@ -431,173 +113,96 @@ char *pfildes (gdb_fildes_t fd); /* Buffer sizes for transferring memory, registers, etc. Set to a constant value to accomodate multiple register formats. This value must be at least as large as the largest register set supported by gdbserver. */ -#define PBUFSIZ 16384 +#define PBUFSIZ 18432 -/* Functions from tracepoint.c */ +/* Definition for an unknown syscall, used basically in error-cases. */ +#define UNKNOWN_SYSCALL (-1) -/* Size for a small buffer to report problems from the in-process - agent back to GDBserver. */ -#define IPA_BUFSIZ 100 +/* Definition for any syscall, used for unfiltered syscall reporting. */ +#define ANY_SYSCALL (-2) -void initialize_tracepoint (void); +/* After fork_inferior has been called, we need to adjust a few + signals and call startup_inferior to start the inferior and consume + its first events. This is done here. PID is the pid of the new + inferior and PROGRAM is its name. */ +extern void post_fork_inferior (int pid, const char *program); -extern int tracing; -extern int disconnected_tracing; +/* Get the gdb_environ being used in the current session. */ +extern gdb_environ *get_environ (); -void tracepoint_look_up_symbols (void); +extern unsigned long signal_pid; -void stop_tracing (void); -int handle_tracepoint_general_set (char *own_buf); -int handle_tracepoint_query (char *own_buf); +/* Description of the client remote protocol state for the currently + connected client. */ -int tracepoint_finished_step (struct thread_info *tinfo, CORE_ADDR stop_pc); -int tracepoint_was_hit (struct thread_info *tinfo, CORE_ADDR stop_pc); - -void release_while_stepping_state_list (struct thread_info *tinfo); - -extern int current_traceframe; - -int in_readonly_region (CORE_ADDR addr, ULONGEST length); -int traceframe_read_mem (int tfnum, CORE_ADDR addr, - unsigned char *buf, ULONGEST length, - ULONGEST *nbytes); -int fetch_traceframe_registers (int tfnum, - struct regcache *regcache, - int regnum); - -int traceframe_read_sdata (int tfnum, ULONGEST offset, - unsigned char *buf, ULONGEST length, - ULONGEST *nbytes); - -int traceframe_read_info (int tfnum, struct buffer *buffer); - -/* If a thread is determined to be collecting a fast tracepoint, this - structure holds the collect status. */ - -struct fast_tpoint_collect_status +struct client_state { - /* The tracepoint that is presently being collected. */ - int tpoint_num; - CORE_ADDR tpoint_addr; - - /* The address range in the jump pad of where the original - instruction the tracepoint jump was inserted was relocated - to. */ - CORE_ADDR adjusted_insn_addr; - CORE_ADDR adjusted_insn_addr_end; -}; - -int fast_tracepoint_collecting (CORE_ADDR thread_area, - CORE_ADDR stop_pc, - struct fast_tpoint_collect_status *status); -void force_unlock_trace_buffer (void); - -int handle_tracepoint_bkpts (struct thread_info *tinfo, CORE_ADDR stop_pc); - -#ifdef IN_PROCESS_AGENT -void initialize_low_tracepoint (void); -void supply_fast_tracepoint_registers (struct regcache *regcache, - const unsigned char *regs); -void supply_static_tracepoint_registers (struct regcache *regcache, - const unsigned char *regs, - CORE_ADDR pc); -void set_trampoline_buffer_space (CORE_ADDR begin, CORE_ADDR end, - char *errmsg); -#else -void stop_tracing (void); - -int claim_trampoline_space (ULONGEST used, CORE_ADDR *trampoline); -int have_fast_tracepoint_trampoline_buffer (char *msgbuf); -#endif - -struct traceframe; - -/* Do memory copies for bytecodes. */ -/* Do the recording of memory blocks for actions and bytecodes. */ - -int agent_mem_read (struct traceframe *tframe, - unsigned char *to, CORE_ADDR from, - ULONGEST len); + client_state (): + own_buf ((char *) xmalloc (PBUFSIZ + 1)) + {} + + /* The thread set with an `Hc' packet. `Hc' is deprecated in favor of + `vCont'. Note the multi-process extensions made `vCont' a + requirement, so `Hc pPID.TID' is pretty much undefined. So + CONT_THREAD can be null_ptid for no `Hc' thread, minus_one_ptid for + resuming all threads of the process (again, `Hc' isn't used for + multi-process), or a specific thread ptid_t. */ + ptid_t cont_thread; + + /* The thread set with an `Hg' packet. */ + ptid_t general_thread; + + int multi_process = 0; + int report_fork_events = 0; + int report_vfork_events = 0; + int report_exec_events = 0; + int report_thread_events = 0; + + /* True if the "swbreak+" feature is active. In that case, GDB wants + us to report whether a trap is explained by a software breakpoint + and for the server to handle PC adjustment if necessary on this + target. Only enabled if the target supports it. */ + int swbreak_feature = 0; + /* True if the "hwbreak+" feature is active. In that case, GDB wants + us to report whether a trap is explained by a hardware breakpoint. + Only enabled if the target supports it. */ + int hwbreak_feature = 0; + + /* True if the "vContSupported" feature is active. In that case, GDB + wants us to report whether single step is supported in the reply to + "vCont?" packet. */ + int vCont_supported = 0; + + /* Whether we should attempt to disable the operating system's address + space randomization feature before starting an inferior. */ + int disable_randomization = 1; + + int pass_signals[GDB_SIGNAL_LAST]; + int program_signals[GDB_SIGNAL_LAST]; + int program_signals_p = 0; + + /* Last status reported to GDB. */ + struct target_waitstatus last_status; + ptid_t last_ptid; -LONGEST agent_get_trace_state_variable_value (int num); -void agent_set_trace_state_variable_value (int num, LONGEST val); + char *own_buf; -/* Record the value of a trace state variable. */ + /* If true, then GDB has requested noack mode. */ + int noack_mode = 0; + /* If true, then we tell GDB to use noack mode by default. */ + int transport_is_reliable = 0; -int agent_tsv_read (struct traceframe *tframe, int n); -int agent_mem_read_string (struct traceframe *tframe, - unsigned char *to, - CORE_ADDR from, - ULONGEST len); + /* The traceframe to be used as the source of data to send back to + GDB. A value of -1 means to get data from the live program. */ -/* Bytecode compilation function vector. */ + int current_traceframe = -1; -struct emit_ops -{ - void (*emit_prologue) (void); - void (*emit_epilogue) (void); - void (*emit_add) (void); - void (*emit_sub) (void); - void (*emit_mul) (void); - void (*emit_lsh) (void); - void (*emit_rsh_signed) (void); - void (*emit_rsh_unsigned) (void); - void (*emit_ext) (int arg); - void (*emit_log_not) (void); - void (*emit_bit_and) (void); - void (*emit_bit_or) (void); - void (*emit_bit_xor) (void); - void (*emit_bit_not) (void); - void (*emit_equal) (void); - void (*emit_less_signed) (void); - void (*emit_less_unsigned) (void); - void (*emit_ref) (int size); - void (*emit_if_goto) (int *offset_p, int *size_p); - void (*emit_goto) (int *offset_p, int *size_p); - void (*write_goto_address) (CORE_ADDR from, CORE_ADDR to, int size); - void (*emit_const) (LONGEST num); - void (*emit_call) (CORE_ADDR fn); - void (*emit_reg) (int reg); - void (*emit_pop) (void); - void (*emit_stack_flush) (void); - void (*emit_zero_ext) (int arg); - void (*emit_swap) (void); - void (*emit_stack_adjust) (int n); - - /* Emit code for a generic function that takes one fixed integer - argument and returns a 64-bit int (for instance, tsv getter). */ - void (*emit_int_call_1) (CORE_ADDR fn, int arg1); - - /* Emit code for a generic function that takes one fixed integer - argument and a 64-bit int from the top of the stack, and returns - nothing (for instance, tsv setter). */ - void (*emit_void_call_2) (CORE_ADDR fn, int arg1); - - /* Emit code specialized for common combinations of compare followed - by a goto. */ - void (*emit_eq_goto) (int *offset_p, int *size_p); - void (*emit_ne_goto) (int *offset_p, int *size_p); - void (*emit_lt_goto) (int *offset_p, int *size_p); - void (*emit_le_goto) (int *offset_p, int *size_p); - void (*emit_gt_goto) (int *offset_p, int *size_p); - void (*emit_ge_goto) (int *offset_p, int *size_p); }; -/* Returns the address of the get_raw_reg function in the IPA. */ -CORE_ADDR get_raw_reg_func_addr (void); -/* Returns the address of the get_trace_state_variable_value - function in the IPA. */ -CORE_ADDR get_get_tsv_func_addr (void); -/* Returns the address of the set_trace_state_variable_value - function in the IPA. */ -CORE_ADDR get_set_tsv_func_addr (void); - -CORE_ADDR current_insn_ptr; -int emit_error; - -/* Version information, from version.c. */ -extern const char version[]; -extern const char host_name[]; +client_state &get_client_state (); + +#include "gdbthread.h" +#include "inferiors.h" #endif /* SERVER_H */