/* Common definitions for remote server for GDB.
- Copyright (C) 1993-2013 Free Software Foundation, Inc.
+ Copyright (C) 1993-2020 Free Software Foundation, Inc.
This file is part of GDB.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
-#ifndef SERVER_H
-#define SERVER_H
+#ifndef GDBSERVER_SERVER_H
+#define GDBSERVER_SERVER_H
-#include "config.h"
-#include "build-gnulib-gdbserver/config.h"
+#include "gdbsupport/common-defs.h"
+
+gdb_static_assert (sizeof (CORE_ADDR) >= sizeof (void *));
#ifdef __MINGW32CE__
#include "wincecompat.h"
#endif
-#include "libiberty.h"
-#include "ansidecl.h"
-
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#include <setjmp.h>
-
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
-
-#ifdef HAVE_ALLOCA_H
-#include <alloca.h>
-#endif
-/* On some systems such as MinGW, alloca is declared in malloc.h
- (there is no alloca.h). */
-#if HAVE_MALLOC_H
-#include <malloc.h>
-#endif
-
-#if !HAVE_DECL_STRERROR
-#ifndef strerror
-extern char *strerror (int); /* X3.159-1989 4.11.6.2 */
-#endif
-#endif
+#include "gdbsupport/version.h"
#if !HAVE_DECL_PERROR
#ifndef perror
int vsnprintf(char *str, size_t size, const char *format, va_list ap);
#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;
-struct target_desc;
-
+#include "gdbsupport/buffer.h"
+#include "gdbsupport/xml-utils.h"
#include "regcache.h"
-#include "gdb/signals.h"
-#include "gdb_signals.h"
+#include "gdbsupport/gdb_signals.h"
#include "target.h"
#include "mem-break.h"
-#include "gdbthread.h"
-
-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;
-
- const struct target_desc *tdesc;
-
- /* 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 "gdbsupport/environ.h"
/* Target-specific functions */
void initialize_low ();
-/* From inferiors.c. */
-
-extern struct inferior_list all_processes;
-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);
-
-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);
-
-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);
-
-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 bool server_waiting;
-extern int disable_packet_vCont;
-extern int disable_packet_Tthread;
-extern int disable_packet_qC;
-extern int disable_packet_qfThreadInfo;
+extern bool disable_packet_vCont;
+extern bool disable_packet_Tthread;
+extern bool disable_packet_qC;
+extern bool disable_packet_qfThreadInfo;
-extern int run_once;
-extern int multi_process;
-extern int non_stop;
-
-extern int disable_randomization;
+extern bool run_once;
+extern bool non_stop;
#if USE_WIN32API
#include <winsock2.h>
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);
-extern void initialize_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);
-/* 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 perror_with_name (const char *string);
-void error (const char *string,...) ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (1, 2);
-void fatal (const char *string,...) ATTRIBUTE_NORETURN ATTRIBUTE_PRINTF (1, 2);
-void warning (const char *string,...) ATTRIBUTE_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 "gdbsupport/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). */
/* 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
-
-/* Functions from tracepoint.c */
-
-/* Size for a small buffer to report problems from the in-process
- agent back to GDBserver. */
-#define IPA_BUFSIZ 100
-
-void initialize_tracepoint (void);
-
-extern int tracing;
-extern int disconnected_tracing;
+#define PBUFSIZ 18432
-void tracepoint_look_up_symbols (void);
+/* Definition for an unknown syscall, used basically in error-cases. */
+#define UNKNOWN_SYSCALL (-1)
-void stop_tracing (void);
+/* Definition for any syscall, used for unfiltered syscall reporting. */
+#define ANY_SYSCALL (-2)
-int handle_tracepoint_general_set (char *own_buf);
-int handle_tracepoint_query (char *own_buf);
+/* 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);
-int tracepoint_finished_step (struct thread_info *tinfo, CORE_ADDR stop_pc);
-int tracepoint_was_hit (struct thread_info *tinfo, CORE_ADDR stop_pc);
+/* Get the gdb_environ being used in the current session. */
+extern gdb_environ *get_environ ();
-void release_while_stepping_state_list (struct thread_info *tinfo);
+extern unsigned long signal_pid;
-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);
+/* Description of the client remote protocol state for the currently
+ connected client. */
-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;
-};
+ 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;
+
+ char *own_buf;
+
+ /* 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;
+
+ /* 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. */
+
+ int current_traceframe = -1;
-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);
-
-extern const struct target_desc *ipa_tdesc;
-
-#else
-void stop_tracing (void);
-
-int claim_trampoline_space (ULONGEST used, CORE_ADDR *trampoline);
-int have_fast_tracepoint_trampoline_buffer (char *msgbuf);
-void gdb_agent_about_to_close (int pid);
-#endif
-
-struct traceframe;
-struct eval_agent_expr_context;
-
-/* Do memory copies for bytecodes. */
-/* Do the recording of memory blocks for actions and bytecodes. */
-
-int agent_mem_read (struct eval_agent_expr_context *ctx,
- unsigned char *to, CORE_ADDR from,
- ULONGEST len);
-
-LONGEST agent_get_trace_state_variable_value (int num);
-void agent_set_trace_state_variable_value (int num, LONGEST val);
-
-/* Record the value of a trace state variable. */
-
-int agent_tsv_read (struct eval_agent_expr_context *ctx, int n);
-int agent_mem_read_string (struct eval_agent_expr_context *ctx,
- unsigned char *to,
- CORE_ADDR from,
- ULONGEST len);
-
-/* Bytecode compilation function vector. */
-
-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);
+client_state &get_client_state ();
-extern CORE_ADDR current_insn_ptr;
-extern int emit_error;
-
-/* Version information, from version.c. */
-extern const char version[];
-extern const char host_name[];
+#include "gdbthread.h"
+#include "inferiors.h"
-#endif /* SERVER_H */
+#endif /* GDBSERVER_SERVER_H */
projects / deliverable / binutils-gdb.git / blobdiff