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/* Internal interfaces for the Win32 specific target code for gdbserver.
Copyright (C) 2007-2024 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
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 GDBSERVER_WIN32_LOW_H
#define GDBSERVER_WIN32_LOW_H
#include <windows.h>
#include "nat/windows-nat.h"
#include "gdbsupport/osabi.h"
struct target_desc;
/* The inferior's target description. This is a global because the
Windows ports support neither bi-arch nor multi-process. */
extern const struct target_desc *win32_tdesc;
#ifdef __x86_64__
extern const struct target_desc *wow64_win32_tdesc;
#endif
#ifdef __CYGWIN__
constexpr enum gdb_osabi WINDOWS_OSABI = GDB_OSABI_CYGWIN;
#else
constexpr enum gdb_osabi WINDOWS_OSABI = GDB_OSABI_WINDOWS;
#endif
struct win32_target_ops
{
/* Architecture-specific setup. */
void (*arch_setup) (void);
/* The number of target registers. */
int (*num_regs) (void);
/* Perform initializations on startup. */
void (*initial_stuff) (void);
/* Fetch the context from the inferior. */
void (*get_thread_context) (windows_nat::windows_thread_info *th);
/* Called just before resuming the thread. */
void (*prepare_to_resume) (windows_nat::windows_thread_info *th);
/* Called when a thread was added. */
void (*thread_added) (windows_nat::windows_thread_info *th);
/* Fetch register from gdbserver regcache data. */
void (*fetch_inferior_register) (struct regcache *regcache,
windows_nat::windows_thread_info *th,
int r);
/* Store a new register value into the thread context of TH. */
void (*store_inferior_register) (struct regcache *regcache,
windows_nat::windows_thread_info *th,
int r);
void (*single_step) (windows_nat::windows_thread_info *th);
const unsigned char *breakpoint;
int breakpoint_len;
/* Amount by which to decrement the PC after a breakpoint is
hit. */
int decr_pc_after_break;
/* Get the PC register from REGCACHE. */
CORE_ADDR (*get_pc) (struct regcache *regcache);
/* Set the PC register in REGCACHE. */
void (*set_pc) (struct regcache *regcache, CORE_ADDR newpc);
/* Breakpoint/Watchpoint related functions. See target.h for comments. */
int (*supports_z_point_type) (char z_type);
int (*insert_point) (enum raw_bkpt_type type, CORE_ADDR addr,
int size, struct raw_breakpoint *bp);
int (*remove_point) (enum raw_bkpt_type type, CORE_ADDR addr,
int size, struct raw_breakpoint *bp);
int (*stopped_by_watchpoint) (void);
CORE_ADDR (*stopped_data_address) (void);
};
extern struct win32_target_ops the_low_target;
/* Target ops definitions for a Win32 target. */
class win32_process_target : public process_stratum_target
{
public:
int create_inferior (const char *program,
const std::vector<char *> &program_args) override;
int attach (unsigned long pid) override;
int kill (process_info *proc) override;
int detach (process_info *proc) override;
void mourn (process_info *proc) override;
void join (int pid) override;
bool thread_alive (ptid_t pid) override;
void resume (thread_resume *resume_info, size_t n) override;
ptid_t wait (ptid_t ptid, target_waitstatus *status,
target_wait_flags options) override;
void fetch_registers (regcache *regcache, int regno) override;
void store_registers (regcache *regcache, int regno) override;
int read_memory (CORE_ADDR memaddr, unsigned char *myaddr,
int len) override;
int write_memory (CORE_ADDR memaddr, const unsigned char *myaddr,
int len) override;
void request_interrupt () override;
bool supports_z_point_type (char z_type) override;
int insert_point (enum raw_bkpt_type type, CORE_ADDR addr,
int size, raw_breakpoint *bp) override;
int remove_point (enum raw_bkpt_type type, CORE_ADDR addr,
int size, raw_breakpoint *bp) override;
bool supports_hardware_single_step () override;
bool stopped_by_watchpoint () override;
CORE_ADDR stopped_data_address () override;
bool supports_qxfer_siginfo () override;
int qxfer_siginfo (const char *annex, unsigned char *readbuf,
unsigned const char *writebuf,
CORE_ADDR offset, int len) override;
bool supports_get_tib_address () override;
int get_tib_address (ptid_t ptid, CORE_ADDR *addr) override;
const gdb_byte *sw_breakpoint_from_kind (int kind, int *size) override;
CORE_ADDR read_pc (regcache *regcache) override;
void write_pc (regcache *regcache, CORE_ADDR pc) override;
bool stopped_by_sw_breakpoint () override;
bool supports_stopped_by_sw_breakpoint () override;
const char *thread_name (ptid_t thread) override;
bool supports_pid_to_exec_file () override
{ return true; }
const char *pid_to_exec_file (int pid) override;
bool supports_disable_randomization () override
{
return windows_nat::disable_randomization_available ();
}
};
struct gdbserver_windows_process : public windows_nat::windows_process_info
{
windows_nat::windows_thread_info *thread_rec
(ptid_t ptid,
windows_nat::thread_disposition_type disposition) override;
int handle_output_debug_string (struct target_waitstatus *ourstatus) override;
void handle_load_dll (const char *dll_name, LPVOID base) override;
void handle_unload_dll () override;
bool handle_access_violation (const EXCEPTION_RECORD *rec) override;
int attaching = 0;
/* A status that hasn't been reported to the core yet, and so
win32_wait should return it next, instead of fetching the next
debug event off the win32 API. */
struct target_waitstatus cached_status;
/* Non zero if an interrupt request is to be satisfied by suspending
all threads. */
int soft_interrupt_requested = 0;
/* Non zero if the inferior is stopped in a simulated breakpoint done
by suspending all the threads. */
int faked_breakpoint = 0;
/* True if current_process_handle needs to be closed. */
bool open_process_used = false;
/* Zero during the child initialization phase, and nonzero
otherwise. */
int child_initialization_done = 0;
};
/* The sole Windows process. */
extern gdbserver_windows_process windows_process;
/* Retrieve the context for this thread, if not already retrieved. */
extern void win32_require_context (windows_nat::windows_thread_info *th);
#endif /* GDBSERVER_WIN32_LOW_H */
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