/* Variables that describe the inferior process running under GDB:
Where it is, why it stopped, and how to step it.
- Copyright 1986, 1989, 1992, 1996, 1998 Free Software Foundation, Inc.
+
+ Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+ 1996, 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
This file is part of GDB.
#if !defined (INFERIOR_H)
#define INFERIOR_H 1
+struct target_waitstatus;
+struct frame_info;
+struct ui_file;
+struct type;
+struct gdbarch;
+struct regcache;
+
/* For bpstat. */
#include "breakpoint.h"
/* For enum target_signal. */
#include "target.h"
+/* For struct frame_id. */
+#include "frame.h"
+
/* Structure in which to save the status of the inferior. Create/Save
through "save_inferior_status", restore through
"restore_inferior_status".
control to the inferior which you don't want showing up in your
control variables. */
-#ifdef __STDC__
struct inferior_status;
-#endif
-extern struct inferior_status *save_inferior_status PARAMS ((int));
+extern struct inferior_status *save_inferior_status (int);
-extern void restore_inferior_status PARAMS ((struct inferior_status *));
+extern void restore_inferior_status (struct inferior_status *);
-extern void discard_inferior_status PARAMS ((struct inferior_status *));
+extern struct cleanup *make_cleanup_restore_inferior_status (struct inferior_status *);
-extern void write_inferior_status_register PARAMS ((struct inferior_status * inf_status, int regno, LONGEST val));
+extern void discard_inferior_status (struct inferior_status *);
-/* This macro gives the number of registers actually in use by the
- inferior. This may be less than the total number of registers,
- perhaps depending on the actual CPU in use or program being run. */
+extern void write_inferior_status_register (struct inferior_status
+ *inf_status, int regno,
+ LONGEST val);
-#ifndef ARCH_NUM_REGS
-#define ARCH_NUM_REGS NUM_REGS
-#endif
+/* The -1 ptid, often used to indicate either an error condition
+ or a "don't care" condition, i.e, "run all threads." */
+extern ptid_t minus_one_ptid;
+
+/* The null or zero ptid, often used to indicate no process. */
+extern ptid_t null_ptid;
+
+/* Attempt to find and return an existing ptid with the given PID, LWP,
+ and TID components. If none exists, create a new one and return
+ that. */
+ptid_t ptid_build (int pid, long lwp, long tid);
+
+/* Find/Create a ptid from just a pid. */
+ptid_t pid_to_ptid (int pid);
+
+/* Fetch the pid (process id) component from a ptid. */
+int ptid_get_pid (ptid_t ptid);
-extern void set_sigint_trap PARAMS ((void));
+/* Fetch the lwp (lightweight process) component from a ptid. */
+long ptid_get_lwp (ptid_t ptid);
-extern void clear_sigint_trap PARAMS ((void));
+/* Fetch the tid (thread id) component from a ptid. */
+long ptid_get_tid (ptid_t ptid);
-extern void set_sigio_trap PARAMS ((void));
+/* Compare two ptids to see if they are equal */
+extern int ptid_equal (ptid_t p1, ptid_t p2);
-extern void clear_sigio_trap PARAMS ((void));
+/* Save value of inferior_ptid so that it may be restored by
+ a later call to do_cleanups(). Returns the struct cleanup
+ pointer needed for later doing the cleanup. */
+extern struct cleanup * save_inferior_ptid (void);
+
+extern void set_sigint_trap (void);
+
+extern void clear_sigint_trap (void);
+
+extern void set_sigio_trap (void);
+
+extern void clear_sigio_trap (void);
/* File name for default use for standard in/out in the inferior. */
extern char *inferior_io_terminal;
-/* Pid of our debugged inferior, or 0 if no inferior now. */
+/* Collected pid, tid, etc. of the debugged inferior. When there's
+ no inferior, PIDGET (inferior_ptid) will be 0. */
-extern int inferior_pid;
+extern ptid_t inferior_ptid;
/* Is the inferior running right now, as a result of a 'run&',
'continue&' etc command? This is used in asycn gdb to determine
redisplay the prompt until the execution is actually over. */
extern int sync_execution;
-/* This is only valid when inferior_pid is non-zero.
+/* This is only valid when inferior_ptid is non-zero.
If this is 0, then exec events should be noticed and responded to
by the debugger (i.e., be reported to the user).
extern struct environ *inferior_environ;
-/* Character array containing an image of the inferior programs'
- registers. */
-
-extern char *registers;
+extern void clear_proceed_status (void);
-/* Character array containing the current state of each register
- (unavailable<0, valid=0, invalid>0). */
+extern void proceed (CORE_ADDR, enum target_signal, int);
-extern signed char *register_valid;
+/* When set, stop the 'step' command if we enter a function which has
+ no line number information. The normal behavior is that we step
+ over such function. */
+extern int step_stop_if_no_debug;
-extern void clear_proceed_status PARAMS ((void));
+extern void kill_inferior (void);
-extern void proceed PARAMS ((CORE_ADDR, enum target_signal, int));
+extern void generic_mourn_inferior (void);
-extern void kill_inferior PARAMS ((void));
+extern void terminal_save_ours (void);
-extern void generic_mourn_inferior PARAMS ((void));
+extern void terminal_ours (void);
-extern void terminal_ours PARAMS ((void));
+extern int run_stack_dummy (CORE_ADDR , struct regcache *);
-extern int run_stack_dummy PARAMS ((CORE_ADDR, char *));
+extern CORE_ADDR read_pc (void);
-extern CORE_ADDR read_pc PARAMS ((void));
+extern CORE_ADDR read_pc_pid (ptid_t);
-extern CORE_ADDR read_pc_pid PARAMS ((int));
+extern CORE_ADDR generic_target_read_pc (ptid_t);
-extern CORE_ADDR generic_target_read_pc PARAMS ((int));
+extern void write_pc (CORE_ADDR);
-extern void write_pc PARAMS ((CORE_ADDR));
+extern void write_pc_pid (CORE_ADDR, ptid_t);
-extern void write_pc_pid PARAMS ((CORE_ADDR, int));
+extern void generic_target_write_pc (CORE_ADDR, ptid_t);
-extern void generic_target_write_pc PARAMS ((CORE_ADDR, int));
+extern CORE_ADDR read_sp (void);
-extern CORE_ADDR read_sp PARAMS ((void));
+extern CORE_ADDR generic_target_read_sp (void);
-extern CORE_ADDR generic_target_read_sp PARAMS ((void));
+extern void generic_target_write_sp (CORE_ADDR);
-extern void write_sp PARAMS ((CORE_ADDR));
+extern CORE_ADDR read_fp (void);
-extern void generic_target_write_sp PARAMS ((CORE_ADDR));
+extern CORE_ADDR generic_target_read_fp (void);
-extern CORE_ADDR read_fp PARAMS ((void));
+extern CORE_ADDR unsigned_pointer_to_address (struct type *type, const void *buf);
-extern CORE_ADDR generic_target_read_fp PARAMS ((void));
+extern void unsigned_address_to_pointer (struct type *type, void *buf,
+ CORE_ADDR addr);
+extern CORE_ADDR signed_pointer_to_address (struct type *type,
+ const void *buf);
+extern void address_to_signed_pointer (struct type *type, void *buf,
+ CORE_ADDR addr);
-extern void write_fp PARAMS ((CORE_ADDR));
+extern void wait_for_inferior (void);
-extern void generic_target_write_fp PARAMS ((CORE_ADDR));
+extern void fetch_inferior_event (void *);
-extern void wait_for_inferior PARAMS ((void));
+extern void init_wait_for_inferior (void);
-extern void fetch_inferior_event PARAMS ((void));
+extern void close_exec_file (void);
-extern void init_wait_for_inferior PARAMS ((void));
-
-extern void close_exec_file PARAMS ((void));
-
-extern void reopen_exec_file PARAMS ((void));
+extern void reopen_exec_file (void);
/* The `resume' routine should only be called in special circumstances.
Normally, use `proceed', which handles a lot of bookkeeping. */
-extern void resume PARAMS ((int, enum target_signal));
+extern void resume (int, enum target_signal);
/* From misc files */
-extern void store_inferior_registers PARAMS ((int));
+extern void default_print_registers_info (struct gdbarch *gdbarch,
+ struct ui_file *file,
+ struct frame_info *frame,
+ int regnum, int all);
-extern void fetch_inferior_registers PARAMS ((int));
+extern void store_inferior_registers (int);
-extern void solib_create_inferior_hook PARAMS ((void));
+extern void fetch_inferior_registers (int);
-extern void child_terminal_info PARAMS ((char *, int));
+extern void solib_create_inferior_hook (void);
-extern void term_info PARAMS ((char *, int));
+extern void child_terminal_info (char *, int);
-extern void terminal_ours_for_output PARAMS ((void));
+extern void term_info (char *, int);
-extern void terminal_inferior PARAMS ((void));
+extern void terminal_ours_for_output (void);
-extern void terminal_init_inferior PARAMS ((void));
+extern void terminal_inferior (void);
-extern void terminal_init_inferior_with_pgrp PARAMS ((int pgrp));
-
-/* From infptrace.c or infttrace.c */
+extern void terminal_init_inferior (void);
-extern int attach PARAMS ((int));
+extern void terminal_init_inferior_with_pgrp (int pgrp);
-#if !defined(REQUIRE_ATTACH)
-#define REQUIRE_ATTACH attach
-#endif
+/* From infptrace.c or infttrace.c */
-#if !defined(REQUIRE_DETACH)
-#define REQUIRE_DETACH(pid,siggnal) detach (siggnal)
-#endif
+extern int attach (int);
-extern void detach PARAMS ((int));
+extern void detach (int);
/* PTRACE method of waiting for inferior process. */
-int ptrace_wait PARAMS ((int, int *));
+int ptrace_wait (ptid_t, int *);
-extern void child_resume PARAMS ((int, int, enum target_signal));
+extern void child_resume (ptid_t, int, enum target_signal);
#ifndef PTRACE_ARG3_TYPE
#define PTRACE_ARG3_TYPE int /* Correct definition for most systems. */
#endif
-extern int call_ptrace PARAMS ((int, int, PTRACE_ARG3_TYPE, int));
+extern int call_ptrace (int, int, PTRACE_ARG3_TYPE, int);
-extern void pre_fork_inferior PARAMS ((void));
+extern void pre_fork_inferior (void);
/* From procfs.c */
-extern int proc_iterate_over_mappings PARAMS ((int (*)(int, CORE_ADDR)));
+extern int proc_iterate_over_mappings (int (*)(int, CORE_ADDR));
-extern int procfs_first_available PARAMS ((void));
-
-extern int procfs_get_pid_fd PARAMS ((int));
+extern ptid_t procfs_first_available (void);
/* From fork-child.c */
-extern void fork_inferior PARAMS ((char *, char *, char **,
- void (*)(void),
- void (*)(int),
- void (*)(void),
- char *));
+extern void fork_inferior (char *, char *, char **,
+ void (*)(void),
+ void (*)(int), void (*)(void), char *);
-extern void
-clone_and_follow_inferior PARAMS ((int, int *));
+extern void startup_inferior (int);
-extern void startup_inferior PARAMS ((int));
+extern char *construct_inferior_arguments (struct gdbarch *, int, char **);
/* From inflow.c */
-extern void new_tty_prefork PARAMS ((char *));
+extern void new_tty_prefork (char *);
-extern int gdb_has_a_terminal PARAMS ((void));
+extern int gdb_has_a_terminal (void);
/* From infrun.c */
-extern void start_remote PARAMS ((void));
+extern void start_remote (void);
+
+extern void normal_stop (void);
+
+extern int signal_stop_state (int);
+
+extern int signal_print_state (int);
+
+extern int signal_pass_state (int);
+
+extern int signal_stop_update (int, int);
-extern void normal_stop PARAMS ((void));
+extern int signal_print_update (int, int);
-extern int signal_stop_state PARAMS ((int));
+extern int signal_pass_update (int, int);
-extern int signal_print_state PARAMS ((int));
+extern void get_last_target_status(ptid_t *ptid,
+ struct target_waitstatus *status);
-extern int signal_pass_state PARAMS ((int));
+extern void follow_inferior_reset_breakpoints (void);
/* From infcmd.c */
-extern void tty_command PARAMS ((char *, int));
+extern void tty_command (char *, int);
-extern void attach_command PARAMS ((char *, int));
+extern void attach_command (char *, int);
+
+extern char *get_inferior_args (void);
+
+extern char *set_inferior_args (char *);
+
+extern void set_inferior_args_vector (int, char **);
+
+extern void registers_info (char *, int);
+
+extern void nexti_command (char *, int);
+
+extern void stepi_command (char *, int);
+
+extern void continue_command (char *, int);
+
+extern void interrupt_target_command (char *args, int from_tty);
/* Last signal that the inferior received (why it stopped). */
This is how we know when we step into a subroutine call,
and how to set the frame for the breakpoint used to step out. */
-extern CORE_ADDR step_frame_address;
+extern struct frame_id step_frame_id;
/* Our notion of the current stack pointer. */
/* 1 means step over all subroutine calls.
-1 means step over calls to undebuggable functions. */
-extern int step_over_calls;
+enum step_over_calls_kind
+ {
+ STEP_OVER_NONE,
+ STEP_OVER_ALL,
+ STEP_OVER_UNDEBUGGABLE
+ };
+
+extern enum step_over_calls_kind step_over_calls;
/* If stepping, nonzero means step count is > 1
so don't print frame next time inferior stops
extern int step_multi;
-/* Nonzero means expecting a trap and caller will handle it themselves.
- It is used after attach, due to attaching to a process;
- when running in the shell before the child program has been exec'd;
- and when running some kinds of remote stuff (FIXME?). */
-
-extern int stop_soon_quietly;
+/* Nonzero means expecting a trap and caller will handle it
+ themselves. It is used when running in the shell before the child
+ program has been exec'd; and when running some kinds of remote
+ stuff (FIXME?). */
+
+/* It is also used after attach, due to attaching to a process. This
+ is a bit trickier. When doing an attach, the kernel stops the
+ debuggee with a SIGSTOP. On newer GNU/Linux kernels (>= 2.5.61)
+ the handling of SIGSTOP for a ptraced process has changed. Earlier
+ versions of the kernel would ignore these SIGSTOPs, while now
+ SIGSTOP is treated like any other signal, i.e. it is not muffled.
+
+ If the gdb user does a 'continue' after the 'attach', gdb passes
+ the global variable stop_signal (which stores the signal from the
+ attach, SIGSTOP) to the ptrace(PTRACE_CONT,...) call. This is
+ problematic, because the kernel doesn't ignore such SIGSTOP
+ now. I.e. it is reported back to gdb, which in turn presents it
+ back to the user.
+
+ To avoid the problem, we use STOP_QUIETLY_NO_SIGSTOP, which allows
+ gdb to clear the value of stop_signal after the attach, so that it
+ is not passed back down to the kernel. */
+
+enum stop_kind
+ {
+ NO_STOP_QUIETLY = 0,
+ STOP_QUIETLY,
+ STOP_QUIETLY_NO_SIGSTOP
+ };
+
+extern enum stop_kind stop_soon;
/* Nonzero if proceed is being used for a "finish" command or a similar
situation when stop_registers should be saved. */
Thus this contains the return value from the called function (assuming
values are returned in a register). */
-extern char *stop_registers;
+extern struct regcache *stop_registers;
-/* Nonzero if the child process in inferior_pid was attached rather
+/* Nonzero if the child process in inferior_ptid was attached rather
than forked. */
extern int attach_flag;
\f
-/* Sigtramp is a routine that the kernel calls (which then calls the
- signal handler). On most machines it is a library routine that
- is linked into the executable.
-
- This macro, given a program counter value and the name of the
- function in which that PC resides (which can be null if the
- name is not known), returns nonzero if the PC and name show
- that we are in sigtramp.
-
- On most machines just see if the name is sigtramp (and if we have
- no name, assume we are not in sigtramp). */
-#if !defined (IN_SIGTRAMP)
-#if defined (SIGTRAMP_START)
-#define IN_SIGTRAMP(pc, name) \
- ((pc) >= SIGTRAMP_START(pc) \
- && (pc) < SIGTRAMP_END(pc) \
- )
-#else
-#define IN_SIGTRAMP(pc, name) \
- (name && STREQ ("_sigtramp", name))
-#endif
-#endif
-\f
/* Possible values for CALL_DUMMY_LOCATION. */
#define ON_STACK 1
-#define BEFORE_TEXT_END 2
-#define AFTER_TEXT_END 3
#define AT_ENTRY_POINT 4
-#if !defined (USE_GENERIC_DUMMY_FRAMES)
-#define USE_GENERIC_DUMMY_FRAMES 0
-#endif
-
-#if !defined (CALL_DUMMY_LOCATION)
-#define CALL_DUMMY_LOCATION ON_STACK
-#endif /* No CALL_DUMMY_LOCATION. */
-
-#if !defined (CALL_DUMMY_ADDRESS)
-#define CALL_DUMMY_ADDRESS() (abort (), 0) /* anything to abort GDB */
-#endif
-#if !defined (CALL_DUMMY_START_OFFSET)
-#define CALL_DUMMY_START_OFFSET (abort (), 0) /* anything to abort GDB */
-#endif
-#if !defined (CALL_DUMMY_BREAKPOINT_OFFSET)
-#define CALL_DUMMY_BREAKPOINT_OFFSET_P (0)
-#define CALL_DUMMY_BREAKPOINT_OFFSET (abort (), 0) /* anything to abort GDB */
-#endif
-#if !defined CALL_DUMMY_BREAKPOINT_OFFSET_P
-#define CALL_DUMMY_BREAKPOINT_OFFSET_P (1)
-#endif
-#if !defined (CALL_DUMMY_LENGTH)
-#define CALL_DUMMY_LENGTH (abort (), 0) /* anything to abort GDB */
-#endif
-
-#if defined (CALL_DUMMY_STACK_ADJUST)
-#if !defined (CALL_DUMMY_STACK_ADJUST_P)
-#define CALL_DUMMY_STACK_ADJUST_P (1)
-#endif
-#endif
-#if !defined (CALL_DUMMY_STACK_ADJUST)
-#define CALL_DUMMY_STACK_ADJUST (abort (), 0)
-#endif
-#if !defined (CALL_DUMMY_STACK_ADJUST_P)
-#define CALL_DUMMY_STACK_ADJUST_P (0)
-#endif
-
-#if !defined (CALL_DUMMY_P)
-#if defined (CALL_DUMMY)
-#define CALL_DUMMY_P 1
-#else
-#define CALL_DUMMY_P 0
-#endif
-#endif
-
-#if !defined (CALL_DUMMY_WORDS)
-#if defined (CALL_DUMMY)
-extern LONGEST call_dummy_words[];
-#define CALL_DUMMY_WORDS (call_dummy_words)
-#else
-#define CALL_DUMMY_WORDS (abort (), (void*) 0) /* anything to abort GDB */
-#endif
-#endif
-
-#if !defined (SIZEOF_CALL_DUMMY_WORDS)
-#if defined (CALL_DUMMY)
-extern int sizeof_call_dummy_words;
-#define SIZEOF_CALL_DUMMY_WORDS (sizeof_call_dummy_words)
-#else
-#define SIZEOF_CALL_DUMMY_WORDS (abort (), 0) /* anything to abort GDB */
-#endif
-#endif
+/* FIXME: cagney/2000-04-17: gdbarch should manage this. The default
+ shouldn't be necessary. */
#if !defined PUSH_DUMMY_FRAME
-#define PUSH_DUMMY_FRAME (abort ())
-#endif
-
-#if !defined FIX_CALL_DUMMY
-#define FIX_CALL_DUMMY(a1,a2,a3,a4,a5,a6,a7) (abort ())
+#define PUSH_DUMMY_FRAME (internal_error (__FILE__, __LINE__, "PUSH_DUMMY_FRAME"), 0)
#endif
#if !defined STORE_STRUCT_RETURN
-#define STORE_STRUCT_RETURN(a1,a2) (abort ())
+#define STORE_STRUCT_RETURN(a1,a2) (internal_error (__FILE__, __LINE__, "STORE_STRUCT_RETURN"), 0)
#endif
/* Are we in a call dummy? */
-extern int pc_in_call_dummy_before_text_end PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
-#if !GDB_MULTI_ARCH
-#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == BEFORE_TEXT_END
-#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_before_text_end (pc, sp, frame_address)
-#endif /* Before text_end. */
-#endif
+/* NOTE: cagney/2002-11-24: Targets need to both switch to generic
+ dummy frames, and use generic_pc_in_call_dummy(). The generic
+ version should be able to handle all cases since that code works by
+ saving the address of the dummy's breakpoint (where ever it is). */
-extern int pc_in_call_dummy_after_text_end PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
-#if !GDB_MULTI_ARCH
-#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == AFTER_TEXT_END
-#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_after_text_end (pc, sp, frame_address)
-#endif
-#endif
+extern int deprecated_pc_in_call_dummy_on_stack (CORE_ADDR pc,
+ CORE_ADDR sp,
+ CORE_ADDR frame_address);
-extern int pc_in_call_dummy_on_stack PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
-#if !GDB_MULTI_ARCH
-#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == ON_STACK
-#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_on_stack (pc, sp, frame_address)
-#endif
-#endif
+/* NOTE: cagney/2002-11-24: Targets need to both switch to generic
+ dummy frames, and use generic_pc_in_call_dummy(). The generic
+ version should be able to handle all cases since that code works by
+ saving the address of the dummy's breakpoint (where ever it is). */
-extern int pc_in_call_dummy_at_entry_point PARAMS ((CORE_ADDR pc, CORE_ADDR sp, CORE_ADDR frame_address));
-#if !GDB_MULTI_ARCH
-#if !defined (PC_IN_CALL_DUMMY) && CALL_DUMMY_LOCATION == AT_ENTRY_POINT
-#define PC_IN_CALL_DUMMY(pc, sp, frame_address) pc_in_call_dummy_at_entry_point (pc, sp, frame_address)
-#endif
-#endif
+extern int deprecated_pc_in_call_dummy_at_entry_point (CORE_ADDR pc,
+ CORE_ADDR sp,
+ CORE_ADDR frame_address);
/* It's often not enough for our clients to know whether the PC is merely
somewhere within the call dummy. They may need to know whether the
*/
#if !defined(CALL_DUMMY_HAS_COMPLETED)
#define CALL_DUMMY_HAS_COMPLETED(pc, sp, frame_address) \
- PC_IN_CALL_DUMMY((pc), (sp), (frame_address))
+ DEPRECATED_PC_IN_CALL_DUMMY((pc), (sp), (frame_address))
#endif
/* If STARTUP_WITH_SHELL is set, GDB's "run"
projects / binutils.git / blobdiff