| /* 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. |
| |
| 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 2 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, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #if !defined (INFERIOR_H) |
| #define INFERIOR_H 1 |
| |
| /* For bpstat. */ |
| #include "breakpoint.h" |
| |
| /* For enum target_signal. */ |
| #include "target.h" |
| |
| /* Structure in which to save the status of the inferior. Create/Save |
| through "save_inferior_status", restore through |
| "restore_inferior_status". |
| |
| This pair of routines should be called around any transfer of |
| control to the inferior which you don't want showing up in your |
| control variables. */ |
| |
| struct inferior_status; |
| |
| extern struct inferior_status *save_inferior_status PARAMS ((int)); |
| |
| extern void restore_inferior_status PARAMS ((struct inferior_status *)); |
| |
| extern void discard_inferior_status PARAMS ((struct inferior_status *)); |
| |
| extern void write_inferior_status_register PARAMS ((struct inferior_status * inf_status, int regno, LONGEST val)); |
| |
| /* 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. */ |
| |
| #ifndef ARCH_NUM_REGS |
| #define ARCH_NUM_REGS NUM_REGS |
| #endif |
| |
| extern void set_sigint_trap PARAMS ((void)); |
| |
| extern void clear_sigint_trap PARAMS ((void)); |
| |
| extern void set_sigio_trap PARAMS ((void)); |
| |
| extern void clear_sigio_trap PARAMS ((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. */ |
| |
| extern int inferior_pid; |
| |
| /* Is the inferior running right now, as a result of a 'run&', |
| 'continue&' etc command? This is used in asycn gdb to determine |
| whether a command that the user enters while the target is running |
| is allowed or not. */ |
| extern int target_executing; |
| |
| /* Are we simulating synchronous execution? This is used in async gdb |
| to implement the 'run', 'continue' etc commands, which will not |
| redisplay the prompt until the execution is actually over. */ |
| extern int sync_execution; |
| |
| /* This is only valid when inferior_pid 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). |
| |
| If this is > 0, then that many subsequent exec events should be |
| ignored (i.e., not be reported to the user). |
| */ |
| extern int inferior_ignoring_startup_exec_events; |
| |
| /* This is only valid when inferior_ignoring_startup_exec_events is |
| zero. |
| |
| Some targets (stupidly) report more than one exec event per actual |
| call to an event() system call. If only the last such exec event |
| need actually be noticed and responded to by the debugger (i.e., |
| be reported to the user), then this is the number of "leading" |
| exec events which should be ignored. |
| */ |
| extern int inferior_ignoring_leading_exec_events; |
| |
| /* Inferior environment. */ |
| |
| extern struct environ *inferior_environ; |
| |
| /* Character array containing an image of the inferior programs' |
| registers. */ |
| |
| extern char *registers; |
| |
| /* Character array containing the current state of each register |
| (unavailable<0, valid=0, invalid>0). */ |
| |
| extern signed char *register_valid; |
| |
| extern void clear_proceed_status PARAMS ((void)); |
| |
| extern void proceed PARAMS ((CORE_ADDR, enum target_signal, int)); |
| |
| extern void kill_inferior PARAMS ((void)); |
| |
| extern void generic_mourn_inferior PARAMS ((void)); |
| |
| extern void terminal_ours PARAMS ((void)); |
| |
| extern int run_stack_dummy PARAMS ((CORE_ADDR, char *)); |
| |
| extern CORE_ADDR read_pc PARAMS ((void)); |
| |
| extern CORE_ADDR read_pc_pid PARAMS ((int)); |
| |
| extern CORE_ADDR generic_target_read_pc PARAMS ((int)); |
| |
| extern void write_pc PARAMS ((CORE_ADDR)); |
| |
| extern void write_pc_pid PARAMS ((CORE_ADDR, int)); |
| |
| extern void generic_target_write_pc PARAMS ((CORE_ADDR, int)); |
| |
| extern CORE_ADDR read_sp PARAMS ((void)); |
| |
| extern CORE_ADDR generic_target_read_sp PARAMS ((void)); |
| |
| extern void write_sp PARAMS ((CORE_ADDR)); |
| |
| extern void generic_target_write_sp PARAMS ((CORE_ADDR)); |
| |
| extern CORE_ADDR read_fp PARAMS ((void)); |
| |
| extern CORE_ADDR generic_target_read_fp PARAMS ((void)); |
| |
| extern void write_fp PARAMS ((CORE_ADDR)); |
| |
| extern void generic_target_write_fp PARAMS ((CORE_ADDR)); |
| |
| extern void wait_for_inferior PARAMS ((void)); |
| |
| extern void fetch_inferior_event PARAMS ((void *)); |
| |
| extern void init_wait_for_inferior PARAMS ((void)); |
| |
| extern void close_exec_file PARAMS ((void)); |
| |
| extern void reopen_exec_file PARAMS ((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)); |
| |
| /* From misc files */ |
| |
| extern void store_inferior_registers PARAMS ((int)); |
| |
| extern void fetch_inferior_registers PARAMS ((int)); |
| |
| extern void solib_create_inferior_hook PARAMS ((void)); |
| |
| extern void child_terminal_info PARAMS ((char *, int)); |
| |
| extern void term_info PARAMS ((char *, int)); |
| |
| extern void terminal_ours_for_output PARAMS ((void)); |
| |
| extern void terminal_inferior PARAMS ((void)); |
| |
| extern void terminal_init_inferior PARAMS ((void)); |
| |
| extern void terminal_init_inferior_with_pgrp PARAMS ((int pgrp)); |
| |
| /* From infptrace.c or infttrace.c */ |
| |
| extern int attach PARAMS ((int)); |
| |
| #if !defined(REQUIRE_ATTACH) |
| #define REQUIRE_ATTACH attach |
| #endif |
| |
| #if !defined(REQUIRE_DETACH) |
| #define REQUIRE_DETACH(pid,siggnal) detach (siggnal) |
| #endif |
| |
| extern void detach PARAMS ((int)); |
| |
| /* PTRACE method of waiting for inferior process. */ |
| int ptrace_wait PARAMS ((int, int *)); |
| |
| extern void child_resume PARAMS ((int, 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 void pre_fork_inferior PARAMS ((void)); |
| |
| /* From procfs.c */ |
| |
| extern int proc_iterate_over_mappings PARAMS ((int (*)(int, CORE_ADDR))); |
| |
| extern int procfs_first_available PARAMS ((void)); |
| |
| extern int procfs_get_pid_fd PARAMS ((int)); |
| |
| /* From fork-child.c */ |
| |
| extern void fork_inferior PARAMS ((char *, char *, char **, |
| void (*)(void), |
| void (*)(int), |
| void (*)(void), |
| char *)); |
| |
| |
| extern void |
| clone_and_follow_inferior PARAMS ((int, int *)); |
| |
| extern void startup_inferior PARAMS ((int)); |
| |
| /* From inflow.c */ |
| |
| extern void new_tty_prefork PARAMS ((char *)); |
| |
| extern int gdb_has_a_terminal PARAMS ((void)); |
| |
| /* From infrun.c */ |
| |
| extern void start_remote PARAMS ((void)); |
| |
| extern void normal_stop PARAMS ((void)); |
| |
| extern int signal_stop_state PARAMS ((int)); |
| |
| extern int signal_print_state PARAMS ((int)); |
| |
| extern int signal_pass_state PARAMS ((int)); |
| |
| extern int signal_stop_update PARAMS ((int, int)); |
| |
| extern int signal_print_update PARAMS ((int, int)); |
| |
| extern int signal_pass_update PARAMS ((int, int)); |
| |
| /* From infcmd.c */ |
| |
| extern void tty_command PARAMS ((char *, int)); |
| |
| extern void attach_command PARAMS ((char *, int)); |
| |
| /* Last signal that the inferior received (why it stopped). */ |
| |
| extern enum target_signal stop_signal; |
| |
| /* Address at which inferior stopped. */ |
| |
| extern CORE_ADDR stop_pc; |
| |
| /* Chain containing status of breakpoint(s) that we have stopped at. */ |
| |
| extern bpstat stop_bpstat; |
| |
| /* Flag indicating that a command has proceeded the inferior past the |
| current breakpoint. */ |
| |
| extern int breakpoint_proceeded; |
| |
| /* Nonzero if stopped due to a step command. */ |
| |
| extern int stop_step; |
| |
| /* Nonzero if stopped due to completion of a stack dummy routine. */ |
| |
| extern int stop_stack_dummy; |
| |
| /* Nonzero if program stopped due to a random (unexpected) signal in |
| inferior process. */ |
| |
| extern int stopped_by_random_signal; |
| |
| /* Range to single step within. |
| If this is nonzero, respond to a single-step signal |
| by continuing to step if the pc is in this range. |
| |
| If step_range_start and step_range_end are both 1, it means to step for |
| a single instruction (FIXME: it might clean up wait_for_inferior in a |
| minor way if this were changed to the address of the instruction and |
| that address plus one. But maybe not.). */ |
| |
| extern CORE_ADDR step_range_start; /* Inclusive */ |
| extern CORE_ADDR step_range_end; /* Exclusive */ |
| |
| /* Stack frame address as of when stepping command was issued. |
| 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; |
| |
| /* Our notion of the current stack pointer. */ |
| |
| extern CORE_ADDR step_sp; |
| |
| /* 1 means step over all subroutine calls. |
| -1 means step over calls to undebuggable functions. */ |
| |
| extern int step_over_calls; |
| |
| /* If stepping, nonzero means step count is > 1 |
| so don't print frame next time inferior stops |
| if it stops due to stepping. */ |
| |
| 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 if proceed is being used for a "finish" command or a similar |
| situation when stop_registers should be saved. */ |
| |
| extern int proceed_to_finish; |
| |
| /* Save register contents here when about to pop a stack dummy frame, |
| if-and-only-if proceed_to_finish is set. |
| Thus this contains the return value from the called function (assuming |
| values are returned in a register). */ |
| |
| extern char *stop_registers; |
| |
| /* Nonzero if the child process in inferior_pid was attached rather |
| than forked. */ |
| |
| extern int attach_flag; |
| |
| /* 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 |
| |
| /* 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() (internal_error ("CALL_DUMMY_ADDRESS"), 0) |
| #endif |
| #if !defined (CALL_DUMMY_START_OFFSET) |
| #define CALL_DUMMY_START_OFFSET (internal_error ("CALL_DUMMY_START_OFFSET"), 0) |
| #endif |
| #if !defined (CALL_DUMMY_BREAKPOINT_OFFSET) |
| #define CALL_DUMMY_BREAKPOINT_OFFSET_P (0) |
| #define CALL_DUMMY_BREAKPOINT_OFFSET (internal_error ("CALL_DUMMY_BREAKPOINT_OFFSET"), 0) |
| #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 (internal_error ("CALL_DUMMY_LENGTH"), 0) |
| #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 (internal_error ("CALL_DUMMY_STACK_ADJUST"), 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 (internal_error ("CALL_DUMMY_WORDS"), (void*) 0) |
| #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 (internal_error ("SIZEOF_CALL_DUMMY_WORDS"), 0) |
| #endif |
| #endif |
| |
| #if !defined PUSH_DUMMY_FRAME |
| #define PUSH_DUMMY_FRAME (internal_error ("PUSH_DUMMY_FRAME"), 0) |
| #endif |
| |
| #if !defined FIX_CALL_DUMMY |
| #define FIX_CALL_DUMMY(a1,a2,a3,a4,a5,a6,a7) (internal_error ("FIX_CALL_DUMMY"), 0) |
| #endif |
| |
| #if !defined STORE_STRUCT_RETURN |
| #define STORE_STRUCT_RETURN(a1,a2) (internal_error ("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 |
| |
| 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 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 |
| |
| 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 |
| |
| /* 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 |
| call dummy has actually completed. (For example, wait_for_inferior |
| wants to know when it should truly stop because the call dummy has |
| completed. If we're single-stepping because of slow watchpoints, |
| then we may find ourselves stopped at the entry of the call dummy, |
| and want to continue stepping until we reach the end.) |
| |
| Note that this macro is intended for targets (like HP-UX) which |
| require more than a single breakpoint in their call dummies, and |
| therefore cannot use the CALL_DUMMY_BREAKPOINT_OFFSET mechanism. |
| |
| If a target does define CALL_DUMMY_BREAKPOINT_OFFSET, then this |
| default implementation of CALL_DUMMY_HAS_COMPLETED is sufficient. |
| Else, a target may wish to supply an implementation that works in |
| the presense of multiple breakpoints in its call dummy. |
| */ |
| #if !defined(CALL_DUMMY_HAS_COMPLETED) |
| #define CALL_DUMMY_HAS_COMPLETED(pc, sp, frame_address) \ |
| PC_IN_CALL_DUMMY((pc), (sp), (frame_address)) |
| #endif |
| |
| /* If STARTUP_WITH_SHELL is set, GDB's "run" |
| will attempts to start up the debugee under a shell. |
| This is in order for argument-expansion to occur. E.g., |
| (gdb) run * |
| The "*" gets expanded by the shell into a list of files. |
| While this is a nice feature, it turns out to interact badly |
| with some of the catch-fork/catch-exec features we have added. |
| In particular, if the shell does any fork/exec's before |
| the exec of the target program, that can confuse GDB. |
| To disable this feature, set STARTUP_WITH_SHELL to 0. |
| To enable this feature, set STARTUP_WITH_SHELL to 1. |
| The catch-exec traps expected during start-up will |
| be 1 if target is not started up with a shell, 2 if it is. |
| - RT |
| If you disable this, you need to decrement |
| START_INFERIOR_TRAPS_EXPECTED in tm.h. */ |
| #define STARTUP_WITH_SHELL 1 |
| #if !defined(START_INFERIOR_TRAPS_EXPECTED) |
| #define START_INFERIOR_TRAPS_EXPECTED 2 |
| #endif |
| #endif /* !defined (INFERIOR_H) */ |