/* Variables that describe the inferior process running under GDB:
Where it is, why it stopped, and how to step it.
- Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
- 1998, 1999, 2000, 2001 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 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".
extern void generic_mourn_inferior (void);
-extern void terminal_ours (void);
+extern void terminal_save_ours (void);
-extern int run_stack_dummy (CORE_ADDR, char *);
+extern void terminal_ours (void);
extern CORE_ADDR read_pc (void);
extern CORE_ADDR read_pc_pid (ptid_t);
-extern CORE_ADDR generic_target_read_pc (ptid_t);
-
extern void write_pc (CORE_ADDR);
extern void write_pc_pid (CORE_ADDR, ptid_t);
extern CORE_ADDR generic_target_read_sp (void);
-extern void write_sp (CORE_ADDR);
-
extern void generic_target_write_sp (CORE_ADDR);
-extern CORE_ADDR read_fp (void);
+extern CORE_ADDR deprecated_read_fp (void);
-extern CORE_ADDR generic_target_read_fp (void);
-
-extern CORE_ADDR unsigned_pointer_to_address (struct type *type, void *buf);
+extern CORE_ADDR unsigned_pointer_to_address (struct type *type, const void *buf);
extern void unsigned_address_to_pointer (struct type *type, void *buf,
CORE_ADDR addr);
-extern CORE_ADDR signed_pointer_to_address (struct type *type, void *buf);
+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);
/* From misc files */
-extern void do_registers_info (int, int);
+extern void default_print_registers_info (struct gdbarch *gdbarch,
+ struct ui_file *file,
+ struct frame_info *frame,
+ int regnum, int all);
extern void store_inferior_registers (int);
extern int attach (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 (int);
/* PTRACE method of waiting for inferior process. */
void (*)(int), void (*)(void), char *);
-extern void clone_and_follow_inferior (int, int *);
-
extern void startup_inferior (int);
extern char *construct_inferior_arguments (struct gdbarch *, int, char **);
extern void get_last_target_status(ptid_t *ptid,
struct target_waitstatus *status);
+extern void follow_inferior_reset_breakpoints (void);
+
/* From infcmd.c */
extern void tty_command (char *, int);
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). */
extern enum target_signal stop_signal;
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. */
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?). */
+/* 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 int stop_soon_quietly;
+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. */
\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() (internal_error (__FILE__, __LINE__, "CALL_DUMMY_ADDRESS"), 0)
-#endif
-#if !defined (CALL_DUMMY_START_OFFSET)
-#define CALL_DUMMY_START_OFFSET (internal_error (__FILE__, __LINE__, "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 (__FILE__, __LINE__, "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 (__FILE__, __LINE__, "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 (__FILE__, __LINE__, "CALL_DUMMY_STACK_ADJUST"), 0)
-#endif
-#if !defined (CALL_DUMMY_STACK_ADJUST_P)
-#define CALL_DUMMY_STACK_ADJUST_P (0)
-#endif
-
/* FIXME: cagney/2000-04-17: gdbarch should manage this. The default
shouldn't be necessary. */
-#if !defined (CALL_DUMMY_P)
-#if defined (CALL_DUMMY)
-#define CALL_DUMMY_P 1
-#else
-#define CALL_DUMMY_P 0
-#endif
-#endif
-
#if !defined PUSH_DUMMY_FRAME
#define PUSH_DUMMY_FRAME (internal_error (__FILE__, __LINE__, "PUSH_DUMMY_FRAME"), 0)
#endif
-#if !defined FIX_CALL_DUMMY
-#define FIX_CALL_DUMMY(a1,a2,a3,a4,a5,a6,a7) (internal_error (__FILE__, __LINE__, "FIX_CALL_DUMMY"), 0)
-#endif
-
#if !defined STORE_STRUCT_RETURN
#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 (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 (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 (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 (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
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.
- */
+ therefore cannot use the DEPRECATED_CALL_DUMMY_BREAKPOINT_OFFSET
+ mechanism.
+
+ If a target does define DEPRECATED_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))
+ DEPRECATED_PC_IN_CALL_DUMMY((pc), (sp), (frame_address))
#endif
/* If STARTUP_WITH_SHELL is set, GDB's "run"
projects / deliverable / binutils-gdb.git / blobdiff