/* 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;
extern void terminal_ours (void);
-extern int run_stack_dummy (CORE_ADDR , struct regcache *);
-
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 read_sp (void);
-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 generic_target_read_fp (void);
-
extern CORE_ADDR unsigned_pointer_to_address (struct type *type, const void *buf);
extern void unsigned_address_to_pointer (struct type *type, void *buf,
extern void child_resume (ptid_t, int, enum target_signal);
#ifndef PTRACE_ARG3_TYPE
-#define PTRACE_ARG3_TYPE int /* Correct definition for most systems. */
+#define PTRACE_ARG3_TYPE PTRACE_TYPE_ARG3
#endif
extern int call_ptrace (int, int, PTRACE_ARG3_TYPE, int);
extern struct frame_id step_frame_id;
-/* 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_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 (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? */
-
-/* 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 deprecated_pc_in_call_dummy_before_text_end (CORE_ADDR pc,
- CORE_ADDR sp,
- CORE_ADDR frame_address);
-
-/* 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 deprecated_pc_in_call_dummy_after_text_end (CORE_ADDR pc,
- CORE_ADDR sp,
- CORE_ADDR frame_address);
-
-/* 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 deprecated_pc_in_call_dummy_on_stack (CORE_ADDR pc,
- CORE_ADDR sp,
- CORE_ADDR frame_address);
-
-/* 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 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
- 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) \
- DEPRECATED_PC_IN_CALL_DUMMY((pc), (sp), (frame_address))
-#endif
+#define AT_SYMBOL 5
/* If STARTUP_WITH_SHELL is set, GDB's "run"
will attempts to start up the debugee under a shell.
projects / deliverable / binutils-gdb.git / blobdiff