#if !defined (INFERIOR_H)
#define INFERIOR_H 1
-/* For symtab_and_line */
-#include "symtab.h"
-
/* For bpstat. */
#include "breakpoint.h"
* control variables.
*/
struct inferior_status {
- int pc_changed;
int stop_signal;
- int stop_pc;
+ CORE_ADDR stop_pc;
FRAME_ADDR stop_frame_address;
bpstat stop_bpstat;
int stop_step;
FRAME_ADDR selected_frame_address;
int selected_level;
char stop_registers[REGISTER_BYTES];
+
+ /* These are here because if call_function_by_hand has written some
+ registers and then decides to call error(), we better not have changed
+ any registers. */
+ char registers[REGISTER_BYTES];
+
int breakpoint_proceeded;
int restore_stack_info;
int proceed_to_finish;
extern void
restore_inferior_status PARAMS ((struct inferior_status *));
+extern void set_sigint_trap PARAMS ((void));
+extern void clear_sigint_trap PARAMS ((void));
+
/* File name for default use for standard in/out in the inferior. */
extern char *inferior_io_terminal;
extern void
terminal_ours PARAMS ((void));
-extern void
-run_stack_dummy PARAMS ((CORE_ADDR, char [REGISTER_BYTES]));
+extern int run_stack_dummy PARAMS ((CORE_ADDR, char [REGISTER_BYTES]));
extern CORE_ADDR
read_pc PARAMS ((void));
extern void
write_pc PARAMS ((CORE_ADDR));
+extern CORE_ADDR
+read_sp PARAMS ((void));
+
+extern void
+write_sp PARAMS ((CORE_ADDR));
+
+extern CORE_ADDR
+read_fp PARAMS ((void));
+
+extern void
+write_fp PARAMS ((CORE_ADDR));
+
extern void
wait_for_inferior PARAMS ((void));
detach PARAMS ((int));
extern void
-child_resume PARAMS ((int, int));
+child_resume PARAMS ((int, int, int));
#ifndef PTRACE_ARG3_TYPE
#define PTRACE_ARG3_TYPE int /* Correct definition for most systems. */
extern void
new_tty_prefork PARAMS ((char *));
+extern int gdb_has_a_terminal PARAMS ((void));
+
/* From infrun.c */
extern void
/* 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. */
+ 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 */
extern char stop_registers[REGISTER_BYTES];
-/* Nonzero if pc has been changed by the debugger
- since the inferior stopped. */
-
-extern int pc_changed;
-
/* Nonzero if the child process in inferior_pid 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) < SIGTRAMP_END \
+ )
+# 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 (CALL_DUMMY_LOCATION)
#define CALL_DUMMY_LOCATION ON_STACK
#define PC_IN_CALL_DUMMY(pc, sp, frame_address) \
((pc) >= text_end - CALL_DUMMY_LENGTH \
&& (pc) <= text_end + DECR_PC_AFTER_BREAK)
-#else /* Not before text_end. */
+#endif /* Before text_end. */
+
#if CALL_DUMMY_LOCATION == AFTER_TEXT_END
extern CORE_ADDR text_end;
#define PC_IN_CALL_DUMMY(pc, sp, frame_address) \
((pc) >= text_end \
&& (pc) <= text_end + CALL_DUMMY_LENGTH + DECR_PC_AFTER_BREAK)
-#else /* On stack. */
-
-/* This assumes that frame_address is the value of SP_REGNUM before
- the dummy frame was pushed. The only known machine for which this
- isn't true is the 29k, which doesn't use ON_STACK. Machines for
- which it isn't true who want to put stack dummies on the stack
- could provide their own PC_IN_CALL_DUMMY, or perhaps this macro
- could be re-written to check for the end of the stack instead
- (using the target_ops->sections). Are there user programs, libraries,
- kernel routines, etc. which also execute on the stack? If so, the
- latter would be a bad idea. */
+#endif /* After text_end. */
+
+#if CALL_DUMMY_LOCATION == ON_STACK
+/* Is the PC in a call dummy? SP and FRAME_ADDRESS are the bottom and
+ top of the stack frame which we are checking, where "bottom" and
+ "top" refer to some section of memory which contains the code for
+ the call dummy. Calls to this macro assume that the contents of
+ SP_REGNUM and FP_REGNUM (or the saved values thereof), respectively,
+ are the things to pass.
+
+ This won't work on the 29k, where SP_REGNUM and FP_REGNUM don't
+ have that meaning, but the 29k doesn't use ON_STACK. This could be
+ fixed by generalizing this scheme, perhaps by passing in a frame
+ and adding a few fields, at least on machines which need them for
+ PC_IN_CALL_DUMMY.
+
+ Something simpler, like checking for the stack segment, doesn't work,
+ since various programs (threads implementations, gcc nested function
+ stubs, etc) may either allocate stack frames in another segment, or
+ allocate other kinds of code on the stack. */
#define PC_IN_CALL_DUMMY(pc, sp, frame_address) \
((sp) INNER_THAN (pc) && (frame_address != 0) && (pc) INNER_THAN (frame_address))
#endif /* On stack. */
-#endif /* Not before text_end. */
+
+#if CALL_DUMMY_LOCATION == AT_ENTRY_POINT
+extern CORE_ADDR
+entry_point_address PARAMS ((void));
+#define PC_IN_CALL_DUMMY(pc, sp, frame_address) \
+ ((pc) >= entry_point_address () \
+ && (pc) <= (entry_point_address () + DECR_PC_AFTER_BREAK))
+#endif /* At entry point. */
#endif /* No PC_IN_CALL_DUMMY. */
#endif /* !defined (INFERIOR_H) */
projects / deliverable / binutils-gdb.git / blobdiff