/* Native macro definitions for GDB on an Intel i[3456]86.
- Copyright (C) 2001 Free Software Foundation, Inc.
+ Copyright 2001, 2004, 2007 Free Software Foundation, Inc.
This file is part of GDB.
#ifndef NM_I386_H
#define NM_I386_H 1
-\f
/* Hardware-assisted breakpoints and watchpoints. */
/* Targets should define this to use the generic x86 watchpoint support. */
#ifdef I386_USE_GENERIC_WATCHPOINTS
-
-#ifndef TARGET_HAS_HARDWARE_WATCHPOINTS
-#define TARGET_HAS_HARDWARE_WATCHPOINTS
-#endif
-
/* Clear the reference counts and forget everything we knew about DRi. */
extern void i386_cleanup_dregs (void);
/* Insert a watchpoint to watch a memory region which starts at
address ADDR and whose length is LEN bytes. Watch memory accesses
of the type TYPE. Return 0 on success, -1 on failure. */
-extern int i386_insert_watchpoint (CORE_ADDR addr, int len, int type);
+extern int i386_insert_watchpoint (CORE_ADDR addr, int len, int type);
/* Remove a watchpoint that watched the memory region which starts at
address ADDR, whose length is LEN bytes, and for accesses of the
type TYPE. Return 0 on success, -1 on failure. */
-extern int i386_remove_watchpoint (CORE_ADDR addr, int len, int type);
+extern int i386_remove_watchpoint (CORE_ADDR addr, int len, int type);
/* Return non-zero if we can watch a memory region that starts at
address ADDR and whose length is LEN bytes. */
-extern int i386_region_ok_for_watchpoint (CORE_ADDR addr, int len);
+extern int i386_region_ok_for_watchpoint (CORE_ADDR addr, int len);
/* Return non-zero if the inferior has some break/watchpoint that
triggered. */
-extern int i386_stopped_by_hwbp (void);
+extern int i386_stopped_by_hwbp (void);
-/* If the inferior has some break/watchpoint that triggered, return
- the address associated with that break/watchpoint. Otherwise,
- return zero. */
-extern CORE_ADDR i386_stopped_data_address (void);
+/* If the inferior has some break/watchpoint that triggered, set
+ the address associated with that break/watchpoint and return
+ true. Otherwise, return false. */
+extern int i386_stopped_data_address (CORE_ADDR *);
-/* Insert a hardware-assisted breakpoint at address ADDR. SHADOW is
- unused. Return 0 on success, EBUSY on failure. */
-extern int i386_insert_hw_breakpoint (CORE_ADDR addr, void *shadow);
+/* Insert a hardware-assisted breakpoint at BP_TGT->placed_address.
+ Return 0 on success, EBUSY on failure. */
+struct bp_target_info;
+extern int i386_insert_hw_breakpoint (struct bp_target_info *bp_tgt);
-/* Remove a hardware-assisted breakpoint at address ADDR. SHADOW is
- unused. Return 0 on success, -1 on failure. */
-extern int i386_remove_hw_breakpoint (CORE_ADDR addr, void *shadow);
+/* Remove a hardware-assisted breakpoint at BP_TGT->placed_address.
+ Return 0 on success, -1 on failure. */
+extern int i386_remove_hw_breakpoint (struct bp_target_info *bp_tgt);
/* Returns the number of hardware watchpoints of type TYPE that we can
set. Value is positive if we can set CNT watchpoints, zero if
currently enabled.
We always return 1 here because we don't have enough information
- about possible overlap of addresses that they want to watch. As
- an extreme example, consider the case where all the watchpoints
- watch the same address and the same region length: then we can
- handle a virtually unlimited number of watchpoints, due to debug
- register sharing implemented via reference counts in i386-tdep.c. */
+ about possible overlap of addresses that they want to watch. As an
+ extreme example, consider the case where all the watchpoints watch
+ the same address and the same region length: then we can handle a
+ virtually unlimited number of watchpoints, due to debug register
+ sharing implemented via reference counts in i386-nat.c. */
#define TARGET_CAN_USE_HARDWARE_WATCHPOINT(type, cnt, ot) 1
-/* Returns non-zero if we can use hardware watchpoints to watch a region
- whose address is ADDR and whose length is LEN. */
+/* Returns non-zero if we can use hardware watchpoints to watch a
+ region whose address is ADDR and whose length is LEN. */
-#define TARGET_REGION_OK_FOR_HW_WATCHPOINT(addr,len) \
- i386_region_ok_for_watchpoint(addr,len)
+#define TARGET_REGION_OK_FOR_HW_WATCHPOINT(addr, len) \
+ i386_region_ok_for_watchpoint (addr, len)
/* After a watchpoint trap, the PC points to the instruction after the
one that caused the trap. Therefore we don't need to step over it.
But we do need to reset the status register to avoid another trap. */
-#define HAVE_CONTINUABLE_WATCHPOINT
+#define HAVE_CONTINUABLE_WATCHPOINT 1
+
+extern int i386_stopped_by_watchpoint (void);
-#define STOPPED_BY_WATCHPOINT(W) (i386_stopped_data_address () != 0)
+#define STOPPED_BY_WATCHPOINT(W) (i386_stopped_by_watchpoint () != 0)
-#define target_stopped_data_address() i386_stopped_data_address ()
+#define target_stopped_data_address(target, x) i386_stopped_data_address(x)
/* Use these macros for watchpoint insertion/removal. */
-#define target_insert_watchpoint(addr, len, type) \
+#define target_insert_watchpoint(addr, len, type) \
i386_insert_watchpoint (addr, len, type)
-#define target_remove_watchpoint(addr, len, type) \
+#define target_remove_watchpoint(addr, len, type) \
i386_remove_watchpoint (addr, len, type)
-#define target_insert_hw_breakpoint(addr, shadow) \
- i386_insert_hw_breakpoint(addr, shadow)
+#define target_insert_hw_breakpoint(bp_tgt) \
+ i386_insert_hw_breakpoint (bp_tgt)
-#define target_remove_hw_breakpoint(addr, shadow) \
- i386_remove_hw_breakpoint(addr, shadow)
+#define target_remove_hw_breakpoint(bp_tgt) \
+ i386_remove_hw_breakpoint (bp_tgt)
-#define DECR_PC_AFTER_HW_BREAK 0
+/* child_post_startup_inferior used to
+ reset all debug registers by calling i386_cleanup_dregs (). */
+#define CHILD_POST_STARTUP_INFERIOR
#endif /* I386_USE_GENERIC_WATCHPOINTS */
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