+2007-02-29 Daniel Jacobowitz <dan@codesourcery.com>
+
+ * Makefile.in (i386-nat.o): Update.
+ * amd64-linux-nat.c (_initialize_amd64_linux_nat): Call
+ i386_use_watchpoints.
+ * i386-linux-nat.c (_initialize_i386_linux_nat): Call
+ i386_use_watchpoints.
+ * i386-nat.c (i386_stopped_data_address): Take two arguments.
+ (i386_stopped_by_watchpoint): Update call.
+ (i386_can_use_hw_breakpoint, i386_use_watchpoints): New.
+ * config/i386/nm-i386.h: Conditionalize definitions on
+ ! I386_WATCHPOINTS_IN_TARGET_VECTOR.
+ (i386_use_watchpoints): Declare.
+ (i386_stopped_data_address): Update.
+ * config/i386/nm-linux.h (I386_WATCHPOINTS_IN_TARGET_VECTOR): Define.
+ * config/i386/nm-linux64.h (I386_WATCHPOINTS_IN_TARGET_VECTOR): Define.
+
2008-02-29 Joel Brobecker <brobecker@adacore.com>
GDB 6.8 branch created (branch timestamp: 2008-02-26 10:00 UTC)
$(value_h) $(regcache_h) $(inferior_h) $(osabi_h) $(reggroups_h) \
$(dwarf2_frame_h) $(gdb_string_h) $(i386_tdep_h) \
$(i386_linux_tdep_h) $(glibc_tdep_h) $(solib_svr4_h) $(symtab_h)
-i386-nat.o: i386-nat.c $(defs_h) $(breakpoint_h) $(command_h) $(gdbcmd_h)
+i386-nat.o: i386-nat.c $(defs_h) $(breakpoint_h) $(command_h) $(gdbcmd_h) \
+ $(target_h)
i386nbsd-nat.o: i386nbsd-nat.c $(defs_h) $(gdbcore_h) $(regcache_h) \
$(target_h) $(i386_tdep_h) $(i386bsd_nat_h) $(nbsd_nat_h) \
$(bsd_kvm_h)
/* Fill in the generic GNU/Linux methods. */
t = linux_target ();
+ i386_use_watchpoints (t);
+
/* Override the GNU/Linux inferior startup hook. */
super_post_startup_inferior = t->to_post_startup_inferior;
t->to_post_startup_inferior = amd64_linux_child_post_startup_inferior;
/* Targets should define this to use the generic x86 watchpoint support. */
#ifdef I386_USE_GENERIC_WATCHPOINTS
+/* Add watchpoint methods to the provided target_ops. Targets which call
+ this should also define I386_WATCHPOINTS_IN_TARGET_VECTOR. */
+struct target_ops;
+void i386_use_watchpoints (struct target_ops *);
+
/* Clear the reference counts and forget everything we knew about DRi. */
extern void i386_cleanup_dregs (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 *);
+extern int i386_stopped_data_address (struct target_ops *, CORE_ADDR *);
/* Insert a hardware-assisted breakpoint at BP_TGT->placed_address.
Return 0 on success, EBUSY on failure. */
Return 0 on success, -1 on failure. */
extern int i386_remove_hw_breakpoint (struct bp_target_info *bp_tgt);
+extern int i386_stopped_by_watchpoint (void);
+
+#ifndef I386_WATCHPOINTS_IN_TARGET_VECTOR
+
/* Returns the number of hardware watchpoints of type TYPE that we can
set. Value is positive if we can set CNT watchpoints, zero if
setting watchpoints of type TYPE is not supported, and negative if
#define HAVE_CONTINUABLE_WATCHPOINT 1
-extern int i386_stopped_by_watchpoint (void);
-
#define STOPPED_BY_WATCHPOINT(W) (i386_stopped_by_watchpoint () != 0)
-#define target_stopped_data_address(target, x) i386_stopped_data_address(x)
+#define target_stopped_data_address(target, x) \
+ i386_stopped_data_address(target, x)
/* Use these macros for watchpoint insertion/removal. */
#define target_remove_hw_breakpoint(bp_tgt) \
i386_remove_hw_breakpoint (bp_tgt)
+#endif /* I386_WATCHPOINTS_IN_TARGET_VECTOR */
+
#endif /* I386_USE_GENERIC_WATCHPOINTS */
#endif /* NM_I386_H */
/* GNU/Linux supports the i386 hardware debugging registers. */
#define I386_USE_GENERIC_WATCHPOINTS
+#define I386_WATCHPOINTS_IN_TARGET_VECTOR
#include "i386/nm-i386.h"
#include "config/nm-linux.h"
/* GNU/Linux supports the i386 hardware debugging registers. */
#define I386_USE_GENERIC_WATCHPOINTS
+#define I386_WATCHPOINTS_IN_TARGET_VECTOR
#include "i386/nm-i386.h"
#include "config/nm-linux.h"
/* Fill in the generic GNU/Linux methods. */
t = linux_target ();
+ i386_use_watchpoints (t);
+
/* Override the default ptrace resume method. */
t->to_resume = i386_linux_resume;
#include "breakpoint.h"
#include "command.h"
#include "gdbcmd.h"
+#include "target.h"
/* Support for hardware watchpoints and breakpoints using the i386
debug registers.
Otherwise, return zero. */
int
-i386_stopped_data_address (CORE_ADDR *addr_p)
+i386_stopped_data_address (struct target_ops *ops, CORE_ADDR *addr_p)
{
CORE_ADDR addr = 0;
int i;
i386_stopped_by_watchpoint (void)
{
CORE_ADDR addr = 0;
- return i386_stopped_data_address (&addr);
+ return i386_stopped_data_address (¤t_target, &addr);
}
/* Return non-zero if the inferior has some break/watchpoint that
return retval;
}
+/* Returns the number of hardware watchpoints of type TYPE that we can
+ set. Value is positive if we can set CNT watchpoints, zero if
+ setting watchpoints of type TYPE is not supported, and negative if
+ CNT is more than the maximum number of watchpoints of type TYPE
+ that we can support. TYPE is one of bp_hardware_watchpoint,
+ bp_read_watchpoint, bp_write_watchpoint, or bp_hardware_breakpoint.
+ CNT is the number of such watchpoints used so far (including this
+ one). OTHERTYPE is non-zero if other types of watchpoints are
+ 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-nat.c. */
+
+static int
+i386_can_use_hw_breakpoint (int type, int cnt, int othertype)
+{
+ return 1;
+}
+
+void
+i386_use_watchpoints (struct target_ops *t)
+{
+ /* 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. */
+ t->to_have_continuable_watchpoint = 1;
+
+ t->to_can_use_hw_breakpoint = i386_can_use_hw_breakpoint;
+ t->to_region_ok_for_hw_watchpoint = i386_region_ok_for_watchpoint;
+ t->to_stopped_by_watchpoint = i386_stopped_by_watchpoint;
+ t->to_stopped_data_address = i386_stopped_data_address;
+ t->to_insert_watchpoint = i386_insert_watchpoint;
+ t->to_remove_watchpoint = i386_remove_watchpoint;
+ t->to_insert_hw_breakpoint = i386_insert_hw_breakpoint;
+ t->to_remove_hw_breakpoint = i386_remove_hw_breakpoint;
+}
+
#endif /* I386_USE_GENERIC_WATCHPOINTS */
\f
projects / binutils-gdb.git / commitdiff