import gdb-1999-08-23 snapshot

2 files changed, 30 insertions, 4 deletions

diff --git a/gdb/config/i386/nm-go32.h b/gdb/config/i386/nm-go32.h
index ba79c1b..3a9d224 100644
--- a/gdb/config/i386/nm-go32.h
+++ b/gdb/config/i386/nm-go32.h
@@ -24,8 +24,31 @@
 
 #define TARGET_HAS_HARDWARE_WATCHPOINTS
 
+/* 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 go32-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.  */
+
+#define TARGET_REGION_OK_FOR_HW_WATCHPOINT(addr,len) \
+	go32_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.  */
@@ -33,15 +56,18 @@
 #define HAVE_CONTINUABLE_WATCHPOINT
 
 #define STOPPED_BY_WATCHPOINT(W)  \
-  go32_stopped_by_watchpoint (inferior_pid)
+  go32_stopped_by_watchpoint (inferior_pid, 0)
+
+#define target_stopped_data_address() \
+  go32_stopped_by_watchpoint (inferior_pid, 1)
 
 /* Use these macros for watchpoint insertion/removal.  */
 
 #define target_insert_watchpoint(addr, len, type)  \
-  go32_insert_watchpoint (inferior_pid, addr, len, 2)
+  go32_insert_watchpoint (inferior_pid, addr, len, type)
 
 #define target_remove_watchpoint(addr, len, type)  \
-  go32_remove_watchpoint (inferior_pid, addr, len)
+  go32_remove_watchpoint (inferior_pid, addr, len, type)
 
 #define target_insert_hw_breakpoint(addr, shadow)  \
   go32_insert_hw_breakpoint(addr, shadow)
diff --git a/gdb/config/i386/xm-go32.h b/gdb/config/i386/xm-go32.h
index cb8fc78..868074d 100644
--- a/gdb/config/i386/xm-go32.h
+++ b/gdb/config/i386/xm-go32.h
@@ -26,7 +26,7 @@
 
 #define SLASH_P(X) ((X)=='\\' || (X) == '/')
 
-#define ROOTED_P(X) ((SLASH_P((X)[0]))|| ((X)[1] ==':'))
+#define ROOTED_P(X) ((SLASH_P((X)[0])) || ((X)[0] && (X)[1] ==':'))
 
 #define SLASH_CHAR '/'
 #define SLASH_STRING "/"