2002-04-20 Daniel Jacobowitz <drow@mvista.com>

        * gdbserver/mem-break.c: New file.
        * gdbserver/mem-break.h: New file.
        * gdbserver/Makefile.in: Add mem-break.o rule; update server.h
        dependencies.
        * gdbserver/inferiors.c (struct inferior_info): Add target_data
        member.
        (clear_inferiors): Free target_data member if set.
        (inferior_target_data, set_inferior_target_data): New functions.
        * gdbserver/linux-i386-low.c (i386_breakpoint, i386_breakpoint_len)
        (i386_stop_pc, i386_set_pc): New.  Add to the_low_target.
        * gdbserver/linux-low.c (linux_bp_reinsert): New variable.
        (struct inferior_linux_data): New.
        (linux_create_inferior): Use set_inferior_target_data.
        (linux_attach): Likewise.  Call add_inferior.
        (linux_wait_for_one_inferior): New function.
        (linux_wait): Call it.
        (linux_write_memory): Add const.
        (initialize_low): Call set_breakpoint_data.
        * gdbserver/linux-low.h (struct linux_target_ops): Add breakpoint
        handling members.
        * gdbserver/server.c (attach_inferior): Remove extra add_inferior
        call.
        * gdbserver/server.h: Include mem-break.h.  Update inferior.c
        prototypes.
        * gdbserver/target.c (read_inferior_memory)
        (write_inferior_memory): New functions.
        * gdbserver/target.h (read_inferior_memory)
        (write_inferior_memory): Change macros to prototypes.
        (struct target_ops): Update comments.  Add const to write_memory
        definition.

1 files changed, 71 insertions, 0 deletions

diff --git a/gdb/gdbserver/mem-break.h b/gdb/gdbserver/mem-break.h
new file mode 100644
index 00000000000..356e7630cab
--- /dev/null
+++ b/gdb/gdbserver/mem-break.h
@@ -0,0 +1,71 @@
+/* Memory breakpoint interfaces for the remote server for GDB.
+   Copyright 2002
+   Free Software Foundation, Inc.
+
+   Contributed by MontaVista Software.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef MEM_BREAK_H
+#define MEM_BREAK_H
+
+/* Breakpoints are opaque.  */
+
+/* Create a new breakpoint at WHERE, and call HANDLER when
+   it is hit.  */
+
+void set_breakpoint_at (CORE_ADDR where,
+			void (*handler) (CORE_ADDR));
+
+/* Create a reinsertion breakpoint at STOP_AT for the breakpoint
+   currently at STOP_PC (and temporarily remove the breakpoint at
+   STOP_PC).  */
+
+void reinsert_breakpoint_by_bp (CORE_ADDR stop_pc, CORE_ADDR stop_at);
+
+/* Change the status of the breakpoint at WHERE to inserted.  */
+
+void reinsert_breakpoint (CORE_ADDR where);
+
+/* Change the status of the breakpoint at WHERE to uninserted.  */
+
+void uninsert_breakpoint (CORE_ADDR where);
+
+/* See if any breakpoint claims ownership of STOP_PC.  Call the handler for
+   the breakpoint, if found.  */
+
+int check_breakpoints (CORE_ADDR stop_pc);
+
+/* See if any breakpoints shadow the target memory area from MEM_ADDR
+   to MEM_ADDR + MEM_LEN.  Update the data already read from the target
+   (in BUF) if necessary.  */
+
+void check_mem_read (CORE_ADDR mem_addr, char *buf, int mem_len);
+
+/* See if any breakpoints shadow the target memory area from MEM_ADDR
+   to MEM_ADDR + MEM_LEN.  Update the data to be written to the target
+   (in BUF) if necessary, as well as the original data for any breakpoints.  */
+
+void check_mem_write (CORE_ADDR mem_addr, char *buf, int mem_len);
+
+/* Set the byte pattern to insert for memory breakpoints.  This function
+   must be called before any breakpoints are set.  */
+
+void set_breakpoint_data (const char *bp_data, int bp_len);
+
+#endif /* MEM_BREAK_H */