Patch from Emmanuel Raguet <raguet@crf.canon.fr> to add remote debug server

and RPC support to RTEMS.  Thanks. :)  Email follows:

    Hello,

    For Xmas, here is the Remote Debugger on RTEMS !

    Here are 2 patches for the Remote Debugger on RTEMS for pc386 from Linux
    host :

     - one for RTEMS it self,
     - one for GDB-4.17.


    1/ RTEMS patch
    --------------

    This patch adds 2 libraries :
     - a simplified SUN RPC library
     - the Remote Debugger library

    The configuration command is the following :
    ../rtems4/configure --target=i386-rtemself --enable-rtemsbsp=pc386
    --enable-rdbg

    The SUN RPC library is built only if networking is set.
    The RDBG library is built if networking and enable-rdbg are set.

    The function used to initialize the debugger is :
            rtems_rdbg_initialize ();

    A special function has been created to force a task to be
    in a "debug" state : enterRdbg().
    The use of this function is not mandatory.



    2/ GDB-4.17 patch
    -----------------

    This patch create a new RTEMS target for GDB-4.17.

    The configuration command is the following :
    ./configure --enable-shared --target=i386RTEMS

    To connect to a target, use :
      target rtems [your_site_address]

    Then, attach the target using : attach 1

    And... Debug ;)

    You can obtain the original GDB-4.17 on
    ftp://ftp.debian.org/debian/dists/stable/main/source/devel/gdb_4.17.orig.tar.gz

    This has been tested from a Debian 2.0.1 linux host.

1 files changed, 130 insertions, 0 deletions

diff --git a/c/src/librdbg/src/servutil.c b/c/src/librdbg/src/servutil.c
new file mode 100644
index 0000000000..40187faead
--- /dev/null
+++ b/c/src/librdbg/src/servutil.c
@@ -0,0 +1,130 @@
+/*
+ **********************************************************************
+ *
+ *  Component:	RDB
+ *  Module:	servutil.c
+ *
+ *  Synopsis:	Various utility routines
+ *
+ **********************************************************************
+ */
+
+#include <string.h>
+#include <rdbg/rdbg.h>
+#include <rdbg/servrpc.h>
+
+/*----- Management of per-process list ----*/
+
+    /*
+     *  ListAlloc - build up list entry.
+     *
+     *  Notes:
+     *  - this is a generic routine to build up entries in the per-connection
+     *    list. The fields list, list_sz and list_alloc are affected.
+     */
+
+    Boolean
+ListAlloc(buff, clst)
+     char *buff;
+     CONN_LIST *clst;		/* place to copy it */
+{
+    int		tmp;
+    char*	name;
+    int		new_len;
+    int		len;
+
+    tmp = strlen(buff);
+    new_len = (int)clst->list_sz + 1 + tmp;
+    if (clst->list_alloc < (unsigned)new_len) {
+	    /* need more space */
+	name = (char *)Realloc(clst->list, len = new_len + MAX_FILENAME);
+	if (name == NULL) {
+	    return(False);		/* failed, no space */
+	}
+	clst->list_alloc = len;
+	clst->list = name;
+    }
+    strcpy(clst->list + clst->list_sz, buff);
+    clst->list_sz += tmp;
+    return(True);
+}
+
+/*----- Management of processes -----*/
+
+    /*
+     *  FindPidEntry - locate pid_list entry from pid 
+     */
+
+    int
+FindPidEntry (pid)
+    int pid;			/* process identifier */
+{
+    int idx;
+
+	/* pid 0 is invalid, and signals a free slot */
+    if (pid_list == NULL  ||  pid == 0) {
+	return -1;
+    }
+    for (idx = 0; idx < pid_list_cnt; idx++) {
+	if (pid_list [idx].pid == pid )
+	    return idx;
+    }
+    return -1;
+}
+
+/*----- Debug suport -----*/
+
+#ifdef DDEBUG
+
+    /*
+     *  Names of debug primitives
+     */
+
+const char* PtraceNames [] = {
+
+"RPT_TRACEME", "RPT_PEEKTEXT", "RPT_PEEKDATA", "RPT_PEEKUSER",
+"RPT_POKETEXT", "RPT_POKEDATA", "RPT_POKEUSER", "RPT_CONT",
+"RPT_KILL", "RPT_SINGLESTEP", "RPT_ATTACH", "RPT_DETACH",
+"RPT_GETREGS", "RPT_SETREGS", "RPT_GETFPREGS", "RPT_SETFPREGS",
+"RPT_READDATA", "RPT_WRITEDATA", "RPT_READTEXT", "RPT_WRITETEXT",
+"RPT_GETFPAREGS", "RPT_SETFPAREGS", "RPT_22", "RPT_23",
+"RPT_SYSCALL", "RPT_DUMPCORE", "RPT_26", "RPT_27",
+"RPT_28", "RPT_GETUCODE", "RPT_30", "RPT_31",
+"RPT_32", "RPT_33", "RPT_34", "RPT_35",
+"RPT_36", "RPT_37", "RPT_38", "RPT_39",
+"RPT_40", "RPT_41", "RPT_42", "RPT_43",
+"RPT_44", "RPT_45", "RPT_46", "RPT_47",
+"RPT_48", "RPT_49", "RPT_GETTARGETTHREAD", "RPT_SETTARGETTHREAD",
+"RPT_THREADSUSPEND", "RPT_THREADRESUME", "RPT_THREADLIST", "RPT_GETTHREADNAME",
+"RPT_SETTHREADNAME", "RPT_SETTHREADREGS", "RPT_GETTHREADREGS",
+	"RPT_59",
+"RPT_60", "RPT_61", "RPT_62", "RPT_63",
+"RPT_64", "RPT_65", "RPT_66", "RPT_67",
+"RPT_68", "RPT_69", "RPT_70", "RPT_71",
+"RPT_72", "RPT_73", "RPT_74", "RPT_STEPRANGE",
+"RPT_CONTTO", "RPT_SETBREAK", "RPT_CLRBREAK", "RPT_GETBREAK",
+"RPT_GETNAME", "RPT_STOP",
+"RPT_PGETREGS", "RPT_PSETREGS",
+"RPT_PSETTHREADREGS", "RPT_PGETTHREADREGS"
+};
+
+const char*
+PtraceName(req)
+    int req;
+{
+    static char	bufret[40];
+
+    if ((req < 0) || (req >= sizeof(PtraceNames)/sizeof(char*))) {
+	sprintf(bufret, "BAD_REQ_%d", req);
+	return bufret;
+    }
+    return PtraceNames[req];
+}
+
+const char* BmsgNames [] = {
+    "?",         "WARM",   "WAIT",   "BREAK",
+    "EXEC_FAIL", "DETACH", "KILLED", "NOT_PRIM",
+    "NEW_PID" 
+};
+
+#endif /* DDEBUG */