* configure,configure.in: Add target sparclet.

    * monitor.h,monitor.c:
    Added monitor flags MO_NO_ECHO_ON_SETMEM (don't expect echo on
    setmem command), MO_RUN_FIRST_TIME (if command to start process
    running on target is different from one to continue execution),
    MO_HEX_PREFIX (if addresses from monitor have a "0x" prefix).
    * monitor.c,parse.c,sparc-tdep.c:
    Don't require strings in the registers array.  This is to allow
    NULLs to be place holders in the tm-*.h file so that only minor
    changes are needed when a new processor is introduced (eg, one
    without floating point).
    * sparc-tdep.c: Conditionally remove dependancies on floating point.
    * sparclet-rom.c,config/sparc/sparclet.mt,config/sparc/tm-sparclet.h:
    New files for target sparclet.
    * symfile.c: Add option for 2nd parameter on load command : a load
    offset added to the vma of each section.

3 files changed, 106 insertions, 0 deletions

diff --git a/gdb/config/sparc/.Sanitize b/gdb/config/sparc/.Sanitize
index 3d69adb..2e12f02 100644
--- a/gdb/config/sparc/.Sanitize
+++ b/gdb/config/sparc/.Sanitize
@@ -44,6 +44,7 @@ tm-nbsd.h
 tm-sp64.h
 tm-sp64sim.h
 tm-sparc.h
+tm-sparclet.h
 tm-sparclite.h
 tm-sparclynx.h
 tm-spc-em.h
diff --git a/gdb/config/sparc/sparclet.mt b/gdb/config/sparc/sparclet.mt
new file mode 100644
index 0000000..f08cfd7
--- /dev/null
+++ b/gdb/config/sparc/sparclet.mt
@@ -0,0 +1,3 @@
+# Target: SPARC embedded Sparclet monitor
+TDEPFILES= sparc-tdep.o monitor.o sparclet-rom.o dsrec.o
+TM_FILE= tm-sparclet.h
diff --git a/gdb/config/sparc/tm-sparclet.h b/gdb/config/sparc/tm-sparclet.h
new file mode 100644
index 0000000..1a73cc9
--- /dev/null
+++ b/gdb/config/sparc/tm-sparclet.h
@@ -0,0 +1,102 @@
+/* Target machine definitions for GDB for an embedded SPARC.
+   Copyright 1989, 1992, 1993 Free Software Foundation, Inc.
+
+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.  */
+
+#include "sparc/tm-sparc.h"
+
+#define TARGET_SPARCLET 1
+
+/* overrides of tm-sparc.h */
+
+/* Initializer for an array of names of registers.
+   There should be NUM_REGS strings in this initializer.  */
+/* Sparclet has no fp! */
+/* Compiler maps types for floats by number, so can't 
+   change the numbers here. */
+
+#undef REGISTER_NAMES
+/* g0 removed - Sparclet returns error if attempt to access. */
+/* psr removed - Sparclet does not return ": " in response, 
+   the monitor is therefore unable to get the expected response delimiter, 
+   causing a timeout. */
+#define REGISTER_NAMES  \
+{ "", "g1", "g2", "g3", "g4", "g5", "g6", "g7",	\
+  "o0", "o1", "o2", "o3", "o4", "o5", "o6", "o7",	\
+  "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",	\
+  "i0", "i1", "i2", "i3", "i4", "i5", "i6", "i7",	\
+                                                                \
+  0, 0, 0, 0, 0, 0, 0, 0,       \
+  0, 0, 0, 0, 0, 0, 0, 0, \
+  0, 0, 0, 0, 0, 0, 0, 0,       \
+  0, 0, 0, 0, 0, 0, 0, 0,       \
+                                                                \
+  "y", 0, "wim", "tbr", "pc", "npc", 0, 0 }
+
+/* Remove FP dependant code which was defined in tm-sparc.h */
+#undef	FP0_REGNUM /* Floating point register 0 */
+#undef	FPS_REGNUM /* Floating point status register */
+#undef 	CPS_REGNUM /* Coprocessor status register */
+
+#undef EXTRACT_RETURN_VALUE
+#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF)          \
+  {                                                                    \
+      memcpy ((VALBUF),                            \
+          (char *)(REGBUF) + REGISTER_RAW_SIZE (O0_REGNUM) * 8 +       \
+          (TYPE_LENGTH(TYPE) >= REGISTER_RAW_SIZE (O0_REGNUM)      \
+           ? 0 : REGISTER_RAW_SIZE (O0_REGNUM) - TYPE_LENGTH(TYPE)),   \
+          TYPE_LENGTH(TYPE));                      \
+  }
+#undef STORE_RETURN_VALUE
+#define STORE_RETURN_VALUE(TYPE,VALBUF) \
+  {                                                                          \
+      /* Other values are returned in register %o0.  */                      \
+      write_register_bytes (REGISTER_BYTE (O0_REGNUM), (VALBUF),         \
+                TYPE_LENGTH (TYPE));  \
+  }
+#undef PRINT_REGISTER_HOOK
+#define PRINT_REGISTER_HOOK(regno)
+
+/* Override the standard gdb prompt when compiled for this target.  */
+    
+#define DEFAULT_PROMPT  "(gdbslet) "
+
+/* Offsets into jmp_buf.  Not defined by Sun, but at least documented in a
+   comment in <machine/setjmp.h>! */
+
+#define JB_ELEMENT_SIZE 4	/* Size of each element in jmp_buf */
+
+#define JB_ONSSTACK 0
+#define JB_SIGMASK 1
+#define JB_SP 2
+#define JB_PC 3
+#define JB_NPC 4
+#define JB_PSR 5
+#define JB_G1 6
+#define JB_O0 7
+#define JB_WBCNT 8
+
+/* Figure out where the longjmp will land.  We expect that we have just entered
+   longjmp and haven't yet setup the stack frame, so the args are still in the
+   output regs.  %o0 (O0_REGNUM) points at the jmp_buf structure from which we
+   extract the pc (JB_PC) that we will land at.  The pc is copied into ADDR.
+   This routine returns true on success */
+
+extern int
+get_longjmp_target PARAMS ((CORE_ADDR *));
+
+#define GET_LONGJMP_TARGET(ADDR) get_longjmp_target(ADDR)