Unable to build x86 hosted debugger for ARM Linux, due to missing target

dependencies.  Created ARM Linux specific arm-linux-tdep.c file and moved
missing code into it from arm-linux-nat.c.

2000-04-05  Scott Bambrough <scottb@netwinder.org>

	* arm-linux-tdep.c: New file.
	* arm-linux-nat.c (fetch_fpregs): Remove unused code.
	  (arm_get_longjmp_target): Moved it and all defines
	  it uses to arm-linux-tdep.c.
	  (arm_linux_extract_return_value): Moved to
	  arm-linux-tdep.c.
	* config/arm/linux.mt: Add arm-linux-tdep.c to TDEPFILES.

4 files changed, 92 insertions, 55 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index deb5622..0221721 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,13 @@
+2000-04-05  Scott Bambrough <scottb@netwinder.org>
+
+	* arm-linux-tdep.c: New file.
+	* arm-linux-nat.c (fetch_fpregs): Remove unused code.
+	  (arm_get_longjmp_target): Moved it and all defines 
+	  it uses to arm-linux-tdep.c.
+	  (arm_linux_extract_return_value): Moved to
+	  arm-linux-tdep.c.
+	* config/arm/linux.mt: Add arm-linux-tdep.c to TDEPFILES.
+
 2000-04-04  Nick Duffek  <nsd@cygnus.com>
 
 	* infrun.c (handle_inferior_event): Call target_mourn_inferior
diff --git a/gdb/arm-linux-nat.c b/gdb/arm-linux-nat.c
index 2c8cc07..b8d30e5 100644
--- a/gdb/arm-linux-nat.c
+++ b/gdb/arm-linux-nat.c
@@ -170,7 +170,6 @@ fetch_fpregs (void)
   for (regno = F0_REGNUM; regno <= F7_REGNUM; regno++)
     {
       int fn = regno - F0_REGNUM;
-      unsigned int *p = (unsigned int *) &registers[REGISTER_BYTE (regno)];
 
       switch (fp.fType[fn])
 	{
@@ -323,40 +322,6 @@ store_inferior_registers (int regno)
     store_fpregs ();
 }
 
-#ifdef GET_LONGJMP_TARGET
-
-/* Figure out where the longjmp will land.  We expect that we have
-   just entered longjmp and haven't yet altered r0, r1, so the
-   arguments are still in the registers.  (A1_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. */
-
-#define LONGJMP_TARGET_SIZE 	sizeof(int)
-#define JB_ELEMENT_SIZE		sizeof(int)
-#define JB_SL			18
-#define JB_FP			19
-#define JB_SP			20
-#define JB_PC			21
-
-int
-arm_get_longjmp_target (CORE_ADDR * pc)
-{
-  CORE_ADDR jb_addr;
-  char buf[LONGJMP_TARGET_SIZE];
-
-  jb_addr = read_register (A1_REGNUM);
-
-  if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf,
-			  LONGJMP_TARGET_SIZE))
-    return 0;
-
-  *pc = extract_address (buf, LONGJMP_TARGET_SIZE);
-  return 1;
-}
-
-#endif /* GET_LONGJMP_TARGET */
-
 /*
    Dynamic Linking on ARM Linux
    ----------------------------
@@ -495,25 +460,6 @@ arm_linux_kernel_u_size (void)
   return (sizeof (struct user));
 }
 
-/* Extract from an array REGBUF containing the (raw) register state
-   a function return value of type TYPE, and copy that, in virtual format,
-   into VALBUF.  */
-
-void
-arm_linux_extract_return_value (struct type *type,
-				char regbuf[REGISTER_BYTES],
-				char *valbuf)
-{
-  /* ScottB: This needs to be looked at to handle the different
-     floating point emulators on ARM Linux.  Right now the code
-     assumes that fetch inferior registers does the right thing for
-     GDB.  I suspect this won't handle NWFPE registers correctly, nor
-     will the default ARM version (arm_extract_return_value()).  */
-
-  int regnum = (TYPE_CODE_FLT == TYPE_CODE (type)) ? F0_REGNUM : A1_REGNUM;
-  memcpy (valbuf, &regbuf[REGISTER_BYTE (regnum)], TYPE_LENGTH (type));
-}
-
 static unsigned int
 get_linux_version (unsigned int *vmajor,
 		   unsigned int *vminor,
diff --git a/gdb/arm-linux-tdep.c b/gdb/arm-linux-tdep.c
new file mode 100644
index 0000000..76becf7
--- /dev/null
+++ b/gdb/arm-linux-tdep.c
@@ -0,0 +1,81 @@
+/* GNU/Linux on ARM target support.
+   Copyright 1999, 2000 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 "defs.h"
+#include "symtab.h"
+#include "gdbtypes.h"
+
+#ifdef GET_LONGJMP_TARGET
+
+/* Figure out where the longjmp will land.  We expect that we have
+   just entered longjmp and haven't yet altered r0, r1, so the
+   arguments are still in the registers.  (A1_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. */
+
+#define LONGJMP_TARGET_SIZE 	sizeof(int)
+#define JB_ELEMENT_SIZE		sizeof(int)
+#define JB_SL			18
+#define JB_FP			19
+#define JB_SP			20
+#define JB_PC			21
+
+int
+arm_get_longjmp_target (CORE_ADDR * pc)
+{
+  CORE_ADDR jb_addr;
+  char buf[LONGJMP_TARGET_SIZE];
+
+  jb_addr = read_register (A1_REGNUM);
+
+  if (target_read_memory (jb_addr + JB_PC * JB_ELEMENT_SIZE, buf,
+			  LONGJMP_TARGET_SIZE))
+    return 0;
+
+  *pc = extract_address (buf, LONGJMP_TARGET_SIZE);
+  return 1;
+}
+
+#endif /* GET_LONGJMP_TARGET */
+
+/* Extract from an array REGBUF containing the (raw) register state
+   a function return value of type TYPE, and copy that, in virtual format,
+   into VALBUF.  */
+
+void
+arm_linux_extract_return_value (struct type *type,
+				char regbuf[REGISTER_BYTES],
+				char *valbuf)
+{
+  /* ScottB: This needs to be looked at to handle the different
+     floating point emulators on ARM Linux.  Right now the code
+     assumes that fetch inferior registers does the right thing for
+     GDB.  I suspect this won't handle NWFPE registers correctly, nor
+     will the default ARM version (arm_extract_return_value()).  */
+
+  int regnum = (TYPE_CODE_FLT == TYPE_CODE (type)) ? F0_REGNUM : A1_REGNUM;
+  memcpy (valbuf, &regbuf[REGISTER_BYTE (regnum)], TYPE_LENGTH (type));
+}
+
+void
+_initialize_arm_linux_tdep (void)
+{
+}
diff --git a/gdb/config/arm/linux.mt b/gdb/config/arm/linux.mt
index b85ae48..4939d56 100644
--- a/gdb/config/arm/linux.mt
+++ b/gdb/config/arm/linux.mt
@@ -1,5 +1,5 @@
 # Target: ARM based machine running GNU/Linux
 TM_FILE= tm-linux.h
-TDEPFILES= arm-tdep.o
+TDEPFILES= arm-tdep.o arm-linux-tdep.o
 
 GDBSERVER_DEPFILES= low-linux.o