[PATCH] uml: cross-build support : mk_thread

mk_thread converted

Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/um/Makefile-i386

@@ -35,7 +35,7 @@ $(SYS_DIR)/thread.h: $(SYS_UTIL_DIR)/mk_thread
 $(SYS_UTIL_DIR)/mk_sc: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
 	$(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@
 
-$(SYS_UTIL_DIR)/mk_thread: scripts_basic $(ARCH_SYMLINKS) $(GEN_HEADERS) FORCE
+$(SYS_UTIL_DIR)/mk_thread: scripts_basic $(ARCH_DIR)/kernel-offsets.h FORCE
 	$(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@
 
 $(SYS_UTIL_DIR): scripts_basic include/asm FORCE

arch/um/Makefile-x86_64

@@ -26,7 +26,7 @@ $(SYS_DIR)/thread.h: $(SYS_UTIL_DIR)/mk_thread
 $(SYS_UTIL_DIR)/mk_sc: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
 	$(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@
 
-$(SYS_UTIL_DIR)/mk_thread: scripts_basic $(ARCH_SYMLINKS) $(GEN_HEADERS) FORCE
+$(SYS_UTIL_DIR)/mk_thread: scripts_basic $(GEN_HEADERS) $(ARCH_DIR)/kernel-offsets.h FORCE
 	$(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@
 
 CLEAN_FILES += $(SYS_HEADERS)

arch/um/sys-i386/util/Makefile

@@ -1,9 +1,5 @@
-
 hostprogs-y	:= mk_sc mk_thread
 always		:= $(hostprogs-y)
 
-mk_thread-objs	:= mk_thread_kern.o mk_thread_user.o
-
-HOSTCFLAGS_mk_thread_kern.o	:= $(CFLAGS) $(CPPFLAGS)
-HOSTCFLAGS_mk_thread_user.o	:= $(USER_CFLAGS)
 HOSTCFLAGS_mk_sc.o := -I$(objtree)/arch/um
+HOSTCFLAGS_mk_thread.o := -I$(objtree)/arch/um

arch/um/sys-i386/util/mk_thread.c

@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include <kernel-offsets.h>
+
+int main(int argc, char **argv)
+{
+  printf("/*\n");
+  printf(" * Generated by mk_thread\n");
+  printf(" */\n");
+  printf("\n");
+  printf("#ifndef __UM_THREAD_H\n");
+  printf("#define __UM_THREAD_H\n");
+  printf("\n");
+  printf("#define TASK_DEBUGREGS(task) ((unsigned long *) "
+	 "&(((char *) (task))[%d]))\n", TASK_DEBUGREGS);
+#ifdef TASK_EXTERN_PID
+  printf("#define TASK_EXTERN_PID(task) *((int *) &(((char *) (task))[%d]))\n",
+	 TASK_EXTERN_PID);
+#endif
+  printf("\n");
+  printf("#endif\n");
+  return(0);
+}

arch/um/sys-x86_64/util/Makefile

@@ -4,8 +4,5 @@
 hostprogs-y	:= mk_sc mk_thread
 always		:= $(hostprogs-y)
 
-mk_thread-objs	:= mk_thread_kern.o mk_thread_user.o
-
-HOSTCFLAGS_mk_thread_kern.o	:= $(CFLAGS) $(CPPFLAGS)
-HOSTCFLAGS_mk_thread_user.o	:= $(USER_CFLAGS)
 HOSTCFLAGS_mk_sc.o := -I$(objtree)/arch/um
+HOSTCFLAGS_mk_thread.o := -I$(objtree)/arch/um

arch/um/sys-x86_64/util/mk_thread.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+#include <kernel-offsets.h>
+
+int main(int argc, char **argv)
+{
+  printf("/*\n");
+  printf(" * Generated by mk_thread\n");
+  printf(" */\n");
+  printf("\n");
+  printf("#ifndef __UM_THREAD_H\n");
+  printf("#define __UM_THREAD_H\n");
+  printf("\n");
+#ifdef TASK_EXTERN_PID
+  printf("#define TASK_EXTERN_PID(task) *((int *) &(((char *) (task))[%d]))\n",
+	 TASK_EXTERN_PID);
+#endif
+  printf("\n");
+  printf("#endif\n");
+  return(0);
+}