[PATCH] uml makefiles sanitized

UML makefiles sanitized:
 - number of generated headers reduced to 2 (from user-offsets.c and
   kernel-offsets.c resp.).  The rest is made constant and simply
   includes those two.
 - mk_... helpers are gone now that we don't need to generate these
   headers
 - arch/um/include2 removed since everything under arch/um/include/sysdep
   is constant now and symlink can point straight to source tree.
 - dependencies seriously simplified.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

6 files changed, 39 insertions, 118 deletions

diff --git a/arch/um/sys-i386/Makefile b/arch/um/sys-i386/Makefile
index 4ca2a22..6dfeb70 100644
--- a/arch/um/sys-i386/Makefile
+++ b/arch/um/sys-i386/Makefile
@@ -18,6 +18,4 @@ module.c-dir = kernel
 
 $(obj)/stub_segv.o : _c_flags = $(call unprofile,$(CFLAGS))
 
-subdir- := util
-
 include arch/um/scripts/Makefile.unmap
diff --git a/arch/um/sys-i386/kernel-offsets.c b/arch/um/sys-i386/kernel-offsets.c
index a1070af..35db850 100644
--- a/arch/um/sys-i386/kernel-offsets.c
+++ b/arch/um/sys-i386/kernel-offsets.c
@@ -18,9 +18,9 @@
 
 void foo(void)
 {
-	OFFSET(TASK_DEBUGREGS, task_struct, thread.arch.debugregs);
+	OFFSET(HOST_TASK_DEBUGREGS, task_struct, thread.arch.debugregs);
 #ifdef CONFIG_MODE_TT
-	OFFSET(TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid);
+	OFFSET(HOST_TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid);
 #endif
 #include <common-offsets.h>
 }
diff --git a/arch/um/sys-i386/user-offsets.c b/arch/um/sys-i386/user-offsets.c
index 3ceaabc..677fc26 100644
--- a/arch/um/sys-i386/user-offsets.c
+++ b/arch/um/sys-i386/user-offsets.c
@@ -7,47 +7,48 @@
 #define DEFINE(sym, val) \
         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
 
+#define DEFINE_LONGS(sym, val) \
+        asm volatile("\n->" #sym " %0 " #val : : "i" (val/sizeof(unsigned long)))
+
 #define OFFSET(sym, str, mem) \
 	DEFINE(sym, offsetof(struct str, mem));
 
 void foo(void)
 {
-	OFFSET(SC_IP, sigcontext, eip);
-	OFFSET(SC_SP, sigcontext, esp);
-	OFFSET(SC_FS, sigcontext, fs);
-	OFFSET(SC_GS, sigcontext, gs);
-	OFFSET(SC_DS, sigcontext, ds);
-	OFFSET(SC_ES, sigcontext, es);
-	OFFSET(SC_SS, sigcontext, ss);
-	OFFSET(SC_CS, sigcontext, cs);
-	OFFSET(SC_EFLAGS, sigcontext, eflags);
-	OFFSET(SC_EAX, sigcontext, eax);
-	OFFSET(SC_EBX, sigcontext, ebx);
-	OFFSET(SC_ECX, sigcontext, ecx);
-	OFFSET(SC_EDX, sigcontext, edx);
-	OFFSET(SC_EDI, sigcontext, edi);
-	OFFSET(SC_ESI, sigcontext, esi);
-	OFFSET(SC_EBP, sigcontext, ebp);
-	OFFSET(SC_TRAPNO, sigcontext, trapno);
-	OFFSET(SC_ERR, sigcontext, err);
-	OFFSET(SC_CR2, sigcontext, cr2);
-	OFFSET(SC_FPSTATE, sigcontext, fpstate);
-	OFFSET(SC_SIGMASK, sigcontext, oldmask);
-	OFFSET(SC_FP_CW, _fpstate, cw);
-	OFFSET(SC_FP_SW, _fpstate, sw);
-	OFFSET(SC_FP_TAG, _fpstate, tag);
-	OFFSET(SC_FP_IPOFF, _fpstate, ipoff);
-	OFFSET(SC_FP_CSSEL, _fpstate, cssel);
-	OFFSET(SC_FP_DATAOFF, _fpstate, dataoff);
-	OFFSET(SC_FP_DATASEL, _fpstate, datasel);
-	OFFSET(SC_FP_ST, _fpstate, _st);
-	OFFSET(SC_FXSR_ENV, _fpstate, _fxsr_env);
+	OFFSET(HOST_SC_IP, sigcontext, eip);
+	OFFSET(HOST_SC_SP, sigcontext, esp);
+	OFFSET(HOST_SC_FS, sigcontext, fs);
+	OFFSET(HOST_SC_GS, sigcontext, gs);
+	OFFSET(HOST_SC_DS, sigcontext, ds);
+	OFFSET(HOST_SC_ES, sigcontext, es);
+	OFFSET(HOST_SC_SS, sigcontext, ss);
+	OFFSET(HOST_SC_CS, sigcontext, cs);
+	OFFSET(HOST_SC_EFLAGS, sigcontext, eflags);
+	OFFSET(HOST_SC_EAX, sigcontext, eax);
+	OFFSET(HOST_SC_EBX, sigcontext, ebx);
+	OFFSET(HOST_SC_ECX, sigcontext, ecx);
+	OFFSET(HOST_SC_EDX, sigcontext, edx);
+	OFFSET(HOST_SC_EDI, sigcontext, edi);
+	OFFSET(HOST_SC_ESI, sigcontext, esi);
+	OFFSET(HOST_SC_EBP, sigcontext, ebp);
+	OFFSET(HOST_SC_TRAPNO, sigcontext, trapno);
+	OFFSET(HOST_SC_ERR, sigcontext, err);
+	OFFSET(HOST_SC_CR2, sigcontext, cr2);
+	OFFSET(HOST_SC_FPSTATE, sigcontext, fpstate);
+	OFFSET(HOST_SC_SIGMASK, sigcontext, oldmask);
+	OFFSET(HOST_SC_FP_CW, _fpstate, cw);
+	OFFSET(HOST_SC_FP_SW, _fpstate, sw);
+	OFFSET(HOST_SC_FP_TAG, _fpstate, tag);
+	OFFSET(HOST_SC_FP_IPOFF, _fpstate, ipoff);
+	OFFSET(HOST_SC_FP_CSSEL, _fpstate, cssel);
+	OFFSET(HOST_SC_FP_DATAOFF, _fpstate, dataoff);
+	OFFSET(HOST_SC_FP_DATASEL, _fpstate, datasel);
+	OFFSET(HOST_SC_FP_ST, _fpstate, _st);
+	OFFSET(HOST_SC_FXSR_ENV, _fpstate, _fxsr_env);
 
-	DEFINE(HOST_FRAME_SIZE, FRAME_SIZE);
-	DEFINE(HOST_FP_SIZE,
-		sizeof(struct user_i387_struct) / sizeof(unsigned long));
-	DEFINE(HOST_XFP_SIZE,
-	       sizeof(struct user_fxsr_struct) / sizeof(unsigned long));
+	DEFINE_LONGS(HOST_FRAME_SIZE, FRAME_SIZE);
+	DEFINE_LONGS(HOST_FP_SIZE, sizeof(struct user_i387_struct));
+	DEFINE_LONGS(HOST_XFP_SIZE, sizeof(struct user_fxsr_struct));
 
 	DEFINE(HOST_IP, EIP);
 	DEFINE(HOST_SP, UESP);
@@ -65,5 +66,5 @@ void foo(void)
 	DEFINE(HOST_FS, FS);
 	DEFINE(HOST_ES, ES);
 	DEFINE(HOST_GS, GS);
-	DEFINE(__UM_FRAME_SIZE, sizeof(struct user_regs_struct));
+	DEFINE(UM_FRAME_SIZE, sizeof(struct user_regs_struct));
 }
diff --git a/arch/um/sys-i386/util/Makefile b/arch/um/sys-i386/util/Makefile
deleted file mode 100644
index bf61afd..0000000
--- a/arch/um/sys-i386/util/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-hostprogs-y	:= mk_sc mk_thread
-always		:= $(hostprogs-y)
-
-HOSTCFLAGS_mk_sc.o := -I$(objtree)/arch/um
-HOSTCFLAGS_mk_thread.o := -I$(objtree)/arch/um
diff --git a/arch/um/sys-i386/util/mk_sc.c b/arch/um/sys-i386/util/mk_sc.c
deleted file mode 100644
index 04c0d73..0000000
--- a/arch/um/sys-i386/util/mk_sc.c
+++ /dev/null
@@ -1,51 +0,0 @@
-#include <stdio.h>
-#include <user-offsets.h>
-
-#define SC_OFFSET(name, field) \
-  printf("#define " #name "(sc) *((unsigned long *) &(((char *) (sc))[%d]))\n",\
-	 name)
-
-#define SC_FP_OFFSET(name, field) \
-  printf("#define " #name \
-	 "(sc) *((unsigned long *) &(((char *) (SC_FPSTATE(sc)))[%d]))\n",\
-	 name)
-
-#define SC_FP_OFFSET_PTR(name, field, type) \
-  printf("#define " #name \
-	 "(sc) ((" type " *) &(((char *) (SC_FPSTATE(sc)))[%d]))\n",\
-	 name)
-
-int main(int argc, char **argv)
-{
-  SC_OFFSET(SC_IP, eip);
-  SC_OFFSET(SC_SP, esp);
-  SC_OFFSET(SC_FS, fs);
-  SC_OFFSET(SC_GS, gs);
-  SC_OFFSET(SC_DS, ds);
-  SC_OFFSET(SC_ES, es);
-  SC_OFFSET(SC_SS, ss);
-  SC_OFFSET(SC_CS, cs);
-  SC_OFFSET(SC_EFLAGS, eflags);
-  SC_OFFSET(SC_EAX, eax);
-  SC_OFFSET(SC_EBX, ebx);
-  SC_OFFSET(SC_ECX, ecx);
-  SC_OFFSET(SC_EDX, edx);
-  SC_OFFSET(SC_EDI, edi);
-  SC_OFFSET(SC_ESI, esi);
-  SC_OFFSET(SC_EBP, ebp);
-  SC_OFFSET(SC_TRAPNO, trapno);
-  SC_OFFSET(SC_ERR, err);
-  SC_OFFSET(SC_CR2, cr2);
-  SC_OFFSET(SC_FPSTATE, fpstate);
-  SC_OFFSET(SC_SIGMASK, oldmask);
-  SC_FP_OFFSET(SC_FP_CW, cw);
-  SC_FP_OFFSET(SC_FP_SW, sw);
-  SC_FP_OFFSET(SC_FP_TAG, tag);
-  SC_FP_OFFSET(SC_FP_IPOFF, ipoff);
-  SC_FP_OFFSET(SC_FP_CSSEL, cssel);
-  SC_FP_OFFSET(SC_FP_DATAOFF, dataoff);
-  SC_FP_OFFSET(SC_FP_DATASEL, datasel);
-  SC_FP_OFFSET_PTR(SC_FP_ST, _st, "struct _fpstate");
-  SC_FP_OFFSET_PTR(SC_FXSR_ENV, _fxsr_env, "void");
-  return(0);
-}
diff --git a/arch/um/sys-i386/util/mk_thread.c b/arch/um/sys-i386/util/mk_thread.c
deleted file mode 100644
index 7470d0d..0000000
--- a/arch/um/sys-i386/util/mk_thread.c
+++ /dev/null
@@ -1,22 +0,0 @@
-#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);
-}