linux-kernel - [PATCH 1/7] UML - Don't use glibc asm/user.h

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Message-ID: <20070823213806.GA9090@c2.user-mode-linux.org>
Date:	Thu, 23 Aug 2007 17:38:06 -0400
From:	Jeff Dike <jdike@...toit.com>
To:	Andrew Morton <akpm@...l.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	uml-devel <user-mode-linux-devel@...ts.sourceforge.net>,
	Toralf Förster <toralf.foerster@....de>,
	Daniel Gryniewicz <dang@...too.org>
Subject: [PATCH 1/7] UML - Don't use glibc asm/user.h

Stop including asm/user.h from libc - it seems to be disappearing from
distros.  It's replaced with sys/user.h which defines
user_fpregs_struct and user_fpxregs_struct instead of user_i387_struct
and struct user_fxsr_struct on i386.

As a bonus, on x86_64, I get to dump some stupid typedefs which were
needed in order to get asm/user.h to compile.

Signed-off-by: Jeff Dike <jdike@...ux.intel.com>
--
 arch/um/sys-i386/user-offsets.c   |    6 +++---
 arch/um/sys-x86_64/user-offsets.c |    9 +--------
 2 files changed, 4 insertions(+), 11 deletions(-)

Index: linux-2.6.22/arch/um/sys-i386/user-offsets.c
===================================================================
--- linux-2.6.22.orig/arch/um/sys-i386/user-offsets.c	2007-08-22 09:48:38.000000000 -0400
+++ linux-2.6.22/arch/um/sys-i386/user-offsets.c	2007-08-22 09:48:44.000000000 -0400
@@ -2,9 +2,9 @@
 #include <stddef.h>
 #include <signal.h>
 #include <sys/poll.h>
+#include <sys/user.h>
 #include <sys/mman.h>
 #include <asm/ptrace.h>
-#include <asm/user.h>
 
 #define DEFINE(sym, val) \
 	asm volatile("\n->" #sym " %0 " #val : : "i" (val))
@@ -48,8 +48,8 @@ void foo(void)
 	OFFSET(HOST_SC_FP_ST, _fpstate, _st);
 	OFFSET(HOST_SC_FXSR_ENV, _fpstate, _fxsr_env);
 
-	DEFINE_LONGS(HOST_FP_SIZE, sizeof(struct user_i387_struct));
-	DEFINE_LONGS(HOST_XFP_SIZE, sizeof(struct user_fxsr_struct));
+	DEFINE_LONGS(HOST_FP_SIZE, sizeof(struct user_fpregs_struct));
+	DEFINE_LONGS(HOST_XFP_SIZE, sizeof(struct user_fpxregs_struct));
 
 	DEFINE(HOST_IP, EIP);
 	DEFINE(HOST_SP, UESP);
Index: linux-2.6.22/arch/um/sys-x86_64/user-offsets.c
===================================================================
--- linux-2.6.22.orig/arch/um/sys-x86_64/user-offsets.c	2007-08-22 09:48:38.000000000 -0400
+++ linux-2.6.22/arch/um/sys-x86_64/user-offsets.c	2007-08-22 12:22:33.000000000 -0400
@@ -3,17 +3,10 @@
 #include <signal.h>
 #include <sys/poll.h>
 #include <sys/mman.h>
+#include <sys/user.h>
 #define __FRAME_OFFSETS
 #include <asm/ptrace.h>
 #include <asm/types.h>
-/* For some reason, x86_64 defines u64 and u32 only in <pci/types.h>, which I
- * refuse to include here, even though they're used throughout the headers.
- * These are used in asm/user.h, and that include can't be avoided because of
- * the sizeof(struct user_regs_struct) below.
- */
-typedef __u64 u64;
-typedef __u32 u32;
-#include <asm/user.h>
 
 #define DEFINE(sym, val) \
         asm volatile("\n->" #sym " %0 " #val : : "i" (val))
-
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