Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764129AbYF0Vud (ORCPT ); Fri, 27 Jun 2008 17:50:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1764393AbYF0Vig (ORCPT ); Fri, 27 Jun 2008 17:38:36 -0400 Received: from mx1.redhat.com ([66.187.233.31]:60798 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1764283AbYF0Vid (ORCPT ); Fri, 27 Jun 2008 17:38:33 -0400 From: Glauber Costa To: linux-kernel@vger.kernel.org Cc: tglx@linutronix.de, mingo@elte.hu, x86@kernel.org Subject: [PATCH 33/39] merge __get_user_asm and its users. Date: Fri, 27 Jun 2008 18:34:40 -0300 Message-Id: <1214602486-17080-34-git-send-email-gcosta@redhat.com> X-Mailer: git-send-email 1.5.5.1 In-Reply-To: <1214602486-17080-33-git-send-email-gcosta@redhat.com> References: <1214602486-17080-1-git-send-email-gcosta@redhat.com> <1214602486-17080-2-git-send-email-gcosta@redhat.com> <1214602486-17080-3-git-send-email-gcosta@redhat.com> <1214602486-17080-4-git-send-email-gcosta@redhat.com> <1214602486-17080-5-git-send-email-gcosta@redhat.com> <1214602486-17080-6-git-send-email-gcosta@redhat.com> <1214602486-17080-7-git-send-email-gcosta@redhat.com> <1214602486-17080-8-git-send-email-gcosta@redhat.com> <1214602486-17080-9-git-send-email-gcosta@redhat.com> <1214602486-17080-10-git-send-email-gcosta@redhat.com> <1214602486-17080-11-git-send-email-gcosta@redhat.com> <1214602486-17080-12-git-send-email-gcosta@redhat.com> <1214602486-17080-13-git-send-email-gcosta@redhat.com> <1214602486-17080-14-git-send-email-gcosta@redhat.com> <1214602486-17080-15-git-send-email-gcosta@redhat.com> <1214602486-17080-16-git-send-email-gcosta@redhat.com> <1214602486-17080-17-git-send-email-gcosta@redhat.com> <1214602486-17080-18-git-send-email-gcosta@redhat.com> <1214602486-17080-19-git-send-email-gcosta@redhat.com> <1214602486-17080-20-git-send-email-gcosta@redhat.com> <1214602486-17080-21-git-send-email-gcosta@redhat.com> <1214602486-17080-22-git-send-email-gcosta@redhat.com> <1214602486-17080-23-git-send-email-gcosta@redhat.com> <1214602486-17080-24-git-send-email-gcosta@redhat.com> <1214602486-17080-25-git-send-email-gcosta@redhat.com> <1214602486-17080-26-git-send-email-gcosta@redhat.com> <1214602486-17080-27-git-send-email-gcosta@redhat.com> <1214602486-17080-28-git-send-email-gcosta@redhat.com> <1214602486-17080-29-git-send-email-gcosta@redhat.com> <1214602486-17080-30-git-send-email-gcosta@redhat.com> <1214602486-17080-31-git-send-email-gcosta@redhat.com> <1214602486-17080-32-git-send-email-gcosta@redhat.com> <1214602486-17080-33-git-send-email-gcosta@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6029 Lines: 193 Move __get_user_asm and __get_user_size and __get_user_nocheck to uaccess.h. This requires us to define a macro at __get_user_size for the 64-bit access case. Signed-off-by: Glauber Costa --- include/asm-x86/uaccess.h | 50 +++++++++++++++++++++++++++++++++++++++++- include/asm-x86/uaccess_32.h | 41 ---------------------------------- include/asm-x86/uaccess_64.h | 43 ------------------------------------ 3 files changed, 49 insertions(+), 85 deletions(-) diff --git a/include/asm-x86/uaccess.h b/include/asm-x86/uaccess.h index 8479be3..4ff31c5 100644 --- a/include/asm-x86/uaccess.h +++ b/include/asm-x86/uaccess.h @@ -234,6 +234,47 @@ do { \ #endif +#ifdef CONFIG_X86_32 +#define __get_user_asm_u64(x, ptr, retval, errret) (x) = __get_user_bad() +#else +#define __get_user_asm_u64(x, ptr, retval, errret) \ + __get_user_asm(x, ptr, retval, "q", "", "=r", errret) +#endif + +#define __get_user_size(x, ptr, size, retval, errret) \ +do { \ + retval = 0; \ + __chk_user_ptr(ptr); \ + switch (size) { \ + case 1: \ + __get_user_asm(x, ptr, retval, "b", "b", "=q", errret); \ + break; \ + case 2: \ + __get_user_asm(x, ptr, retval, "w", "w", "=r", errret); \ + break; \ + case 4: \ + __get_user_asm(x, ptr, retval, "l", "k", "=r", errret); \ + break; \ + case 8: \ + __get_user_asm_u64(x, ptr, retval, errret); \ + break; \ + default: \ + (x) = __get_user_bad(); \ + } \ +} while (0) + +#define __get_user_asm(x, addr, err, itype, rtype, ltype, errret) \ + asm volatile("1: mov"itype" %2,%"rtype"1\n" \ + "2:\n" \ + ".section .fixup,\"ax\"\n" \ + "3: mov %3,%0\n" \ + " xor"itype" %"rtype"1,%"rtype"1\n" \ + " jmp 2b\n" \ + ".previous\n" \ + _ASM_EXTABLE(1b, 3b) \ + : "=r" (err), ltype(x) \ + : "m" (__m(addr)), "i" (errret), "0" (err)) + #define __put_user_nocheck(x, ptr, size) \ ({ \ long __pu_err; \ @@ -241,7 +282,14 @@ do { \ __pu_err; \ }) - +#define __get_user_nocheck(x, ptr, size) \ +({ \ + long __gu_err; \ + unsigned long __gu_val; \ + __get_user_size(__gu_val, (ptr), (size), __gu_err, -EFAULT); \ + (x) = (__force __typeof__(*(ptr)))__gu_val; \ + __gu_err; \ +}) /* FIXME: this hack is definitely wrong -AK */ struct __large_struct { unsigned long buf[100]; }; diff --git a/include/asm-x86/uaccess_32.h b/include/asm-x86/uaccess_32.h index fab7557..ebfe6b2 100644 --- a/include/asm-x86/uaccess_32.h +++ b/include/asm-x86/uaccess_32.h @@ -145,47 +145,6 @@ extern void __put_user_8(void); #define __put_user(x, ptr) \ __put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr))) -#define __get_user_nocheck(x, ptr, size) \ -({ \ - long __gu_err; \ - unsigned long __gu_val; \ - __get_user_size(__gu_val, (ptr), (size), __gu_err, -EFAULT); \ - (x) = (__typeof__(*(ptr)))__gu_val; \ - __gu_err; \ -}) - -#define __get_user_size(x, ptr, size, retval, errret) \ -do { \ - retval = 0; \ - __chk_user_ptr(ptr); \ - switch (size) { \ - case 1: \ - __get_user_asm(x, ptr, retval, "b", "b", "=q", errret); \ - break; \ - case 2: \ - __get_user_asm(x, ptr, retval, "w", "w", "=r", errret); \ - break; \ - case 4: \ - __get_user_asm(x, ptr, retval, "l", "", "=r", errret); \ - break; \ - default: \ - (x) = __get_user_bad(); \ - } \ -} while (0) - -#define __get_user_asm(x, addr, err, itype, rtype, ltype, errret) \ - asm volatile("1: mov"itype" %2,%"rtype"1\n" \ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "3: movl %3,%0\n" \ - " xor"itype" %"rtype"1,%"rtype"1\n" \ - " jmp 2b\n" \ - ".previous\n" \ - _ASM_EXTABLE(1b, 3b) \ - : "=r" (err), ltype (x) \ - : "m" (__m(addr)), "i" (errret), "0" (err)) - - unsigned long __must_check __copy_to_user_ll (void __user *to, const void *from, unsigned long n); unsigned long __must_check __copy_from_user_ll diff --git a/include/asm-x86/uaccess_64.h b/include/asm-x86/uaccess_64.h index e0875d7..42a9769 100644 --- a/include/asm-x86/uaccess_64.h +++ b/include/asm-x86/uaccess_64.h @@ -57,49 +57,6 @@ extern void __put_user_bad(void); __pu_err; \ }) -#define __get_user_nocheck(x, ptr, size) \ -({ \ - int __gu_err; \ - unsigned long __gu_val; \ - __get_user_size(__gu_val, (ptr), (size), __gu_err, -EFAULT);\ - (x) = (__force typeof(*(ptr)))__gu_val; \ - __gu_err; \ -}) - -#define __get_user_size(x, ptr, size, retval, errret) \ -do { \ - retval = 0; \ - __chk_user_ptr(ptr); \ - switch (size) { \ - case 1: \ - __get_user_asm(x, ptr, retval, "b", "b", "=q", errret);\ - break; \ - case 2: \ - __get_user_asm(x, ptr, retval, "w", "w", "=r", errret);\ - break; \ - case 4: \ - __get_user_asm(x, ptr, retval, "l", "k", "=r", errret);\ - break; \ - case 8: \ - __get_user_asm(x, ptr, retval, "q", "", "=r", errret); \ - break; \ - default: \ - (x) = __get_user_bad(); \ - } \ -} while (0) - -#define __get_user_asm(x, addr, err, itype, rtype, ltype, errno) \ - asm volatile("1: mov"itype" %2,%"rtype"1\n" \ - "2:\n" \ - ".section .fixup, \"ax\"\n" \ - "3: mov %3,%0\n" \ - " xor"itype" %"rtype"1,%"rtype"1\n" \ - " jmp 2b\n" \ - ".previous\n" \ - _ASM_EXTABLE(1b, 3b) \ - : "=r" (err), ltype (x) \ - : "m" (__m(addr)), "i"(errno), "0"(err)) - /* * Copy To/From Userspace */ -- 1.5.5.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/