From ee53d3b8685245febda44ac761877871ec4cd0f4 Mon Sep 17 00:00:00 2001 From: "kaf24@scramble.cl.cam.ac.uk" Date: Wed, 12 Mar 2003 00:15:31 +0000 Subject: bitkeeper revision 1.122.1.5 (3e6e7c23wQxW8Ugs0UKsqigrHkcXQg) mkbuildtree: new file .del-hypervisor-ifs~86b59453fcfcbc0d: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/hypervisor-ifs .del-usercopy.c~a4e3819a4723317b: Delete: xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/usercopy.c .del-sys_i386.c~ad2d4399a2d28db9: Delete: xenolinux-2.4.21-pre4-sparse/arch/xeno/kernel/sys_i386.c .del-strstr.c~a59de40cfa231931: Delete: xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/strstr.c .del-semaphore.c~e68c48eef7115b45: Delete: xenolinux-2.4.21-pre4-sparse/arch/xeno/kernel/semaphore.c .del-pageattr.c~f12f3a2d4d9a5533: Delete: xenolinux-2.4.21-pre4-sparse/arch/xeno/mm/pageattr.c .del-old-checksum.c~f071ac0bcd5b2d9a: Delete: xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/old-checksum.c .del-mmx.c~c322b85572d0e637: Delete: xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/mmx.c .del-memcpy.c~40a930c62e045f5: Delete: xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/memcpy.c .del-iodebug.c~23f7b78313546ddc: Delete: xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/iodebug.c .del-getuser.S~b9140bdb7786f6dc: Delete: xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/getuser.S .del-extable.c~d3064107fd4524e5: Delete: xenolinux-2.4.21-pre4-sparse/arch/xeno/mm/extable.c .del-dec_and_lock.c~702a868529eefccf: Delete: xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/dec_and_lock.c .del-checksum.S~a821c465832e250c: Delete: xenolinux-2.4.21-pre4-sparse/arch/xeno/lib/checksum.S .del-xor.h~998f147781a971b7: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/xor.h .del-vga.h~45c4f65abf0d3704: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/vga.h .del-user.h~dd2c2e4cf89a81: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/user.h .del-unistd.h~33920ed4177b943c: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/unistd.h .del-unaligned.h~535ed3d510980f67: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/unaligned.h .del-ucontext.h~217079ee95a5eb94: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/ucontext.h .del-uaccess.h~3681b94ef8d5a0f4: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/uaccess.h .del-types.h~c4fb05b781c9652c: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/types.h .del-tlb.h~6ad1bd639fc9d921: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/tlb.h .del-timex.h~51d9b0c83c732bcc: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/timex.h .del-termios.h~ccfbd8bcc37ae57d: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/termios.h .del-termbits.h~438385b2cd8fd6b0: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/termbits.h .del-string.h~673ad5d9e7f34adc: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/string.h .del-string-486.h~365fff788bc1adf5: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/string-486.h .del-statfs.h~65d9b1d7c4114f2e: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/statfs.h .del-stat.h~c1aa8136a8e00c11: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/stat.h .del-spinlock.h~ec9397b86265414c: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/spinlock.h .del-softirq.h~587d767979e60f4a: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/softirq.h .del-sockios.h~30f6e946644b28a4: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/sockios.h .del-socket.h~4b1ff6de54a2e75: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/socket.h .del-smplock.h~d5ea37028dfc0796: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/smplock.h .del-signal.h~bff6ca682e48d282: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/signal.h .del-siginfo.h~6e147c4b81453d48: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/siginfo.h .del-sigcontext.h~15a1460eea0fc80d: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/sigcontext.h .del-shmparam.h~97d1aa6d272dd55c: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/shmparam.h .del-shmbuf.h~d92a8c2e377edd83: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/shmbuf.h .del-setup.h~4250896c3e302c1d: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/setup.h .del-serial.h~584ec6aaea6b0efc: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/serial.h .del-sembuf.h~4fc6c36d718bc878: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/sembuf.h .del-semaphore.h~90a0e3df1d186e71: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/semaphore.h .del-ptrace.c~5c3f8d1f817aa462: Delete: xenolinux-2.4.21-pre4-sparse/arch/xeno/kernel/ptrace.c .del-init_task.c~319ec38b798d3c7c: Delete: xenolinux-2.4.21-pre4-sparse/arch/xeno/kernel/init_task.c .del-scatterlist.h~1988430d982706fb: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/scatterlist.h .del-rwsem.h~548d272fd25fd023: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/rwsem.h .del-rwlock.h~75a3e9a0d5b70d88: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/rwlock.h .del-resource.h~4ac2e8ff9316f133: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/resource.h .del-posix_types.h~14d068cffd4b8776: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/posix_types.h .del-poll.h~15c1158844d735b: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/poll.h .del-parport.h~ce6ec6eea26a26f: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/parport.h .del-param.h~1fcb86dbbfaae433: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/param.h .del-namei.h~f25c9c58c76cddf4: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/namei.h .del-mtrr.h~375ef594799aeb34: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/mtrr.h .del-msr.h~cbf3b3e52c9bed91: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/msr.h .del-msgbuf.h~ab21bfe6a970c7d6: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/msgbuf.h .del-mpspec.h~9a3c3e9cda38bf43: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/mpspec.h .del-module.h~e271946131c6cf33: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/module.h .del-mmx.h~bc63c7c24adb85ea: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/mmx.h .del-mman.h~43ec3a0326f0d774: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/mman.h .del-mca_dma.h~a4e495084d965428: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/mca_dma.h .del-mc146818rtc.h~d7e968dbd77bc13a: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/mc146818rtc.h .del-math_emu.h~fba78190435e5abd: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/math_emu.h .del-locks.h~e022163a8c6f92: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/locks.h .del-linux_logo.h~2034953cfe415a: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/linux_logo.h .del-ldt.h~191ca1efbffba82a: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/ldt.h .del-kmap_types.h~517fab0f9758f3b: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/kmap_types.h .del-keyboard.h~b2a7fe4183f53eb0: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/keyboard.h .del-ipcbuf.h~cee91af271f4ead9: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/ipcbuf.h .del-ipc.h~f6063a09bec6a01e: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/ipc.h .del-ioctls.h~cc185671abf46a0a: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/ioctls.h .del-ioctl.h~8603eb7a7f9acbad: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/ioctl.h .del-io_apic.h~9f66b09afe289021: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/io_apic.h .del-init.h~9d30d474b845bc1: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/init.h .del-ide.h~805c47c1a5ebf196: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/ide.h .del-i387.h~3b360e96fea6fe7: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/i387.h .del-hdreg.h~c4bbd6ffab3763d6: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/hdreg.h .del-hardirq.h~9b375250fe601395: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/hardirq.h .del-floppy.h~d6f10807cbe15906: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/floppy.h .del-fcntl.h~ee3e644a21150dde: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/fcntl.h .del-errno.h~bab55cfe5c4ff883: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/errno.h .del-elf.h~af645629b45e7fe7: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/elf.h .del-dma.h~938dff3f930de2e4: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/dma.h .del-div64.h~aa6562c04bfaf412: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/div64.h .del-delay.h~e3ba89df403d5622: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/delay.h .del-debugreg.h~b3975b26e222b6c3: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/debugreg.h .del-current.h~800e8314ee81c074: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/current.h .del-cpufeature.h~89666e396b49acdd: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/cpufeature.h .del-checksum.h~82af6c19c8cc4ff3: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/checksum.h .del-cache.h~694ef1ffd8450db4: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/cache.h .del-byteorder.h~f14ceb3575444d8a: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/byteorder.h .del-boot.h~83206c92a8649e3f: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/boot.h .del-bitops.h~e3c609f48d6cdb91: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/bitops.h .del-atomic.h~328669154749bfad: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/atomic.h .del-apicdef.h~2f13a4cfaa79d855: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/apicdef.h .del-apic.h~2690e76edadb6a8: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/apic.h .del-a.out.h~b638f33fa82e889d: Delete: xenolinux-2.4.21-pre4-sparse/include/asm-xeno/a.out.h --- .../include/asm-xeno/uaccess.h | 606 --------------------- 1 file changed, 606 deletions(-) delete mode 100644 xenolinux-2.4.21-pre4-sparse/include/asm-xeno/uaccess.h (limited to 'xenolinux-2.4.21-pre4-sparse/include/asm-xeno/uaccess.h') diff --git a/xenolinux-2.4.21-pre4-sparse/include/asm-xeno/uaccess.h b/xenolinux-2.4.21-pre4-sparse/include/asm-xeno/uaccess.h deleted file mode 100644 index ecc6693352..0000000000 --- a/xenolinux-2.4.21-pre4-sparse/include/asm-xeno/uaccess.h +++ /dev/null @@ -1,606 +0,0 @@ -#ifndef __i386_UACCESS_H -#define __i386_UACCESS_H - -/* - * User space memory access functions - */ -#include -#include -#include -#include - -#define VERIFY_READ 0 -#define VERIFY_WRITE 1 - -/* - * The fs value determines whether argument validity checking should be - * performed or not. If get_fs() == USER_DS, checking is performed, with - * get_fs() == KERNEL_DS, checking is bypassed. - * - * For historical reasons, these macros are grossly misnamed. - */ - -#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) }) - - -#define KERNEL_DS MAKE_MM_SEG(0xFFFFFFFF) -#define USER_DS MAKE_MM_SEG(PAGE_OFFSET) - -#define get_ds() (KERNEL_DS) -#define get_fs() (current->addr_limit) -#define set_fs(x) (current->addr_limit = (x)) - -#define segment_eq(a,b) ((a).seg == (b).seg) - -extern int __verify_write(const void *, unsigned long); - -#define __addr_ok(addr) ((unsigned long)(addr) < (current->addr_limit.seg)) - -/* - * Uhhuh, this needs 33-bit arithmetic. We have a carry.. - */ -#define __range_ok(addr,size) ({ \ - unsigned long flag,sum; \ - asm("addl %3,%1 ; sbbl %0,%0; cmpl %1,%4; sbbl $0,%0" \ - :"=&r" (flag), "=r" (sum) \ - :"1" (addr),"g" ((int)(size)),"g" (current->addr_limit.seg)); \ - flag; }) - -#ifdef CONFIG_X86_WP_WORKS_OK - -#define access_ok(type,addr,size) (__range_ok(addr,size) == 0) - -#else - -#define access_ok(type,addr,size) ( (__range_ok(addr,size) == 0) && \ - ((type) == VERIFY_READ || boot_cpu_data.wp_works_ok || \ - segment_eq(get_fs(),KERNEL_DS) || \ - __verify_write((void *)(addr),(size)))) - -#endif - -static inline int verify_area(int type, const void * addr, unsigned long size) -{ - return access_ok(type,addr,size) ? 0 : -EFAULT; -} - - -/* - * The exception table consists of pairs of addresses: the first is the - * address of an instruction that is allowed to fault, and the second is - * the address at which the program should continue. No registers are - * modified, so it is entirely up to the continuation code to figure out - * what to do. - * - * All the routines below use bits of fixup code that are out of line - * with the main instruction path. This means when everything is well, - * we don't even have to jump over them. Further, they do not intrude - * on our cache or tlb entries. - */ - -struct exception_table_entry -{ - unsigned long insn, fixup; -}; - -/* Returns 0 if exception not found and fixup otherwise. */ -extern unsigned long search_exception_table(unsigned long); - - -/* - * These are the main single-value transfer routines. They automatically - * use the right size if we just have the right pointer type. - * - * This gets kind of ugly. We want to return _two_ values in "get_user()" - * and yet we don't want to do any pointers, because that is too much - * of a performance impact. Thus we have a few rather ugly macros here, - * and hide all the uglyness from the user. - * - * The "__xxx" versions of the user access functions are versions that - * do not verify the address space, that must have been done previously - * with a separate "access_ok()" call (this is used when we do multiple - * accesses to the same area of user memory). - */ - -extern void __get_user_1(void); -extern void __get_user_2(void); -extern void __get_user_4(void); - -#define __get_user_x(size,ret,x,ptr) \ - __asm__ __volatile__("call __get_user_" #size \ - :"=a" (ret),"=d" (x) \ - :"0" (ptr)) - -/* Careful: we have to cast the result to the type of the pointer for sign reasons */ -#define get_user(x,ptr) \ -({ int __ret_gu,__val_gu; \ - switch(sizeof (*(ptr))) { \ - case 1: __get_user_x(1,__ret_gu,__val_gu,ptr); break; \ - case 2: __get_user_x(2,__ret_gu,__val_gu,ptr); break; \ - case 4: __get_user_x(4,__ret_gu,__val_gu,ptr); break; \ - default: __get_user_x(X,__ret_gu,__val_gu,ptr); break; \ - } \ - (x) = (__typeof__(*(ptr)))__val_gu; \ - __ret_gu; \ -}) - -extern void __put_user_1(void); -extern void __put_user_2(void); -extern void __put_user_4(void); -extern void __put_user_8(void); - -extern void __put_user_bad(void); - -#define put_user(x,ptr) \ - __put_user_check((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr))) - -#define __get_user(x,ptr) \ - __get_user_nocheck((x),(ptr),sizeof(*(ptr))) -#define __put_user(x,ptr) \ - __put_user_nocheck((__typeof__(*(ptr)))(x),(ptr),sizeof(*(ptr))) - -#define __put_user_nocheck(x,ptr,size) \ -({ \ - long __pu_err; \ - __put_user_size((x),(ptr),(size),__pu_err); \ - __pu_err; \ -}) - - -#define __put_user_check(x,ptr,size) \ -({ \ - long __pu_err = -EFAULT; \ - __typeof__(*(ptr)) *__pu_addr = (ptr); \ - if (access_ok(VERIFY_WRITE,__pu_addr,size)) \ - __put_user_size((x),__pu_addr,(size),__pu_err); \ - __pu_err; \ -}) - -#define __put_user_u64(x, addr, err) \ - __asm__ __volatile__( \ - "1: movl %%eax,0(%2)\n" \ - "2: movl %%edx,4(%2)\n" \ - "3:\n" \ - ".section .fixup,\"ax\"\n" \ - "4: movl %3,%0\n" \ - " jmp 3b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 4\n" \ - " .long 1b,4b\n" \ - " .long 2b,4b\n" \ - ".previous" \ - : "=r"(err) \ - : "A" (x), "r" (addr), "i"(-EFAULT), "0"(err)) - -#define __put_user_size(x,ptr,size,retval) \ -do { \ - retval = 0; \ - switch (size) { \ - case 1: __put_user_asm(x,ptr,retval,"b","b","iq"); break; \ - case 2: __put_user_asm(x,ptr,retval,"w","w","ir"); break; \ - case 4: __put_user_asm(x,ptr,retval,"l","","ir"); break; \ - case 8: __put_user_u64(x,ptr,retval); break; \ - default: __put_user_bad(); \ - } \ -} while (0) - -struct __large_struct { unsigned long buf[100]; }; -#define __m(x) (*(struct __large_struct *)(x)) - -/* - * Tell gcc we read from memory instead of writing: this is because - * we do not write to any memory gcc knows about, so there are no - * aliasing issues. - */ -#define __put_user_asm(x, addr, err, itype, rtype, ltype) \ - __asm__ __volatile__( \ - "1: mov"itype" %"rtype"1,%2\n" \ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "3: movl %3,%0\n" \ - " jmp 2b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 4\n" \ - " .long 1b,3b\n" \ - ".previous" \ - : "=r"(err) \ - : ltype (x), "m"(__m(addr)), "i"(-EFAULT), "0"(err)) - - -#define __get_user_nocheck(x,ptr,size) \ -({ \ - long __gu_err, __gu_val; \ - __get_user_size(__gu_val,(ptr),(size),__gu_err); \ - (x) = (__typeof__(*(ptr)))__gu_val; \ - __gu_err; \ -}) - -extern long __get_user_bad(void); - -#define __get_user_size(x,ptr,size,retval) \ -do { \ - retval = 0; \ - switch (size) { \ - case 1: __get_user_asm(x,ptr,retval,"b","b","=q"); break; \ - case 2: __get_user_asm(x,ptr,retval,"w","w","=r"); break; \ - case 4: __get_user_asm(x,ptr,retval,"l","","=r"); break; \ - default: (x) = __get_user_bad(); \ - } \ -} while (0) - -#define __get_user_asm(x, addr, err, itype, rtype, ltype) \ - __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" \ - ".section __ex_table,\"a\"\n" \ - " .align 4\n" \ - " .long 1b,3b\n" \ - ".previous" \ - : "=r"(err), ltype (x) \ - : "m"(__m(addr)), "i"(-EFAULT), "0"(err)) - - -/* - * Copy To/From Userspace - */ - -/* Generic arbitrary sized copy. */ -#define __copy_user(to,from,size) \ -do { \ - int __d0, __d1; \ - __asm__ __volatile__( \ - "0: rep; movsl\n" \ - " movl %3,%0\n" \ - "1: rep; movsb\n" \ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "3: lea 0(%3,%0,4),%0\n" \ - " jmp 2b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 4\n" \ - " .long 0b,3b\n" \ - " .long 1b,2b\n" \ - ".previous" \ - : "=&c"(size), "=&D" (__d0), "=&S" (__d1) \ - : "r"(size & 3), "0"(size / 4), "1"(to), "2"(from) \ - : "memory"); \ -} while (0) - -#define __copy_user_zeroing(to,from,size) \ -do { \ - int __d0, __d1; \ - __asm__ __volatile__( \ - "0: rep; movsl\n" \ - " movl %3,%0\n" \ - "1: rep; movsb\n" \ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "3: lea 0(%3,%0,4),%0\n" \ - "4: pushl %0\n" \ - " pushl %%eax\n" \ - " xorl %%eax,%%eax\n" \ - " rep; stosb\n" \ - " popl %%eax\n" \ - " popl %0\n" \ - " jmp 2b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 4\n" \ - " .long 0b,3b\n" \ - " .long 1b,4b\n" \ - ".previous" \ - : "=&c"(size), "=&D" (__d0), "=&S" (__d1) \ - : "r"(size & 3), "0"(size / 4), "1"(to), "2"(from) \ - : "memory"); \ -} while (0) - -/* We let the __ versions of copy_from/to_user inline, because they're often - * used in fast paths and have only a small space overhead. - */ -static inline unsigned long -__generic_copy_from_user_nocheck(void *to, const void *from, unsigned long n) -{ - __copy_user_zeroing(to,from,n); - return n; -} - -static inline unsigned long -__generic_copy_to_user_nocheck(void *to, const void *from, unsigned long n) -{ - __copy_user(to,from,n); - return n; -} - - -/* Optimize just a little bit when we know the size of the move. */ -#define __constant_copy_user(to, from, size) \ -do { \ - int __d0, __d1; \ - switch (size & 3) { \ - default: \ - __asm__ __volatile__( \ - "0: rep; movsl\n" \ - "1:\n" \ - ".section .fixup,\"ax\"\n" \ - "2: shl $2,%0\n" \ - " jmp 1b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 4\n" \ - " .long 0b,2b\n" \ - ".previous" \ - : "=c"(size), "=&S" (__d0), "=&D" (__d1)\ - : "1"(from), "2"(to), "0"(size/4) \ - : "memory"); \ - break; \ - case 1: \ - __asm__ __volatile__( \ - "0: rep; movsl\n" \ - "1: movsb\n" \ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "3: shl $2,%0\n" \ - "4: incl %0\n" \ - " jmp 2b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 4\n" \ - " .long 0b,3b\n" \ - " .long 1b,4b\n" \ - ".previous" \ - : "=c"(size), "=&S" (__d0), "=&D" (__d1)\ - : "1"(from), "2"(to), "0"(size/4) \ - : "memory"); \ - break; \ - case 2: \ - __asm__ __volatile__( \ - "0: rep; movsl\n" \ - "1: movsw\n" \ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "3: shl $2,%0\n" \ - "4: addl $2,%0\n" \ - " jmp 2b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 4\n" \ - " .long 0b,3b\n" \ - " .long 1b,4b\n" \ - ".previous" \ - : "=c"(size), "=&S" (__d0), "=&D" (__d1)\ - : "1"(from), "2"(to), "0"(size/4) \ - : "memory"); \ - break; \ - case 3: \ - __asm__ __volatile__( \ - "0: rep; movsl\n" \ - "1: movsw\n" \ - "2: movsb\n" \ - "3:\n" \ - ".section .fixup,\"ax\"\n" \ - "4: shl $2,%0\n" \ - "5: addl $2,%0\n" \ - "6: incl %0\n" \ - " jmp 3b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 4\n" \ - " .long 0b,4b\n" \ - " .long 1b,5b\n" \ - " .long 2b,6b\n" \ - ".previous" \ - : "=c"(size), "=&S" (__d0), "=&D" (__d1)\ - : "1"(from), "2"(to), "0"(size/4) \ - : "memory"); \ - break; \ - } \ -} while (0) - -/* Optimize just a little bit when we know the size of the move. */ -#define __constant_copy_user_zeroing(to, from, size) \ -do { \ - int __d0, __d1; \ - switch (size & 3) { \ - default: \ - __asm__ __volatile__( \ - "0: rep; movsl\n" \ - "1:\n" \ - ".section .fixup,\"ax\"\n" \ - "2: pushl %0\n" \ - " pushl %%eax\n" \ - " xorl %%eax,%%eax\n" \ - " rep; stosl\n" \ - " popl %%eax\n" \ - " popl %0\n" \ - " shl $2,%0\n" \ - " jmp 1b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 4\n" \ - " .long 0b,2b\n" \ - ".previous" \ - : "=c"(size), "=&S" (__d0), "=&D" (__d1)\ - : "1"(from), "2"(to), "0"(size/4) \ - : "memory"); \ - break; \ - case 1: \ - __asm__ __volatile__( \ - "0: rep; movsl\n" \ - "1: movsb\n" \ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "3: pushl %0\n" \ - " pushl %%eax\n" \ - " xorl %%eax,%%eax\n" \ - " rep; stosl\n" \ - " stosb\n" \ - " popl %%eax\n" \ - " popl %0\n" \ - " shl $2,%0\n" \ - " incl %0\n" \ - " jmp 2b\n" \ - "4: pushl %%eax\n" \ - " xorl %%eax,%%eax\n" \ - " stosb\n" \ - " popl %%eax\n" \ - " incl %0\n" \ - " jmp 2b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 4\n" \ - " .long 0b,3b\n" \ - " .long 1b,4b\n" \ - ".previous" \ - : "=c"(size), "=&S" (__d0), "=&D" (__d1)\ - : "1"(from), "2"(to), "0"(size/4) \ - : "memory"); \ - break; \ - case 2: \ - __asm__ __volatile__( \ - "0: rep; movsl\n" \ - "1: movsw\n" \ - "2:\n" \ - ".section .fixup,\"ax\"\n" \ - "3: pushl %0\n" \ - " pushl %%eax\n" \ - " xorl %%eax,%%eax\n" \ - " rep; stosl\n" \ - " stosw\n" \ - " popl %%eax\n" \ - " popl %0\n" \ - " shl $2,%0\n" \ - " addl $2,%0\n" \ - " jmp 2b\n" \ - "4: pushl %%eax\n" \ - " xorl %%eax,%%eax\n" \ - " stosw\n" \ - " popl %%eax\n" \ - " addl $2,%0\n" \ - " jmp 2b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 4\n" \ - " .long 0b,3b\n" \ - " .long 1b,4b\n" \ - ".previous" \ - : "=c"(size), "=&S" (__d0), "=&D" (__d1)\ - : "1"(from), "2"(to), "0"(size/4) \ - : "memory"); \ - break; \ - case 3: \ - __asm__ __volatile__( \ - "0: rep; movsl\n" \ - "1: movsw\n" \ - "2: movsb\n" \ - "3:\n" \ - ".section .fixup,\"ax\"\n" \ - "4: pushl %0\n" \ - " pushl %%eax\n" \ - " xorl %%eax,%%eax\n" \ - " rep; stosl\n" \ - " stosw\n" \ - " stosb\n" \ - " popl %%eax\n" \ - " popl %0\n" \ - " shl $2,%0\n" \ - " addl $3,%0\n" \ - " jmp 2b\n" \ - "5: pushl %%eax\n" \ - " xorl %%eax,%%eax\n" \ - " stosw\n" \ - " stosb\n" \ - " popl %%eax\n" \ - " addl $3,%0\n" \ - " jmp 2b\n" \ - "6: pushl %%eax\n" \ - " xorl %%eax,%%eax\n" \ - " stosb\n" \ - " popl %%eax\n" \ - " incl %0\n" \ - " jmp 3b\n" \ - ".previous\n" \ - ".section __ex_table,\"a\"\n" \ - " .align 4\n" \ - " .long 0b,4b\n" \ - " .long 1b,5b\n" \ - " .long 2b,6b\n" \ - ".previous" \ - : "=c"(size), "=&S" (__d0), "=&D" (__d1)\ - : "1"(from), "2"(to), "0"(size/4) \ - : "memory"); \ - break; \ - } \ -} while (0) - -unsigned long __generic_copy_to_user(void *, const void *, unsigned long); -unsigned long __generic_copy_from_user(void *, const void *, unsigned long); - -static inline unsigned long -__constant_copy_to_user(void *to, const void *from, unsigned long n) -{ - prefetch(from); - if (access_ok(VERIFY_WRITE, to, n)) - __constant_copy_user(to,from,n); - return n; -} - -static inline unsigned long -__constant_copy_from_user(void *to, const void *from, unsigned long n) -{ - if (access_ok(VERIFY_READ, from, n)) - __constant_copy_user_zeroing(to,from,n); - else - memset(to, 0, n); - return n; -} - -static inline unsigned long -__constant_copy_to_user_nocheck(void *to, const void *from, unsigned long n) -{ - __constant_copy_user(to,from,n); - return n; -} - -static inline unsigned long -__constant_copy_from_user_nocheck(void *to, const void *from, unsigned long n) -{ - __constant_copy_user_zeroing(to,from,n); - return n; -} - -#define copy_to_user(to,from,n) \ - (__builtin_constant_p(n) ? \ - __constant_copy_to_user((to),(from),(n)) : \ - __generic_copy_to_user((to),(from),(n))) - -#define copy_from_user(to,from,n) \ - (__builtin_constant_p(n) ? \ - __constant_copy_from_user((to),(from),(n)) : \ - __generic_copy_from_user((to),(from),(n))) - -#define __copy_to_user(to,from,n) \ - (__builtin_constant_p(n) ? \ - __constant_copy_to_user_nocheck((to),(from),(n)) : \ - __generic_copy_to_user_nocheck((to),(from),(n))) - -#define __copy_from_user(to,from,n) \ - (__builtin_constant_p(n) ? \ - __constant_copy_from_user_nocheck((to),(from),(n)) : \ - __generic_copy_from_user_nocheck((to),(from),(n))) - -long strncpy_from_user(char *dst, const char *src, long count); -long __strncpy_from_user(char *dst, const char *src, long count); -#define strlen_user(str) strnlen_user(str, ~0UL >> 1) -long strnlen_user(const char *str, long n); -unsigned long clear_user(void *mem, unsigned long len); -unsigned long __clear_user(void *mem, unsigned long len); - -#endif /* __i386_UACCESS_H */ -- cgit v1.2.3