1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 *** To edit the content of this header, modify the corresponding 11 *** source file (e.g. under external/kernel-headers/original/) then 12 *** run bionic/libc/kernel/tools/update_all.py 13 *** 14 *** Any manual change here will be lost the next time this script will 15 *** be run. You've been warned! 16 *** 17 **************************************************************************** 18 ****************************************************************************/ 19 #ifndef _ASM_UACCESS_H 20 #define _ASM_UACCESS_H 21 #include <linux/kernel.h> 22 #include <linux/errno.h> 23 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 24 #include <linux/thread_info.h> 25 #include <asm-generic/uaccess.h> 26 #define __UA_LIMIT 0x80000000UL 27 #define __UA_ADDR ".word" 28 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 29 #define __UA_LA "la" 30 #define __UA_ADDU "addu" 31 #define __UA_t0 "$8" 32 #define __UA_t1 "$9" 33 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 34 #define KERNEL_DS ((mm_segment_t) { 0UL }) 35 #define USER_DS ((mm_segment_t) { __UA_LIMIT }) 36 #define VERIFY_READ 0 37 #define VERIFY_WRITE 1 38 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 39 #define get_ds() (KERNEL_DS) 40 #define get_fs() (current_thread_info()->addr_limit) 41 #define set_fs(x) (current_thread_info()->addr_limit = (x)) 42 #define segment_eq(a, b) ((a).seg == (b).seg) 43 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 44 #define __ua_size(size) ((__builtin_constant_p(size) && (signed long) (size) > 0) ? 0 : (size)) 45 #define __access_mask get_fs().seg 46 #define __access_ok(addr, size, mask) (((signed long)((mask) & ((addr) | ((addr) + (size)) | __ua_size(size)))) == 0) 47 #define access_ok(type, addr, size) likely(__access_ok((unsigned long)(addr), (size), __access_mask)) 48 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 49 #define put_user(x,ptr) __put_user_check((x), (ptr), sizeof(*(ptr))) 50 #define get_user(x,ptr) __get_user_check((x), (ptr), sizeof(*(ptr))) 51 #define __put_user(x,ptr) __put_user_nocheck((x), (ptr), sizeof(*(ptr))) 52 #define __get_user(x,ptr) __get_user_nocheck((x), (ptr), sizeof(*(ptr))) 53 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 54 struct __large_struct { unsigned long buf[100]; }; 55 #define __m(x) (*(struct __large_struct __user *)(x)) 56 #define __GET_USER_DW(val, ptr) __get_user_asm_ll32(val, ptr) 57 #define __get_user_common(val, size, ptr) do { switch (size) { case 1: __get_user_asm(val, "lb", ptr); break; case 2: __get_user_asm(val, "lh", ptr); break; case 4: __get_user_asm(val, "lw", ptr); break; case 8: __GET_USER_DW(val, ptr); break; default: __get_user_unknown(); break; } } while (0) 58 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 59 #define __get_user_nocheck(x, ptr, size) ({ long __gu_err; __get_user_common((x), size, ptr); __gu_err; }) 60 #define __get_user_check(x, ptr, size) ({ long __gu_err = -EFAULT; const __typeof__(*(ptr)) __user * __gu_ptr = (ptr); if (likely(access_ok(VERIFY_READ, __gu_ptr, size))) __get_user_common((x), size, __gu_ptr); __gu_err; }) 61 #define __get_user_asm(val, insn, addr) { long __gu_tmp; __asm__ __volatile__( "1: " insn " %1, %3 \n" "2: \n" " .section .fixup,\"ax\" \n" "3: li %0, %4 \n" " j 2b \n" " .previous \n" " .section __ex_table,\"a\" \n" " "__UA_ADDR "\t1b, 3b \n" " .previous \n" : "=r" (__gu_err), "=r" (__gu_tmp) : "0" (0), "o" (__m(addr)), "i" (-EFAULT)); (val) = (__typeof__(*(addr))) __gu_tmp; } 62 #define __get_user_asm_ll32(val, addr) { union { unsigned long long l; __typeof__(*(addr)) t; } __gu_tmp; __asm__ __volatile__( "1: lw %1, (%3) \n" "2: lw %D1, 4(%3) \n" "3: .section .fixup,\"ax\" \n" "4: li %0, %4 \n" " move %1, $0 \n" " move %D1, $0 \n" " j 3b \n" " .previous \n" " .section __ex_table,\"a\" \n" " " __UA_ADDR " 1b, 4b \n" " " __UA_ADDR " 2b, 4b \n" " .previous \n" : "=r" (__gu_err), "=&r" (__gu_tmp.l) : "0" (0), "r" (addr), "i" (-EFAULT)); (val) = __gu_tmp.t; } 63 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 64 #define __PUT_USER_DW(ptr) __put_user_asm_ll32(ptr) 65 #define __put_user_nocheck(x, ptr, size) ({ __typeof__(*(ptr)) __pu_val; long __pu_err = 0; __pu_val = (x); switch (size) { case 1: __put_user_asm("sb", ptr); break; case 2: __put_user_asm("sh", ptr); break; case 4: __put_user_asm("sw", ptr); break; case 8: __PUT_USER_DW(ptr); break; default: __put_user_unknown(); break; } __pu_err; }) 66 #define __put_user_check(x, ptr, size) ({ __typeof__(*(ptr)) __user *__pu_addr = (ptr); __typeof__(*(ptr)) __pu_val = (x); long __pu_err = -EFAULT; if (likely(access_ok(VERIFY_WRITE, __pu_addr, size))) { switch (size) { case 1: __put_user_asm("sb", __pu_addr); break; case 2: __put_user_asm("sh", __pu_addr); break; case 4: __put_user_asm("sw", __pu_addr); break; case 8: __PUT_USER_DW(__pu_addr); break; default: __put_user_unknown(); break; } } __pu_err; }) 67 #define __put_user_asm(insn, ptr) { __asm__ __volatile__( "1: " insn " %z2, %3 # __put_user_asm\n" "2: \n" " .section .fixup,\"ax\" \n" "3: li %0, %4 \n" " j 2b \n" " .previous \n" " .section __ex_table,\"a\" \n" " " __UA_ADDR " 1b, 3b \n" " .previous \n" : "=r" (__pu_err) : "0" (0), "Jr" (__pu_val), "o" (__m(ptr)), "i" (-EFAULT)); } 68 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 69 #define __put_user_asm_ll32(ptr) { __asm__ __volatile__( "1: sw %2, (%3) # __put_user_asm_ll32 \n" "2: sw %D2, 4(%3) \n" "3: \n" " .section .fixup,\"ax\" \n" "4: li %0, %4 \n" " j 3b \n" " .previous \n" " .section __ex_table,\"a\" \n" " " __UA_ADDR " 1b, 4b \n" " " __UA_ADDR " 2b, 4b \n" " .previous" : "=r" (__pu_err) : "0" (0), "r" (__pu_val), "r" (ptr), "i" (-EFAULT)); } 70 #ifdef MODULE 71 #define __MODULE_JAL(destination) ".set\tnoat\n\t" __UA_LA "\t$1, " #destination "\n\t" "jalr\t$1\n\t" ".set\tat\n\t" 72 #else 73 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 74 #define __MODULE_JAL(destination) "jal\t" #destination "\n\t" 75 #endif 76 #define DADDI_SCRATCH "$0" 77 #define __invoke_copy_to_user(to, from, n) ({ register void __user *__cu_to_r __asm__("$4"); register const void *__cu_from_r __asm__("$5"); register long __cu_len_r __asm__("$6"); __cu_to_r = (to); __cu_from_r = (from); __cu_len_r = (n); __asm__ __volatile__( __MODULE_JAL(__copy_user) : "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r) : : "$8", "$9", "$10", "$11", "$12", "$15", "$24", "$31", DADDI_SCRATCH, "memory"); __cu_len_r; }) 78 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 79 #define __copy_to_user(to, from, n) ({ void __user *__cu_to; const void *__cu_from; long __cu_len; might_sleep(); __cu_to = (to); __cu_from = (from); __cu_len = (n); __cu_len = __invoke_copy_to_user(__cu_to, __cu_from, __cu_len); __cu_len; }) 80 #define __copy_to_user_inatomic(to, from, n) ({ void __user *__cu_to; const void *__cu_from; long __cu_len; __cu_to = (to); __cu_from = (from); __cu_len = (n); __cu_len = __invoke_copy_to_user(__cu_to, __cu_from, __cu_len); __cu_len; }) 81 #define __copy_from_user_inatomic(to, from, n) ({ void *__cu_to; const void __user *__cu_from; long __cu_len; __cu_to = (to); __cu_from = (from); __cu_len = (n); __cu_len = __invoke_copy_from_user_inatomic(__cu_to, __cu_from, __cu_len); __cu_len; }) 82 #define copy_to_user(to, from, n) ({ void __user *__cu_to; const void *__cu_from; long __cu_len; might_sleep(); __cu_to = (to); __cu_from = (from); __cu_len = (n); if (access_ok(VERIFY_WRITE, __cu_to, __cu_len)) __cu_len = __invoke_copy_to_user(__cu_to, __cu_from, __cu_len); __cu_len; }) 83 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 84 #define __invoke_copy_from_user(to, from, n) ({ register void *__cu_to_r __asm__("$4"); register const void __user *__cu_from_r __asm__("$5"); register long __cu_len_r __asm__("$6"); __cu_to_r = (to); __cu_from_r = (from); __cu_len_r = (n); __asm__ __volatile__( ".set\tnoreorder\n\t" __MODULE_JAL(__copy_user) ".set\tnoat\n\t" __UA_ADDU "\t$1, %1, %2\n\t" ".set\tat\n\t" ".set\treorder" : "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r) : : "$8", "$9", "$10", "$11", "$12", "$15", "$24", "$31", DADDI_SCRATCH, "memory"); __cu_len_r; }) 85 #define __invoke_copy_from_user_inatomic(to, from, n) ({ register void *__cu_to_r __asm__("$4"); register const void __user *__cu_from_r __asm__("$5"); register long __cu_len_r __asm__("$6"); __cu_to_r = (to); __cu_from_r = (from); __cu_len_r = (n); __asm__ __volatile__( ".set\tnoreorder\n\t" __MODULE_JAL(__copy_user_inatomic) ".set\tnoat\n\t" __UA_ADDU "\t$1, %1, %2\n\t" ".set\tat\n\t" ".set\treorder" : "+r" (__cu_to_r), "+r" (__cu_from_r), "+r" (__cu_len_r) : : "$8", "$9", "$10", "$11", "$12", "$15", "$24", "$31", DADDI_SCRATCH, "memory"); __cu_len_r; }) 86 #define __copy_from_user(to, from, n) ({ void *__cu_to; const void __user *__cu_from; long __cu_len; might_sleep(); __cu_to = (to); __cu_from = (from); __cu_len = (n); __cu_len = __invoke_copy_from_user(__cu_to, __cu_from, __cu_len); __cu_len; }) 87 #define copy_from_user(to, from, n) ({ void *__cu_to; const void __user *__cu_from; long __cu_len; might_sleep(); __cu_to = (to); __cu_from = (from); __cu_len = (n); if (access_ok(VERIFY_READ, __cu_from, __cu_len)) __cu_len = __invoke_copy_from_user(__cu_to, __cu_from, __cu_len); __cu_len; }) 88 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 89 #define __copy_in_user(to, from, n) __copy_from_user(to, from, n) 90 #define copy_in_user(to, from, n) ({ void __user *__cu_to; const void __user *__cu_from; long __cu_len; might_sleep(); __cu_to = (to); __cu_from = (from); __cu_len = (n); if (likely(access_ok(VERIFY_READ, __cu_from, __cu_len) && access_ok(VERIFY_WRITE, __cu_to, __cu_len))) __cu_len = __invoke_copy_from_user(__cu_to, __cu_from, __cu_len); __cu_len; }) 91 #define clear_user(addr,n) ({ void __user * __cl_addr = (addr); unsigned long __cl_size = (n); if (__cl_size && access_ok(VERIFY_WRITE, ((unsigned long)(__cl_addr)), __cl_size)) __cl_size = __clear_user(__cl_addr, __cl_size); __cl_size; }) 92 struct exception_table_entry 93 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 94 { 95 unsigned long insn; 96 unsigned long nextinsn; 97 }; 98 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */ 99 #endif 100