From 204b456c7c08bc40ffe1f21575461d92a544e92b Mon Sep 17 00:00:00 2001 From: hunt Date: Wed, 9 Mar 2005 21:30:05 +0000 Subject: Initial runtime checkin. --- runtime/docs/html/copy_8c-source.html | 111 ++++++++++++++++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 runtime/docs/html/copy_8c-source.html (limited to 'runtime/docs/html/copy_8c-source.html') diff --git a/runtime/docs/html/copy_8c-source.html b/runtime/docs/html/copy_8c-source.html new file mode 100644 index 00000000..2e21314c --- /dev/null +++ b/runtime/docs/html/copy_8c-source.html @@ -0,0 +1,111 @@ + + +SystemTap: SystemTap Runtime Library + + +
Intro | Functions | Defines | Enumerations | Enumeration Values
+ + +

copy.c

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00001 long _stp_strncpy_from_user(char *dst, const char __user *src, long count);
+00002 //static long __stp_strncpy_from_user(char *dst, const char __user *src, long count);
+00003 
+00004 #if defined (__i386__)
+00005 #define __stp_strncpy_from_user(dst,src,count,res)                         \
+00006 do {                                                                       \
+00007         int __d0, __d1, __d2;                                              \
+00008         __asm__ __volatile__(                                              \
+00009                 "       testl %1,%1\n"                                     \
+00010                 "       jz 2f\n"                                           \
+00011                 "0:     lodsb\n"                                           \
+00012                 "       stosb\n"                                           \
+00013                 "       testb %%al,%%al\n"                                 \
+00014                 "       jz 1f\n"                                           \
+00015                 "       decl %1\n"                                         \
+00016                 "       jnz 0b\n"                                          \
+00017                 "1:     subl %1,%0\n"                                      \
+00018                 "2:\n"                                                     \
+00019                 ".section .fixup,\"ax\"\n"                                 \
+00020                 "3:     movl %5,%0\n"                                      \
+00021                 "       jmp 2b\n"                                          \
+00022                 ".previous\n"                                              \
+00023                 ".section __ex_table,\"a\"\n"                              \
+00024                 "       .align 4\n"                                        \
+00025                 "       .long 0b,3b\n"                                     \
+00026                 ".previous"                                                \
+00027                 : "=d"(res), "=c"(count), "=&a" (__d0), "=&S" (__d1),      \
+00028                   "=&D" (__d2)                                             \
+00029                 : "i"(-EFAULT), "0"(count), "1"(count), "3"(src), "4"(dst) \
+00030                 : "memory");                                               \
+00031 } while (0)
+00032 #elif defined (__x86_64__)
+00033 #define __stp_strncpy_from_user(dst,src,count,res)                         \
+00034 do {                                                                       \
+00035         long __d0, __d1, __d2;                                             \
+00036         __asm__ __volatile__(                                              \
+00037                 "       testq %1,%1\n"                                     \
+00038                 "       jz 2f\n"                                           \
+00039                 "0:     lodsb\n"                                           \
+00040                 "       stosb\n"                                           \
+00041                 "       testb %%al,%%al\n"                                 \
+00042                 "       jz 1f\n"                                           \
+00043                 "       decq %1\n"                                         \
+00044                 "       jnz 0b\n"                                          \
+00045                 "1:     subq %1,%0\n"                                      \
+00046                 "2:\n"                                                     \
+00047                 ".section .fixup,\"ax\"\n"                                 \
+00048                 "3:     movq %5,%0\n"                                      \
+00049                 "       jmp 2b\n"                                          \
+00050                 ".previous\n"                                              \
+00051                 ".section __ex_table,\"a\"\n"                              \
+00052                 "       .align 8\n"                                        \
+00053                 "       .quad 0b,3b\n"                                     \
+00054                 ".previous"                                                \
+00055                 : "=r"(res), "=c"(count), "=&a" (__d0), "=&S" (__d1),      \
+00056                   "=&D" (__d2)                                             \
+00057                 : "i"(-EFAULT), "0"(count), "1"(count), "3"(src), "4"(dst) \
+00058                 : "memory");                                               \
+00059 } while (0)
+00060 #endif
+00061 
+00078 long
+00079 _stp_strncpy_from_user(char *dst, const char __user *src, long count)
+00080 {
+00081         long res;
+00082         __stp_strncpy_from_user(dst, src, count, res);
+00083         return res;
+00084 }
+00085 
+00099 unsigned long inline
+00100 _stp_copy_from_user (char *dst, const char __user *src, unsigned long count)
+00101 {
+00102         return __copy_from_user_inatomic(dst, src, count);
+00103 }
+00104 
+00115 int _stp_copy_argv_from_user (MAP list, char __user *__user *argv)
+00116 {
+00117         char str[128];
+00118         char __user *vstr;
+00119         int len;
+00120 
+00121         if (argv)
+00122                 argv++;
+00123 
+00124         while (argv != NULL) {
+00125                 if (get_user (vstr, argv))
+00126                         break;
+00127 
+00128                 if (vstr == NULL)
+00129                         break;
+00130                 
+00131                 len = _stp_strncpy_from_user(str, vstr, 128);
+00132                 str[len] = 0;
+00133                 _stp_list_add_str (list, str);
+00134                 argv++;
+00135         }
+00136         return list->num;
+00137 }
+
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+ + -- cgit