/[dynamips]/upstream/dynamips-0.2.6-RC4/utils.h
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Annotation of /upstream/dynamips-0.2.6-RC4/utils.h

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Revision 4 - (hide annotations)
Sat Oct 6 16:06:49 2007 UTC (13 years ago) by dpavlin
Original Path: upstream/dynamips-0.2.6-RC3/utils.h
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File size: 7666 byte(s)
dynamips-0.2.6-RC3

1 dpavlin 1 /*
2     * Cisco 7200 (Predator) simulation platform.
3     * Copyright (c) 2005,2006 Christophe Fillot (cf@utc.fr)
4     */
5    
6     #ifndef __UTILS_H__
7     #define __UTILS_H__
8    
9     #include <stdarg.h>
10     #include <sys/types.h>
11     #include <sys/mman.h>
12     #include <sys/time.h>
13     #include <time.h>
14     #include <netinet/in.h>
15    
16     /* True/False definitions */
17     #ifndef FALSE
18     #define FALSE 0
19     #endif
20    
21     #ifndef TRUE
22     #define TRUE 1
23     #endif
24    
25     /* Endianness */
26     #define ARCH_BIG_ENDIAN 0x4321
27     #define ARCH_LITTLE_ENDIAN 0x1234
28    
29     #if defined(PPC) || defined(__powerpc__) || defined(__ppc__)
30     #define ARCH_BYTE_ORDER ARCH_BIG_ENDIAN
31     #elif defined(__sparc) || defined(__sparc__)
32     #define ARCH_BYTE_ORDER ARCH_BIG_ENDIAN
33     #elif defined(__alpha) || defined(__alpha__)
34     #define ARCH_BYTE_ORDER ARCH_LITTLE_ENDIAN
35     #elif defined(__i386) || defined(__i386__) || defined(i386)
36     #define ARCH_BYTE_ORDER ARCH_LITTLE_ENDIAN
37     #elif defined(__x86_64__)
38     #define ARCH_BYTE_ORDER ARCH_LITTLE_ENDIAN
39     #endif
40    
41     #ifndef ARCH_BYTE_ORDER
42     #error Please define your architecture in utils.h!
43     #endif
44    
45     /* Host to VM (big-endian) conversion functions */
46     #if ARCH_BYTE_ORDER == ARCH_BIG_ENDIAN
47     #define htovm16(x) (x)
48     #define htovm32(x) (x)
49     #define htovm64(x) (x)
50    
51     #define vmtoh16(x) (x)
52     #define vmtoh32(x) (x)
53     #define vmtoh64(x) (x)
54     #else
55     #define htovm16(x) (htons(x))
56     #define htovm32(x) (htonl(x))
57     #define htovm64(x) (swap64(x))
58    
59     #define vmtoh16(x) (ntohs(x))
60     #define vmtoh32(x) (ntohl(x))
61     #define vmtoh64(x) (swap64(x))
62     #endif
63    
64     /* Useful attributes for functions */
65     #define asmlinkage __attribute__((regparm(0)))
66     #define fastcall __attribute__((regparm(3)))
67    
68     #if __GNUC__ > 2
69     #define forced_inline inline __attribute__((always_inline))
70     #define no_inline __attribute__ ((noinline))
71     #else
72     #define forced_inline inline
73     #define no_inline
74     #endif
75    
76     #if __GNUC__ > 2
77     /* http://kerneltrap.org/node/4705 */
78     #define likely(x) __builtin_expect((x),1)
79     #define unlikely(x) __builtin_expect((x),0)
80     #else
81     #define likely(x) (x)
82     #define unlikely(x) (x)
83     #endif
84    
85     /* Common types */
86     typedef unsigned char m_uint8_t;
87     typedef signed char m_int8_t;
88    
89     typedef unsigned short m_uint16_t;
90     typedef signed short m_int16_t;
91    
92     typedef unsigned int m_uint32_t;
93     typedef signed int m_int32_t;
94    
95     typedef unsigned long long m_uint64_t;
96     typedef signed long long m_int64_t;
97    
98     typedef unsigned long m_iptr_t;
99     typedef m_uint64_t m_tmcnt_t;
100    
101     /* Forward declarations */
102     typedef struct vm_instance vm_instance_t;
103     typedef struct insn_block insn_block_t;
104     typedef struct insn_exec_page insn_exec_page_t;
105    
106     /* MIPS instruction */
107     typedef m_uint32_t mips_insn_t;
108    
109     /* Max and min macro */
110     #define m_max(a,b) (((a) > (b)) ? (a) : (b))
111     #define m_min(a,b) (((a) < (b)) ? (a) : (b))
112    
113     /* A simple macro for adjusting pointers */
114     #define PTR_ADJUST(type,ptr,size) (type)((char *)(ptr) + (size))
115    
116     /* Size of a field in a structure */
117     #define SIZEOF(st,field) (sizeof(((st *)NULL)->field))
118    
119     /* Compute offset of a field in a structure */
120     #define OFFSET(st,f) ((long)&((st *)(NULL))->f)
121    
122     /* MMAP */
123     #ifndef MAP_ANONYMOUS
124     #define MAP_ANONYMOUS MAP_ANON
125     #endif
126    
127     /* List item */
128     typedef struct m_list m_list_t;
129     struct m_list {
130     void *data;
131     m_list_t *next;
132     };
133    
134     /* MTS mapping info */
135     typedef struct {
136     m_uint64_t vaddr;
137     m_uint64_t paddr;
138     m_uint64_t len;
139     m_uint32_t cached;
140     m_uint32_t tlb_index;
141     }mts_map_t;
142    
143     /* Global logfile */
144     extern FILE *log_file;
145    
146     /* Check status of a bit */
147     static inline int check_bit(u_int old,u_int new,u_int bit)
148     {
149     int mask = 1 << bit;
150    
151     if ((old & mask) && !(new & mask))
152     return(1); /* bit unset */
153    
154     if (!(old & mask) && (new & mask))
155     return(2); /* bit set */
156    
157     /* no change */
158     return(0);
159     }
160    
161     /* Sign-extension */
162     static forced_inline m_int64_t sign_extend(m_int64_t x,int len)
163     {
164     len = 64 - len;
165     return (x << len) >> len;
166     }
167    
168     /* Extract bits from a 32-bit values */
169     static inline int bits(m_uint32_t val,int start,int end)
170     {
171     return((val >> start) & ((1 << (end-start+1)) - 1));
172     }
173    
174     /* Normalize a size */
175     static inline u_int normalize_size(u_int val,u_int nb,int shift)
176     {
177     return(((val+nb-1) & ~(nb-1)) >> shift);
178     }
179    
180     /* Convert a 16-bit number between little and big endian */
181     static forced_inline m_uint16_t swap16(m_uint16_t value)
182     {
183     return((value >> 8) | ((value & 0xFF) << 8));
184     }
185    
186     /* Convert a 32-bit number between little and big endian */
187     static forced_inline m_uint32_t swap32(m_uint32_t value)
188     {
189     m_uint32_t result;
190    
191     result = value >> 24;
192     result |= ((value >> 16) & 0xff) << 8;
193     result |= ((value >> 8) & 0xff) << 16;
194     result |= (value & 0xff) << 24;
195     return(result);
196     }
197    
198     /* Convert a 64-bit number between little and big endian */
199     static forced_inline m_uint64_t swap64(m_uint64_t value)
200     {
201     m_uint64_t result;
202    
203     result = (m_uint64_t)swap32(value & 0xffffffff) << 32;
204     result |= swap32(value >> 32);
205     return(result);
206     }
207    
208     /* Get current time in number of msec since epoch */
209     static inline m_tmcnt_t m_gettime(void)
210     {
211     struct timeval tvp;
212    
213     gettimeofday(&tvp,NULL);
214     return(((m_tmcnt_t)tvp.tv_sec * 1000) + ((m_tmcnt_t)tvp.tv_usec / 1000));
215     }
216    
217     /* Get current time in number of usec since epoch */
218     static inline m_tmcnt_t m_gettime_usec(void)
219     {
220     struct timeval tvp;
221    
222     gettimeofday(&tvp,NULL);
223     return(((m_tmcnt_t)tvp.tv_sec * 1000000) + (m_tmcnt_t)tvp.tv_usec);
224     }
225    
226 dpavlin 3 #ifdef __CYGWIN__
227     #define GET_TIMEZONE _timezone
228     #else
229     #define GET_TIMEZONE timezone
230     #endif
231    
232     /* Get current time in number of ms (localtime) */
233     static inline m_tmcnt_t m_gettime_adj(void)
234     {
235     struct timeval tvp;
236     struct tm tmx;
237     time_t gmt_adjust;
238     time_t ct;
239    
240     gettimeofday(&tvp,NULL);
241     ct = tvp.tv_sec;
242     localtime_r(&ct,&tmx);
243    
244     #if defined(__CYGWIN__) || defined(SUNOS)
245     gmt_adjust = -(tmx.tm_isdst ? GET_TIMEZONE - 3600 : GET_TIMEZONE);
246     #else
247     gmt_adjust = tmx.tm_gmtoff;
248     #endif
249    
250     tvp.tv_sec += gmt_adjust;
251     return(((m_tmcnt_t)tvp.tv_sec * 1000) + ((m_tmcnt_t)tvp.tv_usec / 1000));
252     }
253    
254 dpavlin 1 /* Add an element to a list */
255     m_list_t *m_list_add(m_list_t **head,void *data);
256    
257     /* Dynamic sprintf */
258     char *dyn_sprintf(const char *fmt,...);
259    
260     /* Split a string */
261     int m_strsplit(char *str,char delim,char **array,int max_count);
262    
263     /* Tokenize a string */
264     int m_strtok(char *str,char delim,char **array,int max_count);
265    
266     /* Quote a string */
267     char *m_strquote(char *buffer,size_t buf_len,char *str);
268    
269     /* Ugly function that dumps a structure in hexa and ascii. */
270     void mem_dump(FILE *f_output,u_char *pkt,u_int len);
271    
272     /* Logging function */
273     void m_flog(FILE *fd,char *module,char *fmt,va_list ap);
274    
275     /* Logging function */
276     void m_log(char *module,char *fmt,...);
277    
278     /* Returns a line from specified file (remove trailing '\n') */
279     char *m_fgets(char *buffer,int size,FILE *fd);
280    
281     /* Read a file and returns it in a buffer */
282     ssize_t m_read_file(char *filename,char **buffer);
283    
284     /* Allocate aligned memory */
285     void *m_memalign(size_t boundary,size_t size);
286    
287 dpavlin 3 /* Block specified signal for calling thread */
288     int m_signal_block(int sig);
289    
290     /* Unblock specified signal for calling thread */
291     int m_signal_unblock(int sig);
292    
293     /* Set non-blocking mode on a file descriptor */
294     int m_fd_set_non_block(int fd);
295    
296 dpavlin 4 /* Map a memory zone from a file */
297     u_char *memzone_map_file(int fd,size_t len);
298    
299     /* Map a memory zone from a file, with copy-on-write (COW) */
300     u_char *memzone_map_cow_file(int fd,size_t len);
301    
302     /* Create a file to serve as a memory zone */
303     int memzone_create_file(char *filename,size_t len,u_char **ptr);
304    
305     /* Open a file to serve as a COW memory zone */
306     int memzone_open_cow_file(char *filename,size_t len,u_char **ptr);
307    
308     /* Open a file and map it in memory */
309     int memzone_open_file(char *filename,u_char **ptr,off_t *fsize);
310    
311     /* Compute NVRAM checksum */
312     m_uint16_t nvram_cksum(m_uint16_t *ptr,size_t count);
313    
314 dpavlin 1 #endif

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