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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [scripts/] [mkdep.c] - Blame information for rev 1765

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#include <stdio.h>
#include <stdlib.h>
 
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/fcntl.h>
#include <sys/mman.h>
 
char *filename, *command, __depname[256] = "\n\t@touch ";
int needsconfig, hasconfig, hasdep;
int filelen;
 
#define depname (__depname+9)
 
struct path_struct {
        int len;
        char buffer[256-sizeof(int)];
} path_array[2] = {
/*      { 23, "/usr/src/linux/include/" },
*/
        { 35, "/home/simons/uClinux/linux/include/" },
        {  0, "" }
};
 
static void handle_include(int type, char *name, int len)
{
        int plen;
        struct path_struct *path = path_array+type;
 
        if (len == 14 && !memcmp(name, "linux/config.h", len))
                hasconfig = 1;
 
        plen = path->len;
        memcpy(path->buffer+plen, name, len);
        len += plen;
        path->buffer[len] = '\0';
        if (access(path->buffer, F_OK))
                return;
 
        if (!hasdep) {
                hasdep = 1;
                printf("%s:", depname);
        }
        printf(" \\\n   %s", path->buffer);
}
 
static void handle_config(void)
{
        needsconfig = 1;
        if (!hasconfig)
                fprintf(stderr,
                        "%s needs config but has not included config file\n",
                        filename);
}
 
#if defined(__alpha__) || defined(__i386__) || defined(__arm__)
#define LE_MACHINE
#endif
 
#ifdef LE_MACHINE
#define next_byte(x) (x >>= 8)
#define current ((unsigned char) __buf)
#else
#define next_byte(x) (x <<= 8)
#define current (__buf >> 8*(sizeof(unsigned long)-1))
#endif
 
#define GETNEXT { \
next_byte(__buf); \
if (!__nrbuf) { \
        __buf = *(unsigned long *) next; \
        __nrbuf = sizeof(unsigned long); \
        if (!__buf) \
                break; \
} if(!(--filelen))break;next++; __nrbuf--; }
 
#define CASE(c,label) if (current == c) goto label
#define NOTCASE(c,label) if (current != c) goto label
 
static void state_machine(register char *next)
{
        for(;;) {
 
        register unsigned long __buf = 0;
        register unsigned long __nrbuf = 0;
 
normal:
        GETNEXT
__normal:
        CASE('/',slash);
        CASE('"',string);
        CASE('\'',char_const);
        CASE('#',preproc);
        goto normal;
 
slash:
        GETNEXT
        CASE('*',comment);
        goto __normal;
 
string:
        GETNEXT
        CASE('"',normal);
        NOTCASE('\\',string);
        GETNEXT
        goto string;
 
char_const:
        GETNEXT
        CASE('\'',normal);
        NOTCASE('\\',char_const);
        GETNEXT
        goto char_const;
 
comment:
        GETNEXT
__comment:
        NOTCASE('*',comment);
        GETNEXT
        CASE('/',normal);
        goto __comment;
 
preproc:
        GETNEXT
        CASE('\n',normal);
        CASE(' ',preproc);
        CASE('\t',preproc);
        CASE('i',i_preproc);
        GETNEXT
 
skippreproc:
        CASE('\n',normal);
        CASE('\\',skippreprocslash);
        GETNEXT
        goto skippreproc;
 
skippreprocslash:
        GETNEXT;
        GETNEXT;
        goto skippreproc;
 
i_preproc:
        GETNEXT
        CASE('f',if_line);
        NOTCASE('n',skippreproc);
        GETNEXT
        NOTCASE('c',skippreproc);
        GETNEXT
        NOTCASE('l',skippreproc);
        GETNEXT
        NOTCASE('u',skippreproc);
        GETNEXT
        NOTCASE('d',skippreproc);
        GETNEXT
        NOTCASE('e',skippreproc);
 
/* "# include" found */
include_line:
        GETNEXT
        CASE('\n',normal);
        CASE('<', std_include_file);
        NOTCASE('"', include_line);
 
/* "local" include file */
{
        char *incname = next;
local_include_name:
        GETNEXT
        CASE('\n',normal);
        NOTCASE('"', local_include_name);
        handle_include(1, incname, next-incname-1);
        goto skippreproc;
}
 
/* <std> include file */
std_include_file:
{
        char *incname = next;
std_include_name:
        GETNEXT
        CASE('\n',normal);
        NOTCASE('>', std_include_name);
        handle_include(0, incname, next-incname-1);
        goto skippreproc;
}
 
if_line:
        if (needsconfig)
                goto skippreproc;
if_start:
        GETNEXT
        CASE('C', config);
        CASE('\n', normal);
        CASE('_', if_middle);
        if (current >= 'a' && current <= 'z')
                goto if_middle;
        if (current < 'A' || current > 'Z')
                goto if_start;
config:
        GETNEXT
        NOTCASE('O', __if_middle);
        GETNEXT
        NOTCASE('N', __if_middle);
        GETNEXT
        NOTCASE('F', __if_middle);
        GETNEXT
        NOTCASE('I', __if_middle);
        GETNEXT
        NOTCASE('G', __if_middle);
        GETNEXT
        NOTCASE('_', __if_middle);
        handle_config();
        goto skippreproc;
 
if_middle:
        GETNEXT
__if_middle:
        CASE('\n', normal);
        CASE('_', if_middle);
        if (current >= 'a' && current <= 'z')
                goto if_middle;
        if (current < 'A' || current > 'Z')
                goto if_start;
        goto if_middle;
        }
}
 
static void do_depend(void)
{
        char *map;
        int mapsize;
        int pagesizem1 = getpagesize()-1;
        int fd = open(filename, O_RDONLY);
        struct stat st;
 
        if (fd < 0) {
                perror("mkdep: open");
                return;
        }
        fstat(fd, &st);
/* SIMON */
        filelen = st.st_size;
        if (0 == (long)st.st_size) {
                perror("mkdep: file empty");
                close(fd);
                return;
        }
        mapsize = st.st_size + 2*sizeof(unsigned long);
        mapsize = (mapsize+pagesizem1) & ~pagesizem1;
        map = mmap(NULL, mapsize, PROT_READ, MAP_PRIVATE, fd, 0);
        if (-1 == (long)map) {
                perror("mkdep: mmap");
                close(fd);
                return;
        }
        close(fd);
        state_machine(map);
        munmap(map, mapsize);
        if (hasdep)
                puts(command);
}
 
int main(int argc, char **argv)
{
        int len;
        char * hpath;
 
        hpath = getenv("HPATH");
        if (!hpath)
                hpath = "/home/simons/uClinux/linux/include/";
        len = strlen(hpath);
        memcpy(path_array[0].buffer, hpath, len);
        if (len && hpath[len-1] != '/') {
                path_array[0].buffer[len] = '/';
                len++;
        }
        path_array[0].buffer[len] = '\0';
        path_array[0].len = len;
 
        while (--argc > 0) {
                int len;
                char *name = *++argv;
                filename = name;
                len = strlen(name);
                memcpy(depname, name, len+1);
                command = __depname;
                if (len > 2 && name[len-2] == '.') {
                        switch (name[len-1]) {
                                case 'c':
                                case 'S':
                                        depname[len-1] = 'o';
                                        command = "";
                        }
                }
                needsconfig = hasconfig = hasdep = 0;
                do_depend();
                if (hasconfig && !needsconfig)
                        fprintf(stderr, "%s doesn't need config\n", filename);
        }
        return 0;
}

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[/] [or1k/] [trunk/] [rc203soc/] [sw/] [uClinux/] [scripts/] [mkdep.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	1629	jcastillo	`#include <stdio.h>`
2			`#include <stdlib.h>`
3
4			`#include <string.h>`
5			`#include <sys/types.h>`
6			`#include <sys/stat.h>`
7			`#include <unistd.h>`
8			`#include <sys/fcntl.h>`
9			`#include <sys/mman.h>`
10
11			`char filename, command, __depname[256] = "\n\t@touch ";`
12			`int needsconfig, hasconfig, hasdep;`
13			`int filelen;`
14
15			`#define depname (__depname+9)`
16
17			`struct path_struct {`
18			`int len;`
19			`char buffer[256-sizeof(int)];`
20			`} path_array[2] = {`
21			`/* { 23, "/usr/src/linux/include/" },`
22			`*/`
23			`{ 35, "/home/simons/uClinux/linux/include/" },`
24			`{ 0, "" }`
25			`};`
26
27			`static void handle_include(int type, char *name, int len)`
28			`{`
29			`int plen;`
30			`struct path_struct *path = path_array+type;`
31
32			`if (len == 14 && !memcmp(name, "linux/config.h", len))`
33			`hasconfig = 1;`
34
35			`plen = path->len;`
36			`memcpy(path->buffer+plen, name, len);`
37			`len += plen;`
38			`path->buffer[len] = '\0';`
39			`if (access(path->buffer, F_OK))`
40			`return;`
41
42			`if (!hasdep) {`
43			`hasdep = 1;`
44			`printf("%s:", depname);`
45			`}`
46			`printf(" \\\n %s", path->buffer);`
47			`}`
48
49			`static void handle_config(void)`
50			`{`
51			`needsconfig = 1;`
52			`if (!hasconfig)`
53			`fprintf(stderr,`
54			`"%s needs config but has not included config file\n",`
55			`filename);`
56			`}`
57
58			`#if defined(__alpha__) \|\| defined(__i386__) \|\| defined(__arm__)`
59			`#define LE_MACHINE`
60			`#endif`
61
62			`#ifdef LE_MACHINE`
63			`#define next_byte(x) (x >>= 8)`
64			`#define current ((unsigned char) __buf)`
65			`#else`
66			`#define next_byte(x) (x <<= 8)`
67			`#define current (__buf >> 8*(sizeof(unsigned long)-1))`
68			`#endif`
69
70			`#define GETNEXT { \`
71			`next_byte(__buf); \`
72			`if (!__nrbuf) { \`
73			`__buf = (unsigned long ) next; \`
74			`__nrbuf = sizeof(unsigned long); \`
75			`if (!__buf) \`
76			`break; \`
77			`} if(!(--filelen))break;next++; __nrbuf--; }`
78
79			`#define CASE(c,label) if (current == c) goto label`
80			`#define NOTCASE(c,label) if (current != c) goto label`
81
82			`static void state_machine(register char *next)`
83			`{`
84			`for(;;) {`
85
86			`register unsigned long __buf = 0;`
87			`register unsigned long __nrbuf = 0;`
88
89			`normal:`
90			`GETNEXT`
91			`__normal:`
92			`CASE('/',slash);`
93			`CASE('"',string);`
94			`CASE('\'',char_const);`
95			`CASE('#',preproc);`
96			`goto normal;`
97
98			`slash:`
99			`GETNEXT`
100			`CASE('*',comment);`
101			`goto __normal;`
102
103			`string:`
104			`GETNEXT`
105			`CASE('"',normal);`
106			`NOTCASE('\\',string);`
107			`GETNEXT`
108			`goto string;`
109
110			`char_const:`
111			`GETNEXT`
112			`CASE('\'',normal);`
113			`NOTCASE('\\',char_const);`
114			`GETNEXT`
115			`goto char_const;`
116
117			`comment:`
118			`GETNEXT`
119			`__comment:`
120			`NOTCASE('*',comment);`
121			`GETNEXT`
122			`CASE('/',normal);`
123			`goto __comment;`
124
125			`preproc:`
126			`GETNEXT`
127			`CASE('\n',normal);`
128			`CASE(' ',preproc);`
129			`CASE('\t',preproc);`
130			`CASE('i',i_preproc);`
131			`GETNEXT`
132
133			`skippreproc:`
134			`CASE('\n',normal);`
135			`CASE('\\',skippreprocslash);`
136			`GETNEXT`
137			`goto skippreproc;`
138
139			`skippreprocslash:`
140			`GETNEXT;`
141			`GETNEXT;`
142			`goto skippreproc;`
143
144			`i_preproc:`
145			`GETNEXT`
146			`CASE('f',if_line);`
147			`NOTCASE('n',skippreproc);`
148			`GETNEXT`
149			`NOTCASE('c',skippreproc);`
150			`GETNEXT`
151			`NOTCASE('l',skippreproc);`
152			`GETNEXT`
153			`NOTCASE('u',skippreproc);`
154			`GETNEXT`
155			`NOTCASE('d',skippreproc);`
156			`GETNEXT`
157			`NOTCASE('e',skippreproc);`
158
159			`/* "# include" found */`
160			`include_line:`
161			`GETNEXT`
162			`CASE('\n',normal);`
163			`CASE('<', std_include_file);`
164			`NOTCASE('"', include_line);`
165
166			`/* "local" include file */`
167			`{`
168			`char *incname = next;`
169			`local_include_name:`
170			`GETNEXT`
171			`CASE('\n',normal);`
172			`NOTCASE('"', local_include_name);`
173			`handle_include(1, incname, next-incname-1);`
174			`goto skippreproc;`
175			`}`
176
177			`/* <std> include file */`
178			`std_include_file:`
179			`{`
180			`char *incname = next;`
181			`std_include_name:`
182			`GETNEXT`
183			`CASE('\n',normal);`
184			`NOTCASE('>', std_include_name);`
185			`handle_include(0, incname, next-incname-1);`
186			`goto skippreproc;`
187			`}`
188
189			`if_line:`
190			`if (needsconfig)`
191			`goto skippreproc;`
192			`if_start:`
193			`GETNEXT`
194			`CASE('C', config);`
195			`CASE('\n', normal);`
196			`CASE('_', if_middle);`
197			`if (current >= 'a' && current <= 'z')`
198			`goto if_middle;`
199			`if (current < 'A' \|\| current > 'Z')`
200			`goto if_start;`
201			`config:`
202			`GETNEXT`
203			`NOTCASE('O', __if_middle);`
204			`GETNEXT`
205			`NOTCASE('N', __if_middle);`
206			`GETNEXT`
207			`NOTCASE('F', __if_middle);`
208			`GETNEXT`
209			`NOTCASE('I', __if_middle);`
210			`GETNEXT`
211			`NOTCASE('G', __if_middle);`
212			`GETNEXT`
213			`NOTCASE('_', __if_middle);`
214			`handle_config();`
215			`goto skippreproc;`
216
217			`if_middle:`
218			`GETNEXT`
219			`__if_middle:`
220			`CASE('\n', normal);`
221			`CASE('_', if_middle);`
222			`if (current >= 'a' && current <= 'z')`
223			`goto if_middle;`
224			`if (current < 'A' \|\| current > 'Z')`
225			`goto if_start;`
226			`goto if_middle;`
227			`}`
228			`}`
229
230			`static void do_depend(void)`
231			`{`
232			`char *map;`
233			`int mapsize;`
234			`int pagesizem1 = getpagesize()-1;`
235			`int fd = open(filename, O_RDONLY);`
236			`struct stat st;`
237
238			`if (fd < 0) {`
239			`perror("mkdep: open");`
240			`return;`
241			`}`
242			`fstat(fd, &st);`
243			`/* SIMON */`
244			`filelen = st.st_size;`
245			`if (0 == (long)st.st_size) {`
246			`perror("mkdep: file empty");`
247			`close(fd);`
248			`return;`
249			`}`
250			`mapsize = st.st_size + 2*sizeof(unsigned long);`
251			`mapsize = (mapsize+pagesizem1) & ~pagesizem1;`
252			`map = mmap(NULL, mapsize, PROT_READ, MAP_PRIVATE, fd, 0);`
253			`if (-1 == (long)map) {`
254			`perror("mkdep: mmap");`
255			`close(fd);`
256			`return;`
257			`}`
258			`close(fd);`
259			`state_machine(map);`
260			`munmap(map, mapsize);`
261			`if (hasdep)`
262			`puts(command);`
263			`}`
264
265			`int main(int argc, char **argv)`
266			`{`
267			`int len;`
268			`char * hpath;`
269
270			`hpath = getenv("HPATH");`
271			`if (!hpath)`
272			`hpath = "/home/simons/uClinux/linux/include/";`
273			`len = strlen(hpath);`
274			`memcpy(path_array[0].buffer, hpath, len);`
275			`if (len && hpath[len-1] != '/') {`
276			`path_array[0].buffer[len] = '/';`
277			`len++;`
278			`}`
279			`path_array[0].buffer[len] = '\0';`
280			`path_array[0].len = len;`
281
282			`while (--argc > 0) {`
283			`int len;`
284			`char name = ++argv;`
285			`filename = name;`
286			`len = strlen(name);`
287			`memcpy(depname, name, len+1);`
288			`command = __depname;`
289			`if (len > 2 && name[len-2] == '.') {`
290			`switch (name[len-1]) {`
291			`case 'c':`
292			`case 'S':`
293			`depname[len-1] = 'o';`
294			`command = "";`
295			`}`
296			`}`
297			`needsconfig = hasconfig = hasdep = 0;`
298			`do_depend();`
299			`if (hasconfig && !needsconfig)`
300			`fprintf(stderr, "%s doesn't need config\n", filename);`
301			`}`
302			`return 0;`
303			`}`