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Lines 1202-1235
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| 1202 |
} |
1202 |
} |
| 1203 |
#endif /* ! STAGE1_5 */ |
1203 |
#endif /* ! STAGE1_5 */ |
| 1204 |
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1204 |
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1205 |
#ifdef GRUB_UTIL |
| 1206 |
# ifdef __PIC__ |
| 1207 |
# if defined(HAVE_START_SYMBOL) && defined(HAVE_END_SYMBOL) |
| 1208 |
extern char start[]; |
| 1209 |
extern char end[]; |
| 1210 |
# elif defined(HAVE_USCORE_START_SYMBOL) && defined (HAVE_USCORE_END_SYMBOL) |
| 1211 |
extern char _start[]; |
| 1212 |
extern char _end[]; |
| 1213 |
# endif |
| 1214 |
# endif |
| 1215 |
#endif |
| 1205 |
int |
1216 |
int |
| 1206 |
memcheck (int addr, int len) |
1217 |
memcheck (int addr, int len) |
| 1207 |
{ |
1218 |
{ |
| 1208 |
#ifdef GRUB_UTIL |
1219 |
#ifdef GRUB_UTIL |
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|
1220 |
# ifdef __PIC__ |
| 1221 |
# if defined(HAVE_START_SYMBOL) && defined(HAVE_END_SYMBOL) |
| 1222 |
if (start <= addr && end > addr + len) |
| 1223 |
return ! errnum; |
| 1224 |
# elif defined(HAVE_USCORE_START_SYMBOL) && defined (HAVE_USCORE_END_SYMBOL) |
| 1225 |
if (_start <= addr && _end > addr + len) |
| 1226 |
return ! errnum; |
| 1227 |
# endif |
| 1228 |
# else /* __PIC__ */ |
| 1209 |
static int start_addr (void) |
1229 |
static int start_addr (void) |
| 1210 |
{ |
1230 |
{ |
| 1211 |
int ret; |
1231 |
int ret; |
| 1212 |
# if defined(HAVE_START_SYMBOL) |
1232 |
# if defined(HAVE_START_SYMBOL) |
| 1213 |
asm volatile ("movl $start, %0" : "=a" (ret)); |
1233 |
asm volatile ("movl $start, %0" : "=a" (ret)); |
| 1214 |
# elif defined(HAVE_USCORE_START_SYMBOL) |
1234 |
# elif defined(HAVE_USCORE_START_SYMBOL) |
| 1215 |
asm volatile ("movl $_start, %0" : "=a" (ret)); |
1235 |
asm volatile ("movl $_start, %0" : "=a" (ret)); |
| 1216 |
# endif |
1236 |
# else |
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|
1237 |
erk! /* function would return undefined data in this case - barf */ |
| 1238 |
# endif |
| 1217 |
return ret; |
1239 |
return ret; |
| 1218 |
} |
1240 |
} |
| 1219 |
|
1241 |
|
| 1220 |
static int end_addr (void) |
1242 |
static int end_addr (void) |
| 1221 |
{ |
1243 |
{ |
| 1222 |
int ret; |
1244 |
int ret; |
| 1223 |
# if defined(HAVE_END_SYMBOL) |
1245 |
# if defined(HAVE_END_SYMBOL) |
| 1224 |
asm volatile ("movl $end, %0" : "=a" (ret)); |
1246 |
asm volatile ("movl $end, %0" : "=a" (ret)); |
| 1225 |
# elif defined(HAVE_USCORE_END_SYMBOL) |
1247 |
# elif defined(HAVE_USCORE_END_SYMBOL) |
| 1226 |
asm volatile ("movl $_end, %0" : "=a" (ret)); |
1248 |
asm volatile ("movl $_end, %0" : "=a" (ret)); |
| 1227 |
# endif |
1249 |
# else |
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|
1250 |
erk! /* function would return undefined data in this case - barf */ |
| 1251 |
# endif |
| 1228 |
return ret; |
1252 |
return ret; |
| 1229 |
} |
1253 |
} |
| 1230 |
|
1254 |
|
| 1231 |
if (start_addr () <= addr && end_addr () > addr + len) |
1255 |
if (start_addr () <= addr && end_addr () > addr + len) |
| 1232 |
return ! errnum; |
1256 |
return ! errnum; |
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|
1257 |
# endif /* __PIC__ */ |
| 1233 |
#endif /* GRUB_UTIL */ |
1258 |
#endif /* GRUB_UTIL */ |
| 1234 |
|
1259 |
|
| 1235 |
if ((addr < RAW_ADDR (0x1000)) |
1260 |
if ((addr < RAW_ADDR (0x1000)) |
