1 /* 2 * Dump memory 3 */ 4 5 #include <stdio.h> 6 #include <string.h> 7 #include <stdlib.h> 8 #include <sys/cpu.h> 9 #include "sysdump.h" 10 11 static char *lowmem; 12 static size_t lowmem_len; 13 14 void *zero_addr; /* Hack to keep gcc from complaining */ 15 16 void snapshot_lowmem(void) 17 { 18 extern void _start(void); 19 20 lowmem_len = (size_t)_start; 21 lowmem = malloc(lowmem_len); 22 if (lowmem) { 23 printf("Snapshotting lowmem... "); 24 cli(); 25 memcpy(lowmem, zero_addr, lowmem_len); 26 sti(); 27 printf("ok\n"); 28 } 29 } 30 31 static void dump_memory_range(struct upload_backend *be, const void *where, 32 const void *addr, size_t len) 33 { 34 char filename[32]; 35 36 sprintf(filename, "memory/%08zx", (size_t)addr); 37 cpio_writefile(be, filename, where, len); 38 } 39 40 void dump_memory(struct upload_backend *be) 41 { 42 printf("Dumping memory... "); 43 44 cpio_mkdir(be, "memory"); 45 46 if (lowmem) 47 dump_memory_range(be, lowmem, zero_addr, lowmem_len); 48 49 printf("done.\n"); 50 } 51
