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/*
* Dump memory
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/cpu.h>
#include "sysdump.h"
#include "backend.h"
static char *lowmem;
static size_t lowmem_len;
void *zero_addr; /* Hack to keep gcc from complaining */
void snapshot_lowmem(void)
{
extern void _start(void);
lowmem_len = (size_t)_start;
lowmem = malloc(lowmem_len);
if (lowmem) {
printf("Snapshotting lowmem... ");
cli();
memcpy(lowmem, zero_addr, lowmem_len);
sti();
printf("ok\n");
}
}
static void dump_memory_range(struct backend *be, const void *where,
const void *addr, size_t len)
{
char filename[32];
sprintf(filename, "memory/%08zx", (size_t)addr);
cpio_writefile(be, filename, where, len);
}
void dump_memory(struct backend *be)
{
printf("Dumping memory... ");
cpio_mkdir(be, "memory");
if (lowmem)
dump_memory_range(be, lowmem, zero_addr, lowmem_len);
printf("done.\n");
}
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