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lib/libkvm/kvm_private.h

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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE. * SUCH DAMAGE.
* *
* @(#)kvm_private.h 8.1 (Berkeley) 6/4/93 * @(#)kvm_private.h 8.1 (Berkeley) 6/4/93
* $FreeBSD$ * $FreeBSD$
*/ */
#include <sys/endian.h>
#include <sys/linker_set.h>
#include <gelf.h>
struct kvm_arch {
int (*ka_probe)(kvm_t *);
int (*ka_initvtop)(kvm_t *);
void (*ka_freevtop)(kvm_t *);
int (*ka_kvatop)(kvm_t *, kvaddr_t, off_t *);
int (*ka_native)(kvm_t *);
};
#define KVM_ARCH(ka) DATA_SET(kvm_arch, ka)
struct __kvm { struct __kvm {
struct kvm_arch *arch;
/* /*
* a string to be prepended to error messages * a string to be prepended to error messages
* provided for compatibility with sun's interface * provided for compatibility with sun's interface
* if this value is null, errors are saved in errbuf[] * if this value is null, errors are saved in errbuf[]
*/ */
const char *program; const char *program;
char *errp; /* XXX this can probably go away */ char *errp; /* XXX this can probably go away */
char errbuf[_POSIX2_LINE_MAX]; char errbuf[_POSIX2_LINE_MAX];
#define ISALIVE(kd) ((kd)->vmfd >= 0) #define ISALIVE(kd) ((kd)->vmfd >= 0)
int pmfd; /* physical memory file (or crashdump) */ int pmfd; /* physical memory file (or crashdump) */
int vmfd; /* virtual memory file (-1 if crashdump) */ int vmfd; /* virtual memory file (-1 if crashdump) */
int unused; /* was: swap file (e.g., /dev/drum) */
int nlfd; /* namelist file (e.g., /kernel) */ int nlfd; /* namelist file (e.g., /kernel) */
GElf_Ehdr nlehdr; /* ELF file header for namelist file */
int (*resolve_symbol)(const char *, kvaddr_t *);
struct kinfo_proc *procbase; struct kinfo_proc *procbase;
char *argspc; /* (dynamic) storage for argv strings */ char *argspc; /* (dynamic) storage for argv strings */
int arglen; /* length of the above */ int arglen; /* length of the above */
char **argv; /* (dynamic) storage for argv pointers */ char **argv; /* (dynamic) storage for argv pointers */
int argc; /* length of above (not actual # present) */ int argc; /* length of above (not actual # present) */
char *argbuf; /* (dynamic) temporary storage */ char *argbuf; /* (dynamic) temporary storage */
/* /*
* Kernel virtual address translation state. This only gets filled * Kernel virtual address translation state. This only gets filled
* in for dead kernels; otherwise, the running kernel (i.e. kmem) * in for dead kernels; otherwise, the running kernel (i.e. kmem)
* will do the translations for us. It could be big, so we * will do the translations for us. It could be big, so we
* only allocate it if necessary. * only allocate it if necessary.
*/ */
struct vmstate *vmst; struct vmstate *vmst;
int rawdump; /* raw dump format */ int rawdump; /* raw dump format */
int vnet_initialized; /* vnet fields set up */ int vnet_initialized; /* vnet fields set up */
uintptr_t vnet_start; /* start of kernel's vnet region */ kvaddr_t vnet_start; /* start of kernel's vnet region */
uintptr_t vnet_stop; /* stop of kernel's vnet region */ kvaddr_t vnet_stop; /* stop of kernel's vnet region */
uintptr_t vnet_current; /* vnet we're working with */ kvaddr_t vnet_current; /* vnet we're working with */
uintptr_t vnet_base; /* vnet base of current vnet */ kvaddr_t vnet_base; /* vnet base of current vnet */
/* /*
* Dynamic per-CPU kernel memory. We translate symbols, on-demand, * Dynamic per-CPU kernel memory. We translate symbols, on-demand,
* to the data associated with dpcpu_curcpu, set with * to the data associated with dpcpu_curcpu, set with
* kvm_dpcpu_setcpu(). * kvm_dpcpu_setcpu().
*/ */
int dpcpu_initialized; /* dpcpu fields set up */ int dpcpu_initialized; /* dpcpu fields set up */
uintptr_t dpcpu_start; /* start of kernel's dpcpu region */ kvaddr_t dpcpu_start; /* start of kernel's dpcpu region */
uintptr_t dpcpu_stop; /* stop of kernel's dpcpu region */ kvaddr_t dpcpu_stop; /* stop of kernel's dpcpu region */
u_int dpcpu_maxcpus; /* size of base array */ u_int dpcpu_maxcpus; /* size of base array */
uintptr_t *dpcpu_off; /* base array, indexed by CPU ID */ uintptr_t *dpcpu_off; /* base array, indexed by CPU ID */
u_int dpcpu_curcpu; /* CPU we're currently working with */ u_int dpcpu_curcpu; /* CPU we're currently working with */
uintptr_t dpcpu_curoff; /* dpcpu base of current CPU */ kvaddr_t dpcpu_curoff; /* dpcpu base of current CPU */
}; };
/* /*
* Page table hash used by minidump backends to map physical addresses
* to file offsets.
*/
struct hpte {
struct hpte *next;
uint64_t pa;
off_t off;
};
#define HPT_SIZE 1024
struct hpt {
struct hpte *hpt_head[HPT_SIZE];
};
/*
* Functions used internally by kvm, but across kvm modules. * Functions used internally by kvm, but across kvm modules.
*/ */
static inline uint32_t
_kvm32toh(kvm_t *kd, uint32_t val)
{
if (kd->nlehdr.e_ident[EI_DATA] == ELFDATA2LSB)
return (le32toh(val));
else
return (be32toh(val));
}
static inline uint64_t
_kvm64toh(kvm_t *kd, uint64_t val)
{
if (kd->nlehdr.e_ident[EI_DATA] == ELFDATA2LSB)
return (le64toh(val));
else
return (be64toh(val));
}
void _kvm_err(kvm_t *kd, const char *program, const char *fmt, ...) void _kvm_err(kvm_t *kd, const char *program, const char *fmt, ...)
__printflike(3, 4); __printflike(3, 4);
void _kvm_freeprocs(kvm_t *kd); void _kvm_freeprocs(kvm_t *kd);
void _kvm_freevtop(kvm_t *);
int _kvm_initvtop(kvm_t *);
int _kvm_kvatop(kvm_t *, u_long, off_t *);
void *_kvm_malloc(kvm_t *kd, size_t); void *_kvm_malloc(kvm_t *kd, size_t);
int _kvm_nlist(kvm_t *, struct nlist *, int); int _kvm_nlist(kvm_t *, struct kvm_nlist *, int);
void *_kvm_realloc(kvm_t *kd, void *, size_t); void *_kvm_realloc(kvm_t *kd, void *, size_t);
void _kvm_syserr (kvm_t *kd, const char *program, const char *fmt, ...) void _kvm_syserr (kvm_t *kd, const char *program, const char *fmt, ...)
__printflike(3, 4); __printflike(3, 4);
int _kvm_uvatop(kvm_t *, const struct proc *, u_long, u_long *);
int _kvm_vnet_selectpid(kvm_t *, pid_t); int _kvm_vnet_selectpid(kvm_t *, pid_t);
int _kvm_vnet_initialized(kvm_t *, int); int _kvm_vnet_initialized(kvm_t *, int);
uintptr_t _kvm_vnet_validaddr(kvm_t *, uintptr_t); kvaddr_t _kvm_vnet_validaddr(kvm_t *, kvaddr_t);
int _kvm_dpcpu_initialized(kvm_t *, int); int _kvm_dpcpu_initialized(kvm_t *, int);
uintptr_t _kvm_dpcpu_validaddr(kvm_t *, uintptr_t); kvaddr_t _kvm_dpcpu_validaddr(kvm_t *, kvaddr_t);
int _kvm_probe_elf_kernel(kvm_t *, int, int);
#if defined(__aarch64__) || defined(__amd64__) || defined(__arm__) || \ int _kvm_is_minidump(kvm_t *);
defined(__i386__) || defined(__mips__) int _kvm_read_core_phdrs(kvm_t *, size_t *, GElf_Phdr **);
void _kvm_minidump_freevtop(kvm_t *); void _kvm_hpt_init(kvm_t *, struct hpt *, void *, size_t, off_t, int, int);
int _kvm_minidump_initvtop(kvm_t *); off_t _kvm_hpt_find(struct hpt *, uint64_t);
int _kvm_minidump_kvatop(kvm_t *, u_long, off_t *); void _kvm_hpt_free(struct hpt *);
#endif