const mdb_modinfo_t *
_mdb_init(void)
{
uint_t d = 0, kd = 0, w = 0, kw = 0;
const mdb_walker_t *wp;
const mdb_dcmd_t *dp;
for (dp = common_dcmds; dp->dc_name != NULL; dp++)
d++; /* count common dcmds */
for (wp = common_walkers; wp->walk_name != NULL; wp++)
w++; /* count common walkers */
#ifdef _KERNEL
for (dp = kernel_dcmds; dp->dc_name != NULL; dp++)
kd++; /* count kernel dcmds */
for (wp = kernel_walkers; wp->walk_name != NULL; wp++)
kw++; /* count common walkers */
#endif
modinfo.mi_dcmds = mdb_zalloc(sizeof (*dp) * (d + kd + 1), UM_SLEEP);
modinfo.mi_walkers = mdb_zalloc(sizeof (*wp) * (w + kw + 1), UM_SLEEP);
bcopy(common_dcmds, (void *)modinfo.mi_dcmds, sizeof (*dp) * d);
bcopy(common_walkers, (void *)modinfo.mi_walkers, sizeof (*wp) * w);
#ifdef _KERNEL
bcopy(kernel_dcmds, (void *)
(modinfo.mi_dcmds + d), sizeof (*dp) * kd);
bcopy(kernel_walkers, (void *)
(modinfo.mi_walkers + w), sizeof (*wp) * kw);
#endif
return (&modinfo);
}
static int
hash_walk_init(mdb_walk_state_t *wsp, uintptr_t addr, uint_t hashlen,
const char *name, size_t size, size_t next)
{
hashwalk_data_t *hwp;
size_t len = sizeof (uintptr_t) * hashlen;
if (len == 0) {
mdb_warn("failed to walk hash: invalid hash length\n");
return (WALK_ERR);
}
hwp = mdb_alloc(sizeof (hashwalk_data_t), UM_SLEEP);
hwp->hw_hash = mdb_zalloc(len, UM_SLEEP);
(void) mdb_vread(hwp->hw_hash, len, addr);
hwp->hw_hashlen = hashlen;
hwp->hw_hashidx = 0;
hwp->hw_name = name;
hwp->hw_data = mdb_zalloc(size, UM_SLEEP);
hwp->hw_size = size;
hwp->hw_next = next;
wsp->walk_addr = hwp->hw_hash[0];
wsp->walk_data = hwp;
return (WALK_NEXT);
}
mdb_io_t *
kmdb_promio_create(char *name)
{
mdb_io_t *io;
pio_data_t *pdp;
ihandle_t hdl = kmdb_prom_get_handle(name);
if (hdl == -1)
return (NULL);
io = mdb_zalloc(sizeof (mdb_io_t), UM_SLEEP);
pdp = mdb_zalloc(sizeof (pio_data_t), UM_SLEEP);
(void) strlcpy(pdp->pio_name, name, MAXPATHLEN);
pdp->pio_fd = hdl;
#ifdef __sparc
pdp->pio_ti.c_oflag |= ONLCR;
pdp->pio_ti.c_iflag |= ICRNL;
#endif
pdp->pio_ti.c_lflag |= ECHO;
io->io_data = pdp;
io->io_ops = &promio_ops;
return (io);
}
/* allocate memory, initilize hash table and LRU queue */
static void
vn_htable_init(vn_htable_t *hp, size_t vn_size)
{
int i;
int htable_size = MAX(vn_size, VN_LARGE);
if ((hp->vn_htable_buf = mdb_zalloc(sizeof (struct vn_htable_list)
* htable_size, UM_NOSLEEP|UM_GC)) == NULL) {
htable_size = VN_SMALL;
hp->vn_htable_buf = mdb_zalloc(sizeof (struct vn_htable_list)
* htable_size, UM_SLEEP|UM_GC);
}
hp->vn_htable = mdb_zalloc(sizeof (struct vn_htable_list *)
* htable_size, UM_SLEEP|UM_GC);
hp->vn_q_first = &hp->vn_htable_buf[0];
hp->vn_q_last = &hp->vn_htable_buf[htable_size - 1];
hp->vn_q_first->vn_q_next = &hp->vn_htable_buf[1];
hp->vn_q_last->vn_q_prev = &hp->vn_htable_buf[htable_size - 2];
for (i = 1; i < (htable_size-1); i++) {
hp->vn_htable_buf[i].vn_q_next = &hp->vn_htable_buf[i + 1];
hp->vn_htable_buf[i].vn_q_prev = &hp->vn_htable_buf[i - 1];
}
hp->vn_htable_size = htable_size;
hp->vn_htable_buckets = htable_size;
}
/*
* Sends a request to the driver to load the module. If/when the load has
* completed successfully, kmdb_module_loaded is called.
*/
int
mdb_module_load(const char *fname, int mode)
{
const char *modname = strbasename(fname);
kmdb_wr_load_t *dlr;
kmdb_modctl_t *kmc = NULL;
const char *wformat = NULL;
mdb_var_t *v;
if (!mdb_module_validate_name(modname, &wformat))
goto module_load_err;
if ((v = mdb_nv_lookup(&mdb.m_dmodctl, modname)) != NULL) {
kmc = MDB_NV_COOKIE(v);
if (kmc->kmc_state == KMDB_MC_STATE_LOADING)
wformat = "module %s is already being loaded\n";
else
wformat = "module %s is being unloaded\n";
goto module_load_err;
}
kmc = mdb_zalloc(sizeof (kmdb_modctl_t), UM_SLEEP);
kmc->kmc_loadmode = mode;
kmc->kmc_modname = strdup(modname);
kmc->kmc_state = KMDB_MC_STATE_LOADING;
if (mdb_nv_insert(&mdb.m_dmodctl, modname, NULL, (uintptr_t)kmc, 0) ==
NULL) {
wformat = "module %s can't be registered for load\n";
kmc_free(kmc);
goto module_load_err;
}
dlr = mdb_zalloc(sizeof (kmdb_wr_load_t), UM_SLEEP);
dlr->dlr_node.wn_task = WNTASK_DMOD_LOAD;
dlr->dlr_fname = strdup(fname);
kmdb_wr_driver_notify(dlr);
if (!(mode & MDB_MOD_DEFER) &&
mdb_tgt_continue(mdb.m_target, NULL) == 0)
return (0);
if (!(mode & MDB_MOD_SILENT))
mdb_printf("%s load pending (:c to complete)\n", modname);
return (0);
module_load_err:
if (!(mode & MDB_MOD_SILENT))
warn(wformat, modname);
return (-1);
}
unsigned char *read_section_names(int fd, Elf32_Ehdr *h)
{
int offset;
Elf32_Shdr section;
unsigned char *buffer= NULL;
offset = h->e_shoff + h->e_shentsize * h->e_shstrndx;
lseek(fd, offset, SEEK_SET);
read(fd, §ion, sizeof(Elf32_Shdr));
buffer = (unsigned char *)mdb_zalloc(section.sh_size, UM_SLEEP);
if (buffer == NULL) {
printf("Unable to allocate memory for data size=%d\n", section.sh_size);
return NULL;
}
lseek(fd, section.sh_offset, SEEK_SET);
/* printf("address of buffer is =%p reading string table of size = %d\n", buffer,
section.sh_size);a
*/
if (read(fd, buffer, section.sh_size) != section.sh_size) {
printf("Error reading string table\n");
free(buffer);
return NULL;
}
return buffer;
}
/*
* Given a V8 ScopeInfo in "addr", load it into "sip". This will validate
* basic properties of the ScopeInfo. "memflags" are used for memory
* allocation.
*
* Returns 0 on success and -1 on failure. On failure, the specifed scope info
* must not be used for anything.
*/
v8scopeinfo_t *
v8scopeinfo_load(uintptr_t addr, int memflags)
{
v8scopeinfo_t *sip;
if ((sip = mdb_zalloc(sizeof (*sip), memflags)) == NULL) {
return (NULL);
}
sip->v8si_addr = addr;
if (read_heap_array(addr,
&sip->v8si_elts, &sip->v8si_nelts, memflags) != 0) {
goto err;
}
if (sip->v8si_nelts < V8_SCOPEINFO_IDX_FIRST_VARS) {
v8_warn("array too short to be a ScopeInfo\n");
goto err;
}
if (!V8_IS_SMI(sip->v8si_elts[V8_SCOPEINFO_IDX_NPARAMS]) ||
!V8_IS_SMI(sip->v8si_elts[V8_SCOPEINFO_IDX_NSTACKLOCALS]) ||
!V8_IS_SMI(sip->v8si_elts[V8_SCOPEINFO_IDX_NCONTEXTLOCALS])) {
v8_warn("static ScopeInfo fields do not look like SMIs\n");
goto err;
}
return (sip);
err:
maybefree(sip, sizeof (*sip), memflags);
return (NULL);
}
/*
* Given a V8 Context in "addr", load it into "ctxp". This will validate basic
* properties of the context. "memflags" are used for memory allocation.
* Returns a context on success and NULL on failure.
*/
v8context_t *
v8context_load(uintptr_t addr, int memflags)
{
v8context_t *ctxp;
if ((ctxp = mdb_zalloc(sizeof (*ctxp), memflags)) == NULL) {
return (NULL);
}
ctxp->v8ctx_addr = addr;
if (read_heap_array(addr, &ctxp->v8ctx_elts,
&ctxp->v8ctx_nelts, memflags) != 0) {
goto err;
}
if (ctxp->v8ctx_nelts < V8_CONTEXT_NCOMMON) {
v8_warn("%p: context array is too short\n", addr);
goto err;
}
return (ctxp);
err:
maybefree(ctxp, sizeof (*ctxp), memflags);
return (NULL);
}
static int
sv_dev_winit(mdb_walk_state_t *wsp)
{
struct sv_dev_winfo *winfo;
sv_dev_t *sv_devs;
int sv_max_devices;
winfo = mdb_zalloc(sizeof (struct sv_dev_winfo), UM_SLEEP);
if (mdb_readvar(&sv_devs, "sv_devs") == -1) {
mdb_warn("failed to read 'sv_devs'");
mdb_free(winfo, sizeof (struct sv_dev_winfo));
return (WALK_ERR);
}
if (mdb_readvar(&sv_max_devices, "sv_max_devices") == -1) {
mdb_warn("failed to read 'sv_max_devices'");
mdb_free(winfo, sizeof (struct sv_dev_winfo));
return (WALK_ERR);
}
winfo->start = (uintptr_t)sv_devs;
winfo->end = (uintptr_t)(sv_devs + sv_max_devices);
if (wsp->walk_addr == NULL)
wsp->walk_addr = winfo->start;
wsp->walk_data = winfo;
return (WALK_NEXT);
}
void
print_scsi_devid_desc(uintptr_t addr, uint16_t len, char *spacer)
{
scsi_devid_desc_t *id;
if (len < sizeof (*id)) {
mdb_warn("%sError: Devid Size = %d < sizeof(scsi_devid_desc_t)"
"\n", spacer, len);
return;
}
id = mdb_zalloc(len, UM_SLEEP);
if (mdb_vread(id, len, addr) == -1) {
mdb_warn("failed to read scsi_devid_desc at %p\n", addr);
mdb_free(id, len);
return;
}
mdb_printf("%sTotal length:\t%d\n", spacer, len);
mdb_printf("%sProtocol:\t%d => %-16s\n", spacer, id->protocol_id,
(id->protocol_id < ARRAY_SIZE(stmf_protocol_str)) ?
stmf_protocol_str[id->protocol_id] : "");
mdb_printf("%sCode Set:\t%d\n", spacer, id->code_set);
mdb_printf("%sIdent Length:\t%d\n", spacer, id->ident_length);
if (len < sizeof (*id) + id->ident_length - 1) {
mdb_printf("%s(Can not recognize ident data)\n", spacer);
} else {
id->ident[id->ident_length] = '\0';
mdb_printf("%sIdent:\t\t%s\n", spacer, id->ident);
}
mdb_free(id, len);
mdb_printf("\n");
}
mdb_vcb_t *
mdb_vcb_create(mdb_var_t *v)
{
mdb_vcb_t *vcb = mdb_zalloc(sizeof (mdb_vcb_t), UM_SLEEP);
vcb->vc_var = v;
return (vcb);
}
/*
* Decipher and print transport id which is pointed by addr variable.
*/
static int
print_transport_id(uintptr_t addr, uint16_t tpd_len, char *spacer)
{
scsi_transport_id_t *tpd;
if (tpd_len < sizeof (*tpd)) {
mdb_warn("%sError: Transport ID Size = %d < "
"sizeof (scsi_transport_id_t)\n", spacer, tpd_len);
return (DCMD_ERR);
}
tpd = mdb_zalloc(tpd_len, UM_SLEEP);
if (mdb_vread(tpd, tpd_len, addr) == -1) {
mdb_warn("failed to read scsi_transport_id at %p\n", addr);
mdb_free(tpd, tpd_len);
return (DCMD_ERR);
}
mdb_printf("%sTotal length:\t%d\n", spacer, tpd_len);
mdb_printf("%sProtocol:\t%d => %16s\n", spacer, tpd->protocol_id,
(tpd->protocol_id < ARRAY_SIZE(stmf_protocol_str)) ?
stmf_protocol_str[tpd->protocol_id] : "");
mdb_printf("%sFormat Code:\t0x%x\n", spacer, tpd->format_code);
switch (tpd->protocol_id) {
case PROTOCOL_FIBRE_CHANNEL:
{
uint8_t *p = ((scsi_fc_transport_id_t *)tpd)->port_name;
mdb_printf("%sFC Port Name:\t%016llX\n", spacer,
nhconvert_8bytes(p));
}
break;
case PROTOCOL_PARALLEL_SCSI:
case PROTOCOL_SSA:
case PROTOCOL_IEEE_1394:
break;
case PROTOCOL_SRP:
{
uint8_t *p = ((scsi_srp_transport_id_t *)tpd)->srp_name;
/* Print 8 byte initiator extention and guid in order */
mdb_printf("%sSRP Name:\t%016llX:%016llX\n", spacer,
nhconvert_8bytes(&p[8]), nhconvert_8bytes(&p[0]));
}
break;
case PROTOCOL_iSCSI:
mdb_printf("%sISCSI Name:\t%s\n", spacer,
((iscsi_transport_id_t *)tpd)->iscsi_name);
break;
case PROTOCOL_SAS:
case PROTOCOL_ADT:
case PROTOCOL_ATAPI:
default:
break;
}
mdb_free(tpd, tpd_len);
return (DCMD_OK);
}
mdb_tab_cookie_t *
mdb_tab_init(void)
{
mdb_tab_cookie_t *mcp;
mcp = mdb_zalloc(sizeof (mdb_tab_cookie_t), UM_SLEEP | UM_GC);
(void) mdb_nv_create(&mcp->mtc_nv, UM_SLEEP | UM_GC);
return (mcp);
}
void
cyclic_pretty_dump(cyc_cpu_t *cpu)
{
char **c;
int i, j;
int width = 80;
int depth;
cyc_index_t *heap;
size_t hsize = sizeof (cyc_index_t) * cpu->cyp_size;
heap = mdb_alloc(hsize, UM_SLEEP | UM_GC);
if (mdb_vread(heap, hsize, (uintptr_t)cpu->cyp_heap) == -1) {
mdb_warn("couldn't read heap at %p", (uintptr_t)cpu->cyp_heap);
return;
}
for (depth = 0; (1 << depth) < cpu->cyp_nelems; depth++)
continue;
depth++;
depth = (depth + 1) * LINES_PER_LEVEL;
c = mdb_zalloc(sizeof (char *) * depth, UM_SLEEP|UM_GC);
for (i = 0; i < depth; i++)
c[i] = mdb_zalloc(width, UM_SLEEP|UM_GC);
cyclic_dump_node(cpu, heap, c, width, 0, 1, width - 2, 0);
for (i = 0; i < depth; i++) {
int dump = 0;
for (j = 0; j < width - 1; j++) {
if (c[i][j] == '\0')
c[i][j] = ' ';
else
dump = 1;
}
c[i][width - 2] = '\n';
if (dump)
mdb_printf(c[i]);
}
}
static int
sv_hash_winit(mdb_walk_state_t *wsp)
{
if (wsp->walk_addr == NULL)
return (WALK_ERR);
wsp->walk_data = mdb_zalloc(sizeof (sv_dev_t), UM_SLEEP);
return (WALK_NEXT);
}
/*ARGSUSED*/
static int
x86_featureset_cmd(uintptr_t addr, uint_t flags, int argc,
const mdb_arg_t *argv)
{
void *fset;
GElf_Sym sym;
uintptr_t nptr;
char name[128];
int ii;
size_t sz = sizeof (uchar_t) * BT_SIZEOFMAP(NUM_X86_FEATURES);
if (argc != 0)
return (DCMD_USAGE);
if (mdb_lookup_by_name("x86_feature_names", &sym) == -1) {
mdb_warn("couldn't find x86_feature_names");
return (DCMD_ERR);
}
fset = mdb_zalloc(sz, UM_NOSLEEP);
if (fset == NULL) {
mdb_warn("failed to allocate memory for x86_featureset");
return (DCMD_ERR);
}
if (mdb_readvar(fset, "x86_featureset") != sz) {
mdb_warn("failed to read x86_featureset");
mdb_free(fset, sz);
return (DCMD_ERR);
}
for (ii = 0; ii < NUM_X86_FEATURES; ii++) {
if (!BT_TEST((ulong_t *)fset, ii))
continue;
if (mdb_vread(&nptr, sizeof (char *), sym.st_value +
sizeof (void *) * ii) != sizeof (char *)) {
mdb_warn("failed to read feature array %d", ii);
mdb_free(fset, sz);
return (DCMD_ERR);
}
if (mdb_readstr(name, sizeof (name), nptr) == -1) {
mdb_warn("failed to read feature %d", ii);
mdb_free(fset, sz);
return (DCMD_ERR);
}
mdb_printf("%s\n", name);
}
mdb_free(fset, sz);
return (DCMD_OK);
}
static kp_file_t *
kp_file_create(mdb_tgt_t *t, kp_map_t *kpm, GElf_Half etype)
{
kp_file_t *kpf = mdb_zalloc(sizeof (kp_file_t), UM_SLEEP);
kp_data_t *kp = t->t_data;
size_t dyns_sz;
void *dyns;
kpf->kpf_fio = kp_io_create(t, kpm);
kpf->kpf_map = kpm;
kpf->kpf_basename = strbasename(kpm->kpm_map.map_name);
kpf->kpf_file = mdb_gelf_create(kpf->kpf_fio, etype, GF_PROGRAM);
kpf->kpf_text_base = kpm->kpm_map.map_base;
if (kpm != kp->kp_map_exec)
kpf->kpf_dyn_base = kpf->kpf_text_base;
if (kpf->kpf_file == NULL)
goto err; /* Failed to create ELF file */
mdb_dprintf(MDB_DBG_TGT, "loading symbols for %s\n",
kpm->kpm_map.map_name);
if ((kp->kp_rap != NULL) && (rd_get_dyns(kp->kp_rap,
kpf->kpf_text_base, &dyns, &dyns_sz) == RD_OK))
mdb_gelf_dyns_set(kpf->kpf_file, dyns, dyns_sz);
kpf->kpf_dynsym = mdb_gelf_symtab_create_dynamic(kpf->kpf_file,
MDB_TGT_DYNSYM);
if (kpf->kpf_dynsym == NULL)
goto err; /* Failed to create symbol table */
kpm->kpm_file = kpf;
if (kp->kp_file_tail != NULL)
kp->kp_file_tail->kpf_next = kpf;
else
kp->kp_file_head = kpf;
kp->kp_file_tail = kpf;
kp->kp_num_files++;
return (kpf);
err:
if (kpf->kpf_file != NULL)
mdb_gelf_destroy(kpf->kpf_file);
else
mdb_io_destroy(kpf->kpf_fio);
mdb_free(kpf, sizeof (kp_file_t));
return (NULL);
}
void
mdb_module_load_all(int mode)
{
kmdb_wr_t *wn;
ASSERT(mode & MDB_MOD_DEFER);
wn = mdb_zalloc(sizeof (kmdb_wr_t), UM_SLEEP);
wn->wn_task = WNTASK_DMOD_LOAD_ALL;
kmdb_wr_driver_notify(wn);
}
/*ARGSUSED*/
int
stacks_thread_cb(uintptr_t addr, const void *ignored, void *cbarg)
{
stacks_info_t *sip = cbarg;
findstack_info_t *fsip = &sip->si_fsi;
stacks_entry_t **sepp, *nsep, *sep;
int idx;
size_t depth;
if (stacks_findstack(addr, fsip, 0) != DCMD_OK &&
fsip->fsi_failed == FSI_FAIL_BADTHREAD) {
mdb_warn("couldn't read thread at %p\n", addr);
return (WALK_NEXT);
}
sip->si_count++;
depth = fsip->fsi_depth;
nsep = mdb_zalloc(STACKS_ENTRY_SIZE(depth), UM_SLEEP);
nsep->se_thread = addr;
nsep->se_sp = fsip->fsi_sp;
nsep->se_sobj_ops = fsip->fsi_sobj_ops;
nsep->se_tstate = fsip->fsi_tstate;
nsep->se_count = 1;
nsep->se_overflow = fsip->fsi_overflow;
nsep->se_depth = depth;
nsep->se_failed = fsip->fsi_failed;
nsep->se_panic = fsip->fsi_panic;
for (idx = 0; idx < depth; idx++)
nsep->se_stack[idx] = fsip->fsi_stack[idx];
for (sepp = &sip->si_hash[stacks_hash_entry(nsep)];
(sep = *sepp) != NULL;
sepp = &sep->se_next) {
if (stacks_entry_comp_impl(sep, nsep, 0) != 0)
continue;
nsep->se_dup = sep->se_dup;
sep->se_dup = nsep;
sep->se_count++;
return (WALK_NEXT);
}
nsep->se_next = NULL;
*sepp = nsep;
sip->si_entries++;
return (WALK_NEXT);
}
static int
sv_gclient_winit(mdb_walk_state_t *wsp)
{
if (wsp->walk_addr == NULL &&
mdb_readvar(&wsp->walk_addr, "sv_gclients") == -1) {
mdb_warn("unable to read 'sv_gclients'");
return (WALK_ERR);
}
wsp->walk_data = mdb_zalloc(sizeof (sv_gclient_t), UM_SLEEP);
return (WALK_NEXT);
}
int
ttrace_walk_init(mdb_walk_state_t *wsp)
{
trap_trace_ctl_t *ttcp;
size_t ttc_size = sizeof (trap_trace_ctl_t) * NCPU;
int i;
if (!ttrace_ttr_size_check())
return (WALK_ERR);
ttcp = mdb_zalloc(ttc_size, UM_SLEEP);
if (wsp->walk_addr != NULL) {
mdb_warn("ttrace only supports global walks\n");
return (WALK_ERR);
}
if (mdb_readsym(ttcp, ttc_size, "trap_trace_ctl") == -1) {
mdb_warn("symbol 'trap_trace_ctl' not found; "
"non-TRAPTRACE kernel?\n");
mdb_free(ttcp, ttc_size);
return (WALK_ERR);
}
/*
* We'll poach the ttc_current pointer (which isn't used for
* anything) to store a pointer to our current TRAPTRACE record.
* This allows us to only keep the array of trap_trace_ctl structures
* as our walker state (ttc_current may be the only kernel data
* structure member added exclusively to make writing the mdb walker
* a little easier).
*/
for (i = 0; i < NCPU; i++) {
trap_trace_ctl_t *ttc = &ttcp[i];
if (ttc->ttc_first == NULL)
continue;
/*
* Assign ttc_current to be the last completed record.
* Note that the error checking (i.e. in the ttc_next ==
* ttc_first case) is performed in the step function.
*/
ttc->ttc_current = ttc->ttc_next - sizeof (trap_trace_rec_t);
}
wsp->walk_data = ttcp;
return (WALK_NEXT);
}
mdb_context_t *
mdb_context_create(int (*func)(void))
{
mdb_context_t *c = mdb_zalloc(sizeof (mdb_context_t), UM_NOSLEEP);
size_t pagesize = sysconf(_SC_PAGESIZE);
int prot = sysconf(_SC_STACK_PROT);
static int zfd = -1;
if (c == NULL)
return (NULL);
if (prot == -1)
prot = PROT_READ | PROT_WRITE | PROT_EXEC;
c->ctx_func = func;
c->ctx_stacksize = pagesize * 4;
c->ctx_stack = mmap(NULL, c->ctx_stacksize, prot,
MAP_PRIVATE | MAP_ANON, -1, 0);
/*
* If the mmap failed with EBADFD, this kernel doesn't have MAP_ANON
* support; fall back to opening /dev/zero, caching the fd, and using
* that to mmap chunks of anonymous memory.
*/
if (c->ctx_stack == MAP_FAILED && errno == EBADF) {
if (zfd == -1 && (zfd = open("/dev/zero", O_RDWR)) >= 0)
(void) fcntl(zfd, F_SETFD, FD_CLOEXEC);
if (zfd >= 0) {
c->ctx_stack = mmap(NULL, c->ctx_stacksize, prot,
MAP_PRIVATE, zfd, 0);
}
}
c->ctx_uc.uc_flags = UC_ALL;
if (c->ctx_stack == MAP_FAILED || getcontext(&c->ctx_uc) != 0) {
mdb_free(c, sizeof (mdb_context_t));
return (NULL);
}
c->ctx_uc.uc_stack.ss_sp = c->ctx_stack;
c->ctx_uc.uc_stack.ss_size = c->ctx_stacksize;
c->ctx_uc.uc_stack.ss_flags = 0;
c->ctx_uc.uc_link = NULL;
makecontext(&c->ctx_uc, context_init, 1, c);
return (c);
}
static void
kp_add_mapping(const mdb_map_t *pmp, void *data)
{
kp_map_t *kpm = mdb_zalloc(sizeof (kp_map_t), UM_SLEEP);
kp_data_t *kp = data;
bcopy(pmp, &kpm->kpm_map, sizeof (mdb_map_t));
if (kp->kp_map_tail != NULL)
kp->kp_map_tail->kpm_next = kpm;
else
kp->kp_map_head = kpm;
kp->kp_map_tail = kpm;
kp->kp_num_maps++;
}
static int
kaif_init(kmdb_auxv_t *kav)
{
/* Allocate the per-CPU save areas */
kaif_cpusave = mdb_zalloc(sizeof (kaif_cpusave_t) * kav->kav_ncpu,
UM_SLEEP);
kaif_ncpusave = kav->kav_ncpu;
kaif_modchg_cb = NULL;
kaif_waptmap = 0;
kaif_trap_switch = (kav->kav_flags & KMDB_AUXV_FL_NOTRPSWTCH) == 0;
return (0);
}
int
cyctrace_walk_init(mdb_walk_state_t *wsp)
{
cyc_cpu_t *cpu;
int i;
cpu = mdb_zalloc(sizeof (cyc_cpu_t), UM_SLEEP);
if (wsp->walk_addr == NULL) {
/*
* If an address isn't provided, we'll use the passive buffer.
*/
GElf_Sym sym;
cyc_tracebuf_t *tr = &cpu->cyp_trace[0];
uintptr_t addr;
if (mdb_lookup_by_name("cyc_ptrace", &sym) == -1) {
mdb_warn("couldn't find passive buffer");
return (-1);
}
addr = (uintptr_t)sym.st_value;
if (mdb_vread(tr, sizeof (cyc_tracebuf_t), addr) == -1) {
mdb_warn("couldn't read passive buffer");
return (-1);
}
wsp->walk_addr = addr - offsetof(cyc_cpu_t, cyp_trace[0]);
} else {
if (mdb_vread(cpu, sizeof (cyc_cpu_t), wsp->walk_addr) == -1) {
mdb_warn("couldn't read cyc_cpu at %p", wsp->walk_addr);
mdb_free(cpu, sizeof (cyc_cpu_t));
return (-1);
}
}
for (i = 0; i < CY_LEVELS; i++) {
if (cpu->cyp_trace[i].cyt_ndx-- == 0)
cpu->cyp_trace[i].cyt_ndx = CY_NTRACEREC - 1;
}
wsp->walk_data = cpu;
return (0);
}
static int
sv_maj_winit(mdb_walk_state_t *wsp)
{
if (wsp->walk_addr == NULL) {
if (mdb_readvar(&sv_majors, "sv_majors") == -1) {
mdb_warn("failed to read 'sv_majors'");
return (WALK_ERR);
}
} else {
sv_majors[0] = (sv_maj_t *)wsp->walk_addr;
}
wsp->walk_addr = (uintptr_t)&sv_majors[0];
wsp->walk_data = mdb_zalloc(sizeof (sv_maj_t), UM_SLEEP);
return (WALK_NEXT);
}
/*
* read mmu parameters from kernel
*/
static void
init_mmu(void)
{
struct as kas;
if (mmu.num_level != 0)
return;
if (mdb_readsym(&mmu, sizeof (mmu), "mmu") == -1)
mdb_warn("Can't use HAT information before mmu_init()\n");
if (mdb_readsym(&kas, sizeof (kas), "kas") == -1)
mdb_warn("Couldn't find kas - kernel's struct as\n");
if (mdb_readsym(&kernelbase, sizeof (kernelbase), "kernelbase") == -1)
mdb_warn("Couldn't find kernelbase\n");
khat = kas.a_hat;
/*
* Is this a paravirtualized domain image?
*/
if (mdb_readsym(&mfn_list_addr, sizeof (mfn_list_addr),
"mfn_list") == -1 ||
mdb_readsym(&xen_virt_start, sizeof (xen_virt_start),
"xen_virt_start") == -1 ||
mdb_readsym(&mfn_count, sizeof (mfn_count), "mfn_count") == -1) {
mfn_list_addr = NULL;
}
is_xpv = mfn_list_addr != NULL;
#ifndef _KMDB
/*
* recreate the local mfn_list
*/
if (is_xpv) {
size_t sz = mfn_count * sizeof (pfn_t);
mfn_list = mdb_zalloc(sz, UM_SLEEP);
if (mdb_vread(mfn_list, sz, (uintptr_t)mfn_list_addr) == -1) {
mdb_warn("Failed to read MFN list\n");
mdb_free(mfn_list, sz);
mfn_list = NULL;
}
}
#endif
}
const char *
mdb_one_bit(int width, int bit, int on)
{
int i, j = 0;
char *buf;
buf = mdb_zalloc(width + (width / NBNB) + 2, UM_GC | UM_SLEEP);
for (i = --width; i > bit; i--)
SETBIT(buf, j, '.');
SETBIT(buf, j, on ? '1' : '0');
for (i = bit - 1; i >= 0; i--)
SETBIT(buf, j, '.');
return (buf);
}
const char *
mdb_inval_bits(int width, int start, int stop)
{
int i, j = 0;
char *buf;
buf = mdb_zalloc(width + (width / NBNB) + 2, UM_GC | UM_SLEEP);
for (i = --width; i > stop; i--)
SETBIT(buf, j, '.');
for (i = stop; i >= start; i--)
SETBIT(buf, j, 'x');
for (; i >= 0; i--)
SETBIT(buf, j, '.');
return (buf);
}
static void
kmdb_module_request_unload(kmdb_modctl_t *kmc, const char *modname, int mode)
{
kmdb_wr_unload_t *dur = mdb_zalloc(sizeof (kmdb_wr_unload_t), UM_SLEEP);
dur->dur_node.wn_task = WNTASK_DMOD_UNLOAD;
dur->dur_modname = strdup(modname);
dur->dur_modctl = kmc->kmc_modctl;
kmdb_wr_driver_notify(dur);
kmc->kmc_state = KMDB_MC_STATE_UNLOADING;
if (!(mode & MDB_MOD_DEFER) &&
mdb_tgt_continue(mdb.m_target, NULL) == 0)
return;
if (!(mode & MDB_MOD_SILENT))
mdb_printf("%s unload pending (:c to complete)\n", modname);
}