static int
count_types(ctf_header_t *h, caddr_t data)
{
caddr_t dptr = data + h->cth_typeoff;
int count = 0;
dptr = data + h->cth_typeoff;
while (dptr < data + h->cth_stroff) {
void *v = (void *) dptr;
ctf_type_t *ctt = v;
size_t vlen = CTF_INFO_VLEN(ctt->ctt_info);
size_t size, increment;
get_ctt_size(ctt, &size, &increment);
switch (CTF_INFO_KIND(ctt->ctt_info)) {
case CTF_K_INTEGER:
case CTF_K_FLOAT:
dptr += 4;
break;
case CTF_K_POINTER:
case CTF_K_FORWARD:
case CTF_K_TYPEDEF:
case CTF_K_VOLATILE:
case CTF_K_CONST:
case CTF_K_RESTRICT:
case CTF_K_FUNCTION:
dptr += sizeof (ushort_t) * (vlen + (vlen & 1));
break;
case CTF_K_ARRAY:
dptr += sizeof (ctf_array_t);
break;
case CTF_K_STRUCT:
case CTF_K_UNION:
if (size < CTF_LSTRUCT_THRESH)
dptr += sizeof (ctf_member_t) * vlen;
else
dptr += sizeof (ctf_lmember_t) * vlen;
break;
case CTF_K_ENUM:
dptr += sizeof (ctf_enum_t) * vlen;
break;
case CTF_K_UNKNOWN:
break;
default:
parseterminate("Unknown CTF type %d (#%d) at %#x",
CTF_INFO_KIND(ctt->ctt_info), count, dptr - data);
}
dptr += increment;
count++;
}
debug(3, "CTF read %d types\n", count);
return (count);
}
int
ctf_add_enumerator(ctf_file_t *fp, ctf_id_t enid, const char *name, int value)
{
ctf_dtdef_t *dtd = ctf_dtd_lookup(fp, enid);
ctf_dmdef_t *dmd;
uint_t kind, vlen, root;
char *s;
if (name == NULL)
return (ctf_set_errno(fp, EINVAL));
if (!(fp->ctf_flags & LCTF_RDWR))
return (ctf_set_errno(fp, ECTF_RDONLY));
if (dtd == NULL)
return (ctf_set_errno(fp, ECTF_BADID));
kind = CTF_INFO_KIND(dtd->dtd_data.ctt_info);
root = CTF_INFO_ISROOT(dtd->dtd_data.ctt_info);
vlen = CTF_INFO_VLEN(dtd->dtd_data.ctt_info);
if (kind != CTF_K_ENUM)
return (ctf_set_errno(fp, ECTF_NOTENUM));
if (vlen == CTF_MAX_VLEN)
return (ctf_set_errno(fp, ECTF_DTFULL));
for (dmd = ctf_list_next(&dtd->dtd_u.dtu_members);
dmd != NULL; dmd = ctf_list_next(dmd)) {
if (strcmp(dmd->dmd_name, name) == 0)
return (ctf_set_errno(fp, ECTF_DUPMEMBER));
}
if ((dmd = ctf_alloc(sizeof (ctf_dmdef_t))) == NULL)
return (ctf_set_errno(fp, EAGAIN));
if ((s = ctf_strdup(name)) == NULL) {
ctf_free(dmd, sizeof (ctf_dmdef_t));
return (ctf_set_errno(fp, EAGAIN));
}
dmd->dmd_name = s;
dmd->dmd_type = CTF_ERR;
dmd->dmd_offset = 0;
dmd->dmd_value = value;
dtd->dtd_data.ctt_info = CTF_TYPE_INFO(kind, root, vlen + 1);
ctf_list_append(&dtd->dtd_u.dtu_members, dmd);
fp->ctf_dtstrlen += strlen(s) + 1;
fp->ctf_flags |= LCTF_DIRTY;
return (0);
}
void
ctf_dtd_delete(ctf_file_t *fp, ctf_dtdef_t *dtd)
{
ulong_t h = dtd->dtd_type & (fp->ctf_dthashlen - 1);
ctf_dtdef_t *p, **q = &fp->ctf_dthash[h];
ctf_dmdef_t *dmd, *nmd;
size_t len;
for (p = *q; p != NULL; p = p->dtd_hash) {
if (p != dtd)
q = &p->dtd_hash;
else
break;
}
if (p != NULL)
*q = p->dtd_hash;
switch (CTF_INFO_KIND(dtd->dtd_data.ctt_info)) {
case CTF_K_STRUCT:
case CTF_K_UNION:
case CTF_K_ENUM:
for (dmd = ctf_list_next(&dtd->dtd_u.dtu_members);
dmd != NULL; dmd = nmd) {
if (dmd->dmd_name != NULL) {
len = strlen(dmd->dmd_name) + 1;
ctf_free(dmd->dmd_name, len);
fp->ctf_dtstrlen -= len;
}
nmd = ctf_list_next(dmd);
ctf_free(dmd, sizeof (ctf_dmdef_t));
}
break;
case CTF_K_FUNCTION:
ctf_free(dtd->dtd_u.dtu_argv, sizeof (ctf_id_t) *
CTF_INFO_VLEN(dtd->dtd_data.ctt_info));
break;
}
if (dtd->dtd_name) {
len = strlen(dtd->dtd_name) + 1;
ctf_free(dtd->dtd_name, len);
fp->ctf_dtstrlen -= len;
}
ctf_list_delete(&fp->ctf_dtdefs, dtd);
ctf_free(dtd, sizeof (ctf_dtdef_t));
}
static ushort_t
get_vlen_v2(ushort_t info)
{
return (CTF_INFO_VLEN(info));
}
static int
fbt_typoff_init(linker_ctf_t *lc)
{
const ctf_header_t *hp = (const ctf_header_t *) lc->ctftab;
const ctf_type_t *tbuf;
const ctf_type_t *tend;
const ctf_type_t *tp;
const uint8_t *ctfdata = lc->ctftab + sizeof(ctf_header_t);
int ctf_typemax = 0;
uint32_t *xp;
ulong_t pop[CTF_K_MAX + 1] = { 0 };
/* Sanity check. */
if (hp->cth_magic != CTF_MAGIC)
return (EINVAL);
tbuf = (const ctf_type_t *) (ctfdata + hp->cth_typeoff);
tend = (const ctf_type_t *) (ctfdata + hp->cth_stroff);
int child = hp->cth_parname != 0;
/*
* We make two passes through the entire type section. In this first
* pass, we count the number of each type and the total number of types.
*/
for (tp = tbuf; tp < tend; ctf_typemax++) {
ushort_t kind = CTF_INFO_KIND(tp->ctt_info);
ulong_t vlen = CTF_INFO_VLEN(tp->ctt_info);
ssize_t size, increment;
size_t vbytes;
uint_t n;
(void) fbt_get_ctt_size(hp->cth_version, tp, &size, &increment);
switch (kind) {
case CTF_K_INTEGER:
case CTF_K_FLOAT:
vbytes = sizeof (uint_t);
break;
case CTF_K_ARRAY:
vbytes = sizeof (ctf_array_t);
break;
case CTF_K_FUNCTION:
vbytes = sizeof (ushort_t) * (vlen + (vlen & 1));
break;
case CTF_K_STRUCT:
case CTF_K_UNION:
if (size < CTF_LSTRUCT_THRESH) {
ctf_member_t *mp = (ctf_member_t *)
((uintptr_t)tp + increment);
vbytes = sizeof (ctf_member_t) * vlen;
for (n = vlen; n != 0; n--, mp++)
child |= CTF_TYPE_ISCHILD(mp->ctm_type);
} else {
ctf_lmember_t *lmp = (ctf_lmember_t *)
((uintptr_t)tp + increment);
vbytes = sizeof (ctf_lmember_t) * vlen;
for (n = vlen; n != 0; n--, lmp++)
child |=
CTF_TYPE_ISCHILD(lmp->ctlm_type);
}
break;
case CTF_K_ENUM:
vbytes = sizeof (ctf_enum_t) * vlen;
break;
case CTF_K_FORWARD:
/*
* For forward declarations, ctt_type is the CTF_K_*
* kind for the tag, so bump that population count too.
* If ctt_type is unknown, treat the tag as a struct.
*/
if (tp->ctt_type == CTF_K_UNKNOWN ||
tp->ctt_type >= CTF_K_MAX)
pop[CTF_K_STRUCT]++;
else
pop[tp->ctt_type]++;
/*FALLTHRU*/
case CTF_K_UNKNOWN:
vbytes = 0;
break;
case CTF_K_POINTER:
case CTF_K_TYPEDEF:
case CTF_K_VOLATILE:
case CTF_K_CONST:
case CTF_K_RESTRICT:
child |= CTF_TYPE_ISCHILD(tp->ctt_type);
vbytes = 0;
break;
default:
printf("%s(%d): detected invalid CTF kind -- %u\n", __func__, __LINE__, kind);
return (EIO);
}
tp = (ctf_type_t *)((uintptr_t)tp + increment + vbytes);
pop[kind]++;
}
*lc->typlenp = ctf_typemax;
if ((xp = malloc(sizeof(uint32_t) * ctf_typemax, M_LINKER, M_ZERO | M_WAITOK)) == NULL)
return (ENOMEM);
*lc->typoffp = xp;
/* type id 0 is used as a sentinel value */
*xp++ = 0;
/*
* In the second pass, fill in the type offset.
*/
for (tp = tbuf; tp < tend; xp++) {
ushort_t kind = CTF_INFO_KIND(tp->ctt_info);
ulong_t vlen = CTF_INFO_VLEN(tp->ctt_info);
ssize_t size, increment;
size_t vbytes;
uint_t n;
(void) fbt_get_ctt_size(hp->cth_version, tp, &size, &increment);
switch (kind) {
case CTF_K_INTEGER:
case CTF_K_FLOAT:
vbytes = sizeof (uint_t);
break;
case CTF_K_ARRAY:
vbytes = sizeof (ctf_array_t);
break;
case CTF_K_FUNCTION:
vbytes = sizeof (ushort_t) * (vlen + (vlen & 1));
break;
case CTF_K_STRUCT:
case CTF_K_UNION:
if (size < CTF_LSTRUCT_THRESH) {
ctf_member_t *mp = (ctf_member_t *)
((uintptr_t)tp + increment);
vbytes = sizeof (ctf_member_t) * vlen;
for (n = vlen; n != 0; n--, mp++)
child |= CTF_TYPE_ISCHILD(mp->ctm_type);
} else {
ctf_lmember_t *lmp = (ctf_lmember_t *)
((uintptr_t)tp + increment);
vbytes = sizeof (ctf_lmember_t) * vlen;
for (n = vlen; n != 0; n--, lmp++)
child |=
CTF_TYPE_ISCHILD(lmp->ctlm_type);
}
break;
case CTF_K_ENUM:
vbytes = sizeof (ctf_enum_t) * vlen;
break;
case CTF_K_FORWARD:
case CTF_K_UNKNOWN:
vbytes = 0;
break;
case CTF_K_POINTER:
case CTF_K_TYPEDEF:
case CTF_K_VOLATILE:
case CTF_K_CONST:
case CTF_K_RESTRICT:
vbytes = 0;
break;
default:
printf("%s(%d): detected invalid CTF kind -- %u\n", __func__, __LINE__, kind);
return (EIO);
}
*xp = (uint32_t)((uintptr_t) tp - (uintptr_t) ctfdata);
tp = (ctf_type_t *)((uintptr_t)tp + increment + vbytes);
}
return (0);
}
static int
fbt_ctfoff_init(modctl_t *lf, linker_ctf_t *lc)
{
const Elf_Sym *symp = lc->symtab;;
const char *name;
const ctf_header_t *hp = (const ctf_header_t *) lc->ctftab;
const uint8_t *ctfdata = lc->ctftab + sizeof(ctf_header_t);
int i;
uint32_t *ctfoff;
uint32_t objtoff = hp->cth_objtoff;
uint32_t funcoff = hp->cth_funcoff;
ushort_t info;
ushort_t vlen;
/* Sanity check. */
if (hp->cth_magic != CTF_MAGIC) {
printf("Bad magic value in CTF data of '%s'\n",lf->pathname);
return (EINVAL);
}
if (lc->symtab == NULL) {
printf("No symbol table in '%s'\n",lf->pathname);
return (EINVAL);
}
if ((ctfoff = malloc(sizeof(uint32_t) * lc->nsym, M_LINKER, M_WAITOK)) == NULL)
return (ENOMEM);
*lc->ctfoffp = ctfoff;
for (i = 0; i < lc->nsym; i++, ctfoff++, symp++) {
if (symp->st_name == 0 || symp->st_shndx == SHN_UNDEF) {
*ctfoff = 0xffffffff;
continue;
}
if (symp->st_name < lc->strcnt)
name = lc->strtab + symp->st_name;
else
name = "(?)";
switch (ELF_ST_TYPE(symp->st_info)) {
case STT_OBJECT:
if (objtoff >= hp->cth_funcoff ||
(symp->st_shndx == SHN_ABS && symp->st_value == 0)) {
*ctfoff = 0xffffffff;
break;
}
*ctfoff = objtoff;
objtoff += sizeof (ushort_t);
break;
case STT_FUNC:
if (funcoff >= hp->cth_typeoff) {
*ctfoff = 0xffffffff;
break;
}
*ctfoff = funcoff;
info = *((const ushort_t *)(ctfdata + funcoff));
vlen = CTF_INFO_VLEN(info);
/*
* If we encounter a zero pad at the end, just skip it.
* Otherwise skip over the function and its return type
* (+2) and the argument list (vlen).
*/
if (CTF_INFO_KIND(info) == CTF_K_UNKNOWN && vlen == 0)
funcoff += sizeof (ushort_t); /* skip pad */
else
funcoff += sizeof (ushort_t) * (vlen + 2);
break;
default:
*ctfoff = 0xffffffff;
break;
}
}
return (0);
}
void
ctf_dtd_delete(ctf_file_t *fp, ctf_dtdef_t *dtd)
{
ulong_t h = dtd->dtd_type & (fp->ctf_dthashlen - 1);
ctf_dtdef_t *p, **q = &fp->ctf_dthash[h];
ctf_dmdef_t *dmd, *nmd;
size_t len;
int kind, i;
for (p = *q; p != NULL; p = p->dtd_hash) {
if (p != dtd)
q = &p->dtd_hash;
else
break;
}
if (p != NULL)
*q = p->dtd_hash;
kind = CTF_INFO_KIND(dtd->dtd_data.ctt_info);
switch (kind) {
case CTF_K_STRUCT:
case CTF_K_UNION:
case CTF_K_ENUM:
for (dmd = ctf_list_next(&dtd->dtd_u.dtu_members);
dmd != NULL; dmd = nmd) {
if (dmd->dmd_name != NULL) {
len = strlen(dmd->dmd_name) + 1;
ctf_free(dmd->dmd_name, len);
fp->ctf_dtstrlen -= len;
}
if (kind != CTF_K_ENUM)
ctf_ref_dec(fp, dmd->dmd_type);
nmd = ctf_list_next(dmd);
ctf_free(dmd, sizeof (ctf_dmdef_t));
}
break;
case CTF_K_FUNCTION:
ctf_ref_dec(fp, dtd->dtd_data.ctt_type);
for (i = 0; i < CTF_INFO_VLEN(dtd->dtd_data.ctt_info); i++)
if (dtd->dtd_u.dtu_argv[i] != 0)
ctf_ref_dec(fp, dtd->dtd_u.dtu_argv[i]);
ctf_free(dtd->dtd_u.dtu_argv, sizeof (ctf_id_t) *
CTF_INFO_VLEN(dtd->dtd_data.ctt_info));
break;
case CTF_K_ARRAY:
ctf_ref_dec(fp, dtd->dtd_u.dtu_arr.ctr_contents);
ctf_ref_dec(fp, dtd->dtd_u.dtu_arr.ctr_index);
break;
case CTF_K_TYPEDEF:
ctf_ref_dec(fp, dtd->dtd_data.ctt_type);
break;
case CTF_K_POINTER:
case CTF_K_VOLATILE:
case CTF_K_CONST:
case CTF_K_RESTRICT:
ctf_ref_dec(fp, dtd->dtd_data.ctt_type);
break;
}
if (dtd->dtd_name) {
len = strlen(dtd->dtd_name) + 1;
ctf_free(dtd->dtd_name, len);
fp->ctf_dtstrlen -= len;
}
ctf_list_delete(&fp->ctf_dtdefs, dtd);
ctf_free(dtd, sizeof (ctf_dtdef_t));
}
/*
* If the specified CTF container is writable and has been modified, reload
* this container with the updated type definitions. In order to make this
* code and the rest of libctf as simple as possible, we perform updates by
* taking the dynamic type definitions and creating an in-memory CTF file
* containing the definitions, and then call ctf_bufopen() on it. This not
* only leverages ctf_bufopen(), but also avoids having to bifurcate the rest
* of the library code with different lookup paths for static and dynamic
* type definitions. We are therefore optimizing greatly for lookup over
* update, which we assume will be an uncommon operation. We perform one
* extra trick here for the benefit of callers and to keep our code simple:
* ctf_bufopen() will return a new ctf_file_t, but we want to keep the fp
* constant for the caller, so after ctf_bufopen() returns, we use bcopy to
* swap the interior of the old and new ctf_file_t's, and then free the old.
*
* Note that the lists of dynamic types stays around and the resulting container
* is still writeable. Furthermore, the reference counts that are on the dtd's
* are still valid.
*/
int
ctf_update(ctf_file_t *fp)
{
ctf_file_t ofp, *nfp;
ctf_header_t hdr;
ctf_dtdef_t *dtd;
ctf_sect_t cts;
uchar_t *s, *s0, *t;
size_t size;
void *buf;
int err;
if (!(fp->ctf_flags & LCTF_RDWR))
return (ctf_set_errno(fp, ECTF_RDONLY));
if (!(fp->ctf_flags & LCTF_DIRTY))
return (0); /* no update required */
/*
* Fill in an initial CTF header. We will leave the label, object,
* and function sections empty and only output a header, type section,
* and string table. The type section begins at a 4-byte aligned
* boundary past the CTF header itself (at relative offset zero).
*/
bzero(&hdr, sizeof (hdr));
hdr.cth_magic = CTF_MAGIC;
hdr.cth_version = CTF_VERSION;
if (fp->ctf_flags & LCTF_CHILD)
hdr.cth_parname = 1; /* i.e. _CTF_STRTAB_TEMPLATE[1] */
/*
* Iterate through the dynamic type definition list and compute the
* size of the CTF type section we will need to generate.
*/
for (size = 0, dtd = ctf_list_next(&fp->ctf_dtdefs);
dtd != NULL; dtd = ctf_list_next(dtd)) {
uint_t kind = CTF_INFO_KIND(dtd->dtd_data.ctt_info);
uint_t vlen = CTF_INFO_VLEN(dtd->dtd_data.ctt_info);
if (dtd->dtd_data.ctt_size != CTF_LSIZE_SENT)
size += sizeof (ctf_stype_t);
else
size += sizeof (ctf_type_t);
switch (kind) {
case CTF_K_INTEGER:
case CTF_K_FLOAT:
size += sizeof (uint_t);
break;
case CTF_K_ARRAY:
size += sizeof (ctf_array_t);
break;
case CTF_K_FUNCTION:
size += sizeof (ushort_t) * (vlen + (vlen & 1));
break;
case CTF_K_STRUCT:
case CTF_K_UNION:
if (dtd->dtd_data.ctt_size < CTF_LSTRUCT_THRESH)
size += sizeof (ctf_member_t) * vlen;
else
size += sizeof (ctf_lmember_t) * vlen;
break;
case CTF_K_ENUM:
size += sizeof (ctf_enum_t) * vlen;
break;
}
}
/*
* Fill in the string table offset and size, compute the size of the
* entire CTF buffer we need, and then allocate a new buffer and
* bcopy the finished header to the start of the buffer.
*/
hdr.cth_stroff = hdr.cth_typeoff + size;
hdr.cth_strlen = fp->ctf_dtstrlen;
size = sizeof (ctf_header_t) + hdr.cth_stroff + hdr.cth_strlen;
if ((buf = ctf_data_alloc(size)) == MAP_FAILED)
return (ctf_set_errno(fp, EAGAIN));
bcopy(&hdr, buf, sizeof (ctf_header_t));
t = (uchar_t *)buf + sizeof (ctf_header_t);
s = s0 = (uchar_t *)buf + sizeof (ctf_header_t) + hdr.cth_stroff;
bcopy(_CTF_STRTAB_TEMPLATE, s, sizeof (_CTF_STRTAB_TEMPLATE));
s += sizeof (_CTF_STRTAB_TEMPLATE);
/*
* We now take a final lap through the dynamic type definition list and
* copy the appropriate type records and strings to the output buffer.
*/
for (dtd = ctf_list_next(&fp->ctf_dtdefs);
dtd != NULL; dtd = ctf_list_next(dtd)) {
uint_t kind = CTF_INFO_KIND(dtd->dtd_data.ctt_info);
uint_t vlen = CTF_INFO_VLEN(dtd->dtd_data.ctt_info);
ctf_array_t cta;
uint_t encoding;
size_t len;
if (dtd->dtd_name != NULL) {
dtd->dtd_data.ctt_name = (uint_t)(s - s0);
len = strlen(dtd->dtd_name) + 1;
bcopy(dtd->dtd_name, s, len);
s += len;
} else
dtd->dtd_data.ctt_name = 0;
if (dtd->dtd_data.ctt_size != CTF_LSIZE_SENT)
len = sizeof (ctf_stype_t);
else
len = sizeof (ctf_type_t);
bcopy(&dtd->dtd_data, t, len);
t += len;
switch (kind) {
case CTF_K_INTEGER:
case CTF_K_FLOAT:
if (kind == CTF_K_INTEGER) {
encoding = CTF_INT_DATA(
dtd->dtd_u.dtu_enc.cte_format,
dtd->dtd_u.dtu_enc.cte_offset,
dtd->dtd_u.dtu_enc.cte_bits);
} else {
encoding = CTF_FP_DATA(
dtd->dtd_u.dtu_enc.cte_format,
dtd->dtd_u.dtu_enc.cte_offset,
dtd->dtd_u.dtu_enc.cte_bits);
}
bcopy(&encoding, t, sizeof (encoding));
t += sizeof (encoding);
break;
case CTF_K_ARRAY:
cta.cta_contents = (ushort_t)
dtd->dtd_u.dtu_arr.ctr_contents;
cta.cta_index = (ushort_t)
dtd->dtd_u.dtu_arr.ctr_index;
cta.cta_nelems = dtd->dtd_u.dtu_arr.ctr_nelems;
bcopy(&cta, t, sizeof (cta));
t += sizeof (cta);
break;
case CTF_K_FUNCTION: {
ushort_t *argv = (ushort_t *)(uintptr_t)t;
uint_t argc;
for (argc = 0; argc < vlen; argc++)
*argv++ = (ushort_t)dtd->dtd_u.dtu_argv[argc];
if (vlen & 1)
*argv++ = 0; /* pad to 4-byte boundary */
t = (uchar_t *)argv;
break;
}
case CTF_K_STRUCT:
case CTF_K_UNION:
if (dtd->dtd_data.ctt_size < CTF_LSTRUCT_THRESH)
t = ctf_copy_smembers(dtd, (uint_t)(s - s0), t);
else
t = ctf_copy_lmembers(dtd, (uint_t)(s - s0), t);
s = ctf_copy_membnames(dtd, s);
break;
case CTF_K_ENUM:
t = ctf_copy_emembers(dtd, (uint_t)(s - s0), t);
s = ctf_copy_membnames(dtd, s);
break;
}
}
/*
* Finally, we are ready to ctf_bufopen() the new container. If this
* is successful, we then switch nfp and fp and free the old container.
*/
ctf_data_protect(buf, size);
cts.cts_name = _CTF_SECTION;
cts.cts_type = SHT_PROGBITS;
cts.cts_flags = 0;
cts.cts_data = buf;
cts.cts_size = size;
cts.cts_entsize = 1;
cts.cts_offset = 0;
if ((nfp = ctf_bufopen(&cts, NULL, NULL, &err)) == NULL) {
ctf_data_free(buf, size);
return (ctf_set_errno(fp, err));
}
(void) ctf_setmodel(nfp, ctf_getmodel(fp));
(void) ctf_import(nfp, fp->ctf_parent);
nfp->ctf_refcnt = fp->ctf_refcnt;
nfp->ctf_flags |= fp->ctf_flags & ~LCTF_DIRTY;
nfp->ctf_data.cts_data = NULL; /* force ctf_data_free() on close */
nfp->ctf_dthash = fp->ctf_dthash;
nfp->ctf_dthashlen = fp->ctf_dthashlen;
nfp->ctf_dtdefs = fp->ctf_dtdefs;
nfp->ctf_dtstrlen = fp->ctf_dtstrlen;
nfp->ctf_dtnextid = fp->ctf_dtnextid;
nfp->ctf_dtoldid = fp->ctf_dtnextid - 1;
nfp->ctf_specific = fp->ctf_specific;
fp->ctf_dthash = NULL;
fp->ctf_dthashlen = 0;
bzero(&fp->ctf_dtdefs, sizeof (ctf_list_t));
bcopy(fp, &ofp, sizeof (ctf_file_t));
bcopy(nfp, fp, sizeof (ctf_file_t));
bcopy(&ofp, nfp, sizeof (ctf_file_t));
/*
* Initialize the ctf_lookup_by_name top-level dictionary. We keep an
* array of type name prefixes and the corresponding ctf_hash to use.
* NOTE: This code must be kept in sync with the code in ctf_bufopen().
*/
fp->ctf_lookups[0].ctl_hash = &fp->ctf_structs;
fp->ctf_lookups[1].ctl_hash = &fp->ctf_unions;
fp->ctf_lookups[2].ctl_hash = &fp->ctf_enums;
fp->ctf_lookups[3].ctl_hash = &fp->ctf_names;
nfp->ctf_refcnt = 1; /* force nfp to be freed */
ctf_close(nfp);
return (0);
}
int
ctf_add_member(ctf_file_t *fp, ctf_id_t souid, const char *name, ctf_id_t type)
{
ctf_dtdef_t *dtd = ctf_dtd_lookup(fp, souid);
ctf_dmdef_t *dmd;
ssize_t msize, malign, ssize;
uint_t kind, vlen, root;
char *s = NULL;
if (!(fp->ctf_flags & LCTF_RDWR))
return (ctf_set_errno(fp, ECTF_RDONLY));
if (dtd == NULL)
return (ctf_set_errno(fp, ECTF_BADID));
kind = CTF_INFO_KIND(dtd->dtd_data.ctt_info);
root = CTF_INFO_ISROOT(dtd->dtd_data.ctt_info);
vlen = CTF_INFO_VLEN(dtd->dtd_data.ctt_info);
if (kind != CTF_K_STRUCT && kind != CTF_K_UNION)
return (ctf_set_errno(fp, ECTF_NOTSOU));
if (vlen == CTF_MAX_VLEN)
return (ctf_set_errno(fp, ECTF_DTFULL));
if (name != NULL) {
for (dmd = ctf_list_next(&dtd->dtd_u.dtu_members);
dmd != NULL; dmd = ctf_list_next(dmd)) {
if (dmd->dmd_name != NULL &&
strcmp(dmd->dmd_name, name) == 0)
return (ctf_set_errno(fp, ECTF_DUPMEMBER));
}
}
if ((msize = ctf_type_size(fp, type)) == CTF_ERR ||
(malign = ctf_type_align(fp, type)) == CTF_ERR)
return (CTF_ERR); /* errno is set for us */
if ((dmd = ctf_alloc(sizeof (ctf_dmdef_t))) == NULL)
return (ctf_set_errno(fp, EAGAIN));
if (name != NULL && (s = ctf_strdup(name)) == NULL) {
ctf_free(dmd, sizeof (ctf_dmdef_t));
return (ctf_set_errno(fp, EAGAIN));
}
dmd->dmd_name = s;
dmd->dmd_type = type;
dmd->dmd_value = -1;
if (kind == CTF_K_STRUCT && vlen != 0) {
ctf_dmdef_t *lmd = ctf_list_prev(&dtd->dtd_u.dtu_members);
ctf_id_t ltype = ctf_type_resolve(fp, lmd->dmd_type);
size_t off = lmd->dmd_offset;
ctf_encoding_t linfo;
ssize_t lsize;
if (ctf_type_encoding(fp, ltype, &linfo) != CTF_ERR)
off += linfo.cte_bits;
else if ((lsize = ctf_type_size(fp, ltype)) != CTF_ERR)
off += lsize * NBBY;
/*
* Round up the offset of the end of the last member to the
* next byte boundary, convert 'off' to bytes, and then round
* it up again to the next multiple of the alignment required
* by the new member. Finally, convert back to bits and store
* the result in dmd_offset. Technically we could do more
* efficient packing if the new member is a bit-field, but
* we're the "compiler" and ANSI says we can do as we choose.
*/
off = roundup(off, NBBY) / NBBY;
off = roundup(off, MAX(malign, 1));
dmd->dmd_offset = off * NBBY;
ssize = off + msize;
} else {
dmd->dmd_offset = 0;
ssize = ctf_get_ctt_size(fp, &dtd->dtd_data, NULL, NULL);
ssize = MAX(ssize, msize);
}
if (ssize > CTF_MAX_SIZE) {
dtd->dtd_data.ctt_size = CTF_LSIZE_SENT;
dtd->dtd_data.ctt_lsizehi = CTF_SIZE_TO_LSIZE_HI(ssize);
dtd->dtd_data.ctt_lsizelo = CTF_SIZE_TO_LSIZE_LO(ssize);
} else
dtd->dtd_data.ctt_size = (ushort_t)ssize;
dtd->dtd_data.ctt_info = CTF_TYPE_INFO(kind, root, vlen + 1);
ctf_list_append(&dtd->dtd_u.dtu_members, dmd);
if (s != NULL)
fp->ctf_dtstrlen += strlen(s) + 1;
ctf_ref_inc(fp, type);
fp->ctf_flags |= LCTF_DIRTY;
return (0);
}
static void
resurrect_functions(ctf_header_t *h, tdata_t *td, tdesc_t **tdarr, int tdsize,
caddr_t ctfdata, symit_data_t *si)
{
caddr_t buf = ctfdata + h->cth_funcoff;
size_t bufsz = h->cth_typeoff - h->cth_funcoff;
caddr_t dptr = buf;
iidesc_t *ii;
ushort_t info;
ushort_t retid;
GElf_Sym *sym;
int i;
symit_reset(si);
while (dptr < buf + bufsz) {
void *v = (void *) dptr;
info = *((ushort_t *)v);
dptr += 2;
if (!(sym = symit_next(si, STT_FUNC)) && info != 0)
parseterminate("Unexpected end of function symbols");
if (info == 0) {
debug(3, "Skipping null function (%s)\n",
symit_name(si));
continue;
}
v = (void *) dptr;
retid = *((ushort_t *)v);
dptr += 2;
if (retid >= tdsize)
parseterminate("Reference to invalid type %d", retid);
ii = iidesc_new(symit_name(si));
ii->ii_dtype = tdarr[retid];
if (GELF_ST_BIND(sym->st_info) == STB_LOCAL) {
ii->ii_type = II_SFUN;
ii->ii_owner = xstrdup(symit_curfile(si));
} else
ii->ii_type = II_GFUN;
ii->ii_nargs = CTF_INFO_VLEN(info);
if (ii->ii_nargs)
ii->ii_args =
xmalloc(sizeof (tdesc_t *) * ii->ii_nargs);
for (i = 0; i < ii->ii_nargs; i++, dptr += 2) {
v = (void *) dptr;
ushort_t id = *((ushort_t *)v);
if (id >= tdsize)
parseterminate("Reference to invalid type %d",
id);
ii->ii_args[i] = tdarr[id];
}
if (ii->ii_nargs && ii->ii_args[ii->ii_nargs - 1] == NULL) {
ii->ii_nargs--;
ii->ii_vargs = 1;
}
hash_add(td->td_iihash, ii);
debug(3, "Resurrected %s function %s (%d, %d args)\n",
(ii->ii_type == II_GFUN ? "global" : "static"),
ii->ii_name, retid, ii->ii_nargs);
}
}
static void
resurrect_types(ctf_header_t *h, tdata_t *td, tdesc_t **tdarr, int tdsize,
caddr_t ctfdata, int maxid)
{
caddr_t buf = ctfdata + h->cth_typeoff;
size_t bufsz = h->cth_stroff - h->cth_typeoff;
caddr_t sbuf = ctfdata + h->cth_stroff;
caddr_t dptr = buf;
tdesc_t *tdp;
uint_t data;
uint_t encoding;
size_t size, increment;
int tcnt;
int iicnt = 0;
tid_t tid, argid;
int kind, vlen;
int i;
elist_t **epp;
mlist_t **mpp;
intr_t *ip;
ctf_type_t *ctt;
ctf_array_t *cta;
ctf_enum_t *cte;
/*
* A maxid of zero indicates a request to resurrect all types, so reset
* maxid to the maximum type id.
*/
if (maxid == 0)
maxid = CTF_MAX_TYPE;
for (dptr = buf, tcnt = 0, tid = 1; dptr < buf + bufsz; tcnt++, tid++) {
if (tid > maxid)
break;
if (tid >= tdsize)
parseterminate("Reference to invalid type %d", tid);
void *v = (void *) dptr;
ctt = v;
get_ctt_size(ctt, &size, &increment);
dptr += increment;
tdp = tdarr[tid];
if (CTF_NAME_STID(ctt->ctt_name) != CTF_STRTAB_0)
parseterminate(
"Unable to cope with non-zero strtab id");
if (CTF_NAME_OFFSET(ctt->ctt_name) != 0) {
tdp->t_name =
xstrdup(sbuf + CTF_NAME_OFFSET(ctt->ctt_name));
} else
tdp->t_name = NULL;
kind = CTF_INFO_KIND(ctt->ctt_info);
vlen = CTF_INFO_VLEN(ctt->ctt_info);
switch (kind) {
case CTF_K_INTEGER:
tdp->t_type = INTRINSIC;
tdp->t_size = size;
v = (void *) dptr;
data = *((uint_t *)v);
dptr += sizeof (uint_t);
encoding = CTF_INT_ENCODING(data);
ip = xmalloc(sizeof (intr_t));
ip->intr_type = INTR_INT;
ip->intr_signed = (encoding & CTF_INT_SIGNED) ? 1 : 0;
if (encoding & CTF_INT_CHAR)
ip->intr_iformat = 'c';
else if (encoding & CTF_INT_BOOL)
ip->intr_iformat = 'b';
else if (encoding & CTF_INT_VARARGS)
ip->intr_iformat = 'v';
else
ip->intr_iformat = '\0';
ip->intr_offset = CTF_INT_OFFSET(data);
ip->intr_nbits = CTF_INT_BITS(data);
tdp->t_intr = ip;
break;
case CTF_K_FLOAT:
tdp->t_type = INTRINSIC;
tdp->t_size = size;
v = (void *) dptr;
data = *((uint_t *)v);
dptr += sizeof (uint_t);
ip = xcalloc(sizeof (intr_t));
ip->intr_type = INTR_REAL;
ip->intr_fformat = CTF_FP_ENCODING(data);
ip->intr_offset = CTF_FP_OFFSET(data);
ip->intr_nbits = CTF_FP_BITS(data);
tdp->t_intr = ip;
break;
case CTF_K_POINTER:
tdp->t_type = POINTER;
tdp->t_tdesc = tdarr[ctt->ctt_type];
break;
case CTF_K_ARRAY:
tdp->t_type = ARRAY;
tdp->t_size = size;
v = (void *) dptr;
cta = v;
dptr += sizeof (ctf_array_t);
tdp->t_ardef = xmalloc(sizeof (ardef_t));
tdp->t_ardef->ad_contents = tdarr[cta->cta_contents];
tdp->t_ardef->ad_idxtype = tdarr[cta->cta_index];
tdp->t_ardef->ad_nelems = cta->cta_nelems;
break;
case CTF_K_STRUCT:
case CTF_K_UNION:
tdp->t_type = (kind == CTF_K_STRUCT ? STRUCT : UNION);
tdp->t_size = size;
if (size < CTF_LSTRUCT_THRESH) {
for (i = 0, mpp = &tdp->t_members; i < vlen;
i++, mpp = &((*mpp)->ml_next)) {
v = (void *) dptr;
ctf_member_t *ctm = v;
dptr += sizeof (ctf_member_t);
*mpp = xmalloc(sizeof (mlist_t));
(*mpp)->ml_name = xstrdup(sbuf +
ctm->ctm_name);
(*mpp)->ml_type = tdarr[ctm->ctm_type];
(*mpp)->ml_offset = ctm->ctm_offset;
(*mpp)->ml_size = 0;
if (ctm->ctm_type > ntypes) {
parseterminate("Invalid member type ctm_type=%d",
ctm->ctm_type);
}
}
} else {
for (i = 0, mpp = &tdp->t_members; i < vlen;
i++, mpp = &((*mpp)->ml_next)) {
v = (void *) dptr;
ctf_lmember_t *ctlm = v;
dptr += sizeof (ctf_lmember_t);
*mpp = xmalloc(sizeof (mlist_t));
(*mpp)->ml_name = xstrdup(sbuf +
ctlm->ctlm_name);
(*mpp)->ml_type =
tdarr[ctlm->ctlm_type];
(*mpp)->ml_offset =
(int)CTF_LMEM_OFFSET(ctlm);
(*mpp)->ml_size = 0;
if (ctlm->ctlm_type > ntypes) {
parseterminate("Invalid lmember type ctlm_type=%d",
ctlm->ctlm_type);
}
}
}
*mpp = NULL;
break;
case CTF_K_ENUM:
tdp->t_type = ENUM;
tdp->t_size = size;
for (i = 0, epp = &tdp->t_emem; i < vlen;
i++, epp = &((*epp)->el_next)) {
v = (void *) dptr;
cte = v;
dptr += sizeof (ctf_enum_t);
*epp = xmalloc(sizeof (elist_t));
(*epp)->el_name = xstrdup(sbuf + cte->cte_name);
(*epp)->el_number = cte->cte_value;
}
*epp = NULL;
break;
case CTF_K_FORWARD:
tdp->t_type = FORWARD;
list_add(&td->td_fwdlist, tdp);
break;
case CTF_K_TYPEDEF:
tdp->t_type = TYPEDEF;
tdp->t_tdesc = tdarr[ctt->ctt_type];
break;
case CTF_K_VOLATILE:
tdp->t_type = VOLATILE;
tdp->t_tdesc = tdarr[ctt->ctt_type];
break;
case CTF_K_CONST:
tdp->t_type = CONST;
tdp->t_tdesc = tdarr[ctt->ctt_type];
break;
case CTF_K_FUNCTION:
tdp->t_type = FUNCTION;
tdp->t_fndef = xcalloc(sizeof (fndef_t));
tdp->t_fndef->fn_ret = tdarr[ctt->ctt_type];
v = (void *) (dptr + (sizeof (ushort_t) * (vlen - 1)));
if (vlen > 0 && *(ushort_t *)v == 0)
tdp->t_fndef->fn_vargs = 1;
tdp->t_fndef->fn_nargs = vlen - tdp->t_fndef->fn_vargs;
tdp->t_fndef->fn_args = xcalloc(sizeof (tdesc_t) *
vlen - tdp->t_fndef->fn_vargs);
for (i = 0; i < vlen; i++) {
v = (void *) dptr;
argid = *(ushort_t *)v;
dptr += sizeof (ushort_t);
if (argid != 0)
tdp->t_fndef->fn_args[i] = tdarr[argid];
}
if (vlen & 1)
dptr += sizeof (ushort_t);
break;
case CTF_K_RESTRICT:
tdp->t_type = RESTRICT;
tdp->t_tdesc = tdarr[ctt->ctt_type];
break;
case CTF_K_UNKNOWN:
break;
default:
warning("Can't parse unknown CTF type %d\n", kind);
}
if (CTF_INFO_ISROOT(ctt->ctt_info)) {
iidesc_t *ii = iidesc_new(tdp->t_name);
if (tdp->t_type == STRUCT || tdp->t_type == UNION ||
tdp->t_type == ENUM)
ii->ii_type = II_SOU;
else
ii->ii_type = II_TYPE;
ii->ii_dtype = tdp;
hash_add(td->td_iihash, ii);
iicnt++;
}
debug(3, "Resurrected %d %stype %s (%d)\n", tdp->t_type,
(CTF_INFO_ISROOT(ctt->ctt_info) ? "root " : ""),
tdesc_name(tdp), tdp->t_id);
}
debug(3, "Resurrected %d types (%d were roots)\n", tcnt, iicnt);
}
/*
* Close the specified CTF container and free associated data structures. Note
* that ctf_close() is a reference counted operation: if the specified file is
* the parent of other active containers, its reference count will be greater
* than one and it will be freed later when no active children exist.
*/
void
ctf_close(ctf_file_t *fp)
{
ctf_dtdef_t *dtd, *ntd;
ctf_dmdef_t *dmd, *nmd;
if (fp == NULL)
return; /* allow ctf_close(NULL) to simplify caller code */
ctf_dprintf("ctf_close(%p) refcnt=%u\n", (void *)fp, fp->ctf_refcnt);
if (fp->ctf_refcnt > 1) {
fp->ctf_refcnt--;
return;
}
for (dtd = ctf_list_next(&fp->ctf_dtdefs); dtd != NULL; dtd = ntd) {
switch (CTF_INFO_KIND(dtd->dtd_data.ctt_info)) {
case CTF_K_STRUCT:
case CTF_K_UNION:
case CTF_K_ENUM:
for (dmd = ctf_list_next(&dtd->dtd_u.dtu_members);
dmd != NULL; dmd = nmd) {
if (dmd->dmd_name != NULL) {
ctf_free(dmd->dmd_name,
strlen(dmd->dmd_name) + 1);
}
nmd = ctf_list_next(dmd);
ctf_free(dmd, sizeof (ctf_dmdef_t));
}
break;
case CTF_K_FUNCTION:
ctf_free(dtd->dtd_u.dtu_argv, sizeof (ctf_id_t) *
CTF_INFO_VLEN(dtd->dtd_data.ctt_info));
break;
}
if (dtd->dtd_name != NULL)
ctf_free(dtd->dtd_name, strlen(dtd->dtd_name) + 1);
ntd = ctf_list_next(dtd);
ctf_free(dtd, sizeof (ctf_dtdef_t));
}
if (fp->ctf_parent != NULL)
ctf_close(fp->ctf_parent);
if (fp->ctf_flags & LCTF_MMAP) {
if (fp->ctf_data.cts_data != NULL)
ctf_sect_munmap(&fp->ctf_data);
if (fp->ctf_symtab.cts_data != NULL)
ctf_sect_munmap(&fp->ctf_symtab);
if (fp->ctf_strtab.cts_data != NULL)
ctf_sect_munmap(&fp->ctf_strtab);
}
if (fp->ctf_data.cts_name != _CTF_NULLSTR &&
fp->ctf_data.cts_name != NULL) {
ctf_free((char *)fp->ctf_data.cts_name,
strlen(fp->ctf_data.cts_name) + 1);
}
if (fp->ctf_symtab.cts_name != _CTF_NULLSTR &&
fp->ctf_symtab.cts_name != NULL) {
ctf_free((char *)fp->ctf_symtab.cts_name,
strlen(fp->ctf_symtab.cts_name) + 1);
}
if (fp->ctf_strtab.cts_name != _CTF_NULLSTR &&
fp->ctf_strtab.cts_name != NULL) {
ctf_free((char *)fp->ctf_strtab.cts_name,
strlen(fp->ctf_strtab.cts_name) + 1);
}
if (fp->ctf_base != fp->ctf_data.cts_data && fp->ctf_base != NULL)
ctf_data_free((void *)fp->ctf_base, fp->ctf_size);
if (fp->ctf_sxlate != NULL)
ctf_free(fp->ctf_sxlate, sizeof (uint_t) * fp->ctf_nsyms);
if (fp->ctf_txlate != NULL) {
ctf_free(fp->ctf_txlate,
sizeof (uint_t) * (fp->ctf_typemax + 1));
}
if (fp->ctf_ptrtab != NULL) {
ctf_free(fp->ctf_ptrtab,
sizeof (ushort_t) * (fp->ctf_typemax + 1));
}
ctf_hash_destroy(&fp->ctf_structs);
ctf_hash_destroy(&fp->ctf_unions);
ctf_hash_destroy(&fp->ctf_enums);
ctf_hash_destroy(&fp->ctf_names);
ctf_free(fp, sizeof (ctf_file_t));
}
static int
read_types(const ctf_header_t *hp, const ctf_data_t *cd)
{
/* LINTED - pointer alignment */
const ctf_type_t *tp = (ctf_type_t *)(cd->cd_ctfdata + hp->cth_typeoff);
/* LINTED - pointer alignment */
const ctf_type_t *end = (ctf_type_t *)(cd->cd_ctfdata + hp->cth_stroff);
ulong_t id;
if (flags != F_STATS)
print_line("- Types ");
if (hp->cth_typeoff & 3)
WARN("cth_typeoff is not aligned properly\n");
if (hp->cth_typeoff >= cd->cd_ctflen)
WARN("file is truncated or cth_typeoff is corrupt\n");
if (hp->cth_stroff >= cd->cd_ctflen)
WARN("file is truncated or cth_stroff is corrupt\n");
if (hp->cth_typeoff > hp->cth_stroff)
WARN("file is corrupt -- cth_typeoff > cth_stroff\n");
id = 1;
if (hp->cth_parlabel || hp->cth_parname)
id += 1 << CTF_PARENT_SHIFT;
for (/* */; tp < end; id++) {
ulong_t i, n = CTF_INFO_VLEN(tp->ctt_info);
size_t size, increment, vlen = 0;
int kind = CTF_INFO_KIND(tp->ctt_info);
union {
const void *ptr;
const ctf_array_t *ap;
const ctf_member_t *mp;
const ctf_lmember_t *lmp;
const ctf_enum_t *ep;
const ushort_t *argp;
} u;
if (flags != F_STATS) {
(void) printf(" %c%lu%c ",
"[<"[CTF_INFO_ISROOT(tp->ctt_info)], id,
"]>"[CTF_INFO_ISROOT(tp->ctt_info)]);
}
if (tp->ctt_size == CTF_LSIZE_SENT) {
increment = sizeof (ctf_type_t);
size = (size_t)CTF_TYPE_LSIZE(tp);
} else {
increment = sizeof (ctf_stype_t);
size = tp->ctt_size;
}
u.ptr = (caddr_t)tp + increment;
switch (kind) {
case CTF_K_INTEGER:
if (flags != F_STATS) {
uint_t encoding = *((const uint_t *)u.ptr);
(void) printf("INTEGER %s encoding=%s offset=%u"
" bits=%u", ref_to_str(tp->ctt_name, hp,
cd), int_encoding_to_str(
CTF_INT_ENCODING(encoding)),
CTF_INT_OFFSET(encoding),
CTF_INT_BITS(encoding));
}
vlen = sizeof (uint_t);
break;
case CTF_K_FLOAT:
if (flags != F_STATS) {
uint_t encoding = *((const uint_t *)u.ptr);
(void) printf("FLOAT %s encoding=%s offset=%u "
"bits=%u", ref_to_str(tp->ctt_name, hp,
cd), fp_encoding_to_str(
CTF_FP_ENCODING(encoding)),
CTF_FP_OFFSET(encoding),
CTF_FP_BITS(encoding));
}
vlen = sizeof (uint_t);
break;
case CTF_K_POINTER:
if (flags != F_STATS) {
(void) printf("POINTER %s refers to %u",
ref_to_str(tp->ctt_name, hp, cd),
tp->ctt_type);
}
break;
case CTF_K_ARRAY:
if (flags != F_STATS) {
(void) printf("ARRAY %s content: %u index: %u "
"nelems: %u\n", ref_to_str(tp->ctt_name,
hp, cd), u.ap->cta_contents,
u.ap->cta_index, u.ap->cta_nelems);
}
vlen = sizeof (ctf_array_t);
break;
case CTF_K_FUNCTION:
if (flags != F_STATS) {
(void) printf("FUNCTION %s returns: %u args: (",
ref_to_str(tp->ctt_name, hp, cd),
tp->ctt_type);
if (n != 0) {
(void) printf("%u", *u.argp++);
for (i = 1; i < n; i++, u.argp++)
(void) printf(", %u", *u.argp);
}
(void) printf(")");
}
vlen = sizeof (ushort_t) * (n + (n & 1));
break;
case CTF_K_STRUCT:
case CTF_K_UNION:
if (kind == CTF_K_STRUCT) {
stats.s_nsmem += n;
stats.s_smmax = MAX(stats.s_smmax, n);
stats.s_nsbytes += size;
stats.s_sbmax = MAX(stats.s_sbmax, size);
if (flags != F_STATS)
(void) printf("STRUCT");
} else {
stats.s_numem += n;
stats.s_ummax = MAX(stats.s_ummax, n);
stats.s_nubytes += size;
stats.s_ubmax = MAX(stats.s_ubmax, size);
if (flags != F_STATS)
(void) printf("UNION");
}
if (flags != F_STATS) {
(void) printf(" %s (%d bytes)\n",
ref_to_str(tp->ctt_name, hp, cd), size);
if (size >= CTF_LSTRUCT_THRESH) {
for (i = 0; i < n; i++, u.lmp++) {
(void) printf(
"\t%s type=%u off=%llu\n",
ref_to_str(u.lmp->ctlm_name,
hp, cd), u.lmp->ctlm_type,
CTF_LMEM_OFFSET(u.lmp));
}
} else {
for (i = 0; i < n; i++, u.mp++) {
(void) printf(
"\t%s type=%u off=%u\n",
ref_to_str(u.mp->ctm_name,
hp, cd), u.mp->ctm_type,
u.mp->ctm_offset);
}
}
}
vlen = n * (size >= CTF_LSTRUCT_THRESH ?
sizeof (ctf_lmember_t) : sizeof (ctf_member_t));
break;
case CTF_K_ENUM:
if (flags != F_STATS) {
(void) printf("ENUM %s\n",
ref_to_str(tp->ctt_name, hp, cd));
for (i = 0; i < n; i++, u.ep++) {
(void) printf("\t%s = %d\n",
ref_to_str(u.ep->cte_name, hp, cd),
u.ep->cte_value);
}
}
stats.s_nemem += n;
stats.s_emmax = MAX(stats.s_emmax, n);
vlen = sizeof (ctf_enum_t) * n;
break;
case CTF_K_FORWARD:
if (flags != F_STATS) {
(void) printf("FORWARD %s",
ref_to_str(tp->ctt_name, hp, cd));
}
break;
case CTF_K_TYPEDEF:
if (flags != F_STATS) {
(void) printf("TYPEDEF %s refers to %u",
ref_to_str(tp->ctt_name, hp, cd),
tp->ctt_type);
}
break;
case CTF_K_VOLATILE:
if (flags != F_STATS) {
(void) printf("VOLATILE %s refers to %u",
ref_to_str(tp->ctt_name, hp, cd),
tp->ctt_type);
}
break;
case CTF_K_CONST:
if (flags != F_STATS) {
(void) printf("CONST %s refers to %u",
ref_to_str(tp->ctt_name, hp, cd),
tp->ctt_type);
}
break;
case CTF_K_RESTRICT:
if (flags != F_STATS) {
(void) printf("RESTRICT %s refers to %u",
ref_to_str(tp->ctt_name, hp, cd),
tp->ctt_type);
}
break;
case CTF_K_UNKNOWN:
break; /* hole in type id space */
default:
(void) printf("unexpected kind %u\n", kind);
return (E_ERROR);
}
if (flags != F_STATS)
(void) printf("\n");
stats.s_ntypes++;
stats.s_types[kind]++;
tp = (ctf_type_t *)((uintptr_t)tp + increment + vlen);
}
return (E_SUCCESS);
}
static int
read_funcs(const ctf_header_t *hp, const ctf_data_t *cd)
{
/* LINTED - pointer alignment */
const ushort_t *fp = (ushort_t *)(cd->cd_ctfdata + hp->cth_funcoff);
/* LINTED - pointer alignment */
const ushort_t *end = (ushort_t *)(cd->cd_ctfdata + hp->cth_typeoff);
ulong_t id;
int symidx;
if (flags != F_STATS)
print_line("- Functions ");
if (hp->cth_funcoff & 1)
WARN("cth_funcoff is not aligned properly\n");
if (hp->cth_funcoff >= cd->cd_ctflen)
WARN("file is truncated or cth_funcoff is corrupt\n");
if (hp->cth_typeoff >= cd->cd_ctflen)
WARN("file is truncated or cth_typeoff is corrupt\n");
if (hp->cth_funcoff > hp->cth_typeoff)
WARN("file is corrupt -- cth_funcoff > cth_typeoff\n");
for (symidx = -1, id = 0; fp < end; id++) {
ushort_t info = *fp++;
ushort_t kind = CTF_INFO_KIND(info);
ushort_t n = CTF_INFO_VLEN(info);
ushort_t i;
int nextsym;
char *name;
if (cd->cd_symdata == NULL || (nextsym = next_sym(cd, symidx,
STT_FUNC, &name)) < 0)
name = NULL;
else
symidx = nextsym;
if (kind == CTF_K_UNKNOWN && n == 0)
continue; /* skip padding */
if (kind != CTF_K_FUNCTION) {
(void) printf(" [%lu] unexpected kind -- %u\n",
id, kind);
return (E_ERROR);
}
if (fp + n > end) {
(void) printf(" [%lu] vlen %u extends past section "
"boundary\n", id, n);
return (E_ERROR);
}
if (flags != F_STATS) {
(void) printf(" [%lu] FUNC ", id);
if (name != NULL)
(void) printf("(%s) ", name);
(void) printf("returns: %u args: (", *fp++);
if (n != 0) {
(void) printf("%u", *fp++);
for (i = 1; i < n; i++)
(void) printf(", %u", *fp++);
}
(void) printf(")\n");
} else
fp += n + 1; /* skip to next function definition */
stats.s_nfunc++;
stats.s_nargs += n;
stats.s_argmax = MAX(stats.s_argmax, n);
}
return (E_SUCCESS);
}
static int
fbt_ctfoff_init(dtrace_modctl_t *mod, mod_ctf_t *mc)
{
const Elf_Sym *symp = mc->symtab;
const char *name;
const ctf_header_t *hp = (const ctf_header_t *) mc->ctftab;
const uint8_t *ctfdata = mc->ctftab + sizeof(ctf_header_t);
int i;
uint32_t *ctfoff;
uint32_t objtoff = hp->cth_objtoff;
uint32_t funcoff = hp->cth_funcoff;
ushort_t info;
ushort_t vlen;
int nsyms = (mc->nmap != NULL) ? mc->nmapsize : mc->nsym;
/* Sanity check. */
if (hp->cth_magic != CTF_MAGIC) {
printf("Bad magic value in CTF data of '%s'\n",
mod->mod_info->mi_name);
return (EINVAL);
}
if (mc->symtab == NULL) {
printf("No symbol table in '%s'\n",
mod->mod_info->mi_name);
return (EINVAL);
}
if ((ctfoff = malloc(sizeof(uint32_t) * nsyms, M_FBT, M_WAITOK)) == NULL)
return (ENOMEM);
mc->ctfoffp = ctfoff;
for (i = 0; i < nsyms; i++, ctfoff++, symp++) {
if (mc->nmap != NULL) {
if (mc->nmap[i] == 0) {
printf("%s.%d: Error! Got zero nmap!\n",
__func__, __LINE__);
continue;
}
/* CTF expects the pre-sorted symbol ordering,
* so map it from that to the current sorted
* and trimmed symbol table.
* ctfoff[new-ind] = oldind symbol info.
*/
/* map old index to new symbol table */
symp = &mc->symtab[mc->nmap[i] - 1];
/* map old index to new ctfoff index */
ctfoff = &mc->ctfoffp[mc->nmap[i]-1];
}
if (symp->st_name == 0 || symp->st_shndx == SHN_UNDEF) {
*ctfoff = 0xffffffff;
continue;
}
if (symp->st_name < mc->strcnt)
name = mc->strtab + symp->st_name;
else
name = "(?)";
switch (ELF_ST_TYPE(symp->st_info)) {
case STT_OBJECT:
if (objtoff >= hp->cth_funcoff ||
(symp->st_shndx == SHN_ABS && symp->st_value == 0)) {
*ctfoff = 0xffffffff;
break;
}
*ctfoff = objtoff;
objtoff += sizeof (ushort_t);
break;
case STT_FUNC:
if (funcoff >= hp->cth_typeoff) {
*ctfoff = 0xffffffff;
break;
}
*ctfoff = funcoff;
info = *((const ushort_t *)(ctfdata + funcoff));
vlen = CTF_INFO_VLEN(info);
/*
* If we encounter a zero pad at the end, just skip it.
* Otherwise skip over the function and its return type
* (+2) and the argument list (vlen).
*/
if (CTF_INFO_KIND(info) == CTF_K_UNKNOWN && vlen == 0)
funcoff += sizeof (ushort_t); /* skip pad */
else
funcoff += sizeof (ushort_t) * (vlen + 2);
break;
default:
*ctfoff = 0xffffffff;
break;
}
}
return (0);
}