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freebsd-dev/contrib/elftoolchain/libelftc/libelftc_dem_gnu2.c
Ed Maste bee2765cc1 Update ELF Tool Chain to upstream r3520 
Highlights of changes between r3490 and r3520:

- Improve C++ demangling
- Improve compatibility with Binutils tools wrt. error messages
- Handle additional types/sections/etc. in readelf and elfdump
- addr2line, cxxfilt: use setvbuf to set line buffering for filter use

PR:		218395
MFC after:	2 weeks
Relnotes:	Yes
Sponsored by:	The FreeBSD Foundation
2017-04-17 23:56:48 +00:00

1366 lines
26 KiB
C
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/*-
* Copyright (c) 2008 Hyogeol Lee <hyogeollee@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 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 SUCH DAMAGE.
*/
#include <sys/types.h>
#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <libelftc.h>
#include <limits.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "_libelftc.h"
ELFTC_VCSID("$Id: libelftc_dem_gnu2.c 3513 2016-12-29 07:04:22Z kaiwang27 $");
/**
* @file cpp_demangle_gnu2.c
* @brief Decode function name encoding in GNU 2.
*
* Function name encoding in GNU 2 based on ARM style.
*/
enum encode_type {
ENCODE_FUNC, ENCODE_OP, ENCODE_OP_CT, ENCODE_OP_DT, ENCODE_OP_USER,
ENCODE_OP_TF, ENCODE_OP_TI, ENCODE_OP_VT
};
struct cstring {
char *buf;
size_t size;
};
struct demangle_data {
bool ptr, ref, cnst, array, cnst_fn, class_name;
struct cstring array_str;
const char *p;
enum encode_type type;
struct vector_str vec;
struct vector_str arg;
};
#define SIMPLE_HASH(x,y) (64 * x + y)
#define VEC_PUSH_STR(d,s) vector_str_push((d), (s), strlen((s)))
#define CPP_DEMANGLE_GNU2_TRY 128
static void dest_cstring(struct cstring *);
static void dest_demangle_data(struct demangle_data *);
static bool init_cstring(struct cstring *, size_t);
static bool init_demangle_data(struct demangle_data *);
static bool push_CTDT(const char *, size_t, struct vector_str *);
static bool read_array(struct demangle_data *);
static bool read_class(struct demangle_data *);
static bool read_func(struct demangle_data *);
static bool read_func_name(struct demangle_data *);
static bool read_func_ptr(struct demangle_data *);
static bool read_memptr(struct demangle_data *);
static bool read_op(struct demangle_data *);
static bool read_op_user(struct demangle_data *);
static bool read_qual_name(struct demangle_data *);
static int read_subst(struct demangle_data *);
static int read_subst_iter(struct demangle_data *);
static bool read_type(struct demangle_data *);
/**
* @brief Decode the input string by the GNU 2 style.
*
* @return New allocated demangled string or NULL if failed.
*/
char *
cpp_demangle_gnu2(const char *org)
{
struct demangle_data d;
size_t arg_begin, arg_len;
unsigned int try;
char *rtn, *arg;
if (org == NULL)
return (NULL);
if (init_demangle_data(&d) == false)
return (NULL);
try = 0;
rtn = NULL;
d.p = org;
if (read_func_name(&d) == false)
goto clean;
switch (d.type) {
case ENCODE_FUNC :
case ENCODE_OP :
break;
case ENCODE_OP_CT :
if (push_CTDT("::", 2, &d.vec) == false)
goto clean;
break;
case ENCODE_OP_DT :
if (push_CTDT("::~", 3, &d.vec) == false)
goto clean;
if (VEC_PUSH_STR(&d.vec, "(void)") == false)
goto clean;
goto flat;
case ENCODE_OP_USER :
case ENCODE_OP_TF :
case ENCODE_OP_TI :
case ENCODE_OP_VT :
goto flat;
}
if (*d.p == 'F')
++d.p;
else if (*d.p == '\0') {
if (d.class_name == true) {
if (VEC_PUSH_STR(&d.vec, "(void)") == false)
goto clean;
goto flat;
} else
goto clean;
}
/* start argument types */
if (VEC_PUSH_STR(&d.vec, "(") == false)
goto clean;
for (;;) {
if (*d.p == 'T') {
const int rtn_subst = read_subst(&d);
if (rtn_subst == -1)
goto clean;
else if (rtn_subst == 1)
break;
continue;
}
if (*d.p == 'N') {
const int rtn_subst_iter = read_subst_iter(&d);
if (rtn_subst_iter == -1)
goto clean;
else if(rtn_subst_iter == 1)
break;
continue;
}
arg_begin = d.vec.size;
if (read_type(&d) == false)
goto clean;
if (d.ptr == true) {
if (VEC_PUSH_STR(&d.vec, "*") == false)
goto clean;
d.ptr = false;
}
if (d.ref == true) {
if (VEC_PUSH_STR(&d.vec, "&") == false)
goto clean;
d.ref = false;
}
if (d.cnst == true) {
if (VEC_PUSH_STR(&d.vec, " const") == false)
goto clean;
d.cnst = false;
}
if (d.array == true) {
if (vector_str_push(&d.vec, d.array_str.buf,
d.array_str.size) == false)
goto clean;
dest_cstring(&d.array_str);
d.array = false;
}
if (*d.p == '\0')
break;
if ((arg = vector_str_substr(&d.vec, arg_begin, d.vec.size - 1,
&arg_len)) == NULL)
goto clean;
if (vector_str_push(&d.arg, arg, arg_len) == false)
goto clean;
free(arg);
if (VEC_PUSH_STR(&d.vec, ", ") == false)
goto clean;
if (++try > CPP_DEMANGLE_GNU2_TRY)
goto clean;
}
/* end argument types */
if (VEC_PUSH_STR(&d.vec, ")") == false)
goto clean;
flat:
if (d.cnst_fn == true && VEC_PUSH_STR(&d.vec, " const") == false)
goto clean;
rtn = vector_str_get_flat(&d.vec, NULL);
clean:
dest_demangle_data(&d);
return (rtn);
}
/**
* @brief Test input string is encoded by the GNU 2 style.
*
* @return True if input string is encoded by the GNU 2 style.
*/
bool
is_cpp_mangled_gnu2(const char *org)
{
char *str;
bool rtn = false;
if (org == NULL)
return (false);
/* search valid text to end */
str = strstr(org, "__");
while (str != NULL) {
if (*(str + 2) != '\0') {
if (*(str + 2) == 'C' ||
*(str + 2) == 'F' ||
*(str + 2) == 'Q' ||
ELFTC_ISDIGIT(*(str + 2))) {
rtn |= true;
break;
}
if (*(str + 3) != '\0') {
switch (SIMPLE_HASH(*(str + 2), *(str + 3))) {
case SIMPLE_HASH('m', 'l') :
case SIMPLE_HASH('d', 'v') :
case SIMPLE_HASH('m', 'd') :
case SIMPLE_HASH('p', 'l') :
case SIMPLE_HASH('m', 'i') :
case SIMPLE_HASH('l', 's') :
case SIMPLE_HASH('r', 's') :
case SIMPLE_HASH('e', 'q') :
case SIMPLE_HASH('n', 'e') :
case SIMPLE_HASH('l', 't') :
case SIMPLE_HASH('g', 't') :
case SIMPLE_HASH('l', 'e') :
case SIMPLE_HASH('g', 'e') :
case SIMPLE_HASH('a', 'd') :
case SIMPLE_HASH('o', 'r') :
case SIMPLE_HASH('e', 'r') :
case SIMPLE_HASH('a', 'a') :
case SIMPLE_HASH('o', 'o') :
case SIMPLE_HASH('n', 't') :
case SIMPLE_HASH('c', 'o') :
case SIMPLE_HASH('p', 'p') :
case SIMPLE_HASH('m', 'm') :
case SIMPLE_HASH('a', 's') :
case SIMPLE_HASH('r', 'f') :
case SIMPLE_HASH('a', 'p') :
case SIMPLE_HASH('a', 'm') :
case SIMPLE_HASH('a', 'l') :
case SIMPLE_HASH('a', 'r') :
case SIMPLE_HASH('a', 'o') :
case SIMPLE_HASH('a', 'e') :
case SIMPLE_HASH('c', 'm') :
case SIMPLE_HASH('r', 'm') :
case SIMPLE_HASH('c', 'l') :
case SIMPLE_HASH('v', 'c') :
case SIMPLE_HASH('n', 'w') :
case SIMPLE_HASH('d', 'l') :
case SIMPLE_HASH('o', 'p') :
case SIMPLE_HASH('t', 'f') :
case SIMPLE_HASH('t', 'i') :
rtn |= true;
break;
}
}
}
str = strstr(str + 2, "__");
}
rtn |= strstr(org, "_$_") != NULL;
rtn |= strstr(org, "_vt$") != NULL;
return (rtn);
}
static void
dest_cstring(struct cstring *s)
{
if (s == NULL)
return;
free(s->buf);
s->buf = NULL;
s->size = 0;
}
static void
dest_demangle_data(struct demangle_data *d)
{
if (d != NULL) {
vector_str_dest(&d->arg);
vector_str_dest(&d->vec);
dest_cstring(&d->array_str);
}
}
static bool
init_cstring(struct cstring *s, size_t len)
{
if (s == NULL || len <= 1)
return (false);
if ((s->buf = malloc(sizeof(char) * len)) == NULL)
return (false);
s->size = len - 1;
return (true);
}
static bool
init_demangle_data(struct demangle_data *d)
{
if (d == NULL)
return (false);
d->ptr = false;
d->ref = false;
d->cnst = false;
d->array = false;
d->cnst_fn = false;
d->class_name = false;
d->array_str.buf = NULL;
d->array_str.size = 0;
d->type = ENCODE_FUNC;
if (vector_str_init(&d->vec) == false)
return (false);
if (vector_str_init(&d->arg) == false) {
vector_str_dest(&d->vec);
return (false);
}
return (true);
}
static bool
push_CTDT(const char *s, size_t l, struct vector_str *v)
{
if (s == NULL || l == 0 || v == NULL)
return (false);
if (vector_str_push(v, s, l) == false)
return (false);
assert(v->size > 1);
return (VEC_PUSH_STR(v, v->container[v->size - 2]));
}
static bool
read_array(struct demangle_data *d)
{
size_t len;
const char *end;
if (d == NULL || d->p == NULL)
return (false);
end = d->p;
assert(end != NULL);
for (;;) {
if (*end == '\0')
return (false);
if (ELFTC_ISDIGIT(*end) == 0)
break;
++end;
}
if (*end != '_')
return (false);
len = end - d->p;
assert(len > 0);
dest_cstring(&d->array_str);
if (init_cstring(&d->array_str, len + 3) == false)
return (false);
strncpy(d->array_str.buf + 1, d->p, len);
*d->array_str.buf = '[';
*(d->array_str.buf + len + 1) = ']';
d->array = true;
d->p = end + 1;
return (true);
}
static bool
read_class(struct demangle_data *d)
{
size_t len;
char *str;
if (d == NULL)
return (false);
len = strtol(d->p, &str, 10);
if (len == 0 && (errno == EINVAL || errno == ERANGE))
return (false);
assert(len > 0);
assert(str != NULL);
if (vector_str_push(&d->vec, str, len) == false)
return (false);
d->p = str + len;
d->class_name = true;
return (true);
}
static bool
read_func(struct demangle_data *d)
{
size_t len;
const char *name;
char *delim;
if (d == NULL)
return (false);
assert(d->p != NULL && "d->p (org str) is NULL");
if ((delim = strstr(d->p, "__")) == NULL)
return (false);
len = delim - d->p;
assert(len != 0);
name = d->p;
d->p = delim + 2;
if (*d->p == 'C') {
++d->p;
d->cnst_fn = true;
}
if (*d->p == 'Q' && ELFTC_ISDIGIT(*(d->p + 1))) {
++d->p;
if (read_qual_name(d) == false)
return (false);
} else if (ELFTC_ISDIGIT(*d->p)) {
if (read_class(d) == false)
return (false);
if (VEC_PUSH_STR(&d->vec, "::") == false)
return (false);
}
return (vector_str_push(&d->vec, name, len));
}
static bool
read_func_name(struct demangle_data *d)
{
size_t len;
bool rtn;
char *op_name;
if (d == NULL)
return (false);
rtn = false;
op_name = NULL;
assert(d->p != NULL && "d->p (org str) is NULL");
if (*d->p == '_' && *(d->p + 1) == '_') {
d->p += 2;
/* CTOR */
if (*d->p == 'Q' && ELFTC_ISDIGIT(*(d->p + 1))) {
++d->p;
d->type = ENCODE_OP_CT;
if (read_qual_name(d) == false)
return (false);
return (vector_str_pop(&d->vec));
} else if (ELFTC_ISDIGIT(*d->p)) {
d->type = ENCODE_OP_CT;
return (read_class(d));
}
d->type = ENCODE_OP;
if (read_op(d) == false) {
/* not good condition, start function name with '__' */
d->type = ENCODE_FUNC;
if (VEC_PUSH_STR(&d->vec, "__") == false)
return (false);
return (read_func(d));
}
if (d->type == ENCODE_OP_USER ||
d->type == ENCODE_OP_TF ||
d->type == ENCODE_OP_TI)
return (true);
/* skip "__" */
d->p += 2;
if (*d->p == 'C') {
++d->p;
d->cnst_fn = true;
}
/* assume delimiter is removed */
if (*d->p == 'Q' && ELFTC_ISDIGIT(*(d->p + 1))) {
++d->p;
assert(d->vec.size > 0);
len = strlen(d->vec.container[d->vec.size - 1]);
if ((op_name = malloc(sizeof(char) * (len + 1)))
== NULL)
return (false);
snprintf(op_name, len + 1, "%s",
d->vec.container[d->vec.size - 1]);
vector_str_pop(&d->vec);
if (read_qual_name(d) == false)
goto clean;
if (VEC_PUSH_STR(&d->vec, "::") == false)
goto clean;
if (vector_str_push(&d->vec, op_name, len) == false)
goto clean;
rtn = true;
} else if (ELFTC_ISDIGIT(*d->p)) {
assert(d->vec.size > 0);
len = strlen(d->vec.container[d->vec.size - 1]);
if ((op_name = malloc(sizeof(char) * (len + 1)))
== NULL)
return (false);
snprintf(op_name, len + 1, "%s",
d->vec.container[d->vec.size - 1]);
vector_str_pop(&d->vec);
if (read_class(d) == false)
goto clean;
if (VEC_PUSH_STR(&d->vec, "::") == false)
goto clean;
if (vector_str_push(&d->vec, op_name, len) == false)
goto clean;
rtn = true;
}
} else if (memcmp(d->p, "_$_", 3) == 0) {
/* DTOR */
d->p += 3;
d->type = ENCODE_OP_DT;
if (*d->p == 'Q' && ELFTC_ISDIGIT(*(d->p + 1))) {
++d->p;
if (read_qual_name(d) == false)
return (false);
return (vector_str_pop(&d->vec));
} else if (ELFTC_ISDIGIT(*d->p))
return (read_class(d));
return (false);
} else if (memcmp(d->p, "_vt$", 4) == 0) {
/* vtable */
d->p += 4;
d->type = ENCODE_OP_VT;
if (*d->p == 'Q' && ELFTC_ISDIGIT(*(d->p + 1))) {
++d->p;
if (read_qual_name(d) == false)
return (false);
if (vector_str_pop(&d->vec) == false)
return (false);
} else if (ELFTC_ISDIGIT(*d->p)) {
if (read_class(d) == false)
return (false);
}
return (VEC_PUSH_STR(&d->vec, " virtual table"));
} else
return (read_func(d));
clean:
free(op_name);
return (rtn);
}
/* Read function ptr type */
static bool
read_func_ptr(struct demangle_data *d)
{
struct demangle_data fptr;
size_t arg_len, rtn_len;
char *arg_type, *rtn_type;
int lim;
if (d == NULL)
return (false);
if (init_demangle_data(&fptr) == false)
return (false);
fptr.p = d->p + 1;
lim = 0;
arg_type = NULL;
rtn_type = NULL;
for (;;) {
if (read_type(&fptr) == false) {
dest_demangle_data(&fptr);
return (false);
}
if (fptr.ptr == true) {
if (VEC_PUSH_STR(&fptr.vec, "*") == false) {
dest_demangle_data(&fptr);
return (false);
}
fptr.ptr = false;
}
if (fptr.ref == true) {
if (VEC_PUSH_STR(&fptr.vec, "&") == false) {
dest_demangle_data(&fptr);
return (false);
}
fptr.ref = false;
}
if (fptr.cnst == true) {
if (VEC_PUSH_STR(&fptr.vec, " const") == false) {
dest_demangle_data(&fptr);
return (false);
}
fptr.cnst = false;
}
if (*fptr.p == '_')
break;
if (VEC_PUSH_STR(&fptr.vec, ", ") == false) {
dest_demangle_data(&fptr);
return (false);
}
if (++lim > CPP_DEMANGLE_GNU2_TRY) {
dest_demangle_data(&fptr);
return (false);
}
}
arg_type = vector_str_get_flat(&fptr.vec, &arg_len);
/* skip '_' */
d->p = fptr.p + 1;
dest_demangle_data(&fptr);
if (init_demangle_data(&fptr) == false) {
free(arg_type);
return (false);
}
fptr.p = d->p;
lim = 0;
if (read_type(&fptr) == false) {
free(arg_type);
dest_demangle_data(&fptr);
return (false);
}
rtn_type = vector_str_get_flat(&fptr.vec, &rtn_len);
d->p = fptr.p;
dest_demangle_data(&fptr);
if (vector_str_push(&d->vec, rtn_type, rtn_len) == false) {
free(rtn_type);
free(arg_type);
return (false);
}
free(rtn_type);
if (VEC_PUSH_STR(&d->vec, " (*)(") == false) {
free(arg_type);
return (false);
}
if (vector_str_push(&d->vec, arg_type, arg_len) == false) {
free(arg_type);
return (false);
}
free(arg_type);
return (VEC_PUSH_STR(&d->vec, ")"));
}
static bool
read_memptr(struct demangle_data *d)
{
struct demangle_data mptr;
size_t len;
bool rtn;
char *mptr_str;
if (d == NULL || d->p == NULL)
return (false);
if (init_demangle_data(&mptr) == false)
return (false);
rtn = false;
mptr_str = NULL;
mptr.p = d->p;
if (*mptr.p == 'Q') {
++mptr.p;
if (read_qual_name(&mptr) == false)
goto clean;
} else if (read_class(&mptr) == false)
goto clean;
d->p = mptr.p;
if ((mptr_str = vector_str_get_flat(&mptr.vec, &len)) == NULL)
goto clean;
if (vector_str_push(&d->vec, mptr_str, len) == false)
goto clean;
if (VEC_PUSH_STR(&d->vec, "::*") == false)
goto clean;
rtn = true;
clean:
free(mptr_str);
dest_demangle_data(&mptr);
return (rtn);
}
static bool
read_op(struct demangle_data *d)
{
if (d == NULL)
return (false);
assert(d->p != NULL && "d->p (org str) is NULL");
switch (SIMPLE_HASH(*(d->p), *(d->p+1))) {
case SIMPLE_HASH('m', 'l') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator*"));
case SIMPLE_HASH('d', 'v') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator/"));
case SIMPLE_HASH('m', 'd') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator%"));
case SIMPLE_HASH('p', 'l') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator+"));
case SIMPLE_HASH('m', 'i') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator-"));
case SIMPLE_HASH('l', 's') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator<<"));
case SIMPLE_HASH('r', 's') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator>>"));
case SIMPLE_HASH('e', 'q') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator=="));
case SIMPLE_HASH('n', 'e') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator!="));
case SIMPLE_HASH('l', 't') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator<"));
case SIMPLE_HASH('g', 't') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator>"));
case SIMPLE_HASH('l', 'e') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator<="));
case SIMPLE_HASH('g', 'e') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator>="));
case SIMPLE_HASH('a', 'd') :
d->p += 2;
if (*d->p == 'v') {
++d->p;
return (VEC_PUSH_STR(&d->vec, "operator/="));
} else
return (VEC_PUSH_STR(&d->vec, "operator&"));
case SIMPLE_HASH('o', 'r') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator|"));
case SIMPLE_HASH('e', 'r') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator^"));
case SIMPLE_HASH('a', 'a') :
d->p += 2;
if (*d->p == 'd') {
++d->p;
return (VEC_PUSH_STR(&d->vec, "operator&="));
} else
return (VEC_PUSH_STR(&d->vec, "operator&&"));
case SIMPLE_HASH('o', 'o') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator||"));
case SIMPLE_HASH('n', 't') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator!"));
case SIMPLE_HASH('c', 'o') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator~"));
case SIMPLE_HASH('p', 'p') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator++"));
case SIMPLE_HASH('m', 'm') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator--"));
case SIMPLE_HASH('a', 's') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator="));
case SIMPLE_HASH('r', 'f') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator->"));
case SIMPLE_HASH('a', 'p') :
/* apl */
if (*(d->p + 2) != 'l')
return (false);
d->p += 3;
return (VEC_PUSH_STR(&d->vec, "operator+="));
case SIMPLE_HASH('a', 'm') :
d->p += 2;
if (*d->p == 'i') {
++d->p;
return (VEC_PUSH_STR(&d->vec, "operator-="));
} else if (*d->p == 'u') {
++d->p;
return (VEC_PUSH_STR(&d->vec, "operator*="));
} else if (*d->p == 'd') {
++d->p;
return (VEC_PUSH_STR(&d->vec, "operator%="));
}
return (false);
case SIMPLE_HASH('a', 'l') :
/* als */
if (*(d->p + 2) != 's')
return (false);
d->p += 3;
return (VEC_PUSH_STR(&d->vec, "operator<<="));
case SIMPLE_HASH('a', 'r') :
/* ars */
if (*(d->p + 2) != 's')
return (false);
d->p += 3;
return (VEC_PUSH_STR(&d->vec, "operator>>="));
case SIMPLE_HASH('a', 'o') :
/* aor */
if (*(d->p + 2) != 'r')
return (false);
d->p += 3;
return (VEC_PUSH_STR(&d->vec, "operator|="));
case SIMPLE_HASH('a', 'e') :
/* aer */
if (*(d->p + 2) != 'r')
return (false);
d->p += 3;
return (VEC_PUSH_STR(&d->vec, "operator^="));
case SIMPLE_HASH('c', 'm') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator,"));
case SIMPLE_HASH('r', 'm') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator->*"));
case SIMPLE_HASH('c', 'l') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "()"));
case SIMPLE_HASH('v', 'c') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "[]"));
case SIMPLE_HASH('n', 'w') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator new()"));
case SIMPLE_HASH('d', 'l') :
d->p += 2;
return (VEC_PUSH_STR(&d->vec, "operator delete()"));
case SIMPLE_HASH('o', 'p') :
/* __op<TO_TYPE>__<FROM_TYPE> */
d->p += 2;
d->type = ENCODE_OP_USER;
return (read_op_user(d));
case SIMPLE_HASH('t', 'f') :
d->p += 2;
d->type = ENCODE_OP_TF;
if (read_type(d) == false)
return (false);
return (VEC_PUSH_STR(&d->vec, " type_info function"));
case SIMPLE_HASH('t', 'i') :
d->p += 2;
d->type = ENCODE_OP_TI;
if (read_type(d) == false)
return (false);
return (VEC_PUSH_STR(&d->vec, " type_info node"));
default :
return (false);
};
}
static bool
read_op_user(struct demangle_data *d)
{
struct demangle_data from, to;
size_t from_len, to_len;
bool rtn;
char *from_str, *to_str;
if (d == NULL)
return (false);
if (init_demangle_data(&from) == false)
return (false);
rtn = false;
from_str = NULL;
to_str = NULL;
if (init_demangle_data(&to) == false)
goto clean;
to.p = d->p;
if (*to.p == 'Q') {
++to.p;
if (read_qual_name(&to) == false)
goto clean;
/* pop last '::' */
if (vector_str_pop(&to.vec) == false)
goto clean;
} else {
if (read_class(&to) == false)
goto clean;
/* skip '__' */
to.p += 2;
}
if ((to_str = vector_str_get_flat(&to.vec, &to_len)) == NULL)
goto clean;
from.p = to.p;
if (*from.p == 'Q') {
++from.p;
if (read_qual_name(&from) == false)
goto clean;
/* pop last '::' */
if (vector_str_pop(&from.vec) == false)
goto clean;
} else if (read_class(&from) == false)
goto clean;
if ((from_str = vector_str_get_flat(&from.vec, &from_len)) == NULL)
goto clean;
if (vector_str_push(&d->vec, from_str, from_len) == false)
goto clean;
if (VEC_PUSH_STR(&d->vec, "::operator ") == false)
goto clean;
if (vector_str_push(&d->vec, to_str, to_len) == false)
goto clean;
rtn = VEC_PUSH_STR(&d->vec, "()");
clean:
free(to_str);
free(from_str);
dest_demangle_data(&to);
dest_demangle_data(&from);
return (rtn);
}
/* single digit + class names */
static bool
read_qual_name(struct demangle_data *d)
{
int i;
char num;
if (d == NULL)
return (false);
assert(d->p != NULL && "d->p (org str) is NULL");
assert(*d->p > 48 && *d->p < 58 && "*d->p not in ASCII numeric range");
num = *d->p - 48;
assert(num > 0);
++d->p;
for (i = 0; i < num ; ++i) {
if (read_class(d) == false)
return (false);
if (VEC_PUSH_STR(&d->vec, "::") == false)
return (false);
}
if (*d->p != '\0')
d->p = d->p + 2;
return (true);
}
/* Return -1 at fail, 0 at success, and 1 at end */
static int
read_subst(struct demangle_data *d)
{
size_t idx;
char *str;
if (d == NULL)
return (-1);
idx = strtol(d->p + 1, &str, 10);
if (idx == 0 && (errno == EINVAL || errno == ERANGE))
return (-1);
assert(idx > 0);
assert(str != NULL);
d->p = str;
if (VEC_PUSH_STR(&d->vec, d->arg.container[idx - 1]) == false)
return (-1);
if (VEC_PUSH_STR(&d->arg, d->arg.container[idx - 1]) == false)
return (-1);
if (*d->p == '\0')
return (1);
return (0);
}
static int
read_subst_iter(struct demangle_data *d)
{
int i;
size_t idx;
char repeat;
char *str;
if (d == NULL)
return (-1);
++d->p;
assert(*d->p > 48 && *d->p < 58 && "*d->p not in ASCII numeric range");
repeat = *d->p - 48;
assert(repeat > 1);
++d->p;
idx = strtol(d->p, &str, 10);
if (idx == 0 && (errno == EINVAL || errno == ERANGE))
return (-1);
assert(idx > 0);
assert(str != NULL);
d->p = str;
for (i = 0; i < repeat ; ++i) {
if (VEC_PUSH_STR(&d->vec, d->arg.container[idx - 1]) == false)
return (-1);
if (VEC_PUSH_STR(&d->arg, d->arg.container[idx - 1]) == false)
return (-1);
if (i != repeat - 1 &&
VEC_PUSH_STR(&d->vec, ", ") == false)
return (-1);
}
if (*d->p == '\0')
return (1);
return (0);
}
static bool
read_type(struct demangle_data *d)
{
if (d == NULL)
return (false);
assert(d->p != NULL && "d->p (org str) is NULL");
while (*d->p == 'U' || *d->p == 'C' || *d->p == 'V' || *d->p == 'S' ||
*d->p == 'P' || *d->p == 'R' || *d->p == 'A' || *d->p == 'F' ||
*d->p == 'M') {
switch (*d->p) {
case 'U' :
++d->p;
if (VEC_PUSH_STR(&d->vec, "unsigned ") == false)
return (false);
break;
case 'C' :
++d->p;
if (*d->p == 'P')
d->cnst = true;
else {
if (VEC_PUSH_STR(&d->vec, "const ") ==
false)
return (false);
}
break;
case 'V' :
++d->p;
if (VEC_PUSH_STR(&d->vec, "volatile ") == false)
return (false);
break;
case 'S' :
++d->p;
if (VEC_PUSH_STR(&d->vec, "signed ") == false)
return (false);
break;
case 'P' :
++d->p;
if (*d->p == 'F')
return (read_func_ptr(d));
else
d->ptr = true;
break;
case 'R' :
++d->p;
d->ref = true;
break;
case 'F' :
break;
case 'A' :
++d->p;
if (read_array(d) == false)
return (false);
break;
case 'M' :
++d->p;
if (read_memptr(d) == false)
return (false);
break;
default :
break;
}
}
if (ELFTC_ISDIGIT(*d->p))
return (read_class(d));
switch (*d->p) {
case 'Q' :
++d->p;
return (read_qual_name(d));
case 'v' :
++d->p;
return (VEC_PUSH_STR(&d->vec, "void"));
case 'b':
++d->p;
return(VEC_PUSH_STR(&d->vec, "bool"));
case 'c' :
++d->p;
return (VEC_PUSH_STR(&d->vec, "char"));
case 's' :
++d->p;
return (VEC_PUSH_STR(&d->vec, "short"));
case 'i' :
++d->p;
return (VEC_PUSH_STR(&d->vec, "int"));
case 'l' :
++d->p;
return (VEC_PUSH_STR(&d->vec, "long"));
case 'f' :
++d->p;
return (VEC_PUSH_STR(&d->vec, "float"));
case 'd':
++d->p;
return (VEC_PUSH_STR(&d->vec, "double"));
case 'r':
++d->p;
return (VEC_PUSH_STR(&d->vec, "long double"));
case 'e':
++d->p;
return (VEC_PUSH_STR(&d->vec, "..."));
case 'w':
++d->p;
return (VEC_PUSH_STR(&d->vec, "wchar_t"));
case 'x':
++d->p;
return (VEC_PUSH_STR(&d->vec, "long long"));
default:
return (false);
};
/* NOTREACHED */
return (false);
}
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