#include "filter.h"
#include "debug.h"
-#define complain(die, format, ...) \
+#define complain(die, format, ...) \
debug(DEBUG_FUNCTION, "%s() die '%s' @ 0x%lx: " format, \
- __func__, dwarf_diename(die), dwarf_dieoffset(die), \
- ##__VA_ARGS__)
+ __func__, dwarf_diename(die), dwarf_dieoffset(die), \
+ ##__VA_ARGS__)
-#define NEXT_SIBLING(die) \
- int res = dwarf_siblingof(die, die); \
+#define NEXT_SIBLING(die) \
+ int res = dwarf_siblingof(die, die); \
if (res == 0) continue; /* sibling exists */ \
if (res < 0) return false; /* error */ \
break /* no sibling exists */
-static struct arg_type_info* get_type(int* newly_allocated_info,
- Dwarf_Die* type_die, struct protolib* plib,
- struct dict* type_dieoffset_hash);
+static struct arg_type_info *get_type(int *newly_allocated_info,
+ Dwarf_Die *type_die,
+ struct protolib *plib,
+ struct dict *type_dieoffset_hash);
// debugging functions to dump types that I already parsed
#ifdef DUMP_PROTOTYPES
-static bool _dump_ltrace_tree(const struct arg_type_info* info, int indent)
+static bool _dump_ltrace_tree(const struct arg_type_info *info, int indent)
{
if (indent > 7) {
fprintf(stderr, "%*s%p ...\n", indent*4, "", (void*)info);
break;
case ARGTYPE_ARRAY:
- fprintf(stderr, "%*s%p array. elements not printed\n", indent*4, "",
- (void*)info);
+ fprintf(stderr, "%*s%p array. elements not printed\n", indent*4,
+ "", (void*)info);
break;
case ARGTYPE_POINTER:
- fprintf(stderr, "%*s%p pointer to...\n", indent*4, "", (void*)info);
+ fprintf(stderr, "%*s%p pointer to...\n", indent*4,
+ "", (void*)info);
_dump_ltrace_tree(info->u.ptr_info.info, indent+1);
break;
case ARGTYPE_STRUCT:
- fprintf(stderr, "%*s%p struct...\n", indent*4, "", (void*)info);
+ fprintf(stderr, "%*s%p struct...\n", indent*4,
+ "", (void*)info);
struct struct_field
{
struct arg_type_info *info;
int own_info;
- }* elements = (struct struct_field*)info->u.entries.data;
+ } *elements = (struct struct_field*)info->u.entries.data;
unsigned int i;
for(i=0; i<info->u.entries.size; i++)
_dump_ltrace_tree(elements[i].info, indent+1);
break;
default:
- fprintf(stderr, "%*s%p unknown type\n", indent*4, "", (void*)info);
+ fprintf(stderr, "%*s%p unknown type\n", indent*4,
+ "", (void*)info);
return false;;
}
return true;
}
-static bool dump_ltrace_tree(const struct arg_type_info* info)
+static bool dump_ltrace_tree(const struct arg_type_info *info)
{
return _dump_ltrace_tree(info, 0);
}
// pulls a numerical value out of a particular attribute in a die. Returns true
// if successful. The result is returned in *result. Note that this is cast to
// (uint64_t), regardless of the actual type of the input
-static bool get_die_numeric(uint64_t* result,
- Dwarf_Die *die, unsigned int attr_name)
+static bool get_die_numeric(uint64_t *result,
+ Dwarf_Die *die, unsigned int attr_name)
{
Dwarf_Attribute attr ;
union {
- Dwarf_Word udata;
- Dwarf_Sword sdata;
- Dwarf_Addr addr;
- bool flag;
+ Dwarf_Word udata;
+ Dwarf_Sword sdata;
+ Dwarf_Addr addr;
+ bool flag;
} u;
if (dwarf_attr(die, attr_name, &attr) == NULL)
unsigned int form = dwarf_whatform(&attr);
-#define PROCESS_NUMERIC(type) \
+#define PROCESS_NUMERIC(type) \
if (dwarf_form ## type(&attr, &u.type) != 0) \
- return false; \
- *result = (uint64_t)u.type; \
+ return false; \
+ *result = (uint64_t)u.type; \
return true
PROCESS_NUMERIC(flag);
default:
- complain(die, "Unknown numeric form %d for attr_name: %d", form, attr_name);
+ complain(die, "Unknown numeric form %d for attr_name: %d",
+ form, attr_name);
return false;
}
#undef PROCESS_NUMERIC
}
-static bool get_integer_base_type(enum arg_type* type, int byte_size, bool is_signed)
+static bool get_integer_base_type(enum arg_type *type, int byte_size,
+ bool is_signed)
{
- switch (byte_size) {
- case sizeof(char):
+ // not using a switch() here because sizeof(int) == sizeof(long) on some
+ // architectures, and removing that case for those arches is a pain
+ if (byte_size == sizeof(char)) {
*type = ARGTYPE_CHAR;
return true;
+ }
- case sizeof(short):
+ if (byte_size == sizeof(short)) {
*type = is_signed ? ARGTYPE_SHORT : ARGTYPE_USHORT;
return true;
+ }
- case sizeof(int):
+ if (byte_size == sizeof(int)) {
*type = is_signed ? ARGTYPE_INT : ARGTYPE_UINT;
return true;
+ }
- case sizeof(long):
+ if (byte_size == sizeof(long)) {
*type = is_signed ? ARGTYPE_LONG : ARGTYPE_ULONG;
return true;
-
- default:
- return false;
}
+
+ return false;
}
// returns an ltrace ARGTYPE_XXX base type from the given die. If we dont
// support a particular type (or an error occurred), I regturn ARGTYPE_VOID
-static enum arg_type get_base_type(Dwarf_Die* die)
+static enum arg_type get_base_type(Dwarf_Die *die)
{
- int64_t encoding;
- if(!get_die_numeric((uint64_t*)&encoding, die, DW_AT_encoding))
+ uint64_t encoding;
+ if (!get_die_numeric(&encoding, die, DW_AT_encoding))
return ARGTYPE_VOID;
if (encoding == DW_ATE_void)
if (encoding == DW_ATE_signed_char || encoding == DW_ATE_unsigned_char)
return ARGTYPE_CHAR;
- uint64_t byte_size;
- if (!get_die_numeric(&byte_size, die, DW_AT_byte_size))
- return ARGTYPE_VOID;
+ uint64_t byte_size;
+ if (!get_die_numeric(&byte_size, die, DW_AT_byte_size))
+ return ARGTYPE_VOID;
if (encoding == DW_ATE_signed ||
- encoding == DW_ATE_unsigned ||
- encoding == DW_ATE_boolean) {
+ encoding == DW_ATE_unsigned ||
+ encoding == DW_ATE_boolean) {
bool is_signed = (encoding == DW_ATE_signed);
enum arg_type type;
- if(!get_integer_base_type(&type, (int)byte_size, is_signed)) {
- complain(die, "Unknown integer base type. Using 'void'");
+ if (!get_integer_base_type(&type, (int)byte_size, is_signed)) {
+ complain(die, "Unknown integer base type. "
+ "Using 'void'");
return ARGTYPE_VOID;
}
return type;
return ARGTYPE_DOUBLE;
default:
- // things like long doubles. ltrace has no support yet, so I just
- // say "void"
+ // things like long doubles. ltrace has no support yet,
+ // so I just say "void"
return ARGTYPE_VOID;
}
}
return ARGTYPE_DOUBLE;
default:
- // things like long doubles. ltrace has no support yet, so I just
- // say "void"
+ // things like long doubles. ltrace has no support yet,
+ // so I just say "void"
return ARGTYPE_VOID;
}
}
return ARGTYPE_VOID;
}
-static bool get_type_die(Dwarf_Die* type_die, Dwarf_Die* die)
+static bool get_type_die(Dwarf_Die *type_die, Dwarf_Die *die)
{
Dwarf_Attribute attr;
return
// type_dieoffset_hash dictionary callbacks
-static size_t dwarf_die_hash(const void* x)
+static size_t dwarf_die_hash(const void *x)
{
return *(const Dwarf_Off*)x;
}
-static int dwarf_die_eq(const void* a, const void* b)
+static int dwarf_die_eq(const void *a, const void *b)
{
return *(const Dwarf_Off*)a == *(const Dwarf_Off*)b;
}
// returns a newly-allocated art_type_info*, or NULL on error
-static struct arg_type_info* get_enum(Dwarf_Die* parent, struct dict* type_dieoffset_hash)
+static struct arg_type_info *get_enum(Dwarf_Die *parent,
+ struct dict *type_dieoffset_hash)
{
-#define CLEANUP_AND_RETURN_ERROR(ret) do { \
- if(dupkey != NULL) \
- free((void*)dupkey); \
- if(value != NULL) { \
- value_destroy(value); \
- free(value); \
- } \
- if(lens != NULL ) { \
- lens_destroy(&lens->super); \
- free(lens); \
- } \
- if(result != NULL) { \
- type_destroy(result); \
- free(result); \
- } \
- dict_erase (type_dieoffset_hash, &die_offset, NULL, NULL, NULL); \
- dict_insert(type_dieoffset_hash, &die_offset, \
- &(struct arg_type_info*){type_get_simple(ARGTYPE_VOID)}); \
- return ret; \
- } while(0)
-
- struct arg_type_info* result = NULL;
- struct enum_lens* lens = NULL;
- const char* dupkey = NULL;
- struct value* value = NULL;
+#define CLEANUP_AND_RETURN_ERROR(ret) do { \
+ if (dupkey != NULL) \
+ free((void*)dupkey); \
+ if (value != NULL) { \
+ value_destroy(value); \
+ free(value); \
+ } \
+ if (lens != NULL) { \
+ lens_destroy(&lens->super); \
+ free(lens); \
+ } \
+ if (result != NULL) { \
+ type_destroy(result); \
+ free(result); \
+ } \
+ dict_erase (type_dieoffset_hash, &die_offset, NULL, \
+ NULL, NULL); \
+ dict_insert(type_dieoffset_hash, &die_offset, \
+ &(struct arg_type_info*){ \
+ type_get_simple(ARGTYPE_VOID)}); \
+ return ret; \
+ } while (0)
+
+ struct arg_type_info *result = NULL;
+ struct enum_lens *lens = NULL;
+ const char *dupkey = NULL;
+ struct value *value = NULL;
Dwarf_Off die_offset = dwarf_dieoffset(parent);
CLEANUP_AND_RETURN_ERROR(NULL);
}
- dict_insert(type_dieoffset_hash, &die_offset, &result);
+ if (dict_insert(type_dieoffset_hash, &die_offset, &result) != 0) {
+ complain(parent, "Couldn't insert into cache dict");
+ CLEANUP_AND_RETURN_ERROR(NULL);
+ }
uint64_t byte_size;
if (!get_die_numeric(&byte_size, parent, DW_AT_byte_size)) {
// No byte size given, assume 'int'
result->type = ARGTYPE_INT;
} else {
- if(!get_integer_base_type(&result->type, (int)byte_size, true)) {
- complain(parent, "Unknown integer base type. Using 'int'");
+ if (!get_integer_base_type(&result->type,
+ (int)byte_size, true)) {
+ complain(parent, "Unknown integer base type. "
+ "Using 'int'");
result->type = ARGTYPE_INT;
}
}
CLEANUP_AND_RETURN_ERROR(NULL);
}
lens_init_enum(lens);
- result->lens = &lens->super;
+ result->lens = &lens->super;
result->own_lens = 1;
Dwarf_Die die;
}
- while(1) {
+ while (1) {
complain(&die, "enum element: 0x%02x/'%s'", dwarf_tag(&die),
- dwarf_diename(&die));
+ dwarf_diename(&die));
dupkey = NULL;
- value = NULL;
+ value = NULL;
if (dwarf_tag(&die) != DW_TAG_enumerator) {
- complain(&die, "Enums can have ONLY DW_TAG_enumerator elements");
+ complain(&die, "Enums can have ONLY DW_TAG_enumerator "
+ "elements");
CLEANUP_AND_RETURN_ERROR(NULL);
}
if (!dwarf_hasattr(&die, DW_AT_const_value)) {
- complain(&die, "Enums MUST have DW_AT_const_value values");
+ complain(&die, "Enums MUST have DW_AT_const_value "
+ "values");
CLEANUP_AND_RETURN_ERROR(NULL);
}
- const char* key = dwarf_diename(&die);
+ const char *key = dwarf_diename(&die);
if (key == NULL) {
complain(&die, "Enums must have a DW_AT_name key");
CLEANUP_AND_RETURN_ERROR(NULL);
CLEANUP_AND_RETURN_ERROR(NULL);
}
- value_init_detached(value, NULL, type_get_simple(result->type), 0);
+ value_init_detached(value, NULL, type_get_simple(result->type),
+ 0);
uint64_t enum_value;
if (!get_die_numeric(&enum_value, &die, DW_AT_const_value)) {
complain(&die, "Couldn't get enum value");
}
// returns a newly-allocated art_type_info*, or NULL on error
-static struct arg_type_info* get_array( Dwarf_Die* parent, struct protolib* plib,
- struct dict* type_dieoffset_hash)
+static struct arg_type_info *get_array(Dwarf_Die *parent,
+ struct protolib *plib,
+ struct dict *type_dieoffset_hash)
{
-#define CLEANUP_AND_RETURN_ERROR(ret) do { \
- if(length != NULL) { \
- expr_destroy(length); \
- free(length); \
- } \
- if(array_type != NULL && newly_allocated_array_type) { \
- type_destroy(array_type); \
- free(array_type); \
- } \
- if(result != NULL) { \
- type_destroy(result); \
- free(result); \
- } \
- dict_erase (type_dieoffset_hash, &die_offset, NULL, NULL, NULL); \
- dict_insert(type_dieoffset_hash, &die_offset, \
- &(struct arg_type_info*){type_get_simple(ARGTYPE_VOID)}); \
- return ret; \
- } while(0)
-
-
- struct arg_type_info* result = NULL;
- struct expr_node* length = NULL;
- struct arg_type_info* array_type = NULL;
- int newly_allocated_array_type = 0;
+#define CLEANUP_AND_RETURN_ERROR(ret) do { \
+ if (length != NULL) { \
+ expr_destroy(length); \
+ free(length); \
+ } \
+ if (array_type != NULL && newly_allocated_array_type) { \
+ type_destroy(array_type); \
+ free(array_type); \
+ } \
+ if (result != NULL) { \
+ type_destroy(result); \
+ free(result); \
+ } \
+ dict_erase (type_dieoffset_hash, &die_offset, \
+ NULL, NULL, NULL); \
+ dict_insert(type_dieoffset_hash, &die_offset, \
+ &(struct arg_type_info*){ \
+ type_get_simple(ARGTYPE_VOID)}); \
+ return ret; \
+ } while (0)
+
+
+ struct arg_type_info *result = NULL;
+ struct expr_node *length = NULL;
+ struct arg_type_info *array_type = NULL;
+ int newly_allocated_array_type = 0;
Dwarf_Off die_offset = dwarf_dieoffset(parent);
CLEANUP_AND_RETURN_ERROR(NULL);
}
- dict_insert(type_dieoffset_hash, &die_offset, &result);
+ if (dict_insert(type_dieoffset_hash, &die_offset, &result) != 0) {
+ complain(parent, "Couldn't insert into cache dict");
+ CLEANUP_AND_RETURN_ERROR(NULL);
+ }
array_type = get_type(&newly_allocated_array_type,
- &type_die, plib, type_dieoffset_hash);
- if( array_type == NULL ) {
+ &type_die, plib, type_dieoffset_hash);
+ if (array_type == NULL) {
complain(parent, "Couldn't figure out array's type");
CLEANUP_AND_RETURN_ERROR(NULL);
}
Dwarf_Die subrange;
if (dwarf_child(parent, &subrange) != 0) {
complain(parent,
- "Array must have a DW_TAG_subrange_type child, but has none");
+ "Array must have a DW_TAG_subrange_type child, "
+ "but has none");
CLEANUP_AND_RETURN_ERROR(NULL);
}
Dwarf_Die next_subrange;
if (dwarf_siblingof(&subrange, &next_subrange) <= 0) {
complain(parent,
- "Array must have exactly one DW_TAG_subrange_type child");
+ "Array must have exactly one DW_TAG_subrange_type "
+ "child");
CLEANUP_AND_RETURN_ERROR(NULL);
}
if (dwarf_hasattr(&subrange, DW_AT_lower_bound)) {
uint64_t lower_bound;
- if (!get_die_numeric(&lower_bound, &subrange, DW_AT_lower_bound)) {
+ if (!get_die_numeric(&lower_bound, &subrange,
+ DW_AT_lower_bound)) {
complain(parent, "Couldn't read lower bound");
CLEANUP_AND_RETURN_ERROR(NULL);
}
if (lower_bound != 0) {
complain(parent,
- "Array subrange has a nonzero lower bound. Don't know what to do");
+ "Array subrange has a nonzero lower bound. "
+ "Don't know what to do");
CLEANUP_AND_RETURN_ERROR(NULL);
}
}
uint64_t N;
if (!dwarf_hasattr(&subrange, DW_AT_upper_bound)) {
- // no upper bound is defined. This is probably a variable-width array,
- // and I don't know how long it is. Let's say 0 to be safe
+ // no upper bound is defined. This is probably a variable-width
+ // array, and I don't know how long it is. Let's say 0 to be
+ // safe
N = 0;
}
else
N++;
}
- // I'm not checking the subrange type. It should be some sort of integer,
- // and I don't know what it would mean for it to be something else
+ // I'm not checking the subrange type. It should be some sort of
+ // integer, and I don't know what it would mean for it to be something
+ // else
length = calloc(1, sizeof(struct expr_node));
if (length == NULL) {
complain(&subrange, "Couldn't alloc length expr");
expr_init_const_word(length, N, type_get_simple(ARGTYPE_INT), 0);
type_init_array(result, array_type, newly_allocated_array_type,
- length, 1);
+ length, 1);
return result;
#undef CLEANUP_AND_RETURN_ERROR
}
// returns a newly-allocated art_type_info*, or NULL on error
-static struct arg_type_info* get_structure(Dwarf_Die* parent, struct protolib* plib,
- struct dict* type_dieoffset_hash)
+static struct arg_type_info *get_structure(Dwarf_Die *parent,
+ struct protolib *plib,
+ struct dict *type_dieoffset_hash)
{
-#define CLEANUP_AND_RETURN_ERROR(ret) do { \
- if(member_type != NULL && newly_allocated_member_type) { \
- type_destroy(member_type); \
- free(member_type); \
- } \
- if(result != NULL) { \
- type_destroy(result); \
- free(result); \
- } \
- dict_erase (type_dieoffset_hash, &die_offset, NULL, NULL, NULL); \
- dict_insert(type_dieoffset_hash, &die_offset, \
- &(struct arg_type_info*){type_get_simple(ARGTYPE_VOID)}); \
- return ret; \
- } while(0)
-
-
- struct arg_type_info* result = NULL;
- struct arg_type_info* member_type = NULL;
- int newly_allocated_member_type = 0;
+#define CLEANUP_AND_RETURN_ERROR(ret) do { \
+ if (member_type != NULL && newly_allocated_member_type) { \
+ type_destroy(member_type); \
+ free(member_type); \
+ } \
+ if (result != NULL) { \
+ type_destroy(result); \
+ free(result); \
+ } \
+ dict_erase (type_dieoffset_hash, &die_offset, \
+ NULL, NULL, NULL); \
+ dict_insert(type_dieoffset_hash, &die_offset, \
+ &(struct arg_type_info*){ \
+ type_get_simple(ARGTYPE_VOID)}); \
+ return ret; \
+ } while (0)
+
+
+ struct arg_type_info *result = NULL;
+ struct arg_type_info *member_type = NULL;
+ int newly_allocated_member_type = 0;
Dwarf_Off die_offset = dwarf_dieoffset(parent);
CLEANUP_AND_RETURN_ERROR(NULL);
}
type_init_struct(result);
- dict_insert(type_dieoffset_hash, &die_offset, &result);
+ if (dict_insert(type_dieoffset_hash, &die_offset, &result) != 0) {
+ complain(parent, "Couldn't insert into cache dict");
+ CLEANUP_AND_RETURN_ERROR(NULL);
+ }
Dwarf_Die die;
if (dwarf_child(parent, &die) != 0) {
return result;
}
- while(1) {
- member_type = NULL;
+ while (1) {
+ member_type = NULL;
newly_allocated_member_type = 0;
complain(&die, "member: 0x%02x", dwarf_tag(&die));
}
member_type = get_type(&newly_allocated_member_type,
- &type_die, plib, type_dieoffset_hash);
- if(member_type == NULL) {
+ &type_die, plib, type_dieoffset_hash);
+ if (member_type == NULL) {
complain(&die, "Couldn't parse type from DWARF data");
CLEANUP_AND_RETURN_ERROR(NULL);
}
- type_struct_add(result, member_type, newly_allocated_member_type);
+ if (type_struct_add(result, member_type,
+ newly_allocated_member_type) != 0) {
+ complain(&die, "Couldn't add type to struct");
+ CLEANUP_AND_RETURN_ERROR(NULL);
+ }
NEXT_SIBLING(&die);
}
// Reads the type in the die and returns the corresponding arg_type_info*. If
// this was newly allocated on the heap, *newly_allocated_info = true. If an
// error occurred, returns NULL
-static struct arg_type_info* get_type(int* newly_allocated_result,
- Dwarf_Die* type_die, struct protolib* plib,
- struct dict* type_dieoffset_hash)
+static struct arg_type_info *get_type(int *newly_allocated_result,
+ Dwarf_Die *type_die,
+ struct protolib *plib,
+ struct dict *type_dieoffset_hash)
{
-#define CLEANUP_AND_RETURN_ERROR(ret) do { \
- if(pointee != NULL && newly_allocated_pointee) { \
- type_destroy(pointee); \
- free(pointee); \
- } \
- if(result != NULL && *newly_allocated_result) { \
- type_destroy(result); \
- free(result); \
- } \
- dict_erase (type_dieoffset_hash, &die_offset, NULL, NULL, NULL); \
- dict_insert(type_dieoffset_hash, &die_offset, \
- &(struct arg_type_info*){type_get_simple(ARGTYPE_VOID)}); \
- return ret; \
+#define CLEANUP_AND_RETURN_ERROR(ret) do { \
+ if (pointee != NULL && newly_allocated_pointee) { \
+ type_destroy(pointee); \
+ free(pointee); \
+ } \
+ if (result != NULL && *newly_allocated_result) { \
+ type_destroy(result); \
+ free(result); \
+ } \
+ dict_erase (type_dieoffset_hash, &die_offset, \
+ NULL, NULL, NULL); \
+ dict_insert(type_dieoffset_hash, &die_offset, \
+ &(struct arg_type_info*){ \
+ type_get_simple(ARGTYPE_VOID)}); \
+ return ret; \
+ } while (0)
+
+#define DICT_INSERT_AND_CHECK(type_dieoffset_hash, die_offset, result) \
+ do { \
+ if (dict_insert(type_dieoffset_hash, \
+ die_offset, result) != 0) { \
+ complain(type_die, \
+ "Couldn't insert into cache dict"); \
+ CLEANUP_AND_RETURN_ERROR(NULL); \
+ } \
} while(0)
- struct arg_type_info* result = NULL;
- struct arg_type_info* pointee = NULL;
- int newly_allocated_pointee = 0;
+ struct arg_type_info *result = NULL;
+ struct arg_type_info *pointee = NULL;
+ int newly_allocated_pointee = 0;
Dwarf_Off die_offset = dwarf_dieoffset(type_die);
- // by default, we say we allocated nothing. I set this to true later, when I
- // allocate memory
- *newly_allocated_result = 0;
+ // by default, we say we allocated nothing. I set this to true later,
+ // when I allocate memory
+ *newly_allocated_result = 0;
- struct arg_type_info** found_type = dict_find(type_dieoffset_hash, &die_offset);
+ struct arg_type_info **found_type = dict_find(type_dieoffset_hash,
+ &die_offset);
if (found_type != NULL) {
complain(type_die, "Read pre-computed type");
return *found_type;
}
- const char* type_name = dwarf_diename(type_die);
+ const char *type_name = dwarf_diename(type_die);
if (type_name != NULL) {
- struct named_type* already_defined_type =
+ struct named_type *already_defined_type =
protolib_lookup_type(plib, type_name, true);
if (already_defined_type != NULL) {
complain(type_die,
- "Type '%s' defined in a .conf file. Using that instead of DWARF",
- type_name);
+ "Type '%s' defined in a .conf file. "
+ "Using that instead of DWARF",
+ type_name);
return already_defined_type->info;
}
}
case DW_TAG_base_type:
complain(type_die, "Storing base type");
result = type_get_simple(get_base_type(type_die));
- dict_insert(type_dieoffset_hash, &die_offset, &result);
+ DICT_INSERT_AND_CHECK(type_dieoffset_hash, &die_offset, &result);
return result;
case DW_TAG_subroutine_type:
case DW_TAG_inlined_subroutine:
- // function pointers are stored as void*. If ltrace tries to dereference
- // these, it'll get a segfault
+ // function pointers are stored as void*. If ltrace tries to
+ // dereference these, it'll get a segfault
complain(type_die, "Storing subroutine type");
result = type_get_simple(ARGTYPE_VOID);
- dict_insert(type_dieoffset_hash, &die_offset, &result);
+ DICT_INSERT_AND_CHECK(type_dieoffset_hash, &die_offset, &result);
return result;
case DW_TAG_pointer_type:
if (!get_type_die(&next_die, type_die)) {
- // the pointed-to type isn't defined, so I report a void*
+ // the pointed-to type isn't defined, so I report a
+ // void*
complain(type_die, "Storing void-pointer type");
result = type_get_voidptr();
- dict_insert(type_dieoffset_hash, &die_offset, &result);
+ DICT_INSERT_AND_CHECK(type_dieoffset_hash, &die_offset, &result);
return result;
}
complain(type_die, "alloc error");
CLEANUP_AND_RETURN_ERROR(NULL);
}
- dict_insert(type_dieoffset_hash, &die_offset, &result);
+ DICT_INSERT_AND_CHECK(type_dieoffset_hash, &die_offset, &result);
pointee = get_type(&newly_allocated_pointee,
- &next_die, plib, type_dieoffset_hash);
- if(pointee == NULL)
+ &next_die, plib, type_dieoffset_hash);
+ if (pointee == NULL)
CLEANUP_AND_RETURN_ERROR(NULL);
type_init_pointer(result, pointee, newly_allocated_pointee);
*newly_allocated_result = 1;
result = get_structure(type_die, plib, type_dieoffset_hash);
- if(result == NULL)
+ if (result == NULL)
CLEANUP_AND_RETURN_ERROR(NULL);
return result;
complain(type_die, "Storing const/typedef type");
result = get_type(newly_allocated_result, &next_die,
- plib, type_dieoffset_hash);
- if(result == NULL)
+ plib, type_dieoffset_hash);
+ if (result == NULL)
CLEANUP_AND_RETURN_ERROR(NULL);
} else {
- // no type. Use 'void'. Normally I'd think this is bogus, but stdio
- // typedefs something to void
+ // no type. Use 'void'. Normally I'd think this is
+ // bogus, but stdio typedefs something to void
result = type_get_simple(ARGTYPE_VOID);
complain(type_die, "Storing void type");
}
- dict_insert(type_dieoffset_hash, &die_offset, &result);
+ DICT_INSERT_AND_CHECK(type_dieoffset_hash, &die_offset, &result);
return result;
case DW_TAG_enumeration_type:
- // We have an enumeration. This has a base type, but has a particular
- // lens to handle the enum
+ // We have an enumeration. This has a base type, but has a
+ // particular lens to handle the enum
*newly_allocated_result = 1;
complain(type_die, "Storing enum int");
result = get_enum(type_die, type_dieoffset_hash);
- if(result == NULL)
+ if (result == NULL)
CLEANUP_AND_RETURN_ERROR(NULL);
return result;
complain(type_die, "Storing array");
result = get_array(type_die, plib, type_dieoffset_hash);
- if(result == NULL)
+ if (result == NULL)
CLEANUP_AND_RETURN_ERROR(NULL);
return result;
case DW_TAG_union_type:
result = type_get_simple(ARGTYPE_VOID);
complain(type_die, "Storing union-as-void type");
- dict_insert(type_dieoffset_hash, &die_offset, &result);
+ DICT_INSERT_AND_CHECK(type_dieoffset_hash, &die_offset, &result);
return result;
default:
- complain(type_die, "Unknown type tag 0x%x. Returning void", dwarf_tag(type_die));
+ complain(type_die, "Unknown type tag 0x%x. Returning void",
+ dwarf_tag(type_die));
result = type_get_simple(ARGTYPE_VOID);
- dict_insert(type_dieoffset_hash, &die_offset, &result);
+ DICT_INSERT_AND_CHECK(type_dieoffset_hash, &die_offset, &result);
return result;
}
+#undef DICT_INSERT_AND_CHECK
#undef CLEANUP_AND_RETURN_ERROR
}
// fills in *proto with a prototype. Returns true on success
-static bool get_prototype( struct prototype* result,
- Dwarf_Die* subroutine, struct protolib* plib,
- struct dict* type_dieoffset_hash)
+static bool get_prototype(struct prototype *result,
+ Dwarf_Die *subroutine, struct protolib *plib,
+ struct dict *type_dieoffset_hash)
{
-#define CLEANUP_AND_RETURN_ERROR(ret) do { \
- if(argument_type != NULL && newly_allocated_argument_type) { \
- type_destroy(argument_type); \
+#define CLEANUP_AND_RETURN_ERROR(ret) do { \
+ if (argument_type != NULL && newly_allocated_argument_type) { \
+ type_destroy(argument_type); \
free(argument_type); \
- } \
+ } \
prototype_destroy(result); \
- return ret; \
- } while(0)
+ return ret; \
+ } while (0)
- struct arg_type_info* argument_type = NULL;
- int newly_allocated_argument_type = 0;
+ struct arg_type_info *argument_type = NULL;
+ int newly_allocated_argument_type = 0;
prototype_init(result);
- // First, look at the return type. This is stored in a DW_AT_type tag in the
- // subroutine DIE. If there is no such tag, this function returns void
+ // First, look at the return type. This is stored in a DW_AT_type tag in
+ // the subroutine DIE. If there is no such tag, this function returns
+ // void
Dwarf_Die return_type_die;
if (!get_type_die(&return_type_die, subroutine)) {
result->return_info = type_get_simple(ARGTYPE_VOID);
} else {
int newly_allocated_return_type;
result->return_info = get_type(&newly_allocated_return_type,
- &return_type_die, plib, type_dieoffset_hash);
- if(result->return_info == NULL) {
+ &return_type_die, plib,
+ type_dieoffset_hash);
+ if (result->return_info == NULL) {
complain(subroutine, "Couldn't get return type");
CLEANUP_AND_RETURN_ERROR(false);
}
return true;
}
- while(1) {
+ while (1) {
if (dwarf_tag(&arg_die) == DW_TAG_formal_parameter) {
complain(&arg_die, "arg: 0x%02x", dwarf_tag(&arg_die));
- argument_type = NULL;
+ argument_type = NULL;
newly_allocated_argument_type = false;
Dwarf_Die type_die;
if (!get_type_die(&type_die, &arg_die)) {
- complain(&arg_die, "Couldn't get the argument type die");
+ complain(&arg_die, "Couldn't get the argument "
+ "type die");
CLEANUP_AND_RETURN_ERROR(false);
}
argument_type = get_type(&newly_allocated_argument_type,
- &type_die, plib, type_dieoffset_hash);
- if(argument_type==NULL) {
- complain(&arg_die, "Couldn't parse arg type from DWARF data");
+ &type_die, plib,
+ type_dieoffset_hash);
+ if (argument_type==NULL) {
+ complain(&arg_die, "Couldn't parse arg "
+ "type from DWARF data");
CLEANUP_AND_RETURN_ERROR(false);
}
struct param param;
- param_init_type(¶m, argument_type, newly_allocated_argument_type);
+ param_init_type(¶m, argument_type,
+ newly_allocated_argument_type);
if (prototype_push_param(result, ¶m) <0) {
- complain(&arg_die, "couldn't add argument to the prototype");
+ complain(&arg_die, "couldn't add argument to "
+ "the prototype");
CLEANUP_AND_RETURN_ERROR(false);
}
#undef CLEANUP_AND_RETURN_ERROR
}
-static bool import_subprogram(struct protolib* plib, struct library* lib,
- struct dict* type_dieoffset_hash,
- Dwarf_Die* die)
+static bool import_subprogram_name(struct protolib *plib, struct library *lib,
+ struct dict *type_dieoffset_hash,
+ Dwarf_Die *die, const char* function_name)
{
- // I use the linkage function name if there is one, otherwise the
- // plain name
- const char* function_name = NULL;
- Dwarf_Attribute attr;
- if (dwarf_attr(die, DW_AT_linkage_name, &attr) != NULL)
- function_name = dwarf_formstring(&attr);
- if (function_name == NULL)
- function_name = dwarf_diename(die);
- if (function_name == NULL) {
- complain(die, "Function has no name. Not importing");
- return true;
- }
-
if (!filter_matches_symbol(options.plt_filter, function_name, lib) &&
- !filter_matches_symbol(options.static_filter, function_name, lib) &&
- !filter_matches_symbol(options.export_filter, function_name, lib)) {
+ !filter_matches_symbol(options.static_filter, function_name, lib) &&
+ !filter_matches_symbol(options.export_filter, function_name, lib)) {
complain(die, "Prototype not requested by any filter");
return true;
}
complain(die, "subroutine_type: 0x%02x; function '%s'",
- dwarf_tag(die), function_name);
+ dwarf_tag(die), function_name);
- struct prototype* proto_already_there =
+ struct prototype *proto_already_there =
protolib_lookup_prototype(plib, function_name, false);
if (proto_already_there != NULL) {
}
struct prototype proto;
- if(!get_prototype(&proto, die, plib, type_dieoffset_hash)) {
+ if (!get_prototype(&proto, die, plib, type_dieoffset_hash)) {
complain(die, "couldn't get prototype");
return false;
}
- const char* function_name_dup = strdup(function_name);
- if( function_name_dup == NULL ) {
+ const char *function_name_dup = strdup(function_name);
+ if (function_name_dup == NULL) {
complain(die, "couldn't strdup");
prototype_destroy(&proto);
return false;
return true;
}
-static bool process_die_compileunit(struct protolib* plib, struct library* lib,
- struct dict* type_dieoffset_hash,
- Dwarf_Die* parent)
+static bool import_subprogram_die(struct protolib *plib, struct library *lib,
+ struct dict *type_dieoffset_hash,
+ Dwarf_Die *die)
{
+ // If there is a linkage name, I use it (this is required for C++ code,
+ // in particular).
+ //
+ // I use the plain name regardless, since sometimes the exported symbol
+ // corresponds to the plain name, NOT the linkage name. For instance I
+ // see this on my Debian/sid amd64 box. In its libc, the linkage name of
+ // __nanosleep is __GI___nanosleep, but the export is __nanosleep
+ const char *function_name;
+ Dwarf_Attribute attr;
+
+ if (dwarf_attr(die, DW_AT_linkage_name, &attr) != NULL &&
+ (function_name = dwarf_formstring(&attr)) != NULL &&
+ !import_subprogram_name(plib, lib, type_dieoffset_hash, die,
+ function_name)) {
+ return false;
+ }
+
+ if ((function_name = dwarf_diename(die)) != NULL &&
+ !import_subprogram_name(plib, lib, type_dieoffset_hash, die,
+ function_name)) {
+ return false;
+ }
+
+ return true;
+}
+
+static bool process_die_compileunit(struct protolib *plib, struct library *lib,
+ struct dict *type_dieoffset_hash,
+ Dwarf_Die *parent)
+{
+ complain(parent, "Processing compile unit");
Dwarf_Die die;
if (dwarf_child(parent, &die) != 0) {
// no child nodes, so nothing to do
while (1) {
if (dwarf_tag(&die) == DW_TAG_subprogram)
- if(!import_subprogram(plib, lib, type_dieoffset_hash, &die))
- complain(&die, "Error importing subprogram. Skipping");
+ if (!import_subprogram_die(plib, lib, type_dieoffset_hash,
+ &die))
+ complain(&die, "Error importing subprogram. "
+ "Skipping");
NEXT_SIBLING(&die);
}
return true;
}
-static void import(struct protolib* plib, struct library* lib, Dwfl* dwfl)
+static void import(struct protolib *plib, struct library *lib,
+ Dwfl_Module *dwfl_module)
{
// A map from DIE addresses (Dwarf_Off) to type structures (struct
// arg_type_info*). This is created and filled in at the start of each
// import, and deleted when the import is complete
struct dict type_dieoffset_hash;
- dict_init(&type_dieoffset_hash, sizeof(Dwarf_Off), sizeof(struct arg_type_info*),
- dwarf_die_hash, dwarf_die_eq, NULL);
+ dict_init(&type_dieoffset_hash, sizeof(Dwarf_Off),
+ sizeof(struct arg_type_info*),
+ dwarf_die_hash, dwarf_die_eq, NULL);
Dwarf_Addr bias;
- Dwarf_Die* die = NULL;
- while ((die = dwfl_nextcu(dwfl, die, &bias)) != NULL) {
- if (dwarf_tag(die) == DW_TAG_compile_unit)
- process_die_compileunit(plib, lib, &type_dieoffset_hash, die);
+ Dwarf_Die *die = NULL;
+ while ((die = dwfl_module_nextcu(dwfl_module, die, &bias)) != NULL) {
+ if (dwarf_tag(die) == DW_TAG_compile_unit)
+ process_die_compileunit(plib, lib,
+ &type_dieoffset_hash, die);
else
- complain(die, "A DW_TAG_compile_unit die expected. Skipping this one");
- }
+ complain(die, "A DW_TAG_compile_unit die expected. "
+ "Skipping this one");
+ }
dict_destroy(&type_dieoffset_hash, NULL, NULL, NULL);
}
-bool import_DWARF_prototypes(struct library* lib)
+bool import_DWARF_prototypes(struct library *lib)
{
- struct protolib* plib = lib->protolib;
- Dwfl* dwfl = lib->dwfl;
+ struct protolib *plib = lib->protolib;
+ debug(DEBUG_FUNCTION, "Importing DWARF prototypes from '%s'",
+ lib->soname);
if (plib == NULL) {
- const char* soname_dup = strdup(lib->soname);
- if( soname_dup == NULL ) {
+ const char *soname_dup = strdup(lib->soname);
+ if (soname_dup == NULL) {
fprintf(stderr, "couldn't strdup");
return false;
}
plib = protolib_cache_default(&g_protocache, soname_dup, 1);
if (plib == NULL) {
fprintf(stderr, "Error loading protolib %s: %s.\n",
- lib->soname, strerror(errno));
+ lib->soname, strerror(errno));
}
}
- import(plib, lib, dwfl);
+ import(plib, lib, lib->dwfl_module);
lib->protolib = plib;
return true;
projects / platform / upstream / ltrace.git / blobdiff