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libctf, ld: more dumper improvements

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Dump more details about the types found in data object and function info
sections (the type ID and recursive info on the type itself, but not on
its members).  Before now, this was being dumped for entries in the
variable section, but not for the closely-related function info and data
object sections, which is inconsistent and makes finding the
corresponding types in the type section unnecessarily hard.  (This also
gets rid of code in which bugs have already been found in favour of the
same code everything else in the dumper uses to dump types.)

While we're doing that, change the recursive type dumper in question to
recursively dump info on arrays' element type, just as we do for all
types that reference other types. (Arrays are not a kind of reference
type in libctf, but perhaps we should change that in future and make
ctf_type_reference return the element type.)

ld/ChangeLog
2021-01-05  Nick Alcock  <nick.alcock@oracle.com>

	* testsuite/ld-ctf/array.d: Adjust for dumper changes.
	* testsuite/ld-ctf/data-func-conflicted.d: Likewise.
	* testsuite/ld-ctf/diag-cttname-null.d: Likewise.
	* testsuite/ld-ctf/diag-cuname.d: Likewise.
	* testsuite/ld-ctf/diag-parlabel.d: Likewise.
	* testsuite/ld-ctf/function.d: Likewise.
	* testsuite/ld-ctf/slice.d: Likewise.

libctf/ChangeLog
2021-01-05  Nick Alcock  <nick.alcock@oracle.com>

	* ctf-dump.c (ctf_dump_objts): Dump by calling ctf_dump_format_type.
	(ctf_dump_format_type): Don't emit the size for function objects.
	Dump the element type of arrays like we dump the pointed-to type of
	pointers, etc.
This commit is contained in:
Nick Alcock 2021-01-05 13:25:56 +00:00
parent 57f97d0e6d
commit 91e7ce2fd7
10 changed files with 69 additions and 56 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
ld/ChangeLog
View File

@ -1,3 +1,13 @@
2021-01-05 Nick Alcock <nick.alcock@oracle.com>
* testsuite/ld-ctf/array.d: Adjust for dumper changes.
* testsuite/ld-ctf/data-func-conflicted.d: Likewise.
* testsuite/ld-ctf/diag-cttname-null.d: Likewise.
* testsuite/ld-ctf/diag-cuname.d: Likewise.
* testsuite/ld-ctf/diag-parlabel.d: Likewise.
* testsuite/ld-ctf/function.d: Likewise.
* testsuite/ld-ctf/slice.d: Likewise.
2021-01-05 Nick Alcock <nick.alcock@oracle.com>
* testsuite/ld-ctf/array.d: Adjust for dumper changes.

4
ld/testsuite/ld-ctf/array.d
View File

@ -20,8 +20,8 @@ Contents of CTF section .ctf:
Labels:
Data objects:
digits -> int \[10\]
digits_names -> char \*\[10\]
digits -> 0x[0-9a-f]*: int \[10\] .*
digits_names -> 0x[0-9a-f]*: char \*\[10\] .*
Function objects:

22
ld/testsuite/ld-ctf/data-func-conflicted.d
View File

@ -20,12 +20,12 @@ Contents of CTF section \.ctf:
String section: .*
#...
Data objects:
bar -> struct var_3
var_1 -> foo_t
var_666 -> foo_t \*
bar -> 0x[0-9a-f]*: struct var_3 \(size 0x[0-9a-f]*\)
var_1 -> 0x[0-9a-f]*: foo_t \(size 0x[0-9a-f]*\) -> .*
var_666 -> 0x[0-9a-f]*: foo_t \* \(size 0x[0-9a-f]*\) -> .*
Function objects:
func_[0-9]* -> void \*\(\*\) \(const char \*restrict, int \(\*\)\(\*\) \(const char \*\)\)
func_[0-9]* -> 0x[0-9a-f]*: void \*\(\*\) \(const char \*restrict, int \(\*\)\(\*\) \(const char \*\)\)
#...
Types:
#...
@ -46,13 +46,13 @@ CTF archive member: .*/data-func-1\.c:
Labels:
Data objects:
var_[0-9]* -> foo_t
var_[0-9]* -> foo_t
var_[0-9]* -> foo_t
var_[0-9]* -> foo_t
var_[0-9]* -> foo_t
var_[0-9]* -> foo_t
var_[0-9]* -> foo_t
var_[0-9]* -> 0x[0-9a-f]*: foo_t \(size 0x[0-9a-f]*\) -> .*
var_[0-9]* -> 0x[0-9a-f]*: foo_t \(size 0x[0-9a-f]*\) -> .*
var_[0-9]* -> 0x[0-9a-f]*: foo_t \(size 0x[0-9a-f]*\) -> .*
var_[0-9]* -> 0x[0-9a-f]*: foo_t \(size 0x[0-9a-f]*\) -> .*
var_[0-9]* -> 0x[0-9a-f]*: foo_t \(size 0x[0-9a-f]*\) -> .*
var_[0-9]* -> 0x[0-9a-f]*: foo_t \(size 0x[0-9a-f]*\) -> .*
var_[0-9]* -> 0x[0-9a-f]*: foo_t \(size 0x[0-9a-f]*\) -> .*
#...
Function objects:

2
ld/testsuite/ld-ctf/diag-cttname-null.d
View File

@ -13,7 +13,7 @@ Contents of CTF section .ctf:
Version: 4 \(CTF_VERSION_3\)
#...
Data objects:
a -> struct
a -> 0x[0-9a-f]*: struct \(size 0x[0-9a-f]*\)
#...
Types:
#...

2
ld/testsuite/ld-ctf/diag-cuname.d
View File

@ -21,7 +21,7 @@ Contents of CTF section .ctf:
Labels:
Data objects:
a -> struct A
a -> 0x[0-9a-f]*: struct A \(size 0x[0-9a-f]*\)
#...
Function objects:

2
ld/testsuite/ld-ctf/diag-parlabel.d
View File

@ -20,7 +20,7 @@ Contents of CTF section .ctf:
Labels:
Data objects:
a -> struct A
a -> 0x[0-9a-f]*: struct A \(size 0x[0-9a-f]*\)
#...
Function objects:

4
ld/testsuite/ld-ctf/function.d
View File

@ -18,10 +18,10 @@ Contents of CTF section .ctf:
String section: .*
#...
Function objects:
foo -> int \(\*\) \(char, int, float, void \*, void \(\*\)\(\*\) \(int\)\)
foo -> 0x[0-9a-f]*: int \(\*\) \(char, int, float, void \*, void \(\*\)\(\*\) \(int\)\)
#...
Types:
#...
0x[0-9a-f]*: int \(\*\) \(char, int, float, void \*, void \(\*\)\(\*\) \(int\)\) \(size 0x0\)
0x[0-9a-f]*: int \(\*\) \(char, int, float, void \*, void \(\*\)\(\*\) \(int\)\)
*\[0x0\] \(ID 0x[0-9a-f]*\) \(kind 5\) int \(\*\) \(char, int[0-9]*, float, void \*, void \(\*\)\(\*\) \(int\)\) \(aligned at 0x[0-9a-f]*\)
#...

2
ld/testsuite/ld-ctf/slice.d
View File

@ -19,7 +19,7 @@ Contents of CTF section .ctf:
String section: .*
#...
Data objects:
slices -> struct slices
slices -> 0x[0-9a-f]*: struct slices \(size 0x[0-9a-f]*\)
#...
Types:
#...

7
libctf/ChangeLog
View File

@ -1,3 +1,10 @@
2021-01-05 Nick Alcock <nick.alcock@oracle.com>
* ctf-dump.c (ctf_dump_objts): Dump by calling ctf_dump_format_type.
(ctf_dump_format_type): Don't emit the size for function objects.
Dump the element type of arrays like we dump the pointed-to type of
pointers, etc.
2021-01-05 Nick Alcock <nick.alcock@oracle.com>
* ctf-dump.c (ctf_dump_format_type): Add 0x to hex type IDs.

70
libctf/ctf-dump.c
View File

@ -93,6 +93,8 @@ ctf_dump_format_type (ctf_dict_t *fp, ctf_id_t id, int flag)
do
{
ctf_encoding_t enc;
ctf_arinfo_t ar;
int kind, unsliced_kind;
const char *nonroot_leader = "";
const char *nonroot_trailer = "";
@ -123,26 +125,25 @@ ctf_dump_format_type (ctf_dict_t *fp, ctf_id_t id, int flag)
bit = NULL;
if (buf[0] != '\0')
{
str = str_append (str, buf);
str = str_append (str, " ");
}
str = str_append (str, buf);
free (buf);
buf = NULL;
unsliced_kind = ctf_type_kind_unsliced (fp, id);
kind = ctf_type_kind (fp, id);
/* Slices get a different print representation. */
if (ctf_type_kind_unsliced (fp, id) == CTF_K_SLICE)
if (unsliced_kind == CTF_K_SLICE)
{
ctf_type_encoding (fp, id, &enc);
if (asprintf (&bit, "[slice 0x%x:0x%x] ",
if (asprintf (&bit, " [slice 0x%x:0x%x]",
enc.cte_offset, enc.cte_bits) < 0)
goto oom;
}
else if (ctf_type_kind (fp, id) == CTF_K_INTEGER)
else if (kind == CTF_K_INTEGER)
{
ctf_type_encoding (fp, id, &enc);
if (asprintf (&bit, "[0x%x:0x%x] ",
if (asprintf (&bit, " [0x%x:0x%x]",
enc.cte_offset, enc.cte_bits) < 0)
goto oom;
}
@ -150,16 +151,27 @@ ctf_dump_format_type (ctf_dict_t *fp, ctf_id_t id, int flag)
free (bit);
bit = NULL;
if (asprintf (&bit, "(size 0x%lx)%s",
(unsigned long) ctf_type_size (fp, id),
nonroot_trailer) < 0)
goto oom;
if (kind != CTF_K_FUNCTION)
if (asprintf (&bit, " (size 0x%lx)%s",
(unsigned long) ctf_type_size (fp, id),
nonroot_trailer) < 0)
goto oom;
str = str_append (str, bit);
free (bit);
bit = NULL;
new_id = ctf_type_reference (fp, id);
/* Keep going as long as this type references another. We consider arrays
to "reference" their element type. */
if (kind == CTF_K_ARRAY)
{
if (ctf_array_info (fp, id, &ar) < 0)
goto err;
new_id = ar.ctr_contents;
}
else
new_id = ctf_type_reference (fp, id);
if (new_id != CTF_ERR)
str = str_append (str, " ->");
} while (new_id != CTF_ERR);
@ -383,36 +395,26 @@ ctf_dump_objts (ctf_dict_t *fp, ctf_dump_state_t *state, int functions)
while ((id = ctf_symbol_next (fp, &i, &name, functions)) != CTF_ERR)
{
char *typestr = NULL;
int err = 0;
/* Emit the name, if we know it. */
/* Emit the name, if we know it. No trailing space: ctf_dump_format_type
has a leading one. */
if (name)
{
if (asprintf (&str, "%s -> ", name) < 0)
if (asprintf (&str, "%s ->", name) < 0)
goto oom;
}
else
str = xstrdup ("");
if ((typestr = ctf_type_aname (fp, id)) == NULL)
if ((typestr = ctf_dump_format_type (state->cds_fp, id,
CTF_ADD_ROOT)) == NULL)
{
if (id == 0 || ctf_errno (fp) == ECTF_NONREPRESENTABLE)
{
if (asprintf (&typestr, " (%s)", _("type not represented in CTF")) < 0)
goto oom;
goto out;
}
if (asprintf (&typestr, _("error: %s"), ctf_errmsg (ctf_errno (fp))) < 0)
goto oom;
err = -1;
goto out;
ctf_dump_append (state, str);
continue; /* Swallow the error. */
}
str = str_append (str, typestr);
str = str_append (str, "\n");
free (typestr);
ctf_dump_append (state, str);
continue;
@ -420,12 +422,6 @@ ctf_dump_objts (ctf_dict_t *fp, ctf_dump_state_t *state, int functions)
ctf_set_errno (fp, ENOMEM);
ctf_next_destroy (i);
return -1;
out:
str = str_append (str, typestr);
free (typestr);
ctf_dump_append (state, str);
ctf_next_destroy (i);
return err; /* errno is set for us. */
}
return 0;
}