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libctf: eliminate dtd_u, part 3: functions

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One more member vanishes from the dtd_u, leaving only the member for
struct/union/enum members.

There's not much to do here, since as of commit afd78bd6f0a30ba5 we use
the same representation (type sizes, etc) in the dtu_argv as we will
use in the final vlen, with one exception: the vlen has alignment
padding, and the dtu_argv did not.  Simplify things by adding suitable
padding in both cases.

libctf/ChangeLog
2021-03-18  Nick Alcock  <nick.alcock@oracle.com>

	* ctf-impl.h (ctf_dtdef_t) <dtd_u.dtu_argv>: Remove.
	* ctf-create.c (ctf_dtd_delete): No longer free it.
	(ctf_add_function): Use the dtd_vlen, not dtu_argv.  Properly align.
	* ctf-serialize.c (ctf_emit_type_sect): Just copy the dtd_vlen.
	* ctf-types.c (ctf_func_type_info): Just use the vlen.
	(ctf_func_type_args): Likewise.
This commit is contained in:
Nick Alcock
2021-03-18 12:37:52 +00:00
parent 534444b1ee
commit 81982d20fa
5 changed files with 28 additions and 35 deletions
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16
libctf/ctf-serialize.c
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@ -892,19 +892,9 @@ ctf_emit_type_sect (ctf_dict_t *fp, unsigned char **tptr)
break;
case CTF_K_FUNCTION:
{
uint32_t *argv = (uint32_t *) (uintptr_t) t;
uint32_t argc;
for (argc = 0; argc < vlen; argc++)
*argv++ = dtd->dtd_u.dtu_argv[argc];
if (vlen & 1)
*argv++ = 0; /* Pad to 4-byte boundary. */
t = (unsigned char *) argv;
break;
}
memcpy (t, dtd->dtd_vlen, sizeof (uint32_t) * (vlen + (vlen & 1)));
t += sizeof (uint32_t) * (vlen + (vlen & 1));
break;
case CTF_K_STRUCT:
case CTF_K_UNION: