d2d16e5663
To define USDT probes, dtrace -G makes use of relocations for undefined symbols: the target address is overwritten with NOPs and the location is recorded in the DOF section of the output object file. To avoid link errors, the original relocation is destroyed. However, this means that the same input object file cannot be processed multiple times, as happens during incremental rebuilds. Instead, only set the relocation type to NONE, so that all information required to reconstruct USDT probes is preserved. Reported by: bdrewery MFC after: 3 weeks Sponsored by: The FreeBSD Foundation
74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _DT_STRTAB_H
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#define _DT_STRTAB_H
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#pragma ident "%Z%%M% %I% %E% SMI"
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct dt_strhash {
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const char *str_data; /* pointer to actual string data */
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ulong_t str_buf; /* index of string data buffer */
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size_t str_off; /* offset in bytes of this string */
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size_t str_len; /* length in bytes of this string */
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struct dt_strhash *str_next; /* next string in hash chain */
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} dt_strhash_t;
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typedef struct dt_strtab {
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dt_strhash_t **str_hash; /* array of hash buckets */
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ulong_t str_hashsz; /* size of hash bucket array */
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char **str_bufs; /* array of buffer pointers */
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char *str_ptr; /* pointer to current buffer location */
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ulong_t str_nbufs; /* size of buffer pointer array */
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size_t str_bufsz; /* size of individual buffer */
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ulong_t str_nstrs; /* total number of strings in strtab */
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size_t str_size; /* total size of strings in bytes */
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} dt_strtab_t;
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typedef ssize_t dt_strtab_write_f(const char *, size_t, size_t, void *);
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extern dt_strtab_t *dt_strtab_create(size_t);
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extern void dt_strtab_destroy(dt_strtab_t *);
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extern boolean_t dt_strtab_empty(dt_strtab_t *);
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extern ssize_t dt_strtab_index(dt_strtab_t *, const char *);
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extern ssize_t dt_strtab_insert(dt_strtab_t *, const char *);
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extern size_t dt_strtab_size(const dt_strtab_t *);
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extern ssize_t dt_strtab_write(const dt_strtab_t *,
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dt_strtab_write_f *, void *);
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extern ulong_t dt_strtab_hash(const char *, size_t *);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _DT_STRTAB_H */
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