From 4226f635096bf9d814aa9fb335518c4855bbe3a3 Mon Sep 17 00:00:00 2001 From: Jason King Date: Sat, 27 May 2017 18:46:17 -0500 Subject: 6375 Add native name demangling support Reviewed by: Robert Mustacchi Reviewed by: Richard Lowe Approved by: Dan McDonald --- usr/src/lib/libdemangle/common/util.c | 85 +++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 usr/src/lib/libdemangle/common/util.c (limited to 'usr/src/lib/libdemangle/common/util.c') diff --git a/usr/src/lib/libdemangle/common/util.c b/usr/src/lib/libdemangle/common/util.c new file mode 100644 index 0000000000..9ffb72c79b --- /dev/null +++ b/usr/src/lib/libdemangle/common/util.c @@ -0,0 +1,85 @@ +/* + * This file and its contents are supplied under the terms of the + * Common Development and Distribution License ("CDDL"), version 1.0. + * You may only use this file in accordance with the terms of version + * 1.0 of the CDDL. + * + * A full copy of the text of the CDDL should have accompanied this + * source. A copy of the CDDL is also available via the Internet at + * http://www.illumos.org/license/CDDL. + */ + +/* + * Copyright 2017 Jason King + */ + +#include +#include +#include +#include "demangle-sys.h" +#include "demangle_int.h" + +void * +zalloc(sysdem_ops_t *ops, size_t len) +{ + void *p = ops->alloc(len); + + if (p != NULL) + (void) memset(p, 0, len); + +#ifdef DEBUG + /* + * In normal operation, we should never exhaust memory. Either + * something's wrong, or the system is so hosed that aborting + * shouldn't hurt anything, and it gives us a more useful stack + * trace. + */ + if (p == NULL) + abort(); +#endif + + return (p); +} + +void +xfree(sysdem_ops_t *ops, void *p, size_t len) +{ + if (p == NULL || len == 0) + return; + + ops->free(p, len); +} + +void * +xrealloc(sysdem_ops_t *ops, void *p, size_t oldsz, size_t newsz) +{ + if (newsz == oldsz) + return (p); + + VERIFY3U(newsz, >, oldsz); + + void *temp = zalloc(ops, newsz); + + if (temp == NULL) + return (NULL); + + if (oldsz > 0) { + (void) memcpy(temp, p, oldsz); + xfree(ops, p, oldsz); + } + + return (temp); +} + +/*ARGSUSED*/ +static void +def_free(void *p, size_t len) +{ + free(p); +} + +static sysdem_ops_t i_sysdem_ops_default = { + .alloc = malloc, + .free = def_free +}; +sysdem_ops_t *sysdem_ops_default = &i_sysdem_ops_default; -- cgit v1.2.3