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/demangle.c | 87 +++++++++++++++++++++++++++++++ 1 file changed, 87 insertions(+) create mode 100644 usr/src/lib/libdemangle/common/demangle.c (limited to 'usr/src/lib/libdemangle/common/demangle.c') diff --git a/usr/src/lib/libdemangle/common/demangle.c b/usr/src/lib/libdemangle/common/demangle.c new file mode 100644 index 0000000000..e827fd8cec --- /dev/null +++ b/usr/src/lib/libdemangle/common/demangle.c @@ -0,0 +1,87 @@ +/* + * 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 2018 Jason King + */ + +#include +#include +#include +#include +#include +#include "demangle-sys.h" +#include "demangle_int.h" + +#define DEMANGLE_DEBUG "DEMANGLE_DEBUG" + +static pthread_once_t debug_once = PTHREAD_ONCE_INIT; +volatile boolean_t demangle_debug; + +static sysdem_lang_t +detect_lang(const char *str) +{ + size_t n = strlen(str); + + if (n < 3 || str[0] != '_') + return (SYSDEM_LANG_AUTO); + + switch (str[1]) { + case 'Z': + return (SYSDEM_LANG_CPP); + + case '_': + break; + + default: + return (SYSDEM_LANG_AUTO); + } + + /* why they use ___Z sometimes is puzzling... *sigh* */ + if (str[2] == '_' && str[3] == 'Z') + return (SYSDEM_LANG_CPP); + + return (SYSDEM_LANG_AUTO); +} + +static void +check_debug(void) +{ + if (getenv(DEMANGLE_DEBUG)) + demangle_debug = B_TRUE; +} + +char * +sysdemangle(const char *str, sysdem_lang_t lang, sysdem_ops_t *ops) +{ + VERIFY0(pthread_once(&debug_once, check_debug)); + + if (ops == NULL) + ops = sysdem_ops_default; + + if (lang == SYSDEM_LANG_AUTO) { + lang = detect_lang(str); + if (lang == SYSDEM_LANG_AUTO) { + errno = ENOTSUP; + return (NULL); + } + } + + switch (lang) { + case SYSDEM_LANG_AUTO: + break; + case SYSDEM_LANG_CPP: + return (cpp_demangle(str, ops)); + } + + errno = ENOTSUP; + return (NULL); +} -- cgit v1.2.3