1 files changed, 167 insertions, 0 deletions
diff --git a/usr/src/lib/libsaveargs/tests/dump/dump.c b/usr/src/lib/libsaveargs/tests/dump/dump.c
new file mode 100644
index 0000000000..7b4a628d4a
--- /dev/null
+++ b/usr/src/lib/libsaveargs/tests/dump/dump.c
@@ -0,0 +1,167 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright (c) 2011, Joyent, Inc. All rights reserved.
+ * Copyright (c) 2011, Robert Mustacchi, Inc. All rights reserved.
+ * Copyright 2013, Richard Lowe.
+ */
+
+#include <err.h>
+#include <fcntl.h>
+#include <gelf.h>
+#include <libctf.h>
+#include <saveargs.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <strings.h>
+#include <unistd.h>
+
+extern const char *__progname;
+
+typedef struct symtab_sym {
+	GElf_Sym ss_sym;
+	char *ss_name;
+	ctf_funcinfo_t ss_finfo;
+	uint8_t *ss_data;
+	size_t ss_size;
+} symtab_sym_t;
+
+static void
+walk_symtab(Elf *elf, char *fname, ctf_file_t *fp,
+    void (*callback)(ctf_file_t *, symtab_sym_t *))
+{
+	Elf_Scn *stab = NULL;
+	Elf_Scn *text = NULL;
+	Elf_Data *stabdata = NULL;
+	Elf_Data *textdata = NULL;
+	GElf_Ehdr ehdr;
+	GElf_Shdr stabshdr;
+	GElf_Shdr textshdr;
+	int foundtext = 0, foundstab = 0;
+	symtab_sym_t ss;
+
+	if ((gelf_getehdr(elf, &ehdr)) == NULL)
+		errx(1, "could not read ELF header from %s\n",
+		    fname);
+
+	while ((stab = elf_nextscn(elf, stab)) != NULL) {
+		(void) gelf_getshdr(stab, &stabshdr);
+
+		if (stabshdr.sh_type == SHT_SYMTAB) {
+			foundstab = 1;
+			break;
+		}
+	}
+
+	while ((text = elf_nextscn(elf, text)) != NULL) {
+		(void) gelf_getshdr(text, &textshdr);
+
+		if (strcmp(".text", elf_strptr(elf,
+		    ehdr.e_shstrndx, (size_t)textshdr.sh_name)) == 0) {
+			foundtext = 1;
+			break;
+		}
+	}
+
+	if (!foundstab || !foundtext)
+		return;
+
+	stabdata = elf_getdata(stab, NULL);
+	textdata = elf_rawdata(text,  NULL);
+	for (unsigned symdx = 0;
+	    symdx < (stabshdr.sh_size / stabshdr.sh_entsize);
+	    symdx++) {
+		(void) gelf_getsym(stabdata, symdx, &ss.ss_sym);
+
+		if ((GELF_ST_TYPE(ss.ss_sym.st_info) != STT_FUNC) ||
+		    (ss.ss_sym.st_shndx == SHN_UNDEF))
+			continue;
+
+		ss.ss_name = elf_strptr(elf, stabshdr.sh_link,
+		    ss.ss_sym.st_name);
+		ss.ss_data = ((uint8_t *)(textdata->d_buf)) +
+		    (ss.ss_sym.st_value - textshdr.sh_addr);
+
+		if (ctf_func_info(fp, symdx, &ss.ss_finfo) == CTF_ERR) {
+			fprintf(stderr, "failed to get funcinfo for: %s\n",
+			    ss.ss_name);
+			continue;
+		}
+
+		(void) callback(fp, &ss);
+	}
+}
+
+void
+check_sym(ctf_file_t *ctfp, symtab_sym_t *ss)
+{
+	int rettype = ctf_type_kind(ctfp, ss->ss_finfo.ctc_return);
+	int start_index = 0;
+
+	if (ss->ss_finfo.ctc_argc == 0) /* No arguments, no point */
+		return;
+
+	if (((rettype == CTF_K_STRUCT) || (rettype == CTF_K_UNION)) &&
+	    ctf_type_size(ctfp, ss->ss_finfo.ctc_return) > 16)
+		start_index = 1;
+
+	if (saveargs_has_args(ss->ss_data, ss->ss_sym.st_size,
+	    ss->ss_finfo.ctc_argc, start_index) != SAVEARGS_NO_ARGS)
+		printf("%s has %d saved args\n", ss->ss_name,
+		    ss->ss_finfo.ctc_argc);
+}
+
+int
+main(int argc, char **argv)
+{
+	Elf		*elf;
+	ctf_file_t	*ctfp;
+	int errp, fd;
+
+	if (ctf_version(CTF_VERSION) == -1)
+		errx(1, "mismatched libctf versions\n");
+
+	if (elf_version(EV_CURRENT) == EV_NONE)
+		errx(1, "mismatched libelf versions\n");
+
+	if (argc != 2)
+		errx(2, "usage: %s <file>\n", __progname);
+
+	if ((ctfp = ctf_open(argv[1], &errp)) == NULL)
+		errx(1, "failed to ctf_open file: %s: %s\n", argv[1],
+		    ctf_errmsg(errp));
+
+	if ((fd = open(argv[1], O_RDONLY)) == -1)
+		errx(1, "could not open %s\n", argv[1]);
+
+	if ((elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL)
+		errx(1, "could not interpret ELF from %s\n",
+		    argv[1]);
+
+	walk_symtab(elf, argv[1], ctfp, check_sym);
+
+	(void) elf_end(elf);
+	(void) close(fd);
+
+	return (0);
+}