Squashed 'third_party/elfutils/' content from commit 555e15e
Change-Id: I61cde98949e47e5c8c09c33260de17f30921be79
git-subtree-dir: third_party/elfutils
git-subtree-split: 555e15ebe8bf1eb33d00747173cfc80cc65648a4
diff --git a/libasm/asm_addstrz.c b/libasm/asm_addstrz.c
new file mode 100644
index 0000000..26e06bb
--- /dev/null
+++ b/libasm/asm_addstrz.c
@@ -0,0 +1,125 @@
+/* Add string to a section.
+ Copyright (C) 2002 Red Hat, Inc.
+ This file is part of elfutils.
+ Written by Ulrich Drepper <drepper@redhat.com>, 2002.
+
+ This file is free software; you can redistribute it and/or modify
+ it under the terms of either
+
+ * the GNU Lesser General Public License as published by the Free
+ Software Foundation; either version 3 of the License, or (at
+ your option) any later version
+
+ or
+
+ * the GNU General Public License as published by the Free
+ Software Foundation; either version 2 of the License, or (at
+ your option) any later version
+
+ or both in parallel, as here.
+
+ elfutils is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received copies of the GNU General Public License and
+ the GNU Lesser General Public License along with this program. If
+ not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <libasmP.h>
+
+
+/* Add zero terminated string STR of size LEN to (sub)section ASMSCN. */
+int
+asm_addstrz (AsmScn_t *asmscn, const char *str, size_t len)
+{
+ if (asmscn == NULL)
+ return -1;
+
+ if (unlikely (asmscn->type == SHT_NOBITS))
+ {
+ if (len == 0)
+ {
+ if (str[0] != '\0')
+ {
+ __libasm_seterrno (ASM_E_TYPE);
+ return -1;
+ }
+ }
+ else
+ {
+ size_t cnt;
+
+ for (cnt = 0; cnt < len; ++cnt)
+ if (str[cnt] != '\0')
+ {
+ __libasm_seterrno (ASM_E_TYPE);
+ return -1;
+ }
+ }
+ }
+
+ if (len == 0)
+ len = strlen (str) + 1;
+
+ if (unlikely (asmscn->ctx->textp))
+ {
+ bool nextline = true;
+
+ do
+ {
+ if (nextline)
+ {
+ fputs ("\t.string\t\"", asmscn->ctx->out.file);
+ nextline = false;
+ }
+
+ if (*str == '\0')
+ fputs ("\\000", asmscn->ctx->out.file);
+ else if (! isascii (*str))
+ fprintf (asmscn->ctx->out.file, "\\%03o",
+ (unsigned int) *((unsigned char *)str));
+ else if (*str == '\\')
+ fputs ("\\\\", asmscn->ctx->out.file);
+ else if (*str == '\n')
+ {
+ fputs ("\\n\"", asmscn->ctx->out.file);
+ nextline = true;
+ }
+ else
+ fputc (*str, asmscn->ctx->out.file);
+
+ ++str;
+ }
+ while (--len > 0 && (len > 1 || *str != '\0'));
+
+ if (! nextline)
+ fputs ("\"\n", asmscn->ctx->out.file);
+ }
+ else
+ {
+ /* Make sure there is enough room. */
+ if (__libasm_ensure_section_space (asmscn, len) != 0)
+ return -1;
+
+ /* Copy the string. */
+ memcpy (&asmscn->content->data[asmscn->content->len], str, len);
+
+ /* Adjust the pointer in the data buffer. */
+ asmscn->content->len += len;
+
+ /* Increment the offset in the (sub)section. */
+ asmscn->offset += len;
+ }
+
+ return 0;
+}