Add libgmp 6.2.0 to third_party
Don't build it yet. That will come in the next review.
Change-Id: Idf3266558165e5ab45f4a41c98cc8c838c8244d5
diff --git a/third_party/gmp/tests/arm32check.c b/third_party/gmp/tests/arm32check.c
new file mode 100644
index 0000000..0a9f86d
--- /dev/null
+++ b/third_party/gmp/tests/arm32check.c
@@ -0,0 +1,95 @@
+/* ARM32 calling conventions checking.
+
+Copyright 2000, 2001, 2004, 2007 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library test suite.
+
+The GNU MP Library test suite is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 3 of the License,
+or (at your option) any later version.
+
+The GNU MP Library test suite 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 a copy of the GNU General Public License along with
+the GNU MP Library test suite. If not, see https://www.gnu.org/licenses/. */
+
+#include <stdio.h>
+#include "gmp-impl.h"
+#include "tests.h"
+
+
+/* Vector if constants and register values. */
+mp_limb_t calling_conventions_values[29] =
+{
+ 0x12345678, /* 0 want_r4 */
+ 0x87654321, /* 1 want_r5 */
+ 0x89ABCDEF, /* 2 want_r6 */
+ 0xFEDCBA98, /* 3 want_r7 */
+ 0xDEADBEEF, /* 4 want_r8 */
+ 0xBADECAFE, /* 5 want_r9 */
+ 0xFFEEDDCC, /* 6 want_r10 */
+ 0xBBAA9988, /* 7 want_r11 */
+
+ 0x00000000, /* 8 save_r4 */
+ 0x00000000, /* 9 save_r5 */
+ 0x00000000, /* 10 save_r6 */
+ 0x00000000, /* 11 save_r7 */
+ 0x00000000, /* 12 save_r8 */
+ 0x00000000, /* 13 save_r9 */
+ 0x00000000, /* 14 save_r10 */
+ 0x00000000, /* 15 save_r11 */
+ 0x00000000, /* 16 save_r14 */
+
+ 0x00000000, /* 17 got_r4 */
+ 0x00000000, /* 18 got_r5 */
+ 0x00000000, /* 19 got_r6 */
+ 0x00000000, /* 20 got_r7 */
+ 0x00000000, /* 21 got_r8 */
+ 0x00000000, /* 22 got_r9 */
+ 0x00000000, /* 23 got_r10 */
+ 0x00000000, /* 24 got_r11 */
+
+ 0x00112233, /* 25 junk_r0 */
+ 0x44556677, /* 26 junk_r1 */
+ 0x12344321, /* 27 junk_r2 */
+ 0x56788765, /* 28 junk_r3 */
+};
+
+/* Index starts for various regions in above vector. */
+#define WANT_CALLEE_SAVES 0
+#define SAVE_CALLEE_SAVES 8
+#define RETADDR 16
+#define GOT_CALLEE_SAVES 17
+#define JUNK_PARAMS 25
+
+/* Return 1 if ok, 0 if not */
+
+int
+calling_conventions_check (void)
+{
+ const char *header = "Violated calling conventions:\n";
+ int ret = 1;
+ int i;
+
+#define CHECK(callreg, regnum, value) \
+ if (callreg != value) \
+ { \
+ printf ("%s r%d got 0x%08lX want 0x%08lX\n", \
+ header, regnum, callreg, value); \
+ header = ""; \
+ ret = 0; \
+ }
+
+ for (i = 0; i < 8; i++)
+ {
+ CHECK (calling_conventions_values[GOT_CALLEE_SAVES + i],
+ i + 4,
+ calling_conventions_values[WANT_CALLEE_SAVES + i]);
+ }
+
+ return ret;
+}