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/arm32call.asm b/third_party/gmp/tests/arm32call.asm
new file mode 100644
index 0000000..24d0739
--- /dev/null
+++ b/third_party/gmp/tests/arm32call.asm
@@ -0,0 +1,83 @@
+dnl ARM32 calling conventions checking.
+
+dnl Copyright 2000, 2003, 2004, 2006, 2007, 2010, 2013, 2016 Free Software
+dnl Foundation, Inc.
+
+dnl This file is part of the GNU MP Library test suite.
+
+dnl The GNU MP Library test suite is free software; you can redistribute it
+dnl and/or modify it under the terms of the GNU General Public License as
+dnl published by the Free Software Foundation; either version 3 of the
+dnl License, or (at your option) any later version.
+
+dnl The GNU MP Library test suite is distributed in the hope that it will be
+dnl useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+dnl Public License for more details.
+
+dnl You should have received a copy of the GNU General Public License along
+dnl with the GNU MP Library test suite. If not, see
+dnl https://www.gnu.org/licenses/.
+
+
+dnl The current version of the code attempts to keep the call/return
+dnl prediction stack valid, but matching calls and returns.
+
+include(`../config.m4')
+
+
+C int calling_conventions (...);
+C
+C The global variable "calling_conventions_function" is the function to
+C call, with the arguments as passed here.
+
+define(`WANT_CALLEE_SAVES', eval(4*0))
+define(`SAVE_CALLEE_SAVES', eval(4*8))
+define(`RETADDR', eval(4*16))
+define(`GOT_CALLEE_SAVES', eval(4*17))
+define(`JUNK_PARAMS', eval(4*25))
+
+ TEXT
+ ALIGN(32)
+PROLOGUE(calling_conventions)
+ LEA( r12, calling_conventions_values)
+
+ C Preserve callee-saves registers, including the link register r14
+ add r12, r12, #SAVE_CALLEE_SAVES
+ stm r12, {r4-r11,r14}
+ sub r12, r12, #SAVE_CALLEE_SAVES
+
+ C Put chosen junk into callee-saves registers
+ add r12, r12, #WANT_CALLEE_SAVES
+ ldm r12, {r4-r11}
+ sub r12, r12, #WANT_CALLEE_SAVES
+
+ C No callee-saves registers on arm except r12 and parameter registers
+ C
+
+ C Make the actual call
+ LEA( r12, calling_conventions_function)
+ ldr r12, [r12]
+ mov r14, pc
+ return r12
+
+ LEA( r12, calling_conventions_values)
+
+ C Save callee-saves registers after call
+ add r12, r12, #GOT_CALLEE_SAVES
+ stm r12, {r4-r11}
+ sub r12, r12, #GOT_CALLEE_SAVES
+
+ C Restore callee-saves registers, including the link register r14
+ add r12, r12, #SAVE_CALLEE_SAVES
+ ldm r12, {r4-r11,r14}
+ sub r12, r12, #SAVE_CALLEE_SAVES
+
+ C Overwrite parameter registers. Note that we overwrite r1, which
+ C could hold one half of a 64-bit return value, since we don't use that
+ C in GMP.
+ add r12, r12, #JUNK_PARAMS
+ ldm r12, {r1-r3}
+
+ return r14
+EPILOGUE()