Commit nios2 port to master.

1 files changed, 64 insertions, 0 deletions

diff --git a/sysdeps/nios2/machine-gmon.h b/sysdeps/nios2/machine-gmon.h
new file mode 100644
index 0000000000..1f0ea8ff70
--- /dev/null
+++ b/sysdeps/nios2/machine-gmon.h
@@ -0,0 +1,64 @@
+/* Machine-dependent definitions for profiling support.  Nios II version.
+   Copyright (C) 1996-2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+
+#define _MCOUNT_DECL(frompc, selfpc) \
+static void __attribute_used__ __mcount_internal (u_long frompc, u_long selfpc)
+
+/* This macro/func MUST save r4, r5, r6, r7 and r8 because the compiler inserts
+   blind calls to mcount(), ignoring the fact that mcount may clobber
+   registers; therefore, mcount may NOT clobber registers.  */
+
+#if defined(__PIC__) || defined(PIC)
+#define NIOS2_MCOUNT_CALL				      \
+  "nextpc r3\n\t"					      \
+  "1: movhi r2, %hiadj(_gp_got - 1b)\n\t"		      \
+  "addi r2, r2, %lo(_gp_got - 1b)\n\t"			      \
+  "add r2, r2, r3\n\t"						\
+  "ldw r2, %call(__mcount_internal)(r2)\n\t"			\
+  "callr r2\n\t"
+#else
+#define NIOS2_MCOUNT_CALL			\
+  "call\tmcount_internal\n\t"
+#endif
+
+#define MCOUNT						\
+  asm (".globl _mcount\n\t"				\
+       ".type _mcount,@function\n\t"			\
+       "_mcount:\n\t"					\
+       "subi sp, sp, 24\n\t"				\
+       "stw ra, 20(sp)\n\t"				\
+       "stw r8, 16(sp)\n\t"				\
+       "stw r7, 12(sp)\n\t"				\
+       "stw r6, 8(sp)\n\t"				\
+       "stw r5, 4(sp)\n\t"				\
+       "stw r4, 0(sp)\n\t"				\
+       "mov r4, r8\n\t"					\
+       "mov r5, ra\n\t"					\
+       NIOS2_MCOUNT_CALL				\
+       "ldw ra, 20(sp)\n\t"				\
+       "ldw r8, 16(sp)\n\t"				\
+       "ldw r7, 12(sp)\n\t"				\
+       "ldw r6, 8(sp)\n\t"				\
+       "ldw r5, 4(sp)\n\t"				\
+       "ldw r4, 0(sp)\n\t"				\
+       "addi sp, sp, 24\n\t"				\
+       "ret\n\t"					\
+       ".size _mcount, . - _mcount\n\t"			\
+       );