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/* Machine-dependent definitions for profiling support. Nios II version.
Copyright (C) 1996-2021 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
<https://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\t__mcount_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" \
);
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