| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364 |
- /* Machine-dependent definitions for profiling support. Nios II version.
- Copyright (C) 1996-2019 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\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" \
- );
|
