| /* Machine-dependent definitions for profiling support. Nios II version. |
| Copyright (C) 1996-2016 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" \ |
| ); |