| 1 | /* $NetBSD: profile.h,v 1.1.60.1 2026/04/02 15:59:59 martin Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2014 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Matt Thomas of 3am Software Foundry. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | #ifndef _RISCV_PROFILE_H_ |
| 33 | #define _RISCV_PROFILE_H_ |
| 34 | |
| 35 | #include <machine/sysreg.h> |
| 36 | |
| 37 | #define _MCOUNT_DECL void mcount |
| 38 | |
| 39 | #define MCOUNT_ASM_NAME "_mcount" |
| 40 | #define PLTSYM |
| 41 | |
| 42 | #ifdef _LP64 |
| 43 | #define MCOUNT MCOUNT_ARCH("8", "sd", "ld") |
| 44 | #else |
| 45 | #define MCOUNT MCOUNT_ARCH("4", "sw", "lw") |
| 46 | #endif |
| 47 | |
| 48 | #ifdef __PIC__ |
| 49 | #define _PLT "@plt" |
| 50 | #else |
| 51 | #define _PLT /* nothing */ |
| 52 | #endif |
| 53 | |
| 54 | |
| 55 | #define MCOUNT_ARCH(_SZREG, _REG_S, _REG_L) __asm( \ |
| 56 | " .text\n" \ |
| 57 | " .align 2\n" \ |
| 58 | " .type " MCOUNT_ASM_NAME ",@function\n" \ |
| 59 | " .global " MCOUNT_ASM_NAME "\n" \ |
| 60 | MCOUNT_ASM_NAME ":\n" \ |
| 61 | /* \ |
| 62 | * Preserve registers that could be trashed during mcount, i.e. \ |
| 63 | * caller saved registers. \ |
| 64 | */ \ |
| 65 | " addi sp, sp, -(16 * " _SZREG ")\n" \ |
| 66 | " " _REG_S " ra, ( 0 * " _SZREG ")(sp)\n" \ |
| 67 | " " _REG_S " t0, ( 1 * " _SZREG ")(sp)\n" \ |
| 68 | " " _REG_S " t1, ( 2 * " _SZREG ")(sp)\n" \ |
| 69 | " " _REG_S " t2, ( 3 * " _SZREG ")(sp)\n" \ |
| 70 | " " _REG_S " a0, ( 4 * " _SZREG ")(sp)\n" \ |
| 71 | " " _REG_S " a1, ( 5 * " _SZREG ")(sp)\n" \ |
| 72 | " " _REG_S " a2, ( 6 * " _SZREG ")(sp)\n" \ |
| 73 | " " _REG_S " a3, ( 7 * " _SZREG ")(sp)\n" \ |
| 74 | " " _REG_S " a4, ( 8 * " _SZREG ")(sp)\n" \ |
| 75 | " " _REG_S " a5, ( 9 * " _SZREG ")(sp)\n" \ |
| 76 | " " _REG_S " a6, (10 * " _SZREG ")(sp)\n" \ |
| 77 | " " _REG_S " a7, (11 * " _SZREG ")(sp)\n" \ |
| 78 | " " _REG_S " t3, (12 * " _SZREG ")(sp)\n" \ |
| 79 | " " _REG_S " t4, (13 * " _SZREG ")(sp)\n" \ |
| 80 | " " _REG_S " t5, (14 * " _SZREG ")(sp)\n" \ |
| 81 | " " _REG_S " t6, (15 * " _SZREG ")(sp)\n" \ |
| 82 | " mv a1, ra\n" \ |
| 83 | " call mcount " _PLT "\n" \ |
| 84 | /* restore caller saved registers */ \ |
| 85 | " " _REG_L " ra, ( 0 * " _SZREG ")(sp)\n" \ |
| 86 | " " _REG_L " t0, ( 1 * " _SZREG ")(sp)\n" \ |
| 87 | " " _REG_L " t1, ( 2 * " _SZREG ")(sp)\n" \ |
| 88 | " " _REG_L " t2, ( 3 * " _SZREG ")(sp)\n" \ |
| 89 | " " _REG_L " a0, ( 4 * " _SZREG ")(sp)\n" \ |
| 90 | " " _REG_L " a1, ( 5 * " _SZREG ")(sp)\n" \ |
| 91 | " " _REG_L " a2, ( 6 * " _SZREG ")(sp)\n" \ |
| 92 | " " _REG_L " a3, ( 7 * " _SZREG ")(sp)\n" \ |
| 93 | " " _REG_L " a4, ( 8 * " _SZREG ")(sp)\n" \ |
| 94 | " " _REG_L " a5, ( 9 * " _SZREG ")(sp)\n" \ |
| 95 | " " _REG_L " a6, (10 * " _SZREG ")(sp)\n" \ |
| 96 | " " _REG_L " a7, (11 * " _SZREG ")(sp)\n" \ |
| 97 | " " _REG_L " t3, (12 * " _SZREG ")(sp)\n" \ |
| 98 | " " _REG_L " t4, (13 * " _SZREG ")(sp)\n" \ |
| 99 | " " _REG_L " t5, (14 * " _SZREG ")(sp)\n" \ |
| 100 | " " _REG_L " t6, (15 * " _SZREG ")(sp)\n" \ |
| 101 | " addi sp, sp, (16 * " _SZREG ")\n" \ |
| 102 | " jr ra\n"); |
| 103 | |
| 104 | |
| 105 | #ifdef _KERNEL |
| 106 | |
| 107 | #define MCOUNT_ENTER \ |
| 108 | s = (csr_sstatus_read() & SR_SIE) != 0; \ |
| 109 | csr_sstatus_clear(SR_SIE); // DISABLE_INTERRUPTS |
| 110 | |
| 111 | #define MCOUNT_EXIT \ |
| 112 | if (s) \ |
| 113 | csr_sstatus_set(SR_SIE); // ENABLE_INTERRUPTS |
| 114 | |
| 115 | #endif |
| 116 | |
| 117 | #endif /* _RISCV_PROFILE_H_ */ |