1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2006 Marcel Moolenaar 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef _MACHINE_GDB_MACHDEP_H_ 30 #define _MACHINE_GDB_MACHDEP_H_ 31 32 #ifdef BOOKE 33 #define PPC_GDB_NREGS0 1 34 #define PPC_GDB_NREGS4 (70 + 1) 35 #define PPC_GDB_NREGS8 (1 + 32) 36 #define PPC_GDB_NREGS16 0 37 38 #else 39 /* 40 * 0 - 32*GPR(4/8) 41 * 32 - 32*FPR(8) 42 * 64 - PC, PS (4/8) 43 * 66 - CR (4) 44 * 67 - LR, CTR (4/8) 45 * 69 - XER, FPSCR (4) 46 * 71 - 32*VR(16) 47 * 103 - VSCR, VRSAVE (4) 48 */ 49 50 #define PPC_REGNUM_R0 0 51 #define PPC_REGNUM_R31 (PPC_REGNUM_R0 + 31) 52 #define PPC_REGNUM_FR0 32 53 #define PPC_REGNUM_FR31 (PPC_REGNUM_FR0 + 31) 54 #define PPC_REGNUM_PC 64 55 #define PPC_REGNUM_PS 65 56 #define PPC_REGNUM_CR 66 57 #define PPC_REGNUM_LR 67 58 #define PPC_REGNUM_CTR 68 59 #define PPC_REGNUM_XER 69 60 #define PPC_REGNUM_FPSCR 70 61 #define PPC_REGNUM_VR0 71 62 #define PPC_REGNUM_VR31 (PPC_REGNUM_VR0 + 31) 63 64 #define PPC_GDB_NREGS0 0 65 66 #ifdef __powerpc64__ 67 #define PPC_GDB_NREGS4 5 68 #define PPC_GDB_NREGS8 (64 + 4) 69 #else 70 #define PPC_GDB_NREGS4 (32 + 7 + 2) 71 #define PPC_GDB_NREGS8 32 72 #endif 73 74 #define PPC_GDB_NREGS16 32 75 #endif 76 77 #define GDB_NREGS (PPC_GDB_NREGS0 + PPC_GDB_NREGS4 + \ 78 PPC_GDB_NREGS8 + PPC_GDB_NREGS16) 79 #define GDB_REG_PC 64 80 81 #define GDB_BUFSZ (PPC_GDB_NREGS4 * 8 + \ 82 PPC_GDB_NREGS8 * 16 + \ 83 PPC_GDB_NREGS16 * 32) 84 85 static __inline size_t 86 gdb_cpu_regsz(int regnum) 87 { 88 89 #ifdef BOOKE 90 if (regnum == 70) 91 return (0); 92 if (regnum == 71 || regnum >= 73) 93 return (8); 94 #else 95 #ifdef __powerpc64__ 96 if ((regnum >= PPC_REGNUM_R0 && regnum <= PPC_REGNUM_PS) || 97 regnum == PPC_REGNUM_LR || regnum == PPC_REGNUM_CTR) 98 return (8); 99 #else 100 if (regnum >= PPC_REGNUM_FR0 && regnum <= PPC_REGNUM_FR31) 101 return (8); 102 #endif 103 if (regnum >= PPC_REGNUM_VR0 && regnum <= PPC_REGNUM_VR31) 104 return (16); 105 #endif 106 return (4); 107 } 108 109 static __inline int 110 gdb_cpu_query(void) 111 { 112 113 return (0); 114 } 115 116 static __inline void * 117 gdb_begin_write(void) 118 { 119 120 return (NULL); 121 } 122 123 static __inline void 124 gdb_end_write(void *arg __unused) 125 { 126 127 } 128 129 static __inline void 130 gdb_cpu_stop_reason(int type __unused, int code __unused) 131 { 132 133 } 134 135 void *gdb_cpu_getreg(int, size_t *); 136 void gdb_cpu_setreg(int, void *); 137 int gdb_cpu_signal(int, int); 138 void gdb_cpu_do_offsets(void); 139 140 #endif /* !_MACHINE_GDB_MACHDEP_H_ */ 141