1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2020 The FreeBSD Foundation 5 * 6 * This software was developed by Mitchell Horne under sponsorship from 7 * the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #ifndef _MACHINE_GDB_MACHDEP_H_ 32 #define _MACHINE_GDB_MACHDEP_H_ 33 34 #define GDB_BUFSZ 4096 35 #define GDB_NREGS 68 36 #define GDB_REG_X0 0 37 #define GDB_REG_X29 29 38 #define GDB_REG_LR 30 39 #define GDB_REG_SP 31 40 #define GDB_REG_PC 32 41 #define GDB_REG_CSPR 33 42 #define GDB_REG_V0 34 43 #define GDB_REG_V31 65 44 #define GDB_REG_FPSR 66 45 #define GDB_REG_FPCR 67 46 _Static_assert(GDB_BUFSZ >= (GDB_NREGS * 16), "buffer fits 'g' regs"); 47 48 static __inline size_t 49 gdb_cpu_regsz(int regnum) 50 { 51 if (regnum == GDB_REG_CSPR || regnum == GDB_REG_FPSR || 52 regnum == GDB_REG_FPCR) 53 return (4); 54 else if (regnum >= GDB_REG_V0 && regnum <= GDB_REG_V31) 55 return (16); 56 57 return (8); 58 } 59 60 static __inline int 61 gdb_cpu_query(void) 62 { 63 return (0); 64 } 65 66 static __inline void * 67 gdb_begin_write(void) 68 { 69 return (NULL); 70 } 71 72 static __inline void 73 gdb_end_write(void *arg __unused) 74 { 75 } 76 77 void *gdb_cpu_getreg(int, size_t *); 78 void gdb_cpu_setreg(int, void *); 79 int gdb_cpu_signal(int, int); 80 81 #endif /* !_MACHINE_GDB_MACHDEP_H_ */ 82