FreeBSD/Linux Kernel Cross Reference
sys/arm64/include/gdb_machdep.h

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2020 The FreeBSD Foundation
      *
      * This software was developed by Mitchell Horne under sponsorship from
      * the FreeBSD Foundation.
      *
      * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     * notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     * notice, this list of conditions and the following disclaimer in the
     * documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    
    #ifndef _MACHINE_GDB_MACHDEP_H_
    #define _MACHINE_GDB_MACHDEP_H_
    
    #define GDB_BUFSZ       4096
    #define GDB_NREGS       68
    #define GDB_REG_X0      0
    #define GDB_REG_X29     29
    #define GDB_REG_LR      30
    #define GDB_REG_SP      31
    #define GDB_REG_PC      32
    #define GDB_REG_CSPR    33
    #define GDB_REG_V0      34
    #define GDB_REG_V31     65
    #define GDB_REG_FPSR    66
    #define GDB_REG_FPCR    67
    _Static_assert(GDB_BUFSZ >= (GDB_NREGS * 16), "buffer fits 'g' regs");
    
    static __inline size_t
    gdb_cpu_regsz(int regnum)
    {
            if (regnum == GDB_REG_CSPR || regnum == GDB_REG_FPSR ||
                regnum == GDB_REG_FPCR)
                    return (4);
            else if (regnum >= GDB_REG_V0 && regnum <= GDB_REG_V31)
                    return (16);
    
            return (8);
    }
    
    static __inline int
    gdb_cpu_query(void)
    {
            return (0);
    }
    
    static __inline void *
    gdb_begin_write(void)
    {
            return (NULL);
    }
    
    static __inline void
    gdb_end_write(void *arg __unused)
    {
    }
    
    void *gdb_cpu_getreg(int, size_t *);
    void gdb_cpu_setreg(int, void *);
    int gdb_cpu_signal(int, int);
    void gdb_cpu_stop_reason(int, int);
    
    #endif /* !_MACHINE_GDB_MACHDEP_H_ */

Cache object: 3b9012f709b78f23e8451500b1d539af