gdb_machdep.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2021 Mitchell Horne <mhorne@FreeBSD.org>
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  *
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #ifndef _MACHINE_GDB_MACHDEP_H_
   30 #define _MACHINE_GDB_MACHDEP_H_
   31 
   32 #define GDB_BUFSZ               4096
   33 #define GDB_NREGS               33
   34 #define GDB_REG_ZERO            0
   35 #define GDB_REG_RA              1
   36 #define GDB_REG_SP              2
   37 #define GDB_REG_GP              3
   38 #define GDB_REG_TP              4
   39 #define GDB_REG_T0              5
   40 #define GDB_REG_FP              8
   41 #define GDB_REG_S1              9
   42 #define GDB_REG_A0              10
   43 #define GDB_REG_S2              18
   44 #define GDB_REG_T3              28
   45 #define GDB_REG_PC              32
   46 #define GDB_REG_CSR_BASE        65
   47 #define GDB_REG_SSTATUS         (GDB_REG_CSR_BASE + 0x100)
   48 #define GDB_REG_SCAUSE          (GDB_REG_CSR_BASE + 0x142)
   49 #define GDB_REG_STVAL           (GDB_REG_CSR_BASE + 0x143)
   50 _Static_assert(GDB_BUFSZ >= (GDB_NREGS * 8), "buffer fits 'g' regs");
   51 
   52 static __inline size_t
   53 gdb_cpu_regsz(int regnum __unused)
   54 {
   55 
   56         return (8);
   57 }
   58 
   59 static __inline int
   60 gdb_cpu_query(void)
   61 {
   62         return (0);
   63 }
   64 
   65 static __inline void *
   66 gdb_begin_write(void)
   67 {
   68 
   69         return (NULL);
   70 }
   71 
   72 static __inline void
   73 gdb_end_write(void *arg __unused)
   74 {
   75 
   76 }
   77 
   78 static __inline void
   79 gdb_cpu_stop_reason(int type __unused, int code __unused)
   80 {
   81 
   82 }
   83 
   84 void    *gdb_cpu_getreg(int, size_t *);
   85 void     gdb_cpu_setreg(int, void *);
   86 int      gdb_cpu_signal(int, int);
   87 
   88 #endif /* !_MACHINE_GDB_MACHDEP_H_ */

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

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