d72e944812
Add the MD portion required for the gdb stub. Reviewed by: jhb (earlier version) Discussed with: jrtc27 MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D33734
89 lines
2.5 KiB
C
89 lines
2.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2021 Mitchell Horne <mhorne@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _MACHINE_GDB_MACHDEP_H_
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#define _MACHINE_GDB_MACHDEP_H_
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#define GDB_BUFSZ 4096
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#define GDB_NREGS 33
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#define GDB_REG_ZERO 0
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#define GDB_REG_RA 1
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#define GDB_REG_SP 2
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#define GDB_REG_GP 3
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#define GDB_REG_TP 4
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#define GDB_REG_T0 5
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#define GDB_REG_FP 8
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#define GDB_REG_S1 9
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#define GDB_REG_A0 10
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#define GDB_REG_S2 18
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#define GDB_REG_T3 28
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#define GDB_REG_PC 32
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#define GDB_REG_CSR_BASE 65
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#define GDB_REG_SSTATUS (GDB_REG_CSR_BASE + 0x100)
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#define GDB_REG_SCAUSE (GDB_REG_CSR_BASE + 0x142)
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#define GDB_REG_STVAL (GDB_REG_CSR_BASE + 0x143)
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_Static_assert(GDB_BUFSZ >= (GDB_NREGS * 8), "buffer fits 'g' regs");
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static __inline size_t
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gdb_cpu_regsz(int regnum __unused)
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{
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return (8);
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}
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static __inline int
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gdb_cpu_query(void)
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{
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return (0);
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}
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static __inline void *
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gdb_begin_write(void)
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{
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return (NULL);
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}
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static __inline void
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gdb_end_write(void *arg __unused)
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{
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}
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static __inline void
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gdb_cpu_stop_reason(int type __unused, int code __unused)
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{
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}
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void *gdb_cpu_getreg(int, size_t *);
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void gdb_cpu_setreg(int, void *);
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int gdb_cpu_signal(int, int);
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#endif /* !_MACHINE_GDB_MACHDEP_H_ */
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