/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2021 Mitchell Horne <mhorne@FreeBSD.org>
*
* 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 33
#define GDB_REG_ZERO 0
#define GDB_REG_RA 1
#define GDB_REG_SP 2
#define GDB_REG_GP 3
#define GDB_REG_TP 4
#define GDB_REG_T0 5
#define GDB_REG_FP 8
#define GDB_REG_S1 9
#define GDB_REG_A0 10
#define GDB_REG_S2 18
#define GDB_REG_T3 28
#define GDB_REG_PC 32
#define GDB_REG_CSR_BASE 65
#define GDB_REG_SSTATUS (GDB_REG_CSR_BASE + 0x100)
#define GDB_REG_SCAUSE (GDB_REG_CSR_BASE + 0x142)
#define GDB_REG_STVAL (GDB_REG_CSR_BASE + 0x143)
_Static_assert(GDB_BUFSZ >= (GDB_NREGS * 8), "buffer fits 'g' regs");
static __inline size_t
gdb_cpu_regsz(int regnum __unused)
{
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)
{
}
static __inline void
gdb_cpu_stop_reason(int type __unused, int code __unused)
{
}
void *gdb_cpu_getreg(int, size_t *);
void gdb_cpu_setreg(int, void *);
int gdb_cpu_signal(int, int);
#endif /* !_MACHINE_GDB_MACHDEP_H_ */
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