/*-
* Copyright (c) 2014 Andrew Turner
* Copyright (c) 2014-2015 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Semihalf 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_DB_MACHDEP_H_
#define _MACHINE_DB_MACHDEP_H_
#include <machine/armreg.h>
#include <machine/frame.h>
#include <machine/trap.h>
#define T_BREAKPOINT (EXCP_BRK)
#define T_WATCHPOINT (EXCP_WATCHPT_EL1)
typedef vm_offset_t db_addr_t;
typedef long db_expr_t;
#define PC_REGS() ((db_addr_t)kdb_thrctx->pcb_pc)
#define BKPT_INST (0xd4200000)
#define BKPT_SIZE (4)
#define BKPT_SET(inst) (BKPT_INST)
#define BKPT_SKIP do { \
kdb_frame->tf_elr += BKPT_SIZE; \
} while (0)
#define db_clear_single_step kdb_cpu_clear_singlestep
#define db_set_single_step kdb_cpu_set_singlestep
#define IS_BREAKPOINT_TRAP(type, code) (type == T_BREAKPOINT)
#define IS_WATCHPOINT_TRAP(type, code) (type == T_WATCHPOINT)
#define inst_trap_return(ins) (0)
/* ret */
#define inst_return(ins) (((ins) & 0xfffffc1fu) == 0xd65f0000)
#define inst_call(ins) (((ins) & 0xfc000000u) == 0x94000000u || /* BL */ \
((ins) & 0xfffffc1fu) == 0xd63f0000u) /* BLR */
#define inst_load(ins) ({ \
uint32_t tmp_instr = db_get_value(PC_REGS(), sizeof(uint32_t), FALSE); \
is_load_instr(tmp_instr); \
})
#define inst_store(ins) ({ \
uint32_t tmp_instr = db_get_value(PC_REGS(), sizeof(uint32_t), FALSE); \
is_store_instr(tmp_instr); \
})
#define is_load_instr(ins) ((((ins) & 0x3b000000u) == 0x18000000u) || /* literal */ \
(((ins) & 0x3f400000u) == 0x08400000u) || /* exclusive */ \
(((ins) & 0x3bc00000u) == 0x28400000u) || /* no-allocate pair */ \
((((ins) & 0x3b200c00u) == 0x38000400u) && \
(((ins) & 0x3be00c00u) != 0x38000400u) && \
(((ins) & 0xffe00c00u) != 0x3c800400u)) || /* immediate post-indexed */ \
((((ins) & 0x3b200c00u) == 0x38000c00u) && \
(((ins) & 0x3be00c00u) != 0x38000c00u) && \
(((ins) & 0xffe00c00u) != 0x3c800c00u)) || /* immediate pre-indexed */ \
((((ins) & 0x3b200c00u) == 0x38200800u) && \
(((ins) & 0x3be00c00u) != 0x38200800u) && \
(((ins) & 0xffe00c00u) != 0x3ca00c80u)) || /* register offset */ \
((((ins) & 0x3b200c00u) == 0x38000800u) && \
(((ins) & 0x3be00c00u) != 0x38000800u)) || /* unprivileged */ \
((((ins) & 0x3b200c00u) == 0x38000000u) && \
(((ins) & 0x3be00c00u) != 0x38000000u) && \
(((ins) & 0xffe00c00u) != 0x3c800000u)) || /* unscaled immediate */ \
((((ins) & 0x3b000000u) == 0x39000000u) && \
(((ins) & 0x3bc00000u) != 0x39000000u) && \
(((ins) & 0xffc00000u) != 0x3d800000u)) && /* unsigned immediate */ \
(((ins) & 0x3bc00000u) == 0x28400000u) || /* pair (offset) */ \
(((ins) & 0x3bc00000u) == 0x28c00000u) || /* pair (post-indexed) */ \
(((ins) & 0x3bc00000u) == 0x29800000u)) /* pair (pre-indexed) */
#define is_store_instr(ins) ((((ins) & 0x3f400000u) == 0x08000000u) || /* exclusive */ \
(((ins) & 0x3bc00000u) == 0x28000000u) || /* no-allocate pair */ \
((((ins) & 0x3be00c00u) == 0x38000400u) || \
(((ins) & 0xffe00c00u) == 0x3c800400u)) || /* immediate post-indexed */ \
((((ins) & 0x3be00c00u) == 0x38000c00u) || \
(((ins) & 0xffe00c00u) == 0x3c800c00u)) || /* immediate pre-indexed */ \
((((ins) & 0x3be00c00u) == 0x38200800u) || \
(((ins) & 0xffe00c00u) == 0x3ca00800u)) || /* register offset */ \
(((ins) & 0x3be00c00u) == 0x38000800u) || /* unprivileged */ \
((((ins) & 0x3be00c00u) == 0x38000000u) || \
(((ins) & 0xffe00c00u) == 0x3c800000u)) || /* unscaled immediate */ \
((((ins) & 0x3bc00000u) == 0x39000000u) || \
(((ins) & 0xffc00000u) == 0x3d800000u)) || /* unsigned immediate */ \
(((ins) & 0x3bc00000u) == 0x28000000u) || /* pair (offset) */ \
(((ins) & 0x3bc00000u) == 0x28800000u) || /* pair (post-indexed) */ \
(((ins) & 0x3bc00000u) == 0x29800000u)) /* pair (pre-indexed) */
#define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + 4))
#define DB_SMALL_VALUE_MAX (0x7fffffff)
#define DB_SMALL_VALUE_MIN (-0x40001)
#define DB_ELFSIZE 64
#endif /* !_MACHINE_DB_MACHDEP_H_ */
