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ones implemented using assembly. o) Use TRAPF_USERMODE() consistently rather than USERMODE(). Eliminate <machine/psl.h> as a result. o) Use intr_*() rather than *intr(), consistently. o) Use register_t instead of u_int in some trap code. o) Merge some more endian-related macros to machine/asm.h from NetBSD. o) Add PTR_LI macro, which loads an address with the correct sign-extension for a pointer. o) Restore interrupts when bailing out due to an excessive IRQ in nexus_setup_intr(). o) Remove unused functions from psraccess.S. o) Enter temporary virtual entries for large memory access into the page tables rather than simply hoping they stay resident in the TLB and we don't need to do a refill for them. o) Abstract out large memory mapping setup/teardown using some macros. o) Do mips_dcache_wbinv_range() when using temporary virtual addresses just like we do when we can use the direct map.
99 lines
3.6 KiB
C
99 lines
3.6 KiB
C
/* $OpenBSD: db_machdep.h,v 1.2 1998/09/15 10:50:12 pefo Exp $ */
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/*
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* Copyright (c) 1998 Per Fogelstrom, Opsycon AB
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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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* 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed under OpenBSD by
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* Per Fogelstrom, Opsycon AB, Sweden.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* 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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* JNPR: db_machdep.h,v 1.7 2006/10/16 12:30:34 katta
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* $FreeBSD$
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*/
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#ifndef _MIPS_DB_MACHDEP_H_
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#define _MIPS_DB_MACHDEP_H_
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#include <machine/frame.h>
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#include <machine/trap.h>
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#include <machine/endian.h>
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typedef struct trapframe db_regs_t;
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extern db_regs_t ddb_regs; /* register state */
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typedef vm_offset_t db_addr_t; /* address - unsigned */
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typedef register_t db_expr_t; /* expression - signed */
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#if BYTE_ORDER == _BIG_ENDIAN
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#define BYTE_MSF (1)
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#endif
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#define SOFTWARE_SSTEP /* Need software single step */
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#define SOFTWARE_SSTEP_EMUL /* next_instr_address() emulates 100% */
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db_addr_t next_instr_address(db_addr_t, boolean_t);
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#define BKPT_SIZE (4)
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#define BKPT_SET(ins) (BREAK_DDB)
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#define DB_VALID_BREAKPOINT(addr) (((addr) & 3) == 0)
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#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAK)
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#define IS_WATCHPOINT_TRAP(type, code) (0) /* XXX mips3 watchpoint */
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#define PC_REGS() ((db_addr_t)kdb_thrctx->pcb_regs.pc)
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#define BKPT_SKIP \
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do { \
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if((db_get_value(kdb_frame->pc, sizeof(int), FALSE) & \
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~BREAK_VAL_MASK) == BREAK_INSTR) { \
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kdb_frame->pc += BKPT_SIZE; \
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kdb_thrctx->pcb_regs.pc += BKPT_SIZE; \
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} \
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} while (0);
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/*
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* Test of instructions to see class.
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*/
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#define IT_CALL 0x01
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#define IT_BRANCH 0x02
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#define IT_LOAD 0x03
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#define IT_STORE 0x04
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#define inst_branch(i) (db_inst_type(i) == IT_BRANCH)
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#define inst_trap_return(i) ((i) & 0)
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#define inst_call(i) (db_inst_type(i) == IT_CALL)
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#define inst_return(i) ((i) == 0x03e00008)
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#define inst_load(i) (db_inst_type(i) == IT_LOAD)
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#define inst_store(i) (db_inst_type(i) == IT_STORE)
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#define DB_SMALL_VALUE_MAX 0x7fffffff
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#define DB_SMALL_VALUE_MIN (-0x400001)
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int db_inst_type(int);
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db_addr_t branch_taken(int inst, db_addr_t pc);
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void stacktrace_subr(register_t pc, register_t sp, register_t ra, int (*)(const char *, ...));
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int kdbpeek(int *);
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#endif /* !_MIPS_DB_MACHDEP_H_ */
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