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NetBSD/sys/arch/mips/include/db_machdep.h

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Move platform db_trap callback from arch/mips into ddb as suggested by jhawk. This callback is used by platform code to manage things like watchdogs that should be disabled while in ddb. Done as a callback for processors such as mips that support lots of different systems.
2000-07-17 23:57:49 +04:00
/* $NetBSD: db_machdep.h,v 1.11 2000/07/17 19:57:49 jeffs Exp $ */
Typo in RCS id.
1997-07-07 07:57:55 +04:00
/*
* Copyright (c) 1997 Jonathan Stone (hereinafter referred to as the author)
* All rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Jonathan Stone for
* the NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*/
DDB for mips. Add DDB interface to /sys/arch/mips/mips.. Rework heuristic stack traceback to work with DDB. Add hooks to print exception log from DDB. Add hooks from pmax console drivers: call Debugger() after break from serial console, or 'DO' key from LK-xxx.
1997-07-07 07:54:24 +04:00
#ifndef _MIPS_DB_MACHDEP_H_
#define _MIPS_DB_MACHDEP_H_
<vm/vm_param.h> -> <uvm/uvm_param.h>
2000-06-26 18:58:58 +04:00
#include <uvm/uvm_param.h> /* XXX boolean_t */
DDB for mips. Add DDB interface to /sys/arch/mips/mips.. Rework heuristic stack traceback to work with DDB. Add hooks to print exception log from DDB. Add hooks from pmax console drivers: call Debugger() after break from serial console, or 'DO' key from LK-xxx.
1997-07-07 07:54:24 +04:00
#include <mips/trap.h> /* T_BREAK */
* Re-apply changes from rev 1.6 of sys/arch/mips/include/reg.h accidentally undone by rev 1.7: >redo pmax/include/reg.h >so that the definitions needed by locore.S are in a separate file, >pmax/include/regnum.h. * Add explicit `#include <mips/regnum.h>' where symbolic offsets into a mips trapframe or struct reg are used..
1997-07-19 13:54:23 +04:00
#include <mips/reg.h> /* register state */
#include <mips/regnum.h> /* symbolic register indices */
DDB for mips. Add DDB interface to /sys/arch/mips/mips.. Rework heuristic stack traceback to work with DDB. Add hooks to print exception log from DDB. Add hooks from pmax console drivers: call Debugger() after break from serial console, or 'DO' key from LK-xxx.
1997-07-07 07:54:24 +04:00
#include <mips/proc.h> /* register state */
- Complete vm_offset_t purge for mips processor. - bzero() -> memset() and bcopy() -> memcpy(). - Garbage collection in trap.c and db_interface.c.
1999-01-06 07:11:25 +03:00
typedef vaddr_t db_addr_t; /* address - unsigned */
DDB for mips. Add DDB interface to /sys/arch/mips/mips.. Rework heuristic stack traceback to work with DDB. Add hooks to print exception log from DDB. Add hooks from pmax console drivers: call Debugger() after break from serial console, or 'DO' key from LK-xxx.
1997-07-07 07:54:24 +04:00
typedef long db_expr_t; /* expression - signed */
typedef struct frame db_regs_t;
db_regs_t ddb_regs; /* register state */
#define DDB_REGS (&ddb_regs)
#define PC_REGS(regs) ((db_addr_t)(regs)->f_regs[PC])
Define PC_ADVANCE() to advance the PC around the break instruction only if the break instruction is still there. This works around a problem with the software single step in DDB not recognizing the temporary breakpoint set to emulate the single step.
1997-11-19 00:13:17 +03:00
#define PC_ADVANCE(regs) do { \
if ((db_get_value((regs)->f_regs[PC], sizeof(int), FALSE) & \
0xfc00003f) == 0xd) \
(regs)->f_regs[PC] += BKPT_SIZE; \
Pull in geocast mips ddb improvements and start bringing in kgdb support. Add ddb support for QED opcodes, fill in enough routines so "next" usually works, kdbpoke support for any size. Add callback that ports can hook when entering and leaving ddb. This can be used for things like turning off watchdogs while in ddb.
2000-07-17 11:04:19 +04:00
} while(0)
Define PC_ADVANCE() to advance the PC around the break instruction only if the break instruction is still there. This works around a problem with the software single step in DDB not recognizing the temporary breakpoint set to emulate the single step.
1997-11-19 00:13:17 +03:00
Pull in geocast mips ddb improvements and start bringing in kgdb support. Add ddb support for QED opcodes, fill in enough routines so "next" usually works, kdbpoke support for any size. Add callback that ports can hook when entering and leaving ddb. This can be used for things like turning off watchdogs while in ddb.
2000-07-17 11:04:19 +04:00
/* Similar to PC_ADVANCE(), except only advance on cpu_Debugger()'s bpt */
#define PC_BREAK_ADVANCE(regs) do { \
if (db_get_value((regs)->f_regs[PC], sizeof(int), FALSE) == 0xd) \
(regs)->f_regs[PC] += BKPT_SIZE; \
} while(0)
#define BKPT_INST 0x0001000D
DDB for mips. Add DDB interface to /sys/arch/mips/mips.. Rework heuristic stack traceback to work with DDB. Add hooks to print exception log from DDB. Add hooks from pmax console drivers: call Debugger() after break from serial console, or 'DO' key from LK-xxx.
1997-07-07 07:54:24 +04:00
#define BKPT_SIZE (4) /* size of breakpoint inst */
#define BKPT_SET(inst) (BKPT_INST)
#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAK)
#define IS_WATCHPOINT_TRAP(type, code) (0) /* XXX mips3 watchpoint */
/*
* Interface to disassembly (shared with mdb)
*/
db_addr_t db_disasm_insn __P((int insn, db_addr_t loc, boolean_t altfmt));
/*
* Entrypoints to DDB for kernel, keyboard drivers, init hook
*/
* Create mips_reg_t data type to allow register size to be decoupled from long or int or long long. Define macros in asm.h to facilitate choosing these on a port by port basis. * Create <machine/pubassym.h> mechanism to allow jmp_buf structure size to be calculated at system build time. * Define _MIPS_BSD_SIM macro which specifies what calling style is appropritae for the architecture. For 64-bit oriented systems set the Status Register to allow 64-bit instructions. * Remove UADDR related macros because kernel U structure is now mapped normally. * Separate cpu.h into cpu.h and cpuarch.h to keep things neat. * Add support for QED 52xx processors
1999-01-14 21:45:45 +03:00
void kdb_kbd_trap __P((db_regs_t *));
Pull in geocast mips ddb improvements and start bringing in kgdb support. Add ddb support for QED opcodes, fill in enough routines so "next" usually works, kdbpoke support for any size. Add callback that ports can hook when entering and leaving ddb. This can be used for things like turning off watchdogs while in ddb.
2000-07-17 11:04:19 +04:00
void db_set_ddb_regs __P((int type, mips_reg_t *));
* Create mips_reg_t data type to allow register size to be decoupled from long or int or long long. Define macros in asm.h to facilitate choosing these on a port by port basis. * Create <machine/pubassym.h> mechanism to allow jmp_buf structure size to be calculated at system build time. * Define _MIPS_BSD_SIM macro which specifies what calling style is appropritae for the architecture. For 64-bit oriented systems set the Status Register to allow 64-bit instructions. * Remove UADDR related macros because kernel U structure is now mapped normally. * Separate cpu.h into cpu.h and cpuarch.h to keep things neat. * Add support for QED 52xx processors
1999-01-14 21:45:45 +03:00
int kdb_trap __P((int type, mips_reg_t *));
DDB for mips. Add DDB interface to /sys/arch/mips/mips.. Rework heuristic stack traceback to work with DDB. Add hooks to print exception log from DDB. Add hooks from pmax console drivers: call Debugger() after break from serial console, or 'DO' key from LK-xxx.
1997-07-07 07:54:24 +04:00
void db_machine_init __P((void));
Pull in geocast mips ddb improvements and start bringing in kgdb support. Add ddb support for QED opcodes, fill in enough routines so "next" usually works, kdbpoke support for any size. Add callback that ports can hook when entering and leaving ddb. This can be used for things like turning off watchdogs while in ddb.
2000-07-17 11:04:19 +04:00
/*
* Constants for KGDB.
*/
typedef mips_reg_t kgdb_reg_t;
#define KGDB_NUMREGS 90
#define KGDB_BUFLEN 1024
DDB for mips. Add DDB interface to /sys/arch/mips/mips.. Rework heuristic stack traceback to work with DDB. Add hooks to print exception log from DDB. Add hooks from pmax console drivers: call Debugger() after break from serial console, or 'DO' key from LK-xxx.
1997-07-07 07:54:24 +04:00
/*
* MIPS cpus have no hardware single-step.
*/
#define SOFTWARE_SSTEP
Pull in geocast mips ddb improvements and start bringing in kgdb support. Add ddb support for QED opcodes, fill in enough routines so "next" usually works, kdbpoke support for any size. Add callback that ports can hook when entering and leaving ddb. This can be used for things like turning off watchdogs while in ddb.
2000-07-17 11:04:19 +04:00
#define inst_trap_return(ins) ((ins)&0)
DDB for mips. Add DDB interface to /sys/arch/mips/mips.. Rework heuristic stack traceback to work with DDB. Add hooks to print exception log from DDB. Add hooks from pmax console drivers: call Debugger() after break from serial console, or 'DO' key from LK-xxx.
1997-07-07 07:54:24 +04:00
boolean_t inst_branch __P((int inst));
boolean_t inst_call __P((int inst));
Pull in geocast mips ddb improvements and start bringing in kgdb support. Add ddb support for QED opcodes, fill in enough routines so "next" usually works, kdbpoke support for any size. Add callback that ports can hook when entering and leaving ddb. This can be used for things like turning off watchdogs while in ddb.
2000-07-17 11:04:19 +04:00
boolean_t inst_return __P((int inst));
boolean_t inst_load __P((int inst));
boolean_t inst_store __P((int inst));
DDB for mips. Add DDB interface to /sys/arch/mips/mips.. Rework heuristic stack traceback to work with DDB. Add hooks to print exception log from DDB. Add hooks from pmax console drivers: call Debugger() after break from serial console, or 'DO' key from LK-xxx.
1997-07-07 07:54:24 +04:00
boolean_t inst_unconditional_flow_transfer __P((int inst));
db_addr_t branch_taken __P((int inst, db_addr_t pc, db_regs_t *regs));
db_addr_t next_instr_address __P((db_addr_t pc, boolean_t bd));
/*
Pull in geocast mips ddb improvements and start bringing in kgdb support. Add ddb support for QED opcodes, fill in enough routines so "next" usually works, kdbpoke support for any size. Add callback that ports can hook when entering and leaving ddb. This can be used for things like turning off watchdogs while in ddb.
2000-07-17 11:04:19 +04:00
* We have machine-dependent commands.
DDB for mips. Add DDB interface to /sys/arch/mips/mips.. Rework heuristic stack traceback to work with DDB. Add hooks to print exception log from DDB. Add hooks from pmax console drivers: call Debugger() after break from serial console, or 'DO' key from LK-xxx.
1997-07-07 07:54:24 +04:00
*/
#define DB_MACHINE_COMMANDS
#endif /* _MIPS_DB_MACHDEP_H_ */