The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/arm/arm/machdep_kdb.c

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    1 /*      $NetBSD: arm32_machdep.c,v 1.44 2004/03/24 15:34:47 atatat Exp $        */
    2 
    3 /*-
    4  * Copyright (c) 2004 Olivier Houchard
    5  * Copyright (c) 1994-1998 Mark Brinicombe.
    6  * Copyright (c) 1994 Brini.
    7  * All rights reserved.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  */
   30 
   31 #include "opt_ddb.h"
   32 
   33 #include <sys/cdefs.h>
   34 __FBSDID("$FreeBSD$");
   35 
   36 #include <sys/param.h>
   37 #include <sys/proc.h>
   38 #include <sys/systm.h>
   39 
   40 #include <machine/cpu.h>
   41 #include <machine/reg.h>
   42 
   43 #ifdef DDB
   44 #include <ddb/ddb.h>
   45 
   46 DB_SHOW_COMMAND(cp15, db_show_cp15)
   47 {
   48         u_int reg;
   49 
   50         reg = cp15_midr_get();
   51         db_printf("Cpu ID: 0x%08x\n", reg);
   52         reg = cp15_ctr_get();
   53         db_printf("Current Cache Lvl ID: 0x%08x\n",reg);
   54 
   55         reg = cp15_sctlr_get();
   56         db_printf("Ctrl: 0x%08x\n",reg);
   57         reg = cp15_actlr_get();
   58         db_printf("Aux Ctrl: 0x%08x\n",reg);
   59 
   60         reg = cp15_id_pfr0_get();
   61         db_printf("Processor Feat 0: 0x%08x\n", reg);
   62         reg = cp15_id_pfr1_get();
   63         db_printf("Processor Feat 1: 0x%08x\n", reg);
   64         reg = cp15_id_dfr0_get();
   65         db_printf("Debug Feat 0: 0x%08x\n", reg);
   66         reg = cp15_id_afr0_get();
   67         db_printf("Auxiliary Feat 0: 0x%08x\n", reg);
   68         reg = cp15_id_mmfr0_get();
   69         db_printf("Memory Model Feat 0: 0x%08x\n", reg);
   70         reg = cp15_id_mmfr1_get();
   71         db_printf("Memory Model Feat 1: 0x%08x\n", reg);
   72         reg = cp15_id_mmfr2_get();
   73         db_printf("Memory Model Feat 2: 0x%08x\n", reg);
   74         reg = cp15_id_mmfr3_get();
   75         db_printf("Memory Model Feat 3: 0x%08x\n", reg);
   76         reg = cp15_ttbr_get();
   77         db_printf("TTB0: 0x%08x\n", reg);
   78 }
   79 
   80 DB_SHOW_COMMAND(vtop, db_show_vtop)
   81 {
   82         u_int reg;
   83 
   84         if (have_addr) {
   85                 cp15_ats1cpr_set(addr);
   86                 reg = cp15_par_get();
   87                 db_printf("Physical address reg: 0x%08x\n",reg);
   88         } else
   89                 db_printf("show vtop <virt_addr>\n");
   90 }
   91 #endif /* DDB */
   92 
   93 int
   94 fill_regs(struct thread *td, struct reg *regs)
   95 {
   96         struct trapframe *tf = td->td_frame;
   97         bcopy(&tf->tf_r0, regs->r, sizeof(regs->r));
   98         regs->r_sp = tf->tf_usr_sp;
   99         regs->r_lr = tf->tf_usr_lr;
  100         regs->r_pc = tf->tf_pc;
  101         regs->r_cpsr = tf->tf_spsr;
  102         return (0);
  103 }
  104 
  105 int
  106 fill_fpregs(struct thread *td, struct fpreg *regs)
  107 {
  108         bzero(regs, sizeof(*regs));
  109         return (0);
  110 }
  111 
  112 int
  113 set_regs(struct thread *td, struct reg *regs)
  114 {
  115         struct trapframe *tf = td->td_frame;
  116 
  117         bcopy(regs->r, &tf->tf_r0, sizeof(regs->r));
  118         tf->tf_usr_sp = regs->r_sp;
  119         tf->tf_usr_lr = regs->r_lr;
  120         tf->tf_pc = regs->r_pc;
  121         tf->tf_spsr &=  ~PSR_FLAGS;
  122         tf->tf_spsr |= regs->r_cpsr & PSR_FLAGS;
  123         return (0);
  124 }
  125 
  126 int
  127 set_fpregs(struct thread *td, struct fpreg *regs)
  128 {
  129         return (0);
  130 }
  131 
  132 int
  133 fill_dbregs(struct thread *td, struct dbreg *regs)
  134 {
  135 
  136         bzero(regs, sizeof(*regs));
  137         return (0);
  138 }
  139 
  140 int
  141 set_dbregs(struct thread *td, struct dbreg *regs)
  142 {
  143         return (0);
  144 }

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