db_interface.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*-
    2  * Copyright (c) 2015 The FreeBSD Foundation
    3  * All rights reserved.
    4  *
    5  * This software was developed by Semihalf under
    6  * the sponsorship of the FreeBSD Foundation.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD: releng/11.2/sys/riscv/riscv/db_interface.c 296614 2016-03-10 15:51:43Z br $");
   32 #include <sys/param.h>
   33 #include <sys/proc.h>
   34 #include <vm/vm.h>
   35 #include <vm/pmap.h>
   36 #include <vm/vm_map.h>
   37 
   38 #ifdef KDB
   39 #include <sys/kdb.h>
   40 #endif
   41 
   42 #include <ddb/ddb.h>
   43 #include <ddb/db_variables.h>
   44 
   45 #include <machine/cpu.h>
   46 #include <machine/pcb.h>
   47 #include <machine/stack.h>
   48 #include <machine/vmparam.h>
   49 
   50 static int
   51 db_frame(struct db_variable *vp, db_expr_t *valuep, int op)
   52 {
   53         long *reg;
   54 
   55         if (kdb_frame == NULL)
   56                 return (0);
   57 
   58         reg = (long *)((uintptr_t)kdb_frame + (db_expr_t)vp->valuep);
   59         if (op == DB_VAR_GET)
   60                 *valuep = *reg;
   61         else
   62                 *reg = *valuep;
   63         return (1);
   64 }
   65 
   66 #define DB_OFFSET(x)    (db_expr_t *)offsetof(struct trapframe, x)
   67 struct db_variable db_regs[] = {
   68         { "ra",         DB_OFFSET(tf_ra),       db_frame },
   69         { "sp",         DB_OFFSET(tf_sp),       db_frame },
   70         { "gp",         DB_OFFSET(tf_gp),       db_frame },
   71         { "tp",         DB_OFFSET(tf_tp),       db_frame },
   72         { "t0",         DB_OFFSET(tf_t[0]),     db_frame },
   73         { "t1",         DB_OFFSET(tf_t[1]),     db_frame },
   74         { "t2",         DB_OFFSET(tf_t[2]),     db_frame },
   75         { "t3",         DB_OFFSET(tf_t[3]),     db_frame },
   76         { "t4",         DB_OFFSET(tf_t[4]),     db_frame },
   77         { "t5",         DB_OFFSET(tf_t[5]),     db_frame },
   78         { "t6",         DB_OFFSET(tf_t[6]),     db_frame },
   79         { "s0",         DB_OFFSET(tf_s[0]),     db_frame },
   80         { "s1",         DB_OFFSET(tf_s[1]),     db_frame },
   81         { "s2",         DB_OFFSET(tf_s[2]),     db_frame },
   82         { "s3",         DB_OFFSET(tf_s[3]),     db_frame },
   83         { "s4",         DB_OFFSET(tf_s[4]),     db_frame },
   84         { "s5",         DB_OFFSET(tf_s[5]),     db_frame },
   85         { "s6",         DB_OFFSET(tf_s[6]),     db_frame },
   86         { "s7",         DB_OFFSET(tf_s[7]),     db_frame },
   87         { "s8",         DB_OFFSET(tf_s[8]),     db_frame },
   88         { "s9",         DB_OFFSET(tf_s[9]),     db_frame },
   89         { "s10",        DB_OFFSET(tf_s[10]),    db_frame },
   90         { "s11",        DB_OFFSET(tf_s[11]),    db_frame },
   91         { "a0",         DB_OFFSET(tf_a[0]),     db_frame },
   92         { "a1",         DB_OFFSET(tf_a[1]),     db_frame },
   93         { "a2",         DB_OFFSET(tf_a[2]),     db_frame },
   94         { "a3",         DB_OFFSET(tf_a[3]),     db_frame },
   95         { "a4",         DB_OFFSET(tf_a[4]),     db_frame },
   96         { "a5",         DB_OFFSET(tf_a[5]),     db_frame },
   97         { "a6",         DB_OFFSET(tf_a[6]),     db_frame },
   98         { "a7",         DB_OFFSET(tf_a[7]),     db_frame },
   99         { "sepc",       DB_OFFSET(tf_sepc),     db_frame },
  100         { "sstatus",    DB_OFFSET(tf_sstatus),  db_frame },
  101         { "sbadaddr",   DB_OFFSET(tf_sbadaddr), db_frame },
  102         { "scause",     DB_OFFSET(tf_scause),   db_frame },
  103 };
  104 
  105 struct db_variable *db_eregs = db_regs + nitems(db_regs);
  106 
  107 void
  108 db_show_mdpcpu(struct pcpu *pc)
  109 {
  110 }
  111 
  112 /*
  113  * Read bytes from kernel address space for debugger.
  114  */
  115 int
  116 db_read_bytes(vm_offset_t addr, size_t size, char *data)
  117 {
  118         jmp_buf jb;
  119         void *prev_jb;
  120         const char *src;
  121         int ret;
  122 
  123         prev_jb = kdb_jmpbuf(jb);
  124         ret = setjmp(jb);
  125 
  126         if (ret == 0) {
  127                 src = (const char *)addr;
  128                 while (size-- > 0)
  129                         *data++ = *src++;
  130         }
  131         (void)kdb_jmpbuf(prev_jb);
  132 
  133         return (ret);
  134 }
  135 
  136 /*
  137  * Write bytes to kernel address space for debugger.
  138  */
  139 int
  140 db_write_bytes(vm_offset_t addr, size_t size, char *data)
  141 {
  142         jmp_buf jb;
  143         void *prev_jb;
  144         char *dst;
  145         int ret;
  146 
  147         prev_jb = kdb_jmpbuf(jb);
  148         ret = setjmp(jb);
  149         if (ret == 0) {
  150                 dst = (char *)addr;
  151                 while (size-- > 0)
  152                         *dst++ = *data++;
  153 
  154                 fence();
  155 
  156                 /* Clean D-cache and invalidate I-cache */
  157                 cpu_dcache_wb_range(addr, (vm_size_t)size);
  158                 cpu_icache_sync_range(addr, (vm_size_t)size);
  159         }
  160         (void)kdb_jmpbuf(prev_jb);
  161 
  162         return (ret);
  163 }

Cache object: 12982d86e817d9778ade5f91f79544d3

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/riscv/riscv/db_interface.c

FreeBSD/Linux Kernel Cross Reference
sys/riscv/riscv/db_interface.c