mirror of https://github.com/F-Stack/f-stack.git
163 lines
4.5 KiB
C
163 lines
4.5 KiB
C
/*-
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* Copyright (c) 2015 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Semihalf under
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* the sponsorship of the FreeBSD Foundation.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <vm/vm_map.h>
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#ifdef KDB
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#include <sys/kdb.h>
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#endif
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#include <ddb/ddb.h>
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#include <ddb/db_variables.h>
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#include <machine/cpu.h>
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#include <machine/pcb.h>
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#include <machine/stack.h>
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#include <machine/vmparam.h>
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static int
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db_frame(struct db_variable *vp, db_expr_t *valuep, int op)
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{
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long *reg;
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if (kdb_frame == NULL)
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return (0);
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reg = (long *)((uintptr_t)kdb_frame + (db_expr_t)vp->valuep);
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if (op == DB_VAR_GET)
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*valuep = *reg;
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else
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*reg = *valuep;
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return (1);
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}
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#define DB_OFFSET(x) (db_expr_t *)offsetof(struct trapframe, x)
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struct db_variable db_regs[] = {
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{ "spsr", DB_OFFSET(tf_spsr), db_frame },
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{ "x0", DB_OFFSET(tf_x[0]), db_frame },
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{ "x1", DB_OFFSET(tf_x[1]), db_frame },
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{ "x2", DB_OFFSET(tf_x[2]), db_frame },
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{ "x3", DB_OFFSET(tf_x[3]), db_frame },
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{ "x4", DB_OFFSET(tf_x[4]), db_frame },
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{ "x5", DB_OFFSET(tf_x[5]), db_frame },
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{ "x6", DB_OFFSET(tf_x[6]), db_frame },
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{ "x7", DB_OFFSET(tf_x[7]), db_frame },
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{ "x8", DB_OFFSET(tf_x[8]), db_frame },
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{ "x9", DB_OFFSET(tf_x[9]), db_frame },
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{ "x10", DB_OFFSET(tf_x[10]), db_frame },
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{ "x11", DB_OFFSET(tf_x[11]), db_frame },
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{ "x12", DB_OFFSET(tf_x[12]), db_frame },
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{ "x13", DB_OFFSET(tf_x[13]), db_frame },
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{ "x14", DB_OFFSET(tf_x[14]), db_frame },
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{ "x15", DB_OFFSET(tf_x[15]), db_frame },
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{ "x16", DB_OFFSET(tf_x[16]), db_frame },
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{ "x17", DB_OFFSET(tf_x[17]), db_frame },
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{ "x18", DB_OFFSET(tf_x[18]), db_frame },
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{ "x19", DB_OFFSET(tf_x[19]), db_frame },
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{ "x20", DB_OFFSET(tf_x[20]), db_frame },
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{ "x21", DB_OFFSET(tf_x[21]), db_frame },
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{ "x22", DB_OFFSET(tf_x[22]), db_frame },
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{ "x23", DB_OFFSET(tf_x[23]), db_frame },
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{ "x24", DB_OFFSET(tf_x[24]), db_frame },
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{ "x25", DB_OFFSET(tf_x[25]), db_frame },
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{ "x26", DB_OFFSET(tf_x[26]), db_frame },
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{ "x27", DB_OFFSET(tf_x[27]), db_frame },
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{ "x28", DB_OFFSET(tf_x[28]), db_frame },
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{ "x29", DB_OFFSET(tf_x[29]), db_frame },
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{ "lr", DB_OFFSET(tf_lr), db_frame },
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{ "elr", DB_OFFSET(tf_elr), db_frame },
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{ "sp", DB_OFFSET(tf_sp), db_frame },
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};
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struct db_variable *db_eregs = db_regs + nitems(db_regs);
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void
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db_show_mdpcpu(struct pcpu *pc)
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{
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}
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/*
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* Read bytes from kernel address space for debugger.
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*/
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int
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db_read_bytes(vm_offset_t addr, size_t size, char *data)
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{
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jmp_buf jb;
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void *prev_jb;
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const char *src;
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int ret;
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prev_jb = kdb_jmpbuf(jb);
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ret = setjmp(jb);
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if (ret == 0) {
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src = (const char *)addr;
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while (size-- > 0)
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*data++ = *src++;
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}
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(void)kdb_jmpbuf(prev_jb);
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return (ret);
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}
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/*
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* Write bytes to kernel address space for debugger.
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*/
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int
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db_write_bytes(vm_offset_t addr, size_t size, char *data)
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{
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jmp_buf jb;
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void *prev_jb;
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char *dst;
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int ret;
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prev_jb = kdb_jmpbuf(jb);
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ret = setjmp(jb);
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if (ret == 0) {
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dst = (char *)addr;
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while (size-- > 0)
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*dst++ = *data++;
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dsb(ish);
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/* Clean D-cache and invalidate I-cache */
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cpu_dcache_wb_range(addr, (vm_size_t)size);
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cpu_icache_sync_range(addr, (vm_size_t)size);
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}
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(void)kdb_jmpbuf(prev_jb);
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return (ret);
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}
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