72d44f31a6
backend improves over the old GDB support in the following ways: o Unified implementation with minimal MD code. o A simple interface for devices to register themselves as debug ports, ala consoles. o Compression by using run-length encoding. o Implements GDB threading support.
71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
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* Copyright (c) 2004 Marcel Moolenaar
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* All rights reserved.
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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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*
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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 AUTHORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 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/systm.h>
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#include <sys/kdb.h>
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#include <sys/kernel.h>
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#include <sys/signal.h>
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#include <machine/asm.h>
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#include <machine/gdb_machdep.h>
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#include <machine/pcb.h>
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#include <machine/reg.h>
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#include <gdb/gdb.h>
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void *
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gdb_cpu_getreg(int regnum, size_t *regsz)
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{
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static uint64_t synth;
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*regsz = gdb_cpu_regsz(regnum);
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switch (regnum) {
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/* 0-7: g0-g7 */
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/* 8-15: o0-o7 */
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case 14:
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synth = kdb_thrctx->pcb_sp - CCFSZ;
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return (&synth);
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/* 16-23: l0-l7 */
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/* 24-31: i0-i7 */
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case 30: return (&kdb_thrctx->pcb_sp);
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/* 32-63: f0-f31 */
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/* 64-79: f32-f62 (16 double FP) */
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case 80: return (&kdb_thrctx->pcb_pc);
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}
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return (NULL);
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}
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void
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gdb_cpu_setreg(int regnum, register_t val)
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{
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switch (regnum) {
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}
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}
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