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📄 apic_vector.s(6.78 KB)
📄 atpic_vector.s(2.63 KB)
📄 bios.c(19.81 KB)
📄 bioscall.s(3.97 KB)
📄 bpf_jit_machdep.c(13.33 KB)
📄 bpf_jit_machdep.h(11.54 KB)
📄 copyout.c(11.91 KB)
📄 copyout_fast.s(6.35 KB)
📄 db_disasm.c(42.43 KB)
📄 db_interface.c(2.84 KB)
📄 db_trace.c(18.78 KB)
📄 elan-mmcr.c(12.2 KB)
📄 elf_machdep.c(7.52 KB)
📄 exception.s(16.3 KB)
📄 gdb_machdep.c(3.46 KB)
📄 genassym.c(8.88 KB)
📄 geode.c(8.86 KB)
📄 in_cksum.c(12.03 KB)
📄 initcpu.c(22.28 KB)
📄 io.c(1.82 KB)
📄 k6_mem.c(5.23 KB)
📄 locore.s(11.27 KB)
📄 longrun.c(8.97 KB)
📄 machdep.c(85.6 KB)
📄 mem.c(6.46 KB)
📄 minidump_machdep.c(1.93 KB)
📄 minidump_machdep_base.c(8.92 KB)
📄 minidump_machdep_nopae.c(1.7 KB)
📄 minidump_machdep_pae.c(1.72 KB)
📄 mp_clock.c(3.96 KB)
📄 mp_machdep.c(17.51 KB)
📄 mpboot.s(6.56 KB)
📄 npx.c(40.46 KB)
📄 perfmon.c(8.54 KB)
📄 pmap.c(166.3 KB)
📄 pmap_base.c(20.83 KB)
📄 pmap_nopae.c(1.85 KB)
📄 pmap_pae.c(1.89 KB)
📄 prof_machdep.c(11.04 KB)
📄 ptrace_machdep.c(4.76 KB)
📄 sigtramp.s(4.15 KB)
📄 support.s(11.06 KB)
📄 swtch.s(11.14 KB)
📄 sys_machdep.c(20.6 KB)
📄 trap.c(31.29 KB)
📄 uio_machdep.c(4.01 KB)
📄 vm86.c(20.95 KB)
📄 vm86bios.s(4.72 KB)
📄 vm_machdep.c(17.06 KB)

Editing: gdb_machdep.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2004 Marcel Moolenaar
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kdb.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/signal.h>

#include <machine/gdb_machdep.h>
#include <machine/pcb.h>
#include <machine/trap.h>
#include <machine/frame.h>
#include <machine/endian.h>

#include <gdb/gdb.h>

void *
gdb_cpu_getreg(int regnum, size_t *regsz)
{
	static uint32_t _kcodesel = GSEL(GCODE_SEL, SEL_KPL);
	static uint32_t _kdatasel = GSEL(GDATA_SEL, SEL_KPL);
	static uint32_t _kprivsel = GSEL(GPRIV_SEL, SEL_KPL);

*regsz = gdb_cpu_regsz(regnum);

if (kdb_thread == curthread) {
		switch (regnum) {
		case 0:	return (&kdb_frame->tf_eax);
		case 1:	return (&kdb_frame->tf_ecx);
		case 2:	return (&kdb_frame->tf_edx);
		case 9: return (&kdb_frame->tf_eflags);
		case 10: return (&kdb_frame->tf_cs);
		case 12: return (&kdb_frame->tf_ds);
		case 13: return (&kdb_frame->tf_es);
		case 14: return (&kdb_frame->tf_fs);
		}
	}
	switch (regnum) {
	case 3:  return (&kdb_thrctx->pcb_ebx);
	case 4:  return (&kdb_thrctx->pcb_esp);
	case 5:  return (&kdb_thrctx->pcb_ebp);
	case 6:  return (&kdb_thrctx->pcb_esi);
	case 7:  return (&kdb_thrctx->pcb_edi);
	case 8:  return (&kdb_thrctx->pcb_eip);
	case 10: return (&_kcodesel);
	case 11: return (&_kdatasel);
	case 12: return (&_kdatasel);
	case 13: return (&_kdatasel);
	case 14: return (&_kprivsel);
	case 15: return (&kdb_thrctx->pcb_gs);
	}
	return (NULL);
}

void
gdb_cpu_setreg(int regnum, void *val)
{

switch (regnum) {
	case GDB_REG_PC:
		kdb_thrctx->pcb_eip = *(register_t *)val;
		if (kdb_thread  == curthread)
			kdb_frame->tf_eip = *(register_t *)val;
	}
}

int
gdb_cpu_signal(int type, int code)
{

switch (type & ~T_USER) {
	case T_BPTFLT: return (SIGTRAP);
	case T_ARITHTRAP: return (SIGFPE);
	case T_PROTFLT: return (SIGSEGV);
	case T_TRCTRAP: return (SIGTRAP);
	case T_PAGEFLT: return (SIGSEGV);
	case T_DIVIDE: return (SIGFPE);
	case T_NMI: return (SIGTRAP);
	case T_FPOPFLT: return (SIGILL);
	case T_TSSFLT: return (SIGSEGV);
	case T_SEGNPFLT: return (SIGSEGV);
	case T_STKFLT: return (SIGSEGV);
	case T_XMMFLT: return (SIGFPE);
	}
	return (SIGEMT);
}

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Editing: gdb_machdep.c

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