mirror of https://github.com/F-Stack/f-stack.git
117 lines
3.5 KiB
C
117 lines
3.5 KiB
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);
|
|
}
|