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/* QNX Neutrino specific low level interface, for the remote server
for GDB.
Copyright (C) 2009-2020 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "server.h"
#include "nto-low.h"
#include "regdef.h"
#include "regcache.h"
#include <x86/context.h>
#include "gdbsupport/x86-xstate.h"
#include "arch/i386.h"
#include "x86-tdesc.h"
const unsigned char x86_breakpoint[] = { 0xCC };
#define x86_breakpoint_len 1
/* Returns offset in appropriate Neutrino's context structure.
Defined in x86/context.h.
GDBREGNO is index into regs_i386 array. It is autogenerated and
hopefully doesn't change. */
static int
nto_x86_register_offset (int gdbregno)
{
if (gdbregno >= 0 && gdbregno < 16)
{
X86_CPU_REGISTERS *dummy = (void*)0;
/* GPRs */
switch (gdbregno)
{
case 0:
return (int)&(dummy->eax);
case 1:
return (int)&(dummy->ecx);
case 2:
return (int)&(dummy->edx);
case 3:
return (int)&(dummy->ebx);
case 4:
return (int)&(dummy->esp);
case 5:
return (int)&(dummy->ebp);
case 6:
return (int)&(dummy->esi);
case 7:
return (int)&(dummy->edi);
case 8:
return (int)&(dummy->eip);
case 9:
return (int)&(dummy->efl);
case 10:
return (int)&(dummy->cs);
case 11:
return (int)&(dummy->ss);
#ifdef __SEGMENTS__
case 12:
return (int)&(dummy->ds);
case 13:
return (int)&(dummy->es);
case 14:
return (int)&(dummy->fs);
case 15:
return (int)&(dummy->gs);
#endif
default:
return -1;
}
}
return -1;
}
static void
nto_x86_arch_setup (void)
{
the_low_target.num_regs = 16;
struct target_desc *tdesc
= i386_create_target_description (X86_XSTATE_SSE_MASK, false, false);
init_target_desc (tdesc, i386_expedite_regs);
nto_tdesc = tdesc;
}
struct nto_target_ops the_low_target =
{
nto_x86_arch_setup,
0, /* num_regs */
nto_x86_register_offset,
x86_breakpoint,
x86_breakpoint_len
};
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