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/* Copyright (C) 2009, 2010 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 "defs.h"
#include "osabi.h"
#include "amd64-tdep.h"
#include "solib.h"
#include "solib-target.h"
#include "gdbtypes.h"
/* The registers used to pass integer arguments during a function call. */
static int amd64_windows_dummy_call_integer_regs[] =
{
AMD64_RCX_REGNUM, /* %rcx */
AMD64_RDX_REGNUM, /* %rdx */
8, /* %r8 */
9 /* %r9 */
};
/* Implement the "classify" method in the gdbarch_tdep structure
for amd64-windows. */
static void
amd64_windows_classify (struct type *type, enum amd64_reg_class class[2])
{
switch (TYPE_CODE (type))
{
case TYPE_CODE_ARRAY:
/* Arrays are always passed by memory. */
class[0] = class[1] = AMD64_MEMORY;
break;
case TYPE_CODE_STRUCT:
case TYPE_CODE_UNION:
/* Struct/Union types whose size is 1, 2, 4, or 8 bytes
are passed as if they were integers of the same size.
Types of different sizes are passed by memory. */
if (TYPE_LENGTH (type) == 1
|| TYPE_LENGTH (type) == 2
|| TYPE_LENGTH (type) == 4
|| TYPE_LENGTH (type) == 8)
{
class[0] = AMD64_INTEGER;
class[1] = AMD64_NO_CLASS;
}
else
class[0] = class[1] = AMD64_MEMORY;
break;
default:
/* For all the other types, the conventions are the same as
with the System V ABI. */
amd64_classify (type, class);
}
}
static void
amd64_windows_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
amd64_init_abi (info, gdbarch);
/* On Windows, "long"s are only 32bit. */
set_gdbarch_long_bit (gdbarch, 32);
/* Function calls. */
tdep->call_dummy_num_integer_regs =
ARRAY_SIZE (amd64_windows_dummy_call_integer_regs);
tdep->call_dummy_integer_regs = amd64_windows_dummy_call_integer_regs;
tdep->classify = amd64_windows_classify;
set_solib_ops (gdbarch, &solib_target_so_ops);
}
void
_initialize_amd64_windows_tdep (void)
{
gdbarch_register_osabi (bfd_arch_i386, bfd_mach_x86_64, GDB_OSABI_CYGWIN,
amd64_windows_init_abi);
}
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