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+/* Definitions for option handling for Renesas M32R cpu.
+ Copyright (C) 1996-2014 Free Software Foundation, Inc.
+
+ This file is part of GCC.
+
+ GCC 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, or (at your
+ option) any later version.
+
+ GCC 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 GCC; see the file COPYING3. If not see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef M32R_OPTS_H
+#define M32R_OPTS_H
+
+/* Code Models
+
+ Code models are used to select between two choices of two separate
+ possibilities (address space size, call insn to use):
+
+ small: addresses use 24 bits, use bl to make calls
+ medium: addresses use 32 bits, use bl to make calls (*1)
+ large: addresses use 32 bits, use seth/add3/jl to make calls (*2)
+
+ The fourth is "addresses use 24 bits, use seth/add3/jl to make calls" but
+ using this one doesn't make much sense.
+
+ (*1) The linker may eventually be able to relax seth/add3 -> ld24.
+ (*2) The linker may eventually be able to relax seth/add3/jl -> bl.
+
+ Internally these are recorded as TARGET_ADDR{24,32} and
+ TARGET_CALL{26,32}.
+
+ The __model__ attribute can be used to select the code model to use when
+ accessing particular objects. */
+
+enum m32r_model { M32R_MODEL_SMALL, M32R_MODEL_MEDIUM, M32R_MODEL_LARGE };
+
+#define TARGET_MODEL_SMALL (m32r_model_selected == M32R_MODEL_SMALL)
+#define TARGET_MODEL_MEDIUM (m32r_model_selected == M32R_MODEL_MEDIUM)
+#define TARGET_MODEL_LARGE (m32r_model_selected == M32R_MODEL_LARGE)
+#define TARGET_ADDR24 (m32r_model_selected == M32R_MODEL_SMALL)
+#define TARGET_ADDR32 (! TARGET_ADDR24)
+#define TARGET_CALL26 (! TARGET_CALL32)
+#define TARGET_CALL32 (m32r_model_selected == M32R_MODEL_LARGE)
+
+/* The default is the small model. */
+#ifndef M32R_MODEL_DEFAULT
+#define M32R_MODEL_DEFAULT M32R_MODEL_SMALL
+#endif
+
+/* Small Data Area
+
+ The SDA consists of sections .sdata, .sbss, and .scommon.
+ .scommon isn't a real section, symbols in it have their section index
+ set to SHN_M32R_SCOMMON, though support for it exists in the linker script.
+
+ Two switches control the SDA:
+
+ -G NNN - specifies the maximum size of variable to go in the SDA
+
+ -msdata=foo - specifies how such variables are handled
+
+ -msdata=none - small data area is disabled
+
+ -msdata=sdata - small data goes in the SDA, special code isn't
+ generated to use it, and special relocs aren't
+ generated
+
+ -msdata=use - small data goes in the SDA, special code is generated
+ to use the SDA and special relocs are generated
+
+ The SDA is not multilib'd, it isn't necessary.
+ MULTILIB_EXTRA_OPTS is set in tmake_file to -msdata=sdata so multilib'd
+ libraries have small data in .sdata/SHN_M32R_SCOMMON so programs that use
+ -msdata=use will successfully link with them (references in header files
+ will cause the compiler to emit code that refers to library objects in
+ .data). ??? There can be a problem if the user passes a -G value greater
+ than the default and a library object in a header file is that size.
+ The default is 8 so this should be rare - if it occurs the user
+ is required to rebuild the libraries or use a smaller value for -G. */
+
+/* Maximum size of variables that go in .sdata/.sbss.
+ The -msdata=foo switch also controls how small variables are handled. */
+#ifndef SDATA_DEFAULT_SIZE
+#define SDATA_DEFAULT_SIZE 8
+#endif
+
+enum m32r_sdata { M32R_SDATA_NONE, M32R_SDATA_SDATA, M32R_SDATA_USE };
+
+#define TARGET_SDATA_NONE (m32r_sdata_selected == M32R_SDATA_NONE)
+#define TARGET_SDATA_SDATA (m32r_sdata_selected == M32R_SDATA_SDATA)
+#define TARGET_SDATA_USE (m32r_sdata_selected == M32R_SDATA_USE)
+
+/* Default is to disable the SDA
+ [for upward compatibility with previous toolchains]. */
+#ifndef M32R_SDATA_DEFAULT
+#define M32R_SDATA_DEFAULT M32R_SDATA_NONE
+#endif
+
+#endif