/* Xstormy16 cpu description.
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007,
- 2008, 2009 Free Software Foundation, Inc.
+ 2008, 2009, 2010 Free Software Foundation, Inc.
Contributed by Red Hat, Inc.
-This file is part of GCC.
+ 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 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.
+ 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/>. */
+ 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/>. */
\f
-/* Driver configuration */
+/* Driver configuration. */
-/* Defined in svr4.h. */
-#undef ASM_SPEC
+#undef ASM_SPEC
#define ASM_SPEC ""
+#undef LINK_SPEC
+#define LINK_SPEC "%{h*} %{v:-V} \
+ %{static:-Bstatic} %{shared:-shared} %{symbolic:-Bsymbolic}"
+
/* For xstormy16:
- If -msim is specified, everything is built and linked as for the sim.
- If -T is specified, that linker script is used, and it should provide
appropriate libraries.
- If neither is specified, everything is built as for the sim, but no
- I/O support is assumed.
-
-*/
-#undef LIB_SPEC
+ I/O support is assumed. */
+#undef LIB_SPEC
#define LIB_SPEC "-( -lc %{msim:-lsim}%{!msim:%{!T*:-lnosys}} -)"
-/* Defined in svr4.h. */
-#undef STARTFILE_SPEC
+#undef STARTFILE_SPEC
#define STARTFILE_SPEC "crt0.o%s crti.o%s crtbegin.o%s"
-/* Defined in svr4.h. */
-#undef ENDFILE_SPEC
+#undef ENDFILE_SPEC
#define ENDFILE_SPEC "crtend.o%s crtn.o%s"
-/* Defined in svr4.h for host compilers. */
-/* #define MD_EXEC_PREFIX "" */
-
-/* Defined in svr4.h for host compilers. */
-/* #define MD_STARTFILE_PREFIX "" */
-
\f
-/* Run-time target specifications */
+/* Run-time target specifications. */
-#define TARGET_CPU_CPP_BUILTINS() do { \
- builtin_define_std ("xstormy16"); \
- builtin_assert ("machine=xstormy16"); \
- builtin_assert ("cpu=xstormy16"); \
-} while (0)
+#define TARGET_CPU_CPP_BUILTINS() \
+ do \
+ { \
+ builtin_define_std ("xstormy16"); \
+ builtin_assert ("machine=xstormy16"); \
+ builtin_assert ("cpu=xstormy16"); \
+ } \
+ while (0)
#define TARGET_VERSION fprintf (stderr, " (xstormy16 cpu core)");
-
-#define CAN_DEBUG_WITHOUT_FP
-
\f
-/* Storage Layout */
+/* Storage Layout. */
#define BITS_BIG_ENDIAN 1
#define UNITS_PER_WORD 2
-#define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \
-do { \
- if (GET_MODE_CLASS (MODE) == MODE_INT \
- && GET_MODE_SIZE (MODE) < 2) \
- (MODE) = HImode; \
-} while (0)
+#define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \
+ do \
+ { \
+ if (GET_MODE_CLASS (MODE) == MODE_INT \
+ && GET_MODE_SIZE (MODE) < 2) \
+ (MODE) = HImode; \
+ } \
+ while (0)
#define PARM_BOUNDARY 16
#define BIGGEST_ALIGNMENT 16
-/* Defined in svr4.h. */
-/* #define MAX_OFILE_ALIGNMENT */
-
#define DATA_ALIGNMENT(TYPE, ALIGN) \
(TREE_CODE (TYPE) == ARRAY_TYPE \
&& TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
#define STRICT_ALIGNMENT 1
-/* Defined in svr4.h. */
#define PCC_BITFIELD_TYPE_MATTERS 1
\f
-/* Layout of Source Language Data Types */
+/* Layout of Source Language Data Types. */
#define INT_TYPE_SIZE 16
#define DEFAULT_SIGNED_CHAR 0
-/* Defined in svr4.h. */
#define SIZE_TYPE "unsigned int"
-/* Defined in svr4.h. */
#define PTRDIFF_TYPE "int"
-/* Defined in svr4.h, to "long int". */
-/* #define WCHAR_TYPE "long int" */
+#undef WCHAR_TYPE
+#define WCHAR_TYPE "long int"
-/* Defined in svr4.h. */
-#undef WCHAR_TYPE_SIZE
+#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32
-/* Define this macro if the type of Objective-C selectors should be `int'.
-
- If this macro is not defined, then selectors should have the type `struct
- objc_selector *'. */
-/* #define OBJC_INT_SELECTORS */
-
\f
-/* Register Basics */
+/* Register Basics. */
#define FIRST_PSEUDO_REGISTER 19
{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1 }
\f
-/* Order of allocation of registers */
+/* Order of allocation of registers. */
#define REG_ALLOC_ORDER { 7, 6, 5, 4, 3, 2, 1, 0, 9, 8, 10, 11, 12, 13, 14, 15, 16 }
\f
-/* How Values Fit in Registers */
+/* How Values Fit in Registers. */
#define HARD_REGNO_NREGS(REGNO, MODE) \
((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
#define MODES_TIEABLE_P(MODE1, MODE2) ((MODE1) != BImode && (MODE2) != BImode)
\f
-/* Register Classes */
+/* Register Classes. */
enum reg_class
{
#define IRA_COVER_CLASSES \
{ \
- GENERAL_REGS, LIM_REG_CLASSES \
+ GENERAL_REGS, LIM_REG_CLASSES \
}
#define REG_CLASS_NAMES \
'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P'
'Q', 'R', 'S', 'T', 'U'
'V', 'X'
- 'g', 'i', 'm', 'n', 'o', 'p', 'r', 's' */
+ 'g', 'i', 'm', 'n', 'o', 'p', 'r', 's'. */
#define REG_CLASS_FROM_LETTER(CHAR) \
( (CHAR) == 'a' ? R0_REGS \
#define REGNO_OK_FOR_INDEX_P(NUM) REGNO_OK_FOR_BASE_P (NUM)
-/* This declaration must be present. */
#define PREFERRED_RELOAD_CLASS(X, CLASS) \
xstormy16_preferred_reload_class (X, CLASS)
#define SECONDARY_RELOAD_CLASS(CLASS, MODE, X) \
xstormy16_secondary_reload_class (CLASS, MODE, X)
-/* Normally the compiler avoids choosing registers that have been explicitly
- mentioned in the rtl as spill registers (these registers are normally those
- used to pass parameters and return values). However, some machines have so
- few registers of certain classes that there would not be enough registers to
- use as spill registers if this were done.
-
- Define `SMALL_REGISTER_CLASSES' to be an expression with a nonzero value on
- these machines. When this macro has a nonzero value, the compiler allows
- registers explicitly used in the rtl to be used as spill registers but
- avoids extending the lifetime of these registers.
-
- It is always safe to define this macro with a nonzero value, but if you
- unnecessarily define it, you will reduce the amount of optimizations that
- can be performed in some cases. If you do not define this macro with a
- nonzero value when it is required, the compiler will run out of spill
- registers and print a fatal error message. For most machines, you should
- not define this macro at all. */
-/* #define SMALL_REGISTER_CLASSES */
-
-/* This declaration is required. */
#define CLASS_MAX_NREGS(CLASS, MODE) \
((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
-/* If defined, a C expression for a class that contains registers which the
- compiler must always access in a mode that is the same size as the mode in
- which it loaded the register.
-
- For the example, loading 32-bit integer or floating-point objects into
- floating-point registers on the Alpha extends them to 64-bits. Therefore
- loading a 64-bit object and then storing it as a 32-bit object does not
- store the low-order 32-bits, as would be the case for a normal register.
- Therefore, `alpha.h' defines this macro as `FLOAT_REGS'. */
-/* #define CLASS_CANNOT_CHANGE_SIZE */
-
#define CONST_OK_FOR_LETTER_P(VALUE, C) \
( (C) == 'I' ? (VALUE) >= 0 && (VALUE) <= 3 \
: (C) == 'J' ? exact_log2 (VALUE) != -1 \
xstormy16_extra_constraint_p (VALUE, C)
\f
-/* Basic Stack Layout */
+/* Basic Stack Layout. */
/* We want to use post-increment instructions to push things on the stack,
because we don't have any pre-increment ones. */
#define ARG_POINTER_REGNUM 18
\f
-/* Eliminating the Frame Pointer and the Arg Pointer */
+/* Eliminating the Frame Pointer and the Arg Pointer. */
#define ELIMINABLE_REGS \
{ \
(OFFSET) = xstormy16_initial_elimination_offset (FROM, TO)
\f
-/* Passing Function Arguments on the Stack */
+/* Passing Function Arguments on the Stack. */
#define PUSH_ROUNDING(BYTES) (((BYTES) + 1) & ~1)
-#define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
-
\f
-/* Function Arguments in Registers */
+/* Function Arguments in Registers. */
-#define NUM_ARGUMENT_REGISTERS 6
+#define NUM_ARGUMENT_REGISTERS 6
#define FIRST_ARGUMENT_REGISTER 2
#define XSTORMY16_WORD_SIZE(TYPE, MODE) \
+ 1) \
/ 2)
-#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
- xstormy16_function_arg (CUM, MODE, TYPE, NAMED)
-
/* For this platform, the value of CUMULATIVE_ARGS is the number of words
of arguments that have been passed in registers so far. */
#define CUMULATIVE_ARGS int
#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
(CUM) = 0
-#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
- ((CUM) = xstormy16_function_arg_advance (CUM, MODE, TYPE, NAMED))
-
#define FUNCTION_ARG_REGNO_P(REGNO) \
((REGNO) >= FIRST_ARGUMENT_REGISTER \
&& (REGNO) < FIRST_ARGUMENT_REGISTER + NUM_ARGUMENT_REGISTERS)
\f
-/* How Scalar Function Values are Returned */
+/* How Scalar Function Values are Returned. */
/* The number of the hard register that is used to return a scalar value from a
function call. */
#define FUNCTION_VALUE_REGNO_P(REGNO) ((REGNO) == RETURN_VALUE_REGNUM)
\f
-/* Function Entry and Exit */
+/* Function Entry and Exit. */
#define EPILOGUE_USES(REGNO) \
xstormy16_epilogue_uses (REGNO)
#define FUNCTION_PROFILER(FILE, LABELNO) xstormy16_function_profiler ()
\f
-/* If the target has particular reasons why a function cannot be inlined,
- it may define the TARGET_CANNOT_INLINE_P. This macro takes one argument,
- the DECL describing the function. The function should NULL if the function
- *can* be inlined. Otherwise it should return a pointer to a string containing
- a message describing why the function could not be inlined. The message will
- displayed if the '-Winline' command line switch has been given. If the message
- contains a '%s' sequence, this will be replaced by the name of the function. */
-/* #define TARGET_CANNOT_INLINE_P(FN_DECL) xstormy16_cannot_inline_p (FN_DECL) */
-\f
/* Trampolines for Nested Functions. */
#define TRAMPOLINE_SIZE 8
#define TRAMPOLINE_ALIGNMENT 16
\f
-/* Define this macro to override the type used by the library routines to pick
- up arguments of type `float'. (By default, they use a union of `float' and
- `int'.)
-
- The obvious choice would be `float'--but that won't work with traditional C
- compilers that expect all arguments declared as `float' to arrive as
- `double'. To avoid this conversion, the library routines ask for the value
- as some other type and then treat it as a `float'. */
-/* #define FLOAT_ARG_TYPE */
-
-/* Define this macro to override the way library routines redesignate a `float'
- argument as a `float' instead of the type it was passed as. The default is
- an expression which takes the `float' field of the union. */
-/* #define FLOATIFY(PASSED_VALUE) */
-
-/* Define this macro to override the type used by the library routines to
- return values that ought to have type `float'. (By default, they use
- `int'.)
-
- The obvious choice would be `float'--but that won't work with traditional C
- compilers gratuitously convert values declared as `float' into `double'. */
-/* #define FLOAT_VALUE_TYPE */
-
-/* Define this macro to override the way the value of a `float'-returning
- library routine should be packaged in order to return it. These functions
- are actually declared to return type `FLOAT_VALUE_TYPE' (normally `int').
- These values can't be returned as type `float' because traditional C
- compilers would gratuitously convert the value to a `double'.
-
- A local variable named `intify' is always available when the macro `INTIFY'
- is used. It is a union of a `float' field named `f' and a field named `i'
- whose type is `FLOAT_VALUE_TYPE' or `int'.
-
- If you don't define this macro, the default definition works by copying the
- value through that union. */
-/* #define INTIFY(FLOAT_VALUE) */
-
-/* Define this macro as the name of the data type corresponding to `SImode' in
- the system's own C compiler.
-
- You need not define this macro if that type is `long int', as it usually is. */
-/* #define nongcc_SI_type */
-
-/* Define this macro as the name of the data type corresponding to the
- word_mode in the system's own C compiler.
-
- You need not define this macro if that type is `long int', as it usually is. */
-/* #define nongcc_word_type */
-
-/* Define these macros to supply explicit C statements to carry out various
- arithmetic operations on types `float' and `double' in the library routines
- in `libgcc1.c'. See that file for a full list of these macros and their
- arguments.
-
- On most machines, you don't need to define any of these macros, because the
- C compiler that comes with the system takes care of doing them. */
-/* #define perform_... */
-
-\f
-/* Addressing Modes */
+/* Addressing Modes. */
#define HAVE_POST_INCREMENT 1
/* On this chip, this is true if the address is valid with an offset
of 0 but not of 6, because in that case it cannot be used as an
address for DImode or DFmode, or if the address is a post-increment
- or pre-decrement address.
-*/
+ or pre-decrement address. */
#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \
- if (xstormy16_mode_dependent_address_p (ADDR)) \
+ if (xstormy16_mode_dependent_address_p (ADDR)) \
goto LABEL
#define LEGITIMATE_CONSTANT_P(X) 1
\f
-/* Describing Relative Costs of Operations */
+/* Describing Relative Costs of Operations. */
#define REGISTER_MOVE_COST(MODE, FROM, TO) 2
/* Output and Generation of Labels. */
#define SYMBOL_FLAG_XSTORMY16_BELOW100 (SYMBOL_FLAG_MACH_DEP << 0)
-#define ASM_OUTPUT_SYMBOL_REF(STREAM, SYMBOL) \
- do { \
- const char *rn = XSTR (SYMBOL, 0); \
- if (SYMBOL_REF_FUNCTION_P (SYMBOL)) \
- ASM_OUTPUT_LABEL_REF ((STREAM), rn); \
- else \
- assemble_name (STREAM, rn); \
- } while (0)
+#define ASM_OUTPUT_SYMBOL_REF(STREAM, SYMBOL) \
+ do \
+ { \
+ const char *rn = XSTR (SYMBOL, 0); \
+ \
+ if (SYMBOL_REF_FUNCTION_P (SYMBOL)) \
+ ASM_OUTPUT_LABEL_REF ((STREAM), rn); \
+ else \
+ assemble_name (STREAM, rn); \
+ } \
+ while (0)
#define ASM_OUTPUT_LABEL_REF(STREAM, NAME) \
-do { \
- fputs ("@fptr(", STREAM); \
- assemble_name (STREAM, NAME); \
- fputc (')', STREAM); \
-} while (0)
+ do \
+ { \
+ fputs ("@fptr(", STREAM); \
+ assemble_name (STREAM, NAME); \
+ fputc (')', STREAM); \
+ } \
+ while (0)
/* Globalizing directive for a label. */
#define GLOBAL_ASM_OP "\t.globl "
\f
-/* Macros Controlling Initialization Routines. */
-
-/* When you are using special sections for
- initialization and termination functions, this macro also controls how
- `crtstuff.c' and `libgcc2.c' arrange to run the initialization functions.
-
- Defined in svr4.h. */
-/* #define INIT_SECTION_ASM_OP */
-
-/* Define this macro as a C statement to output on the stream STREAM the
- assembler code to arrange to call the function named NAME at initialization
- time.
-
- Assume that NAME is the name of a C function generated automatically by the
- compiler. This function takes no arguments. Use the function
- `assemble_name' to output the name NAME; this performs any system-specific
- syntactic transformations such as adding an underscore.
-
- If you don't define this macro, nothing special is output to arrange to call
- the function. This is correct when the function will be called in some
- other manner--for example, by means of the `collect2' program, which looks
- through the symbol table to find these functions by their names.
-
- Defined in svr4.h. */
-/* #define ASM_OUTPUT_CONSTRUCTOR(STREAM, NAME) */
-
-/* This is like `ASM_OUTPUT_CONSTRUCTOR' but used for termination functions
- rather than initialization functions.
-
- Defined in svr4.h. */
-/* #define ASM_OUTPUT_DESTRUCTOR(STREAM, NAME) */
-
-/* Define this macro if the system uses ELF format object files.
-
- Defined in svr4.h. */
-/* #define OBJECT_FORMAT_ELF */
-
-\f
/* Output of Assembler Instructions. */
#define REGISTER_NAMES \
#define DWARF2_UNWIND_INFO 0
#define DWARF_CIE_DATA_ALIGNMENT 1
-/* Don't use __builtin_setjmp for unwinding, since it's tricky to get
- at the high 16 bits of an address. */
-#define DONT_USE_BUILTIN_SETJMP
+#undef DONT_USE_BUILTIN_SETJMP
#define JMP_BUF_SIZE 8
\f
/* Assembler Commands for Alignment. */
/* Macros Affecting all Debug Formats. */
/* Defined in svr4.h. */
-#undef PREFERRED_DEBUGGING_TYPE
+#undef PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
\f
#define FUNCTION_MODE HImode
#define NO_IMPLICIT_EXTERN_C
-
-/* Defined in svr4.h. */
-#define HANDLE_SYSV_PRAGMA 1
-
-/* Define this if the target system supports the function `atexit' from the
- ANSI C standard. If this is not defined, and `INIT_SECTION_ASM_OP' is not
- defined, a default `exit' function will be provided to support C++.
-
- Defined by svr4.h */
-/* #define HAVE_ATEXIT */
-
-/* A C statement which is executed by the Haifa scheduler after it has scheduled
- an insn from the ready list. FILE is either a null pointer, or a stdio stream
- to write any debug output to. VERBOSE is the verbose level provided by
- -fsched-verbose-<n>. INSN is the instruction that was scheduled. MORE is the
- number of instructions that can be issued in the current cycle. This macro
- is responsible for updating the value of MORE (typically by (MORE)--). */
-/* #define MD_SCHED_VARIABLE_ISSUE (FILE, VERBOSE, INSN, MORE) */
-
-/* End of xstormy16.h */
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