/* Definitions of target machine for GNU compiler, Argonaut ARC cpu.
- Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002
- Free Software Foundation, Inc.
+ Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2004, 2005,
+ 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
+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 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
-GNU CC is distributed in the hope that it will be useful,
+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 GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* ??? This is an old port, and is undoubtedly suffering from bit rot. */
/* Things to do:
- - PREDICATE_CODES
- incscc, decscc?
- print active compiler options in assembler output
*/
#define TARGET_VERSION fprintf (stderr, " (arc)")
/* Names to predefine in the preprocessor for this target machine. */
-#define CPP_PREDEFINES "-Acpu=arc -Amachine=arc -D__arc__"
-
-/* Additional flags for the preprocessor. */
-#define CPP_SPEC "\
-%{!mcpu=*:-D__base__} %{mcpu=base:-D__base__} \
-%{EB:-D__big_endian__} \
-"
+#define TARGET_CPU_CPP_BUILTINS() \
+ do \
+ { \
+ builtin_define ("__arc__"); \
+ if (TARGET_BIG_ENDIAN) \
+ builtin_define ("__big_endian__"); \
+ if (arc_cpu_type == 0) \
+ builtin_define ("__base__"); \
+ builtin_assert ("cpu=arc"); \
+ builtin_assert ("machine=arc"); \
+ } while (0)
/* Pass -mmangle-cpu if we get -mcpu=*.
Doing it this way lets one have it on as default with -mcpu=*,
#define ENDFILE_SPEC "crtfini.o%s"
\f
-/* Run-time compilation parameters selecting different hardware subsets. */
-
-extern int target_flags;
-
-/* Mangle all user symbols for the specified cpu.
- ARC's can be shipped in which a collection of cpus are coupled together.
- Each CPU may be different in some way, and thus we may need to distinguish
- code compiled for one to ensure it isn't linked with code compiled for
- another. */
-#define TARGET_MASK_MANGLE_CPU 1
-#define TARGET_MANGLE_CPU (target_flags & TARGET_MASK_MANGLE_CPU)
-
-#if 0
-/* Mangle libgcc symbols by adding a suffix for the specified cpu. */
-#define TARGET_MASK_MANGLE_CPU_LIBGCC 2
-#define TARGET_MANGLE_CPU_LIBGCC (target_flags & TARGET_MASK_MANGLE_CPU_LIBGCC)
-#endif
-
-/* Align loops to 32 byte boundaries (cache line size). */
-#define TARGET_MASK_ALIGN_LOOPS 4
-#define TARGET_ALIGN_LOOPS (target_flags & TARGET_MASK_ALIGN_LOOPS)
-
-/* Big Endian. */
-#define TARGET_MASK_BIG_ENDIAN 8
-#define TARGET_BIG_ENDIAN (target_flags & TARGET_MASK_BIG_ENDIAN)
-
-/* Turn off conditional execution optimization,
- so we can see how well it does, or in case it's buggy. */
-#define TARGET_MASK_NO_COND_EXEC 0x10
-#define TARGET_NO_COND_EXEC (target_flags & TARGET_MASK_NO_COND_EXEC)
-
-/* Macro to define tables used to set the flags.
- This is a list in braces of pairs in braces,
- each pair being { "NAME", VALUE }
- where VALUE is the bits to set or minus the bits to clear.
- An empty string NAME is used to identify the default VALUE. */
-
-#define TARGET_SWITCHES \
-{ \
- { "mangle-cpu", TARGET_MASK_MANGLE_CPU }, \
- { "no-mangle-cpu", -TARGET_MASK_MANGLE_CPU }, \
-/* { "mangle-cpu-libgcc", TARGET_MASK_MANGLE_CPU_LIBGCC }, */ \
-/* { "no-mangle-cpu-libgcc", -TARGET_MASK_MANGLE_CPU_LIBGCC }, */ \
- { "align-loops", TARGET_MASK_ALIGN_LOOPS }, \
- { "no-align-loops", -TARGET_MASK_ALIGN_LOOPS }, \
- { "big-endian", TARGET_MASK_BIG_ENDIAN }, \
- { "little-endian", -TARGET_MASK_BIG_ENDIAN }, \
- { "no-cond-exec", TARGET_MASK_NO_COND_EXEC }, \
- SUBTARGET_SWITCHES \
- { "", TARGET_DEFAULT } \
-}
-
-#define TARGET_DEFAULT (0)
-
-#define SUBTARGET_SWITCHES
-
/* Instruction set characteristics.
These are internal macros, set by the appropriate -mcpu= option. */
-/* Non-zero means the cpu has a barrel shifter. */
+/* Nonzero means the cpu has a barrel shifter. */
#define TARGET_SHIFTER 0
-extern const char *arc_cpu_string;
-extern const char *arc_text_string,*arc_data_string,*arc_rodata_string;
-
-#define TARGET_OPTIONS \
-{ \
- { "cpu=", &arc_cpu_string }, \
- { "text=", &arc_text_string }, \
- { "data=", &arc_data_string }, \
- { "rodata=", &arc_rodata_string }, \
-}
-
/* Which cpu we're compiling for. */
extern int arc_cpu_type;
/* Check if CPU is an extension and set `arc_cpu_type' and `arc_mangle_cpu'
- appropriately. The result should be non-zero if the cpu is recognized,
+ appropriately. The result should be nonzero if the cpu is recognized,
otherwise zero. This is intended to be redefined in a cover file.
- This is used by arc_init. */
+ This is used by arc_handle_option. */
#define ARC_EXTENSION_CPU(cpu) 0
-/* Sometimes certain combinations of command options do not make
- sense on a particular target machine. You can define a macro
- `OVERRIDE_OPTIONS' to take account of this. This macro, if
- defined, is executed once just after all the command options have
- been parsed.
-
- Don't use this macro to turn on various extra optimizations for
- `-O'. That is what `OPTIMIZATION_OPTIONS' is for. */
-
-
-#define OVERRIDE_OPTIONS \
-do { \
- /* These need to be done at start up. It's convenient to do them here. */ \
- arc_init (); \
-} while (0)
\f
/* Target machine storage layout. */
numbered. */
#define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN)
-/* Define this to set the endianness to use in libgcc2.c, which can
- not depend on target_flags. */
-#ifdef __big_endian__
-#define LIBGCC2_WORDS_BIG_ENDIAN 1
-#else
-#define LIBGCC2_WORDS_BIG_ENDIAN 0
-#endif
-
/* Width of a word, in units (bytes). */
#define UNITS_PER_WORD 4
(MODE) = SImode; \
}
-/* Define this macro if the promotion described by `PROMOTE_MODE'
- should also be done for outgoing function arguments. */
-#define PROMOTE_FUNCTION_ARGS
-
-/* Likewise, if the function return value is promoted. */
-#define PROMOTE_FUNCTION_RETURN
-
/* Allocation boundary (in *bits*) for storing arguments in argument list. */
#define PARM_BOUNDARY 32
/* Every structure's size must be a multiple of this. */
#define STRUCTURE_SIZE_BOUNDARY 8
-/* A bitfield declared as `int' forces `int' alignment for the struct. */
+/* A bit-field declared as `int' forces `int' alignment for the struct. */
#define PCC_BITFIELD_TYPE_MATTERS 1
/* No data type wants to be aligned rounder than this. */
1, 1, 1, 1, 1, 1 }
/* If defined, an initializer for a vector of integers, containing the
- numbers of hard registers in the order in which GNU CC should
+ numbers of hard registers in the order in which GCC should
prefer to use them (from most preferred to least). */
#define REG_ALLOC_ORDER \
{ 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 0, 1, \
Since they use reg_renumber, they are safe only once reg_renumber
has been allocated, which happens in local-alloc.c. */
#define REGNO_OK_FOR_BASE_P(REGNO) \
-((REGNO) < 29 || (unsigned) reg_renumber[REGNO] < 29)
+((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32)
#define REGNO_OK_FOR_INDEX_P(REGNO) \
-((REGNO) < 29 || (unsigned) reg_renumber[REGNO] < 29)
-
-/* Given an rtx X being reloaded into a reg required to be
- in class CLASS, return the class of reg to actually use.
- In general this is just CLASS; but on some machines
- in some cases it is preferable to use a more restrictive class. */
-#define PREFERRED_RELOAD_CLASS(X,CLASS) \
-(CLASS)
+((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32)
/* Return the maximum number of consecutive registers
needed to represent mode MODE in a register of class CLASS. */
/* local to this file */
#define LARGE_INT(X) \
((X) >= (-(HOST_WIDE_INT) 0x7fffffff - 1) \
- && (X) <= (unsigned HOST_WIDE_INT) 0xffffffff)
+ && (unsigned HOST_WIDE_INT)(X) <= (unsigned HOST_WIDE_INT) 0xffffffff)
#define CONST_OK_FOR_LETTER_P(VALUE, C) \
((C) == 'I' ? SMALL_INT (VALUE) \
Here VALUE is the CONST_DOUBLE rtx itself. */
/* 'G' is used for integer values for the multiplication insns where the
operands are extended from 4 bytes to 8 bytes.
- 'H' is used when any 64 bit constant is allowed. */
+ 'H' is used when any 64-bit constant is allowed. */
#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
((C) == 'G' ? arc_double_limm_p (VALUE) \
: (C) == 'H' ? 1 \
/* ??? This currently isn't used. Waiting for PIC. */
#if 0
#define EXTRA_CONSTRAINT(VALUE, C) \
-((C) == 'R' ? (SYMBOL_REF_FLAG (VALUE) || GET_CODE (VALUE) == LABEL_REF) \
+((C) == 'R' ? (SYMBOL_REF_FUNCTION_P (VALUE) || GET_CODE (VALUE) == LABEL_REF) \
: 0)
#endif
\f
pointer to a smaller address. */
#define STACK_GROWS_DOWNWARD
-/* Define this if the nominal address of the stack frame
+/* Define this to nonzero if the nominal address of the stack frame
is at the high-address end of the local variables;
that is, each additional local variable allocated
goes at a more negative offset in the frame. */
-#define FRAME_GROWS_DOWNWARD
+#define FRAME_GROWS_DOWNWARD 1
/* Offset within stack frame to start allocating local variables at.
If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
not be a register used by the prologue. */
#define STATIC_CHAIN_REGNUM 24
-/* A C expression which is nonzero if a function must have and use a
- frame pointer. This expression is evaluated in the reload pass.
- If its value is nonzero the function will have a frame pointer. */
-#define FRAME_POINTER_REQUIRED \
-(current_function_calls_alloca)
-
/* C statement to store the difference between the frame pointer
and the stack pointer values immediately after the function prologue. */
#define INITIAL_FRAME_POINTER_OFFSET(VAR) \
\f
/* Function argument passing. */
-/* When a prototype says `char' or `short', really pass an `int'. */
-#define PROMOTE_PROTOTYPES 1
-
/* If defined, the maximum amount of space required for outgoing
arguments will be computed and placed into the variable
- `current_function_outgoing_args_size'. No space will be pushed
+ `crtl->outgoing_args_size'. No space will be pushed
onto the stack for each call; instead, the function prologue should
increase the stack frame size by this amount. */
#define ACCUMULATE_OUTGOING_ARGS 1
-/* Value is the number of bytes of arguments automatically
- popped when returning from a subroutine call.
- FUNDECL is the declaration node of the function (as a tree),
- FUNTYPE is the data type of the function (as a tree),
- or for a library call it is an identifier node for the subroutine name.
- SIZE is the number of bytes of arguments passed on the stack. */
-#define RETURN_POPS_ARGS(DECL, FUNTYPE, SIZE) 0
-
/* Define a data type for recording info about an argument list
during the scan of that argument list. This data type should
hold all necessary information about the function itself
/* Initialize a variable CUM of type CUMULATIVE_ARGS
for a call to a function whose data type is FNTYPE.
For a library call, FNTYPE is 0. */
-#define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT) \
+#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \
((CUM) = 0)
/* The number of registers used for parameter passing. Local to this file. */
a reg. This includes arguments that have to be passed by reference as the
pointer to them is passed in a reg if one is available (and that is what
we're given).
- When passing arguments NAMED is always 1. When receiving arguments NAMED
- is 1 for each argument except the last in a stdarg/varargs function. In
- a stdarg function we want to treat the last named arg as named. In a
- varargs function we want to treat the last named arg (which is
- `__builtin_va_alist') as unnamed.
This macro is only used in this file. */
-#define PASS_IN_REG_P(CUM, MODE, TYPE, NAMED) \
-((!current_function_varargs || (NAMED)) \
- && (CUM) < MAX_ARC_PARM_REGS \
+#define PASS_IN_REG_P(CUM, MODE, TYPE) \
+((CUM) < MAX_ARC_PARM_REGS \
&& ((ROUND_ADVANCE_CUM ((CUM), (MODE), (TYPE)) \
+ ROUND_ADVANCE_ARG ((MODE), (TYPE)) \
<= MAX_ARC_PARM_REGS)))
/* On the ARC the first MAX_ARC_PARM_REGS args are normally in registers
and the rest are pushed. */
#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
-(PASS_IN_REG_P ((CUM), (MODE), (TYPE), (NAMED)) \
+(PASS_IN_REG_P ((CUM), (MODE), (TYPE)) \
? gen_rtx_REG ((MODE), ROUND_ADVANCE_CUM ((CUM), (MODE), (TYPE))) \
: 0)
-/* A C expression for the number of words, at the beginning of an
- argument, must be put in registers. The value must be zero for
- arguments that are passed entirely in registers or that are entirely
- pushed on the stack.
-
- On some machines, certain arguments must be passed partially in
- registers and partially in memory. On these machines, typically the
- first @var{n} words of arguments are passed in registers, and the rest
- on the stack. If a multi-word argument (a @code{double} or a
- structure) crosses that boundary, its first few words must be passed
- in registers and the rest must be pushed. This macro tells the
- compiler when this occurs, and how many of the words should go in
- registers. */
-#define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) 0
-
-/* A C expression that indicates when an argument must be passed by
- reference. If nonzero for an argument, a copy of that argument is
- made in memory and a pointer to the argument is passed instead of
- the argument itself. The pointer is passed in whatever way is
- appropriate for passing a pointer to that type. */
-/* All aggregates and arguments greater than 8 bytes are passed this way. */
-#define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \
-(TYPE \
- && (AGGREGATE_TYPE_P (TYPE) \
- || int_size_in_bytes (TYPE) > 8))
-
-/* A C expression that indicates when it is the called function's
- responsibility to make copies of arguments passed by reference.
- If the callee can determine that the argument won't be modified, it can
- avoid the copy. */
-/* ??? We'd love to be able to use NAMED here. Unfortunately, it doesn't
- include the last named argument so we keep track of the args ourselves. */
-
-#define FUNCTION_ARG_CALLEE_COPIES(CUM, MODE, TYPE, NAMED) \
-FUNCTION_ARG_PASS_BY_REFERENCE ((CUM), (MODE), (TYPE), (NAMED))
-
/* Update the data in CUM to advance over an argument
of mode MODE and data type TYPE.
(TYPE is null for libcalls where that information may not be available.) */
(((TYPE) ? TYPE_ALIGN (TYPE) : GET_MODE_BITSIZE (MODE)) <= PARM_BOUNDARY \
? PARM_BOUNDARY \
: 2 * PARM_BOUNDARY)
-
-/* This macro offers an alternative
- to using `__builtin_saveregs' and defining the macro
- `EXPAND_BUILTIN_SAVEREGS'. Use it to store the anonymous register
- arguments into the stack so that all the arguments appear to have
- been passed consecutively on the stack. Once this is done, you
- can use the standard implementation of varargs that works for
- machines that pass all their arguments on the stack.
-
- The argument ARGS_SO_FAR is the `CUMULATIVE_ARGS' data structure,
- containing the values that obtain after processing of the named
- arguments. The arguments MODE and TYPE describe the last named
- argument--its machine mode and its data type as a tree node.
-
- The macro implementation should do two things: first, push onto the
- stack all the argument registers *not* used for the named
- arguments, and second, store the size of the data thus pushed into
- the `int'-valued variable whose name is supplied as the argument
- PRETEND_SIZE. The value that you store here will serve as
- additional offset for setting up the stack frame.
-
- If the argument NO_RTL is nonzero, it means that the
- arguments of the function are being analyzed for the second time.
- This happens for an inline function, which is not actually
- compiled until the end of the source file. The macro
- `SETUP_INCOMING_VARARGS' should not generate any instructions in
- this case. */
-
-#define SETUP_INCOMING_VARARGS(ARGS_SO_FAR, MODE, TYPE, PRETEND_SIZE, NO_RTL) \
-arc_setup_incoming_varargs(&ARGS_SO_FAR, MODE, TYPE, &PRETEND_SIZE, NO_RTL)
\f
/* Function results. */
/* ??? What about r1 in DI/DF values. */
#define FUNCTION_VALUE_REGNO_P(N) ((N) == 0)
-/* A C expression which can inhibit the returning of certain function
- values in registers, based on the type of value. A nonzero value says
- to return the function value in memory, just as large structures are
- always returned. Here TYPE will be a C expression of type `tree',
- representing the data type of the value. */
-#define RETURN_IN_MEMORY(TYPE) \
-(AGGREGATE_TYPE_P (TYPE) \
- || int_size_in_bytes (TYPE) > 8 \
- || TREE_ADDRESSABLE (TYPE))
-
-/* Tell GCC to use RETURN_IN_MEMORY. */
+/* Tell GCC to use TARGET_RETURN_IN_MEMORY. */
#define DEFAULT_PCC_STRUCT_RETURN 0
-
-/* Register in which address to store a structure value
- is passed to a function, or 0 to use `invisible' first argument. */
-#define STRUCT_VALUE 0
\f
/* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
the stack pointer does not matter. The value is tested only in
for profiling a function entry. */
#define FUNCTION_PROFILER(FILE, LABELNO)
\f
-/* Trampolines. */
-/* ??? This doesn't work yet because GCC will use as the address of a nested
- function the address of the trampoline. We need to use that address
- right shifted by 2. It looks like we'll need PSImode after all. :-( */
-
-/* Output assembler code for a block containing the constant parts
- of a trampoline, leaving space for the variable parts. */
-/* On the ARC, the trampoline is quite simple as we have 32 bit immediate
- constants.
-
- mov r24,STATIC
- j.nd FUNCTION
-*/
-#define TRAMPOLINE_TEMPLATE(FILE) \
-do { \
- assemble_aligned_integer (UNITS_PER_WORD, GEN_INT (0x631f7c00)); \
- assemble_aligned_integer (UNITS_PER_WORD, const0_rtx); \
- assemble_aligned_integer (UNITS_PER_WORD, GEN_INT (0x381f0000)); \
- assemble_aligned_integer (UNITS_PER_WORD, const0_rtx); \
-} while (0)
-
-/* Length in units of the trampoline for entering a nested function. */
+#define TRAMPOLINE_ALIGNMENT 32
#define TRAMPOLINE_SIZE 16
-
-/* Emit RTL insns to initialize the variable parts of a trampoline.
- FNADDR is an RTX for the address of the function's pure code.
- CXT is an RTX for the static chain value for the function. */
-#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
-do { \
- emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 4)), CXT); \
- emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 12)), FNADDR); \
- emit_insn (gen_flush_icache (validize_mem (gen_rtx_MEM (SImode, TRAMP)))); \
-} while (0)
-\f
-/* Library calls. */
-
-/* Generate calls to memcpy, memcmp and memset. */
-#define TARGET_MEM_FUNCTIONS
\f
/* Addressing modes, and classification of registers for them. */
|| GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST)
/* Nonzero if the constant value X is a legitimate general operand.
- We can handle any 32 or 64 bit constant. */
+ We can handle any 32- or 64-bit constant. */
/* "1" should work since the largest constant should be a 64 bit critter. */
/* ??? Not sure what to do for 64x32 compiler. */
#define LEGITIMATE_CONSTANT_P(X) 1
/* Nonzero if X is a hard reg that can be used as an index
or if it is a pseudo reg. */
#define REG_OK_FOR_INDEX_P(X) \
-((unsigned) REGNO (X) - 29 >= FIRST_PSEUDO_REGISTER - 29)
+((unsigned) REGNO (X) - 32 >= FIRST_PSEUDO_REGISTER - 32)
/* Nonzero if X is a hard reg that can be used as a base reg
or if it is a pseudo reg. */
#define REG_OK_FOR_BASE_P(X) \
-((unsigned) REGNO (X) - 29 >= FIRST_PSEUDO_REGISTER - 29)
+((unsigned) REGNO (X) - 32 >= FIRST_PSEUDO_REGISTER - 32)
#else
&& RTX_OK_FOR_BASE_P (XEXP ((X), 0))) \
goto ADDR; \
}
-
-/* Try machine-dependent ways of modifying an illegitimate address
- to be legitimate. If we find one, return the new, valid address.
- This macro is used in only one place: `memory_address' in explow.c.
-
- OLDX is the address as it was before break_out_memory_refs was called.
- In some cases it is useful to look at this to decide what needs to be done.
-
- MODE and WIN are passed so that this macro can use
- GO_IF_LEGITIMATE_ADDRESS.
-
- It is always safe for this macro to do nothing. It exists to recognize
- opportunities to optimize the output. */
-
-#define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN)
-
-/* Go to LABEL if ADDR (a legitimate address expression)
- has an effect that depends on the machine mode it is used for. */
-#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \
-{ if (GET_CODE (ADDR) == PRE_DEC) \
- goto LABEL; \
- if (GET_CODE (ADDR) == PRE_INC) \
- goto LABEL; \
-}
\f
-/* Condition code usage. */
-
-/* Some insns set all condition code flags, some only set the ZNC flags, and
- some only set the ZN flags. */
-
-#define EXTRA_CC_MODES \
- CC(CCZNCmode, "CCZNC") \
- CC(CCZNmode, "CCZN")
-
/* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
return the mode to be used for the comparison. */
#define SELECT_CC_MODE(OP, X, Y) \
arc_select_cc_mode (OP, X, Y)
-/* Return non-zero if SELECT_CC_MODE will never return MODE for a
+/* Return nonzero if SELECT_CC_MODE will never return MODE for a
floating point inequality comparison. */
#define REVERSIBLE_CC_MODE(MODE) 1 /*???*/
\f
/* Costs. */
-/* An insn is define to cost 4 "units", and we work from there.
- COSTS_N_INSNS (N) is defined as (N) * 4 - 2 so that seems reasonable.
- Some values are supposed to be defined relative to each other and thus
- aren't necessarily related to COSTS_N_INSNS. */
-
-/* Compute the cost of computing a constant rtl expression RTX
- whose rtx-code is CODE. The body of this macro is a portion
- of a switch statement. If the code is computed here,
- return it with a return statement. Otherwise, break from the switch. */
-/* Small integers are as cheap as registers. 4 byte values can be fetched
- as immediate constants - let's give that the cost of an extra insn. */
-#define CONST_COSTS(X, CODE, OUTER_CODE) \
- case CONST_INT : \
- if (SMALL_INT (INTVAL (X))) \
- return 0; \
- /* fall through */ \
- case CONST : \
- case LABEL_REF : \
- case SYMBOL_REF : \
- return 4; \
- case CONST_DOUBLE : \
- { \
- rtx high, low; \
- split_double (X, &high, &low); \
- return 4 * (!SMALL_INT (INTVAL (high)) \
- + !SMALL_INT (INTVAL (low))); \
- }
-
-/* Compute the cost of an address. */
-#define ADDRESS_COST(ADDR) (REG_P (ADDR) ? 1 : arc_address_cost (ADDR))
-
/* Compute extra cost of moving data between one register class
and another. */
#define REGISTER_MOVE_COST(MODE, CLASS1, CLASS2) 2
/* The cost of a branch insn. */
/* ??? What's the right value here? Branches are certainly more
expensive than reg->reg moves. */
-#define BRANCH_COST 2
-
-/* Provide the costs of a rtl expression. This is in the body of a
- switch on CODE. The purpose for the cost of MULT is to encourage
- `synth_mult' to find a synthetic multiply when reasonable.
-
- If we need more than 12 insns to do a multiply, then go out-of-line,
- since the call overhead will be < 10% of the cost of the multiply. */
-#define RTX_COSTS(X, CODE, OUTER_CODE) \
- case ASHIFT : \
- case ASHIFTRT : \
- case LSHIFTRT : \
- if (TARGET_SHIFTER) \
- return COSTS_N_INSNS (1); \
- if (GET_CODE (XEXP ((X), 1)) != CONST_INT) \
- return COSTS_N_INSNS (16); \
- return COSTS_N_INSNS (INTVAL (XEXP ((X), 1)));
+#define BRANCH_COST(speed_p, predictable_p) 2
/* Nonzero if access to memory by bytes is slow and undesirable.
For RISC chips, it means that access to memory by bytes is no
function address than to call an address kept in a register. */
/* On the ARC, calling through registers is slow. */
#define NO_FUNCTION_CSE
-
-/* Define this macro if it is as good or better for a function to call
- itself with an explicit address than to call an address kept in a
- register. */
-/* On the ARC, calling through registers is slow. */
-#define NO_RECURSIVE_FUNCTION_CSE
\f
/* Section selection. */
/* WARNING: These section names also appear in dwarfout.c. */
#if defined (CRT_INIT) || defined (CRT_FINI)
#define TEXT_SECTION_ASM_OP "\t.section .text"
#else
-#define TEXT_SECTION_ASM_OP arc_text_section /*"\t.section .text"*/
+#define TEXT_SECTION_ASM_OP arc_text_section
#endif
-#define DATA_SECTION_ASM_OP arc_data_section /*"\t.section .data"*/
+#define DATA_SECTION_ASM_OP arc_data_section
-#undef CONST_SECTION_ASM_OP
-#define CONST_SECTION_ASM_OP arc_rodata_section /*"\t.section .rodata"*/
+#undef READONLY_DATA_SECTION_ASM_OP
+#define READONLY_DATA_SECTION_ASM_OP arc_rodata_section
#define BSS_SECTION_ASM_OP "\t.section .bss"
This macro is irrelevant if there is no separate readonly data section. */
/*#define JUMP_TABLES_IN_TEXT_SECTION*/
-/* Define this macro if references to a symbol must be treated
- differently depending on something about the variable or
- function named by the symbol (such as what section it is in).
-
- The macro definition, if any, is executed immediately after the
- rtl for DECL or other node is created.
- The value of the rtl will be a `mem' whose address is a
- `symbol_ref'.
-
- The usual thing for this macro to do is to store a flag in the
- `symbol_ref' (such as `SYMBOL_REF_FLAG') or to store a modified
- name string in the `symbol_ref' (if one bit is not enough
- information). */
-
-/* On the ARC, function addresses are not the same as normal addresses.
- Branch to absolute address insns take an address that is right-shifted
- by 2. We encode the fact that we have a function here, and then emit a
- special assembler op when outputting the address. */
-#define ENCODE_SECTION_INFO(DECL, FIRST) \
-do { \
- if (TREE_CODE (DECL) == FUNCTION_DECL) \
- SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0)) = 1; \
-} while (0)
-
-/* Decode SYM_NAME and store the real name part in VAR, sans
- the characters that encode section info. Define this macro if
- ENCODE_SECTION_INFO alters the symbol's name string. */
-/*#define STRIP_NAME_ENCODING(VAR, SYM_NAME)*/
-
/* For DWARF. Marginally different than default so output is "prettier"
(and consistent with above). */
#define PUSHSECTION_ASM_OP "\t.section "
/* This register is call-saved on the ARC. */
/*#define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED*/
-/* By generating position-independent code, when two different programs (A
- and B) share a common library (libC.a), the text of the library can be
- shared whether or not the library is linked at the same address for both
- programs. In some of these environments, position-independent code
- requires not only the use of different addressing modes, but also
- special code to enable the use of these addressing modes.
-
- The FINALIZE_PIC macro serves as a hook to emit these special
- codes once the function is being compiled into assembly code, but not
- before. (It is not done before, because in the case of compiling an
- inline function, it would lead to multiple PIC prologues being
- included in functions which used inline functions and were compiled to
- assembly language.) */
-
-#define FINALIZE_PIC arc_finalize_pic ()
-
/* A C expression that is nonzero if X is a legitimate immediate
operand on the target machine when generating position independent code.
You can assume that X satisfies CONSTANT_P, so you need not
\f
/* Control the assembler format that we output. */
-/* Output at beginning of assembler file. */
-#undef ASM_FILE_START
-#define ASM_FILE_START(FILE) arc_asm_file_start (FILE)
-
/* A C string constant describing how to begin a comment in the target
assembler language. The compiler assumes that the comment will
end at the end of the line. */
no longer contain unusual constructs. */
#define ASM_APP_OFF ""
-/* This is how to output the definition of a user-level label named NAME,
- such as the label on a static function or variable NAME. */
-#define ASM_OUTPUT_LABEL(FILE, NAME) \
-do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
-
-/* This is how to output a command to make the user-level label named NAME
- defined for reference from other files. */
-#define ASM_GLOBALIZE_LABEL(FILE, NAME) \
-do { \
- fputs ("\t.global\t", FILE); \
- assemble_name (FILE, NAME); \
- fputs ("\n", FILE); \
-} while (0)
-
-/* A C statement (sans semicolon) to output on FILE an assembler pseudo-op to
- declare a library function name external. The name of the library function
- is given by SYMREF, which has type RTX and is a SYMBOL_REF. */
-#if 0
-/* On the ARC we want to have libgcc's for multiple cpus in one binary.
- We can't use `assemble_name' here as that will call ASM_OUTPUT_LABELREF
- and we'll get another suffix added on if -mmangle-cpu. */
-extern const char *arc_mangle_cpu;
-#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, SYMREF) \
-do { \
- if (TARGET_MANGLE_CPU_LIBGCC) \
- { \
- fprintf (FILE, "\t.rename\t_%s, _%s%s\n", \
- XSTR (SYMREF, 0), XSTR (SYMREF, 0), \
- arc_mangle_suffix); \
- } \
-} while (0)
-#endif
+/* Globalizing directive for a label. */
+#define GLOBAL_ASM_OP "\t.global\t"
/* This is how to output a reference to a user-level label named NAME.
`assemble_name' uses this. */
compiled for different cpus. */
/* We work around a dwarfout.c deficiency by watching for labels from it and
not adding the '_' prefix nor the cpu suffix. There is a comment in
- dwarfout.c that says it should be using ASM_OUTPUT_INTERNAL_LABEL. */
+ dwarfout.c that says it should be using (*targetm.asm_out.internal_label). */
extern const char *arc_mangle_cpu;
#define ASM_OUTPUT_LABELREF(FILE, NAME) \
do { \
} \
} while (0)
-/* This is how to output a definition of an internal numbered label where
- PREFIX is the class of label and NUM is the number within the class. */
-#undef ASM_OUTPUT_INTERNAL_LABEL
-#define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \
-do { \
- arc_ccfsm_at_label (PREFIX, NUM); \
- fprintf (FILE, ".%s%d:\n", PREFIX, NUM); \
-} while (0)
-
-/* Store in OUTPUT a string (made with alloca) containing
- an assembler-name for a local static variable named NAME.
- LABELNO is an integer which is different for each call. */
-#define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
-( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \
- sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
-
/* Assembler pseudo-op to equate one value with another. */
/* ??? This is needed because dwarfout.c provides a default definition too
late for defaults.h (which contains the default definition of ASM_OUTPUT_DEF
/* A C compound statement to output to stdio stream STREAM the
assembler syntax for an instruction operand that is a memory
- reference whose address is ADDR. ADDR is an RTL expression.
-
- On some machines, the syntax for a symbolic address depends on
- the section that the address refers to. On these machines,
- define the macro `ENCODE_SECTION_INFO' to store the information
- into the `symbol_ref', and then check for it here. */
+ reference whose address is ADDR. ADDR is an RTL expression. */
#define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
arc_print_operand_address (FILE, ADDR)
/* Debugging information. */
/* Generate DBX and DWARF debugging information. */
-#ifndef DBX_DEBUGGING_INFO
-#define DBX_DEBUGGING_INFO
-#endif
-#ifndef DWARF_DEBUGGING_INFO
-#define DWARF_DEBUGGING_INFO
-#endif
+#define DBX_DEBUGGING_INFO 1
/* Prefer STABS (for now). */
#undef PREFERRED_DEBUGGING_TYPE
for the index in the tablejump instruction. */
#define CASE_VECTOR_MODE Pmode
-/* Define as C expression which evaluates to nonzero if the tablejump
- instruction expects the table to contain offsets from the address of the
- table.
- Do not define this if the table should contain absolute addresses. */
-/* It's not clear what PIC will look like or whether we want to use -fpic
- for the embedded form currently being talked about. For now require -fpic
- to get pc relative switch tables. */
-/*#define CASE_VECTOR_PC_RELATIVE 1 */
-
/* Define if operations between registers always perform the operation
on the full register even if a narrower mode is specified. */
#define WORD_REGISTER_OPERATIONS
/* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD
will either zero-extend or sign-extend. The value of this macro should
be the code that says which one of the two operations is implicitly
- done, NIL if none. */
+ done, UNKNOWN if none. */
#define LOAD_EXTEND_OP(MODE) ZERO_EXTEND
/* Max number of bytes we can move from memory to memory
is done just by pretending it is already truncated. */
#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
-/* We assume that the store-condition-codes instructions store 0 for false
- and some other value for true. This is the value stored for true. */
-#define STORE_FLAG_VALUE 1
-
/* Specify the machine mode that pointers have.
After generation of rtl, the compiler makes no further distinction
between pointers and any other objects of this machine mode. */
-/* ??? The arc doesn't have full 32 bit pointers, but making this PSImode has
+/* ??? The arc doesn't have full 32-bit pointers, but making this PSImode has
its own problems (you have to add extendpsisi2 and trucnsipsi2 but how does
one do it without getting excess code?). Try to avoid it. */
#define Pmode SImode
/* ??? Not defined in tm.texi. */
#define SETJMP_VIA_SAVE_AREA
\f
-/* Define the information needed to generate branch and scc insns. This is
- stored from the compare operation. Note that we can't use "rtx" here
- since it hasn't been defined! */
-extern struct rtx_def *arc_compare_op0, *arc_compare_op1;
-
/* ARC function types. */
enum arc_function_type {
ARC_FUNCTION_UNKNOWN, ARC_FUNCTION_NORMAL,
#define ARC_INTERRUPT_P(TYPE) \
((TYPE) == ARC_FUNCTION_ILINK1 || (TYPE) == ARC_FUNCTION_ILINK2)
/* Compute the type of a function from its DECL. */
-
-\f
-/* Implement `va_start' for varargs and stdarg. */
-#define EXPAND_BUILTIN_VA_START(stdarg, valist, nextarg) \
- arc_va_start (stdarg, valist, nextarg)
-
-/* Implement `va_arg'. */
-#define EXPAND_BUILTIN_VA_ARG(valist, type) \
- arc_va_arg (valist, type)
OSDN Git Service
