/* Definitions of target machine for GNU compiler, Argonaut ARC cpu.
- Copyright (C) 1994, 1995, 1997, 1998, 1999, 2000, 2001, 2002, 2004
- 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 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 2, or (at your option)
+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,
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 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
*/
#undef ASM_SPEC
#undef LINK_SPEC
+#undef LIB_SPEC
#undef STARTFILE_SPEC
#undef ENDFILE_SPEC
#undef SIZE_TYPE
%{EB:-mbig-endian} %{EL:-mlittle-endian} \
"
-#define ASM_SPEC "%{v} %{EB} %{EL}"
+#define ASM_SPEC "%{EB} %{EL}"
#define LINK_SPEC "%{v} %{EB} %{EL}"
+#define LIB_SPEC "-lc"
+
#define STARTFILE_SPEC "%{!shared:crt0.o%s} crtinit.o%s"
#define ENDFILE_SPEC "crtfini.o%s"
/* Check if CPU is an extension and set `arc_cpu_type' and `arc_mangle_cpu'
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
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, \
27, 28, 29, 30 }
-/* Macro to conditionally modify fixed_regs/call_used_regs. */
-#define CONDITIONAL_REGISTER_USAGE \
-do { \
- if (PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM) \
- { \
- fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
- call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \
- } \
-} while (0)
-
/* Return number of consecutive hard regs needed starting at reg REGNO
to hold something of mode MODE.
This is ordinarily the length in words of a value of mode MODE
#define REGNO_OK_FOR_INDEX_P(REGNO) \
((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32)
-/* 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)
-
/* Return the maximum number of consecutive registers
needed to represent mode MODE in a register of class CLASS. */
#define CLASS_MAX_NREGS(CLASS, MODE) \
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 \
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) \
/* 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
#define FUNCTION_ARG_REGNO_P(N) \
((unsigned) (N) < MAX_ARC_PARM_REGS)
-/* The ROUND_ADVANCE* macros are local to this file. */
-/* Round SIZE up to a word boundary. */
-#define ROUND_ADVANCE(SIZE) \
-(((SIZE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
-
-/* Round arg MODE/TYPE up to the next word boundary. */
-#define ROUND_ADVANCE_ARG(MODE, TYPE) \
-((MODE) == BLKmode \
- ? ROUND_ADVANCE (int_size_in_bytes (TYPE)) \
- : ROUND_ADVANCE (GET_MODE_SIZE (MODE)))
-
-/* Round CUM up to the necessary point for argument MODE/TYPE. */
-#define ROUND_ADVANCE_CUM(CUM, MODE, TYPE) \
-((((MODE) == BLKmode ? TYPE_ALIGN (TYPE) : GET_MODE_BITSIZE (MODE)) \
- > BITS_PER_WORD) \
- ? (((CUM) + 1) & ~1) \
- : (CUM))
-
-/* Return boolean indicating arg of type TYPE and mode MODE will be passed in
- 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).
- This macro is only used in this file. */
-#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)))
-
-/* Determine where to put an argument to a function.
- Value is zero to push the argument on the stack,
- or a hard register in which to store the argument.
-
- MODE is the argument's machine mode.
- TYPE is the data type of the argument (as a tree).
- This is null for libcalls where that information may
- not be available.
- CUM is a variable of type CUMULATIVE_ARGS which gives info about
- the preceding args and about the function being called.
- NAMED is nonzero if this argument is a named parameter
- (otherwise it is an extra parameter matching an ellipsis). */
-/* 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)) \
- ? gen_rtx_REG ((MODE), ROUND_ADVANCE_CUM ((CUM), (MODE), (TYPE))) \
- : 0)
-
-/* 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.) */
-#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
-((CUM) = (ROUND_ADVANCE_CUM ((CUM), (MODE), (TYPE)) \
- + ROUND_ADVANCE_ARG ((MODE), (TYPE))))
-
-/* If defined, a C expression that gives the alignment boundary, in bits,
- of an argument with the specified mode and type. If it is not defined,
- PARM_BOUNDARY is used for all arguments. */
-#define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \
-(((TYPE) ? TYPE_ALIGN (TYPE) : GET_MODE_BITSIZE (MODE)) <= PARM_BOUNDARY \
- ? PARM_BOUNDARY \
- : 2 * PARM_BOUNDARY)
\f
/* Function results. */
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
/* 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
&& RTX_OK_FOR_BASE_P (XEXP ((X), 0))) \
goto ADDR; \
}
-
-/* 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
/* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
return the mode to be used for the comparison. */
/* 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
+#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
/* 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
/* 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(valist, nextarg) \
- arc_va_start (valist, nextarg)
projects / gcc.git / blobdiff