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freebsd-dev/contrib/gcc/config/ia64/ia64.h
David E. O'Brien 1952e2e1c1 Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. 
These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00

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/* Definitions of target machine GNU compiler. IA-64 version.
Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
Contributed by James E. Wilson <wilson@cygnus.com> and
David Mosberger <davidm@hpl.hp.com>.
This file is part of GNU CC.
GNU CC 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)
any later version.
GNU CC 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. */
/* ??? Look at ABI group documents for list of preprocessor macros and
other features required for ABI compliance. */
/* ??? Functions containing a non-local goto target save many registers. Why?
See for instance execute/920428-2.c. */
/* ??? Add support for short data/bss sections. */
/* Run-time target specifications */
#define CPP_CPU_SPEC "\
-Acpu=ia64 -Amachine=ia64 \
%{!ansi:%{!std=c*:%{!std=i*:-Dia64}}} -D__ia64 -D__ia64__"
#define CC1_SPEC "%(cc1_cpu) "
/* This declaration should be present. */
extern int target_flags;
/* This series of macros is to allow compiler command arguments to enable or
disable the use of optional features of the target machine. */
#define MASK_BIG_ENDIAN 0x00000001 /* Generate big endian code. */
#define MASK_GNU_AS 0x00000002 /* Generate code for GNU as. */
#define MASK_GNU_LD 0x00000004 /* Generate code for GNU ld. */
#define MASK_NO_PIC 0x00000008 /* Generate code without GP reg. */
#define MASK_VOL_ASM_STOP 0x00000010 /* Emit stop bits for vol ext asm. */
#define MASK_ILP32 0x00000020 /* Generate ILP32 code. */
#define MASK_B_STEP 0x00000040 /* Emit code for Itanium B step. */
#define MASK_REG_NAMES 0x00000080 /* Use in/loc/out register names. */
#define MASK_NO_SDATA 0x00000100 /* Disable sdata/scommon/sbss. */
#define MASK_CONST_GP 0x00000200 /* treat gp as program-wide constant */
#define MASK_AUTO_PIC 0x00000400 /* generate automatically PIC */
#define MASK_INLINE_DIV_LAT 0x00000800 /* inline div, min latency. */
#define MASK_INLINE_DIV_THR 0x00001000 /* inline div, max throughput. */
#define MASK_DWARF2_ASM 0x40000000 /* test dwarf2 line info via gas. */
#define TARGET_BIG_ENDIAN (target_flags & MASK_BIG_ENDIAN)
#define TARGET_GNU_AS (target_flags & MASK_GNU_AS)
#define TARGET_GNU_LD (target_flags & MASK_GNU_LD)
#define TARGET_NO_PIC (target_flags & MASK_NO_PIC)
#define TARGET_VOL_ASM_STOP (target_flags & MASK_VOL_ASM_STOP)
#define TARGET_ILP32 (target_flags & MASK_ILP32)
#define TARGET_B_STEP (target_flags & MASK_B_STEP)
#define TARGET_REG_NAMES (target_flags & MASK_REG_NAMES)
#define TARGET_NO_SDATA (target_flags & MASK_NO_SDATA)
#define TARGET_CONST_GP (target_flags & MASK_CONST_GP)
#define TARGET_AUTO_PIC (target_flags & MASK_AUTO_PIC)
#define TARGET_INLINE_DIV_LAT (target_flags & MASK_INLINE_DIV_LAT)
#define TARGET_INLINE_DIV_THR (target_flags & MASK_INLINE_DIV_THR)
#define TARGET_INLINE_DIV \
(target_flags & (MASK_INLINE_DIV_LAT | MASK_INLINE_DIV_THR))
#define TARGET_DWARF2_ASM (target_flags & MASK_DWARF2_ASM)
/* This macro defines names of command options to set and clear bits in
`target_flags'. Its definition is an initializer with a subgrouping for
each command option. */
#define TARGET_SWITCHES \
{ \
{ "big-endian", MASK_BIG_ENDIAN, \
N_("Generate big endian code") }, \
{ "little-endian", -MASK_BIG_ENDIAN, \
N_("Generate little endian code") }, \
{ "gnu-as", MASK_GNU_AS, \
N_("Generate code for GNU as") }, \
{ "no-gnu-as", -MASK_GNU_AS, \
N_("Generate code for Intel as") }, \
{ "gnu-ld", MASK_GNU_LD, \
N_("Generate code for GNU ld") }, \
{ "no-gnu-ld", -MASK_GNU_LD, \
N_("Generate code for Intel ld") }, \
{ "no-pic", MASK_NO_PIC, \
N_("Generate code without GP reg") }, \
{ "volatile-asm-stop", MASK_VOL_ASM_STOP, \
N_("Emit stop bits before and after volatile extended asms") }, \
{ "no-volatile-asm-stop", -MASK_VOL_ASM_STOP, \
N_("Don't emit stop bits before and after volatile extended asms") }, \
{ "b-step", MASK_B_STEP, \
N_("Emit code for Itanium (TM) processor B step")}, \
{ "register-names", MASK_REG_NAMES, \
N_("Use in/loc/out register names")}, \
{ "no-sdata", MASK_NO_SDATA, \
N_("Disable use of sdata/scommon/sbss")}, \
{ "sdata", -MASK_NO_SDATA, \
N_("Enable use of sdata/scommon/sbss")}, \
{ "constant-gp", MASK_CONST_GP, \
N_("gp is constant (but save/restore gp on indirect calls)") }, \
{ "auto-pic", MASK_AUTO_PIC, \
N_("Generate self-relocatable code") }, \
{ "inline-divide-min-latency", MASK_INLINE_DIV_LAT, \
N_("Generate inline division, optimize for latency") }, \
{ "inline-divide-max-throughput", MASK_INLINE_DIV_THR, \
N_("Generate inline division, optimize for throughput") }, \
{ "dwarf2-asm", MASK_DWARF2_ASM, \
N_("Enable Dwarf 2 line debug info via GNU as")}, \
{ "no-dwarf2-asm", -MASK_DWARF2_ASM, \
N_("Disable Dwarf 2 line debug info via GNU as")}, \
SUBTARGET_SWITCHES \
{ "", TARGET_DEFAULT | TARGET_CPU_DEFAULT, \
NULL } \
}
/* Default target_flags if no switches are specified */
#ifndef TARGET_DEFAULT
#define TARGET_DEFAULT MASK_DWARF2_ASM
#endif
#ifndef TARGET_CPU_DEFAULT
#define TARGET_CPU_DEFAULT 0
#endif
#ifndef SUBTARGET_SWITCHES
#define SUBTARGET_SWITCHES
#endif
/* This macro is similar to `TARGET_SWITCHES' but defines names of command
options that have values. Its definition is an initializer with a
subgrouping for each command option. */
extern const char *ia64_fixed_range_string;
#define TARGET_OPTIONS \
{ \
{ "fixed-range=", &ia64_fixed_range_string, \
N_("Specify range of registers to make fixed")}, \
}
/* 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. */
#define OVERRIDE_OPTIONS ia64_override_options ()
/* Some machines may desire to change what optimizations are performed for
various optimization levels. This macro, if defined, is executed once just
after the optimization level is determined and before the remainder of the
command options have been parsed. Values set in this macro are used as the
default values for the other command line options. */
/* #define OPTIMIZATION_OPTIONS(LEVEL,SIZE) */
/* Driver configuration */
/* A C string constant that tells the GNU CC driver program options to pass to
CPP. It can also specify how to translate options you give to GNU CC into
options for GNU CC to pass to the CPP. */
/* ??? __LONG_MAX__ depends on LP64/ILP32 switch. */
/* ??? An alternative is to modify glimits.h to check for __LP64__ instead
of checked for CPU specific defines. We could also get rid of all LONG_MAX
defines in other tm.h files. */
#define CPP_SPEC \
"%{mcpu=itanium:-D__itanium__} %{mbig-endian:-D__BIG_ENDIAN__} \
-D__LONG_MAX__=9223372036854775807L"
/* This is always "long" so it doesn't "change" in ILP32 vs. LP64. */
/* #define NO_BUILTIN_SIZE_TYPE */
/* This is always "long" so it doesn't "change" in ILP32 vs. LP64. */
/* #define NO_BUILTIN_PTRDIFF_TYPE */
/* A C string constant that tells the GNU CC driver program options to pass to
`cc1'. It can also specify how to translate options you give to GNU CC into
options for GNU CC to pass to the `cc1'. */
#undef CC1_SPEC
#define CC1_SPEC "%{G*}"
/* A C string constant that tells the GNU CC driver program options to pass to
`cc1plus'. It can also specify how to translate options you give to GNU CC
into options for GNU CC to pass to the `cc1plus'. */
/* #define CC1PLUS_SPEC "" */
/* Storage Layout */
/* Define this macro to have the value 1 if the most significant bit in a byte
has the lowest number; otherwise define it to have the value zero. */
#define BITS_BIG_ENDIAN 0
#define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0)
/* Define this macro to have the value 1 if, in a multiword object, the most
significant word has the lowest number. */
#define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0)
#if defined(__BIG_ENDIAN__)
#define LIBGCC2_WORDS_BIG_ENDIAN 1
#else
#define LIBGCC2_WORDS_BIG_ENDIAN 0
#endif
#define BITS_PER_UNIT 8
#define BITS_PER_WORD 64
#define UNITS_PER_WORD 8
#define POINTER_SIZE (TARGET_ILP32 ? 32 : 64)
/* A C expression whose value is zero if pointers that need to be extended
from being `POINTER_SIZE' bits wide to `Pmode' are sign-extended and one if
they are zero-extended and negative one if there is an ptr_extend operation.
You need not define this macro if the `POINTER_SIZE' is equal to the width
of `Pmode'. */
/* Need this for 32 bit pointers, see hpux.h for setting it. */
/* #define POINTERS_EXTEND_UNSIGNED */
/* A macro to update MODE and UNSIGNEDP when an object whose type is TYPE and
which has the specified mode and signedness is to be stored in a register.
This macro is only called when TYPE is a scalar type. */
#define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \
do \
{ \
if (GET_MODE_CLASS (MODE) == MODE_INT \
&& GET_MODE_SIZE (MODE) < 4) \
(MODE) = SImode; \
} \
while (0)
/* ??? ABI doesn't allow us to define this. */
/* #define PROMOTE_FUNCTION_ARGS */
/* ??? ABI doesn't allow us to define this. */
/* #define PROMOTE_FUNCTION_RETURN */
#define PARM_BOUNDARY 64
/* Define this macro if you wish to preserve a certain alignment for the stack
pointer. The definition is a C expression for the desired alignment
(measured in bits). */
#define STACK_BOUNDARY 128
/* Align frames on double word boundaries */
#ifndef IA64_STACK_ALIGN
#define IA64_STACK_ALIGN(LOC) (((LOC) + 15) & ~15)
#endif
#define FUNCTION_BOUNDARY 128
/* Optional x86 80-bit float, quad-precision 128-bit float, and quad-word
128 bit integers all require 128 bit alignment. */
#define BIGGEST_ALIGNMENT 128
/* If defined, a C expression to compute the alignment for a static variable.
TYPE is the data type, and ALIGN is the alignment that the object
would ordinarily have. The value of this macro is used instead of that
alignment to align the object. */
#define DATA_ALIGNMENT(TYPE, ALIGN) \
(TREE_CODE (TYPE) == ARRAY_TYPE \
&& TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
&& (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
/* If defined, a C expression to compute the alignment given to a constant that
is being placed in memory. CONSTANT is the constant and ALIGN is the
alignment that the object would ordinarily have. The value of this macro is
used instead of that alignment to align the object. */
#define CONSTANT_ALIGNMENT(EXP, ALIGN) \
(TREE_CODE (EXP) == STRING_CST \
&& (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
#define STRICT_ALIGNMENT 1
/* Define this if you wish to imitate the way many other C compilers handle
alignment of bitfields and the structures that contain them.
The behavior is that the type written for a bitfield (`int', `short', or
other integer type) imposes an alignment for the entire structure, as if the
structure really did contain an ordinary field of that type. In addition,
the bitfield is placed within the structure so that it would fit within such
a field, not crossing a boundary for it. */
#define PCC_BITFIELD_TYPE_MATTERS 1
/* An integer expression for the size in bits of the largest integer machine
mode that should actually be used. */
/* Allow pairs of registers to be used, which is the intent of the default. */
#define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (TImode)
/* A code distinguishing the floating point format of the target machine. */
#define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT
/* By default, the C++ compiler will use function addresses in the
vtable entries. Setting this non-zero tells the compiler to use
function descriptors instead. The value of this macro says how
many words wide the descriptor is (normally 2). It is assumed
that the address of a function descriptor may be treated as a
pointer to a function. */
#define TARGET_VTABLE_USES_DESCRIPTORS 2
/* Layout of Source Language Data Types */
#define INT_TYPE_SIZE 32
#define SHORT_TYPE_SIZE 16
#define LONG_TYPE_SIZE (TARGET_ILP32 ? 32 : 64)
#define MAX_LONG_TYPE_SIZE 64
#define LONG_LONG_TYPE_SIZE 64
#define CHAR_TYPE_SIZE 8
#define FLOAT_TYPE_SIZE 32
#define DOUBLE_TYPE_SIZE 64
#define LONG_DOUBLE_TYPE_SIZE 128
/* Tell real.c that this is the 80-bit Intel extended float format
packaged in a 128-bit entity. */
#define INTEL_EXTENDED_IEEE_FORMAT 1
#define DEFAULT_SIGNED_CHAR 1
/* A C expression for a string describing the name of the data type to use for
size values. The typedef name `size_t' is defined using the contents of the
string. */
/* ??? Needs to be defined for P64 code. */
/* #define SIZE_TYPE */
/* A C expression for a string describing the name of the data type to use for
the result of subtracting two pointers. The typedef name `ptrdiff_t' is
defined using the contents of the string. See `SIZE_TYPE' above for more
information. */
/* ??? Needs to be defined for P64 code. */
/* #define PTRDIFF_TYPE */
/* A C expression for a string describing the name of the data type to use for
wide characters. The typedef name `wchar_t' is defined using the contents
of the string. See `SIZE_TYPE' above for more information. */
/* #define WCHAR_TYPE */
/* A C expression for the size in bits of the data type for wide characters.
This is used in `cpp', which cannot make use of `WCHAR_TYPE'. */
/* #define WCHAR_TYPE_SIZE */
/* Register Basics */
/* Number of hardware registers known to the compiler.
We have 128 general registers, 128 floating point registers,
64 predicate registers, 8 branch registers, one frame pointer,
and several "application" registers. */
#define FIRST_PSEUDO_REGISTER 335
/* Ranges for the various kinds of registers. */
#define ADDL_REGNO_P(REGNO) ((unsigned HOST_WIDE_INT) (REGNO) <= 3)
#define GR_REGNO_P(REGNO) ((unsigned HOST_WIDE_INT) (REGNO) <= 127)
#define FR_REGNO_P(REGNO) ((REGNO) >= 128 && (REGNO) <= 255)
#define PR_REGNO_P(REGNO) ((REGNO) >= 256 && (REGNO) <= 319)
#define BR_REGNO_P(REGNO) ((REGNO) >= 320 && (REGNO) <= 327)
#define GENERAL_REGNO_P(REGNO) \
(GR_REGNO_P (REGNO) \
|| (REGNO) == FRAME_POINTER_REGNUM \
|| (REGNO) == RETURN_ADDRESS_POINTER_REGNUM)
#define GR_REG(REGNO) ((REGNO) + 0)
#define FR_REG(REGNO) ((REGNO) + 128)
#define PR_REG(REGNO) ((REGNO) + 256)
#define BR_REG(REGNO) ((REGNO) + 320)
#define OUT_REG(REGNO) ((REGNO) + 120)
#define IN_REG(REGNO) ((REGNO) + 112)
#define LOC_REG(REGNO) ((REGNO) + 32)
#define AR_CCV_REGNUM 330
#define AR_UNAT_REGNUM 331
#define AR_PFS_REGNUM 332
#define AR_LC_REGNUM 333
#define AR_EC_REGNUM 334
#define IN_REGNO_P(REGNO) ((REGNO) >= IN_REG (0) && (REGNO) <= IN_REG (7))
#define LOC_REGNO_P(REGNO) ((REGNO) >= LOC_REG (0) && (REGNO) <= LOC_REG (79))
#define OUT_REGNO_P(REGNO) ((REGNO) >= OUT_REG (0) && (REGNO) <= OUT_REG (7))
#define AR_M_REGNO_P(REGNO) ((REGNO) == AR_CCV_REGNUM \
|| (REGNO) == AR_UNAT_REGNUM)
#define AR_I_REGNO_P(REGNO) ((REGNO) >= AR_PFS_REGNUM \
&& (REGNO) < FIRST_PSEUDO_REGISTER)
#define AR_REGNO_P(REGNO) ((REGNO) >= AR_CCV_REGNUM \
&& (REGNO) < FIRST_PSEUDO_REGISTER)
/* ??? Don't really need two sets of macros. I like this one better because
it is less typing. */
#define R_GR(REGNO) GR_REG (REGNO)
#define R_FR(REGNO) FR_REG (REGNO)
#define R_PR(REGNO) PR_REG (REGNO)
#define R_BR(REGNO) BR_REG (REGNO)
/* An initializer that says which registers are used for fixed purposes all
throughout the compiled code and are therefore not available for general
allocation.
r0: constant 0
r1: global pointer (gp)
r12: stack pointer (sp)
r13: thread pointer (tp)
f0: constant 0.0
f1: constant 1.0
p0: constant true
fp: eliminable frame pointer */
/* The last 16 stacked regs are reserved for the 8 input and 8 output
registers. */
#define FIXED_REGISTERS \
{ /* General registers. */ \
1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
/* Floating-point registers. */ \
1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
/* Predicate registers. */ \
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
/* Branch registers. */ \
0, 0, 0, 0, 0, 0, 0, 0, \
/*FP RA CCV UNAT PFS LC EC */ \
1, 1, 1, 1, 1, 0, 1 \
}
/* Like `FIXED_REGISTERS' but has 1 for each register that is clobbered
(in general) by function calls as well as for fixed registers. This
macro therefore identifies the registers that are not available for
general allocation of values that must live across function calls. */
#define CALL_USED_REGISTERS \
{ /* General registers. */ \
1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, \
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, \
/* Floating-point registers. */ \
1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
/* Predicate registers. */ \
1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
/* Branch registers. */ \
1, 0, 0, 0, 0, 0, 1, 1, \
/*FP RA CCV UNAT PFS LC EC */ \
1, 1, 1, 1, 1, 0, 1 \
}
/* Like `CALL_USED_REGISTERS' but used to overcome a historical
problem which makes CALL_USED_REGISTERS *always* include
all the FIXED_REGISTERS. Until this problem has been
resolved this macro can be used to overcome this situation.
In particular, block_propagate() requires this list
be acurate, or we can remove registers which should be live.
This macro is used in regs_invalidated_by_call. */
#define CALL_REALLY_USED_REGISTERS \
{ /* General registers. */ \
1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 1, \
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, \
/* Floating-point registers. */ \
1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
/* Predicate registers. */ \
1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
/* Branch registers. */ \
1, 0, 0, 0, 0, 0, 1, 1, \
/*FP RA CCV UNAT PFS LC EC */ \
0, 0, 1, 0, 1, 0, 0 \
}
/* Define this macro if the target machine has register windows. This C
expression returns the register number as seen by the called function
corresponding to the register number OUT as seen by the calling function.
Return OUT if register number OUT is not an outbound register. */
#define INCOMING_REGNO(OUT) \
((unsigned) ((OUT) - OUT_REG (0)) < 8 ? IN_REG ((OUT) - OUT_REG (0)) : (OUT))
/* Define this macro if the target machine has register windows. This C
expression returns the register number as seen by the calling function
corresponding to the register number IN as seen by the called function.
Return IN if register number IN is not an inbound register. */
#define OUTGOING_REGNO(IN) \
((unsigned) ((IN) - IN_REG (0)) < 8 ? OUT_REG ((IN) - IN_REG (0)) : (IN))
/* Define this macro if the target machine has register windows. This
C expression returns true if the register is call-saved but is in the
register window. */
#define LOCAL_REGNO(REGNO) \
(IN_REGNO_P (REGNO) || LOC_REGNO_P (REGNO))
/* Add any extra modes needed to represent the condition code.
CCImode is used to mark a single predicate register instead
of a register pair. This is currently only used in reg_raw_mode
so that flow doesn't do something stupid. */
#define EXTRA_CC_MODES CC(CCImode, "CCI")
/* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
return the mode to be used for the comparison. Must be defined if
EXTRA_CC_MODES is defined. */
#define SELECT_CC_MODE(OP,X,Y) CCmode
/* Order of allocation of registers */
/* If defined, an initializer for a vector of integers, containing the numbers
of hard registers in the order in which GNU CC should prefer to use them
(from most preferred to least).
If this macro is not defined, registers are used lowest numbered first (all
else being equal).
One use of this macro is on machines where the highest numbered registers
must always be saved and the save-multiple-registers instruction supports
only sequences of consecutive registers. On such machines, define
`REG_ALLOC_ORDER' to be an initializer that lists the highest numbered
allocatable register first. */
/* ??? Should the GR return value registers come before or after the rest
of the caller-save GRs? */
#define REG_ALLOC_ORDER \
{ \
/* Caller-saved general registers. */ \
R_GR (14), R_GR (15), R_GR (16), R_GR (17), \
R_GR (18), R_GR (19), R_GR (20), R_GR (21), R_GR (22), R_GR (23), \
R_GR (24), R_GR (25), R_GR (26), R_GR (27), R_GR (28), R_GR (29), \
R_GR (30), R_GR (31), \
/* Output registers. */ \
R_GR (120), R_GR (121), R_GR (122), R_GR (123), R_GR (124), R_GR (125), \
R_GR (126), R_GR (127), \
/* Caller-saved general registers, also used for return values. */ \
R_GR (8), R_GR (9), R_GR (10), R_GR (11), \
/* addl caller-saved general registers. */ \
R_GR (2), R_GR (3), \
/* Caller-saved FP registers. */ \
R_FR (6), R_FR (7), \
/* Caller-saved FP registers, used for parameters and return values. */ \
R_FR (8), R_FR (9), R_FR (10), R_FR (11), \
R_FR (12), R_FR (13), R_FR (14), R_FR (15), \
/* Rotating caller-saved FP registers. */ \
R_FR (32), R_FR (33), R_FR (34), R_FR (35), \
R_FR (36), R_FR (37), R_FR (38), R_FR (39), R_FR (40), R_FR (41), \
R_FR (42), R_FR (43), R_FR (44), R_FR (45), R_FR (46), R_FR (47), \
R_FR (48), R_FR (49), R_FR (50), R_FR (51), R_FR (52), R_FR (53), \
R_FR (54), R_FR (55), R_FR (56), R_FR (57), R_FR (58), R_FR (59), \
R_FR (60), R_FR (61), R_FR (62), R_FR (63), R_FR (64), R_FR (65), \
R_FR (66), R_FR (67), R_FR (68), R_FR (69), R_FR (70), R_FR (71), \
R_FR (72), R_FR (73), R_FR (74), R_FR (75), R_FR (76), R_FR (77), \
R_FR (78), R_FR (79), R_FR (80), R_FR (81), R_FR (82), R_FR (83), \
R_FR (84), R_FR (85), R_FR (86), R_FR (87), R_FR (88), R_FR (89), \
R_FR (90), R_FR (91), R_FR (92), R_FR (93), R_FR (94), R_FR (95), \
R_FR (96), R_FR (97), R_FR (98), R_FR (99), R_FR (100), R_FR (101), \
R_FR (102), R_FR (103), R_FR (104), R_FR (105), R_FR (106), R_FR (107), \
R_FR (108), R_FR (109), R_FR (110), R_FR (111), R_FR (112), R_FR (113), \
R_FR (114), R_FR (115), R_FR (116), R_FR (117), R_FR (118), R_FR (119), \
R_FR (120), R_FR (121), R_FR (122), R_FR (123), R_FR (124), R_FR (125), \
R_FR (126), R_FR (127), \
/* Caller-saved predicate registers. */ \
R_PR (6), R_PR (7), R_PR (8), R_PR (9), R_PR (10), R_PR (11), \
R_PR (12), R_PR (13), R_PR (14), R_PR (15), \
/* Rotating caller-saved predicate registers. */ \
R_PR (16), R_PR (17), \
R_PR (18), R_PR (19), R_PR (20), R_PR (21), R_PR (22), R_PR (23), \
R_PR (24), R_PR (25), R_PR (26), R_PR (27), R_PR (28), R_PR (29), \
R_PR (30), R_PR (31), R_PR (32), R_PR (33), R_PR (34), R_PR (35), \
R_PR (36), R_PR (37), R_PR (38), R_PR (39), R_PR (40), R_PR (41), \
R_PR (42), R_PR (43), R_PR (44), R_PR (45), R_PR (46), R_PR (47), \
R_PR (48), R_PR (49), R_PR (50), R_PR (51), R_PR (52), R_PR (53), \
R_PR (54), R_PR (55), R_PR (56), R_PR (57), R_PR (58), R_PR (59), \
R_PR (60), R_PR (61), R_PR (62), R_PR (63), \
/* Caller-saved branch registers. */ \
R_BR (6), R_BR (7), \
\
/* Stacked callee-saved general registers. */ \
R_GR (32), R_GR (33), R_GR (34), R_GR (35), \
R_GR (36), R_GR (37), R_GR (38), R_GR (39), R_GR (40), R_GR (41), \
R_GR (42), R_GR (43), R_GR (44), R_GR (45), R_GR (46), R_GR (47), \
R_GR (48), R_GR (49), R_GR (50), R_GR (51), R_GR (52), R_GR (53), \
R_GR (54), R_GR (55), R_GR (56), R_GR (57), R_GR (58), R_GR (59), \
R_GR (60), R_GR (61), R_GR (62), R_GR (63), R_GR (64), R_GR (65), \
R_GR (66), R_GR (67), R_GR (68), R_GR (69), R_GR (70), R_GR (71), \
R_GR (72), R_GR (73), R_GR (74), R_GR (75), R_GR (76), R_GR (77), \
R_GR (78), R_GR (79), R_GR (80), R_GR (81), R_GR (82), R_GR (83), \
R_GR (84), R_GR (85), R_GR (86), R_GR (87), R_GR (88), R_GR (89), \
R_GR (90), R_GR (91), R_GR (92), R_GR (93), R_GR (94), R_GR (95), \
R_GR (96), R_GR (97), R_GR (98), R_GR (99), R_GR (100), R_GR (101), \
R_GR (102), R_GR (103), R_GR (104), R_GR (105), R_GR (106), R_GR (107), \
R_GR (108), \
/* Input registers. */ \
R_GR (112), R_GR (113), R_GR (114), R_GR (115), R_GR (116), R_GR (117), \
R_GR (118), R_GR (119), \
/* Callee-saved general registers. */ \
R_GR (4), R_GR (5), R_GR (6), R_GR (7), \
/* Callee-saved FP registers. */ \
R_FR (2), R_FR (3), R_FR (4), R_FR (5), R_FR (16), R_FR (17), \
R_FR (18), R_FR (19), R_FR (20), R_FR (21), R_FR (22), R_FR (23), \
R_FR (24), R_FR (25), R_FR (26), R_FR (27), R_FR (28), R_FR (29), \
R_FR (30), R_FR (31), \
/* Callee-saved predicate registers. */ \
R_PR (1), R_PR (2), R_PR (3), R_PR (4), R_PR (5), \
/* Callee-saved branch registers. */ \
R_BR (1), R_BR (2), R_BR (3), R_BR (4), R_BR (5), \
\
/* ??? Stacked registers reserved for fp, rp, and ar.pfs. */ \
R_GR (109), R_GR (110), R_GR (111), \
\
/* Special general registers. */ \
R_GR (0), R_GR (1), R_GR (12), R_GR (13), \
/* Special FP registers. */ \
R_FR (0), R_FR (1), \
/* Special predicate registers. */ \
R_PR (0), \
/* Special branch registers. */ \
R_BR (0), \
/* Other fixed registers. */ \
FRAME_POINTER_REGNUM, RETURN_ADDRESS_POINTER_REGNUM, \
AR_CCV_REGNUM, AR_UNAT_REGNUM, AR_PFS_REGNUM, AR_LC_REGNUM, \
AR_EC_REGNUM \
}
/* How Values Fit in Registers */
/* A C expression for the number of consecutive hard registers, starting at
register number REGNO, required to hold a value of mode MODE. */
/* ??? We say that BImode PR values require two registers. This allows us to
easily store the normal and inverted values. We use CCImode to indicate
a single predicate register. */
#define HARD_REGNO_NREGS(REGNO, MODE) \
((REGNO) == PR_REG (0) && (MODE) == DImode ? 64 \
: PR_REGNO_P (REGNO) && (MODE) == BImode ? 2 \
: PR_REGNO_P (REGNO) && (MODE) == CCImode ? 1 \
: FR_REGNO_P (REGNO) && (MODE) == TFmode && INTEL_EXTENDED_IEEE_FORMAT ? 1 \
: (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
/* A C expression that is nonzero if it is permissible to store a value of mode
MODE in hard register number REGNO (or in several registers starting with
that one). */
#define HARD_REGNO_MODE_OK(REGNO, MODE) \
(FR_REGNO_P (REGNO) ? \
GET_MODE_CLASS (MODE) != MODE_CC && \
(MODE) != TImode && \
(MODE) != BImode && \
((MODE) != TFmode || INTEL_EXTENDED_IEEE_FORMAT) \
: PR_REGNO_P (REGNO) ? \
(MODE) == BImode || GET_MODE_CLASS (MODE) == MODE_CC \
: GR_REGNO_P (REGNO) ? (MODE) != CCImode && (MODE) != TFmode \
: AR_REGNO_P (REGNO) ? (MODE) == DImode \
: BR_REGNO_P (REGNO) ? (MODE) == DImode \
: 0)
/* A C expression that is nonzero if it is desirable to choose register
allocation so as to avoid move instructions between a value of mode MODE1
and a value of mode MODE2.
If `HARD_REGNO_MODE_OK (R, MODE1)' and `HARD_REGNO_MODE_OK (R, MODE2)' are
ever different for any R, then `MODES_TIEABLE_P (MODE1, MODE2)' must be
zero. */
/* Don't tie integer and FP modes, as that causes us to get integer registers
allocated for FP instructions. TFmode only supported in FP registers so
we can't tie it with any other modes. */
#define MODES_TIEABLE_P(MODE1, MODE2) \
(GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2) \
&& (((MODE1) == TFmode) == ((MODE2) == TFmode)) \
&& (((MODE1) == BImode) == ((MODE2) == BImode)))
/* Handling Leaf Functions */
/* A C initializer for a vector, indexed by hard register number, which
contains 1 for a register that is allowable in a candidate for leaf function
treatment. */
/* ??? This might be useful. */
/* #define LEAF_REGISTERS */
/* A C expression whose value is the register number to which REGNO should be
renumbered, when a function is treated as a leaf function. */
/* ??? This might be useful. */
/* #define LEAF_REG_REMAP(REGNO) */
/* Register Classes */
/* An enumeral type that must be defined with all the register class names as
enumeral values. `NO_REGS' must be first. `ALL_REGS' must be the last
register class, followed by one more enumeral value, `LIM_REG_CLASSES',
which is not a register class but rather tells how many classes there
are. */
/* ??? When compiling without optimization, it is possible for the only use of
a pseudo to be a parameter load from the stack with a REG_EQUIV note.
Regclass handles this case specially and does not assign any costs to the
pseudo. The pseudo then ends up using the last class before ALL_REGS.
Thus we must not let either PR_REGS or BR_REGS be the last class. The
testcase for this is gcc.c-torture/execute/va-arg-7.c. */
enum reg_class
{
NO_REGS,
PR_REGS,
BR_REGS,
AR_M_REGS,
AR_I_REGS,
ADDL_REGS,
GR_REGS,
FR_REGS,
GR_AND_BR_REGS,
GR_AND_FR_REGS,
ALL_REGS,
LIM_REG_CLASSES
};
#define GENERAL_REGS GR_REGS
/* The number of distinct register classes. */
#define N_REG_CLASSES ((int) LIM_REG_CLASSES)
/* An initializer containing the names of the register classes as C string
constants. These names are used in writing some of the debugging dumps. */
#define REG_CLASS_NAMES \
{ "NO_REGS", "PR_REGS", "BR_REGS", "AR_M_REGS", "AR_I_REGS", \
"ADDL_REGS", "GR_REGS", "FR_REGS", \
"GR_AND_BR_REGS", "GR_AND_FR_REGS", "ALL_REGS" }
/* An initializer containing the contents of the register classes, as integers
which are bit masks. The Nth integer specifies the contents of class N.
The way the integer MASK is interpreted is that register R is in the class
if `MASK & (1 << R)' is 1. */
#define REG_CLASS_CONTENTS \
{ \
/* NO_REGS. */ \
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, \
0x00000000, 0x00000000, 0x00000000, 0x00000000, \
0x00000000, 0x00000000, 0x0000 }, \
/* PR_REGS. */ \
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, \
0x00000000, 0x00000000, 0x00000000, 0x00000000, \
0xFFFFFFFF, 0xFFFFFFFF, 0x0000 }, \
/* BR_REGS. */ \
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, \
0x00000000, 0x00000000, 0x00000000, 0x00000000, \
0x00000000, 0x00000000, 0x00FF }, \
/* AR_M_REGS. */ \
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, \
0x00000000, 0x00000000, 0x00000000, 0x00000000, \
0x00000000, 0x00000000, 0x0C00 }, \
/* AR_I_REGS. */ \
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, \
0x00000000, 0x00000000, 0x00000000, 0x00000000, \
0x00000000, 0x00000000, 0x7000 }, \
/* ADDL_REGS. */ \
{ 0x0000000F, 0x00000000, 0x00000000, 0x00000000, \
0x00000000, 0x00000000, 0x00000000, 0x00000000, \
0x00000000, 0x00000000, 0x0000 }, \
/* GR_REGS. */ \
{ 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, \
0x00000000, 0x00000000, 0x00000000, 0x00000000, \
0x00000000, 0x00000000, 0x0300 }, \
/* FR_REGS. */ \
{ 0x00000000, 0x00000000, 0x00000000, 0x00000000, \
0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, \
0x00000000, 0x00000000, 0x0000 }, \
/* GR_AND_BR_REGS. */ \
{ 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, \
0x00000000, 0x00000000, 0x00000000, 0x00000000, \
0x00000000, 0x00000000, 0x03FF }, \
/* GR_AND_FR_REGS. */ \
{ 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, \
0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, \
0x00000000, 0x00000000, 0x0300 }, \
/* ALL_REGS. */ \
{ 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, \
0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, \
0xFFFFFFFF, 0xFFFFFFFF, 0x7FFF }, \
}
/* A C expression whose value is a register class containing hard register
REGNO. In general there is more than one such class; choose a class which
is "minimal", meaning that no smaller class also contains the register. */
/* The NO_REGS case is primarily for the benefit of rws_access_reg, which
may call here with private (invalid) register numbers, such as
REG_VOLATILE. */
#define REGNO_REG_CLASS(REGNO) \
(ADDL_REGNO_P (REGNO) ? ADDL_REGS \
: GENERAL_REGNO_P (REGNO) ? GR_REGS \
: FR_REGNO_P (REGNO) ? FR_REGS \
: PR_REGNO_P (REGNO) ? PR_REGS \
: BR_REGNO_P (REGNO) ? BR_REGS \
: AR_M_REGNO_P (REGNO) ? AR_M_REGS \
: AR_I_REGNO_P (REGNO) ? AR_I_REGS \
: NO_REGS)
/* A macro whose definition is the name of the class to which a valid base
register must belong. A base register is one used in an address which is
the register value plus a displacement. */
#define BASE_REG_CLASS GENERAL_REGS
/* A macro whose definition is the name of the class to which a valid index
register must belong. An index register is one used in an address where its
value is either multiplied by a scale factor or added to another register
(as well as added to a displacement). This is needed for POST_MODIFY. */
#define INDEX_REG_CLASS GENERAL_REGS
/* A C expression which defines the machine-dependent operand constraint
letters for register classes. If CHAR is such a letter, the value should be
the register class corresponding to it. Otherwise, the value should be
`NO_REGS'. The register letter `r', corresponding to class `GENERAL_REGS',
will not be passed to this macro; you do not need to handle it. */
#define REG_CLASS_FROM_LETTER(CHAR) \
((CHAR) == 'f' ? FR_REGS \
: (CHAR) == 'a' ? ADDL_REGS \
: (CHAR) == 'b' ? BR_REGS \
: (CHAR) == 'c' ? PR_REGS \
: (CHAR) == 'd' ? AR_M_REGS \
: (CHAR) == 'e' ? AR_I_REGS \
: NO_REGS)
/* A C expression which is nonzero if register number NUM is suitable for use
as a base register in operand addresses. It may be either a suitable hard
register or a pseudo register that has been allocated such a hard reg. */
#define REGNO_OK_FOR_BASE_P(REGNO) \
(GENERAL_REGNO_P (REGNO) || GENERAL_REGNO_P (reg_renumber[REGNO]))
/* A C expression which is nonzero if register number NUM is suitable for use
as an index register in operand addresses. It may be either a suitable hard
register or a pseudo register that has been allocated such a hard reg.
This is needed for POST_MODIFY. */
#define REGNO_OK_FOR_INDEX_P(NUM) REGNO_OK_FOR_BASE_P (NUM)
/* A C expression that places additional restrictions on the register class to
use when it is necessary to copy value X into a register in class CLASS.
The value is a register class; perhaps CLASS, or perhaps another, smaller
class. */
/* Don't allow volatile mem reloads into floating point registers. This
is defined to force reload to choose the r/m case instead of the f/f case
when reloading (set (reg fX) (mem/v)).
Do not reload expressions into AR regs. */
#define PREFERRED_RELOAD_CLASS(X, CLASS) \
(CLASS == FR_REGS && GET_CODE (X) == MEM && MEM_VOLATILE_P (X) ? NO_REGS \
: CLASS == FR_REGS && GET_CODE (X) == CONST_DOUBLE ? NO_REGS \
: GET_RTX_CLASS (GET_CODE (X)) != 'o' \
&& (CLASS == AR_M_REGS || CLASS == AR_I_REGS) ? NO_REGS \
: CLASS)
/* You should define this macro to indicate to the reload phase that it may
need to allocate at least one register for a reload in addition to the
register to contain the data. Specifically, if copying X to a register
CLASS in MODE requires an intermediate register, you should define this
to return the largest register class all of whose registers can be used
as intermediate registers or scratch registers. */
#define SECONDARY_RELOAD_CLASS(CLASS, MODE, X) \
ia64_secondary_reload_class (CLASS, MODE, X)
/* Certain machines have the property that some registers cannot be copied to
some other registers without using memory. Define this macro on those
machines to be a C expression that is non-zero if objects of mode M in
registers of CLASS1 can only be copied to registers of class CLASS2 by
storing a register of CLASS1 into memory and loading that memory location
into a register of CLASS2. */
#if 0
/* ??? May need this, but since we've disallowed TFmode in GR_REGS,
I'm not quite sure how it could be invoked. The normal problems
with unions should be solved with the addressof fiddling done by
movtf and friends. */
#define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, MODE) \
((MODE) == TFmode && (((CLASS1) == GR_REGS && (CLASS2) == FR_REGS) \
|| ((CLASS1) == FR_REGS && (CLASS2) == GR_REGS)))
#endif
/* A C expression for the maximum number of consecutive registers of
class CLASS needed to hold a value of mode MODE.
This is closely related to the macro `HARD_REGNO_NREGS'. */
#define CLASS_MAX_NREGS(CLASS, MODE) \
((MODE) == BImode && (CLASS) == PR_REGS ? 2 \
: ((CLASS) == FR_REGS && (MODE) == TFmode) ? 1 \
: (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
/* If defined, gives a class of registers that cannot be used as the
operand of a SUBREG that changes the mode of the object illegally. */
#define CLASS_CANNOT_CHANGE_MODE FR_REGS
/* Defines illegal mode changes for CLASS_CANNOT_CHANGE_MODE.
In FP regs, we can't change FP values to integer values and vice
versa, but we can change e.g. DImode to SImode. */
#define CLASS_CANNOT_CHANGE_MODE_P(FROM,TO) \
(GET_MODE_CLASS (FROM) != GET_MODE_CLASS (TO))
/* A C expression that defines the machine-dependent operand constraint
letters (`I', `J', `K', .. 'P') that specify particular ranges of
integer values. */
/* 14 bit signed immediate for arithmetic instructions. */
#define CONST_OK_FOR_I(VALUE) \
((unsigned HOST_WIDE_INT)(VALUE) + 0x2000 < 0x4000)
/* 22 bit signed immediate for arith instructions with r0/r1/r2/r3 source. */
#define CONST_OK_FOR_J(VALUE) \
((unsigned HOST_WIDE_INT)(VALUE) + 0x200000 < 0x400000)
/* 8 bit signed immediate for logical instructions. */
#define CONST_OK_FOR_K(VALUE) ((unsigned HOST_WIDE_INT)(VALUE) + 0x80 < 0x100)
/* 8 bit adjusted signed immediate for compare pseudo-ops. */
#define CONST_OK_FOR_L(VALUE) ((unsigned HOST_WIDE_INT)(VALUE) + 0x7F < 0x100)
/* 6 bit unsigned immediate for shift counts. */
#define CONST_OK_FOR_M(VALUE) ((unsigned HOST_WIDE_INT)(VALUE) < 0x40)
/* 9 bit signed immediate for load/store post-increments. */
#define CONST_OK_FOR_N(VALUE) ((unsigned HOST_WIDE_INT)(VALUE) + 0x100 < 0x200)
/* 0 for r0. Used by Linux kernel, do not change. */
#define CONST_OK_FOR_O(VALUE) ((VALUE) == 0)
/* 0 or -1 for dep instruction. */
#define CONST_OK_FOR_P(VALUE) ((VALUE) == 0 || (VALUE) == -1)
#define CONST_OK_FOR_LETTER_P(VALUE, C) \
((C) == 'I' ? CONST_OK_FOR_I (VALUE) \
: (C) == 'J' ? CONST_OK_FOR_J (VALUE) \
: (C) == 'K' ? CONST_OK_FOR_K (VALUE) \
: (C) == 'L' ? CONST_OK_FOR_L (VALUE) \
: (C) == 'M' ? CONST_OK_FOR_M (VALUE) \
: (C) == 'N' ? CONST_OK_FOR_N (VALUE) \
: (C) == 'O' ? CONST_OK_FOR_O (VALUE) \
: (C) == 'P' ? CONST_OK_FOR_P (VALUE) \
: 0)
/* A C expression that defines the machine-dependent operand constraint letters
(`G', `H') that specify particular ranges of `const_double' values. */
/* 0.0 and 1.0 for fr0 and fr1. */
#define CONST_DOUBLE_OK_FOR_G(VALUE) \
((VALUE) == CONST0_RTX (GET_MODE (VALUE)) \
|| (VALUE) == CONST1_RTX (GET_MODE (VALUE)))
#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
((C) == 'G' ? CONST_DOUBLE_OK_FOR_G (VALUE) : 0)
/* A C expression that defines the optional machine-dependent constraint
letters (`Q', `R', `S', `T', `U') that can be used to segregate specific
types of operands, usually memory references, for the target machine. */
/* Non-volatile memory for FP_REG loads/stores. */
#define CONSTRAINT_OK_FOR_Q(VALUE) \
(memory_operand((VALUE), VOIDmode) && ! MEM_VOLATILE_P (VALUE))
/* 1..4 for shladd arguments. */
#define CONSTRAINT_OK_FOR_R(VALUE) \
(GET_CODE (VALUE) == CONST_INT && INTVAL (VALUE) >= 1 && INTVAL (VALUE) <= 4)
/* Non-post-inc memory for asms and other unsavory creatures. */
#define CONSTRAINT_OK_FOR_S(VALUE) \
(GET_CODE (VALUE) == MEM \
&& GET_RTX_CLASS (GET_CODE (XEXP ((VALUE), 0))) != 'a' \
&& (reload_in_progress || memory_operand ((VALUE), VOIDmode)))
#define EXTRA_CONSTRAINT(VALUE, C) \
((C) == 'Q' ? CONSTRAINT_OK_FOR_Q (VALUE) \
: (C) == 'R' ? CONSTRAINT_OK_FOR_R (VALUE) \
: (C) == 'S' ? CONSTRAINT_OK_FOR_S (VALUE) \
: 0)
/* Basic Stack Layout */
/* Define this macro if pushing a word onto the stack moves the stack pointer
to a smaller address. */
#define STACK_GROWS_DOWNWARD 1
/* Define this macro if the addresses of local variable slots are at negative
offsets from the frame pointer. */
/* #define FRAME_GROWS_DOWNWARD */
/* Offset from the frame pointer to the first local variable slot to
be allocated. */
#define STARTING_FRAME_OFFSET 0
/* Offset from the stack pointer register to the first location at which
outgoing arguments are placed. If not specified, the default value of zero
is used. This is the proper value for most machines. */
/* IA64 has a 16 byte scratch area that is at the bottom of the stack. */
#define STACK_POINTER_OFFSET 16
/* Offset from the argument pointer register to the first argument's address.
On some machines it may depend on the data type of the function. */
#define FIRST_PARM_OFFSET(FUNDECL) 0
/* A C expression whose value is RTL representing the value of the return
address for the frame COUNT steps up from the current frame, after the
prologue. */
/* ??? Frames other than zero would likely require interpreting the frame
unwind info, so we don't try to support them. We would also need to define
DYNAMIC_CHAIN_ADDRESS and SETUP_FRAME_ADDRESS (for the reg stack flush). */
#define RETURN_ADDR_RTX(COUNT, FRAME) \
((COUNT) == 0 ? return_address_pointer_rtx : const0_rtx)
/* A C expression whose value is RTL representing the location of the incoming
return address at the beginning of any function, before the prologue. This
RTL is either a `REG', indicating that the return value is saved in `REG',
or a `MEM' representing a location in the stack. This enables DWARF2
unwind info for C++ EH. */
#define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (VOIDmode, BR_REG (0))
/* ??? This is not defined because of three problems.
1) dwarf2out.c assumes that DWARF_FRAME_RETURN_COLUMN fits in one byte.
The default value is FIRST_PSEUDO_REGISTER which doesn't. This can be
worked around by setting PC_REGNUM to FR_REG (0) which is an otherwise
unused register number.
2) dwarf2out_frame_debug core dumps while processing prologue insns. We
need to refine which insns have RTX_FRAME_RELATED_P set and which don't.
3) It isn't possible to turn off EH frame info by defining DWARF2_UNIND_INFO
to zero, despite what the documentation implies, because it is tested in
a few places with #ifdef instead of #if. */
#undef INCOMING_RETURN_ADDR_RTX
/* A C expression whose value is an integer giving the offset, in bytes, from
the value of the stack pointer register to the top of the stack frame at the
beginning of any function, before the prologue. The top of the frame is
defined to be the value of the stack pointer in the previous frame, just
before the call instruction. */
#define INCOMING_FRAME_SP_OFFSET 0
/* Register That Address the Stack Frame. */
/* The register number of the stack pointer register, which must also be a
fixed register according to `FIXED_REGISTERS'. On most machines, the
hardware determines which register this is. */
#define STACK_POINTER_REGNUM 12
/* The register number of the frame pointer register, which is used to access
automatic variables in the stack frame. On some machines, the hardware
determines which register this is. On other machines, you can choose any
register you wish for this purpose. */
#define FRAME_POINTER_REGNUM 328
/* Base register for access to local variables of the function. */
#define HARD_FRAME_POINTER_REGNUM LOC_REG (79)
/* The register number of the arg pointer register, which is used to access the
function's argument list. */
/* r0 won't otherwise be used, so put the always eliminated argument pointer
in it. */
#define ARG_POINTER_REGNUM R_GR(0)
/* The register number for the return address register. For IA-64, this
is not actually a pointer as the name suggests, but that's a name that
gen_rtx_REG already takes care to keep unique. We modify
return_address_pointer_rtx in ia64_expand_prologue to reference the
final output regnum. */
#define RETURN_ADDRESS_POINTER_REGNUM 329
/* Register numbers used for passing a function's static chain pointer. */
/* ??? The ABI sez the static chain should be passed as a normal parameter. */
#define STATIC_CHAIN_REGNUM 15
/* Eliminating the Frame Pointer and the Arg Pointer */
/* 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 0
/* Show we can debug even without a frame pointer. */
#define CAN_DEBUG_WITHOUT_FP
/* If defined, this macro specifies a table of register pairs used to eliminate
unneeded registers that point into the stack frame. */
#define ELIMINABLE_REGS \
{ \
{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
{ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \
{FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
{FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \
{RETURN_ADDRESS_POINTER_REGNUM, BR_REG (0)}, \
}
/* A C expression that returns non-zero if the compiler is allowed to try to
replace register number FROM with register number TO. The frame pointer
is automatically handled. */
#define CAN_ELIMINATE(FROM, TO) \
(TO == BR_REG (0) ? current_function_is_leaf : 1)
/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It
specifies the initial difference between the specified pair of
registers. This macro must be defined if `ELIMINABLE_REGS' is
defined. */
#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
((OFFSET) = ia64_initial_elimination_offset ((FROM), (TO)))
/* Passing Function Arguments on the Stack */
/* Define this macro if an argument declared in a prototype as an integral type
smaller than `int' should actually be passed as an `int'. In addition to
avoiding errors in certain cases of mismatch, it also makes for better code
on certain machines. */
/* ??? Investigate. */
/* #define PROMOTE_PROTOTYPES */
/* If defined, the maximum amount of space required for outgoing arguments will
be computed and placed into the variable
`current_function_outgoing_args_size'. */
#define ACCUMULATE_OUTGOING_ARGS 1
/* A C expression that should indicate the number of bytes of its own arguments
that a function pops on returning, or 0 if the function pops no arguments
and the caller must therefore pop them all after the function returns. */
#define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
/* Function Arguments in Registers */
#define MAX_ARGUMENT_SLOTS 8
#define MAX_INT_RETURN_SLOTS 4
#define GR_ARG_FIRST IN_REG (0)
#define GR_RET_FIRST GR_REG (8)
#define GR_RET_LAST GR_REG (11)
#define FR_ARG_FIRST FR_REG (8)
#define FR_RET_FIRST FR_REG (8)
#define FR_RET_LAST FR_REG (15)
#define AR_ARG_FIRST OUT_REG (0)
/* A C expression that controls whether a function argument is passed in a
register, and which register. */
#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
ia64_function_arg (&CUM, MODE, TYPE, NAMED, 0)
/* Define this macro if the target machine has "register windows", so that the
register in which a function sees an arguments is not necessarily the same
as the one in which the caller passed the argument. */
#define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) \
ia64_function_arg (&CUM, MODE, TYPE, NAMED, 1)
/* 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. */
#define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
ia64_function_arg_partial_nregs (&CUM, MODE, TYPE, NAMED)
/* 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. */
#define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) 0
/* A C type for declaring a variable that is used as the first argument of
`FUNCTION_ARG' and other related values. For some target machines, the type
`int' suffices and can hold the number of bytes of argument so far. */
typedef struct ia64_args
{
int words; /* # words of arguments so far */
int fp_regs; /* # FR registers used so far */
int prototype; /* whether function prototyped */
} CUMULATIVE_ARGS;
/* A C statement (sans semicolon) for initializing the variable CUM for the
state at the beginning of the argument list. */
#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT) \
do { \
(CUM).words = 0; \
(CUM).fp_regs = 0; \
(CUM).prototype = ((FNTYPE) && TYPE_ARG_TYPES (FNTYPE)) || (LIBNAME); \
} while (0)
/* Like `INIT_CUMULATIVE_ARGS' but overrides it for the purposes of finding the
arguments for the function being compiled. If this macro is undefined,
`INIT_CUMULATIVE_ARGS' is used instead. */
/* We set prototype to true so that we never try to return a PARALLEL from
function_arg. */
#define INIT_CUMULATIVE_INCOMING_ARGS(CUM, FNTYPE, LIBNAME) \
do { \
(CUM).words = 0; \
(CUM).fp_regs = 0; \
(CUM).prototype = 1; \
} while (0)
/* A C statement (sans semicolon) to update the summarizer variable CUM to
advance past an argument in the argument list. The values MODE, TYPE and
NAMED describe that argument. Once this is done, the variable CUM is
suitable for analyzing the *following* argument with `FUNCTION_ARG'. */
#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
ia64_function_arg_advance (&CUM, MODE, TYPE, NAMED)
/* If defined, a C expression that gives the alignment boundary, in bits, of an
argument with the specified mode and type. */
/* Arguments with alignment larger than 8 bytes start at the next even
boundary. See ia64_function_arg. */
#define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \
(((TYPE) ? (TYPE_ALIGN (TYPE) > 8 * BITS_PER_UNIT) \
: (((((MODE) == BLKmode \
? int_size_in_bytes (TYPE) : GET_MODE_SIZE (MODE)) \
+ UNITS_PER_WORD - 1) / UNITS_PER_WORD) > 1)) \
? 128 : PARM_BOUNDARY)
/* A C expression that is nonzero if REGNO is the number of a hard register in
which function arguments are sometimes passed. This does *not* include
implicit arguments such as the static chain and the structure-value address.
On many machines, no registers can be used for this purpose since all
function arguments are pushed on the stack. */
#define FUNCTION_ARG_REGNO_P(REGNO) \
(((REGNO) >= GR_ARG_FIRST && (REGNO) < (GR_ARG_FIRST + MAX_ARGUMENT_SLOTS)) \
|| ((REGNO) >= FR_ARG_FIRST && (REGNO) < (FR_ARG_FIRST + MAX_ARGUMENT_SLOTS)))
/* Implement `va_start' for varargs and stdarg. */
#define EXPAND_BUILTIN_VA_START(stdarg, valist, nextarg) \
ia64_va_start (stdarg, valist, nextarg)
/* Implement `va_arg'. */
#define EXPAND_BUILTIN_VA_ARG(valist, type) \
ia64_va_arg (valist, type)
/* How Scalar Function Values are Returned */
/* A C expression to create an RTX representing the place where a function
returns a value of data type VALTYPE. */
#define FUNCTION_VALUE(VALTYPE, FUNC) \
ia64_function_value (VALTYPE, FUNC)
/* A C expression to create an RTX representing the place where a library
function returns a value of mode MODE. */
#define LIBCALL_VALUE(MODE) \
gen_rtx_REG (MODE, \
(((GET_MODE_CLASS (MODE) == MODE_FLOAT \
|| GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) && \
((MODE) != TFmode || INTEL_EXTENDED_IEEE_FORMAT)) \
? FR_RET_FIRST : GR_RET_FIRST))
/* A C expression that is nonzero if REGNO is the number of a hard register in
which the values of called function may come back. */
#define FUNCTION_VALUE_REGNO_P(REGNO) \
(((REGNO) >= GR_RET_FIRST && (REGNO) <= GR_RET_LAST) \
|| ((REGNO) >= FR_RET_FIRST && (REGNO) <= FR_RET_LAST))
/* How Large Values are Returned */
/* A nonzero value says to return the function value in memory, just as large
structures are always returned. */
#define RETURN_IN_MEMORY(TYPE) \
ia64_return_in_memory (TYPE)
/* If you define this macro to be 0, then the conventions used for structure
and union return values are decided by the `RETURN_IN_MEMORY' macro. */
#define DEFAULT_PCC_STRUCT_RETURN 0
/* If the structure value address is passed in a register, then
`STRUCT_VALUE_REGNUM' should be the number of that register. */
#define STRUCT_VALUE_REGNUM GR_REG (8)
/* Caller-Saves Register Allocation */
/* A C expression to determine whether it is worthwhile to consider placing a
pseudo-register in a call-clobbered hard register and saving and restoring
it around each function call. The expression should be 1 when this is worth
doing, and 0 otherwise.
If you don't define this macro, a default is used which is good on most
machines: `4 * CALLS < REFS'. */
/* ??? Investigate. */
/* #define CALLER_SAVE_PROFITABLE(REFS, CALLS) */
/* Function Entry and Exit */
/* Define this macro as a C expression that is nonzero if the return
instruction or the function epilogue ignores the value of the stack pointer;
in other words, if it is safe to delete an instruction to adjust the stack
pointer before a return from the function. */
#define EXIT_IGNORE_STACK 1
/* Define this macro as a C expression that is nonzero for registers
used by the epilogue or the `return' pattern. */
#define EPILOGUE_USES(REGNO) ia64_epilogue_uses (REGNO)
/* Output at beginning of assembler file. */
#define ASM_FILE_START(FILE) \
emit_safe_across_calls (FILE)
/* A C compound statement that outputs the assembler code for a thunk function,
used to implement C++ virtual function calls with multiple inheritance. */
#define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \
do { \
if (CONST_OK_FOR_I (DELTA)) \
{ \
fprintf (FILE, "\tadds r32 = "); \
fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, (DELTA)); \
fprintf (FILE, ", r32\n"); \
} \
else \
{ \
if (CONST_OK_FOR_J (DELTA)) \
{ \
fprintf (FILE, "\taddl r2 = "); \
fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, (DELTA)); \
fprintf (FILE, ", r0\n"); \
} \
else \
{ \
fprintf (FILE, "\tmovl r2 = "); \
fprintf (FILE, HOST_WIDE_INT_PRINT_DEC, (DELTA)); \
fprintf (FILE, "\n"); \
} \
fprintf (FILE, "\t;;\n"); \
fprintf (FILE, "\tadd r32 = r2, r32\n"); \
} \
fprintf (FILE, "\tbr "); \
assemble_name (FILE, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \
fprintf (FILE, "\n"); \
} while (0)
/* Output part N of a function descriptor for DECL. For ia64, both
words are emitted with a single relocation, so ignore N > 0. */
#define ASM_OUTPUT_FDESC(FILE, DECL, PART) \
do { \
if ((PART) == 0) \
{ \
fputs ("\tdata16.ua @iplt(", FILE); \
assemble_name (FILE, XSTR (XEXP (DECL_RTL (DECL), 0), 0)); \
fputs (")\n", FILE); \
} \
} while (0)
/* Generating Code for Profiling. */
/* A C statement or compound statement to output to FILE some assembler code to
call the profiling subroutine `mcount'. */
#undef FUNCTION_PROFILER
#define FUNCTION_PROFILER(FILE, LABELNO) \
do { \
char buf[20]; \
ASM_GENERATE_INTERNAL_LABEL (buf, "LP", LABELNO); \
fputs ("\talloc out0 = ar.pfs, 8, 0, 4, 0\n", FILE); \
if (TARGET_AUTO_PIC) \
fputs ("\tmovl out3 = @gprel(", FILE); \
else \
fputs ("\taddl out3 = @ltoff(", FILE); \
assemble_name (FILE, buf); \
if (TARGET_AUTO_PIC) \
fputs (");;\n", FILE); \
else \
fputs ("), r1;;\n", FILE); \
fputs ("\tmov out1 = r1\n", FILE); \
fputs ("\tmov out2 = b0\n", FILE); \
fputs ("\tbr.call.sptk.many b0 = _mcount;;\n", FILE); \
} while (0)
/* Implementing the Varargs Macros. */
/* Define this macro to store the anonymous register arguments into the stack
so that all the arguments appear to have been passed consecutively on the
stack. */
#define SETUP_INCOMING_VARARGS(ARGS_SO_FAR, MODE, TYPE, PRETEND_ARGS_SIZE, SECOND_TIME) \
ia64_setup_incoming_varargs (ARGS_SO_FAR, MODE, TYPE, & PRETEND_ARGS_SIZE, SECOND_TIME)
/* Define this macro if the location where a function argument is passed
depends on whether or not it is a named argument. */
#define STRICT_ARGUMENT_NAMING 1
/* Trampolines for Nested Functions. */
/* We need 32 bytes, so we can save the sp, ar.rnat, ar.bsp, and ar.pfs of
the function containing a non-local goto target. */
#define STACK_SAVEAREA_MODE(LEVEL) \
((LEVEL) == SAVE_NONLOCAL ? OImode : Pmode)
/* Output assembler code for a block containing the constant parts of
a trampoline, leaving space for the variable parts.
The trampoline should set the static chain pointer to value placed
into the trampoline and should branch to the specified routine.
To make the normal indirect-subroutine calling convention work,
the trampoline must look like a function descriptor; the first
word being the target address and the second being the target's
global pointer.
We abuse the concept of a global pointer by arranging for it
to point to the data we need to load. The complete trampoline
has the following form:
+-------------------+ \
TRAMP: | __ia64_trampoline | |
+-------------------+ > fake function descriptor
| TRAMP+16 | |
+-------------------+ /
| target descriptor |
+-------------------+
| static link |
+-------------------+
*/
/* A C expression for the size in bytes of the trampoline, as an integer. */
#define TRAMPOLINE_SIZE 32
/* Alignment required for trampolines, in bits. */
#define TRAMPOLINE_ALIGNMENT 64
/* A C statement to initialize the variable parts of a trampoline. */
#define INITIALIZE_TRAMPOLINE(ADDR, FNADDR, STATIC_CHAIN) \
ia64_initialize_trampoline((ADDR), (FNADDR), (STATIC_CHAIN))
/* Implicit Calls to Library Routines */
/* Define this macro if GNU CC should generate calls to the System V (and ANSI
C) library functions `memcpy' and `memset' rather than the BSD functions
`bcopy' and `bzero'. */
#define TARGET_MEM_FUNCTIONS
/* Addressing Modes */
/* Define this macro if the machine supports post-increment addressing. */
#define HAVE_POST_INCREMENT 1
#define HAVE_POST_DECREMENT 1
#define HAVE_POST_MODIFY_DISP 1
#define HAVE_POST_MODIFY_REG 1
/* A C expression that is 1 if the RTX X is a constant which is a valid
address. */
#define CONSTANT_ADDRESS_P(X) 0
/* The max number of registers that can appear in a valid memory address. */
#define MAX_REGS_PER_ADDRESS 2
/* A C compound statement with a conditional `goto LABEL;' executed if X (an
RTX) is a legitimate memory address on the target machine for a memory
operand of mode MODE. */
#define LEGITIMATE_ADDRESS_REG(X) \
((GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \
|| (GET_CODE (X) == SUBREG && GET_CODE (XEXP (X, 0)) == REG \
&& REG_OK_FOR_BASE_P (XEXP (X, 0))))
#define LEGITIMATE_ADDRESS_DISP(R, X) \
(GET_CODE (X) == PLUS \
&& rtx_equal_p (R, XEXP (X, 0)) \
&& (LEGITIMATE_ADDRESS_REG (XEXP (X, 1)) \
|| (GET_CODE (XEXP (X, 1)) == CONST_INT \
&& INTVAL (XEXP (X, 1)) >= -256 \
&& INTVAL (XEXP (X, 1)) < 256)))
#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
do { \
if (LEGITIMATE_ADDRESS_REG (X)) \
goto LABEL; \
else if ((GET_CODE (X) == POST_INC || GET_CODE (X) == POST_DEC) \
&& LEGITIMATE_ADDRESS_REG (XEXP (X, 0)) \
&& XEXP (X, 0) != arg_pointer_rtx) \
goto LABEL; \
else if (GET_CODE (X) == POST_MODIFY \
&& LEGITIMATE_ADDRESS_REG (XEXP (X, 0)) \
&& XEXP (X, 0) != arg_pointer_rtx \
&& LEGITIMATE_ADDRESS_DISP (XEXP (X, 0), XEXP (X, 1))) \
goto LABEL; \
} while (0)
/* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for
use as a base register. */
#ifdef REG_OK_STRICT
#define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
#else
#define REG_OK_FOR_BASE_P(X) \
(GENERAL_REGNO_P (REGNO (X)) || (REGNO (X) >= FIRST_PSEUDO_REGISTER))
#endif
/* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for
use as an index register. This is needed for POST_MODIFY. */
#define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X)
/* A C compound statement that attempts to replace X with a valid memory
address for an operand of mode MODE.
This must be present, but there is nothing useful to be done here. */
#define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN)
/* A C statement or compound statement with a conditional `goto LABEL;'
executed if memory address X (an RTX) can have different meanings depending
on the machine mode of the memory reference it is used for or if the address
is valid for some modes but not others. */
#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \
if (GET_CODE (ADDR) == POST_DEC || GET_CODE (ADDR) == POST_INC) \
goto LABEL;
/* A C expression that is nonzero if X is a legitimate constant for an
immediate operand on the target machine. */
#define LEGITIMATE_CONSTANT_P(X) \
(GET_CODE (X) != CONST_DOUBLE || GET_MODE (X) == VOIDmode \
|| GET_MODE (X) == DImode || CONST_DOUBLE_OK_FOR_G (X)) \
/* Condition Code Status */
/* One some machines not all possible comparisons are defined, but you can
convert an invalid comparison into a valid one. */
/* ??? Investigate. See the alpha definition. */
/* #define CANONICALIZE_COMPARISON(CODE, OP0, OP1) */
/* Describing Relative Costs of Operations */
/* A part of a C `switch' statement that describes the relative costs of
constant RTL expressions. */
/* ??? This is incomplete. */
#define CONST_COSTS(X, CODE, OUTER_CODE) \
case CONST_INT: \
if ((X) == const0_rtx) \
return 0; \
switch (OUTER_CODE) \
{ \
case SET: \
return CONST_OK_FOR_J (INTVAL (X)) ? 0 : COSTS_N_INSNS (1); \
case PLUS: \
if (CONST_OK_FOR_I (INTVAL (X))) \
return 0; \
if (CONST_OK_FOR_J (INTVAL (X))) \
return 1; \
return COSTS_N_INSNS (1); \
default: \
if (CONST_OK_FOR_K (INTVAL (X)) || CONST_OK_FOR_L (INTVAL (X))) \
return 0; \
return COSTS_N_INSNS (1); \
} \
case CONST_DOUBLE: \
return COSTS_N_INSNS (1); \
case CONST: \
case SYMBOL_REF: \
case LABEL_REF: \
return COSTS_N_INSNS (3);
/* Like `CONST_COSTS' but applies to nonconstant RTL expressions. */
#define RTX_COSTS(X, CODE, OUTER_CODE) \
case MULT: \
/* For multiplies wider than HImode, we have to go to the FPU, \
which normally involves copies. Plus there's the latency \
of the multiply itself, and the latency of the instructions to \
transfer integer regs to FP regs. */ \
if (GET_MODE_SIZE (GET_MODE (X)) > 2) \
return COSTS_N_INSNS (10); \
return COSTS_N_INSNS (2); \
case PLUS: \
case MINUS: \
case ASHIFT: \
case ASHIFTRT: \
case LSHIFTRT: \
return COSTS_N_INSNS (1); \
case DIV: \
case UDIV: \
case MOD: \
case UMOD: \
/* We make divide expensive, so that divide-by-constant will be \
optimized to a multiply. */ \
return COSTS_N_INSNS (60);
/* An expression giving the cost of an addressing mode that contains ADDRESS.
If not defined, the cost is computed from the ADDRESS expression and the
`CONST_COSTS' values. */
#define ADDRESS_COST(ADDRESS) 0
/* A C expression for the cost of moving data from a register in class FROM to
one in class TO, using MODE. */
#define REGISTER_MOVE_COST ia64_register_move_cost
/* A C expression for the cost of moving data of mode M between a
register and memory. */
#define MEMORY_MOVE_COST(MODE,CLASS,IN) \
((CLASS) == GENERAL_REGS || (CLASS) == FR_REGS \
|| (CLASS) == GR_AND_FR_REGS ? 4 : 10)
/* A C expression for the cost of a branch instruction. A value of 1 is the
default; other values are interpreted relative to that. Used by the
if-conversion code as max instruction count. */
/* ??? This requires investigation. The primary effect might be how
many additional insn groups we run into, vs how good the dynamic
branch predictor is. */
#define BRANCH_COST 6
/* Define this macro as a C expression which is nonzero if accessing less than
a word of memory (i.e. a `char' or a `short') is no faster than accessing a
word of memory. */
#define SLOW_BYTE_ACCESS 1
/* Define this macro if it is as good or better to call a constant function
address than to call an address kept in a register.
Indirect function calls are more expensive that direct function calls, so
don't cse function addresses. */
#define NO_FUNCTION_CSE
/* Dividing the output into sections. */
/* A C expression whose value is a string containing the assembler operation
that should precede instructions and read-only data. */
#define TEXT_SECTION_ASM_OP "\t.text"
/* A C expression whose value is a string containing the assembler operation to
identify the following data as writable initialized data. */
#define DATA_SECTION_ASM_OP "\t.data"
/* If defined, a C expression whose value is a string containing the assembler
operation to identify the following data as uninitialized global data. */
#define BSS_SECTION_ASM_OP "\t.bss"
/* 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). */
#define ENCODE_SECTION_INFO(DECL) ia64_encode_section_info (DECL)
/* If a variable is weakened, made one only or moved into a different
section, it may be necessary to redo the section info to move the
variable out of sdata. */
#define REDO_SECTION_INFO_P(DECL) \
((TREE_CODE (DECL) == VAR_DECL) \
&& (DECL_ONE_ONLY (DECL) || DECL_WEAK (DECL) || DECL_COMMON (DECL) \
|| DECL_SECTION_NAME (DECL) != 0))
#define SDATA_NAME_FLAG_CHAR '@'
#define IA64_DEFAULT_GVALUE 8
/* Decode SYM_NAME and store the real name part in VAR, sans the characters
that encode section info. */
#define STRIP_NAME_ENCODING(VAR, SYMBOL_NAME) \
do { \
(VAR) = (SYMBOL_NAME); \
if ((VAR)[0] == SDATA_NAME_FLAG_CHAR) \
(VAR)++; \
if ((VAR)[0] == '*') \
(VAR)++; \
} while (0)
/* Position Independent Code. */
/* The register number of the register used to address a table of static data
addresses in memory. */
/* ??? Should modify ia64.md to use pic_offset_table_rtx instead of
gen_rtx_REG (DImode, 1). */
/* ??? Should we set flag_pic? Probably need to define
LEGITIMIZE_PIC_OPERAND_P to make that work. */
#define PIC_OFFSET_TABLE_REGNUM GR_REG (1)
/* Define this macro if the register defined by `PIC_OFFSET_TABLE_REGNUM' is
clobbered by calls. */
#define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED
/* The Overall Framework of an Assembler 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. */
#define ASM_COMMENT_START "//"
/* A C string constant for text to be output before each `asm' statement or
group of consecutive ones. */
/* ??? This won't work with the Intel assembler, because it does not accept
# as a comment start character. However, //APP does not work in gas, so we
can't use that either. Same problem for ASM_APP_OFF below. */
#define ASM_APP_ON "#APP\n"
/* A C string constant for text to be output after each `asm' statement or
group of consecutive ones. */
#define ASM_APP_OFF "#NO_APP\n"
/* Output of Data. */
/* This is how to output an assembler line defining a `char' constant
to an xdata segment. */
#define ASM_OUTPUT_XDATA_CHAR(FILE, SECTION, VALUE) \
do { \
fprintf (FILE, "\t.xdata1\t\"%s\", ", SECTION); \
output_addr_const (FILE, (VALUE)); \
fprintf (FILE, "\n"); \
} while (0)
/* This is how to output an assembler line defining a `short' constant
to an xdata segment. */
#define ASM_OUTPUT_XDATA_SHORT(FILE, SECTION, VALUE) \
do { \
fprintf (FILE, "\t.xdata2\t\"%s\", ", SECTION); \
output_addr_const (FILE, (VALUE)); \
fprintf (FILE, "\n"); \
} while (0)
/* This is how to output an assembler line defining an `int' constant
to an xdata segment. We also handle symbol output here. */
/* ??? For ILP32, also need to handle function addresses here. */
#define ASM_OUTPUT_XDATA_INT(FILE, SECTION, VALUE) \
do { \
fprintf (FILE, "\t.xdata4\t\"%s\", ", SECTION); \
output_addr_const (FILE, (VALUE)); \
fprintf (FILE, "\n"); \
} while (0)
/* This is how to output an assembler line defining a `long' constant
to an xdata segment. We also handle symbol output here. */
#define ASM_OUTPUT_XDATA_DOUBLE_INT(FILE, SECTION, VALUE) \
do { \
int need_closing_paren = 0; \
fprintf (FILE, "\t.xdata8\t\"%s\", ", SECTION); \
if (!(TARGET_NO_PIC || TARGET_AUTO_PIC) \
&& GET_CODE (VALUE) == SYMBOL_REF) \
{ \
fprintf (FILE, SYMBOL_REF_FLAG (VALUE) ? "@fptr(" : "@segrel("); \
need_closing_paren = 1; \
} \
output_addr_const (FILE, VALUE); \
if (need_closing_paren) \
fprintf (FILE, ")"); \
fprintf (FILE, "\n"); \
} while (0)
/* Output of Uninitialized Variables. */
/* This is all handled by svr4.h. */
/* Output and Generation of Labels. */
/* A C statement (sans semicolon) to output to the stdio stream STREAM the
assembler definition of a label named NAME. */
/* See the ASM_OUTPUT_LABELREF definition in sysv4.h for an explanation of
why ia64_asm_output_label exists. */
extern int ia64_asm_output_label;
#define ASM_OUTPUT_LABEL(STREAM, NAME) \
do { \
ia64_asm_output_label = 1; \
assemble_name (STREAM, NAME); \
fputs (":\n", STREAM); \
ia64_asm_output_label = 0; \
} while (0)
/* A C statement (sans semicolon) to output to the stdio stream STREAM some
commands that will make the label NAME global; that is, available for
reference from other files. */
#define ASM_GLOBALIZE_LABEL(STREAM,NAME) \
do { \
fputs ("\t.global ", STREAM); \
assemble_name (STREAM, NAME); \
fputs ("\n", STREAM); \
} while (0)
/* A C statement (sans semicolon) to output to the stdio stream STREAM any text
necessary for declaring the name of an external symbol named NAME which is
referenced in this compilation but not defined. */
#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) \
ia64_asm_output_external (FILE, DECL, NAME)
/* A C statement to store into the string STRING a label whose name is made
from the string PREFIX and the number NUM. */
#define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
do { \
sprintf (LABEL, "*.%s%d", PREFIX, NUM); \
} while (0)
/* A C expression to assign to OUTVAR (which is a variable of type `char *') a
newly allocated string made from the string NAME and the number NUMBER, with
some suitable punctuation added. */
/* ??? Not sure if using a ? in the name for Intel as is safe. */
#define ASM_FORMAT_PRIVATE_NAME(OUTVAR, NAME, NUMBER) \
do { \
(OUTVAR) = (char *) alloca (strlen (NAME) + 12); \
sprintf (OUTVAR, "%s%c%ld", (NAME), (TARGET_GNU_AS ? '.' : '?'), \
(long)(NUMBER)); \
} while (0)
/* A C statement to output to the stdio stream STREAM assembler code which
defines (equates) the symbol NAME to have the value VALUE. */
#define ASM_OUTPUT_DEF(STREAM, NAME, VALUE) \
do { \
assemble_name (STREAM, NAME); \
fputs (" = ", STREAM); \
assemble_name (STREAM, VALUE); \
fputc ('\n', STREAM); \
} while (0)
/* Macros Controlling Initialization Routines. */
/* This is handled by svr4.h and sysv4.h. */
/* Output of Assembler Instructions. */
/* A C initializer containing the assembler's names for the machine registers,
each one as a C string constant. */
#define REGISTER_NAMES \
{ \
/* General registers. */ \
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", \
"r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19", \
"r20", "r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28", "r29", \
"r30", "r31", \
/* Local registers. */ \
"loc0", "loc1", "loc2", "loc3", "loc4", "loc5", "loc6", "loc7", \
"loc8", "loc9", "loc10","loc11","loc12","loc13","loc14","loc15", \
"loc16","loc17","loc18","loc19","loc20","loc21","loc22","loc23", \
"loc24","loc25","loc26","loc27","loc28","loc29","loc30","loc31", \
"loc32","loc33","loc34","loc35","loc36","loc37","loc38","loc39", \
"loc40","loc41","loc42","loc43","loc44","loc45","loc46","loc47", \
"loc48","loc49","loc50","loc51","loc52","loc53","loc54","loc55", \
"loc56","loc57","loc58","loc59","loc60","loc61","loc62","loc63", \
"loc64","loc65","loc66","loc67","loc68","loc69","loc70","loc71", \
"loc72","loc73","loc74","loc75","loc76","loc77","loc78","loc79", \
/* Input registers. */ \
"in0", "in1", "in2", "in3", "in4", "in5", "in6", "in7", \
/* Output registers. */ \
"out0", "out1", "out2", "out3", "out4", "out5", "out6", "out7", \
/* Floating-point registers. */ \
"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", "f8", "f9", \
"f10", "f11", "f12", "f13", "f14", "f15", "f16", "f17", "f18", "f19", \
"f20", "f21", "f22", "f23", "f24", "f25", "f26", "f27", "f28", "f29", \
"f30", "f31", "f32", "f33", "f34", "f35", "f36", "f37", "f38", "f39", \
"f40", "f41", "f42", "f43", "f44", "f45", "f46", "f47", "f48", "f49", \
"f50", "f51", "f52", "f53", "f54", "f55", "f56", "f57", "f58", "f59", \
"f60", "f61", "f62", "f63", "f64", "f65", "f66", "f67", "f68", "f69", \
"f70", "f71", "f72", "f73", "f74", "f75", "f76", "f77", "f78", "f79", \
"f80", "f81", "f82", "f83", "f84", "f85", "f86", "f87", "f88", "f89", \
"f90", "f91", "f92", "f93", "f94", "f95", "f96", "f97", "f98", "f99", \
"f100","f101","f102","f103","f104","f105","f106","f107","f108","f109",\
"f110","f111","f112","f113","f114","f115","f116","f117","f118","f119",\
"f120","f121","f122","f123","f124","f125","f126","f127", \
/* Predicate registers. */ \
"p0", "p1", "p2", "p3", "p4", "p5", "p6", "p7", "p8", "p9", \
"p10", "p11", "p12", "p13", "p14", "p15", "p16", "p17", "p18", "p19", \
"p20", "p21", "p22", "p23", "p24", "p25", "p26", "p27", "p28", "p29", \
"p30", "p31", "p32", "p33", "p34", "p35", "p36", "p37", "p38", "p39", \
"p40", "p41", "p42", "p43", "p44", "p45", "p46", "p47", "p48", "p49", \
"p50", "p51", "p52", "p53", "p54", "p55", "p56", "p57", "p58", "p59", \
"p60", "p61", "p62", "p63", \
/* Branch registers. */ \
"b0", "b1", "b2", "b3", "b4", "b5", "b6", "b7", \
/* Frame pointer. Return address. */ \
"sfp", "retaddr", "ar.ccv", "ar.unat", "ar.pfs", "ar.lc", "ar.ec", \
}
/* If defined, a C initializer for an array of structures containing a name and
a register number. This macro defines additional names for hard registers,
thus allowing the `asm' option in declarations to refer to registers using
alternate names. */
#define ADDITIONAL_REGISTER_NAMES \
{ \
{ "gp", R_GR (1) }, \
{ "sp", R_GR (12) }, \
{ "in0", IN_REG (0) }, \
{ "in1", IN_REG (1) }, \
{ "in2", IN_REG (2) }, \
{ "in3", IN_REG (3) }, \
{ "in4", IN_REG (4) }, \
{ "in5", IN_REG (5) }, \
{ "in6", IN_REG (6) }, \
{ "in7", IN_REG (7) }, \
{ "out0", OUT_REG (0) }, \
{ "out1", OUT_REG (1) }, \
{ "out2", OUT_REG (2) }, \
{ "out3", OUT_REG (3) }, \
{ "out4", OUT_REG (4) }, \
{ "out5", OUT_REG (5) }, \
{ "out6", OUT_REG (6) }, \
{ "out7", OUT_REG (7) }, \
{ "loc0", LOC_REG (0) }, \
{ "loc1", LOC_REG (1) }, \
{ "loc2", LOC_REG (2) }, \
{ "loc3", LOC_REG (3) }, \
{ "loc4", LOC_REG (4) }, \
{ "loc5", LOC_REG (5) }, \
{ "loc6", LOC_REG (6) }, \
{ "loc7", LOC_REG (7) }, \
{ "loc8", LOC_REG (8) }, \
{ "loc9", LOC_REG (9) }, \
{ "loc10", LOC_REG (10) }, \
{ "loc11", LOC_REG (11) }, \
{ "loc12", LOC_REG (12) }, \
{ "loc13", LOC_REG (13) }, \
{ "loc14", LOC_REG (14) }, \
{ "loc15", LOC_REG (15) }, \
{ "loc16", LOC_REG (16) }, \
{ "loc17", LOC_REG (17) }, \
{ "loc18", LOC_REG (18) }, \
{ "loc19", LOC_REG (19) }, \
{ "loc20", LOC_REG (20) }, \
{ "loc21", LOC_REG (21) }, \
{ "loc22", LOC_REG (22) }, \
{ "loc23", LOC_REG (23) }, \
{ "loc24", LOC_REG (24) }, \
{ "loc25", LOC_REG (25) }, \
{ "loc26", LOC_REG (26) }, \
{ "loc27", LOC_REG (27) }, \
{ "loc28", LOC_REG (28) }, \
{ "loc29", LOC_REG (29) }, \
{ "loc30", LOC_REG (30) }, \
{ "loc31", LOC_REG (31) }, \
{ "loc32", LOC_REG (32) }, \
{ "loc33", LOC_REG (33) }, \
{ "loc34", LOC_REG (34) }, \
{ "loc35", LOC_REG (35) }, \
{ "loc36", LOC_REG (36) }, \
{ "loc37", LOC_REG (37) }, \
{ "loc38", LOC_REG (38) }, \
{ "loc39", LOC_REG (39) }, \
{ "loc40", LOC_REG (40) }, \
{ "loc41", LOC_REG (41) }, \
{ "loc42", LOC_REG (42) }, \
{ "loc43", LOC_REG (43) }, \
{ "loc44", LOC_REG (44) }, \
{ "loc45", LOC_REG (45) }, \
{ "loc46", LOC_REG (46) }, \
{ "loc47", LOC_REG (47) }, \
{ "loc48", LOC_REG (48) }, \
{ "loc49", LOC_REG (49) }, \
{ "loc50", LOC_REG (50) }, \
{ "loc51", LOC_REG (51) }, \
{ "loc52", LOC_REG (52) }, \
{ "loc53", LOC_REG (53) }, \
{ "loc54", LOC_REG (54) }, \
{ "loc55", LOC_REG (55) }, \
{ "loc56", LOC_REG (56) }, \
{ "loc57", LOC_REG (57) }, \
{ "loc58", LOC_REG (58) }, \
{ "loc59", LOC_REG (59) }, \
{ "loc60", LOC_REG (60) }, \
{ "loc61", LOC_REG (61) }, \
{ "loc62", LOC_REG (62) }, \
{ "loc63", LOC_REG (63) }, \
{ "loc64", LOC_REG (64) }, \
{ "loc65", LOC_REG (65) }, \
{ "loc66", LOC_REG (66) }, \
{ "loc67", LOC_REG (67) }, \
{ "loc68", LOC_REG (68) }, \
{ "loc69", LOC_REG (69) }, \
{ "loc70", LOC_REG (70) }, \
{ "loc71", LOC_REG (71) }, \
{ "loc72", LOC_REG (72) }, \
{ "loc73", LOC_REG (73) }, \
{ "loc74", LOC_REG (74) }, \
{ "loc75", LOC_REG (75) }, \
{ "loc76", LOC_REG (76) }, \
{ "loc77", LOC_REG (77) }, \
{ "loc78", LOC_REG (78) }, \
{ "loc79", LOC_REG (79) }, \
}
/* A C compound statement to output to stdio stream STREAM the assembler syntax
for an instruction operand X. X is an RTL expression. */
#define PRINT_OPERAND(STREAM, X, CODE) \
ia64_print_operand (STREAM, X, CODE)
/* A C expression which evaluates to true if CODE is a valid punctuation
character for use in the `PRINT_OPERAND' macro. */
/* ??? Keep this around for now, as we might need it later. */
#define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
((CODE) == '+' || (CODE) == ',')
/* 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 X. X
is an RTL expression. */
#define PRINT_OPERAND_ADDRESS(STREAM, X) \
ia64_print_operand_address (STREAM, X)
/* If defined, C string expressions to be used for the `%R', `%L', `%U', and
`%I' options of `asm_fprintf' (see `final.c'). */
#define REGISTER_PREFIX ""
#define LOCAL_LABEL_PREFIX "."
#define USER_LABEL_PREFIX ""
#define IMMEDIATE_PREFIX ""
/* Output of dispatch tables. */
/* This macro should be provided on machines where the addresses in a dispatch
table are relative to the table's own address. */
/* ??? Depends on the pointer size. */
#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \
fprintf (STREAM, "\tdata8 @pcrel(.L%d)\n", VALUE)
/* This is how to output an element of a case-vector that is absolute.
(Ia64 does not use such vectors, but we must define this macro anyway.) */
#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) abort ()
/* Jump tables only need 8 byte alignment. */
#define ADDR_VEC_ALIGN(ADDR_VEC) 3
/* Assembler Commands for Exception Regions. */
/* Select a format to encode pointers in exception handling data. CODE
is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is
true if the symbol may be affected by dynamic relocations. */
#define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \
(((CODE) == 1 ? DW_EH_PE_textrel : DW_EH_PE_datarel) \
| ((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_udata8)
/* Handle special EH pointer encodings. Absolute, pc-relative, and
indirect are handled automatically. */
#define ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX(FILE, ENCODING, SIZE, ADDR, DONE) \
do { \
const char *reltag = NULL; \
if (((ENCODING) & 0xF0) == DW_EH_PE_textrel) \
reltag = "@segrel("; \
else if (((ENCODING) & 0xF0) == DW_EH_PE_datarel) \
reltag = "@gprel("; \
if (reltag) \
{ \
fputs (integer_asm_op (SIZE, FALSE), FILE); \
fputs (reltag, FILE); \
assemble_name (FILE, XSTR (ADDR, 0)); \
fputc (')', FILE); \
goto DONE; \
} \
} while (0)
/* Assembler Commands for Alignment. */
/* ??? Investigate. */
/* The alignment (log base 2) to put in front of LABEL, which follows
a BARRIER. */
/* #define LABEL_ALIGN_AFTER_BARRIER(LABEL) */
/* The desired alignment for the location counter at the beginning
of a loop. */
/* #define LOOP_ALIGN(LABEL) */
/* Define this macro if `ASM_OUTPUT_SKIP' should not be used in the text
section because it fails put zeros in the bytes that are skipped. */
#define ASM_NO_SKIP_IN_TEXT 1
/* A C statement to output to the stdio stream STREAM an assembler command to
advance the location counter to a multiple of 2 to the POWER bytes. */
#define ASM_OUTPUT_ALIGN(STREAM, POWER) \
fprintf (STREAM, "\t.align %d\n", 1<<(POWER))
/* Macros Affecting all Debug Formats. */
/* This is handled in svr4.h and sysv4.h. */
/* Specific Options for DBX Output. */
/* This is handled by dbxelf.h which is included by svr4.h. */
/* Open ended Hooks for DBX Output. */
/* Likewise. */
/* File names in DBX format. */
/* Likewise. */
/* Macros for SDB and Dwarf Output. */
/* Define this macro if GNU CC should produce dwarf version 2 format debugging
output in response to the `-g' option. */
#define DWARF2_DEBUGGING_INFO
#define DWARF2_ASM_LINE_DEBUG_INFO (TARGET_DWARF2_ASM)
/* Use tags for debug info labels, so that they don't break instruction
bundles. This also avoids getting spurious DV warnings from the
assembler. This is similar to ASM_OUTPUT_INTERNAL_LABEL, except that we
add brackets around the label. */
#define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \
fprintf (FILE, "[.%s%d:]\n", PREFIX, NUM)
/* Use section-relative relocations for debugging offsets. Unlike other
targets that fake this by putting the section VMA at 0, IA-64 has
proper relocations for them. */
#define ASM_OUTPUT_DWARF_OFFSET(FILE, SIZE, LABEL) \
do { \
fputs (integer_asm_op (SIZE, FALSE), FILE); \
fputs ("@secrel(", FILE); \
assemble_name (FILE, LABEL); \
fputc (')', FILE); \
} while (0)
/* Emit a PC-relative relocation. */
#define ASM_OUTPUT_DWARF_PCREL(FILE, SIZE, LABEL) \
do { \
fputs (integer_asm_op (SIZE, FALSE), FILE); \
fputs ("@pcrel(", FILE); \
assemble_name (FILE, LABEL); \
fputc (')', FILE); \
} while (0)
/* Cross Compilation and Floating Point. */
/* Define to enable software floating point emulation. */
#define REAL_ARITHMETIC
/* Register Renaming Parameters. */
/* A C expression that is nonzero if hard register number REGNO2 can be
considered for use as a rename register for REGNO1 */
#define HARD_REGNO_RENAME_OK(REGNO1,REGNO2) \
ia64_hard_regno_rename_ok((REGNO1), (REGNO2))
/* Miscellaneous Parameters. */
/* Define this if you have defined special-purpose predicates in the file
`MACHINE.c'. For each predicate, list all rtl codes that can be in
expressions matched by the predicate. */
#define PREDICATE_CODES \
{ "call_operand", {SUBREG, REG, SYMBOL_REF}}, \
{ "got_symbolic_operand", {SYMBOL_REF, CONST, LABEL_REF}}, \
{ "sdata_symbolic_operand", {SYMBOL_REF, CONST}}, \
{ "symbolic_operand", {SYMBOL_REF, CONST, LABEL_REF}}, \
{ "function_operand", {SYMBOL_REF}}, \
{ "setjmp_operand", {SYMBOL_REF}}, \
{ "destination_operand", {SUBREG, REG, MEM}}, \
{ "not_postinc_memory_operand", {MEM}}, \
{ "move_operand", {SUBREG, REG, MEM, CONST_INT, CONST_DOUBLE, \
CONSTANT_P_RTX, SYMBOL_REF, CONST, LABEL_REF}}, \
{ "gr_register_operand", {SUBREG, REG}}, \
{ "fr_register_operand", {SUBREG, REG}}, \
{ "grfr_register_operand", {SUBREG, REG}}, \
{ "gr_nonimmediate_operand", {SUBREG, REG, MEM}}, \
{ "fr_nonimmediate_operand", {SUBREG, REG, MEM}}, \
{ "grfr_nonimmediate_operand", {SUBREG, REG, MEM}}, \
{ "gr_reg_or_0_operand", {SUBREG, REG, CONST_INT}}, \
{ "gr_reg_or_5bit_operand", {SUBREG, REG, CONST_INT, CONSTANT_P_RTX}}, \
{ "gr_reg_or_6bit_operand", {SUBREG, REG, CONST_INT, CONSTANT_P_RTX}}, \
{ "gr_reg_or_8bit_operand", {SUBREG, REG, CONST_INT, CONSTANT_P_RTX}}, \
{ "grfr_reg_or_8bit_operand", {SUBREG, REG, CONST_INT, CONSTANT_P_RTX}}, \
{ "gr_reg_or_8bit_adjusted_operand", {SUBREG, REG, CONST_INT, \
CONSTANT_P_RTX}}, \
{ "gr_reg_or_8bit_and_adjusted_operand", {SUBREG, REG, CONST_INT, \
CONSTANT_P_RTX}}, \
{ "gr_reg_or_14bit_operand", {SUBREG, REG, CONST_INT, CONSTANT_P_RTX}}, \
{ "gr_reg_or_22bit_operand", {SUBREG, REG, CONST_INT, CONSTANT_P_RTX}}, \
{ "shift_count_operand", {SUBREG, REG, CONST_INT, CONSTANT_P_RTX}}, \
{ "shift_32bit_count_operand", {SUBREG, REG, CONST_INT, \
CONSTANT_P_RTX}}, \
{ "shladd_operand", {CONST_INT}}, \
{ "fetchadd_operand", {CONST_INT}}, \
{ "fr_reg_or_fp01_operand", {SUBREG, REG, CONST_DOUBLE}}, \
{ "normal_comparison_operator", {EQ, NE, GT, LE, GTU, LEU}}, \
{ "adjusted_comparison_operator", {LT, GE, LTU, GEU}}, \
{ "signed_inequality_operator", {GE, GT, LE, LT}}, \
{ "predicate_operator", {NE, EQ}}, \
{ "condop_operator", {PLUS, MINUS, IOR, XOR, AND}}, \
{ "ar_lc_reg_operand", {REG}}, \
{ "ar_ccv_reg_operand", {REG}}, \
{ "ar_pfs_reg_operand", {REG}}, \
{ "general_tfmode_operand", {SUBREG, REG, CONST_DOUBLE, MEM}}, \
{ "destination_tfmode_operand", {SUBREG, REG, MEM}}, \
{ "tfreg_or_fp01_operand", {REG, CONST_DOUBLE}},
/* An alias for a machine mode name. This is the machine mode that elements of
a jump-table should have. */
#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. */
#define CASE_VECTOR_PC_RELATIVE 1
/* Define this macro if operations between registers with integral mode smaller
than a word are always performed on the entire register. */
#define WORD_REGISTER_OPERATIONS
/* Define this macro to be a C expression indicating when insns that read
memory in MODE, an integral mode narrower than a word, set the bits outside
of MODE to be either the sign-extension or the zero-extension of the data
read. */
#define LOAD_EXTEND_OP(MODE) ZERO_EXTEND
/* The maximum number of bytes that a single instruction can move quickly from
memory to memory. */
#define MOVE_MAX 8
/* A C expression which is nonzero if on this machine it is safe to "convert"
an integer of INPREC bits to one of OUTPREC bits (where OUTPREC is smaller
than INPREC) by merely operating on it as if it had only OUTPREC bits. */
#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
/* A C expression describing the value returned by a comparison operator with
an integral mode and stored by a store-flag instruction (`sCOND') when the
condition is true. */
/* ??? Investigate using -1 instead of 1. */
#define STORE_FLAG_VALUE 1
/* An alias for the machine mode for pointers. */
/* ??? This would change if we had ILP32 support. */
#define Pmode DImode
/* An alias for the machine mode used for memory references to functions being
called, in `call' RTL expressions. */
#define FUNCTION_MODE Pmode
/* Define this macro to handle System V style pragmas: #pragma pack and
#pragma weak. Note, #pragma weak will only be supported if SUPPORT_WEAK is
defined. */
/* If this architecture supports prefetch, define this to be the number of
prefetch commands that can be executed in parallel.
??? This number is bogus and needs to be replaced before the value is
actually used in optimizations. */
#define SIMULTANEOUS_PREFETCHES 6
/* If this architecture supports prefetch, define this to be the size of
the cache line that is prefetched. */
#define PREFETCH_BLOCK 32
#define HANDLE_SYSV_PRAGMA
/* In rare cases, correct code generation requires extra machine dependent
processing between the second jump optimization pass and delayed branch
scheduling. On those machines, define this macro as a C statement to act on
the code starting at INSN. */
#define MACHINE_DEPENDENT_REORG(INSN) ia64_reorg (INSN)
/* A C expression for the maximum number of instructions to execute via
conditional execution instructions instead of a branch. A value of
BRANCH_COST+1 is the default if the machine does not use
cc0, and 1 if it does use cc0. */
/* ??? Investigate. */
#define MAX_CONDITIONAL_EXECUTE 12
extern int ia64_final_schedule;
#define IA64_UNWIND_INFO 1
#define IA64_UNWIND_EMIT(f,i) process_for_unwind_directive (f,i)
#define EH_RETURN_DATA_REGNO(N) ((N) < 4 ? (N) + 15 : INVALID_REGNUM)
/* This function contains machine specific function data. */
struct machine_function
{
/* The new stack pointer when unwinding from EH. */
struct rtx_def* ia64_eh_epilogue_sp;
/* The new bsp value when unwinding from EH. */
struct rtx_def* ia64_eh_epilogue_bsp;
/* The GP value save register. */
struct rtx_def* ia64_gp_save;
/* The number of varargs registers to save. */
int n_varargs;
};
enum ia64_builtins
{
IA64_BUILTIN_SYNCHRONIZE,
IA64_BUILTIN_FETCH_AND_ADD_SI,
IA64_BUILTIN_FETCH_AND_SUB_SI,
IA64_BUILTIN_FETCH_AND_OR_SI,
IA64_BUILTIN_FETCH_AND_AND_SI,
IA64_BUILTIN_FETCH_AND_XOR_SI,
IA64_BUILTIN_FETCH_AND_NAND_SI,
IA64_BUILTIN_ADD_AND_FETCH_SI,
IA64_BUILTIN_SUB_AND_FETCH_SI,
IA64_BUILTIN_OR_AND_FETCH_SI,
IA64_BUILTIN_AND_AND_FETCH_SI,
IA64_BUILTIN_XOR_AND_FETCH_SI,
IA64_BUILTIN_NAND_AND_FETCH_SI,
IA64_BUILTIN_BOOL_COMPARE_AND_SWAP_SI,
IA64_BUILTIN_VAL_COMPARE_AND_SWAP_SI,
IA64_BUILTIN_SYNCHRONIZE_SI,
IA64_BUILTIN_LOCK_TEST_AND_SET_SI,
IA64_BUILTIN_LOCK_RELEASE_SI,
IA64_BUILTIN_FETCH_AND_ADD_DI,
IA64_BUILTIN_FETCH_AND_SUB_DI,
IA64_BUILTIN_FETCH_AND_OR_DI,
IA64_BUILTIN_FETCH_AND_AND_DI,
IA64_BUILTIN_FETCH_AND_XOR_DI,
IA64_BUILTIN_FETCH_AND_NAND_DI,
IA64_BUILTIN_ADD_AND_FETCH_DI,
IA64_BUILTIN_SUB_AND_FETCH_DI,
IA64_BUILTIN_OR_AND_FETCH_DI,
IA64_BUILTIN_AND_AND_FETCH_DI,
IA64_BUILTIN_XOR_AND_FETCH_DI,
IA64_BUILTIN_NAND_AND_FETCH_DI,
IA64_BUILTIN_BOOL_COMPARE_AND_SWAP_DI,
IA64_BUILTIN_VAL_COMPARE_AND_SWAP_DI,
IA64_BUILTIN_SYNCHRONIZE_DI,
IA64_BUILTIN_LOCK_TEST_AND_SET_DI,
IA64_BUILTIN_LOCK_RELEASE_DI,
IA64_BUILTIN_BSP,
IA64_BUILTIN_FLUSHRS
};
/* Codes for expand_compare_and_swap and expand_swap_and_compare. */
enum fetchop_code {
IA64_ADD_OP, IA64_SUB_OP, IA64_OR_OP, IA64_AND_OP, IA64_XOR_OP, IA64_NAND_OP
};
/* End of ia64.h */
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