| /* Definitions of target machine GNU compiler. IA-64 version. |
| Copyright (C) 1999-2020 Free Software Foundation, Inc. |
| Contributed by James E. Wilson <wilson@cygnus.com> and |
| David Mosberger <davidm@hpl.hp.com>. |
| |
| This file is part of GCC. |
| |
| GCC is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3, or (at your option) |
| any later version. |
| |
| GCC is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* ??? 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. */ |
| |
| |
| /* Run-time target specifications */ |
| |
| /* Target CPU builtins. */ |
| #define TARGET_CPU_CPP_BUILTINS() \ |
| do { \ |
| builtin_assert("cpu=ia64"); \ |
| builtin_assert("machine=ia64"); \ |
| builtin_define("__ia64"); \ |
| builtin_define("__ia64__"); \ |
| builtin_define("__itanium__"); \ |
| if (TARGET_BIG_ENDIAN) \ |
| builtin_define("__BIG_ENDIAN__"); \ |
| builtin_define("__SIZEOF_FPREG__=16"); \ |
| builtin_define("__SIZEOF_FLOAT80__=16");\ |
| builtin_define("__SIZEOF_FLOAT128__=16");\ |
| } while (0) |
| |
| #ifndef SUBTARGET_EXTRA_SPECS |
| #define SUBTARGET_EXTRA_SPECS |
| #endif |
| |
| #define EXTRA_SPECS \ |
| { "asm_extra", ASM_EXTRA_SPEC }, \ |
| SUBTARGET_EXTRA_SPECS |
| |
| #define CC1_SPEC "%(cc1_cpu) " |
| |
| #define ASM_EXTRA_SPEC "" |
| |
| /* Variables which are this size or smaller are put in the sdata/sbss |
| sections. */ |
| extern unsigned int ia64_section_threshold; |
| |
| /* If the assembler supports thread-local storage, assume that the |
| system does as well. If a particular target system has an |
| assembler that supports TLS -- but the rest of the system does not |
| support TLS -- that system should explicit define TARGET_HAVE_TLS |
| to false in its own configuration file. */ |
| #if !defined(TARGET_HAVE_TLS) && defined(HAVE_AS_TLS) |
| #define TARGET_HAVE_TLS true |
| #endif |
| |
| #define TARGET_TLS14 (ia64_tls_size == 14) |
| #define TARGET_TLS22 (ia64_tls_size == 22) |
| #define TARGET_TLS64 (ia64_tls_size == 64) |
| |
| #define TARGET_HPUX 0 |
| #define TARGET_HPUX_LD 0 |
| |
| #define TARGET_ABI_OPEN_VMS 0 |
| |
| #ifndef TARGET_ILP32 |
| #define TARGET_ILP32 0 |
| #endif |
| |
| #ifndef HAVE_AS_LTOFFX_LDXMOV_RELOCS |
| #define HAVE_AS_LTOFFX_LDXMOV_RELOCS 0 |
| #endif |
| |
| /* Values for TARGET_INLINE_FLOAT_DIV, TARGET_INLINE_INT_DIV, and |
| TARGET_INLINE_SQRT. */ |
| |
| enum ia64_inline_type |
| { |
| INL_NO = 0, |
| INL_MIN_LAT = 1, |
| INL_MAX_THR = 2 |
| }; |
| |
| /* 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 |
| |
| /* Driver configuration */ |
| |
| /* A C string constant that tells the GCC driver program options to pass to |
| `cc1'. It can also specify how to translate options you give to GCC into |
| options for GCC to pass to the `cc1'. */ |
| |
| #undef CC1_SPEC |
| #define CC1_SPEC "%{G*}" |
| |
| /* A C string constant that tells the GCC driver program options to pass to |
| `cc1plus'. It can also specify how to translate options you give to GCC |
| into options for GCC 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) |
| |
| #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 a 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) |
| |
| #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)) |
| |
| #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 bit-field (`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 bit-field 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) |
| |
| /* By default, the C++ compiler will use function addresses in the |
| vtable entries. Setting this nonzero 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. |
| |
| For reasons known only to HP, the vtable entries (as opposed to |
| normal function descriptors) are 16 bytes wide in 32-bit mode as |
| well, even though the 3rd and 4th words are unused. */ |
| #define TARGET_VTABLE_USES_DESCRIPTORS (TARGET_ILP32 ? 4 : 2) |
| |
| /* Due to silliness in the HPUX linker, vtable entries must be |
| 8-byte aligned even in 32-bit mode. Rather than create multiple |
| ABIs, force this restriction on everyone else too. */ |
| #define TARGET_VTABLE_ENTRY_ALIGN 64 |
| |
| /* Due to the above, we need extra padding for the data entries below 0 |
| to retain the alignment of the descriptors. */ |
| #define TARGET_VTABLE_DATA_ENTRY_DISTANCE (TARGET_ILP32 ? 2 : 1) |
| |
| /* 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 LONG_LONG_TYPE_SIZE 64 |
| |
| #define FLOAT_TYPE_SIZE 32 |
| |
| #define DOUBLE_TYPE_SIZE 64 |
| |
| /* long double is XFmode normally, and TFmode for HPUX. It should be |
| TFmode for VMS as well but we only support up to DFmode now. */ |
| #define LONG_DOUBLE_TYPE_SIZE \ |
| (TARGET_HPUX ? 128 \ |
| : TARGET_ABI_OPEN_VMS ? 64 \ |
| : 80) |
| |
| |
| #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 334 |
| |
| /* 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 FP_REGNO_P(REGNO) ((REGNO) >= 128 && (REGNO) <= 254 && (REGNO) != 159) |
| #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) |
| |
| #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 329 |
| #define AR_UNAT_REGNUM 330 |
| #define AR_PFS_REGNUM 331 |
| #define AR_LC_REGNUM 332 |
| #define AR_EC_REGNUM 333 |
| |
| #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 CCV UNAT PFS LC EC */ \ |
| 1, 1, 1, 1, 1, 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 accurate, 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. */ \ |
| 0, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 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. */ \ |
| 0, 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, \ |
| 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. */ \ |
| 0, 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 CCV UNAT PFS LC EC */ \ |
| 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)) |
| |
| /* We define CCImode in ia64-modes.def so we need a selector. */ |
| |
| #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 GCC 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, \ |
| AR_CCV_REGNUM, AR_UNAT_REGNUM, AR_PFS_REGNUM, AR_LC_REGNUM, \ |
| AR_EC_REGNUM \ |
| } |
| |
| /* How Values Fit in Registers */ |
| |
| /* Specify the modes required to caller save a given hard regno. |
| We need to ensure floating pt regs are not saved as DImode. */ |
| |
| #define HARD_REGNO_CALLER_SAVE_MODE(REGNO, NREGS, MODE) \ |
| ((FR_REGNO_P (REGNO) && (NREGS) == 1) ? RFmode \ |
| : choose_hard_reg_mode ((REGNO), (NREGS), NULL)) |
| |
| /* 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, |
| FP_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", "FP_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, 0x0600 }, \ |
| /* AR_I_REGS. */ \ |
| { 0x00000000, 0x00000000, 0x00000000, 0x00000000, \ |
| 0x00000000, 0x00000000, 0x00000000, 0x00000000, \ |
| 0x00000000, 0x00000000, 0x3800 }, \ |
| /* 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, 0x0100 }, \ |
| /* FP_REGS. */ \ |
| { 0x00000000, 0x00000000, 0x00000000, 0x00000000, \ |
| 0x7FFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x7FFFFFFF, \ |
| 0x00000000, 0x00000000, 0x0000 }, \ |
| /* 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, 0x01FF }, \ |
| /* GR_AND_FR_REGS. */ \ |
| { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, \ |
| 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, \ |
| 0x00000000, 0x00000000, 0x0100 }, \ |
| /* ALL_REGS. */ \ |
| { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, \ |
| 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, \ |
| 0xFFFFFFFF, 0xFFFFFFFF, 0x3FFF }, \ |
| } |
| |
| /* 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) ? (REGNO) != R_FR (31) \ |
| && (REGNO) != R_FR(127) ? FP_REGS : 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 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) |
| |
| /* 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) |
| |
| /* 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 TARGET_HARD_REGNO_NREGS. */ |
| |
| #define CLASS_MAX_NREGS(CLASS, MODE) \ |
| ((MODE) == BImode && (CLASS) == PR_REGS ? 2 \ |
| : (((CLASS) == FR_REGS || (CLASS) == FP_REGS) && (MODE) == XFmode) ? 1 \ |
| : (((CLASS) == FR_REGS || (CLASS) == FP_REGS) && (MODE) == RFmode) ? 1 \ |
| : (((CLASS) == FR_REGS || (CLASS) == FP_REGS) && (MODE) == XCmode) ? 2 \ |
| : (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) |
| |
| /* 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 to nonzero if the addresses of local variable slots |
| are at negative offsets from the frame pointer. */ |
| #define FRAME_GROWS_DOWNWARD 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) \ |
| ia64_return_addr_rtx (COUNT, FRAME) |
| |
| /* 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 (Pmode, BR_REG (0)) |
| |
| /* 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. */ |
| /* The CFA is past the red zone, not at the entry-point stack |
| pointer. */ |
| #define INCOMING_FRAME_SP_OFFSET STACK_POINTER_OFFSET |
| |
| /* We shorten debug info by using CFA-16 as DW_AT_frame_base. */ |
| #define CFA_FRAME_BASE_OFFSET(FUNDECL) (-INCOMING_FRAME_SP_OFFSET) |
| |
| |
| /* 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) |
| |
| /* Due to the way varargs and argument spilling happens, the argument |
| pointer is not 16-byte aligned like the stack pointer. */ |
| #define INIT_EXPANDERS \ |
| do { \ |
| ia64_init_expanders (); \ |
| if (crtl->emit.regno_pointer_align) \ |
| REGNO_POINTER_ALIGN (ARG_POINTER_REGNUM) = 64; \ |
| } while (0) |
| |
| /* 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 */ |
| |
| /* 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}, \ |
| } |
| |
| /* This macro returns the initial difference between the specified pair |
| of registers. */ |
| #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ |
| ((OFFSET) = ia64_initial_elimination_offset ((FROM), (TO))) |
| |
| /* Passing Function Arguments on the Stack */ |
| |
| /* If defined, the maximum amount of space required for outgoing arguments will |
| be computed and placed into the variable |
| `crtl->outgoing_args_size'. */ |
| |
| #define ACCUMULATE_OUTGOING_ARGS 1 |
| |
| |
| /* 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 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. */ |
| |
| enum ivms_arg_type {I64, FF, FD, FG, FS, FT}; |
| /* VMS floating point formats VAX F, VAX D, VAX G, IEEE S, IEEE T. */ |
| |
| typedef struct ia64_args |
| { |
| int words; /* # words of arguments so far */ |
| int int_regs; /* # GR registers used so far */ |
| int fp_regs; /* # FR registers used so far */ |
| int prototype; /* whether function prototyped */ |
| enum ivms_arg_type atypes[8]; /* which VMS float type or if not float */ |
| } 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, N_NAMED_ARGS) \ |
| do { \ |
| (CUM).words = 0; \ |
| (CUM).int_regs = 0; \ |
| (CUM).fp_regs = 0; \ |
| (CUM).prototype = ((FNTYPE) && prototype_p (FNTYPE)) || (LIBNAME); \ |
| (CUM).atypes[0] = (CUM).atypes[1] = (CUM).atypes[2] = I64; \ |
| (CUM).atypes[3] = (CUM).atypes[4] = (CUM).atypes[5] = I64; \ |
| (CUM).atypes[6] = (CUM).atypes[7] = I64; \ |
| } 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).int_regs = 0; \ |
| (CUM).fp_regs = 0; \ |
| (CUM).prototype = 1; \ |
| (CUM).atypes[0] = (CUM).atypes[1] = (CUM).atypes[2] = I64; \ |
| (CUM).atypes[3] = (CUM).atypes[4] = (CUM).atypes[5] = I64; \ |
| (CUM).atypes[6] = (CUM).atypes[7] = I64; \ |
| } while (0) |
| |
| /* 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) >= AR_ARG_FIRST && (REGNO) < (AR_ARG_FIRST + MAX_ARGUMENT_SLOTS)) \ |
| || ((REGNO) >= FR_ARG_FIRST && (REGNO) < (FR_ARG_FIRST + MAX_ARGUMENT_SLOTS))) |
| |
| |
| /* How Large Values are Returned */ |
| |
| #define DEFAULT_PCC_STRUCT_RETURN 0 |
| |
| |
| /* 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) |
| |
| /* Nonzero for registers used by the exception handling mechanism. */ |
| |
| #define EH_USES(REGNO) ia64_eh_uses (REGNO) |
| |
| /* 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) \ |
| { \ |
| if (TARGET_ILP32) \ |
| fputs ("\tdata8.ua @iplt(", FILE); \ |
| else \ |
| fputs ("\tdata16.ua @iplt(", FILE); \ |
| mark_decl_referenced (DECL); \ |
| assemble_name (FILE, XSTR (XEXP (DECL_RTL (DECL), 0), 0)); \ |
| fputs (")\n", FILE); \ |
| if (TARGET_ILP32) \ |
| fputs ("\tdata8.ua 0\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) \ |
| ia64_output_function_profiler(FILE, LABELNO) |
| |
| /* Neither hpux nor linux use profile counters. */ |
| #define NO_PROFILE_COUNTERS 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) |
| |
| /* 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 |
| |
| /* 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 |
| |
| |
| /* 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 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(speed_p, predictable_p) 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 1 |
| |
| |
| /* 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 IA64_DEFAULT_GVALUE 8 |
| |
| /* 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 1 |
| |
| |
| /* 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. */ |
| |
| #define ASM_APP_ON (TARGET_GNU_AS ? "#APP\n" : "//APP\n") |
| |
| /* A C string constant for text to be output after each `asm' statement or |
| group of consecutive ones. */ |
| |
| #define ASM_APP_OFF (TARGET_GNU_AS ? "#NO_APP\n" : "//NO_APP\n") |
| |
| /* 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) |
| |
| /* Globalizing directive for a label. */ |
| #define GLOBAL_ASM_OP "\t.global " |
| |
| /* 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) |
| |
| /* ??? Not sure if using a ? in the name for Intel as is safe. */ |
| |
| #define ASM_PN_FORMAT (TARGET_GNU_AS ? "%s.%lu" : "%s?%lu") |
| |
| /* 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); \ |
| if (ISDIGIT (*VALUE)) \ |
| ia64_asm_output_label = 1; \ |
| assemble_name (STREAM, VALUE); \ |
| fputc ('\n', STREAM); \ |
| ia64_asm_output_label = 0; \ |
| } while (0) |
| |
| |
| /* Macros Controlling Initialization Routines. */ |
| |
| /* This is handled by 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. */ \ |
| "ap", "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. Application registers. */ \ |
| "sfp", "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) }, \ |
| } |
| |
| /* 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) \ |
| do { \ |
| if (CASE_VECTOR_MODE == SImode) \ |
| fprintf (STREAM, "\tdata4 @pcrel(.L%d)\n", VALUE); \ |
| else \ |
| fprintf (STREAM, "\tdata8 @pcrel(.L%d)\n", VALUE); \ |
| } while (0) |
| |
| /* Jump tables only need 4 or 8 byte alignment. */ |
| |
| #define ADDR_VEC_ALIGN(ADDR_VEC) (CASE_VECTOR_MODE == SImode ? 2 : 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) \ |
| | (TARGET_ILP32 ? DW_EH_PE_udata4 : 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 sysv4.h. */ |
| |
| |
| /* Specific Options for DBX Output. */ |
| |
| /* This is handled by dbxelf.h. */ |
| |
| |
| /* Open ended Hooks for DBX Output. */ |
| |
| /* Likewise. */ |
| |
| |
| /* File names in DBX format. */ |
| |
| /* Likewise. */ |
| |
| |
| /* Macros for Dwarf Output. */ |
| |
| /* Define this macro if GCC should produce dwarf version 2 format debugging |
| output in response to the `-g' option. */ |
| |
| #define DWARF2_DEBUGGING_INFO 1 |
| |
| #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 (*targetm.asm_out.internal_label), except that we |
| add brackets around the label. */ |
| |
| #define ASM_OUTPUT_DEBUG_LABEL(FILE, PREFIX, NUM) \ |
| fprintf (FILE, TARGET_GNU_AS ? "[.%s%d:]\n" : ".%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, OFFSET, SECTION) \ |
| do { \ |
| fputs (integer_asm_op (SIZE, FALSE), FILE); \ |
| fputs ("@secrel(", FILE); \ |
| assemble_name (FILE, LABEL); \ |
| if ((OFFSET) != 0) \ |
| fprintf (FILE, "+" HOST_WIDE_INT_PRINT_DEC, \ |
| (HOST_WIDE_INT) (OFFSET)); \ |
| 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) |
| |
| /* 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. */ |
| |
| /* Flag to mark data that is in the small address area (addressable |
| via "addl", that is, within a 2MByte offset of 0. */ |
| #define SYMBOL_FLAG_SMALL_ADDR (SYMBOL_FLAG_MACH_DEP << 0) |
| #define SYMBOL_REF_SMALL_ADDR_P(X) \ |
| ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_SMALL_ADDR) != 0) |
| |
| /* An alias for a machine mode name. This is the machine mode that elements of |
| a jump-table should have. */ |
| |
| #define CASE_VECTOR_MODE ptr_mode |
| |
| /* 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 1 |
| |
| /* 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 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 STORE_FLAG_VALUE of -1 instead of 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 |
| |
| /* 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 TARGET_UNWIND_TABLES_DEFAULT true |
| |
| #define EH_RETURN_DATA_REGNO(N) ((N) < 4 ? (N) + 15 : INVALID_REGNUM) |
| |
| /* This function contains machine specific function data. */ |
| struct GTY(()) machine_function |
| { |
| /* The new stack pointer when unwinding from EH. */ |
| rtx ia64_eh_epilogue_sp; |
| |
| /* The new bsp value when unwinding from EH. */ |
| rtx ia64_eh_epilogue_bsp; |
| |
| /* The GP value save register. */ |
| rtx ia64_gp_save; |
| |
| /* The number of varargs registers to save. */ |
| int n_varargs; |
| |
| /* The number of the next unwind state to copy. */ |
| int state_num; |
| }; |
| |
| #define DONT_USE_BUILTIN_SETJMP |
| |
| /* Output any profiling code before the prologue. */ |
| |
| #undef PROFILE_BEFORE_PROLOGUE |
| #define PROFILE_BEFORE_PROLOGUE 1 |
| |
| /* Initialize library function table. */ |
| #undef TARGET_INIT_LIBFUNCS |
| #define TARGET_INIT_LIBFUNCS ia64_init_libfuncs |
| |
| |
| /* Switch on code for querying unit reservations. */ |
| #define CPU_UNITS_QUERY 1 |
| |
| /* End of ia64.h */ |