| /* Definitions of target machine for GNU compiler. NEC V850 series |
| Copyright (C) 1996-2022 Free Software Foundation, Inc. |
| Contributed by Jeff Law (law@cygnus.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. |
| |
| Under Section 7 of GPL version 3, you are granted additional |
| permissions described in the GCC Runtime Library Exception, version |
| 3.1, as published by the Free Software Foundation. |
| |
| You should have received a copy of the GNU General Public License and |
| a copy of the GCC Runtime Library Exception along with this program; |
| see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef GCC_V850_H |
| #define GCC_V850_H |
| |
| #undef LIB_SPEC |
| #define LIB_SPEC "%{!shared:%{!symbolic:--start-group -lc -lgcc --end-group}}" |
| |
| #undef ENDFILE_SPEC |
| #undef LINK_SPEC |
| #undef STARTFILE_SPEC |
| #undef ASM_SPEC |
| |
| #define TARGET_CPU_generic 1 |
| #define TARGET_CPU_v850e 2 |
| #define TARGET_CPU_v850e1 3 |
| #define TARGET_CPU_v850e2 4 |
| #define TARGET_CPU_v850e2v3 5 |
| #define TARGET_CPU_v850e3v5 6 |
| |
| #ifndef TARGET_CPU_DEFAULT |
| #define TARGET_CPU_DEFAULT TARGET_CPU_generic |
| #endif |
| |
| #define MASK_DEFAULT MASK_V850 |
| #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850}" |
| #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850__}" |
| |
| /* Choose which processor will be the default. |
| We must pass a -mv850xx option to the assembler if no explicit -mv* option |
| is given, because the assembler's processor default may not be correct. */ |
| #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e |
| #undef MASK_DEFAULT |
| #define MASK_DEFAULT MASK_V850E |
| #undef SUBTARGET_ASM_SPEC |
| #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e}" |
| #undef SUBTARGET_CPP_SPEC |
| #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e__}" |
| #endif |
| |
| #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e1 |
| #undef MASK_DEFAULT |
| #define MASK_DEFAULT MASK_V850E /* No practical difference. */ |
| #undef SUBTARGET_ASM_SPEC |
| #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e1}" |
| #undef SUBTARGET_CPP_SPEC |
| #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e1__} %{mv850e1:-D__v850e1__}" |
| #endif |
| |
| #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e2 |
| #undef MASK_DEFAULT |
| #define MASK_DEFAULT MASK_V850E2 |
| #undef SUBTARGET_ASM_SPEC |
| #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e2}" |
| #undef SUBTARGET_CPP_SPEC |
| #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e2__} %{mv850e2:-D__v850e2__}" |
| #endif |
| |
| #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e2v3 |
| #undef MASK_DEFAULT |
| #define MASK_DEFAULT MASK_V850E2V3 |
| #undef SUBTARGET_ASM_SPEC |
| #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e2v3}" |
| #undef SUBTARGET_CPP_SPEC |
| #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e2v3__} %{mv850e2v3:-D__v850e2v3__}" |
| #endif |
| |
| #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e3v5 |
| #undef MASK_DEFAULT |
| #define MASK_DEFAULT MASK_V850E3V5 |
| #undef SUBTARGET_ASM_SPEC |
| #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e3v5}" |
| #undef SUBTARGET_CPP_SPEC |
| #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e3v5__} %{mv850e3v5:-D__v850e3v5__}" |
| #undef TARGET_VERSION |
| #define TARGET_VERSION fprintf (stderr, " (Renesas V850E3V5)"); |
| #endif |
| |
| #define TARGET_V850E3V5_UP ((TARGET_V850E3V5)) |
| #define TARGET_V850E2V3_UP ((TARGET_V850E2V3) || TARGET_V850E3V5_UP) |
| #define TARGET_V850E2_UP ((TARGET_V850E2) || TARGET_V850E2V3_UP) |
| #define TARGET_V850E_UP ((TARGET_V850E) || TARGET_V850E2_UP) |
| #define TARGET_ALL ((TARGET_V850) || TARGET_V850E_UP) |
| |
| #define ASM_SPEC "%{m850es:-mv850e1}%{!mv850es:%{mv*:-mv%*}} \ |
| %{mrelax:-mrelax} \ |
| %{m8byte-align:-m8byte-align} \ |
| %{msoft-float:-msoft-float} \ |
| %{mhard-float:-mhard-float} \ |
| %{mgcc-abi:-mgcc-abi}" |
| |
| #define LINK_SPEC "%{mgcc-abi:-m v850}" |
| |
| #define CPP_SPEC "\ |
| %{mv850e3v5:-D__v850e3v5__} \ |
| %{mv850e2v3:-D__v850e2v3__} \ |
| %{mv850e2:-D__v850e2__} \ |
| %{mv850es:-D__v850e1__} \ |
| %{mv850e1:-D__v850e1__} \ |
| %{mv850e:-D__v850e__} \ |
| %{mv850:-D__v850__} \ |
| %(subtarget_cpp_spec) \ |
| %{mep:-D__EP__}" |
| |
| #define EXTRA_SPECS \ |
| { "subtarget_asm_spec", SUBTARGET_ASM_SPEC }, \ |
| { "subtarget_cpp_spec", SUBTARGET_CPP_SPEC } |
| |
| |
| /* Macro to decide when FPU instructions can be used. */ |
| #define TARGET_USE_FPU (TARGET_V850E2V3_UP && ! TARGET_SOFT_FLOAT) |
| |
| #define TARGET_CPU_CPP_BUILTINS() \ |
| do \ |
| { \ |
| builtin_define( "__v851__" ); \ |
| builtin_define( "__v850" ); \ |
| builtin_define( "__v850__" ); \ |
| builtin_assert( "machine=v850" ); \ |
| builtin_assert( "cpu=v850" ); \ |
| if (TARGET_EP) \ |
| builtin_define ("__EP__"); \ |
| if (TARGET_GCC_ABI) \ |
| builtin_define ("__V850_GCC_ABI__"); \ |
| else \ |
| builtin_define ("__V850_RH850_ABI__"); \ |
| if (! TARGET_DISABLE_CALLT) \ |
| builtin_define ("__V850_CALLT__"); \ |
| if (TARGET_8BYTE_ALIGN) \ |
| builtin_define ("__V850_8BYTE_ALIGN__");\ |
| builtin_define (TARGET_USE_FPU ? \ |
| "__FPU_OK__" : "__NO_FPU__");\ |
| } \ |
| while(0) |
| |
| #define MASK_CPU (MASK_V850 | MASK_V850E | MASK_V850E1 | MASK_V850E2 | MASK_V850E2V3 | MASK_V850E3V5) |
| |
| /* Target machine storage layout */ |
| |
| /* Define this if most significant bit is lowest numbered |
| in instructions that operate on numbered bit-fields. |
| This is not true on the NEC V850. */ |
| #define BITS_BIG_ENDIAN 0 |
| |
| /* Define this if most significant byte of a word is the lowest numbered. */ |
| /* This is not true on the NEC V850. */ |
| #define BYTES_BIG_ENDIAN 0 |
| |
| /* Define this if most significant word of a multiword number is lowest |
| numbered. |
| This is not true on the NEC V850. */ |
| #define WORDS_BIG_ENDIAN 0 |
| |
| /* Width of a word, in units (bytes). */ |
| #define UNITS_PER_WORD 4 |
| |
| /* Define this macro if it is advisable to hold scalars in registers |
| in a wider mode than that declared by the program. In such cases, |
| the value is constrained to be within the bounds of the declared |
| type, but kept valid in the wider mode. The signedness of the |
| extension may differ from that of the type. |
| |
| Some simple experiments have shown that leaving UNSIGNEDP alone |
| generates the best overall code. */ |
| |
| #define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \ |
| if (GET_MODE_CLASS (MODE) == MODE_INT \ |
| && GET_MODE_SIZE (MODE) < 4) \ |
| { (MODE) = SImode; } |
| |
| /* Allocation boundary (in *bits*) for storing arguments in argument list. */ |
| #define PARM_BOUNDARY 32 |
| |
| /* The stack goes in 32-bit lumps. */ |
| #define STACK_BOUNDARY BIGGEST_ALIGNMENT |
| |
| /* Allocation boundary (in *bits*) for the code of a function. |
| 16 is the minimum boundary; 32 would give better performance. */ |
| #define FUNCTION_BOUNDARY (((! TARGET_GCC_ABI) || optimize_size) ? 16 : 32) |
| |
| /* No data type wants to be aligned rounder than this. */ |
| #define BIGGEST_ALIGNMENT (TARGET_8BYTE_ALIGN ? 64 : 32) |
| |
| /* Alignment of field after `int : 0' in a structure. */ |
| #define EMPTY_FIELD_BOUNDARY 32 |
| |
| /* No structure field wants to be aligned rounder than this. */ |
| #define BIGGEST_FIELD_ALIGNMENT BIGGEST_ALIGNMENT |
| |
| /* Define this if move instructions will actually fail to work |
| when given unaligned data. */ |
| #define STRICT_ALIGNMENT (!TARGET_NO_STRICT_ALIGN) |
| |
| /* Define this as 1 if `char' should by default be signed; else as 0. |
| |
| On the NEC V850, loads do sign extension, so make this default. */ |
| #define DEFAULT_SIGNED_CHAR 1 |
| |
| #undef SIZE_TYPE |
| #define SIZE_TYPE "unsigned int" |
| |
| #undef PTRDIFF_TYPE |
| #define PTRDIFF_TYPE "int" |
| |
| #undef WCHAR_TYPE |
| #define WCHAR_TYPE "long int" |
| |
| #undef WCHAR_TYPE_SIZE |
| #define WCHAR_TYPE_SIZE BITS_PER_WORD |
| |
| /* Standard register usage. */ |
| |
| /* Number of actual hardware registers. |
| The hardware registers are assigned numbers for the compiler |
| from 0 to just below FIRST_PSEUDO_REGISTER. |
| |
| All registers that the compiler knows about must be given numbers, |
| even those that are not normally considered general registers. */ |
| |
| #define FIRST_PSEUDO_REGISTER 36 |
| |
| /* 1 for registers that have pervasive standard uses |
| and are not available for the register allocator. */ |
| |
| #define FIXED_REGISTERS \ |
| { 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, 1, 0, \ |
| 1, 1, \ |
| 1, 1} |
| |
| /* 1 for registers not available across function calls. |
| These must include the FIXED_REGISTERS and also any |
| registers that can be used without being saved. |
| The latter must include the registers where values are returned |
| and the register where structure-value addresses are passed. |
| Aside from that, you can include as many other registers as you |
| like. */ |
| |
| #define CALL_USED_REGISTERS \ |
| { 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, 1, 1, \ |
| 1, 1, \ |
| 1, 1} |
| |
| /* List the order in which to allocate registers. Each register must be |
| listed once, even those in FIXED_REGISTERS. |
| |
| On the 850, we make the return registers first, then all of the volatile |
| registers, then the saved registers in reverse order to better save the |
| registers with an out of line function, and finally the fixed |
| registers. */ |
| |
| #define REG_ALLOC_ORDER \ |
| { \ |
| 10, 11, /* return registers */ \ |
| 12, 13, 14, 15, 16, 17, 18, 19, /* scratch registers */ \ |
| 6, 7, 8, 9, 31, /* argument registers */ \ |
| 29, 28, 27, 26, 25, 24, 23, 22, /* saved registers */ \ |
| 21, 20, 2, \ |
| 0, 1, 3, 4, 5, 30, 32, 33, /* fixed registers */ \ |
| 34, 35 \ |
| } |
| |
| |
| /* Define the classes of registers for register constraints in the |
| machine description. Also define ranges of constants. |
| |
| One of the classes must always be named ALL_REGS and include all hard regs. |
| If there is more than one class, another class must be named NO_REGS |
| and contain no registers. |
| |
| The name GENERAL_REGS must be the name of a class (or an alias for |
| another name such as ALL_REGS). This is the class of registers |
| that is allowed by "g" or "r" in a register constraint. |
| Also, registers outside this class are allocated only when |
| instructions express preferences for them. |
| |
| The classes must be numbered in nondecreasing order; that is, |
| a larger-numbered class must never be contained completely |
| in a smaller-numbered class. |
| |
| For any two classes, it is very desirable that there be another |
| class that represents their union. */ |
| |
| enum reg_class |
| { |
| NO_REGS, EVEN_REGS, GENERAL_REGS, ALL_REGS, LIM_REG_CLASSES |
| }; |
| |
| #define N_REG_CLASSES (int) LIM_REG_CLASSES |
| |
| /* Give names of register classes as strings for dump file. */ |
| |
| #define REG_CLASS_NAMES \ |
| { "NO_REGS", "EVEN_REGS", "GENERAL_REGS", "ALL_REGS", "LIM_REGS" } |
| |
| /* Define which registers fit in which classes. |
| This is an initializer for a vector of HARD_REG_SET |
| of length N_REG_CLASSES. */ |
| |
| #define REG_CLASS_CONTENTS \ |
| { \ |
| { 0x00000000,0x0 }, /* NO_REGS */ \ |
| { 0x55555554,0x0 }, /* EVEN_REGS */ \ |
| { 0xfffffffe,0x0 }, /* GENERAL_REGS */ \ |
| { 0xffffffff,0x0 }, /* ALL_REGS */ \ |
| } |
| |
| /* The same information, inverted: |
| Return the class number of the smallest class containing |
| reg number REGNO. This could be a conditional expression |
| or could index an array. */ |
| |
| #define REGNO_REG_CLASS(REGNO) ((REGNO == CC_REGNUM || REGNO == FCC_REGNUM) ? NO_REGS : GENERAL_REGS) |
| |
| /* The class value for index registers, and the one for base regs. */ |
| |
| #define INDEX_REG_CLASS NO_REGS |
| #define BASE_REG_CLASS GENERAL_REGS |
| |
| /* Macros to check register numbers against specific register classes. */ |
| |
| /* These assume that REGNO is a hard or pseudo reg number. |
| They give nonzero only if REGNO is a hard reg of the suitable class |
| or a pseudo reg currently allocated to a suitable hard reg. |
| Since they use reg_renumber, they are safe only once reg_renumber |
| has been allocated, which happens in reginfo.cc during register |
| allocation. */ |
| |
| #define REGNO_OK_FOR_BASE_P(regno) \ |
| (((regno) < FIRST_PSEUDO_REGISTER \ |
| && (regno) != CC_REGNUM \ |
| && (regno) != FCC_REGNUM) \ |
| || reg_renumber[regno] >= 0) |
| |
| #define REGNO_OK_FOR_INDEX_P(regno) 0 |
| |
| /* Convenience wrappers around insn_const_int_ok_for_constraint. */ |
| |
| #define CONST_OK_FOR_I(VALUE) \ |
| insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_I) |
| #define CONST_OK_FOR_J(VALUE) \ |
| insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_J) |
| #define CONST_OK_FOR_K(VALUE) \ |
| insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_K) |
| #define CONST_OK_FOR_L(VALUE) \ |
| insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_L) |
| #define CONST_OK_FOR_M(VALUE) \ |
| insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_M) |
| #define CONST_OK_FOR_N(VALUE) \ |
| insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_N) |
| #define CONST_OK_FOR_O(VALUE) \ |
| insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_O) |
| #define CONST_OK_FOR_W(VALUE) \ |
| insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_W) |
| |
| /* Stack layout; function entry, exit and calling. */ |
| |
| /* Define this if pushing a word on the stack |
| makes the stack pointer a smaller address. */ |
| |
| #define STACK_GROWS_DOWNWARD 1 |
| |
| /* Define this to nonzero if the nominal address of the stack frame |
| is at the high-address end of the local variables; |
| that is, each additional local variable allocated |
| goes at a more negative offset in the frame. */ |
| |
| #define FRAME_GROWS_DOWNWARD 1 |
| |
| /* Offset of first parameter from the argument pointer register value. */ |
| /* Is equal to the size of the saved fp + pc, even if an fp isn't |
| saved since the value is used before we know. */ |
| |
| #define FIRST_PARM_OFFSET(FNDECL) 0 |
| |
| /* Specify the registers used for certain standard purposes. |
| The values of these macros are register numbers. */ |
| |
| /* Register to use for pushing function arguments. */ |
| #define STACK_POINTER_REGNUM SP_REGNUM |
| |
| /* Base register for access to local variables of the function. */ |
| #define FRAME_POINTER_REGNUM 34 |
| |
| /* Register containing return address from latest function call. */ |
| #define LINK_POINTER_REGNUM LP_REGNUM |
| |
| /* On some machines the offset between the frame pointer and starting |
| offset of the automatic variables is not known until after register |
| allocation has been done (for example, because the saved registers |
| are between these two locations). On those machines, define |
| `FRAME_POINTER_REGNUM' the number of a special, fixed register to |
| be used internally until the offset is known, and define |
| `HARD_FRAME_POINTER_REGNUM' to be actual the hard register number |
| used for the frame pointer. |
| |
| You should define this macro only in the very rare circumstances |
| when it is not possible to calculate the offset between the frame |
| pointer and the automatic variables until after register |
| allocation has been completed. When this macro is defined, you |
| must also indicate in your definition of `ELIMINABLE_REGS' how to |
| eliminate `FRAME_POINTER_REGNUM' into either |
| `HARD_FRAME_POINTER_REGNUM' or `STACK_POINTER_REGNUM'. |
| |
| Do not define this macro if it would be the same as |
| `FRAME_POINTER_REGNUM'. */ |
| #undef HARD_FRAME_POINTER_REGNUM |
| #define HARD_FRAME_POINTER_REGNUM 29 |
| |
| /* Base register for access to arguments of the function. */ |
| #define ARG_POINTER_REGNUM 35 |
| |
| /* Register in which static-chain is passed to a function. |
| This must be a call used register. */ |
| #define STATIC_CHAIN_REGNUM 19 |
| |
| /* If defined, this macro specifies a table of register pairs used to |
| eliminate unneeded registers that point into the stack frame. If |
| it is not defined, the only elimination attempted by the compiler |
| is to replace references to the frame pointer with references to |
| the stack pointer. |
| |
| The definition of this macro is a list of structure |
| initializations, each of which specifies an original and |
| replacement register. |
| |
| On some machines, the position of the argument pointer is not |
| known until the compilation is completed. In such a case, a |
| separate hard register must be used for the argument pointer. |
| This register can be eliminated by replacing it with either the |
| frame pointer or the argument pointer, depending on whether or not |
| the frame pointer has been eliminated. |
| |
| In this case, you might specify: |
| #define ELIMINABLE_REGS \ |
| {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ |
| {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ |
| {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} |
| |
| Note that the elimination of the argument pointer with the stack |
| pointer is specified first since that is the preferred elimination. */ |
| |
| #define ELIMINABLE_REGS \ |
| {{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM }, \ |
| { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM }, \ |
| { ARG_POINTER_REGNUM, STACK_POINTER_REGNUM }, \ |
| { ARG_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) \ |
| { \ |
| if ((FROM) == FRAME_POINTER_REGNUM) \ |
| (OFFSET) = get_frame_size () + crtl->outgoing_args_size; \ |
| else if ((FROM) == ARG_POINTER_REGNUM) \ |
| (OFFSET) = compute_frame_size (get_frame_size (), (long *)0); \ |
| else \ |
| gcc_unreachable (); \ |
| } |
| |
| /* Keep the stack pointer constant throughout the function. */ |
| #define ACCUMULATE_OUTGOING_ARGS 1 |
| |
| #define RETURN_ADDR_RTX(COUNT, FP) v850_return_addr (COUNT) |
| |
| /* Define a data type for recording info about an argument list |
| during the scan of that argument list. This data type should |
| hold all necessary information about the function itself |
| and about the args processed so far, enough to enable macros |
| such as FUNCTION_ARG to determine where the next arg should go. */ |
| |
| #define CUMULATIVE_ARGS struct cum_arg |
| struct cum_arg { int nbytes; }; |
| |
| /* Initialize a variable CUM of type CUMULATIVE_ARGS |
| for a call to a function whose data type is FNTYPE. |
| For a library call, FNTYPE is 0. */ |
| |
| #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \ |
| do { (CUM).nbytes = 0; } while (0) |
| |
| /* When a parameter is passed in a register, stack space is still |
| allocated for it. */ |
| #define REG_PARM_STACK_SPACE(DECL) 0 |
| |
| /* 1 if N is a possible register number for function argument passing. */ |
| |
| #define FUNCTION_ARG_REGNO_P(N) (N >= 6 && N <= 9) |
| |
| #define DEFAULT_PCC_STRUCT_RETURN 0 |
| |
| /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, |
| the stack pointer does not matter. The value is tested only in |
| functions that have frame pointers. |
| No definition is equivalent to always zero. */ |
| |
| #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) \ |
| (reload_completed && (REGNO) == LINK_POINTER_REGNUM) |
| |
| /* Output assembler code to FILE to increment profiler label # LABELNO |
| for profiling a function entry. */ |
| |
| #define FUNCTION_PROFILER(FILE, LABELNO) ; |
| |
| /* Length in units of the trampoline for entering a nested function. */ |
| |
| #define TRAMPOLINE_SIZE 24 |
| |
| /* Addressing modes, and classification of registers for them. */ |
| |
| |
| /* 1 if X is an rtx for a constant that is a valid address. */ |
| |
| /* ??? This seems too exclusive. May get better code by accepting more |
| possibilities here, in particular, should accept ZDA_NAME SYMBOL_REFs. */ |
| |
| #define CONSTANT_ADDRESS_P(X) constraint_satisfied_p (X, CONSTRAINT_K) |
| |
| /* Maximum number of registers that can appear in a valid memory address. */ |
| |
| #define MAX_REGS_PER_ADDRESS 1 |
| |
| /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE, |
| return the mode to be used for the comparison. |
| |
| For floating-point equality comparisons, CCFPEQmode should be used. |
| VOIDmode should be used in all other cases. |
| |
| For integer comparisons against zero, reduce to CCNOmode or CCZmode if |
| possible, to allow for more combinations. */ |
| |
| #define SELECT_CC_MODE(OP, X, Y) v850_select_cc_mode (OP, X, Y) |
| |
| /* Nonzero if access to memory by bytes or half words is no faster |
| than accessing full words. */ |
| #define SLOW_BYTE_ACCESS 1 |
| |
| /* According expr.cc, a value of around 6 should minimize code size, and |
| for the V850 series, that's our primary concern. */ |
| #define MOVE_RATIO(speed) 6 |
| |
| /* Indirect calls are expensive, never turn a direct call |
| into an indirect call. */ |
| #define NO_FUNCTION_CSE 1 |
| |
| /* The four different data regions on the v850. */ |
| typedef enum |
| { |
| DATA_AREA_NORMAL, |
| DATA_AREA_SDA, |
| DATA_AREA_TDA, |
| DATA_AREA_ZDA |
| } v850_data_area; |
| |
| #define TEXT_SECTION_ASM_OP "\t.section .text" |
| #define DATA_SECTION_ASM_OP "\t.section .data" |
| #define BSS_SECTION_ASM_OP "\t.section .bss" |
| #define SDATA_SECTION_ASM_OP "\t.section .sdata,\"aw\"" |
| #define SBSS_SECTION_ASM_OP "\t.section .sbss,\"aw\"" |
| |
| #define SCOMMON_ASM_OP "\t.scomm\t" |
| #define ZCOMMON_ASM_OP "\t.zcomm\t" |
| #define TCOMMON_ASM_OP "\t.tcomm\t" |
| |
| #define ASM_COMMENT_START "#" |
| |
| /* Output to assembler file text saying following lines |
| may contain character constants, extra white space, comments, etc. */ |
| |
| #define ASM_APP_ON "#APP\n" |
| |
| /* Output to assembler file text saying following lines |
| no longer contain unusual constructs. */ |
| |
| #define ASM_APP_OFF "#NO_APP\n" |
| |
| #undef USER_LABEL_PREFIX |
| #define USER_LABEL_PREFIX "_" |
| |
| /* This says how to output the assembler to define a global |
| uninitialized but not common symbol. */ |
| |
| #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ |
| asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN)) |
| |
| #undef ASM_OUTPUT_ALIGNED_BSS |
| #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ |
| v850_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) |
| |
| /* This says how to output the assembler to define a global |
| uninitialized, common symbol. */ |
| #undef ASM_OUTPUT_ALIGNED_COMMON |
| #undef ASM_OUTPUT_COMMON |
| #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \ |
| v850_output_common (FILE, DECL, NAME, SIZE, ALIGN) |
| |
| /* This says how to output the assembler to define a local |
| uninitialized symbol. */ |
| #undef ASM_OUTPUT_ALIGNED_LOCAL |
| #undef ASM_OUTPUT_LOCAL |
| #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \ |
| v850_output_local (FILE, DECL, NAME, SIZE, ALIGN) |
| |
| /* Globalizing directive for a label. */ |
| #define GLOBAL_ASM_OP "\t.global " |
| |
| #define ASM_PN_FORMAT "%s___%lu" |
| |
| /* This is how we tell the assembler that two symbols have the same value. */ |
| |
| #define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \ |
| do { assemble_name(FILE, NAME1); \ |
| fputs(" = ", FILE); \ |
| assemble_name(FILE, NAME2); \ |
| fputc('\n', FILE); } while (0) |
| |
| |
| /* How to refer to registers in assembler output. |
| This sequence is indexed by compiler's hard-register-number (see above). */ |
| |
| #define REGISTER_NAMES \ |
| { "r0", "r1", "r2", "sp", "gp", "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", "ep", "r31", \ |
| "psw", "fcc", \ |
| ".fp", ".ap"} |
| |
| /* Register numbers */ |
| |
| #define ADDITIONAL_REGISTER_NAMES \ |
| { { "zero", ZERO_REGNUM }, \ |
| { "hp", 2 }, \ |
| { "r3", 3 }, \ |
| { "r4", 4 }, \ |
| { "tp", 5 }, \ |
| { "fp", 29 }, \ |
| { "r30", 30 }, \ |
| { "lp", LP_REGNUM} } |
| |
| /* This is how to output an element of a case-vector that is absolute. */ |
| |
| #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ |
| fprintf (FILE, "\t%s .L%d\n", \ |
| (TARGET_BIG_SWITCH ? ".long" : ".short"), VALUE) |
| |
| /* This is how to output an element of a case-vector that is relative. */ |
| |
| /* Disable the shift, which is for the currently disabled "switch" |
| opcode. Se casesi in v850.md. */ |
| |
| #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ |
| fprintf (FILE, "\t%s %s.L%d-.L%d%s\n", \ |
| (TARGET_BIG_SWITCH ? ".long" : ".short"), \ |
| (0 && ! TARGET_BIG_SWITCH && (TARGET_V850E_UP) ? "(" : ""), \ |
| VALUE, REL, \ |
| (0 && ! TARGET_BIG_SWITCH && (TARGET_V850E_UP) ? ")>>1" : "")) |
| |
| #define ASM_OUTPUT_ALIGN(FILE, LOG) \ |
| if ((LOG) != 0) \ |
| fprintf (FILE, "\t.align %d\n", (LOG)) |
| |
| /* Use dwarf2 debugging info by default. */ |
| #undef PREFERRED_DEBUGGING_TYPE |
| #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG |
| #define DWARF2_DEBUGGING_INFO 1 |
| |
| #define DWARF2_FRAME_INFO 1 |
| #define DWARF2_UNWIND_INFO 0 |
| #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (Pmode, LINK_POINTER_REGNUM) |
| #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (LINK_POINTER_REGNUM) |
| |
| #ifndef ASM_GENERATE_INTERNAL_LABEL |
| #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM) \ |
| sprintf (STRING, "*.%s%u", PREFIX, (unsigned int)(NUM)) |
| #endif |
| |
| /* Specify the machine mode that this machine uses |
| for the index in the tablejump instruction. */ |
| #define CASE_VECTOR_MODE (TARGET_BIG_SWITCH ? SImode : HImode) |
| |
| /* Define as C expression which evaluates to nonzero if the tablejump |
| instruction expects the table to contain offsets from the address of the |
| table. |
| Do not define this if the table should contain absolute addresses. */ |
| #define CASE_VECTOR_PC_RELATIVE 1 |
| |
| /* The switch instruction requires that the jump table immediately follow |
| it. */ |
| #define JUMP_TABLES_IN_TEXT_SECTION (!TARGET_JUMP_TABLES_IN_DATA_SECTION) |
| |
| #undef ASM_OUTPUT_BEFORE_CASE_LABEL |
| #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \ |
| ASM_OUTPUT_ALIGN ((FILE), (TARGET_BIG_SWITCH ? 2 : 1)) |
| |
| #define WORD_REGISTER_OPERATIONS 1 |
| |
| /* Byte and short loads sign extend the value to a word. */ |
| #define LOAD_EXTEND_OP(MODE) SIGN_EXTEND |
| |
| /* Max number of bytes we can move from memory to memory |
| in one reasonably fast instruction. */ |
| #define MOVE_MAX 4 |
| |
| /* Define if shifts truncate the shift count |
| which implies one can omit a sign-extension or zero-extension |
| of a shift count. */ |
| #define SHIFT_COUNT_TRUNCATED 1 |
| |
| /* Specify the machine mode that pointers have. |
| After generation of rtl, the compiler makes no further distinction |
| between pointers and any other objects of this machine mode. */ |
| #define Pmode SImode |
| |
| /* A function address in a call instruction |
| is a byte address (for indexing purposes) |
| so give the MEM rtx a byte's mode. */ |
| #define FUNCTION_MODE QImode |
| |
| /* Tell compiler we want to support GHS pragmas */ |
| #define REGISTER_TARGET_PRAGMAS() do { \ |
| c_register_pragma ("ghs", "interrupt", ghs_pragma_interrupt); \ |
| c_register_pragma ("ghs", "section", ghs_pragma_section); \ |
| c_register_pragma ("ghs", "starttda", ghs_pragma_starttda); \ |
| c_register_pragma ("ghs", "startsda", ghs_pragma_startsda); \ |
| c_register_pragma ("ghs", "startzda", ghs_pragma_startzda); \ |
| c_register_pragma ("ghs", "endtda", ghs_pragma_endtda); \ |
| c_register_pragma ("ghs", "endsda", ghs_pragma_endsda); \ |
| c_register_pragma ("ghs", "endzda", ghs_pragma_endzda); \ |
| } while (0) |
| |
| /* enum GHS_SECTION_KIND is an enumeration of the kinds of sections that |
| can appear in the "ghs section" pragma. These names are used to index |
| into the GHS_default_section_names[] and GHS_current_section_names[] |
| that are defined in v850.cc, and so the ordering of each must remain |
| consistent. |
| |
| These arrays give the default and current names for each kind of |
| section defined by the GHS pragmas. The current names can be changed |
| by the "ghs section" pragma. If the current names are null, use |
| the default names. Note that the two arrays have different types. |
| |
| For the *normal* section kinds (like .data, .text, etc.) we do not |
| want to explicitly force the name of these sections, but would rather |
| let the linker (or at least the back end) choose the name of the |
| section, UNLESS the user has forced a specific name for these section |
| kinds. To accomplish this set the name in ghs_default_section_names |
| to null. */ |
| |
| enum GHS_section_kind |
| { |
| GHS_SECTION_KIND_DEFAULT, |
| |
| GHS_SECTION_KIND_TEXT, |
| GHS_SECTION_KIND_DATA, |
| GHS_SECTION_KIND_RODATA, |
| GHS_SECTION_KIND_BSS, |
| GHS_SECTION_KIND_SDATA, |
| GHS_SECTION_KIND_ROSDATA, |
| GHS_SECTION_KIND_TDATA, |
| GHS_SECTION_KIND_ZDATA, |
| GHS_SECTION_KIND_ROZDATA, |
| |
| COUNT_OF_GHS_SECTION_KINDS /* must be last */ |
| }; |
| |
| /* The following code is for handling pragmas supported by the |
| v850 compiler produced by Green Hills Software. This is at |
| the specific request of a customer. */ |
| |
| typedef struct data_area_stack_element |
| { |
| struct data_area_stack_element * prev; |
| v850_data_area data_area; /* Current default data area. */ |
| } data_area_stack_element; |
| |
| /* Track the current data area set by the |
| data area pragma (which can be nested). */ |
| extern data_area_stack_element * data_area_stack; |
| |
| /* Names of the various data areas used on the v850. */ |
| extern const char * GHS_default_section_names [(int) COUNT_OF_GHS_SECTION_KINDS]; |
| extern const char * GHS_current_section_names [(int) COUNT_OF_GHS_SECTION_KINDS]; |
| |
| /* The assembler op to start the file. */ |
| |
| #define FILE_ASM_OP "\t.file\n" |
| |
| /* Implement ZDA, TDA, and SDA */ |
| |
| #define EP_REGNUM 30 /* ep register number */ |
| |
| #define SYMBOL_FLAG_ZDA (SYMBOL_FLAG_MACH_DEP << 0) |
| #define SYMBOL_FLAG_TDA (SYMBOL_FLAG_MACH_DEP << 1) |
| #define SYMBOL_FLAG_SDA (SYMBOL_FLAG_MACH_DEP << 2) |
| #define SYMBOL_REF_ZDA_P(X) ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_ZDA) != 0) |
| #define SYMBOL_REF_TDA_P(X) ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_TDA) != 0) |
| #define SYMBOL_REF_SDA_P(X) ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_SDA) != 0) |
| |
| #define TARGET_ASM_INIT_SECTIONS v850_asm_init_sections |
| |
| #define ADJUST_INSN_LENGTH(INSN, LENGTH) \ |
| ((LENGTH) = v850_adjust_insn_length ((INSN), (LENGTH))) |
| |
| #endif /* ! GCC_V850_H */ |