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Diffstat (limited to 'gcc-4.9/gcc/config/microblaze/microblaze.h')
| -rw-r--r-- | gcc-4.9/gcc/config/microblaze/microblaze.h | 937 |
1 files changed, 937 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/config/microblaze/microblaze.h b/gcc-4.9/gcc/config/microblaze/microblaze.h new file mode 100644 index 000000000..58d8895a3 --- /dev/null +++ b/gcc-4.9/gcc/config/microblaze/microblaze.h @@ -0,0 +1,937 @@ +/* Definitions of target machine for GNU compiler for Xilinx MicroBlaze. + Copyright (C) 2009-2014 Free Software Foundation, Inc. + + Contributed by Michael Eager <eager@eagercon.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/>. */ + +/* Standard GCC variables that we reference. */ + +/* MicroBlaze external variables defined in microblaze.c. */ + +/* Which pipeline to schedule for. */ +enum pipeline_type +{ + MICROBLAZE_PIPE_3 = 0, + MICROBLAZE_PIPE_5 = 1 +}; + +#define MICROBLAZE_MASK_NO_UNSAFE_DELAY 0x00000001 + +/* print_operand punctuation chars */ +extern char microblaze_print_operand_punct[]; + +/* # bytes of data/sdata cutoff */ +extern int microblaze_section_threshold; + +/* Map register # to debug register # */ +extern int microblaze_dbx_regno[]; + +extern int microblaze_no_unsafe_delay; +extern int microblaze_has_clz; +extern enum pipeline_type microblaze_pipe; + +#define OBJECT_FORMAT_ELF + +#if TARGET_BIG_ENDIAN_DEFAULT +#define TARGET_ENDIAN_DEFAULT 0 +#define TARGET_ENDIAN_OPTION "mbig-endian" +#else +#define TARGET_ENDIAN_DEFAULT MASK_LITTLE_ENDIAN +#define TARGET_ENDIAN_OPTION "mlittle-endian" +#endif + +/* Default target_flags if no switches are specified */ +#define TARGET_DEFAULT (MASK_SOFT_MUL | MASK_SOFT_DIV | MASK_SOFT_FLOAT \ + | TARGET_ENDIAN_DEFAULT) + +/* Do we have CLZ? */ +#define TARGET_HAS_CLZ (TARGET_PATTERN_COMPARE && microblaze_has_clz) + +/* The default is to support PIC. */ +#define TARGET_SUPPORTS_PIC 1 + +/* The default is to not need GOT for TLS. */ +#define TLS_NEEDS_GOT 0 + +/* What is the default setting for -mcpu= . We set it to v4.00.a even though + we are actually ahead. This is safest version that has generate code + compatible for the original ISA */ +#define MICROBLAZE_DEFAULT_CPU "v4.00.a" + +/* Macros to decide whether certain features are available or not, + depending on the instruction set architecture level. */ + +#define DRIVER_SELF_SPECS \ + "%{mxl-soft-mul:%<mno-xl-soft-mul}", \ + "%{mno-xl-barrel-shift:%<mxl-barrel-shift}", \ + "%{mno-xl-pattern-compare:%<mxl-pattern-compare}", \ + "%{mxl-soft-div:%<mno-xl-soft-div}", \ + "%{mxl-reorder:%<mno-xl-reorder}", \ + "%{msoft-float:%<mhard-float}" + +/* Tell collect what flags to pass to nm. */ +#ifndef NM_FLAGS +#define NM_FLAGS "-Bn" +#endif + +/* Names to predefine in the preprocessor for this target machine. */ +#define TARGET_CPU_CPP_BUILTINS() microblaze_cpp_define (pfile) + +/* Assembler specs. */ + +#define TARGET_ASM_SPEC "" + +#define ASM_SPEC "\ +%(target_asm_spec) \ +%{mbig-endian:-EB} \ +%{mlittle-endian:-EL}" + +/* Extra switches sometimes passed to the linker. */ +/* -xl-mode-xmdstub translated to -Zxl-mode-xmdstub -- deprecated. */ + +#define LINK_SPEC "%{shared:-shared} -N -relax \ + %{mbig-endian:-EB --oformat=elf32-microblaze} \ + %{mlittle-endian:-EL --oformat=elf32-microblazeel} \ + %{Zxl-mode-xmdstub:-defsym _TEXT_START_ADDR=0x800} \ + %{mxl-mode-xmdstub:-defsym _TEXT_START_ADDR=0x800} \ + %{mxl-gp-opt:%{G*}} %{!mxl-gp-opt: -G 0} \ + %{!T*: -dT xilinx.ld%s}" + +/* Specs for the compiler proper */ + +#ifndef CC1_SPEC +#define CC1_SPEC " \ +%{G*} \ +%(subtarget_cc1_spec) \ +%{mxl-multiply-high:-mcpu=v6.00.a} \ +" +#endif + +#define EXTRA_SPECS \ + { "target_asm_spec", TARGET_ASM_SPEC }, \ + SUBTARGET_EXTRA_SPECS + +/* Local compiler-generated symbols must have a prefix that the assembler + understands. */ + +#ifndef LOCAL_LABEL_PREFIX +#define LOCAL_LABEL_PREFIX "$" +#endif + +/* fixed registers. */ +#define MB_ABI_BASE_REGNUM 0 +#define MB_ABI_STACK_POINTER_REGNUM 1 +#define MB_ABI_GPRO_REGNUM 2 +#define MB_ABI_GPRW_REGNUM 13 +#define MB_ABI_INTR_RETURN_ADDR_REGNUM 14 +#define MB_ABI_SUB_RETURN_ADDR_REGNUM 15 +#define MB_ABI_DEBUG_RETURN_ADDR_REGNUM 16 +#define MB_ABI_EXCEPTION_RETURN_ADDR_REGNUM 17 +#define MB_ABI_ASM_TEMP_REGNUM 18 +/* This is our temp register. */ +#define MB_ABI_FRAME_POINTER_REGNUM 19 +#define MB_ABI_PIC_ADDR_REGNUM 20 +#define MB_ABI_PIC_FUNC_REGNUM 21 +/* Volatile registers. */ +#define MB_ABI_INT_RETURN_VAL_REGNUM 3 +#define MB_ABI_INT_RETURN_VAL2_REGNUM 4 +#define MB_ABI_FIRST_ARG_REGNUM 5 +#define MB_ABI_LAST_ARG_REGNUM 10 +#define MB_ABI_MAX_ARG_REGS (MB_ABI_LAST_ARG_REGNUM \ + - MB_ABI_FIRST_ARG_REGNUM + 1) +#define MB_ABI_STATIC_CHAIN_REGNUM 3 +#define MB_ABI_TEMP1_REGNUM 11 +#define MB_ABI_TEMP2_REGNUM 12 +#define MB_ABI_MSR_SAVE_REG 11 +/* Volatile register used to save MSR in interrupt handlers. */ + + +/* Debug stuff. */ + +/* How to renumber registers for dbx and gdb. */ +#define DBX_REGISTER_NUMBER(REGNO) microblaze_dbx_regno[(REGNO)] + +/* Generate DWARF exception handling info. */ +#define DWARF2_UNWIND_INFO 1 + +/* Don't generate .loc operations. */ +#define DWARF2_ASM_LINE_DEBUG_INFO 0 + +/* The DWARF 2 CFA column which tracks the return address. */ +#define DWARF_FRAME_RETURN_COLUMN \ + (GP_REG_FIRST + MB_ABI_SUB_RETURN_ADDR_REGNUM) + +/* Initial state of return address on entry to func = R15. + Actually, the RA is at R15+8, but gcc doesn't know how + to generate this. + NOTE: GDB has a workaround and expects this incorrect value. + If this is fixed, a corresponding fix to GDB is needed. */ +#define INCOMING_RETURN_ADDR_RTX \ + gen_rtx_REG (VOIDmode, GP_REG_FIRST + MB_ABI_SUB_RETURN_ADDR_REGNUM) + +/* Use DWARF 2 debugging information by default. */ +#define DWARF2_DEBUGGING_INFO +#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG + +/* Target machine storage layout */ + +#define BITS_BIG_ENDIAN 0 +#define BYTES_BIG_ENDIAN (TARGET_LITTLE_ENDIAN == 0) +#define WORDS_BIG_ENDIAN (BYTES_BIG_ENDIAN) +#define BITS_PER_WORD 32 +#define UNITS_PER_WORD 4 +#define MIN_UNITS_PER_WORD 4 +#define INT_TYPE_SIZE 32 +#define SHORT_TYPE_SIZE 16 +#define LONG_TYPE_SIZE 32 +#define LONG_LONG_TYPE_SIZE 64 +#define FLOAT_TYPE_SIZE 32 +#define DOUBLE_TYPE_SIZE 64 +#define LONG_DOUBLE_TYPE_SIZE 64 +#define POINTER_SIZE 32 +#define PARM_BOUNDARY 32 +#define FUNCTION_BOUNDARY 32 +#define EMPTY_FIELD_BOUNDARY 32 +#define STRUCTURE_SIZE_BOUNDARY 8 +#define BIGGEST_ALIGNMENT 32 +#define STRICT_ALIGNMENT 1 +#define PCC_BITFIELD_TYPE_MATTERS 1 + +#undef SIZE_TYPE +#define SIZE_TYPE "unsigned int" + +#undef PTRDIFF_TYPE +#define PTRDIFF_TYPE "int" + +#define CONSTANT_ALIGNMENT(EXP, ALIGN) \ + ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \ + && (ALIGN) < BITS_PER_WORD \ + ? BITS_PER_WORD \ + : (ALIGN)) + +#define DATA_ALIGNMENT(TYPE, ALIGN) \ + ((((ALIGN) < BITS_PER_WORD) \ + && (TREE_CODE (TYPE) == ARRAY_TYPE \ + || TREE_CODE (TYPE) == UNION_TYPE \ + || TREE_CODE (TYPE) == RECORD_TYPE)) ? BITS_PER_WORD : (ALIGN)) + +#define LOCAL_ALIGNMENT(TYPE, ALIGN) \ + (((TREE_CODE (TYPE) == ARRAY_TYPE \ + && TYPE_MODE (TREE_TYPE (TYPE)) == QImode) \ + && (ALIGN) < BITS_PER_WORD) ? BITS_PER_WORD : (ALIGN)) + +#define WORD_REGISTER_OPERATIONS + +#define LOAD_EXTEND_OP(MODE) ZERO_EXTEND + +#define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \ + if (GET_MODE_CLASS (MODE) == MODE_INT \ + && GET_MODE_SIZE (MODE) < 4) \ + (MODE) = SImode; + +/* Standard register usage. */ + +/* On the MicroBlaze, we have 32 integer registers */ + +#define FIRST_PSEUDO_REGISTER 36 + +#define FIXED_REGISTERS \ +{ \ + 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, \ + 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ + 1, 1, 1, 1 \ +} + +#define CALL_USED_REGISTERS \ +{ \ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ + 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ + 1, 1, 1, 1 \ +} + +#define GP_REG_FIRST 0 +#define GP_REG_LAST 31 +#define GP_REG_NUM (GP_REG_LAST - GP_REG_FIRST + 1) +#define GP_DBX_FIRST 0 + +#define ST_REG 32 +#define AP_REG_NUM 33 +#define RAP_REG_NUM 34 +#define FRP_REG_NUM 35 + +#define GP_REG_P(REGNO) ((unsigned) ((REGNO) - GP_REG_FIRST) < GP_REG_NUM) +#define ST_REG_P(REGNO) ((REGNO) == ST_REG) + +#define HARD_REGNO_NREGS(REGNO, MODE) \ + ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) + +/* Value is 1 if hard register REGNO can hold a value of machine-mode + MODE. In 32 bit mode, require that DImode and DFmode be in even + registers. For DImode, this makes some of the insns easier to + write, since you don't have to worry about a DImode value in + registers 3 & 4, producing a result in 4 & 5. + + To make the code simpler HARD_REGNO_MODE_OK now just references an + array built in override_options. Because machmodes.h is not yet + included before this file is processed, the MODE bound can't be + expressed here. */ +extern char microblaze_hard_regno_mode_ok[][FIRST_PSEUDO_REGISTER]; +#define HARD_REGNO_MODE_OK(REGNO, MODE) \ + microblaze_hard_regno_mode_ok[ (int)(MODE) ][ (REGNO)] + +#define MODES_TIEABLE_P(MODE1, MODE2) \ + ((GET_MODE_CLASS (MODE1) == MODE_FLOAT || \ + GET_MODE_CLASS (MODE1) == MODE_COMPLEX_FLOAT) \ + == (GET_MODE_CLASS (MODE2) == MODE_FLOAT || \ + GET_MODE_CLASS (MODE2) == MODE_COMPLEX_FLOAT)) + +#define STACK_POINTER_REGNUM (GP_REG_FIRST + MB_ABI_STACK_POINTER_REGNUM) + +#define STACK_POINTER_OFFSET FIRST_PARM_OFFSET(FNDECL) + +/* Base register for access to local variables of the function. We + pretend that the frame pointer is + MB_ABI_INTR_RETURN_ADDR_REGNUM, and then eliminate it + to HARD_FRAME_POINTER_REGNUM. We can get away with this because + rMB_ABI_INTR_RETUREN_ADDR_REGNUM is a fixed + register(return address for interrupt), and will not be used for + anything else. */ + +#define FRAME_POINTER_REGNUM FRP_REG_NUM +#define HARD_FRAME_POINTER_REGNUM \ + (GP_REG_FIRST + MB_ABI_FRAME_POINTER_REGNUM) +#define ARG_POINTER_REGNUM AP_REG_NUM +#define RETURN_ADDRESS_POINTER_REGNUM RAP_REG_NUM +#define STATIC_CHAIN_REGNUM \ + (GP_REG_FIRST + MB_ABI_STATIC_CHAIN_REGNUM) + +/* registers used in prologue/epilogue code when the stack frame + is larger than 32K bytes. These registers must come from the + scratch register set, and not used for passing and returning + arguments and any other information used in the calling sequence + (such as pic). */ + +#define MICROBLAZE_TEMP1_REGNUM \ + (GP_REG_FIRST + MB_ABI_TEMP1_REGNUM) + +#define MICROBLAZE_TEMP2_REGNUM \ + (GP_REG_FIRST + MB_ABI_TEMP2_REGNUM) + +#define NO_FUNCTION_CSE 1 + +#define PIC_OFFSET_TABLE_REGNUM (GP_REG_FIRST + MB_ABI_PIC_ADDR_REGNUM) + +enum reg_class +{ + NO_REGS, /* no registers in set. */ + GR_REGS, /* integer registers. */ + ST_REGS, /* status register. */ + ALL_REGS, /* all registers. */ + LIM_REG_CLASSES /* max value + 1. */ +}; + +#define N_REG_CLASSES (int) LIM_REG_CLASSES + +#define GENERAL_REGS GR_REGS + +#define REG_CLASS_NAMES \ +{ \ + "NO_REGS", \ + "GR_REGS", \ + "ST_REGS", \ + "ALL_REGS" \ +} + +#define REG_CLASS_CONTENTS \ +{ \ + { 0x00000000, 0x00000000 }, /* no registers. */ \ + { 0xffffffff, 0x00000000 }, /* integer registers. */ \ + { 0x00000000, 0x00000001 }, /* status registers. */ \ + { 0xffffffff, 0x0000000f } /* all registers. */ \ +} + +extern enum reg_class microblaze_regno_to_class[]; + +#define REGNO_REG_CLASS(REGNO) microblaze_regno_to_class[ (REGNO) ] + +#define BASE_REG_CLASS GR_REGS + +#define INDEX_REG_CLASS GR_REGS + +#define GR_REG_CLASS_P(CLASS) ((CLASS) == GR_REGS) + +/* REGISTER AND CONSTANT CLASSES */ + +#define SMALL_INT(X) ((unsigned HOST_WIDE_INT) (INTVAL (X) + 0x8000) < 0x10000) +#define LARGE_INT(X) \ + (INTVAL (X) > 0 && UINTVAL (X) >= 0x80000000 && UINTVAL (X) <= 0xffffffff) +#define PLT_ADDR_P(X) (GET_CODE (X) == UNSPEC && XINT (X,1) == UNSPEC_PLT) +/* Test for a valid operand for a call instruction. + Don't allow the arg pointer register or virtual regs + since they may change into reg + const, which the patterns + can't handle yet. */ +#define CALL_INSN_OP(X) (CONSTANT_ADDRESS_P (X) \ + || (GET_CODE (X) == REG && X != arg_pointer_rtx\ + && ! (REGNO (X) >= FIRST_PSEUDO_REGISTER \ + && REGNO (X) <= LAST_VIRTUAL_REGISTER))) + +/* True if VALUE is a signed 16-bit number. */ +#define SMALL_OPERAND(VALUE) \ + ((unsigned HOST_WIDE_INT) (VALUE) + 0x8000 < 0x10000) + +/* Constant which cannot be loaded in one instruction. */ +#define LARGE_OPERAND(VALUE) \ + ((((VALUE) & ~0x0000ffff) != 0) \ + && (((VALUE) & ~0x0000ffff) != ~0x0000ffff) \ + && (((VALUE) & 0x0000ffff) != 0 \ + || (((VALUE) & ~2147483647) != 0 \ + && ((VALUE) & ~2147483647) != ~2147483647))) + +#define PREFERRED_RELOAD_CLASS(X,CLASS) \ + ((CLASS) != ALL_REGS \ + ? (CLASS) \ + : ((GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ + || GET_MODE_CLASS (GET_MODE (X)) == MODE_COMPLEX_FLOAT) \ + ? (GR_REGS) \ + : ((GET_MODE_CLASS (GET_MODE (X)) == MODE_INT \ + || GET_MODE (X) == VOIDmode) \ + ? (GR_REGS) : (CLASS)))) + +/* Stack layout; function entry, exit and calling. */ + +#define STACK_GROWS_DOWNWARD + +/* Changed the starting frame offset to including the new link stuff */ +#define STARTING_FRAME_OFFSET \ + (crtl->outgoing_args_size + FIRST_PARM_OFFSET(FNDECL)) + +/* The return address for the current frame is in r31 if this is a leaf + function. Otherwise, it is on the stack. It is at a variable offset + from sp/fp/ap, so we define a fake hard register rap which is a + poiner to the return address on the stack. This always gets eliminated + during reload to be either the frame pointer or the stack pointer plus + an offset. */ + +#define RETURN_ADDR_RTX(count, frame) \ + microblaze_return_addr(count,frame) + +extern struct microblaze_frame_info current_frame_info; + +#define ELIMINABLE_REGS \ +{{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ + { ARG_POINTER_REGNUM, GP_REG_FIRST + MB_ABI_FRAME_POINTER_REGNUM}, \ + { RETURN_ADDRESS_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ + { RETURN_ADDRESS_POINTER_REGNUM, \ + GP_REG_FIRST + MB_ABI_FRAME_POINTER_REGNUM}, \ + { RETURN_ADDRESS_POINTER_REGNUM, \ + GP_REG_FIRST + MB_ABI_SUB_RETURN_ADDR_REGNUM}, \ + { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ + { FRAME_POINTER_REGNUM, GP_REG_FIRST + MB_ABI_FRAME_POINTER_REGNUM}} + +#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ + (OFFSET) = microblaze_initial_elimination_offset ((FROM), (TO)) + +#define ACCUMULATE_OUTGOING_ARGS 1 + +#define FIRST_PARM_OFFSET(FNDECL) (UNITS_PER_WORD) + +#define ARG_POINTER_CFA_OFFSET(FNDECL) 0 + +#define REG_PARM_STACK_SPACE(FNDECL) (MAX_ARGS_IN_REGISTERS * UNITS_PER_WORD) + +#define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) 1 + +#define STACK_BOUNDARY 32 + +#define NUM_OF_ARGS 6 + +#define GP_RETURN (GP_REG_FIRST + MB_ABI_INT_RETURN_VAL_REGNUM) + +#define GP_ARG_FIRST (GP_REG_FIRST + MB_ABI_FIRST_ARG_REGNUM) +#define GP_ARG_LAST (GP_REG_FIRST + MB_ABI_LAST_ARG_REGNUM) + +#define MAX_ARGS_IN_REGISTERS MB_ABI_MAX_ARG_REGS + +#define LIBCALL_VALUE(MODE) \ + gen_rtx_REG ( \ + ((GET_MODE_CLASS (MODE) != MODE_INT \ + || GET_MODE_SIZE (MODE) >= 4) \ + ? (MODE) \ + : SImode), GP_RETURN) + +/* 1 if N is a possible register number for a function value. + On the MicroBlaze, R2 R3 are the only register thus used. + Currently, R2 are only implemented here (C has no complex type) */ + +#define FUNCTION_VALUE_REGNO_P(N) ((N) == GP_RETURN) + +#define FUNCTION_ARG_REGNO_P(N) (((N) >= GP_ARG_FIRST && (N) <= GP_ARG_LAST)) + +typedef struct microblaze_args +{ + int gp_reg_found; /* whether a gp register was found yet */ + int arg_number; /* argument number */ + int arg_words; /* # total words the arguments take */ + int fp_arg_words; /* # words for FP args */ + int last_arg_fp; /* nonzero if last arg was FP (EABI only) */ + int fp_code; /* Mode of FP arguments */ + int num_adjusts; /* number of adjustments made */ + /* Adjustments made to args pass in regs. */ + /* ??? The size is doubled to work around a bug in the code that sets the + adjustments in function_arg. */ + rtx adjust[MAX_ARGS_IN_REGISTERS * 2]; +} CUMULATIVE_ARGS; + +#define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,FNDECL,N_NAMED_ARGS) \ + init_cumulative_args (&CUM, FNTYPE, LIBNAME) + +#define NO_PROFILE_COUNTERS 1 + +#define FUNCTION_PROFILER(FILE, LABELNO) { \ + { \ + fprintf (FILE, "\tbrki\tr16,_mcount\n"); \ + } \ + } + +#define EXIT_IGNORE_STACK 1 + +/* 4 insns + 2 words of data. */ +#define TRAMPOLINE_SIZE (6 * 4) + +#define TRAMPOLINE_ALIGNMENT 32 + +#define REGNO_OK_FOR_BASE_P(regno) microblaze_regno_ok_for_base_p ((regno), 1) + +#define REGNO_OK_FOR_INDEX_P(regno) microblaze_regno_ok_for_base_p ((regno), 1) + +#ifndef REG_OK_STRICT +#define REG_STRICT_FLAG 0 +#else +#define REG_STRICT_FLAG 1 +#endif + +#define REG_OK_FOR_BASE_P(X) \ + microblaze_regno_ok_for_base_p (REGNO (X), REG_STRICT_FLAG) + +#define REG_OK_FOR_INDEX_P(X) \ + microblaze_regno_ok_for_base_p (REGNO (X), REG_STRICT_FLAG) + +#define MAX_REGS_PER_ADDRESS 2 + + +/* Identify valid constant addresses. Exclude if PIC addr which + needs scratch register. */ +#define CONSTANT_ADDRESS_P(X) \ + (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \ + || GET_CODE (X) == CONST_INT \ + || (GET_CODE (X) == CONST \ + && ! (flag_pic && pic_address_needs_scratch (X)))) + +/* Define this, so that when PIC, reload won't try to reload invalid + addresses which require two reload registers. */ +#define LEGITIMATE_PIC_OPERAND_P(X) microblaze_legitimate_pic_operand (X) + +#define CASE_VECTOR_MODE (SImode) + +#ifndef DEFAULT_SIGNED_CHAR +#define DEFAULT_SIGNED_CHAR 1 +#endif + +#define MOVE_MAX 4 +#define MAX_MOVE_MAX 8 + +#define SLOW_BYTE_ACCESS 1 + +/* sCOND operations return 1. */ +#define STORE_FLAG_VALUE 1 + +#define SHIFT_COUNT_TRUNCATED 1 + +/* This results in inefficient code for 64 bit to 32 conversions. + Something needs to be done about this. Perhaps not use any 32 bit + instructions? Perhaps use PROMOTE_MODE? */ +#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 + +#define Pmode SImode + +#define FUNCTION_MODE SImode + +/* Mode should always be SImode */ +#define REGISTER_MOVE_COST(MODE, FROM, TO) \ + ( GR_REG_CLASS_P (FROM) && GR_REG_CLASS_P (TO) ? 2 \ + : (FROM) == ST_REGS && GR_REG_CLASS_P (TO) ? 4 \ + : 12) + +#define MEMORY_MOVE_COST(MODE,CLASS,TO_P) \ + (4 + memory_move_secondary_cost ((MODE), (CLASS), (TO_P))) + +#define BRANCH_COST(speed_p, predictable_p) 2 + +/* Control the assembler format that we output. */ +#define ASM_APP_ON " #APP\n" +#define ASM_APP_OFF " #NO_APP\n" + +#define REGISTER_NAMES { \ + "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ + "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \ + "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \ + "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31", \ + "rmsr", "$ap", "$rap", "$frp" } + +#define ADDITIONAL_REGISTER_NAMES \ +{ \ + { "r0", 0 + GP_REG_FIRST }, \ + { "r1", 1 + GP_REG_FIRST }, \ + { "r2", 2 + GP_REG_FIRST }, \ + { "r3", 3 + GP_REG_FIRST }, \ + { "r4", 4 + GP_REG_FIRST }, \ + { "r5", 5 + GP_REG_FIRST }, \ + { "r6", 6 + GP_REG_FIRST }, \ + { "r7", 7 + GP_REG_FIRST }, \ + { "r8", 8 + GP_REG_FIRST }, \ + { "r9", 9 + GP_REG_FIRST }, \ + { "r10", 10 + GP_REG_FIRST }, \ + { "r11", 11 + GP_REG_FIRST }, \ + { "r12", 12 + GP_REG_FIRST }, \ + { "r13", 13 + GP_REG_FIRST }, \ + { "r14", 14 + GP_REG_FIRST }, \ + { "r15", 15 + GP_REG_FIRST }, \ + { "r16", 16 + GP_REG_FIRST }, \ + { "r17", 17 + GP_REG_FIRST }, \ + { "r18", 18 + GP_REG_FIRST }, \ + { "r19", 19 + GP_REG_FIRST }, \ + { "r20", 20 + GP_REG_FIRST }, \ + { "r21", 21 + GP_REG_FIRST }, \ + { "r22", 22 + GP_REG_FIRST }, \ + { "r23", 23 + GP_REG_FIRST }, \ + { "r24", 24 + GP_REG_FIRST }, \ + { "r25", 25 + GP_REG_FIRST }, \ + { "r26", 26 + GP_REG_FIRST }, \ + { "r27", 27 + GP_REG_FIRST }, \ + { "r28", 28 + GP_REG_FIRST }, \ + { "r29", 29 + GP_REG_FIRST }, \ + { "r30", 30 + GP_REG_FIRST }, \ + { "r31", 31 + GP_REG_FIRST }, \ + { "rmsr", ST_REG} \ +} + +#define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE) + +#define PRINT_OPERAND_PUNCT_VALID_P(CODE) microblaze_print_operand_punct[CODE] + +#define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR) + +/* ASM_OUTPUT_ALIGNED_COMMON and ASM_OUTPUT_ALIGNED_LOCAL + + Unfortunately, we still need to set the section explicitly. Somehow, + our binutils assign .comm and .lcomm variables to the "current" section + in the assembly file, rather than where they implicitly belong. We need to + remove this explicit setting in GCC when binutils can understand sections + better. */ +#undef ASM_OUTPUT_ALIGNED_COMMON +#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \ +do { \ + if ((SIZE) > 0 && (SIZE) <= INT_MAX \ + && (int) (SIZE) <= microblaze_section_threshold \ + && TARGET_XLGPOPT) \ + { \ + switch_to_section (sbss_section); \ + } \ + else \ + { \ + switch_to_section (bss_section); \ + } \ + fprintf (FILE, "%s", COMMON_ASM_OP); \ + assemble_name ((FILE), (NAME)); \ + fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \ + (SIZE), (ALIGN) / BITS_PER_UNIT); \ + ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \ +} while (0) + +#undef ASM_OUTPUT_ALIGNED_LOCAL +#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \ +do { \ + if ((SIZE) > 0 && (SIZE) <= INT_MAX \ + && (int) (SIZE) <= microblaze_section_threshold \ + && TARGET_XLGPOPT) \ + { \ + switch_to_section (sbss_section); \ + } \ + else \ + { \ + switch_to_section (bss_section); \ + } \ + fprintf (FILE, "%s", LCOMMON_ASM_OP); \ + assemble_name ((FILE), (NAME)); \ + fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",%u\n", \ + (SIZE), (ALIGN) / BITS_PER_UNIT); \ + ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \ +} while (0) + +#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ +do { \ + ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN); \ +} while (0) + +#define ASM_DECLARE_FUNCTION_NAME(STREAM,NAME,DECL) \ +{ \ +} + +#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ + sprintf ((LABEL), "*%s%s%ld", (LOCAL_LABEL_PREFIX), (PREFIX), (long)(NUM)) + +#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \ + fprintf (STREAM, "\t%s\t%sL%d\n", \ + ".gpword", \ + LOCAL_LABEL_PREFIX, VALUE) + +#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \ +do { \ + if (flag_pic == 2) \ + fprintf (STREAM, "\t%s\t%sL%d@GOTOFF\n", \ + ".gpword", \ + LOCAL_LABEL_PREFIX, VALUE); \ + else \ + fprintf (STREAM, "\t%s\t%sL%d\n", \ + ".gpword", \ + LOCAL_LABEL_PREFIX, VALUE); \ +} while (0) + +#define ASM_OUTPUT_ALIGN(STREAM,LOG) \ + fprintf (STREAM, "\t.align\t%d\n", (LOG)) + +#define ASM_OUTPUT_SKIP(STREAM,SIZE) \ + fprintf (STREAM, "\t.space\t%lu\n", (SIZE)) + +#define ASCII_DATA_ASM_OP "\t.ascii\t" +#define STRING_ASM_OP "\t.asciz\t" + +#undef TARGET_ASM_OUTPUT_IDENT +#define TARGET_ASM_OUTPUT_IDENT microblaze_asm_output_ident + +/* Default to -G 8 */ +#ifndef MICROBLAZE_DEFAULT_GVALUE +#define MICROBLAZE_DEFAULT_GVALUE 8 +#endif + +/* Given a decl node or constant node, choose the section to output it in + and select that section. */ + +/* Store in OUTPUT a string (made with alloca) containing + an assembler-name for a local static variable named NAME. + LABELNO is an integer which is different for each call. */ +#define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \ +( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \ + sprintf ((OUTPUT), "%s.%lu", (NAME), (unsigned long)(LABELNO))) + +/* How to start an assembler comment. + The leading space is important (the microblaze assembler requires it). */ +#ifndef ASM_COMMENT_START +#define ASM_COMMENT_START " #" +#endif + +#define BSS_VAR 1 +#define SBSS_VAR 2 +#define DATA_VAR 4 +#define SDATA_VAR 5 +#define RODATA_VAR 6 +#define SDATA2_VAR 7 + +/* These definitions are used in with the shift_type flag in the rtl. */ +#define SHIFT_CONST 1 +#define SHIFT_REG 2 +#define USE_ADDK 3 + +/* Handle interrupt attribute. */ +extern int interrupt_handler; +extern int fast_interrupt; +extern int save_volatiles; + +#define INTERRUPT_HANDLER_NAME "_interrupt_handler" +#define FAST_INTERRUPT_NAME "_fast_interrupt" + +/* The following #defines are used in the headers files. Always retain these. */ + +/* Added for declaring size at the end of the function. */ +#undef ASM_DECLARE_FUNCTION_SIZE +#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ + do { \ + if (!flag_inhibit_size_directive) \ + { \ + char label[256]; \ + static int labelno; \ + labelno++; \ + ASM_GENERATE_INTERNAL_LABEL (label, "Lfe", labelno); \ + (*targetm.asm_out.internal_label) (FILE, "Lfe", labelno); \ + fprintf (FILE, "%s", SIZE_ASM_OP); \ + assemble_name (FILE, (FNAME)); \ + fprintf (FILE, ","); \ + assemble_name (FILE, label); \ + fprintf (FILE, "-"); \ + assemble_name (FILE, (FNAME)); \ + putc ('\n', FILE); \ + } \ + } while (0) + +#define GLOBAL_ASM_OP "\t.globl\t" +#define TYPE_ASM_OP "\t.type\t" +#define SIZE_ASM_OP "\t.size\t" +#define COMMON_ASM_OP "\t.comm\t" +#define LCOMMON_ASM_OP "\t.lcomm\t" + +#define MAX_OFILE_ALIGNMENT (32768*8) + +#define TYPE_OPERAND_FMT "@%s" + +/* Write the extra assembler code needed to declare an object properly. */ +#undef ASM_DECLARE_OBJECT_NAME +#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ + do { \ + fprintf (FILE, "%s", TYPE_ASM_OP); \ + assemble_name (FILE, NAME); \ + putc (',', FILE); \ + fprintf (FILE, TYPE_OPERAND_FMT, "object"); \ + putc ('\n', FILE); \ + size_directive_output = 0; \ + if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \ + { \ + size_directive_output = 1; \ + fprintf (FILE, "%s", SIZE_ASM_OP); \ + assemble_name (FILE, NAME); \ + fprintf (FILE, "," HOST_WIDE_INT_PRINT_DEC "\n", \ + int_size_in_bytes (TREE_TYPE (DECL))); \ + } \ + microblaze_declare_object (FILE, NAME, "", ":\n", 0); \ + } while (0) + +#undef ASM_FINISH_DECLARE_OBJECT +#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \ +do { \ + const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \ + if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \ + && ! AT_END && TOP_LEVEL \ + && DECL_INITIAL (DECL) == error_mark_node \ + && !size_directive_output) \ + { \ + size_directive_output = 1; \ + fprintf (FILE, "%s", SIZE_ASM_OP); \ + assemble_name (FILE, name); \ + fprintf (FILE, "," HOST_WIDE_INT_PRINT_DEC "\n", \ + int_size_in_bytes (TREE_TYPE (DECL))); \ + } \ + } while (0) + +#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \ + do { fputc ( '\t', FILE); \ + assemble_name (FILE, LABEL1); \ + fputs ( " = ", FILE); \ + assemble_name (FILE, LABEL2); \ + fputc ( '\n', FILE); \ + } while (0) + +#define ASM_WEAKEN_LABEL(FILE,NAME) \ + do { fputs ("\t.weakext\t", FILE); \ + assemble_name (FILE, NAME); \ + fputc ('\n', FILE); \ + } while (0) + +#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1) +#undef UNIQUE_SECTION_P +#define UNIQUE_SECTION_P(DECL) (DECL_ONE_ONLY (DECL)) + +#undef TARGET_ASM_NAMED_SECTION +#define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section + +/* Define the strings to put out for each section in the object file. + + Note: For ctors/dtors, we want to give these sections the SHF_WRITE + attribute to allow shared libraries to patch/resolve addresses into + these locations. On Microblaze, there is no concept of shared libraries + yet, so this is for future use. */ +#define TEXT_SECTION_ASM_OP "\t.text" +#define DATA_SECTION_ASM_OP "\t.data" +#define READONLY_DATA_SECTION_ASM_OP \ + "\t.rodata" +#define BSS_SECTION_ASM_OP "\t.bss" +#define CTORS_SECTION_ASM_OP "\t.section\t.ctors,\"aw\"" +#define DTORS_SECTION_ASM_OP "\t.section\t.dtors,\"aw\"" +#define INIT_SECTION_ASM_OP "\t.section\t.init,\"ax\"" +#define FINI_SECTION_ASM_OP "\t.section\t.fini,\"ax\"" + +#define SDATA_SECTION_ASM_OP "\t.sdata" /* Small RW initialized data */ +#define SDATA2_SECTION_ASM_OP "\t.sdata2" /* Small RO initialized data */ +#define SBSS_SECTION_ASM_OP "\t.sbss" /* Small RW uninitialized data */ +#define SBSS2_SECTION_ASM_OP "\t.sbss2" /* Small RO uninitialized data */ + +/* We do this to save a few 10s of code space that would be taken up + by the call_FUNC () wrappers, used by the generic CRT_CALL_STATIC_FUNCTION + definition in crtstuff.c. */ +#define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC) \ + asm ( SECTION_OP "\n" \ + "\tbrlid r15, " #FUNC "\n\t nop\n" \ + TEXT_SECTION_ASM_OP); + +/* We need to group -lm as well, since some Newlib math functions + reference __errno! */ +#undef LIB_SPEC +#define LIB_SPEC \ +"%{!nostdlib: \ +%{pg:-start-group -lxilprofile -lgloss -lxil -lc -lm -end-group } \ +%{!pg:-start-group -lgloss -lxil -lc -lm -end-group }} " + +/* microblaze-unknown-elf target has no support of C99 runtime */ +#undef TARGET_LIBC_HAS_FUNCTION +#define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function + +#undef ENDFILE_SPEC +#define ENDFILE_SPEC "crtend.o%s crtn.o%s" + +#define STARTFILE_EXECUTABLE_SPEC "crt0.o%s crti.o%s crtbegin.o%s" +#define STARTFILE_XMDSTUB_SPEC "crt1.o%s crti.o%s crtbegin.o%s" +#define STARTFILE_BOOTSTRAP_SPEC "crt2.o%s crti.o%s crtbegin.o%s" +#define STARTFILE_NOVECTORS_SPEC "crt3.o%s crti.o%s crtbegin.o%s" +#define STARTFILE_CRTINIT_SPEC "%{!pg: %{!mno-clearbss: crtinit.o%s} \ +%{mno-clearbss: sim-crtinit.o%s}} \ +%{pg: %{!mno-clearbss: pgcrtinit.o%s} %{mno-clearbss: sim-pgcrtinit.o%s}}" + +#define STARTFILE_DEFAULT_SPEC STARTFILE_EXECUTABLE_SPEC + +#undef SUBTARGET_EXTRA_SPECS +#define SUBTARGET_EXTRA_SPECS \ + { "startfile_executable", STARTFILE_EXECUTABLE_SPEC }, \ + { "startfile_xmdstub", STARTFILE_XMDSTUB_SPEC }, \ + { "startfile_bootstrap", STARTFILE_BOOTSTRAP_SPEC }, \ + { "startfile_novectors", STARTFILE_NOVECTORS_SPEC }, \ + { "startfile_crtinit", STARTFILE_CRTINIT_SPEC }, \ + { "startfile_default", STARTFILE_DEFAULT_SPEC }, + +#undef STARTFILE_SPEC +#define STARTFILE_SPEC "\ +%{Zxl-mode-executable : %(startfile_executable) ; \ + mxl-mode-executable : %(startfile_executable) ; \ + Zxl-mode-xmdstub : %(startfile_xmdstub) ; \ + mxl-mode-xmdstub : %(startfile_xmdstub) ; \ + Zxl-mode-bootstrap : %(startfile_bootstrap) ; \ + mxl-mode-bootstrap : %(startfile_bootstrap) ; \ + Zxl-mode-novectors : %(startfile_novectors) ; \ + mxl-mode-novectors : %(startfile_novectors) ; \ + Zxl-mode-xilkernel : %(startfile_xilkernel) ; \ + mxl-mode-xilkernel : %(startfile_xilkernel) ; \ + : %(startfile_default) \ +} \ +%(startfile_crtinit)" |