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-rw-r--r--gcc-4.9/gcc/config/lm32/lm32.h545
1 files changed, 545 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/config/lm32/lm32.h b/gcc-4.9/gcc/config/lm32/lm32.h
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index 000000000..e4db51947
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+++ b/gcc-4.9/gcc/config/lm32/lm32.h
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+/* Definitions of target machine for GNU compiler, Lattice Mico32 architecture.
+ Contributed by Jon Beniston <jon@beniston.com>
+
+ Copyright (C) 2009-2014 Free Software Foundation, Inc.
+
+ This file is part of GCC.
+
+ GCC is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 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/>. */
+
+/*-------------------------------*/
+/* Run-time Target Specification */
+/*-------------------------------*/
+
+/* Target CPU builtins. */
+#define TARGET_CPU_CPP_BUILTINS() \
+ do \
+ { \
+ builtin_define ("__lm32__"); \
+ builtin_assert ("cpu=lm32"); \
+ builtin_assert ("machine=lm32"); \
+ if (TARGET_MULTIPLY_ENABLED) \
+ builtin_define ("__multiply_enabled__"); \
+ if (TARGET_DIVIDE_ENABLED) \
+ builtin_define ("__divide_enabled__"); \
+ if (TARGET_BARREL_SHIFT_ENABLED) \
+ builtin_define ("__barrel_shift_enabled__"); \
+ if (TARGET_SIGN_EXTEND_ENABLED) \
+ builtin_define ("__sign_extend_enabled__"); \
+ if (TARGET_USER_ENABLED) \
+ builtin_define ("__user_enabled__"); \
+ } \
+ while (0)
+
+#undef ASM_SPEC
+#define ASM_SPEC "\
+%{mmultiply-enabled} \
+%{mdivide-enabled} \
+%{mbarrel-shift-enabled} \
+%{msign-extend-enabled} \
+%{muser-enabled} \
+"
+
+/* Let link script define all link options.
+ Default to using simulator link script. */
+
+#undef STARTFILE_SPEC
+#define STARTFILE_SPEC ""
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC ""
+#undef LIB_SPEC
+#define LIB_SPEC "%{!T*:-T sim.ld}"
+
+#undef CC1_SPEC
+#define CC1_SPEC "%{G*}"
+
+/*---------------------------------*/
+/* Target machine storage layout. */
+/*---------------------------------*/
+
+#define BITS_BIG_ENDIAN 0
+#define BYTES_BIG_ENDIAN 1
+#define WORDS_BIG_ENDIAN 1
+
+#define BITS_PER_WORD 32
+#define UNITS_PER_WORD 4
+
+#define POINTER_SIZE 32
+
+#define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \
+do { \
+ if (GET_MODE_CLASS (MODE) == MODE_INT \
+ && GET_MODE_SIZE (MODE) < UNITS_PER_WORD) \
+ (MODE) = word_mode; \
+} while (0)
+
+#define PARM_BOUNDARY 32
+
+#define STACK_BOUNDARY 32
+
+#define BIGGEST_ALIGNMENT 64
+
+#define FUNCTION_BOUNDARY 32
+
+#define EMPTY_FIELD_BOUNDARY 32
+
+#define STRICT_ALIGNMENT 1
+
+#define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT
+
+/* Make strings word-aligned so strcpy from constants will be faster. */
+#define CONSTANT_ALIGNMENT(EXP, ALIGN) \
+ (TREE_CODE (EXP) == STRING_CST \
+ && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
+
+/* Make arrays and structures word-aligned to allow faster copying etc. */
+#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))
+
+/* We need this for the same reason as DATA_ALIGNMENT, namely to cause
+ character arrays to be word-aligned so that `strcpy' calls that copy
+ constants to character arrays can be done inline, and 'strcmp' can be
+ optimised to use word loads. */
+#define LOCAL_ALIGNMENT(TYPE, ALIGN) \
+ DATA_ALIGNMENT (TYPE, ALIGN)
+
+/*----------------------------------------*/
+/* Layout of source language data types. */
+/*----------------------------------------*/
+
+#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 DEFAULT_SIGNED_CHAR 0
+
+#define SIZE_TYPE "unsigned int"
+
+#define PTRDIFF_TYPE "int"
+
+/*---------------------------*/
+/* Standard register usage. */
+/*---------------------------*/
+
+#define FIRST_PSEUDO_REGISTER 32
+
+#define RV_REGNUM 1
+#define GP_REGNUM 26
+#define FP_REGNUM 27
+#define SP_REGNUM 28
+#define RA_REGNUM 29
+
+#define G_REG_P(X) ((X)<32)
+
+#define FIXED_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, 1, 0, 1, 0, 1, 1}
+
+#define CALL_USED_REGISTERS \
+{ 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, 1, 0, 1, 0, 1, 1}
+
+#define HARD_REGNO_NREGS(REGNO, MODE) \
+ ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
+
+#define HARD_REGNO_MODE_OK(REGNO, MODE) G_REG_P(REGNO)
+
+#define MODES_TIEABLE_P(MODE1, MODE2) \
+( GET_MODE_CLASS (MODE1) == MODE_INT \
+ && GET_MODE_CLASS (MODE2) == MODE_INT \
+ && GET_MODE_SIZE (MODE1) <= UNITS_PER_WORD \
+ && GET_MODE_SIZE (MODE2) <= UNITS_PER_WORD)
+
+#define AVOID_CCMODE_COPIES
+
+/*----------------------------------*/
+/* Register classes and constants. */
+/*----------------------------------*/
+
+enum reg_class
+{
+ NO_REGS,
+ GENERAL_REGS,
+ ALL_REGS,
+ LIM_REG_CLASSES
+};
+
+#define N_REG_CLASSES (int) LIM_REG_CLASSES
+
+#define REG_CLASS_NAMES { "NO_REGS", "GENERAL_REGS", "ALL_REGS" }
+
+#define REG_CLASS_CONTENTS \
+{ {0x00000000}, \
+ {0xffffffff}, \
+ {0xffffffff} \
+}
+
+#define REGNO_REG_CLASS(REGNO) \
+ (G_REG_P(REGNO) ? GENERAL_REGS : NO_REGS)
+
+#define INDEX_REG_CLASS NO_REGS
+
+#define BASE_REG_CLASS GENERAL_REGS
+
+#define REGNO_OK_FOR_BASE_P(REGNO) \
+ (G_REG_P (REGNO) || G_REG_P ((unsigned) reg_renumber[REGNO]))
+
+#define REGNO_OK_FOR_INDEX_P(REGNO) 0
+
+/*----------------------------------------*/
+/* Stack Layout and Calling Conventions. */
+/*----------------------------------------*/
+
+#define STACK_GROWS_DOWNWARD 1
+
+#define FRAME_GROWS_DOWNWARD 1
+
+#define STACK_POINTER_OFFSET (UNITS_PER_WORD)
+
+#define STARTING_FRAME_OFFSET (UNITS_PER_WORD)
+
+#define FIRST_PARM_OFFSET(FNDECL) (UNITS_PER_WORD)
+
+#define STACK_POINTER_REGNUM SP_REGNUM
+
+#define FRAME_POINTER_REGNUM FP_REGNUM
+
+#define ARG_POINTER_REGNUM FRAME_POINTER_REGNUM
+
+#define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (SImode, RA_REGNUM)
+
+#define RETURN_ADDR_RTX(count, frame) \
+ lm32_return_addr_rtx (count, frame)
+
+/* FIXME - This is not yet supported. */
+#define STATIC_CHAIN_REGNUM 9
+
+#define ELIMINABLE_REGS \
+{{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM }, \
+ { ARG_POINTER_REGNUM, STACK_POINTER_REGNUM }, \
+}
+
+#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
+ (OFFSET) = lm32_compute_initial_elimination_offset (FROM, TO)
+
+/*-----------------------------*/
+/* Function argument passing. */
+/*-----------------------------*/
+
+#define ACCUMULATE_OUTGOING_ARGS 1
+
+/*--------------------------------*/
+/* Passing Arguments in Registers */
+/*--------------------------------*/
+
+/* The first argument register. */
+#define LM32_FIRST_ARG_REG 1
+
+/* The number of (integer) argument register available. */
+#define LM32_NUM_ARG_REGS 8
+
+#define CUMULATIVE_ARGS int
+
+#define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT,N_NAMED_ARGS) \
+ (CUM) = 0
+
+#define FUNCTION_ARG_REGNO_P(r) \
+ (((r) >= LM32_FIRST_ARG_REG) && ((r) <= LM32_NUM_ARG_REGS))
+
+/*--------------------*/
+/* Function results. */
+/*--------------------*/
+
+#define FUNCTION_VALUE(VALTYPE, FUNC) \
+ gen_rtx_REG ((INTEGRAL_TYPE_P (VALTYPE) \
+ && TYPE_PRECISION (VALTYPE) < BITS_PER_WORD) \
+ ? word_mode \
+ : TYPE_MODE (VALTYPE), \
+ RV_REGNUM)
+
+#define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, RV_REGNUM)
+
+#define FUNCTION_VALUE_REGNO_P(N) ((N) == RV_REGNUM)
+
+#define RETURN_IN_MEMORY(TYPE) lm32_return_in_memory (TYPE)
+
+#define DEFAULT_PCC_STRUCT_RETURN 0
+
+/* Convert from bytes to ints. */
+#define LM32_NUM_INTS(X) (((X) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
+
+/* The number of (integer) registers required to hold a quantity of
+ type MODE. */
+#define LM32_NUM_REGS(MODE) LM32_NUM_INTS (GET_MODE_SIZE (MODE))
+
+/* The number of (integer) registers required to hold a quantity of
+ TYPE MODE. */
+#define LM32_NUM_REGS2(MODE, TYPE) \
+ LM32_NUM_INTS ((MODE) == BLKmode ? \
+ int_size_in_bytes (TYPE) : GET_MODE_SIZE (MODE))
+
+#define STRUCT_VALUE 0
+
+/*---------------------------*/
+/* Function entry and exit. */
+/*---------------------------*/
+
+/*-------------*/
+/* Profiling. */
+/*-------------*/
+
+#define FUNCTION_PROFILER(FILE, LABELNO)
+
+/*---------------*/
+/* Trampolines. */
+/*---------------*/
+
+#define TRAMPOLINE_SIZE 0
+
+/*---------------------*/
+/* Addressing Modes. */
+/*---------------------*/
+
+#define CONSTANT_ADDRESS_P(X) \
+ ((GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \
+ || GET_CODE (X) == CONST_INT || GET_CODE (X) == HIGH \
+ || (GET_CODE (X) == CONST)))
+
+#define MAX_REGS_PER_ADDRESS 1
+
+#define STRICT_REG_OK_FOR_BASE_P(X) \
+ (REGNO_OK_FOR_BASE_P (REGNO (X)))
+#define NONSTRICT_REG_OK_FOR_BASE_P(X) \
+ (G_REG_P (REGNO (X)) || !HARD_REGISTER_NUM_P (REGNO (X)))
+
+#ifdef REG_OK_STRICT
+#define REG_OK_FOR_BASE_P(X) STRICT_REG_OK_FOR_BASE_P(X)
+#else
+#define REG_OK_FOR_BASE_P(X) NONSTRICT_REG_OK_FOR_BASE_P(X)
+#endif
+
+/*-------------------------*/
+/* Condition Code Status. */
+/*-------------------------*/
+
+#define REVERSIBLE_CC_MODE(MODE) 1
+
+/*---------*/
+/* Costs. */
+/*---------*/
+
+#define SLOW_BYTE_ACCESS 1
+
+#define NO_FUNCTION_CSE
+
+#define BRANCH_COST(speed_p, predictable_p) 4
+
+#define MOVE_RATIO(speed) (speed ? 24 : 3)
+
+/*------------*/
+/* Sections. */
+/*------------*/
+
+#define TEXT_SECTION_ASM_OP "\t.section\t.text"
+#define DATA_SECTION_ASM_OP "\t.section\t.data"
+#define SDATA_SECTION_ASM_OP "\t.section\t.sdata,\"aw\""
+#define BSS_SECTION_ASM_OP "\t.section\t.bss"
+#define SBSS_SECTION_ASM_OP "\t.section\t.sbss,\"aw\""
+
+/*-------*/
+/* PIC. */
+/*-------*/
+
+#define PIC_OFFSET_TABLE_REGNUM (flag_pic ? GP_REGNUM : INVALID_REGNUM)
+
+#define JUMP_TABLES_IN_TEXT_SECTION (flag_pic)
+
+#define LEGITIMATE_PIC_OPERAND_P(X) \
+ (!(nonpic_symbol_mentioned_p (X)))
+
+/*-------------*/
+/* Assembler. */
+/*-------------*/
+
+#define ASM_COMMENT_START "#"
+
+#define ASM_APP_ON "#APP\n"
+
+#define ASM_APP_OFF "#NO_APP\n"
+
+#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)
+
+/* Override default implementation in elfos.h to support -G. */
+#undef ASM_OUTPUT_ALIGNED_LOCAL
+#define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN) \
+do { \
+ if ((SIZE) <= (unsigned HOST_WIDE_INT) g_switch_value) \
+ switch_to_section (sbss_section); \
+ else \
+ switch_to_section (bss_section); \
+ ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
+ if (!flag_inhibit_size_directive) \
+ ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, SIZE); \
+ ASM_OUTPUT_ALIGN ((FILE), exact_log2((ALIGN) / BITS_PER_UNIT)); \
+ ASM_OUTPUT_LABEL(FILE, NAME); \
+ ASM_OUTPUT_SKIP((FILE), (SIZE) ? (SIZE) : 1); \
+} while (0)
+
+/* Override default implementation in elfos.h to support -G. */
+#undef ASM_OUTPUT_ALIGNED_COMMON
+#define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN) \
+do \
+{ \
+ if ((SIZE) <= (unsigned HOST_WIDE_INT) g_switch_value) \
+ { \
+ switch_to_section (sbss_section); \
+ (*targetm.asm_out.globalize_label) (FILE, NAME); \
+ ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
+ if (!flag_inhibit_size_directive) \
+ ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, SIZE); \
+ ASM_OUTPUT_ALIGN ((FILE), exact_log2((ALIGN) / BITS_PER_UNIT)); \
+ ASM_OUTPUT_LABEL(FILE, NAME); \
+ ASM_OUTPUT_SKIP((FILE), (SIZE) ? (SIZE) : 1); \
+ } \
+ 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); \
+ } \
+} \
+while (0)
+
+#define ASM_OUTPUT_LABEL(FILE, NAME) \
+ do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
+
+#define ASM_OUTPUT_LABELREF(FILE,NAME) \
+ do { \
+ const char *xname = (NAME); \
+ if (xname[0] == '@') \
+ xname += 1; \
+ if (xname[0] == '*') \
+ xname += 1; \
+ fputs (xname, FILE); \
+ } while (0)
+
+#define ASM_OUTPUT_SYMBOL_REF(STREAM, SYMBOL) \
+ do { \
+ assemble_name (STREAM, XSTR (SYMBOL, 0)); \
+ } while (0)
+
+#define GLOBAL_ASM_OP "\t.global\t"
+
+#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", "gp", "fp", "sp", "ra", "ea", "ba"}
+
+#define PRINT_OPERAND_PUNCT_VALID_P(CHAR) \
+ (((CHAR) == '&') || ((CHAR) == '@') || ((CHAR) == '*'))
+
+#define PRINT_OPERAND(FILE, X, CODE) \
+ lm32_print_operand (FILE, X, CODE)
+
+#define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
+ lm32_print_operand_address (FILE, ADDR)
+
+#ifndef LOCAL_LABEL_PREFIX
+#define LOCAL_LABEL_PREFIX "."
+#endif
+
+#define ASM_OUTPUT_ALIGN(FILE,LOG) \
+ do { if ((LOG) != 0) fprintf (FILE, "\t.align %d\n", (1 << (LOG))); } while (0)
+
+#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
+do { \
+ char label[64]; \
+ ASM_GENERATE_INTERNAL_LABEL (label, "L", VALUE); \
+ fprintf (FILE, "\n\t.word\t"); \
+ assemble_name (FILE, label); \
+ fprintf (FILE, "\n"); \
+} while (0)
+
+#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
+do { \
+ char label[64]; \
+ fprintf (FILE, "\t.word\t("); \
+ ASM_GENERATE_INTERNAL_LABEL (label, "L", VALUE); \
+ assemble_name (FILE, label); \
+ fprintf (FILE, "-"); \
+ ASM_GENERATE_INTERNAL_LABEL (label, "L", REL); \
+ assemble_name (FILE, label); \
+ fprintf (FILE, ")\n"); \
+} while (0)
+
+/*-------------*/
+/* Debugging. */
+/*-------------*/
+
+#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
+
+#define DEFAULT_GDB_EXTENSIONS 1
+
+/*--------*/
+/* Misc. */
+/*--------*/
+
+#define CASE_VECTOR_MODE Pmode
+
+#define WORD_REGISTER_OPERATIONS
+
+#define LOAD_EXTEND_OP(MODE) ZERO_EXTEND
+
+#define SHORT_IMMEDIATES_SIGN_EXTEND
+
+#define MOVE_MAX UNITS_PER_WORD
+#define MAX_MOVE_MAX 4
+
+#define SHIFT_COUNT_TRUNCATED 1
+
+#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
+
+#define Pmode SImode
+
+#define FUNCTION_MODE SImode
+
+#ifndef NO_IMPLICIT_EXTERN_C
+#define NO_IMPLICIT_EXTERN_C
+#endif
+
+#define STORE_FLAG_VALUE 1