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Diffstat (limited to 'gcc/config/score/score.c')
| -rw-r--r-- | gcc/config/score/score.c | 736 |
1 files changed, 736 insertions, 0 deletions
diff --git a/gcc/config/score/score.c b/gcc/config/score/score.c new file mode 100644 index 000000000..99695bfc5 --- /dev/null +++ b/gcc/config/score/score.c @@ -0,0 +1,736 @@ +/* Output routines for Sunplus S+CORE processor + Copyright (C) 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. + Contributed by Sunnorth. + + 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/>. */ + +#include "config.h" +#include "system.h" +#include "coretypes.h" +#include "tm.h" +#include "rtl.h" +#include "regs.h" +#include "hard-reg-set.h" +#include "insn-config.h" +#include "conditions.h" +#include "insn-attr.h" +#include "recog.h" +#include "diagnostic-core.h" +#include "output.h" +#include "tree.h" +#include "function.h" +#include "expr.h" +#include "optabs.h" +#include "flags.h" +#include "reload.h" +#include "tm_p.h" +#include "ggc.h" +#include "gstab.h" +#include "hashtab.h" +#include "debug.h" +#include "target.h" +#include "target-def.h" +#include "integrate.h" +#include "langhooks.h" +#include "score7.h" +#include "df.h" + +static void score_option_override (void); + +/* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */ +static const struct default_options score_option_optimization_table[] = + { + { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 }, + { OPT_LEVELS_NONE, 0, NULL, 0 } + }; + +#undef TARGET_ASM_FILE_START +#define TARGET_ASM_FILE_START score_asm_file_start + +#undef TARGET_ASM_FILE_END +#define TARGET_ASM_FILE_END score_asm_file_end + +#undef TARGET_ASM_FUNCTION_PROLOGUE +#define TARGET_ASM_FUNCTION_PROLOGUE score_function_prologue + +#undef TARGET_ASM_FUNCTION_EPILOGUE +#define TARGET_ASM_FUNCTION_EPILOGUE score_function_epilogue + +#undef TARGET_DEFAULT_TARGET_FLAGS +#define TARGET_DEFAULT_TARGET_FLAGS TARGET_DEFAULT + +#undef TARGET_HANDLE_OPTION +#define TARGET_HANDLE_OPTION score_handle_option + +#undef TARGET_OPTION_OVERRIDE +#define TARGET_OPTION_OVERRIDE score_option_override + +#undef TARGET_OPTION_OPTIMIZATION_TABLE +#define TARGET_OPTION_OPTIMIZATION_TABLE score_option_optimization_table + +#undef TARGET_LEGITIMIZE_ADDRESS +#define TARGET_LEGITIMIZE_ADDRESS score_legitimize_address + +#undef TARGET_SCHED_ISSUE_RATE +#define TARGET_SCHED_ISSUE_RATE score_issue_rate + +#undef TARGET_ASM_SELECT_RTX_SECTION +#define TARGET_ASM_SELECT_RTX_SECTION score_select_rtx_section + +#undef TARGET_IN_SMALL_DATA_P +#define TARGET_IN_SMALL_DATA_P score_in_small_data_p + +#undef TARGET_FUNCTION_OK_FOR_SIBCALL +#define TARGET_FUNCTION_OK_FOR_SIBCALL score_function_ok_for_sibcall + +#undef TARGET_STRICT_ARGUMENT_NAMING +#define TARGET_STRICT_ARGUMENT_NAMING hook_bool_CUMULATIVE_ARGS_true + +#undef TARGET_ASM_OUTPUT_MI_THUNK +#define TARGET_ASM_OUTPUT_MI_THUNK score_output_mi_thunk + +#undef TARGET_PROMOTE_FUNCTION_MODE +#define TARGET_PROMOTE_FUNCTION_MODE default_promote_function_mode_always_promote + +#undef TARGET_PROMOTE_PROTOTYPES +#define TARGET_PROMOTE_PROTOTYPES hook_bool_const_tree_true + +#undef TARGET_MUST_PASS_IN_STACK +#define TARGET_MUST_PASS_IN_STACK must_pass_in_stack_var_size + +#undef TARGET_ARG_PARTIAL_BYTES +#define TARGET_ARG_PARTIAL_BYTES score_arg_partial_bytes + +#undef TARGET_FUNCTION_ARG +#define TARGET_FUNCTION_ARG score_function_arg + +#undef TARGET_FUNCTION_ARG_ADVANCE +#define TARGET_FUNCTION_ARG_ADVANCE score_function_arg_advance + +#undef TARGET_PASS_BY_REFERENCE +#define TARGET_PASS_BY_REFERENCE score_pass_by_reference + +#undef TARGET_RETURN_IN_MEMORY +#define TARGET_RETURN_IN_MEMORY score_return_in_memory + +#undef TARGET_RTX_COSTS +#define TARGET_RTX_COSTS score_rtx_costs + +#undef TARGET_ADDRESS_COST +#define TARGET_ADDRESS_COST score_address_cost + +#undef TARGET_LEGITIMATE_ADDRESS_P +#define TARGET_LEGITIMATE_ADDRESS_P score_legitimate_address_p + +#undef TARGET_CAN_ELIMINATE +#define TARGET_CAN_ELIMINATE score_can_eliminate + +#undef TARGET_CONDITIONAL_REGISTER_USAGE +#define TARGET_CONDITIONAL_REGISTER_USAGE score_conditional_register_usage + +#undef TARGET_ASM_TRAMPOLINE_TEMPLATE +#define TARGET_ASM_TRAMPOLINE_TEMPLATE score_asm_trampoline_template +#undef TARGET_TRAMPOLINE_INIT +#define TARGET_TRAMPOLINE_INIT score_trampoline_init + +struct extern_list *extern_head = 0; + +/* default 0 = NO_REGS */ +enum reg_class score_char_to_class[256]; + +/* Implement TARGET_RETURN_IN_MEMORY. In S+core, + small structures are returned in a register. + Objects with varying size must still be returned in memory. */ +static bool +score_return_in_memory (const_tree type, const_tree fndecl ATTRIBUTE_UNUSED) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_return_in_memory (type, fndecl); + else + gcc_unreachable (); +} + +/* Return nonzero when an argument must be passed by reference. */ +static bool +score_pass_by_reference (CUMULATIVE_ARGS *cum ATTRIBUTE_UNUSED, + enum machine_mode mode, const_tree type, + bool named ATTRIBUTE_UNUSED) +{ + /* If we have a variable-sized parameter, we have no choice. */ + return targetm.calls.must_pass_in_stack (mode, type); +} + +/* Implement TARGET_ASM_OUTPUT_MI_THUNK. Generate rtl rather than asm text + in order to avoid duplicating too much logic from elsewhere. */ +static void +score_output_mi_thunk (FILE *file, tree thunk_fndecl ATTRIBUTE_UNUSED, + HOST_WIDE_INT delta, HOST_WIDE_INT vcall_offset, + tree function) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_output_mi_thunk (file, thunk_fndecl, delta, vcall_offset, function); + else + gcc_unreachable (); +} + +/* Implement TARGET_FUNCTION_OK_FOR_SIBCALL. */ +static bool +score_function_ok_for_sibcall (ATTRIBUTE_UNUSED tree decl, + ATTRIBUTE_UNUSED tree exp) +{ + return true; +} + +/* Set up the stack and frame (if desired) for the function. */ +static void +score_function_prologue (FILE *file, HOST_WIDE_INT size ATTRIBUTE_UNUSED) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_function_prologue (file, size); + else + gcc_unreachable (); +} + +/* Do any necessary cleanup after a function to restore stack, frame, + and regs. */ +static void +score_function_epilogue (FILE *file, + HOST_WIDE_INT size ATTRIBUTE_UNUSED) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_function_epilogue (file, size); + else + gcc_unreachable (); +} + +/* Implement TARGET_SCHED_ISSUE_RATE. */ +static int +score_issue_rate (void) +{ + return 1; +} + +/* Choose the section to use for the constant rtx expression X that has + mode MODE. */ +static section * +score_select_rtx_section (enum machine_mode mode, rtx x, + unsigned HOST_WIDE_INT align) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_select_rtx_section (mode, x, align); + else + gcc_unreachable (); +} + +/* Implement TARGET_IN_SMALL_DATA_P. */ +static bool +score_in_small_data_p (const_tree decl) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_in_small_data_p (decl); + else + gcc_unreachable (); +} + +/* Implement TARGET_ASM_FILE_START. */ +static void +score_asm_file_start (void) +{ + if (TARGET_SCORE7D) + fprintf (asm_out_file, "# Sunplus S+core7d %s rev=%s\n", + TARGET_LITTLE_ENDIAN ? "el" : "eb", SCORE_GCC_VERSION); + else if (TARGET_SCORE7) + fprintf (asm_out_file, "# Sunplus S+core7 %s rev=%s\n", + TARGET_LITTLE_ENDIAN ? "el" : "eb", SCORE_GCC_VERSION); + else + fprintf (asm_out_file, "# Sunplus S+core unknown %s rev=%s\n", + TARGET_LITTLE_ENDIAN ? "el" : "eb", SCORE_GCC_VERSION); + + default_file_start (); + + if (flag_pic) + fprintf (asm_out_file, "\t.set pic\n"); +} + +/* Implement TARGET_ASM_FILE_END. When using assembler macros, emit + .externs for any small-data variables that turned out to be external. */ +static void +score_asm_file_end (void) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_asm_file_end (); + else + gcc_unreachable (); +} + +#define MASK_ALL_CPU_BITS (MASK_SCORE7 | MASK_SCORE7D) + +/* Implement TARGET_HANDLE_OPTION. */ +static bool +score_handle_option (size_t code, const char *arg, int value ATTRIBUTE_UNUSED) +{ + switch (code) + { + case OPT_mscore7d: + target_flags &= ~(MASK_ALL_CPU_BITS); + target_flags |= MASK_SCORE7 | MASK_SCORE7D; + return true; + + case OPT_march_: + if (strcmp (arg, "score7") == 0) + { + target_flags &= ~(MASK_ALL_CPU_BITS); + target_flags |= MASK_SCORE7; + return true; + } + else if (strcmp (arg, "score7d") == 0) + { + target_flags &= ~(MASK_ALL_CPU_BITS); + target_flags |= MASK_SCORE7 | MASK_SCORE7D; + return true; + } + else + return false; + + default: + return true; + } +} + +/* Implement TARGET_OPTION_OVERRIDE hook. */ +static void +score_option_override (void) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_option_override (); +} + +/* Implement REGNO_REG_CLASS macro. */ +int +score_reg_class (int regno) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_reg_class (regno); + else + gcc_unreachable (); +} + +/* Implement PREFERRED_RELOAD_CLASS macro. */ +enum reg_class +score_preferred_reload_class (rtx x ATTRIBUTE_UNUSED, enum reg_class rclass) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_preferred_reload_class (x, rclass); + else + gcc_unreachable (); +} + +/* Implement SECONDARY_INPUT_RELOAD_CLASS + and SECONDARY_OUTPUT_RELOAD_CLASS macro. */ +enum reg_class +score_secondary_reload_class (enum reg_class rclass, + enum machine_mode mode ATTRIBUTE_UNUSED, + rtx x) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_secondary_reload_class (rclass, mode, x); + else + gcc_unreachable (); +} + + +/* Return truth value on whether or not a given hard register + can support a given mode. */ +int +score_hard_regno_mode_ok (unsigned int regno, enum machine_mode mode) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_hard_regno_mode_ok (regno, mode); + else + gcc_unreachable (); +} + +/* We can always eliminate to the hard frame pointer. We can eliminate + to the stack pointer unless a frame pointer is needed. */ + +static bool +score_can_eliminate (const int from ATTRIBUTE_UNUSED, const int to) +{ + return (to == HARD_FRAME_POINTER_REGNUM + || (to == STACK_POINTER_REGNUM && !frame_pointer_needed)); +} + +/* Implement INITIAL_ELIMINATION_OFFSET. FROM is either the frame + pointer or argument pointer. TO is either the stack pointer or + hard frame pointer. */ +HOST_WIDE_INT +score_initial_elimination_offset (int from, + int to ATTRIBUTE_UNUSED) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_initial_elimination_offset (from, to); + else + gcc_unreachable (); +} + +/* Argument support functions. */ + +/* Initialize CUMULATIVE_ARGS for a function. */ +void +score_init_cumulative_args (CUMULATIVE_ARGS *cum, + tree fntype ATTRIBUTE_UNUSED, + rtx libname ATTRIBUTE_UNUSED) +{ + memset (cum, 0, sizeof (CUMULATIVE_ARGS)); +} + +/* Implement TARGET_FUNCTION_ARG_ADVANCE hook. */ +static void +score_function_arg_advance (CUMULATIVE_ARGS *cum, enum machine_mode mode, + const_tree type, bool named) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_function_arg_advance (cum, mode, type, named); + else + gcc_unreachable (); +} + +/* Implement TARGET_ARG_PARTIAL_BYTES macro. */ +int +score_arg_partial_bytes (CUMULATIVE_ARGS *cum, + enum machine_mode mode, tree type, bool named) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_arg_partial_bytes (cum, mode, type, named); + else + gcc_unreachable (); +} + +/* Implement TARGET_FUNCTION_ARG hook. */ +static rtx +score_function_arg (CUMULATIVE_ARGS *cum, enum machine_mode mode, + const_tree type, bool named) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_function_arg (cum, mode, type, named); + else + gcc_unreachable (); +} + +/* Implement FUNCTION_VALUE and LIBCALL_VALUE. For normal calls, + VALTYPE is the return type and MODE is VOIDmode. For libcalls, + VALTYPE is null and MODE is the mode of the return value. */ +rtx +score_function_value (const_tree valtype, const_tree func ATTRIBUTE_UNUSED, + enum machine_mode mode) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_function_value (valtype, func, mode); + else + gcc_unreachable (); +} + +/* Implement TARGET_ASM_TRAMPOLINE_TEMPLATE. */ +static void +score_asm_trampoline_template (FILE *f) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_asm_trampoline_template (f); + else + gcc_unreachable (); +} + +/* Implement TARGET_TRAMPOLINE_INIT. */ +static void +score_trampoline_init (rtx m_tramp, tree fndecl, rtx chain_value) +{ + if ( TARGET_SCORE7 || TARGET_SCORE7D) + score7_trampoline_init (m_tramp, fndecl, chain_value); + else + gcc_unreachable (); +} + +/* This function is used to implement REG_MODE_OK_FOR_BASE_P macro. */ +int +score_regno_mode_ok_for_base_p (int regno, int strict) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_regno_mode_ok_for_base_p (regno, strict); + else + gcc_unreachable (); +} + +/* Implement TARGET_LEGITIMIZE_ADDRESS_P. */ +static bool +score_legitimate_address_p (enum machine_mode mode, rtx x, bool strict) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_legitimate_address_p (mode, x, strict); + else + gcc_unreachable (); +} + +/* This function is used to implement LEGITIMIZE_ADDRESS. If X can + be legitimized in a way that the generic machinery might not expect, + return the new address, else return X. */ +static rtx +score_legitimize_address (rtx x, rtx oldx ATTRIBUTE_UNUSED, + enum machine_mode mode ATTRIBUTE_UNUSED) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_legitimize_address (x); + else + gcc_unreachable (); +} + +/* Return a number assessing the cost of moving a register in class + FROM to class TO. */ +int +score_register_move_cost (enum machine_mode mode ATTRIBUTE_UNUSED, + enum reg_class from, enum reg_class to) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_register_move_cost (mode, from, to); + else + gcc_unreachable (); +} + +/* Implement TARGET_RTX_COSTS macro. */ +bool +score_rtx_costs (rtx x, int code, int outer_code, int *total, + bool speed ATTRIBUTE_UNUSED) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_rtx_costs (x, code, outer_code, total, speed); + else + gcc_unreachable (); +} + +/* Implement TARGET_ADDRESS_COST macro. */ +int +score_address_cost (rtx addr, + bool speed ATTRIBUTE_UNUSED) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_address_cost (addr); + else + gcc_unreachable (); +} + +/* Implement ASM_OUTPUT_EXTERNAL macro. */ +int +score_output_external (FILE *file ATTRIBUTE_UNUSED, + tree decl, const char *name) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_output_external (file, decl, name); + else + gcc_unreachable (); +} + +/* Implement RETURN_ADDR_RTX. Note, we do not support moving + back to a previous frame. */ +rtx +score_return_addr (int count, rtx frame ATTRIBUTE_UNUSED) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_return_addr (count, frame); + else + gcc_unreachable (); +} + +/* Implement PRINT_OPERAND macro. */ +void +score_print_operand (FILE *file, rtx op, int c) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_print_operand (file, op, c); + else + gcc_unreachable (); +} + +/* Implement PRINT_OPERAND_ADDRESS macro. */ +void +score_print_operand_address (FILE *file, rtx x) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_print_operand_address (file, x); + else + gcc_unreachable (); +} + +/* Implement SELECT_CC_MODE macro. */ +enum machine_mode +score_select_cc_mode (enum rtx_code op, rtx x, rtx y) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_select_cc_mode (op, x, y); + else + gcc_unreachable (); +} + +/* Return true if X is a symbolic constant that can be calculated in + the same way as a bare symbol. If it is, store the type of the + symbol in *SYMBOL_TYPE. */ +int +score_symbolic_constant_p (rtx x, enum score_symbol_type *symbol_type) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_symbolic_constant_p (x, symbol_type); + else + gcc_unreachable (); +} + +/* Generate the prologue instructions for entry into a S+core function. */ +void +score_prologue (void) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_prologue (); + else + gcc_unreachable (); +} + +/* Generate the epilogue instructions in a S+core function. */ +void +score_epilogue (int sibcall_p) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_epilogue (sibcall_p); + else + gcc_unreachable (); +} + +/* Call and sibcall pattern all need call this function. */ +void +score_call (rtx *ops, bool sib) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_call (ops, sib); + else + gcc_unreachable (); +} + +/* Call value and sibcall value pattern all need call this function. */ +void +score_call_value (rtx *ops, bool sib) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_call_value (ops, sib); + else + gcc_unreachable (); +} + +void +score_movsicc (rtx *ops) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_movsicc (ops); + else + gcc_unreachable (); +} + +/* Machine Split */ +void +score_movdi (rtx *ops) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_movdi (ops); + else + gcc_unreachable (); +} + +void +score_zero_extract_andi (rtx *ops) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + score7_zero_extract_andi (ops); + else + gcc_unreachable (); +} + +/* Output asm insn for move. */ +const char * +score_move (rtx *ops) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_move (ops); + else + gcc_unreachable (); +} + +/* Output asm insn for load. */ +const char * +score_linsn (rtx *ops, enum score_mem_unit unit, bool sign) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_linsn (ops, unit, sign); + else + gcc_unreachable (); +} + +/* Output asm insn for store. */ +const char * +score_sinsn (rtx *ops, enum score_mem_unit unit) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_sinsn (ops, unit); + else + gcc_unreachable (); +} + +/* Output asm insn for load immediate. */ +const char * +score_limm (rtx *ops) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_limm (ops); + else + gcc_unreachable (); +} + + +/* Generate add insn. */ +const char * +score_select_add_imm (rtx *ops, bool set_cc) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_select_add_imm (ops, set_cc); + else + gcc_unreachable (); +} + +/* Output arith insn. */ +const char * +score_select (rtx *ops, const char *inst_pre, + bool commu, const char *letter, bool set_cc) +{ + if (TARGET_SCORE7 || TARGET_SCORE7D) + return score7_select (ops, inst_pre, commu, letter, set_cc); + else + gcc_unreachable (); +} + +static void +score_conditional_register_usage (void) +{ + if (!flag_pic) + fixed_regs[PIC_OFFSET_TABLE_REGNUM] = + call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 0; +} + +struct gcc_target targetm = TARGET_INITIALIZER; |