X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Foutput.h;h=ae8404e7fe11dc8081e5ace592c10486264e1872;hp=53ed810972709c25e9eac1673ce588fdb0cd12c5;hb=5c6d2374f58e4e2944643b231a90a85c19b296aa;hpb=1f3233d13f58417984cb2239d328b65e8d172744 diff --git a/gcc/output.h b/gcc/output.h index 53ed8109727..ae8404e7fe1 100644 --- a/gcc/output.h +++ b/gcc/output.h @@ -1,13 +1,13 @@ /* Declarations for insn-output.c. These functions are defined in recog.c, final.c, and varasm.c. - Copyright (C) 1987, 1991, 1994, 1997, 1998, - 1999, 2000, 2001, 2002 Free Software Foundation, Inc. + Copyright (C) 1987, 1991, 1994, 1997, 1998, 1999, 2000, 2001, 2002, + 2003, 2004, 2005, 2006, 2007 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 2, or (at your option) any later +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 @@ -16,228 +16,146 @@ 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 COPYING. If not, write to the Free -Software Foundation, 59 Temple Place - Suite 330, Boston, MA -02111-1307, USA. */ +along with GCC; see the file COPYING3. If not see +. */ -/* Compute branch alignments based on frequency information in the CFG. */ -extern void compute_alignments PARAMS ((void)); +#ifndef GCC_OUTPUT_H +#define GCC_OUTPUT_H /* Initialize data in final at the beginning of a compilation. */ -extern void init_final PARAMS ((const char *)); - -/* Called at end of source file, - to output the block-profiling table for this entire compilation. */ -extern void end_final PARAMS ((const char *)); +extern void init_final (const char *); /* Enable APP processing of subsequent output. Used before the output from an `asm' statement. */ -extern void app_enable PARAMS ((void)); +extern void app_enable (void); /* Disable APP processing of subsequent output. Called from varasm.c before most kinds of output. */ -extern void app_disable PARAMS ((void)); +extern void app_disable (void); /* Return the number of slots filled in the current delayed branch sequence (we don't count the insn needing the delay slot). Zero if not in a delayed branch sequence. */ -extern int dbr_sequence_length PARAMS ((void)); +extern int dbr_sequence_length (void); /* Indicate that branch shortening hasn't yet been done. */ -extern void init_insn_lengths PARAMS ((void)); +extern void init_insn_lengths (void); -#ifdef RTX_CODE /* Obtain the current length of an insn. If branch shortening has been done, get its actual length. Otherwise, get its maximum length. */ -extern int get_attr_length PARAMS ((rtx)); +extern int get_attr_length (rtx); + +/* Obtain the current length of an insn. If branch shortening has been done, + get its actual length. Otherwise, get its minimum length. */ +extern int get_attr_min_length (rtx); /* Make a pass over all insns and compute their actual lengths by shortening any branches of variable length if possible. */ -extern void shorten_branches PARAMS ((rtx)); +extern void shorten_branches (rtx); /* Output assembler code for the start of a function, and initialize some of the variables in this file for the new function. The label for the function and associated assembler pseudo-ops have already been output in `assemble_start_function'. */ -extern void final_start_function PARAMS ((rtx, FILE *, int)); +extern void final_start_function (rtx, FILE *, int); /* Output assembler code for the end of a function. For clarity, args are same as those of `final_start_function' even though not all of them are needed. */ -extern void final_end_function PARAMS ((void)); +extern void final_end_function (void); /* Output assembler code for some insns: all or part of a function. */ -extern void final PARAMS ((rtx, FILE *, int, int)); +extern void final (rtx, FILE *, int); /* The final scan for one insn, INSN. Args are same as in `final', except that INSN is the insn being scanned. Value returned is the next insn to be scanned. */ -extern rtx final_scan_insn PARAMS ((rtx, FILE *, int, int, int)); +extern rtx final_scan_insn (rtx, FILE *, int, int, int *); /* Replace a SUBREG with a REG or a MEM, based on the thing it is a subreg of. */ -extern rtx alter_subreg PARAMS ((rtx *)); +extern rtx alter_subreg (rtx *); /* Report inconsistency between the assembler template and the operands. In an `asm', it's the user's fault; otherwise, the compiler's fault. */ -extern void output_operand_lossage PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1; +extern void output_operand_lossage (const char *, ...) ATTRIBUTE_PRINTF_1; /* Output a string of assembler code, substituting insn operands. Defined in final.c. */ -extern void output_asm_insn PARAMS ((const char *, rtx *)); +extern void output_asm_insn (const char *, rtx *); /* Compute a worst-case reference address of a branch so that it can be safely used in the presence of aligned labels. Defined in final.c. */ -extern int insn_current_reference_address PARAMS ((rtx)); +extern int insn_current_reference_address (rtx); /* Find the alignment associated with a CODE_LABEL. Defined in final.c. */ -extern int label_to_alignment PARAMS ((rtx)); +extern int label_to_alignment (rtx); /* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */ -extern void output_asm_label PARAMS ((rtx)); +extern void output_asm_label (rtx); /* Print a memory reference operand for address X using machine-dependent assembler syntax. */ -extern void output_address PARAMS ((rtx)); +extern void output_address (rtx); /* Print an integer constant expression in assembler syntax. Addition and subtraction are the only arithmetic that may appear in these expressions. */ -extern void output_addr_const PARAMS ((FILE *, rtx)); +extern void output_addr_const (FILE *, rtx); /* Output a string of assembler code, substituting numbers, strings and fixed syntactic prefixes. */ -extern void asm_fprintf PARAMS ((FILE *file, const char *p, ...)); +#if GCC_VERSION >= 3004 +#define ATTRIBUTE_ASM_FPRINTF(m, n) __attribute__ ((__format__ (__asm_fprintf__, m, n))) ATTRIBUTE_NONNULL(m) +/* This is a magic identifier which allows GCC to figure out the type + of HOST_WIDE_INT for %wd specifier checks. You must issue this + typedef before using the __asm_fprintf__ format attribute. */ +typedef HOST_WIDE_INT __gcc_host_wide_int__; +#else +#define ATTRIBUTE_ASM_FPRINTF(m, n) ATTRIBUTE_NONNULL(m) +#endif + +extern void asm_fprintf (FILE *file, const char *p, ...) + ATTRIBUTE_ASM_FPRINTF(2, 3); /* Split up a CONST_DOUBLE or integer constant rtx into two rtx's for single words. */ -extern void split_double PARAMS ((rtx, rtx *, rtx *)); +extern void split_double (rtx, rtx *, rtx *); /* Return nonzero if this function has no function calls. */ -extern int leaf_function_p PARAMS ((void)); +extern int leaf_function_p (void); -/* Return 1 if branch is an forward branch. +/* Return 1 if branch is a forward branch. Uses insn_shuid array, so it works only in the final pass. May be used by output templates to add branch prediction hints, for example. */ -extern int final_forward_branch_p PARAMS ((rtx)); +extern int final_forward_branch_p (rtx); /* Return 1 if this function uses only the registers that can be safely renumbered. */ -extern int only_leaf_regs_used PARAMS ((void)); +extern int only_leaf_regs_used (void); /* Scan IN_RTX and its subexpressions, and renumber all regs into those available in leaf functions. */ -extern void leaf_renumber_regs_insn PARAMS ((rtx)); +extern void leaf_renumber_regs_insn (rtx); /* Locate the proper template for the given insn-code. */ -extern const char *get_insn_template PARAMS ((int, rtx)); - -/* Add function NAME to the weak symbols list. VALUE is a weak alias - associated with NAME. */ -extern int add_weak PARAMS ((tree, const char *, const char *)); - -/* Functions in flow.c */ -extern void allocate_for_life_analysis PARAMS ((void)); -extern int regno_uninitialized PARAMS ((unsigned int)); -extern int regno_clobbered_at_setjmp PARAMS ((int)); -extern void find_basic_blocks PARAMS ((rtx, int, FILE *)); -extern bool cleanup_cfg PARAMS ((int)); -extern bool delete_unreachable_blocks PARAMS ((void)); -extern void check_function_return_warnings PARAMS ((void)); -#endif +extern const char *get_insn_template (int, rtx); /* Functions in varasm.c. */ -/* Tell assembler to switch to text section. */ -extern void text_section PARAMS ((void)); - -/* Tell assembler to switch to data section. */ -extern void data_section PARAMS ((void)); - -/* Tell assembler to make sure its in the data section. */ -extern void force_data_section PARAMS ((void)); - -/* Tell assembler to switch to read-only data section. This is normally - the text section. */ -extern void readonly_data_section PARAMS ((void)); - -/* Determine if we're in the text section. */ -extern int in_text_section PARAMS ((void)); - -#ifdef CTORS_SECTION_ASM_OP -extern void ctors_section PARAMS ((void)); -#endif - -#ifdef DTORS_SECTION_ASM_OP -extern void dtors_section PARAMS ((void)); -#endif - -#ifdef BSS_SECTION_ASM_OP -extern void bss_section PARAMS ((void)); -#endif - -#ifdef CONST_SECTION_ASM_OP -extern void const_section PARAMS ((void)); -#endif - -#ifdef INIT_SECTION_ASM_OP -extern void init_section PARAMS ((void)); -#endif - -#ifdef FINI_SECTION_ASM_OP -extern void fini_section PARAMS ((void)); -#endif - -#ifdef EXPORTS_SECTION_ASM_OP -extern void exports_section PARAMS ((void)); -#endif - -#ifdef TDESC_SECTION_ASM_OP -extern void tdesc_section PARAMS ((void)); -#endif - -#ifdef DRECTVE_SECTION_ASM_OP -extern void drectve_section PARAMS ((void)); -#endif - -#ifdef SDATA_SECTION_ASM_OP -extern void sdata_section PARAMS ((void)); -#endif - -#ifdef RDATA_SECTION_ASM_OP -extern void rdata_section PARAMS ((void)); -#endif - -#ifdef TREE_CODE -/* Tell assembler to change to section NAME for DECL. - If DECL is NULL, just switch to section NAME. - If NAME is NULL, get the name from DECL. - If RELOC is 1, the initializer for DECL contains relocs. */ -extern void named_section PARAMS ((tree, const char *, int)); - -/* Tell assembler to switch to the section for function DECL. */ -extern void function_section PARAMS ((tree)); - -/* Tell assembler to switch to the section for string merging. */ -extern void mergeable_string_section PARAMS ((tree, unsigned HOST_WIDE_INT, - unsigned int)); - -/* Tell assembler to switch to the section for constant merging. */ -extern void mergeable_constant_section PARAMS ((enum machine_mode, - unsigned HOST_WIDE_INT, - unsigned int)); - /* Declare DECL to be a weak symbol. */ -extern void declare_weak PARAMS ((tree)); +extern void declare_weak (tree); /* Merge weak status. */ -extern void merge_weak PARAMS ((tree, tree)); -#endif /* TREE_CODE */ +extern void merge_weak (tree, tree); /* Emit any pending weak declarations. */ -extern void weak_finish PARAMS ((void)); +extern void weak_finish (void); + +/* Emit any pending emutls declarations and initializations. */ +extern void emutls_finish (void); /* Decode an `asm' spec for a declaration as a register name. Return the register number, or -1 if nothing specified, @@ -246,33 +164,25 @@ extern void weak_finish PARAMS ((void)); or -4 if ASMSPEC is `memory' and is not recognized. Accept an exact spelling or a decimal number. Prefixes such as % are optional. */ -extern int decode_reg_name PARAMS ((const char *)); +extern int decode_reg_name (const char *); -#ifdef TREE_CODE -/* Make the rtl for variable VAR be volatile. - Use this only for static variables. */ -extern void make_var_volatile PARAMS ((tree)); +extern void assemble_alias (tree, tree); -/* Output alignment directive to align for constant expression EXP. */ -extern void assemble_constant_align PARAMS ((tree)); - -extern void assemble_alias PARAMS ((tree, tree)); - -extern void assemble_visibility PARAMS ((tree, const char *)); +extern void default_assemble_visibility (tree, int); /* Output a string of literal assembler code for an `asm' keyword used between functions. */ -extern void assemble_asm PARAMS ((tree)); +extern void assemble_asm (tree); /* Output assembler code for the constant pool of a function and associated with defining the name of the function. DECL describes the function. NAME is the function's name. For the constant pool, we use the current constant pool data. */ -extern void assemble_start_function PARAMS ((tree, const char *)); +extern void assemble_start_function (tree, const char *); /* Output assembler code associated with defining the size of the function. DECL describes the function. NAME is the function's name. */ -extern void assemble_end_function PARAMS ((tree, const char *)); +extern void assemble_end_function (tree, const char *); /* Assemble everything that is needed for a variable or function declaration. Not used for automatic variables, and not used for function definitions. @@ -283,42 +193,43 @@ extern void assemble_end_function PARAMS ((tree, const char *)); to define things that have had only tentative definitions. DONT_OUTPUT_DATA if nonzero means don't actually output the initial value (that will be done by the caller). */ -extern void assemble_variable PARAMS ((tree, int, int, int)); +extern void assemble_variable (tree, int, int, int); -/* Output something to declare an external symbol to the assembler. - (Most assemblers don't need this, so we normally output nothing.) - Do nothing if DECL is not external. */ -extern void assemble_external PARAMS ((tree)); -#endif /* TREE_CODE */ +/* Compute the alignment of variable specified by DECL. + DONT_OUTPUT_DATA is from assemble_variable. */ +extern void align_variable (tree decl, bool dont_output_data); + +/* Queue for outputting something to declare an external symbol to the + assembler. (Most assemblers don't need this, so we normally output + nothing.) Do nothing if DECL is not external. */ +extern void assemble_external (tree); /* Assemble code to leave SIZE bytes of zeros. */ -extern void assemble_zeros PARAMS ((int)); +extern void assemble_zeros (unsigned HOST_WIDE_INT); /* Assemble an alignment pseudo op for an ALIGN-bit boundary. */ -extern void assemble_align PARAMS ((int)); -extern void assemble_eh_align PARAMS ((int)); +extern void assemble_align (int); /* Assemble a string constant with the specified C string as contents. */ -extern void assemble_string PARAMS ((const char *, int)); +extern void assemble_string (const char *, int); -#ifdef RTX_CODE /* Similar, for calling a library function FUN. */ -extern void assemble_external_libcall PARAMS ((rtx)); -#endif - -/* Declare the label NAME global. */ -extern void assemble_global PARAMS ((const char *)); +extern void assemble_external_libcall (rtx); /* Assemble a label named NAME. */ -extern void assemble_label PARAMS ((const char *)); -extern void assemble_eh_label PARAMS ((const char *)); +extern void assemble_label (const char *); + +/* Output to FILE (an assembly file) a reference to NAME. If NAME + starts with a *, the rest of NAME is output verbatim. Otherwise + NAME is transformed in a target-specific way (usually by the + addition of an underscore). */ +extern void assemble_name_raw (FILE *, const char *); -/* Output to FILE a reference to the assembler name of a C-level name NAME. - If NAME starts with a *, the rest of NAME is output verbatim. - Otherwise NAME is transformed in an implementation-defined way - (usually by the addition of an underscore). - Many macros in the tm file are defined to call this function. */ -extern void assemble_name PARAMS ((FILE *, const char *)); +/* Like assemble_name_raw, but should be used when NAME might refer to + an entity that is also represented as a tree (like a function or + variable). If NAME does refer to such an entity, that entity will + be marked as referenced. */ +extern void assemble_name (FILE *, const char *); /* Return the assembler directive for creating a given kind of integer object. SIZE is the number of bytes in the object and ALIGNED_P @@ -327,21 +238,20 @@ extern void assemble_name PARAMS ((FILE *, const char *)); The returned string should be printed at the start of a new line and be followed immediately by the object's initial value. */ -extern const char *integer_asm_op PARAMS ((int, int)); +extern const char *integer_asm_op (int, int); -#ifdef RTX_CODE /* Use directive OP to assemble an integer object X. Print OP at the start of the line, followed immediately by the value of X. */ -extern void assemble_integer_with_op PARAMS ((const char *, rtx)); +extern void assemble_integer_with_op (const char *, rtx); /* The default implementation of the asm_out.integer target hook. */ -extern bool default_assemble_integer PARAMS ((rtx, unsigned int, int)); +extern bool default_assemble_integer (rtx, unsigned int, int); /* Assemble the integer constant X into an object of SIZE bytes. ALIGN is the alignment of the integer in bits. Return 1 if we were able to output - the constant, otherwise 0. If FORCE is non-zero, abort if we can't output - the constant. */ -extern bool assemble_integer PARAMS ((rtx, unsigned, unsigned, int)); + the constant, otherwise 0. If FORCE is nonzero the constant must + be outputable. */ +extern bool assemble_integer (rtx, unsigned, unsigned, int); /* An interface to assemble_integer for the common case in which a value is fully aligned and must be printed. VALUE is the value of the integer @@ -351,29 +261,29 @@ extern bool assemble_integer PARAMS ((rtx, unsigned, unsigned, int)); #ifdef REAL_VALUE_TYPE_SIZE /* Assemble the floating-point constant D into an object of size MODE. */ -extern void assemble_real PARAMS ((REAL_VALUE_TYPE, - enum machine_mode, - unsigned)); -#endif +extern void assemble_real (REAL_VALUE_TYPE, enum machine_mode, unsigned); #endif -/* Start deferring output of subconstants. */ -extern void defer_addressed_constants PARAMS ((void)); - -/* Stop deferring output of subconstants, - and output now all those that have been deferred. */ -extern void output_deferred_addressed_constants PARAMS ((void)); +/* Write the address of the entity given by SYMBOL to SEC. */ +extern void assemble_addr_to_section (rtx, section *); /* Return the size of the constant pool. */ -extern int get_pool_size PARAMS ((void)); +extern int get_pool_size (void); #ifdef HAVE_peephole -extern rtx peephole PARAMS ((rtx)); +extern rtx peephole (rtx); #endif -#ifdef TREE_CODE -/* Write all the constants in the constant pool. */ -extern void output_constant_pool PARAMS ((const char *, tree)); +extern void output_shared_constant_pool (void); + +extern void output_object_blocks (void); + +/* Whether a constructor CTOR is a valid static constant initializer if all + its elements are. This used to be internal to initializer_constant_valid_p + and has been exposed to let other functions like categorize_ctor_elements + evaluate the property while walking a constructor for other purposes. */ + +extern bool constructor_static_from_elts_p (const_tree); /* Return nonzero if VALUE is a valid constant-valued expression for use in initializing a static variable; one that can be an @@ -384,7 +294,7 @@ extern void output_constant_pool PARAMS ((const char *, tree)); We assume that VALUE has been folded as much as possible; therefore, we do not need to check for such things as arithmetic-combinations of integers. */ -extern tree initializer_constant_valid_p PARAMS ((tree, tree)); +extern tree initializer_constant_valid_p (tree, tree); /* Output assembler code for constant EXP to FILE, with no label. This includes the pseudo-op such as ".int" or ".byte", and a newline. @@ -394,11 +304,8 @@ extern tree initializer_constant_valid_p PARAMS ((tree, tree)); with zeros if necessary. SIZE must always be specified. ALIGN is the alignment in bits that may be assumed for the data. */ -extern void output_constant PARAMS ((tree, HOST_WIDE_INT, - unsigned int)); -#endif +extern void output_constant (tree, unsigned HOST_WIDE_INT, unsigned int); -#ifdef RTX_CODE /* When outputting delayed branch sequences, this rtx holds the sequence being output. It is null when no delayed branch sequence is being output, so it can be used as a test in the @@ -406,7 +313,6 @@ extern void output_constant PARAMS ((tree, HOST_WIDE_INT, This variable is defined in final.c. */ extern rtx final_sequence; -#endif /* The line number of the beginning of the current function. Various md code needs this so that it can output relative linenumbers. */ @@ -434,14 +340,9 @@ extern const char *weak_global_object_name; extern int current_function_is_leaf; -/* Nonzero if function being compiled doesn't contain any instructions - that can throw an exception. This is set prior to final. */ - -extern int current_function_nothrow; - /* Nonzero if function being compiled doesn't modify the stack pointer (ignoring the prologue and epilogue). This is only valid after - life_analysis has run. */ + pass_stack_ptr_mod has run. */ extern int current_function_sp_is_unchanging; @@ -454,47 +355,45 @@ extern int current_function_uses_only_leaf_regs; /* Default file in which to dump debug output. */ #ifdef BUFSIZ -extern FILE *rtl_dump_file; +extern FILE *dump_file; #endif /* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */ -extern struct rtx_def *current_insn_predicate; +extern rtx current_insn_predicate; /* Last insn processed by final_scan_insn. */ -extern struct rtx_def *current_output_insn; +extern rtx current_output_insn; /* Nonzero while outputting an `asm' with operands. - This means that inconsistencies are the user's fault, so don't abort. + This means that inconsistencies are the user's fault, so don't die. The precise value is the insn being output, to pass to error_for_asm. */ extern rtx this_is_asm_operands; -/* Decide whether DECL needs to be in a writable section. RELOC is the same - as for SELECT_SECTION. */ +/* Carry information from ASM_DECLARE_OBJECT_NAME + to ASM_FINISH_DECLARE_OBJECT. */ +extern int size_directive_output; +extern tree last_assemble_variable_decl; -#define DECL_READONLY_SECTION(DECL,RELOC) \ - (TREE_READONLY (DECL) \ - && ! TREE_THIS_VOLATILE (DECL) \ - && DECL_INITIAL (DECL) \ - && (DECL_INITIAL (DECL) == error_mark_node \ - || TREE_CONSTANT (DECL_INITIAL (DECL))) \ - && ! (RELOC && (flag_pic || DECL_ONE_ONLY (DECL)))) +extern bool first_function_block_is_cold; + +/* Decide whether DECL needs to be in a writable section. + RELOC is the same as for SELECT_SECTION. */ +extern bool decl_readonly_section (const_tree, int); + +/* This can be used to compute RELOC for the function above, when + given a constant expression. */ +extern int compute_reloc_for_constant (tree); /* User label prefix in effect for this compilation. */ extern const char *user_label_prefix; /* Default target function prologue and epilogue assembler output. */ -extern void default_function_pro_epilogue PARAMS ((FILE *, HOST_WIDE_INT)); - -/* Tell assembler to switch to the section for the exception table. */ -extern void default_exception_section PARAMS ((void)); - -/* Tell assembler to switch to the section for the EH frames. */ -extern void default_eh_frame_section PARAMS ((void)); +extern void default_function_pro_epilogue (FILE *, HOST_WIDE_INT); /* Default target hook that outputs nothing to a stream. */ -extern void no_asm_to_stream PARAMS ((FILE *)); +extern void no_asm_to_stream (FILE *); -/* Flags controling properties of a section. */ +/* Flags controlling properties of a section. */ #define SECTION_ENTSIZE 0x000ff /* entity size in section */ #define SECTION_CODE 0x00100 /* contains code */ #define SECTION_WRITE 0x00200 /* data is writable */ @@ -508,47 +407,237 @@ extern void no_asm_to_stream PARAMS ((FILE *)); embedded zeros */ #define SECTION_OVERRIDE 0x20000 /* allow override of default flags */ #define SECTION_TLS 0x40000 /* contains thread-local storage */ -#define SECTION_MACH_DEP 0x80000 /* subsequent bits reserved for target */ - -extern unsigned int get_named_section_flags PARAMS ((const char *)); -extern bool set_named_section_flags PARAMS ((const char *, unsigned int)); -extern void named_section_flags PARAMS ((const char *, unsigned int)); -extern bool named_section_first_declaration PARAMS((const char *)); - -union tree_node; -extern unsigned int default_section_type_flags PARAMS ((union tree_node *, - const char *, int)); - -extern void default_no_named_section PARAMS ((const char *, unsigned int)); -extern void default_elf_asm_named_section PARAMS ((const char *, unsigned int)); -extern void default_coff_asm_named_section PARAMS ((const char *, - unsigned int)); -extern void default_pe_asm_named_section PARAMS ((const char *, unsigned int)); - -extern void default_stabs_asm_out_destructor PARAMS ((struct rtx_def *, int)); -extern void default_named_section_asm_out_destructor PARAMS ((struct rtx_def *, - int)); -extern void default_dtor_section_asm_out_destructor PARAMS ((struct rtx_def *, - int)); -extern void default_stabs_asm_out_constructor PARAMS ((struct rtx_def *, int)); -extern void default_named_section_asm_out_constructor PARAMS ((struct rtx_def *, - int)); -extern void default_ctor_section_asm_out_constructor PARAMS ((struct rtx_def *, - int)); - -extern void default_select_section PARAMS ((tree, int, - unsigned HOST_WIDE_INT)); -extern void default_elf_select_section PARAMS ((tree, int, - unsigned HOST_WIDE_INT)); -extern void default_unique_section PARAMS ((tree, int)); -extern void default_select_rtx_section PARAMS ((enum machine_mode, rtx, - unsigned HOST_WIDE_INT)); -extern void default_elf_select_rtx_section PARAMS ((enum machine_mode, rtx, - unsigned HOST_WIDE_INT)); -extern const char *default_strip_name_encoding PARAMS ((const char *)); -extern bool default_binds_local_p PARAMS ((tree)); - -/* Emit data for vtable gc for GNU binutils. */ -extern void assemble_vtable_entry PARAMS ((struct rtx_def *, HOST_WIDE_INT)); -extern void assemble_vtable_inherit PARAMS ((struct rtx_def *, - struct rtx_def *)); +#define SECTION_NOTYPE 0x80000 /* don't output @progbits */ +#define SECTION_DECLARED 0x100000 /* section has been used */ +#define SECTION_STYLE_MASK 0x600000 /* bits used for SECTION_STYLE */ +#define SECTION_COMMON 0x800000 /* contains common data */ +#define SECTION_MACH_DEP 0x1000000 /* subsequent bits reserved for target */ + +/* This SECTION_STYLE is used for unnamed sections that we can switch + to using a special assembler directive. */ +#define SECTION_UNNAMED 0x000000 + +/* This SECTION_STYLE is used for named sections that we can switch + to using a general section directive. */ +#define SECTION_NAMED 0x200000 + +/* This SECTION_STYLE is used for sections that we cannot switch to at + all. The choice of section is implied by the directive that we use + to declare the object. */ +#define SECTION_NOSWITCH 0x400000 + +/* A helper function for default_elf_select_section and + default_elf_unique_section. Categorizes the DECL. */ + +enum section_category +{ + SECCAT_TEXT, + + SECCAT_RODATA, + SECCAT_RODATA_MERGE_STR, + SECCAT_RODATA_MERGE_STR_INIT, + SECCAT_RODATA_MERGE_CONST, + SECCAT_SRODATA, + + SECCAT_DATA, + + /* To optimize loading of shared programs, define following subsections + of data section: + _REL Contains data that has relocations, so they get grouped + together and dynamic linker will visit fewer pages in memory. + _RO Contains data that is otherwise read-only. This is useful + with prelinking as most relocations won't be dynamically + linked and thus stay read only. + _LOCAL Marks data containing relocations only to local objects. + These relocations will get fully resolved by prelinking. */ + SECCAT_DATA_REL, + SECCAT_DATA_REL_LOCAL, + SECCAT_DATA_REL_RO, + SECCAT_DATA_REL_RO_LOCAL, + + SECCAT_SDATA, + SECCAT_TDATA, + + SECCAT_BSS, + SECCAT_SBSS, + SECCAT_TBSS +}; + +/* Information that is provided by all instances of the section type. */ +struct section_common GTY(()) { + /* The set of SECTION_* flags that apply to this section. */ + unsigned int flags; +}; + +/* Information about a SECTION_NAMED section. */ +struct named_section GTY(()) { + struct section_common common; + + /* The name of the section. */ + const char *name; + + /* If nonnull, the VAR_DECL or FUNCTION_DECL with which the + section is associated. */ + tree decl; +}; + +/* A callback that writes the assembly code for switching to an unnamed + section. The argument provides callback-specific data. */ +typedef void (*unnamed_section_callback) (const void *); + +/* Information about a SECTION_UNNAMED section. */ +struct unnamed_section GTY(()) { + struct section_common common; + + /* The callback used to switch to the section, and the data that + should be passed to the callback. */ + unnamed_section_callback GTY ((skip)) callback; + const void *GTY ((skip)) data; + + /* The next entry in the chain of unnamed sections. */ + section *next; +}; + +/* A callback that writes the assembly code for a decl in a + SECTION_NOSWITCH section. DECL is the decl that should be assembled + and NAME is the name of its SYMBOL_REF. SIZE is the size of the decl + in bytes and ROUNDED is that size rounded up to the next + BIGGEST_ALIGNMENT / BITS_PER_UNIT boundary. + + Return true if the callback used DECL_ALIGN to set the object's + alignment. A false return value implies that we are relying + on the rounded size to align the decl. */ +typedef bool (*noswitch_section_callback) (tree decl, const char *name, + unsigned HOST_WIDE_INT size, + unsigned HOST_WIDE_INT rounded); + +/* Information about a SECTION_NOSWITCH section. */ +struct noswitch_section GTY(()) { + struct section_common common; + + /* The callback used to assemble decls in this section. */ + noswitch_section_callback GTY ((skip)) callback; +}; + +/* Information about a section, which may be named or unnamed. */ +union section GTY ((desc ("SECTION_STYLE (&(%h))"))) +{ + struct section_common GTY ((skip)) common; + struct named_section GTY ((tag ("SECTION_NAMED"))) named; + struct unnamed_section GTY ((tag ("SECTION_UNNAMED"))) unnamed; + struct noswitch_section GTY ((tag ("SECTION_NOSWITCH"))) noswitch; +}; + +/* Return the style of section SECT. */ +#define SECTION_STYLE(SECT) ((SECT)->common.flags & SECTION_STYLE_MASK) + +struct object_block; + +/* Special well-known sections. */ +extern GTY(()) section *text_section; +extern GTY(()) section *data_section; +extern GTY(()) section *readonly_data_section; +extern GTY(()) section *sdata_section; +extern GTY(()) section *ctors_section; +extern GTY(()) section *dtors_section; +extern GTY(()) section *bss_section; +extern GTY(()) section *sbss_section; +extern GTY(()) section *exception_section; +extern GTY(()) section *eh_frame_section; +extern GTY(()) section *tls_comm_section; +extern GTY(()) section *comm_section; +extern GTY(()) section *lcomm_section; +extern GTY(()) section *bss_noswitch_section; + +extern GTY(()) section *in_section; +extern GTY(()) bool in_cold_section_p; + +extern section *get_unnamed_section (unsigned int, void (*) (const void *), + const void *); +extern section *get_section (const char *, unsigned int, tree); +extern section *get_named_section (tree, const char *, int); +extern void place_block_symbol (rtx); +extern rtx get_section_anchor (struct object_block *, HOST_WIDE_INT, + enum tls_model); +extern section *mergeable_constant_section (enum machine_mode, + unsigned HOST_WIDE_INT, + unsigned int); +extern section *function_section (tree); +extern section *unlikely_text_section (void); +extern section *current_function_section (void); + +/* Return the numbered .ctors.N (if CONSTRUCTOR_P) or .dtors.N (if + not) section for PRIORITY. */ +extern section *get_cdtor_priority_section (int, bool); + +extern bool unlikely_text_section_p (section *); +extern void switch_to_section (section *); +extern void output_section_asm_op (const void *); + +extern unsigned int default_section_type_flags (tree, const char *, int); + +extern bool have_global_bss_p (void); +extern void default_no_named_section (const char *, unsigned int, tree); +extern void default_elf_asm_named_section (const char *, unsigned int, tree); +extern enum section_category categorize_decl_for_section (const_tree, int); +extern void default_coff_asm_named_section (const char *, unsigned int, tree); +extern void default_pe_asm_named_section (const char *, unsigned int, tree); + +extern void default_stabs_asm_out_destructor (rtx, int); +extern void default_named_section_asm_out_destructor (rtx, int); +extern void default_dtor_section_asm_out_destructor (rtx, int); +extern void default_stabs_asm_out_constructor (rtx, int); +extern void default_named_section_asm_out_constructor (rtx, int); +extern void default_ctor_section_asm_out_constructor (rtx, int); + +extern section *default_select_section (tree, int, unsigned HOST_WIDE_INT); +extern section *default_elf_select_section (tree, int, unsigned HOST_WIDE_INT); +extern void default_unique_section (tree, int); +extern section *default_function_rodata_section (tree); +extern section *default_no_function_rodata_section (tree); +extern section *default_select_rtx_section (enum machine_mode, rtx, + unsigned HOST_WIDE_INT); +extern section *default_elf_select_rtx_section (enum machine_mode, rtx, + unsigned HOST_WIDE_INT); +extern void default_encode_section_info (tree, rtx, int); +extern const char *default_strip_name_encoding (const char *); +extern void default_asm_output_anchor (rtx); +extern bool default_use_anchors_for_symbol_p (const_rtx); +extern bool default_binds_local_p (const_tree); +extern bool default_binds_local_p_1 (const_tree, int); +extern void default_globalize_label (FILE *, const char *); +extern void default_globalize_decl_name (FILE *, tree); +extern void default_emit_unwind_label (FILE *, tree, int, int); +extern void default_emit_except_table_label (FILE *); +extern void default_internal_label (FILE *, const char *, unsigned long); +extern void default_file_start (void); +extern void file_end_indicate_exec_stack (void); +extern bool default_valid_pointer_mode (enum machine_mode); + +extern void default_elf_asm_output_external (FILE *file, tree, + const char *); +extern int maybe_assemble_visibility (tree); + +extern int default_address_cost (rtx); + +/* dbxout helper functions */ +#if defined DBX_DEBUGGING_INFO || defined XCOFF_DEBUGGING_INFO + +extern void dbxout_int (int); +extern void dbxout_stabd (int, int); +extern void dbxout_begin_stabn (int); +extern void dbxout_begin_stabn_sline (int); +extern void dbxout_begin_empty_stabs (int); +extern void dbxout_begin_simple_stabs (const char *, int); +extern void dbxout_begin_simple_stabs_desc (const char *, int, int); + +extern void dbxout_stab_value_zero (void); +extern void dbxout_stab_value_label (const char *); +extern void dbxout_stab_value_label_diff (const char *, const char *); +extern void dbxout_stab_value_internal_label (const char *, int *); +extern void dbxout_stab_value_internal_label_diff (const char *, int *, + const char *); + +#endif + +#endif /* ! GCC_OUTPUT_H */