output.h revision 90075
118334Speter/* Declarations for insn-output.c. These functions are defined in recog.c, 218334Speter final.c, and varasm.c. 390075Sobrien Copyright (C) 1987, 1991, 1994, 1997, 1998, 490075Sobrien 1999, 2000, 2001 Free Software Foundation, Inc. 518334Speter 690075SobrienThis file is part of GCC. 718334Speter 890075SobrienGCC is free software; you can redistribute it and/or modify it under 990075Sobrienthe terms of the GNU General Public License as published by the Free 1090075SobrienSoftware Foundation; either version 2, or (at your option) any later 1190075Sobrienversion. 1218334Speter 1390075SobrienGCC is distributed in the hope that it will be useful, but WITHOUT ANY 1490075SobrienWARRANTY; without even the implied warranty of MERCHANTABILITY or 1590075SobrienFITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1690075Sobrienfor more details. 1718334Speter 1818334SpeterYou should have received a copy of the GNU General Public License 1990075Sobrienalong with GCC; see the file COPYING. If not, write to the Free 2090075SobrienSoftware Foundation, 59 Temple Place - Suite 330, Boston, MA 2190075Sobrien02111-1307, USA. */ 2218334Speter 2390075Sobrien/* Compute branch alignments based on frequency information in the CFG. */ 2490075Sobrienextern void compute_alignments PARAMS ((void)); 2590075Sobrien 2618334Speter/* Initialize data in final at the beginning of a compilation. */ 2790075Sobrienextern void init_final PARAMS ((const char *)); 2818334Speter 2918334Speter/* Called at end of source file, 3018334Speter to output the block-profiling table for this entire compilation. */ 3190075Sobrienextern void end_final PARAMS ((const char *)); 3218334Speter 3318334Speter/* Enable APP processing of subsequent output. 3418334Speter Used before the output from an `asm' statement. */ 3590075Sobrienextern void app_enable PARAMS ((void)); 3618334Speter 3718334Speter/* Disable APP processing of subsequent output. 3818334Speter Called from varasm.c before most kinds of output. */ 3990075Sobrienextern void app_disable PARAMS ((void)); 4018334Speter 4190075Sobrien/* Return the number of slots filled in the current 4218334Speter delayed branch sequence (we don't count the insn needing the 4318334Speter delay slot). Zero if not in a delayed branch sequence. */ 4490075Sobrienextern int dbr_sequence_length PARAMS ((void)); 4518334Speter 4618334Speter/* Indicate that branch shortening hasn't yet been done. */ 4790075Sobrienextern void init_insn_lengths PARAMS ((void)); 4818334Speter 4918334Speter#ifdef RTX_CODE 5018334Speter/* Obtain the current length of an insn. If branch shortening has been done, 5118334Speter get its actual length. Otherwise, get its maximum length. */ 5290075Sobrienextern int get_attr_length PARAMS ((rtx)); 5318334Speter 5418334Speter/* Make a pass over all insns and compute their actual lengths by shortening 5518334Speter any branches of variable length if possible. */ 5690075Sobrienextern void shorten_branches PARAMS ((rtx)); 5718334Speter 5818334Speter/* Output assembler code for the start of a function, 5918334Speter and initialize some of the variables in this file 6018334Speter for the new function. The label for the function and associated 6118334Speter assembler pseudo-ops have already been output in 6218334Speter `assemble_start_function'. */ 6390075Sobrienextern void final_start_function PARAMS ((rtx, FILE *, int)); 6418334Speter 6518334Speter/* Output assembler code for the end of a function. 6618334Speter For clarity, args are same as those of `final_start_function' 6718334Speter even though not all of them are needed. */ 6890075Sobrienextern void final_end_function PARAMS ((void)); 6918334Speter 7018334Speter/* Output assembler code for some insns: all or part of a function. */ 7190075Sobrienextern void final PARAMS ((rtx, FILE *, int, int)); 7218334Speter 7318334Speter/* The final scan for one insn, INSN. Args are same as in `final', except 7418334Speter that INSN is the insn being scanned. Value returned is the next insn to 7518334Speter be scanned. */ 7690075Sobrienextern rtx final_scan_insn PARAMS ((rtx, FILE *, int, int, int)); 7718334Speter 7818334Speter/* Replace a SUBREG with a REG or a MEM, based on the thing it is a 7918334Speter subreg of. */ 8090075Sobrienextern rtx alter_subreg PARAMS ((rtx *)); 8118334Speter 8218334Speter/* Report inconsistency between the assembler template and the operands. 8318334Speter In an `asm', it's the user's fault; otherwise, the compiler's fault. */ 8490075Sobrienextern void output_operand_lossage PARAMS ((const char *)); 8518334Speter 8618334Speter/* Output a string of assembler code, substituting insn operands. 8718334Speter Defined in final.c. */ 8890075Sobrienextern void output_asm_insn PARAMS ((const char *, rtx *)); 8918334Speter 9050397Sobrien/* Compute a worst-case reference address of a branch so that it 9150397Sobrien can be safely used in the presence of aligned labels. 9250397Sobrien Defined in final.c. */ 9390075Sobrienextern int insn_current_reference_address PARAMS ((rtx)); 9450397Sobrien 9552284Sobrien/* Find the alignment associated with a CODE_LABEL. 9652284Sobrien Defined in final.c. */ 9790075Sobrienextern int label_to_alignment PARAMS ((rtx)); 9852284Sobrien 9918334Speter/* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */ 10090075Sobrienextern void output_asm_label PARAMS ((rtx)); 10118334Speter 10218334Speter/* Print a memory reference operand for address X 10318334Speter using machine-dependent assembler syntax. */ 10490075Sobrienextern void output_address PARAMS ((rtx)); 10518334Speter 10618334Speter/* Print an integer constant expression in assembler syntax. 10718334Speter Addition and subtraction are the only arithmetic 10818334Speter that may appear in these expressions. */ 10990075Sobrienextern void output_addr_const PARAMS ((FILE *, rtx)); 11018334Speter 11118334Speter/* Output a string of assembler code, substituting numbers, strings 11218334Speter and fixed syntactic prefixes. */ 11390075Sobrienextern void asm_fprintf PARAMS ((FILE *file, const char *p, ...)); 11418334Speter 11518334Speter/* Split up a CONST_DOUBLE or integer constant rtx into two rtx's for single 11618334Speter words. */ 11790075Sobrienextern void split_double PARAMS ((rtx, rtx *, rtx *)); 11818334Speter 11918334Speter/* Return nonzero if this function has no function calls. */ 12090075Sobrienextern int leaf_function_p PARAMS ((void)); 12118334Speter 12290075Sobrien/* Return 1 if branch is an forward branch. 12390075Sobrien Uses insn_shuid array, so it works only in the final pass. May be used by 12490075Sobrien output templates to add branch prediction hints, for example. */ 12590075Sobrienextern int final_forward_branch_p PARAMS ((rtx)); 12690075Sobrien 12718334Speter/* Return 1 if this function uses only the registers that can be 12818334Speter safely renumbered. */ 12990075Sobrienextern int only_leaf_regs_used PARAMS ((void)); 13018334Speter 13118334Speter/* Scan IN_RTX and its subexpressions, and renumber all regs into those 13218334Speter available in leaf functions. */ 13390075Sobrienextern void leaf_renumber_regs_insn PARAMS ((rtx)); 13450397Sobrien 13590075Sobrien/* Locate the proper template for the given insn-code. */ 13690075Sobrienextern const char *get_insn_template PARAMS ((int, rtx)); 13790075Sobrien 13890075Sobrien/* Add function NAME to the weak symbols list. VALUE is a weak alias 13990075Sobrien associated with NAME. */ 14090075Sobrienextern int add_weak PARAMS ((const char *, const char *)); 14190075Sobrien 14250397Sobrien/* Functions in flow.c */ 14390075Sobrienextern void allocate_for_life_analysis PARAMS ((void)); 14490075Sobrienextern int regno_uninitialized PARAMS ((unsigned int)); 14590075Sobrienextern int regno_clobbered_at_setjmp PARAMS ((int)); 14690075Sobrienextern void find_basic_blocks PARAMS ((rtx, int, FILE *)); 14790075Sobrienextern bool cleanup_cfg PARAMS ((int)); 14890075Sobrienextern void check_function_return_warnings PARAMS ((void)); 14918334Speter#endif 15018334Speter 15118334Speter/* Functions in varasm.c. */ 15218334Speter 15318334Speter/* Tell assembler to switch to text section. */ 15490075Sobrienextern void text_section PARAMS ((void)); 15518334Speter 15618334Speter/* Tell assembler to switch to data section. */ 15790075Sobrienextern void data_section PARAMS ((void)); 15818334Speter 15952284Sobrien/* Tell assembler to make sure its in the data section. */ 16090075Sobrienextern void force_data_section PARAMS ((void)); 16152284Sobrien 16218334Speter/* Tell assembler to switch to read-only data section. This is normally 16318334Speter the text section. */ 16490075Sobrienextern void readonly_data_section PARAMS ((void)); 16518334Speter 16690075Sobrien/* Determine if we're in the text section. */ 16790075Sobrienextern int in_text_section PARAMS ((void)); 16818334Speter 16990075Sobrien#ifdef CTORS_SECTION_ASM_OP 17090075Sobrienextern void ctors_section PARAMS ((void)); 17150397Sobrien#endif 17250397Sobrien 17390075Sobrien#ifdef DTORS_SECTION_ASM_OP 17490075Sobrienextern void dtors_section PARAMS ((void)); 17590075Sobrien#endif 17690075Sobrien 17790075Sobrien#ifdef BSS_SECTION_ASM_OP 17890075Sobrienextern void bss_section PARAMS ((void)); 17990075Sobrien#endif 18090075Sobrien 18190075Sobrien#ifdef CONST_SECTION_ASM_OP 18290075Sobrienextern void const_section PARAMS ((void)); 18390075Sobrien#endif 18490075Sobrien 18590075Sobrien#ifdef INIT_SECTION_ASM_OP 18690075Sobrienextern void init_section PARAMS ((void)); 18790075Sobrien#endif 18890075Sobrien 18990075Sobrien#ifdef FINI_SECTION_ASM_OP 19090075Sobrienextern void fini_section PARAMS ((void)); 19190075Sobrien#endif 19290075Sobrien 19390075Sobrien#ifdef EXPORTS_SECTION_ASM_OP 19490075Sobrienextern void exports_section PARAMS ((void)); 19590075Sobrien#endif 19690075Sobrien 19790075Sobrien#ifdef TDESC_SECTION_ASM_OP 19890075Sobrienextern void tdesc_section PARAMS ((void)); 19990075Sobrien#endif 20090075Sobrien 20190075Sobrien#ifdef DRECTVE_SECTION_ASM_OP 20290075Sobrienextern void drectve_section PARAMS ((void)); 20390075Sobrien#endif 20490075Sobrien 20590075Sobrien#ifdef SDATA_SECTION_ASM_OP 20690075Sobrienextern void sdata_section PARAMS ((void)); 20790075Sobrien#endif 20890075Sobrien 20990075Sobrien#ifdef RDATA_SECTION_ASM_OP 21090075Sobrienextern void rdata_section PARAMS ((void)); 21190075Sobrien#endif 21290075Sobrien 21318334Speter#ifdef TREE_CODE 21418334Speter/* Tell assembler to change to section NAME for DECL. 21518334Speter If DECL is NULL, just switch to section NAME. 21650397Sobrien If NAME is NULL, get the name from DECL. 21750397Sobrien If RELOC is 1, the initializer for DECL contains relocs. */ 21890075Sobrienextern void named_section PARAMS ((tree, const char *, int)); 21918334Speter 22018334Speter/* Tell assembler to switch to the section for function DECL. */ 22190075Sobrienextern void function_section PARAMS ((tree)); 22218334Speter 22390075Sobrien/* Tell assembler to switch to the section for string merging. */ 22490075Sobrienextern void mergeable_string_section PARAMS ((tree, unsigned HOST_WIDE_INT, 22590075Sobrien unsigned int)); 22650397Sobrien 22790075Sobrien/* Tell assembler to switch to the section for constant merging. */ 22890075Sobrienextern void mergeable_constant_section PARAMS ((enum machine_mode, 22990075Sobrien unsigned HOST_WIDE_INT, 23090075Sobrien unsigned int)); 23118334Speter 23250397Sobrien/* Declare DECL to be a weak symbol. */ 23390075Sobrienextern void declare_weak PARAMS ((tree)); 23450397Sobrien#endif /* TREE_CODE */ 23550397Sobrien 23650397Sobrien/* Emit any pending weak declarations. */ 23790075Sobrienextern void weak_finish PARAMS ((void)); 23850397Sobrien 23918334Speter/* Decode an `asm' spec for a declaration as a register name. 24018334Speter Return the register number, or -1 if nothing specified, 24118334Speter or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized, 24218334Speter or -3 if ASMSPEC is `cc' and is not recognized, 24318334Speter or -4 if ASMSPEC is `memory' and is not recognized. 24418334Speter Accept an exact spelling or a decimal number. 24518334Speter Prefixes such as % are optional. */ 24690075Sobrienextern int decode_reg_name PARAMS ((const char *)); 24718334Speter 24850397Sobrien#ifdef TREE_CODE 24918334Speter/* Make the rtl for variable VAR be volatile. 25018334Speter Use this only for static variables. */ 25190075Sobrienextern void make_var_volatile PARAMS ((tree)); 25218334Speter 25318334Speter/* Output alignment directive to align for constant expression EXP. */ 25490075Sobrienextern void assemble_constant_align PARAMS ((tree)); 25518334Speter 25690075Sobrienextern void assemble_alias PARAMS ((tree, tree)); 25750397Sobrien 25818334Speter/* Output a string of literal assembler code 25918334Speter for an `asm' keyword used between functions. */ 26090075Sobrienextern void assemble_asm PARAMS ((tree)); 26118334Speter 26218334Speter/* Output assembler code for the constant pool of a function and associated 26318334Speter with defining the name of the function. DECL describes the function. 26418334Speter NAME is the function's name. For the constant pool, we use the current 26518334Speter constant pool data. */ 26690075Sobrienextern void assemble_start_function PARAMS ((tree, const char *)); 26718334Speter 26818334Speter/* Output assembler code associated with defining the size of the 26918334Speter function. DECL describes the function. NAME is the function's name. */ 27090075Sobrienextern void assemble_end_function PARAMS ((tree, const char *)); 27118334Speter 27218334Speter/* Assemble everything that is needed for a variable or function declaration. 27318334Speter Not used for automatic variables, and not used for function definitions. 27418334Speter Should not be called for variables of incomplete structure type. 27518334Speter 27618334Speter TOP_LEVEL is nonzero if this variable has file scope. 27718334Speter AT_END is nonzero if this is the special handling, at end of compilation, 27818334Speter to define things that have had only tentative definitions. 27918334Speter DONT_OUTPUT_DATA if nonzero means don't actually output the 28018334Speter initial value (that will be done by the caller). */ 28190075Sobrienextern void assemble_variable PARAMS ((tree, int, int, int)); 28218334Speter 28318334Speter/* Output something to declare an external symbol to the assembler. 28418334Speter (Most assemblers don't need this, so we normally output nothing.) 28518334Speter Do nothing if DECL is not external. */ 28690075Sobrienextern void assemble_external PARAMS ((tree)); 28750397Sobrien#endif /* TREE_CODE */ 28818334Speter 28990075Sobrien/* Assemble code to leave SIZE bytes of zeros. */ 29090075Sobrienextern void assemble_zeros PARAMS ((int)); 29190075Sobrien 29290075Sobrien/* Assemble an alignment pseudo op for an ALIGN-bit boundary. */ 29390075Sobrienextern void assemble_align PARAMS ((int)); 29490075Sobrienextern void assemble_eh_align PARAMS ((int)); 29590075Sobrien 29690075Sobrien/* Assemble a string constant with the specified C string as contents. */ 29790075Sobrienextern void assemble_string PARAMS ((const char *, int)); 29890075Sobrien 29918334Speter#ifdef RTX_CODE 30018334Speter/* Similar, for calling a library function FUN. */ 30190075Sobrienextern void assemble_external_libcall PARAMS ((rtx)); 30218334Speter#endif 30318334Speter 30418334Speter/* Declare the label NAME global. */ 30590075Sobrienextern void assemble_global PARAMS ((const char *)); 30618334Speter 30718334Speter/* Assemble a label named NAME. */ 30890075Sobrienextern void assemble_label PARAMS ((const char *)); 30990075Sobrienextern void assemble_eh_label PARAMS ((const char *)); 31018334Speter 31118334Speter/* Output to FILE a reference to the assembler name of a C-level name NAME. 31218334Speter If NAME starts with a *, the rest of NAME is output verbatim. 31318334Speter Otherwise NAME is transformed in an implementation-defined way 31418334Speter (usually by the addition of an underscore). 31518334Speter Many macros in the tm file are defined to call this function. */ 31690075Sobrienextern void assemble_name PARAMS ((FILE *, const char *)); 31718334Speter 31890075Sobrien/* Return the assembler directive for creating a given kind of integer 31990075Sobrien object. SIZE is the number of bytes in the object and ALIGNED_P 32090075Sobrien indicates whether it is known to be aligned. Return NULL if the 32190075Sobrien assembly dialect has no such directive. 32290075Sobrien 32390075Sobrien The returned string should be printed at the start of a new line and 32490075Sobrien be followed immediately by the object's initial value. */ 32590075Sobrienextern const char *integer_asm_op PARAMS ((int, int)); 32690075Sobrien 32718334Speter#ifdef RTX_CODE 32890075Sobrien/* Use directive OP to assemble an integer object X. Print OP at the 32990075Sobrien start of the line, followed immediately by the value of X. */ 33090075Sobrienextern void assemble_integer_with_op PARAMS ((const char *, rtx)); 33118334Speter 33290075Sobrien/* The default implementation of the asm_out.integer target hook. */ 33390075Sobrienextern bool default_assemble_integer PARAMS ((rtx, unsigned int, int)); 33418334Speter 33590075Sobrien/* Assemble the integer constant X into an object of SIZE bytes. ALIGN is 33690075Sobrien the alignment of the integer in bits. Return 1 if we were able to output 33790075Sobrien the constant, otherwise 0. If FORCE is non-zero, abort if we can't output 33890075Sobrien the constant. */ 33990075Sobrienextern bool assemble_integer PARAMS ((rtx, unsigned, unsigned, int)); 34090075Sobrien 34190075Sobrien/* An interface to assemble_integer for the common case in which a value is 34290075Sobrien fully aligned and must be printed. VALUE is the value of the integer 34390075Sobrien object and SIZE is the number of bytes it contains. */ 34490075Sobrien#define assemble_aligned_integer(SIZE, VALUE) \ 34590075Sobrien assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1) 34690075Sobrien 34790075Sobrien#ifdef REAL_VALUE_TYPE 34818334Speter/* Assemble the floating-point constant D into an object of size MODE. */ 34990075Sobrienextern void assemble_real PARAMS ((REAL_VALUE_TYPE, 35090075Sobrien enum machine_mode, 35190075Sobrien unsigned)); 35218334Speter#endif 35318334Speter#endif 35418334Speter 35518334Speter/* At the end of a function, forget the memory-constants 35618334Speter previously made for CONST_DOUBLEs. Mark them as not on real_constant_chain. 35718334Speter Also clear out real_constant_chain and clear out all the chain-pointers. */ 35890075Sobrienextern void clear_const_double_mem PARAMS ((void)); 35918334Speter 36018334Speter/* Start deferring output of subconstants. */ 36190075Sobrienextern void defer_addressed_constants PARAMS ((void)); 36218334Speter 36318334Speter/* Stop deferring output of subconstants, 36418334Speter and output now all those that have been deferred. */ 36590075Sobrienextern void output_deferred_addressed_constants PARAMS ((void)); 36618334Speter 36718334Speter/* Return the size of the constant pool. */ 36890075Sobrienextern int get_pool_size PARAMS ((void)); 36918334Speter 37090075Sobrien#ifdef HAVE_peephole 37190075Sobrienextern rtx peephole PARAMS ((rtx)); 37290075Sobrien#endif 37390075Sobrien 37418334Speter#ifdef TREE_CODE 37518334Speter/* Write all the constants in the constant pool. */ 37690075Sobrienextern void output_constant_pool PARAMS ((const char *, tree)); 37718334Speter 37890075Sobrien/* Return nonzero if VALUE is a valid constant-valued expression 37990075Sobrien for use in initializing a static variable; one that can be an 38090075Sobrien element of a "constant" initializer. 38190075Sobrien 38290075Sobrien Return null_pointer_node if the value is absolute; 38390075Sobrien if it is relocatable, return the variable that determines the relocation. 38490075Sobrien We assume that VALUE has been folded as much as possible; 38590075Sobrien therefore, we do not need to check for such things as 38690075Sobrien arithmetic-combinations of integers. */ 38790075Sobrienextern tree initializer_constant_valid_p PARAMS ((tree, tree)); 38890075Sobrien 38918334Speter/* Output assembler code for constant EXP to FILE, with no label. 39018334Speter This includes the pseudo-op such as ".int" or ".byte", and a newline. 39118334Speter Assumes output_addressed_constants has been done on EXP already. 39218334Speter 39318334Speter Generate exactly SIZE bytes of assembler data, padding at the end 39490075Sobrien with zeros if necessary. SIZE must always be specified. 39590075Sobrien 39690075Sobrien ALIGN is the alignment in bits that may be assumed for the data. */ 39790075Sobrienextern void output_constant PARAMS ((tree, HOST_WIDE_INT, 39890075Sobrien unsigned int)); 39918334Speter#endif 40018334Speter 40118334Speter#ifdef RTX_CODE 40218334Speter/* When outputting delayed branch sequences, this rtx holds the 40318334Speter sequence being output. It is null when no delayed branch 40418334Speter sequence is being output, so it can be used as a test in the 40518334Speter insn output code. 40618334Speter 40718334Speter This variable is defined in final.c. */ 40818334Speterextern rtx final_sequence; 40918334Speter#endif 41018334Speter 41190075Sobrien/* The line number of the beginning of the current function. Various 41290075Sobrien md code needs this so that it can output relative linenumbers. */ 41318334Speter 41490075Sobrien#ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */ 41590075Sobrienextern int sdb_begin_function_line; 41690075Sobrien#endif 41718334Speter 41890075Sobrien/* File in which assembler code is being written. */ 41918334Speter 42090075Sobrien#ifdef BUFSIZ 42190075Sobrienextern FILE *asm_out_file; 42290075Sobrien#endif 42318334Speter 42490075Sobrien/* The first global object in the file. */ 42590075Sobrienextern const char *first_global_object_name; 42618334Speter 42790075Sobrien/* The first weak object in the file. */ 42890075Sobrienextern const char *weak_global_object_name; 42918334Speter 43052284Sobrien/* Nonzero if function being compiled doesn't contain any calls 43152284Sobrien (ignoring the prologue and epilogue). This is set prior to 43252284Sobrien local register allocation and is valid for the remaining 43390075Sobrien compiler passes. */ 43452284Sobrien 43552284Sobrienextern int current_function_is_leaf; 43652284Sobrien 43790075Sobrien/* Nonzero if function being compiled doesn't contain any instructions 43890075Sobrien that can throw an exception. This is set prior to final. */ 43990075Sobrien 44090075Sobrienextern int current_function_nothrow; 44190075Sobrien 44252284Sobrien/* Nonzero if function being compiled doesn't modify the stack pointer 44352284Sobrien (ignoring the prologue and epilogue). This is only valid after 44490075Sobrien life_analysis has run. */ 44552284Sobrien 44652284Sobrienextern int current_function_sp_is_unchanging; 44752284Sobrien 44852284Sobrien/* Nonzero if the function being compiled is a leaf function which only 44952284Sobrien uses leaf registers. This is valid after reload (specifically after 45052284Sobrien sched2) and is useful only if the port defines LEAF_REGISTERS. */ 45152284Sobrien 45252284Sobrienextern int current_function_uses_only_leaf_regs; 45352284Sobrien 45452284Sobrien/* Default file in which to dump debug output. */ 45552284Sobrien 45652284Sobrien#ifdef BUFSIZ 45752284Sobrienextern FILE *rtl_dump_file; 45852284Sobrien#endif 45952284Sobrien 46090075Sobrien/* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */ 46190075Sobrienextern struct rtx_def *current_insn_predicate; 46290075Sobrien 46390075Sobrien/* Last insn processed by final_scan_insn. */ 46490075Sobrienextern struct rtx_def *current_output_insn; 46590075Sobrien 46650397Sobrien/* Decide whether DECL needs to be in a writable section. RELOC is the same 46750397Sobrien as for SELECT_SECTION. */ 46850397Sobrien 46950397Sobrien#define DECL_READONLY_SECTION(DECL,RELOC) \ 47050397Sobrien (TREE_READONLY (DECL) \ 47150397Sobrien && ! TREE_THIS_VOLATILE (DECL) \ 47250397Sobrien && DECL_INITIAL (DECL) \ 47350397Sobrien && (DECL_INITIAL (DECL) == error_mark_node \ 47450397Sobrien || TREE_CONSTANT (DECL_INITIAL (DECL))) \ 47550397Sobrien && ! (RELOC && (flag_pic || DECL_ONE_ONLY (DECL)))) 47652284Sobrien 47752284Sobrien/* User label prefix in effect for this compilation. */ 47852284Sobrienextern const char *user_label_prefix; 47952284Sobrien 48052284Sobrien/* This macro gets just the user-specified name 48152284Sobrien out of the string in a SYMBOL_REF. On most machines, 48252284Sobrien we discard the * if any and that's all. */ 48352284Sobrien#ifndef STRIP_NAME_ENCODING 48452284Sobrien#define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME) \ 48552284Sobrien (VAR) = ((SYMBOL_NAME) + ((SYMBOL_NAME)[0] == '*')) 48652284Sobrien#endif 48790075Sobrien/* Assign unique numbers to labels generated for profiling. */ 48890075Sobrien 48990075Sobrienextern int profile_label_no; 49090075Sobrien 49190075Sobrien/* Default target function prologue and epilogue assembler output. */ 49290075Sobrienextern void default_function_pro_epilogue PARAMS ((FILE *, HOST_WIDE_INT)); 49390075Sobrien 49490075Sobrien/* Tell assembler to switch to the section for the exception table. */ 49590075Sobrienextern void default_exception_section PARAMS ((void)); 49690075Sobrien 49790075Sobrien/* Tell assembler to switch to the section for the EH frames. */ 49890075Sobrienextern void default_eh_frame_section PARAMS ((void)); 49990075Sobrien 50090075Sobrien/* Default target hook that outputs nothing to a stream. */ 50190075Sobrienextern void no_asm_to_stream PARAMS ((FILE *)); 50290075Sobrien 50390075Sobrien/* Flags controling properties of a section. */ 50490075Sobrien#define SECTION_ENTSIZE 0x000ff /* entity size in section */ 50590075Sobrien#define SECTION_CODE 0x00100 /* contains code */ 50690075Sobrien#define SECTION_WRITE 0x00200 /* data is writable */ 50790075Sobrien#define SECTION_DEBUG 0x00400 /* contains debug data */ 50890075Sobrien#define SECTION_LINKONCE 0x00800 /* is linkonce */ 50990075Sobrien#define SECTION_SMALL 0x01000 /* contains "small data" */ 51090075Sobrien#define SECTION_BSS 0x02000 /* contains zeros only */ 51190075Sobrien#define SECTION_FORGET 0x04000 /* forget that we've entered the section */ 51290075Sobrien#define SECTION_MERGE 0x08000 /* contains mergeable data */ 51390075Sobrien#define SECTION_STRINGS 0x10000 /* contains zero terminated strings without 51490075Sobrien embedded zeros */ 51590075Sobrien#define SECTION_MACH_DEP 0x20000 /* subsequent bits reserved for target */ 51690075Sobrien 51790075Sobrienextern unsigned int get_named_section_flags PARAMS ((const char *)); 51890075Sobrienextern bool set_named_section_flags PARAMS ((const char *, unsigned int)); 51990075Sobrienextern void named_section_flags PARAMS ((const char *, unsigned int)); 52090075Sobrienextern bool named_section_first_declaration PARAMS((const char *)); 52190075Sobrien 52290075Sobrienunion tree_node; 52390075Sobrienextern unsigned int default_section_type_flags PARAMS ((union tree_node *, 52490075Sobrien const char *, int)); 52590075Sobrien 52690075Sobrienextern void default_no_named_section PARAMS ((const char *, unsigned int)); 52790075Sobrienextern void default_elf_asm_named_section PARAMS ((const char *, unsigned int)); 52890075Sobrienextern void default_coff_asm_named_section PARAMS ((const char *, 52990075Sobrien unsigned int)); 53090075Sobrienextern void default_pe_asm_named_section PARAMS ((const char *, unsigned int)); 53190075Sobrien 53290075Sobrienextern void default_stabs_asm_out_destructor PARAMS ((struct rtx_def *, int)); 53390075Sobrienextern void default_named_section_asm_out_destructor PARAMS ((struct rtx_def *, 53490075Sobrien int)); 53590075Sobrienextern void default_dtor_section_asm_out_destructor PARAMS ((struct rtx_def *, 53690075Sobrien int)); 53790075Sobrienextern void default_stabs_asm_out_constructor PARAMS ((struct rtx_def *, int)); 53890075Sobrienextern void default_named_section_asm_out_constructor PARAMS ((struct rtx_def *, 53990075Sobrien int)); 54090075Sobrienextern void default_ctor_section_asm_out_constructor PARAMS ((struct rtx_def *, 54190075Sobrien int)); 54290075Sobrien 54390075Sobrien/* Emit data for vtable gc for GNU binutils. */ 54490075Sobrienextern void assemble_vtable_entry PARAMS ((struct rtx_def *, HOST_WIDE_INT)); 54590075Sobrienextern void assemble_vtable_inherit PARAMS ((struct rtx_def *, 54690075Sobrien struct rtx_def *)); 547