output.h revision 96263
138514Sdfr/* Declarations for insn-output.c. These functions are defined in recog.c, 259603Sdfr final.c, and varasm.c. 338514Sdfr Copyright (C) 1987, 1991, 1994, 1997, 1998, 438514Sdfr 1999, 2000, 2001, 2002 Free Software Foundation, Inc. 538514Sdfr 638514SdfrThis file is part of GCC. 738514Sdfr 838514SdfrGCC is free software; you can redistribute it and/or modify it under 938514Sdfrthe terms of the GNU General Public License as published by the Free 1038514SdfrSoftware Foundation; either version 2, or (at your option) any later 1138514Sdfrversion. 1238514Sdfr 1338514SdfrGCC is distributed in the hope that it will be useful, but WITHOUT ANY 1438514SdfrWARRANTY; without even the implied warranty of MERCHANTABILITY or 1538514SdfrFITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1638514Sdfrfor more details. 1738514Sdfr 1838514SdfrYou should have received a copy of the GNU General Public License 1938514Sdfralong with GCC; see the file COPYING. If not, write to the Free 2038514SdfrSoftware Foundation, 59 Temple Place - Suite 330, Boston, MA 2138514Sdfr02111-1307, USA. */ 2238514Sdfr 2338514Sdfr/* Compute branch alignments based on frequency information in the CFG. */ 2438514Sdfrextern void compute_alignments PARAMS ((void)); 2538514Sdfr 2650477Speter/* Initialize data in final at the beginning of a compilation. */ 2738514Sdfrextern void init_final PARAMS ((const char *)); 2838514Sdfr 2959603Sdfr/* Called at end of source file, 3059603Sdfr to output the block-profiling table for this entire compilation. */ 3138514Sdfrextern void end_final PARAMS ((const char *)); 3276166Smarkm 3338514Sdfr/* Enable APP processing of subsequent output. 3476166Smarkm Used before the output from an `asm' statement. */ 3538514Sdfrextern void app_enable PARAMS ((void)); 3677642Sdd 3738514Sdfr/* Disable APP processing of subsequent output. 3838514Sdfr Called from varasm.c before most kinds of output. */ 3938514Sdfrextern void app_disable PARAMS ((void)); 4038514Sdfr 4138514Sdfr/* Return the number of slots filled in the current 4276166Smarkm delayed branch sequence (we don't count the insn needing the 4338514Sdfr delay slot). Zero if not in a delayed branch sequence. */ 4485735Sgreenextern int dbr_sequence_length PARAMS ((void)); 4585735Sgreen 4685735Sgreen/* Indicate that branch shortening hasn't yet been done. */ 4738514Sdfrextern void init_insn_lengths PARAMS ((void)); 4839071Sdfr 4939071Sdfr#ifdef RTX_CODE 5052128Speter/* Obtain the current length of an insn. If branch shortening has been done, 5139071Sdfr get its actual length. Otherwise, get its maximum length. */ 5239071Sdfrextern int get_attr_length PARAMS ((rtx)); 5339071Sdfr 5452128Speter/* Make a pass over all insns and compute their actual lengths by shortening 5539071Sdfr any branches of variable length if possible. */ 5639071Sdfrextern void shorten_branches PARAMS ((rtx)); 5776166Smarkm 58102288Speter/* Output assembler code for the start of a function, 5939071Sdfr and initialize some of the variables in this file 6059603Sdfr for the new function. The label for the function and associated 6138514Sdfr assembler pseudo-ops have already been output in 6238514Sdfr `assemble_start_function'. */ 6359603Sdfrextern void final_start_function PARAMS ((rtx, FILE *, int)); 6459603Sdfr 6539071Sdfr/* Output assembler code for the end of a function. 6639071Sdfr For clarity, args are same as those of `final_start_function' 6739071Sdfr even though not all of them are needed. */ 6839071Sdfrextern void final_end_function PARAMS ((void)); 6959603Sdfr 7080700Sjake/* Output assembler code for some insns: all or part of a function. */ 7180700Sjakeextern void final PARAMS ((rtx, FILE *, int, int)); 7280700Sjake 7380700Sjake/* The final scan for one insn, INSN. Args are same as in `final', except 7438514Sdfr that INSN is the insn being scanned. Value returned is the next insn to 7538514Sdfr be scanned. */ 7640254Speterextern rtx final_scan_insn PARAMS ((rtx, FILE *, int, int, int)); 7739071Sdfr 7839071Sdfr/* Replace a SUBREG with a REG or a MEM, based on the thing it is a 7939071Sdfr subreg of. */ 8039071Sdfrextern rtx alter_subreg PARAMS ((rtx *)); 8139071Sdfr 8239071Sdfr/* Report inconsistency between the assembler template and the operands. 8339071Sdfr In an `asm', it's the user's fault; otherwise, the compiler's fault. */ 8439071Sdfrextern void output_operand_lossage PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1; 8539071Sdfr 8639071Sdfr/* Output a string of assembler code, substituting insn operands. 8740254Speter Defined in final.c. */ 8840254Speterextern void output_asm_insn PARAMS ((const char *, rtx *)); 8940254Speter 9040254Speter/* Compute a worst-case reference address of a branch so that it 9140254Speter can be safely used in the presence of aligned labels. 9240292Speter Defined in final.c. */ 9340292Speterextern int insn_current_reference_address PARAMS ((rtx)); 9459603Sdfr 9559603Sdfr/* Find the alignment associated with a CODE_LABEL. 9659603Sdfr Defined in final.c. */ 9738514Sdfrextern int label_to_alignment PARAMS ((rtx)); 9838514Sdfr 9959751Speter/* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */ 10059751Speterextern void output_asm_label PARAMS ((rtx)); 10159751Speter 10259751Speter/* Print a memory reference operand for address X 10359603Sdfr using machine-dependent assembler syntax. */ 10459603Sdfrextern void output_address PARAMS ((rtx)); 10559603Sdfr 10659603Sdfr/* Print an integer constant expression in assembler syntax. 10759603Sdfr Addition and subtraction are the only arithmetic 10838514Sdfr that may appear in these expressions. */ 10959603Sdfrextern void output_addr_const PARAMS ((FILE *, rtx)); 11059751Speter 11178161Speter/* Output a string of assembler code, substituting numbers, strings 11278161Speter and fixed syntactic prefixes. */ 11385736Sgreenextern void asm_fprintf PARAMS ((FILE *file, const char *p, ...)); 11485736Sgreen 11585736Sgreen/* Split up a CONST_DOUBLE or integer constant rtx into two rtx's for single 11659603Sdfr words. */ 11759603Sdfrextern void split_double PARAMS ((rtx, rtx *, rtx *)); 11859603Sdfr 11959603Sdfr/* Return nonzero if this function has no function calls. */ 12059603Sdfrextern int leaf_function_p PARAMS ((void)); 12159603Sdfr 12259751Speter/* Return 1 if branch is an forward branch. 12359751Speter Uses insn_shuid array, so it works only in the final pass. May be used by 12459751Speter output templates to add branch prediction hints, for example. */ 12578161Speterextern int final_forward_branch_p PARAMS ((rtx)); 12685736Sgreen 12759603Sdfr/* Return 1 if this function uses only the registers that can be 12859603Sdfr safely renumbered. */ 12959603Sdfrextern int only_leaf_regs_used PARAMS ((void)); 13059603Sdfr 13159603Sdfr/* Scan IN_RTX and its subexpressions, and renumber all regs into those 13259603Sdfr available in leaf functions. */ 13359603Sdfrextern void leaf_renumber_regs_insn PARAMS ((rtx)); 13459603Sdfr 13559603Sdfr/* Locate the proper template for the given insn-code. */ 13659603Sdfrextern const char *get_insn_template PARAMS ((int, rtx)); 13759603Sdfr 13859603Sdfr/* Add function NAME to the weak symbols list. VALUE is a weak alias 13959603Sdfr associated with NAME. */ 14059603Sdfrextern int add_weak PARAMS ((const char *, const char *)); 14159751Speter 14259603Sdfr/* Functions in flow.c */ 14359603Sdfrextern void allocate_for_life_analysis PARAMS ((void)); 14466719Sjhbextern int regno_uninitialized PARAMS ((unsigned int)); 14566719Sjhbextern int regno_clobbered_at_setjmp PARAMS ((int)); 14659603Sdfrextern void find_basic_blocks PARAMS ((rtx, int, FILE *)); 14738514Sdfrextern bool cleanup_cfg PARAMS ((int)); 14859603Sdfrextern void check_function_return_warnings PARAMS ((void)); 14959603Sdfr#endif 15059603Sdfr 15159603Sdfr/* Functions in varasm.c. */ 15266719Sjhb 15359603Sdfr/* Tell assembler to switch to text section. */ 15459603Sdfrextern void text_section PARAMS ((void)); 15559603Sdfr 15659603Sdfr/* Tell assembler to switch to data section. */ 157104094Sphkextern void data_section PARAMS ((void)); 15866719Sjhb 15966719Sjhb/* Tell assembler to make sure its in the data section. */ 16059603Sdfrextern void force_data_section PARAMS ((void)); 16159603Sdfr 16259603Sdfr/* Tell assembler to switch to read-only data section. This is normally 16359603Sdfr the text section. */ 16459603Sdfrextern void readonly_data_section PARAMS ((void)); 16595228Smarcel 16695228Smarcel/* Determine if we're in the text section. */ 16795228Smarcelextern int in_text_section PARAMS ((void)); 16895228Smarcel 16959603Sdfr#ifdef CTORS_SECTION_ASM_OP 17038514Sdfrextern void ctors_section PARAMS ((void)); 17138514Sdfr#endif 17238514Sdfr 17338514Sdfr#ifdef DTORS_SECTION_ASM_OP 17438514Sdfrextern void dtors_section PARAMS ((void)); 17538514Sdfr#endif 17638514Sdfr 17740156Speter#ifdef BSS_SECTION_ASM_OP 17840156Speterextern void bss_section PARAMS ((void)); 17940156Speter#endif 18040156Speter 18181500Swpaul#ifdef CONST_SECTION_ASM_OP 18281500Swpaulextern void const_section PARAMS ((void)); 18340156Speter#endif 18438514Sdfr 18559603Sdfr#ifdef INIT_SECTION_ASM_OP 18638514Sdfrextern void init_section PARAMS ((void)); 18740156Speter#endif 18882848Speter 18982848Speter#ifdef FINI_SECTION_ASM_OP 19082848Speterextern void fini_section PARAMS ((void)); 19182848Speter#endif 19282848Speter 19382848Speter#ifdef EXPORTS_SECTION_ASM_OP 19482848Speterextern void exports_section PARAMS ((void)); 19582848Speter#endif 19682848Speter 19782848Speter#ifdef TDESC_SECTION_ASM_OP 19882848Speterextern void tdesc_section PARAMS ((void)); 19982848Speter#endif 20082848Speter 20159603Sdfr#ifdef DRECTVE_SECTION_ASM_OP 20282848Speterextern void drectve_section PARAMS ((void)); 20359603Sdfr#endif 20482848Speter 20559603Sdfr#ifdef SDATA_SECTION_ASM_OP 20682848Speterextern void sdata_section PARAMS ((void)); 20782848Speter#endif 20882848Speter 20982848Speter#ifdef RDATA_SECTION_ASM_OP 21040156Speterextern void rdata_section PARAMS ((void)); 21182848Speter#endif 21282848Speter 21382848Speter#ifdef TREE_CODE 21482848Speter/* Tell assembler to change to section NAME for DECL. 21582848Speter If DECL is NULL, just switch to section NAME. 21682848Speter If NAME is NULL, get the name from DECL. 21782848Speter If RELOC is 1, the initializer for DECL contains relocs. */ 21882848Speterextern void named_section PARAMS ((tree, const char *, int)); 21982848Speter 22082848Speter/* Tell assembler to switch to the section for function DECL. */ 22159603Sdfrextern void function_section PARAMS ((tree)); 22259603Sdfr 22382848Speter/* Tell assembler to switch to the section for string merging. */ 22482848Speterextern void mergeable_string_section PARAMS ((tree, unsigned HOST_WIDE_INT, 22582848Speter unsigned int)); 22682848Speter 22782848Speter/* Tell assembler to switch to the section for constant merging. */ 22882848Speterextern void mergeable_constant_section PARAMS ((enum machine_mode, 22982848Speter unsigned HOST_WIDE_INT, 23059603Sdfr unsigned int)); 23182848Speter 23282848Speter/* Declare DECL to be a weak symbol. */ 23382848Speterextern void declare_weak PARAMS ((tree)); 23459603Sdfr/* Merge weak status. */ 23582848Speterextern void merge_weak PARAMS ((tree, tree)); 23659603Sdfr#endif /* TREE_CODE */ 23738514Sdfr 23838514Sdfr/* Emit any pending weak declarations. */ 23940156Speterextern void weak_finish PARAMS ((void)); 24038514Sdfr 24138514Sdfr/* Decode an `asm' spec for a declaration as a register name. 24259751Speter Return the register number, or -1 if nothing specified, 24340254Speter or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized, 24440254Speter or -3 if ASMSPEC is `cc' and is not recognized, 24540254Speter or -4 if ASMSPEC is `memory' and is not recognized. 24640254Speter Accept an exact spelling or a decimal number. 24740254Speter Prefixes such as % are optional. */ 24840254Speterextern int decode_reg_name PARAMS ((const char *)); 24940254Speter 25040254Speter#ifdef TREE_CODE 25140292Speter/* Make the rtl for variable VAR be volatile. 25240292Speter Use this only for static variables. */ 25340254Speterextern void make_var_volatile PARAMS ((tree)); 25440254Speter 25540254Speter/* Output alignment directive to align for constant expression EXP. */ 25640254Speterextern void assemble_constant_align PARAMS ((tree)); 25740254Speter 25840254Speterextern void assemble_alias PARAMS ((tree, tree)); 25940254Speter 26040254Speter/* Output a string of literal assembler code 26140254Speter for an `asm' keyword used between functions. */ 26240254Speterextern void assemble_asm PARAMS ((tree)); 26340254Speter 26440254Speter/* Output assembler code for the constant pool of a function and associated 26540254Speter with defining the name of the function. DECL describes the function. 26640254Speter NAME is the function's name. For the constant pool, we use the current 26740254Speter constant pool data. */ 26840254Speterextern void assemble_start_function PARAMS ((tree, const char *)); 26940254Speter 27040254Speter/* Output assembler code associated with defining the size of the 27140254Speter function. DECL describes the function. NAME is the function's name. */ 27240254Speterextern void assemble_end_function PARAMS ((tree, const char *)); 27340254Speter 27440254Speter/* Assemble everything that is needed for a variable or function declaration. 27540254Speter Not used for automatic variables, and not used for function definitions. 27640254Speter Should not be called for variables of incomplete structure type. 27740254Speter 27840254Speter TOP_LEVEL is nonzero if this variable has file scope. 27940254Speter AT_END is nonzero if this is the special handling, at end of compilation, 28040254Speter to define things that have had only tentative definitions. 28140254Speter DONT_OUTPUT_DATA if nonzero means don't actually output the 28240254Speter initial value (that will be done by the caller). */ 28340254Speterextern void assemble_variable PARAMS ((tree, int, int, int)); 28440254Speter 28540254Speter/* Output something to declare an external symbol to the assembler. 28640254Speter (Most assemblers don't need this, so we normally output nothing.) 28740254Speter Do nothing if DECL is not external. */ 28840254Speterextern void assemble_external PARAMS ((tree)); 28940254Speter#endif /* TREE_CODE */ 29040254Speter 29140254Speter/* Assemble code to leave SIZE bytes of zeros. */ 29240254Speterextern void assemble_zeros PARAMS ((int)); 29359603Sdfr 29438514Sdfr/* Assemble an alignment pseudo op for an ALIGN-bit boundary. */ 29559603Sdfrextern void assemble_align PARAMS ((int)); 29639071Sdfrextern void assemble_eh_align PARAMS ((int)); 29738514Sdfr 29838514Sdfr/* Assemble a string constant with the specified C string as contents. */ 29938514Sdfrextern void assemble_string PARAMS ((const char *, int)); 30038514Sdfr 30138514Sdfr#ifdef RTX_CODE 30238514Sdfr/* Similar, for calling a library function FUN. */ 30380700Sjakeextern void assemble_external_libcall PARAMS ((rtx)); 30438514Sdfr#endif 30538514Sdfr 30638514Sdfr/* Declare the label NAME global. */ 30738514Sdfrextern void assemble_global PARAMS ((const char *)); 30838514Sdfr 30938514Sdfr/* Assemble a label named NAME. */ 31038514Sdfrextern void assemble_label PARAMS ((const char *)); 31138514Sdfrextern void assemble_eh_label PARAMS ((const char *)); 31239071Sdfr 31338514Sdfr/* Output to FILE a reference to the assembler name of a C-level name NAME. 31440254Speter If NAME starts with a *, the rest of NAME is output verbatim. 31540254Speter Otherwise NAME is transformed in an implementation-defined way 31640254Speter (usually by the addition of an underscore). 31738514Sdfr Many macros in the tm file are defined to call this function. */ 31839071Sdfrextern void assemble_name PARAMS ((FILE *, const char *)); 31938514Sdfr 32038514Sdfr/* Return the assembler directive for creating a given kind of integer 32138514Sdfr object. SIZE is the number of bytes in the object and ALIGNED_P 32238514Sdfr indicates whether it is known to be aligned. Return NULL if the 32339071Sdfr assembly dialect has no such directive. 32439071Sdfr 32539071Sdfr The returned string should be printed at the start of a new line and 32639071Sdfr be followed immediately by the object's initial value. */ 32739071Sdfrextern const char *integer_asm_op PARAMS ((int, int)); 32839071Sdfr 32939071Sdfr#ifdef RTX_CODE 33039071Sdfr/* Use directive OP to assemble an integer object X. Print OP at the 33139071Sdfr start of the line, followed immediately by the value of X. */ 33239071Sdfrextern void assemble_integer_with_op PARAMS ((const char *, rtx)); 33339071Sdfr 33439071Sdfr/* The default implementation of the asm_out.integer target hook. */ 33539071Sdfrextern bool default_assemble_integer PARAMS ((rtx, unsigned int, int)); 33639071Sdfr 33739071Sdfr/* Assemble the integer constant X into an object of SIZE bytes. ALIGN is 33839071Sdfr the alignment of the integer in bits. Return 1 if we were able to output 33939071Sdfr the constant, otherwise 0. If FORCE is non-zero, abort if we can't output 34039071Sdfr the constant. */ 34139071Sdfrextern bool assemble_integer PARAMS ((rtx, unsigned, unsigned, int)); 34239071Sdfr 34339071Sdfr/* An interface to assemble_integer for the common case in which a value is 34439071Sdfr fully aligned and must be printed. VALUE is the value of the integer 34539071Sdfr object and SIZE is the number of bytes it contains. */ 34639071Sdfr#define assemble_aligned_integer(SIZE, VALUE) \ 34739071Sdfr assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1) 34839071Sdfr 34939071Sdfr#ifdef REAL_VALUE_TYPE 35039071Sdfr/* Assemble the floating-point constant D into an object of size MODE. */ 35139071Sdfrextern void assemble_real PARAMS ((REAL_VALUE_TYPE, 35239071Sdfr enum machine_mode, 35339071Sdfr unsigned)); 35439071Sdfr#endif 35539071Sdfr#endif 35639071Sdfr 35739071Sdfr/* At the end of a function, forget the memory-constants 35859603Sdfr previously made for CONST_DOUBLEs. Mark them as not on real_constant_chain. 35959603Sdfr Also clear out real_constant_chain and clear out all the chain-pointers. */ 36059603Sdfrextern void clear_const_double_mem PARAMS ((void)); 36159603Sdfr 36259603Sdfr/* Start deferring output of subconstants. */ 36338514Sdfrextern void defer_addressed_constants PARAMS ((void)); 36438514Sdfr 36539071Sdfr/* Stop deferring output of subconstants, 36639071Sdfr and output now all those that have been deferred. */ 36739071Sdfrextern void output_deferred_addressed_constants PARAMS ((void)); 36839071Sdfr 36939071Sdfr/* Return the size of the constant pool. */ 37039071Sdfrextern int get_pool_size PARAMS ((void)); 37139071Sdfr 37239071Sdfr#ifdef HAVE_peephole 37340254Speterextern rtx peephole PARAMS ((rtx)); 37440254Speter#endif 37540254Speter 37640254Speter#ifdef TREE_CODE 37740254Speter/* Write all the constants in the constant pool. */ 37838514Sdfrextern void output_constant_pool PARAMS ((const char *, tree)); 37938514Sdfr 38038514Sdfr/* Return nonzero if VALUE is a valid constant-valued expression 38139071Sdfr for use in initializing a static variable; one that can be an 38239071Sdfr element of a "constant" initializer. 38339071Sdfr 38439071Sdfr Return null_pointer_node if the value is absolute; 38539071Sdfr if it is relocatable, return the variable that determines the relocation. 38639071Sdfr We assume that VALUE has been folded as much as possible; 38759603Sdfr therefore, we do not need to check for such things as 38859603Sdfr arithmetic-combinations of integers. */ 38959603Sdfrextern tree initializer_constant_valid_p PARAMS ((tree, tree)); 39059603Sdfr 39159603Sdfr/* Output assembler code for constant EXP to FILE, with no label. 39259603Sdfr This includes the pseudo-op such as ".int" or ".byte", and a newline. 39359603Sdfr Assumes output_addressed_constants has been done on EXP already. 39459603Sdfr 39559603Sdfr Generate exactly SIZE bytes of assembler data, padding at the end 39659603Sdfr with zeros if necessary. SIZE must always be specified. 39759603Sdfr 39859603Sdfr ALIGN is the alignment in bits that may be assumed for the data. */ 39959603Sdfrextern void output_constant PARAMS ((tree, HOST_WIDE_INT, 40059603Sdfr unsigned int)); 40159603Sdfr#endif 40259603Sdfr 40359603Sdfr#ifdef RTX_CODE 40459603Sdfr/* When outputting delayed branch sequences, this rtx holds the 40559603Sdfr sequence being output. It is null when no delayed branch 40659603Sdfr sequence is being output, so it can be used as a test in the 40759603Sdfr insn output code. 40859603Sdfr 40959603Sdfr This variable is defined in final.c. */ 41059603Sdfrextern rtx final_sequence; 41159603Sdfr#endif 41259603Sdfr 41359603Sdfr/* The line number of the beginning of the current function. Various 41459603Sdfr md code needs this so that it can output relative linenumbers. */ 41559603Sdfr 41659603Sdfr#ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */ 41759603Sdfrextern int sdb_begin_function_line; 41859603Sdfr#endif 41959603Sdfr 42059603Sdfr/* File in which assembler code is being written. */ 42138514Sdfr 42259751Speter#ifdef BUFSIZ 42359751Speterextern FILE *asm_out_file; 42440156Speter#endif 42540156Speter 42640156Speter/* The first global object in the file. */ 42740156Speterextern const char *first_global_object_name; 42840156Speter 42940156Speter/* The first weak object in the file. */ 43040156Speterextern const char *weak_global_object_name; 43140156Speter 43259751Speter/* Nonzero if function being compiled doesn't contain any calls 43340156Speter (ignoring the prologue and epilogue). This is set prior to 43440156Speter local register allocation and is valid for the remaining 43559751Speter compiler passes. */ 43640156Speter 43740156Speterextern int current_function_is_leaf; 43840156Speter 43940156Speter/* Nonzero if function being compiled doesn't contain any instructions 44040156Speter that can throw an exception. This is set prior to final. */ 44140156Speter 44240156Speterextern int current_function_nothrow; 44340156Speter 44440156Speter/* Nonzero if function being compiled doesn't modify the stack pointer 44540156Speter (ignoring the prologue and epilogue). This is only valid after 44659603Sdfr life_analysis has run. */ 44759603Sdfr 44859603Sdfrextern int current_function_sp_is_unchanging; 44959603Sdfr 45059603Sdfr/* Nonzero if the function being compiled is a leaf function which only 45159603Sdfr uses leaf registers. This is valid after reload (specifically after 45259603Sdfr sched2) and is useful only if the port defines LEAF_REGISTERS. */ 45340292Speter 45440156Speterextern int current_function_uses_only_leaf_regs; 45540156Speter 45640156Speter/* Default file in which to dump debug output. */ 45740156Speter 45840156Speter#ifdef BUFSIZ 45940156Speterextern FILE *rtl_dump_file; 46040156Speter#endif 46140156Speter 46240156Speter/* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */ 46359603Sdfrextern struct rtx_def *current_insn_predicate; 46440156Speter 46540156Speter/* Last insn processed by final_scan_insn. */ 46640156Speterextern struct rtx_def *current_output_insn; 46740156Speter 46859751Speter/* Decide whether DECL needs to be in a writable section. RELOC is the same 46959751Speter as for SELECT_SECTION. */ 47059751Speter 47159751Speter#define DECL_READONLY_SECTION(DECL,RELOC) \ 47259751Speter (TREE_READONLY (DECL) \ 47359751Speter && ! TREE_THIS_VOLATILE (DECL) \ 47459751Speter && DECL_INITIAL (DECL) \ 47559751Speter && (DECL_INITIAL (DECL) == error_mark_node \ 47659751Speter || TREE_CONSTANT (DECL_INITIAL (DECL))) \ 47781500Swpaul && ! (RELOC && (flag_pic || DECL_ONE_ONLY (DECL)))) 47881500Swpaul 47981500Swpaul/* User label prefix in effect for this compilation. */ 48059751Speterextern const char *user_label_prefix; 48159751Speter 48259751Speter/* This macro gets just the user-specified name 48359751Speter out of the string in a SYMBOL_REF. On most machines, 48459751Speter we discard the * if any and that's all. */ 48559751Speter#ifndef STRIP_NAME_ENCODING 48659751Speter#define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME) \ 48759751Speter (VAR) = ((SYMBOL_NAME) + ((SYMBOL_NAME)[0] == '*')) 48859751Speter#endif 48959751Speter 49040156Speter/* Default target function prologue and epilogue assembler output. */ 49159751Speterextern void default_function_pro_epilogue PARAMS ((FILE *, HOST_WIDE_INT)); 49259603Sdfr 49359751Speter/* Tell assembler to switch to the section for the exception table. */ 49440156Speterextern void default_exception_section PARAMS ((void)); 49559751Speter 49659603Sdfr/* Tell assembler to switch to the section for the EH frames. */ 49759603Sdfrextern void default_eh_frame_section PARAMS ((void)); 49859603Sdfr 49959603Sdfr/* Default target hook that outputs nothing to a stream. */ 50081500Swpaulextern void no_asm_to_stream PARAMS ((FILE *)); 50181500Swpaul 50281500Swpaul/* Flags controling properties of a section. */ 50359603Sdfr#define SECTION_ENTSIZE 0x000ff /* entity size in section */ 50459603Sdfr#define SECTION_CODE 0x00100 /* contains code */ 50559603Sdfr#define SECTION_WRITE 0x00200 /* data is writable */ 50659603Sdfr#define SECTION_DEBUG 0x00400 /* contains debug data */ 50759603Sdfr#define SECTION_LINKONCE 0x00800 /* is linkonce */ 50840156Speter#define SECTION_SMALL 0x01000 /* contains "small data" */ 50940156Speter#define SECTION_BSS 0x02000 /* contains zeros only */ 51040156Speter#define SECTION_FORGET 0x04000 /* forget that we've entered the section */ 51140156Speter#define SECTION_MERGE 0x08000 /* contains mergeable data */ 51259751Speter#define SECTION_STRINGS 0x10000 /* contains zero terminated strings without 51338514Sdfr embedded zeros */ 51438514Sdfr#define SECTION_OVERRIDE 0x20000 /* allow override of default flags */ 51583366Sjulian#define SECTION_MACH_DEP 0x40000 /* subsequent bits reserved for target */ 51640962Speter 51740962Speterextern unsigned int get_named_section_flags PARAMS ((const char *)); 51839071Sdfrextern bool set_named_section_flags PARAMS ((const char *, unsigned int)); 51939071Sdfrextern void named_section_flags PARAMS ((const char *, unsigned int)); 52039071Sdfrextern bool named_section_first_declaration PARAMS((const char *)); 52139071Sdfr 52239071Sdfrunion tree_node; 52339071Sdfrextern unsigned int default_section_type_flags PARAMS ((union tree_node *, 52439071Sdfr const char *, int)); 52539071Sdfr 52639071Sdfrextern void default_no_named_section PARAMS ((const char *, unsigned int)); 52739071Sdfrextern void default_elf_asm_named_section PARAMS ((const char *, unsigned int)); 52839071Sdfrextern void default_coff_asm_named_section PARAMS ((const char *, 52939071Sdfr unsigned int)); 53038514Sdfrextern void default_pe_asm_named_section PARAMS ((const char *, unsigned int)); 53162550Smckusick 53238514Sdfrextern void default_stabs_asm_out_destructor PARAMS ((struct rtx_def *, int)); 53338514Sdfrextern void default_named_section_asm_out_destructor PARAMS ((struct rtx_def *, 53440292Speter int)); 53540292Speterextern void default_dtor_section_asm_out_destructor PARAMS ((struct rtx_def *, 53640292Speter int)); 53740292Speterextern void default_stabs_asm_out_constructor PARAMS ((struct rtx_def *, int)); 53840292Speterextern void default_named_section_asm_out_constructor PARAMS ((struct rtx_def *, 53981500Swpaul int)); 54081201Sgreenextern void default_ctor_section_asm_out_constructor PARAMS ((struct rtx_def *, 54181500Swpaul int)); 54238514Sdfr 54379224Sdillon/* Emit data for vtable gc for GNU binutils. */ 54479224Sdillonextern void assemble_vtable_entry PARAMS ((struct rtx_def *, HOST_WIDE_INT)); 54540292Speterextern void assemble_vtable_inherit PARAMS ((struct rtx_def *, 54640292Speter struct rtx_def *)); 54740292Speter