X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Foutput.h;h=1a2eefb36ebcf8e14d55c55d6b224f3856955299;hb=4a5feece4e5b04bfc028bcf2ec9d8ec15c7a785a;hp=7e1c28bd7e57f26ff5a0ee4106533fb63d714906;hpb=51239a706b2f8b517918ea07aea16983d4bbfd6f;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/output.h b/gcc/output.h index 7e1c28bd7e5..1a2eefb36eb 100644 --- a/gcc/output.h +++ b/gcc/output.h @@ -1,159 +1,213 @@ /* Declarations for insn-output.c. These functions are defined in recog.c, final.c, and varasm.c. - Copyright (C) 1987, 1991, 1994, 97-98, 1999 Free Software Foundation, Inc. + Copyright (C) 1987, 1991, 1994, 1997, 1998, + 1999, 2000, 2001 Free Software Foundation, Inc. -This file is part of GNU CC. +This file is part of GCC. -GNU CC 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 version. +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 +version. -GNU CC 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. +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 GNU CC; 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 COPYING. If not, write to the Free +Software Foundation, 59 Temple Place - Suite 330, Boston, MA +02111-1307, USA. */ + +/* Compute branch alignments based on frequency information in the CFG. */ +extern void compute_alignments PARAMS ((void)); /* Initialize data in final at the beginning of a compilation. */ -extern void init_final PROTO((char *)); +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 PROTO((const char *)); +extern void end_final PARAMS ((const char *)); /* Enable APP processing of subsequent output. Used before the output from an `asm' statement. */ -extern void app_enable PROTO((void)); +extern void app_enable PARAMS ((void)); /* Disable APP processing of subsequent output. Called from varasm.c before most kinds of output. */ -extern void app_disable PROTO((void)); +extern void app_disable PARAMS ((void)); -/* Return the number of slots filled in the current +/* 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 PROTO((void)); +extern int dbr_sequence_length PARAMS ((void)); /* Indicate that branch shortening hasn't yet been done. */ -extern void init_insn_lengths PROTO((void)); +extern void init_insn_lengths PARAMS ((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 PROTO((rtx)); +extern int get_attr_length PARAMS ((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 PROTO((rtx)); +extern void shorten_branches PARAMS ((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 PROTO((rtx, FILE *, int)); +extern void final_start_function PARAMS ((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 PROTO((rtx, FILE *, int)); +extern void final_end_function PARAMS ((void)); /* Output assembler code for some insns: all or part of a function. */ -extern void final PROTO((rtx, FILE *, int, int)); +extern void final PARAMS ((rtx, FILE *, int, 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 PROTO((rtx, FILE *, int, int, int)); +extern rtx final_scan_insn PARAMS ((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 PROTO((rtx)); +extern rtx alter_subreg PARAMS ((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 PROTO((const char *)); +extern void output_operand_lossage PARAMS ((const char *)); /* Output a string of assembler code, substituting insn operands. Defined in final.c. */ -extern void output_asm_insn PROTO((const char *, rtx *)); +extern void output_asm_insn PARAMS ((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 PROTO((rtx)); +extern int insn_current_reference_address PARAMS ((rtx)); /* Find the alignment associated with a CODE_LABEL. Defined in final.c. */ -extern int label_to_alignment PROTO((rtx)); +extern int label_to_alignment PARAMS ((rtx)); /* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */ -extern void output_asm_label PROTO((rtx)); +extern void output_asm_label PARAMS ((rtx)); /* Print a memory reference operand for address X using machine-dependent assembler syntax. */ -extern void output_address PROTO((rtx)); +extern void output_address PARAMS ((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 PROTO((FILE *, rtx)); +extern void output_addr_const PARAMS ((FILE *, rtx)); /* Output a string of assembler code, substituting numbers, strings and fixed syntactic prefixes. */ -extern void asm_fprintf PVPROTO((FILE *file, const char *p, ...)); +extern void asm_fprintf PARAMS ((FILE *file, const char *p, ...)); /* Split up a CONST_DOUBLE or integer constant rtx into two rtx's for single words. */ -extern void split_double PROTO((rtx, rtx *, rtx *)); +extern void split_double PARAMS ((rtx, rtx *, rtx *)); /* Return nonzero if this function has no function calls. */ -extern int leaf_function_p PROTO((void)); +extern int leaf_function_p PARAMS ((void)); + +/* Return 1 if branch is an 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)); /* Return 1 if this function uses only the registers that can be safely renumbered. */ -extern int only_leaf_regs_used PROTO((void)); +extern int only_leaf_regs_used PARAMS ((void)); /* Scan IN_RTX and its subexpressions, and renumber all regs into those available in leaf functions. */ -extern void leaf_renumber_regs_insn PROTO((rtx)); +extern void leaf_renumber_regs_insn PARAMS ((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 ((const char *, const char *)); /* Functions in flow.c */ -extern void allocate_for_life_analysis PROTO((void)); -extern int regno_uninitialized PROTO((int)); -extern int regno_clobbered_at_setjmp PROTO((int)); -extern void dump_flow_info PROTO((FILE *)); -extern void find_basic_blocks PROTO((rtx, int, FILE *, int)); -extern void free_basic_block_vars PROTO((int)); -extern void set_block_num PROTO((rtx, int)); -extern void life_analysis PROTO((rtx, int, FILE *, int)); +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 void check_function_return_warnings PARAMS ((void)); #endif /* Functions in varasm.c. */ /* Tell assembler to switch to text section. */ -extern void text_section PROTO((void)); +extern void text_section PARAMS ((void)); /* Tell assembler to switch to data section. */ -extern void data_section PROTO((void)); +extern void data_section PARAMS ((void)); /* Tell assembler to make sure its in the data section. */ -extern void force_data_section PROTO((void)); +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 PROTO((void)); +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 -/* Determine if we're in the text section. */ -extern int in_text_section PROTO((void)); +#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 EH_FRAME_SECTION_ASM_OP -extern void eh_frame_section PROTO ((void)); +#ifdef RDATA_SECTION_ASM_OP +extern void rdata_section PARAMS ((void)); #endif #ifdef TREE_CODE @@ -161,25 +215,26 @@ extern void eh_frame_section PROTO ((void)); 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 PROTO((tree, const char *, int)); +extern void named_section PARAMS ((tree, const char *, int)); /* Tell assembler to switch to the section for function DECL. */ -extern void function_section PROTO((tree)); +extern void function_section PARAMS ((tree)); -/* Tell assembler to switch to the section for the exception table. */ -extern void exception_section PROTO((void)); +/* Tell assembler to switch to the section for string merging. */ +extern void mergeable_string_section PARAMS ((tree, unsigned HOST_WIDE_INT, + unsigned int)); -/* Create the rtl to represent a function, for a function definition. - DECL is a FUNCTION_DECL node which describes which function. - The rtl is stored into DECL. */ -extern void make_function_rtl PROTO((tree)); +/* 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 PROTO ((tree)); +extern void declare_weak PARAMS ((tree)); #endif /* TREE_CODE */ /* Emit any pending weak declarations. */ -extern void weak_finish PROTO ((void)); +extern void weak_finish PARAMS ((void)); /* Decode an `asm' spec for a declaration as a register name. Return the register number, or -1 if nothing specified, @@ -188,64 +243,32 @@ extern void weak_finish PROTO ((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 PROTO((const char *)); +extern int decode_reg_name PARAMS ((const char *)); #ifdef TREE_CODE -/* Create the DECL_RTL for a declaration for a static or external variable - or static or external function. - ASMSPEC, if not 0, is the string which the user specified - as the assembler symbol name. - TOP_LEVEL is nonzero if this is a file-scope variable. - - This is never called for PARM_DECL nodes. */ -extern void make_decl_rtl PROTO((tree, const char *, int)); - /* Make the rtl for variable VAR be volatile. Use this only for static variables. */ -extern void make_var_volatile PROTO((tree)); +extern void make_var_volatile PARAMS ((tree)); /* Output alignment directive to align for constant expression EXP. */ -extern void assemble_constant_align PROTO((tree)); +extern void assemble_constant_align PARAMS ((tree)); -extern void assemble_alias PROTO((tree, tree)); +extern void assemble_alias PARAMS ((tree, tree)); /* Output a string of literal assembler code for an `asm' keyword used between functions. */ -extern void assemble_asm PROTO((tree)); - -/* Record an element in the table of global destructors. - How this is done depends on what sort of assembler and linker - are in use. - - NAME should be the name of a global function to be called - at exit time. This name is output using assemble_name. */ -extern void assemble_destructor PROTO((char *)); - -/* Likewise for global constructors. */ -extern void assemble_constructor PROTO((char *)); - -/* Likewise for entries we want to record for garbage collection. - Garbage collection is still under development. */ -extern void assemble_gc_entry PROTO((char *)); +extern void assemble_asm PARAMS ((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 PROTO((tree, char *)); +extern void assemble_start_function PARAMS ((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 PROTO((tree, char *)); - -/* Assemble code to leave SIZE bytes of zeros. */ -extern void assemble_zeros PROTO((int)); - -/* Assemble an alignment pseudo op for an ALIGN-bit boundary. */ -extern void assemble_align PROTO((int)); +extern void assemble_end_function PARAMS ((tree, const char *)); -/* Assemble a string constant with the specified C string as contents. */ -extern void assemble_string PROTO((const char *, int)); /* Assemble everything that is needed for a variable or function declaration. Not used for automatic variables, and not used for function definitions. Should not be called for variables of incomplete structure type. @@ -255,81 +278,125 @@ extern void assemble_string PROTO((const char *, int)); 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 PROTO((tree, int, int, int)); +extern void assemble_variable PARAMS ((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 PROTO((tree)); +extern void assemble_external PARAMS ((tree)); #endif /* TREE_CODE */ +/* Assemble code to leave SIZE bytes of zeros. */ +extern void assemble_zeros PARAMS ((int)); + +/* Assemble an alignment pseudo op for an ALIGN-bit boundary. */ +extern void assemble_align PARAMS ((int)); +extern void assemble_eh_align PARAMS ((int)); + +/* Assemble a string constant with the specified C string as contents. */ +extern void assemble_string PARAMS ((const char *, int)); + #ifdef RTX_CODE /* Similar, for calling a library function FUN. */ -extern void assemble_external_libcall PROTO((rtx)); +extern void assemble_external_libcall PARAMS ((rtx)); #endif /* Declare the label NAME global. */ -extern void assemble_global PROTO((char *)); +extern void assemble_global PARAMS ((const char *)); /* Assemble a label named NAME. */ -extern void assemble_label PROTO((char *)); +extern void assemble_label PARAMS ((const char *)); +extern void assemble_eh_label PARAMS ((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 PROTO((FILE *, char *)); +extern void assemble_name PARAMS ((FILE *, const char *)); -#ifdef RTX_CODE -/* Assemble the integer constant X into an object of SIZE bytes. - X must be either a CONST_INT or CONST_DOUBLE. +/* Return the assembler directive for creating a given kind of integer + object. SIZE is the number of bytes in the object and ALIGNED_P + indicates whether it is known to be aligned. Return NULL if the + assembly dialect has no such directive. - 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 int assemble_integer PROTO((rtx, int, int)); + 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)); -#ifdef EMUSHORT +#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)); + +/* The default implementation of the asm_out.integer target hook. */ +extern bool default_assemble_integer PARAMS ((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)); + +/* 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 + object and SIZE is the number of bytes it contains. */ +#define assemble_aligned_integer(SIZE, VALUE) \ + assemble_integer (VALUE, SIZE, (SIZE) * BITS_PER_UNIT, 1) + +#ifdef REAL_VALUE_TYPE /* Assemble the floating-point constant D into an object of size MODE. */ -extern void assemble_real PROTO((REAL_VALUE_TYPE, - enum machine_mode)); +extern void assemble_real PARAMS ((REAL_VALUE_TYPE, + enum machine_mode, + unsigned)); #endif #endif /* At the end of a function, forget the memory-constants previously made for CONST_DOUBLEs. Mark them as not on real_constant_chain. Also clear out real_constant_chain and clear out all the chain-pointers. */ -extern void clear_const_double_mem PROTO((void)); +extern void clear_const_double_mem PARAMS ((void)); /* Start deferring output of subconstants. */ -extern void defer_addressed_constants PROTO((void)); +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 PROTO((void)); - -/* Initialize constant pool hashing for next function. */ -extern void init_const_rtx_hash_table PROTO((void)); +extern void output_deferred_addressed_constants PARAMS ((void)); /* Return the size of the constant pool. */ -extern int get_pool_size PROTO((void)); +extern int get_pool_size PARAMS ((void)); + +#ifdef HAVE_peephole +extern rtx peephole PARAMS ((rtx)); +#endif #ifdef TREE_CODE /* Write all the constants in the constant pool. */ -extern void output_constant_pool PROTO((char *, tree)); +extern void output_constant_pool PARAMS ((const char *, tree)); + +/* Return nonzero if VALUE is a valid constant-valued expression + for use in initializing a static variable; one that can be an + element of a "constant" initializer. + + Return null_pointer_node if the value is absolute; + if it is relocatable, return the variable that determines the relocation. + 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)); /* Output assembler code for constant EXP to FILE, with no label. This includes the pseudo-op such as ".int" or ".byte", and a newline. Assumes output_addressed_constants has been done on EXP already. Generate exactly SIZE bytes of assembler data, padding at the end - with zeros if necessary. SIZE must always be specified. */ -extern void output_constant PROTO((tree, int)); -#endif + with zeros if necessary. SIZE must always be specified. -/* When outputting assembler code, indicates which alternative - of the constraints was actually satisfied. */ -extern int which_alternative; + 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 #ifdef RTX_CODE /* When outputting delayed branch sequences, this rtx holds the @@ -341,137 +408,48 @@ extern int which_alternative; extern rtx final_sequence; #endif -/* Number of bytes of args popped by function being compiled on its return. - Zero if no bytes are to be popped. - May affect compilation of return insn or of function epilogue. */ - -extern int current_function_pops_args; - -/* Nonzero if function being compiled needs to be given an address - where the value should be stored. */ - -extern int current_function_returns_struct; - -/* Nonzero if function being compiled needs to - return the address of where it has put a structure value. */ - -extern int current_function_returns_pcc_struct; +/* The line number of the beginning of the current function. Various + md code needs this so that it can output relative linenumbers. */ -/* Nonzero if function being compiled needs to be passed a static chain. */ - -extern int current_function_needs_context; - -/* Nonzero if function being compiled can call setjmp. */ - -extern int current_function_calls_setjmp; +#ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */ +extern int sdb_begin_function_line; +#endif -/* Nonzero if function being compiled can call longjmp. */ +/* File in which assembler code is being written. */ -extern int current_function_calls_longjmp; +#ifdef BUFSIZ +extern FILE *asm_out_file; +#endif -/* Nonzero if function being compiled can call alloca, - either as a subroutine or builtin. */ +/* The first global object in the file. */ +extern const char *first_global_object_name; -extern int current_function_calls_alloca; +/* The first weak object in the file. */ +extern const char *weak_global_object_name; -/* Nonzero if function being compiled receives nonlocal gotos - from nested functions. */ +/* Nonzero if function being compiled doesn't contain any calls + (ignoring the prologue and epilogue). This is set prior to + local register allocation and is valid for the remaining + compiler passes. */ -extern int current_function_has_nonlocal_label; +extern int current_function_is_leaf; -/* Nonzero if function being compiled contains nested functions. */ +/* 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_contains_functions; +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. */ + life_analysis has run. */ extern int current_function_sp_is_unchanging; -/* Nonzero if the function being compiled issues a computed jump. */ - -extern int current_function_has_computed_jump; - -/* Nonzero if the current function returns a pointer type */ - -extern int current_function_returns_pointer; - -/* If function's args have a fixed size, this is that size, in bytes. - Otherwise, it is -1. - May affect compilation of return insn or of function epilogue. */ - -extern int current_function_args_size; - -/* # bytes the prologue should push and pretend that the caller pushed them. - The prologue must do this, but only if parms can be passed in registers. */ - -extern int current_function_pretend_args_size; - -/* # of bytes of outgoing arguments required to be pushed by the prologue. - If this is non-zero, it means that ACCUMULATE_OUTGOING_ARGS was defined - and no stack adjusts will be done on function calls. */ - -extern int current_function_outgoing_args_size; - -/* Nonzero if current function uses varargs.h or equivalent. - Zero for functions that use stdarg.h. */ - -extern int current_function_varargs; - -/* Nonzero if current function uses stdarg.h or equivalent. - Zero for functions that use varargs.h. */ - -extern int current_function_stdarg; - -/* Quantities of various kinds of registers - used for the current function's args. */ - -extern CUMULATIVE_ARGS current_function_args_info; - -/* Name of function now being compiled. */ - -extern char *current_function_name; - -#ifdef RTX_CODE -/* If non-zero, an RTL expression for that location at which the current - function returns its result. Usually equal to - DECL_RTL (DECL_RESULT (current_function_decl)). */ - -extern rtx current_function_return_rtx; - -/* If some insns can be deferred to the delay slots of the epilogue, the - delay list for them is recorded here. */ - -extern rtx current_function_epilogue_delay_list; -#endif - -/* Nonzero means generate position-independent code. - This is not fully implemented yet. */ - -extern int flag_pic; - -/* This is nonzero if the current function uses pic_offset_table_rtx. */ -extern int current_function_uses_pic_offset_table; - -/* This is nonzero if the current function uses the constant pool. */ -extern int current_function_uses_const_pool; - -/* Language-specific reason why the current function cannot be made inline. */ -extern char *current_function_cannot_inline; - -/* The line number of the beginning of the current function. - sdbout.c needs this so that it can output relative linenumbers. */ - -#ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */ -extern int sdb_begin_function_line; -#endif +/* Nonzero if the function being compiled is a leaf function which only + uses leaf registers. This is valid after reload (specifically after + sched2) and is useful only if the port defines LEAF_REGISTERS. */ -/* File in which assembler code is being written. */ - -#ifdef BUFSIZ -extern FILE *asm_out_file; -#endif +extern int current_function_uses_only_leaf_regs; /* Default file in which to dump debug output. */ @@ -479,6 +457,12 @@ extern FILE *asm_out_file; extern FILE *rtl_dump_file; #endif +/* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */ +extern struct rtx_def *current_insn_predicate; + +/* Last insn processed by final_scan_insn. */ +extern struct rtx_def *current_output_insn; + /* Decide whether DECL needs to be in a writable section. RELOC is the same as for SELECT_SECTION. */ @@ -492,3 +476,71 @@ extern FILE *rtl_dump_file; /* User label prefix in effect for this compilation. */ extern const char *user_label_prefix; + +/* This macro gets just the user-specified name + out of the string in a SYMBOL_REF. On most machines, + we discard the * if any and that's all. */ +#ifndef STRIP_NAME_ENCODING +#define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME) \ + (VAR) = ((SYMBOL_NAME) + ((SYMBOL_NAME)[0] == '*')) +#endif +/* Assign unique numbers to labels generated for profiling. */ + +extern int profile_label_no; + +/* 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)); + +/* Default target hook that outputs nothing to a stream. */ +extern void no_asm_to_stream PARAMS ((FILE *)); + +/* Flags controling 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 */ +#define SECTION_DEBUG 0x00400 /* contains debug data */ +#define SECTION_LINKONCE 0x00800 /* is linkonce */ +#define SECTION_SMALL 0x01000 /* contains "small data" */ +#define SECTION_BSS 0x02000 /* contains zeros only */ +#define SECTION_FORGET 0x04000 /* forget that we've entered the section */ +#define SECTION_MERGE 0x08000 /* contains mergeable data */ +#define SECTION_STRINGS 0x10000 /* contains zero terminated strings without + embedded zeros */ +#define SECTION_MACH_DEP 0x20000 /* 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)); + +/* 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 *));