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Diffstat (limited to 'contrib/gcc/output.h')
| -rw-r--r-- | contrib/gcc/output.h | 428 |
1 files changed, 428 insertions, 0 deletions
diff --git a/contrib/gcc/output.h b/contrib/gcc/output.h new file mode 100644 index 0000000..7ef8b2c --- /dev/null +++ b/contrib/gcc/output.h @@ -0,0 +1,428 @@ +/* Declarations for insn-output.c. These functions are defined in recog.c, + final.c, and varasm.c. + Copyright (C) 1987, 1991, 1994 Free Software Foundation, Inc. + +This file is part of GNU CC. + +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. + +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. + +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. */ + +/* Initialize data in final at the beginning of a compilation. */ +extern void init_final PROTO((char *)); + +/* Called at end of source file, + to output the block-profiling table for this entire compilation. */ +extern void end_final PROTO((char *)); + +/* Enable APP processing of subsequent output. + Used before the output from an `asm' statement. */ +extern void app_enable PROTO((void)); + +/* Disable APP processing of subsequent output. + Called from varasm.c before most kinds of output. */ +extern void app_disable PROTO((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 PROTO((void)); + +/* Indicate that branch shortening hasn't yet been done. */ +extern void init_insn_lengths PROTO((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)); + +/* 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)); + +/* 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 STDIO_PROTO((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 STDIO_PROTO((rtx, FILE *, int)); + +/* Output assembler code for some insns: all or part of a function. */ +extern void final STDIO_PROTO((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 STDIO_PROTO((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)); + +/* 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((char *)); + +/* Output a string of assembler code, substituting insn operands. + Defined in final.c. */ +extern void output_asm_insn PROTO((char *, rtx *)); + +/* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */ +extern void output_asm_label PROTO((rtx)); + +/* Print a memory reference operand for address X + using machine-dependent assembler syntax. */ +extern void output_address PROTO((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 STDIO_PROTO((FILE *, rtx)); + +/* Output a string of assembler code, substituting numbers, strings + and fixed syntactic prefixes. */ +extern void asm_fprintf STDIO_PROTO(PVPROTO((FILE *file, + 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 *)); + +/* Return nonzero if this function has no function calls. */ +extern int leaf_function_p PROTO((void)); + +/* Return 1 if this function uses only the registers that can be + safely renumbered. */ +extern int only_leaf_regs_used PROTO((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)); +#endif + +/* Functions in varasm.c. */ + +/* Tell assembler to switch to text section. */ +extern void text_section PROTO((void)); + +/* Tell assembler to switch to data section. */ +extern void data_section PROTO((void)); + +/* Tell assembler to switch to read-only data section. This is normally + the text section. */ +extern void readonly_data_section PROTO((void)); + +/* Determine if we're in the text section. */ +extern int in_text_section PROTO((void)); + +#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. */ +extern void named_section PROTO((tree, char *)); + +/* Tell assembler to switch to the section for function DECL. */ +extern void function_section PROTO((tree)); + +/* 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)); + +/* Decode an `asm' spec for a declaration as a register name. + Return the register number, or -1 if nothing specified, + or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized, + or -3 if ASMSPEC is `cc' and is not recognized, + 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((char *)); + +/* 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, char *, int)); + +/* Make the rtl for variable VAR be volatile. + Use this only for static variables. */ +extern void make_var_volatile PROTO((tree)); + +/* Output alignment directive to align for constant expression EXP. */ +extern void assemble_constant_align PROTO((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 *)); + +/* 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 *)); + +/* 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)); + +/* Assemble a string constant with the specified C string as contents. */ +extern void assemble_string PROTO((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. + + TOP_LEVEL is nonzero if this variable has file scope. + AT_END is nonzero if this is the special handling, at end of compilation, + 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)); + +/* Output text storage for constructor CONSTR. */ +extern void bc_output_constructor PROTO((tree, int)); + +/* Create storage for constructor CONSTR. */ +extern void bc_output_data_constructor PROTO((tree)); + +/* 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)); +#endif + +#ifdef RTX_CODE +/* Similar, for calling a library function FUN. */ +extern void assemble_external_libcall PROTO((rtx)); +#endif + +/* Declare the label NAME global. */ +extern void assemble_global PROTO((char *)); + +/* Assemble a label named NAME. */ +extern void assemble_label PROTO((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 STDIO_PROTO((FILE *, 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 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)); + +#ifdef EMUSHORT +/* Assemble the floating-point constant D into an object of size MODE. */ +extern void assemble_real PROTO((REAL_VALUE_TYPE, + enum machine_mode)); +#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)); + +/* Start deferring output of subconstants. */ +extern void defer_addressed_constants PROTO((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)); + +/* Return the size of the constant pool. */ +extern int get_pool_size PROTO((void)); + +#ifdef TREE_CODE +/* Write all the constants in the constant pool. */ +extern void output_constant_pool PROTO((char *, 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 + +/* When outputting assembler code, indicates which alternative + of the constraints was actually satisfied. */ +extern int which_alternative; + +#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 + insn output code. + + This variable is defined in final.c. */ +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; + +/* 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; + +/* Nonzero if function being compiled can call longjmp. */ + +extern int current_function_calls_longjmp; + +/* Nonzero if function being compiled can call alloca, + either as a subroutine or builtin. */ + +extern int current_function_calls_alloca; + +/* Nonzero if function being compiled receives nonlocal gotos + from nested functions. */ + +extern int current_function_has_nonlocal_label; + +/* Nonzero if function being compiled contains nested functions. */ + +extern int current_function_contains_functions; + +/* 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; + +/* 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 + +/* File in which assembler code is being written. */ + +#ifdef BUFSIZ +extern FILE *asm_out_file; +#endif |
