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- /* 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, 675 Mass Ave, Cambridge, MA 02139, 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));
-
- /* 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));
-
- /* Output a name (as found inside a symbol_ref) in assembler syntax. */
- extern void assemble_name STDIO_PROTO((FILE *, char *));
-
- /* When outputting assembler code, indicates which alternative
- of the constraints was actually satisfied. */
- extern int which_alternative;
-
- /* 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;
-
- /* 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;
-
- /* 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;
-
- /* 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;
-
- /* 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
-