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Annotation of gcc/output.h, revision 1.1

1.1     ! root        1: /* Declarations for insn-output.c.  These functions are defined in recog.c,
        !             2:    final.c, and varasm.c.
        !             3:    Copyright (C) 1987, 1991 Free Software Foundation, Inc.
        !             4: 
        !             5: This file is part of GNU CC.
        !             6: 
        !             7: GNU CC is free software; you can redistribute it and/or modify
        !             8: it under the terms of the GNU General Public License as published by
        !             9: the Free Software Foundation; either version 2, or (at your option)
        !            10: any later version.
        !            11: 
        !            12: GNU CC is distributed in the hope that it will be useful,
        !            13: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            15: GNU General Public License for more details.
        !            16: 
        !            17: You should have received a copy of the GNU General Public License
        !            18: along with GNU CC; see the file COPYING.  If not, write to
        !            19: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            20: 
        !            21: /* Output a string of assembler code, substituting insn operands.
        !            22:    Defined in final.c.  */
        !            23: extern void output_asm_insn ();
        !            24: 
        !            25: /* Output a string of assembler code, substituting numbers, strings
        !            26:    and fixed syntactic prefixes.  */
        !            27: extern void asm_fprintf ();
        !            28: 
        !            29: /* Replace a SUBREG with a REG or a MEM, based on the thing it is a
        !            30:    subreg of.  */
        !            31: extern rtx alter_subreg ();
        !            32: 
        !            33: /* When outputting assembler code, indicates which alternative
        !            34:    of the constraints was actually satisfied.  */
        !            35: extern int which_alternative;
        !            36: 
        !            37: /* When outputting delayed branch sequences, this rtx holds the
        !            38:    sequence being output.  It is null when no delayed branch
        !            39:    sequence is being output, so it can be used as a test in the
        !            40:    insn output code.
        !            41: 
        !            42:    This variable is defined  in final.c.  */
        !            43: extern rtx final_sequence;
        !            44: 
        !            45: /* Number of bytes of args popped by function being compiled on its return.
        !            46:    Zero if no bytes are to be popped.
        !            47:    May affect compilation of return insn or of function epilogue.  */
        !            48: 
        !            49: extern int current_function_pops_args;
        !            50: 
        !            51: /* Nonzero if function being compiled needs to be given an address
        !            52:    where the value should be stored.  */
        !            53: 
        !            54: extern int current_function_returns_struct;
        !            55: 
        !            56: /* Nonzero if function being compiled needs to
        !            57:    return the address of where it has put a structure value.  */
        !            58: 
        !            59: extern int current_function_returns_pcc_struct;
        !            60: 
        !            61: /* Nonzero if function being compiled needs to be passed a static chain.  */
        !            62: 
        !            63: extern int current_function_needs_context;
        !            64: 
        !            65: /* Nonzero if function being compiled can call setjmp.  */
        !            66: 
        !            67: extern int current_function_calls_setjmp;
        !            68: 
        !            69: /* Nonzero if function being compiled can call longjmp.  */
        !            70: 
        !            71: extern int current_function_calls_longjmp;
        !            72: 
        !            73: /* Nonzero if function being compiled can call alloca,
        !            74:    either as a subroutine or builtin.  */
        !            75: 
        !            76: extern int current_function_calls_alloca;
        !            77: 
        !            78: /* Nonzero if function being compiled receives nonlocal gotos
        !            79:    from nested functions.  */
        !            80: 
        !            81: extern int current_function_has_nonlocal_label;
        !            82: 
        !            83: /* Nonzero if function being compiled contains nested functions.  */
        !            84: 
        !            85: extern int current_function_contains_functions;
        !            86: 
        !            87: /* Nonzero if the current function returns a pointer type */
        !            88: 
        !            89: extern int current_function_returns_pointer;
        !            90: 
        !            91: /* If function's args have a fixed size, this is that size, in bytes.
        !            92:    Otherwise, it is -1.
        !            93:    May affect compilation of return insn or of function epilogue.  */
        !            94: 
        !            95: extern int current_function_args_size;
        !            96: 
        !            97: /* # bytes the prologue should push and pretend that the caller pushed them.
        !            98:    The prologue must do this, but only if parms can be passed in registers.  */
        !            99: 
        !           100: extern int current_function_pretend_args_size;
        !           101: 
        !           102: /* # of bytes of outgoing arguments required to be pushed by the prologue.
        !           103:    If this is non-zero, it means that ACCUMULATE_OUTGOING_ARGS was defined
        !           104:    and no stack adjusts will be done on function calls.  */
        !           105: 
        !           106: extern int current_function_outgoing_args_size;
        !           107: 
        !           108: /* Nonzero if current function uses varargs.h or equivalent.
        !           109:    Zero for functions that use stdarg.h.  */
        !           110: 
        !           111: extern int current_function_varargs;
        !           112: 
        !           113: /* Quantities of various kinds of registers
        !           114:    used for the current function's args.  */
        !           115: 
        !           116: extern CUMULATIVE_ARGS current_function_args_info;
        !           117: 
        !           118: /* Name of function now being compiled.  */
        !           119: 
        !           120: extern char *current_function_name;
        !           121: 
        !           122: /* If non-zero, an RTL expression for that location at which the current
        !           123:    function returns its result.  Usually equal to
        !           124:    DECL_RTL (DECL_RESULT (current_function_decl)).  */
        !           125: 
        !           126: extern rtx current_function_return_rtx;
        !           127: 
        !           128: /* If some insns can be deferred to the delay slots of the epilogue, the
        !           129:    delay list for them is recorded here.  */
        !           130: 
        !           131: extern rtx current_function_epilogue_delay_list;
        !           132: 
        !           133: /* Nonzero means generate position-independent code.
        !           134:    This is not fully implemented yet.  */
        !           135: 
        !           136: extern int flag_pic;
        !           137: 
        !           138: /* This is nonzero if the current function uses pic_offset_table_rtx.  */
        !           139: extern int current_function_uses_pic_offset_table;
        !           140: 
        !           141: /* The line number of the beginning of the current function.
        !           142:    sdbout.c needs this so that it can output relative linenumbers.  */
        !           143: 
        !           144: #ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers.  */
        !           145: extern int sdb_begin_function_line;
        !           146: #endif
        !           147: 
        !           148: /* File in which assembler code is being written.  */
        !           149: 
        !           150: #ifdef BUFSIZ  /* The hope is that any kind of stdio.h must define BUFSIZ.  */
        !           151: extern FILE *asm_out_file;
        !           152: #endif

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