| 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 | #ifndef STDIO_PROTO |
| 22 | #ifdef BUFSIZ |
| 23 | #define STDIO_PROTO(ARGS) PROTO(ARGS) |
| 24 | #else |
| 25 | #define STDIO_PROTO(ARGS) () |
| 26 | #endif |
| 27 | #endif |
| 28 | |
| 29 | /* Output a string of assembler code, substituting insn operands. |
| 30 | Defined in final.c. */ |
| 31 | extern void output_asm_insn PROTO((char *, rtx *)); |
| 32 | |
| 33 | /* Output a string of assembler code, substituting numbers, strings |
| 34 | and fixed syntactic prefixes. */ |
| 35 | extern void asm_fprintf (); |
| 36 | |
| 37 | /* Print an integer constant expression in assembler syntax. |
| 38 | Addition and subtraction are the only arithmetic |
| 39 | that may appear in these expressions. */ |
| 40 | extern void output_addr_const STDIO_PROTO((FILE *, rtx)); |
| 41 | |
| 42 | /* Output a name (as found inside a symbol_ref) in assembler syntax. */ |
| 43 | extern void assemble_name STDIO_PROTO((FILE *, char *)); |
| 44 | |
| 45 | /* Replace a SUBREG with a REG or a MEM, based on the thing it is a |
| 46 | subreg of. */ |
| 47 | extern rtx alter_subreg PROTO((rtx)); |
| 48 | |
| 49 | /* When outputting assembler code, indicates which alternative |
| 50 | of the constraints was actually satisfied. */ |
| 51 | extern int which_alternative; |
| 52 | |
| 53 | /* When outputting delayed branch sequences, this rtx holds the |
| 54 | sequence being output. It is null when no delayed branch |
| 55 | sequence is being output, so it can be used as a test in the |
| 56 | insn output code. |
| 57 | |
| 58 | This variable is defined in final.c. */ |
| 59 | extern rtx final_sequence; |
| 60 | |
| 61 | /* Number of bytes of args popped by function being compiled on its return. |
| 62 | Zero if no bytes are to be popped. |
| 63 | May affect compilation of return insn or of function epilogue. */ |
| 64 | |
| 65 | extern int current_function_pops_args; |
| 66 | |
| 67 | /* Nonzero if function being compiled needs to be given an address |
| 68 | where the value should be stored. */ |
| 69 | |
| 70 | extern int current_function_returns_struct; |
| 71 | |
| 72 | /* Nonzero if function being compiled needs to |
| 73 | return the address of where it has put a structure value. */ |
| 74 | |
| 75 | extern int current_function_returns_pcc_struct; |
| 76 | |
| 77 | /* Nonzero if function being compiled needs to be passed a static chain. */ |
| 78 | |
| 79 | extern int current_function_needs_context; |
| 80 | |
| 81 | /* Nonzero if function being compiled can call setjmp. */ |
| 82 | |
| 83 | extern int current_function_calls_setjmp; |
| 84 | |
| 85 | /* Nonzero if function being compiled can call longjmp. */ |
| 86 | |
| 87 | extern int current_function_calls_longjmp; |
| 88 | |
| 89 | /* Nonzero if function being compiled can call alloca, |
| 90 | either as a subroutine or builtin. */ |
| 91 | |
| 92 | extern int current_function_calls_alloca; |
| 93 | |
| 94 | /* Nonzero if function being compiled receives nonlocal gotos |
| 95 | from nested functions. */ |
| 96 | |
| 97 | extern int current_function_has_nonlocal_label; |
| 98 | |
| 99 | /* Nonzero if function being compiled contains nested functions. */ |
| 100 | |
| 101 | extern int current_function_contains_functions; |
| 102 | |
| 103 | /* Nonzero if the current function returns a pointer type */ |
| 104 | |
| 105 | extern int current_function_returns_pointer; |
| 106 | |
| 107 | /* If function's args have a fixed size, this is that size, in bytes. |
| 108 | Otherwise, it is -1. |
| 109 | May affect compilation of return insn or of function epilogue. */ |
| 110 | |
| 111 | extern int current_function_args_size; |
| 112 | |
| 113 | /* # bytes the prologue should push and pretend that the caller pushed them. |
| 114 | The prologue must do this, but only if parms can be passed in registers. */ |
| 115 | |
| 116 | extern int current_function_pretend_args_size; |
| 117 | |
| 118 | /* # of bytes of outgoing arguments required to be pushed by the prologue. |
| 119 | If this is non-zero, it means that ACCUMULATE_OUTGOING_ARGS was defined |
| 120 | and no stack adjusts will be done on function calls. */ |
| 121 | |
| 122 | extern int current_function_outgoing_args_size; |
| 123 | |
| 124 | /* Nonzero if current function uses varargs.h or equivalent. |
| 125 | Zero for functions that use stdarg.h. */ |
| 126 | |
| 127 | extern int current_function_varargs; |
| 128 | |
| 129 | /* Quantities of various kinds of registers |
| 130 | used for the current function's args. */ |
| 131 | |
| 132 | extern CUMULATIVE_ARGS current_function_args_info; |
| 133 | |
| 134 | /* Name of function now being compiled. */ |
| 135 | |
| 136 | extern char *current_function_name; |
| 137 | |
| 138 | /* If non-zero, an RTL expression for that location at which the current |
| 139 | function returns its result. Usually equal to |
| 140 | DECL_RTL (DECL_RESULT (current_function_decl)). */ |
| 141 | |
| 142 | extern rtx current_function_return_rtx; |
| 143 | |
| 144 | /* If some insns can be deferred to the delay slots of the epilogue, the |
| 145 | delay list for them is recorded here. */ |
| 146 | |
| 147 | extern rtx current_function_epilogue_delay_list; |
| 148 | |
| 149 | /* Nonzero means generate position-independent code. |
| 150 | This is not fully implemented yet. */ |
| 151 | |
| 152 | extern int flag_pic; |
| 153 | |
| 154 | /* This is nonzero if the current function uses pic_offset_table_rtx. */ |
| 155 | extern int current_function_uses_pic_offset_table; |
| 156 | |
| 157 | /* This is nonzero if the current function uses the constant pool. */ |
| 158 | extern int current_function_uses_const_pool; |
| 159 | |
| 160 | /* The line number of the beginning of the current function. |
| 161 | sdbout.c needs this so that it can output relative linenumbers. */ |
| 162 | |
| 163 | #ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */ |
| 164 | extern int sdb_begin_function_line; |
| 165 | #endif |
| 166 | |
| 167 | /* File in which assembler code is being written. */ |
| 168 | |
| 169 | #ifdef BUFSIZ |
| 170 | extern FILE *asm_out_file; |
| 171 | #endif |