1 /* Declarations for insn-output.c. These functions are defined in recog.c,
3 Copyright (C) 1987-1991 Free Software Foundation, Inc.
5 This file is part of GNU CC.
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)
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.
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. */
21 /* Output a string of assembler code, substituting insn operands.
22 Defined in final.c. */
23 void output_asm_insn ();
25 /* Output a string of assembler code, substituting numbers, strings
26 and fixed syntactic prefixes. */
29 /* When outputting assembler code, indicates which alternative
30 of the constraints was actually satisfied. */
31 extern int which_alternative;
33 /* When outputting delayed branch sequences, this rtx holds the
34 sequence being output. It is null when no delayed branch
35 sequence is being output, so it can be used as a test in the
38 This variable is defined in final.c. */
39 extern rtx final_sequence;
41 /* Number of bytes of args popped by function being compiled on its return.
42 Zero if no bytes are to be popped.
43 May affect compilation of return insn or of function epilogue. */
45 extern int current_function_pops_args;
47 /* Nonzero if function being compiled needs to be given an address
48 where the value should be stored. */
50 extern int current_function_returns_struct;
52 /* Nonzero if function being compiled needs to
53 return the address of where it has put a structure value. */
55 extern int current_function_returns_pcc_struct;
57 /* Nonzero if function being compiled needs to be passed a static chain. */
59 extern int current_function_needs_context;
61 /* Nonzero if function being compiled can call setjmp. */
63 extern int current_function_calls_setjmp;
65 /* Nonzero if function being compiled can call longjmp. */
67 extern int current_function_calls_longjmp;
69 /* Nonzero if function being compiled can call alloca,
70 either as a subroutine or builtin. */
72 extern int current_function_calls_alloca;
74 /* Nonzero if function being compiled receives nonlocal gotos
75 from nested functions. */
77 extern int current_function_has_nonlocal_label;
79 /* Nonzero if function being compiled contains nested functions. */
81 extern int current_function_contains_functions;
83 /* Nonzero if the current function returns a pointer type */
85 extern int current_function_returns_pointer;
87 /* If function's args have a fixed size, this is that size, in bytes.
89 May affect compilation of return insn or of function epilogue. */
91 extern int current_function_args_size;
93 /* # bytes the prologue should push and pretend that the caller pushed them.
94 The prologue must do this, but only if parms can be passed in registers. */
96 extern int current_function_pretend_args_size;
98 /* # of bytes of outgoing arguments required to be pushed by the prologue.
99 If this is non-zero, it means that ACCUMULATE_OUTGOING_ARGS was defined
100 and no stack adjusts will be done on function calls. */
102 extern int current_function_outgoing_args_size;
104 /* Nonzero if current function uses varargs.h or equivalent.
105 Zero for functions that use stdarg.h. */
107 extern int current_function_varargs;
109 /* Quantities of various kinds of registers
110 used for the current function's args. */
112 extern CUMULATIVE_ARGS current_function_args_info;
114 /* Name of function now being compiled. */
116 extern char *current_function_name;
118 /* If non-zero, an RTL expression for that location at which the current
119 function returns its result. Usually equal to
120 DECL_RTL (DECL_RESULT (current_function_decl)). */
122 extern rtx current_function_return_rtx;
124 /* If some insns can be deferred to the delay slots of the epilogue, the
125 delay list for them is recorded here. */
127 extern rtx current_function_epilogue_delay_list;
129 /* This is nonzero if the current function uses pic_offset_table_rtx. */
130 extern int current_function_uses_pic_offset_table;
132 /* The line number of the beginning of the current function.
133 sdbout.c needs this so that it can output relative linenumbers. */
135 #ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */
136 extern int sdb_begin_function_line;
139 /* File in which assembler code is being written. */
141 #ifdef BUFSIZ /* The hope is that any kind of stdio.h must define BUFSIZ. */
142 extern FILE *asm_out_file;