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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: #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
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