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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.
1.1.1.5 ! root 3: Copyright (C) 1987, 1991, 1994 Free Software Foundation, Inc.
1.1 root 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:
1.1.1.5 ! root 21: /* Initialize data in final at the beginning of a compilation. */
! 22: extern void init_final PROTO((char *));
! 23:
! 24: /* Called at end of source file,
! 25: to output the block-profiling table for this entire compilation. */
! 26: extern void end_final PROTO((char *));
! 27:
! 28: /* Enable APP processing of subsequent output.
! 29: Used before the output from an `asm' statement. */
! 30: extern void app_enable PROTO((void));
! 31:
! 32: /* Disable APP processing of subsequent output.
! 33: Called from varasm.c before most kinds of output. */
! 34: extern void app_disable PROTO((void));
! 35:
! 36: /* Return the number of slots filled in the current
! 37: delayed branch sequence (we don't count the insn needing the
! 38: delay slot). Zero if not in a delayed branch sequence. */
! 39: extern int dbr_sequence_length PROTO((void));
! 40:
! 41: /* Indicate that branch shortening hasn't yet been done. */
! 42: extern void init_insn_lengths PROTO((void));
! 43:
! 44: /* Obtain the current length of an insn. If branch shortening has been done,
! 45: get its actual length. Otherwise, get its maximum length. */
! 46: extern int get_attr_length PROTO((rtx));
! 47:
! 48: /* Make a pass over all insns and compute their actual lengths by shortening
! 49: any branches of variable length if possible. */
! 50: extern void shorten_branches PROTO((rtx));
! 51:
! 52: /* Output assembler code for the start of a function,
! 53: and initialize some of the variables in this file
! 54: for the new function. The label for the function and associated
! 55: assembler pseudo-ops have already been output in
! 56: `assemble_start_function'. */
! 57: extern void final_start_function STDIO_PROTO((rtx, FILE *, int));
! 58:
! 59: /* Output assembler code for the end of a function.
! 60: For clarity, args are same as those of `final_start_function'
! 61: even though not all of them are needed. */
! 62: extern void final_end_function STDIO_PROTO((rtx, FILE *, int));
! 63:
! 64: /* Output assembler code for some insns: all or part of a function. */
! 65: extern void final STDIO_PROTO((rtx, FILE *, int, int));
! 66:
! 67: /* The final scan for one insn, INSN. Args are same as in `final', except
! 68: that INSN is the insn being scanned. Value returned is the next insn to
! 69: be scanned. */
! 70: extern rtx final_scan_insn STDIO_PROTO((rtx, FILE *, int, int, int));
! 71:
! 72: /* Replace a SUBREG with a REG or a MEM, based on the thing it is a
! 73: subreg of. */
! 74: extern rtx alter_subreg PROTO((rtx));
! 75:
! 76: /* Report inconsistency between the assembler template and the operands.
! 77: In an `asm', it's the user's fault; otherwise, the compiler's fault. */
! 78: extern void output_operand_lossage PROTO((char *));
1.1.1.4 root 79:
1.1 root 80: /* Output a string of assembler code, substituting insn operands.
81: Defined in final.c. */
1.1.1.5 ! root 82: extern void output_asm_insn PROTO((char *, rtx *));
1.1 root 83:
1.1.1.5 ! root 84: /* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */
! 85: extern void output_asm_label PROTO((rtx));
! 86:
! 87: /* Print a memory reference operand for address X
! 88: using machine-dependent assembler syntax. */
! 89: extern void output_address PROTO((rtx));
1.1 root 90:
1.1.1.3 root 91: /* Print an integer constant expression in assembler syntax.
92: Addition and subtraction are the only arithmetic
93: that may appear in these expressions. */
1.1.1.4 root 94: extern void output_addr_const STDIO_PROTO((FILE *, rtx));
1.1.1.3 root 95:
1.1.1.5 ! root 96: /* Output a string of assembler code, substituting numbers, strings
! 97: and fixed syntactic prefixes. */
! 98: extern void asm_fprintf STDIO_PROTO(PVPROTO((FILE *file,
! 99: char *p, ...)));
! 100:
! 101: /* Split up a CONST_DOUBLE or integer constant rtx into two rtx's for single
! 102: words. */
! 103: extern void split_double PROTO((rtx, rtx *, rtx *));
! 104:
! 105: /* Return nonzero if this function has no function calls. */
! 106: extern int leaf_function_p PROTO((void));
! 107:
! 108: /* Return 1 if this function uses only the registers that can be
! 109: safely renumbered. */
! 110: extern int only_leaf_regs_used PROTO((void));
! 111:
! 112: /* Scan IN_RTX and its subexpressions, and renumber all regs into those
! 113: available in leaf functions. */
! 114: extern void leaf_renumber_regs_insn PROTO((rtx));
! 115:
1.1.1.3 root 116: /* Output a name (as found inside a symbol_ref) in assembler syntax. */
1.1.1.4 root 117: extern void assemble_name STDIO_PROTO((FILE *, char *));
1.1.1.3 root 118:
1.1 root 119: /* When outputting assembler code, indicates which alternative
120: of the constraints was actually satisfied. */
121: extern int which_alternative;
122:
123: /* When outputting delayed branch sequences, this rtx holds the
124: sequence being output. It is null when no delayed branch
125: sequence is being output, so it can be used as a test in the
126: insn output code.
127:
128: This variable is defined in final.c. */
129: extern rtx final_sequence;
130:
131: /* Number of bytes of args popped by function being compiled on its return.
132: Zero if no bytes are to be popped.
133: May affect compilation of return insn or of function epilogue. */
134:
135: extern int current_function_pops_args;
136:
137: /* Nonzero if function being compiled needs to be given an address
138: where the value should be stored. */
139:
140: extern int current_function_returns_struct;
141:
142: /* Nonzero if function being compiled needs to
143: return the address of where it has put a structure value. */
144:
145: extern int current_function_returns_pcc_struct;
146:
147: /* Nonzero if function being compiled needs to be passed a static chain. */
148:
149: extern int current_function_needs_context;
150:
151: /* Nonzero if function being compiled can call setjmp. */
152:
153: extern int current_function_calls_setjmp;
154:
155: /* Nonzero if function being compiled can call longjmp. */
156:
157: extern int current_function_calls_longjmp;
158:
159: /* Nonzero if function being compiled can call alloca,
160: either as a subroutine or builtin. */
161:
162: extern int current_function_calls_alloca;
163:
164: /* Nonzero if function being compiled receives nonlocal gotos
165: from nested functions. */
166:
167: extern int current_function_has_nonlocal_label;
168:
169: /* Nonzero if function being compiled contains nested functions. */
170:
171: extern int current_function_contains_functions;
172:
173: /* Nonzero if the current function returns a pointer type */
174:
175: extern int current_function_returns_pointer;
176:
177: /* If function's args have a fixed size, this is that size, in bytes.
178: Otherwise, it is -1.
179: May affect compilation of return insn or of function epilogue. */
180:
181: extern int current_function_args_size;
182:
183: /* # bytes the prologue should push and pretend that the caller pushed them.
184: The prologue must do this, but only if parms can be passed in registers. */
185:
186: extern int current_function_pretend_args_size;
187:
188: /* # of bytes of outgoing arguments required to be pushed by the prologue.
189: If this is non-zero, it means that ACCUMULATE_OUTGOING_ARGS was defined
190: and no stack adjusts will be done on function calls. */
191:
192: extern int current_function_outgoing_args_size;
193:
194: /* Nonzero if current function uses varargs.h or equivalent.
195: Zero for functions that use stdarg.h. */
196:
197: extern int current_function_varargs;
198:
199: /* Quantities of various kinds of registers
200: used for the current function's args. */
201:
202: extern CUMULATIVE_ARGS current_function_args_info;
203:
204: /* Name of function now being compiled. */
205:
206: extern char *current_function_name;
207:
208: /* If non-zero, an RTL expression for that location at which the current
209: function returns its result. Usually equal to
210: DECL_RTL (DECL_RESULT (current_function_decl)). */
211:
212: extern rtx current_function_return_rtx;
213:
214: /* If some insns can be deferred to the delay slots of the epilogue, the
215: delay list for them is recorded here. */
216:
217: extern rtx current_function_epilogue_delay_list;
218:
219: /* Nonzero means generate position-independent code.
220: This is not fully implemented yet. */
221:
222: extern int flag_pic;
223:
224: /* This is nonzero if the current function uses pic_offset_table_rtx. */
225: extern int current_function_uses_pic_offset_table;
226:
1.1.1.2 root 227: /* This is nonzero if the current function uses the constant pool. */
228: extern int current_function_uses_const_pool;
229:
1.1 root 230: /* The line number of the beginning of the current function.
231: sdbout.c needs this so that it can output relative linenumbers. */
232:
233: #ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */
234: extern int sdb_begin_function_line;
235: #endif
236:
237: /* File in which assembler code is being written. */
238:
1.1.1.4 root 239: #ifdef BUFSIZ
1.1 root 240: extern FILE *asm_out_file;
241: #endif
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