/* Declarations for insn-output.c. These functions are defined in recog.c,
final.c, and varasm.c.
- Copyright (C) 1987-1991 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1991, 1994 Free Software Foundation, Inc.
This file is part of GNU CC.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+/* Initialize data in final at the beginning of a compilation. */
+extern void init_final PROTO((char *));
+
+/* Called at end of source file,
+ to output the block-profiling table for this entire compilation. */
+extern void end_final PROTO((char *));
+
+/* Enable APP processing of subsequent output.
+ Used before the output from an `asm' statement. */
+extern void app_enable PROTO((void));
+
+/* Disable APP processing of subsequent output.
+ Called from varasm.c before most kinds of output. */
+extern void app_disable PROTO((void));
+
+/* Return the number of slots filled in the current
+ delayed branch sequence (we don't count the insn needing the
+ delay slot). Zero if not in a delayed branch sequence. */
+extern int dbr_sequence_length PROTO((void));
+
+/* Indicate that branch shortening hasn't yet been done. */
+extern void init_insn_lengths PROTO((void));
+
+#ifdef RTX_CODE
+/* Obtain the current length of an insn. If branch shortening has been done,
+ get its actual length. Otherwise, get its maximum length. */
+extern int get_attr_length PROTO((rtx));
+
+/* Make a pass over all insns and compute their actual lengths by shortening
+ any branches of variable length if possible. */
+extern void shorten_branches PROTO((rtx));
+
+/* Output assembler code for the start of a function,
+ and initialize some of the variables in this file
+ for the new function. The label for the function and associated
+ assembler pseudo-ops have already been output in
+ `assemble_start_function'. */
+extern void final_start_function STDIO_PROTO((rtx, FILE *, int));
+
+/* Output assembler code for the end of a function.
+ For clarity, args are same as those of `final_start_function'
+ even though not all of them are needed. */
+extern void final_end_function STDIO_PROTO((rtx, FILE *, int));
+
+/* Output assembler code for some insns: all or part of a function. */
+extern void final STDIO_PROTO((rtx, FILE *, int, int));
+
+/* The final scan for one insn, INSN. Args are same as in `final', except
+ that INSN is the insn being scanned. Value returned is the next insn to
+ be scanned. */
+extern rtx final_scan_insn STDIO_PROTO((rtx, FILE *, int, int, int));
+
+/* Replace a SUBREG with a REG or a MEM, based on the thing it is a
+ subreg of. */
+extern rtx alter_subreg PROTO((rtx));
+
+/* Report inconsistency between the assembler template and the operands.
+ In an `asm', it's the user's fault; otherwise, the compiler's fault. */
+extern void output_operand_lossage PROTO((char *));
/* Output a string of assembler code, substituting insn operands.
Defined in final.c. */
-extern void output_asm_insn ();
+extern void output_asm_insn PROTO((char *, rtx *));
+
+/* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */
+extern void output_asm_label PROTO((rtx));
+
+/* Print a memory reference operand for address X
+ using machine-dependent assembler syntax. */
+extern void output_address PROTO((rtx));
+
+/* Print an integer constant expression in assembler syntax.
+ Addition and subtraction are the only arithmetic
+ that may appear in these expressions. */
+extern void output_addr_const STDIO_PROTO((FILE *, rtx));
/* Output a string of assembler code, substituting numbers, strings
and fixed syntactic prefixes. */
-extern void asm_fprintf ();
+extern void asm_fprintf STDIO_PROTO(PVPROTO((FILE *file,
+ char *p, ...)));
-/* Replace a SUBREG with a REG or a MEM, based on the thing it is a
- subreg of. */
-extern rtx alter_subreg ();
+/* Split up a CONST_DOUBLE or integer constant rtx into two rtx's for single
+ words. */
+extern void split_double PROTO((rtx, rtx *, rtx *));
+
+/* Return nonzero if this function has no function calls. */
+extern int leaf_function_p PROTO((void));
+
+/* Return 1 if this function uses only the registers that can be
+ safely renumbered. */
+extern int only_leaf_regs_used PROTO((void));
+
+/* Scan IN_RTX and its subexpressions, and renumber all regs into those
+ available in leaf functions. */
+extern void leaf_renumber_regs_insn PROTO((rtx));
+#endif
+
+/* Functions in varasm.c. */
+
+/* Tell assembler to switch to text section. */
+extern void text_section PROTO((void));
+
+/* Tell assembler to switch to data section. */
+extern void data_section PROTO((void));
+
+/* Tell assembler to switch to read-only data section. This is normally
+ the text section. */
+extern void readonly_data_section PROTO((void));
+
+/* Determine if we're in the text section. */
+extern int in_text_section PROTO((void));
+
+#ifdef TREE_CODE
+/* Tell assembler to change to section NAME for DECL.
+ If DECL is NULL, just switch to section NAME.
+ If NAME is NULL, get the name from DECL.
+ If RELOC is 1, the initializer for DECL contains relocs. */
+extern void named_section PROTO((tree, char *, int));
+
+/* Tell assembler to switch to the section for function DECL. */
+extern void function_section PROTO((tree));
+
+/* Tell assembler to switch to the section for the exception table. */
+extern void exception_section PROTO((void));
+
+/* Create the rtl to represent a function, for a function definition.
+ DECL is a FUNCTION_DECL node which describes which function.
+ The rtl is stored into DECL. */
+extern void make_function_rtl PROTO((tree));
+
+/* Decode an `asm' spec for a declaration as a register name.
+ Return the register number, or -1 if nothing specified,
+ or -2 if the ASMSPEC is not `cc' or `memory' and is not recognized,
+ or -3 if ASMSPEC is `cc' and is not recognized,
+ or -4 if ASMSPEC is `memory' and is not recognized.
+ Accept an exact spelling or a decimal number.
+ Prefixes such as % are optional. */
+extern int decode_reg_name PROTO((char *));
+
+/* Create the DECL_RTL for a declaration for a static or external variable
+ or static or external function.
+ ASMSPEC, if not 0, is the string which the user specified
+ as the assembler symbol name.
+ TOP_LEVEL is nonzero if this is a file-scope variable.
+
+ This is never called for PARM_DECL nodes. */
+extern void make_decl_rtl PROTO((tree, char *, int));
+
+/* Make the rtl for variable VAR be volatile.
+ Use this only for static variables. */
+extern void make_var_volatile PROTO((tree));
+
+/* Output alignment directive to align for constant expression EXP. */
+extern void assemble_constant_align PROTO((tree));
+
+/* Output a string of literal assembler code
+ for an `asm' keyword used between functions. */
+extern void assemble_asm PROTO((tree));
+
+/* Record an element in the table of global destructors.
+ How this is done depends on what sort of assembler and linker
+ are in use.
+
+ NAME should be the name of a global function to be called
+ at exit time. This name is output using assemble_name. */
+extern void assemble_destructor PROTO((char *));
+
+/* Likewise for global constructors. */
+extern void assemble_constructor PROTO((char *));
+
+/* Likewise for entries we want to record for garbage collection.
+ Garbage collection is still under development. */
+extern void assemble_gc_entry PROTO((char *));
+
+/* Output assembler code for the constant pool of a function and associated
+ with defining the name of the function. DECL describes the function.
+ NAME is the function's name. For the constant pool, we use the current
+ constant pool data. */
+extern void assemble_start_function PROTO((tree, char *));
+
+/* Output assembler code associated with defining the size of the
+ function. DECL describes the function. NAME is the function's name. */
+extern void assemble_end_function PROTO((tree, char *));
+
+/* Assemble code to leave SIZE bytes of zeros. */
+extern void assemble_zeros PROTO((int));
+
+/* Assemble an alignment pseudo op for an ALIGN-bit boundary. */
+extern void assemble_align PROTO((int));
+
+/* Assemble a string constant with the specified C string as contents. */
+extern void assemble_string PROTO((char *, int));
+/* Assemble everything that is needed for a variable or function declaration.
+ Not used for automatic variables, and not used for function definitions.
+ Should not be called for variables of incomplete structure type.
+
+ TOP_LEVEL is nonzero if this variable has file scope.
+ AT_END is nonzero if this is the special handling, at end of compilation,
+ to define things that have had only tentative definitions.
+ DONT_OUTPUT_DATA if nonzero means don't actually output the
+ initial value (that will be done by the caller). */
+extern void assemble_variable PROTO((tree, int, int, int));
+
+/* Output text storage for constructor CONSTR. */
+extern void bc_output_constructor PROTO((tree, int));
+
+/* Create storage for constructor CONSTR. */
+extern void bc_output_data_constructor PROTO((tree));
+
+/* Output something to declare an external symbol to the assembler.
+ (Most assemblers don't need this, so we normally output nothing.)
+ Do nothing if DECL is not external. */
+extern void assemble_external PROTO((tree));
+#endif
+
+#ifdef RTX_CODE
+/* Similar, for calling a library function FUN. */
+extern void assemble_external_libcall PROTO((rtx));
+#endif
+
+/* Declare the label NAME global. */
+extern void assemble_global PROTO((char *));
+
+/* Assemble a label named NAME. */
+extern void assemble_label PROTO((char *));
+
+/* Output to FILE a reference to the assembler name of a C-level name NAME.
+ If NAME starts with a *, the rest of NAME is output verbatim.
+ Otherwise NAME is transformed in an implementation-defined way
+ (usually by the addition of an underscore).
+ Many macros in the tm file are defined to call this function. */
+extern void assemble_name STDIO_PROTO((FILE *, char *));
+
+#ifdef RTX_CODE
+/* Assemble the integer constant X into an object of SIZE bytes.
+ X must be either a CONST_INT or CONST_DOUBLE.
+
+ Return 1 if we were able to output the constant, otherwise 0. If FORCE is
+ non-zero, abort if we can't output the constant. */
+extern int assemble_integer PROTO((rtx, int, int));
+
+#ifdef EMUSHORT
+/* Assemble the floating-point constant D into an object of size MODE. */
+extern void assemble_real PROTO((REAL_VALUE_TYPE,
+ enum machine_mode));
+#endif
+#endif
+
+/* At the end of a function, forget the memory-constants
+ previously made for CONST_DOUBLEs. Mark them as not on real_constant_chain.
+ Also clear out real_constant_chain and clear out all the chain-pointers. */
+extern void clear_const_double_mem PROTO((void));
+
+/* Start deferring output of subconstants. */
+extern void defer_addressed_constants PROTO((void));
+
+/* Stop deferring output of subconstants,
+ and output now all those that have been deferred. */
+extern void output_deferred_addressed_constants PROTO((void));
+
+/* Initialize constant pool hashing for next function. */
+extern void init_const_rtx_hash_table PROTO((void));
+
+/* Return the size of the constant pool. */
+extern int get_pool_size PROTO((void));
+
+#ifdef TREE_CODE
+/* Write all the constants in the constant pool. */
+extern void output_constant_pool PROTO((char *, tree));
+
+/* Output assembler code for constant EXP to FILE, with no label.
+ This includes the pseudo-op such as ".int" or ".byte", and a newline.
+ Assumes output_addressed_constants has been done on EXP already.
+
+ Generate exactly SIZE bytes of assembler data, padding at the end
+ with zeros if necessary. SIZE must always be specified. */
+extern void output_constant PROTO((tree, int));
+#endif
/* When outputting assembler code, indicates which alternative
of the constraints was actually satisfied. */
extern int which_alternative;
+#ifdef RTX_CODE
/* When outputting delayed branch sequences, this rtx holds the
sequence being output. It is null when no delayed branch
sequence is being output, so it can be used as a test in the
This variable is defined in final.c. */
extern rtx final_sequence;
+#endif
/* Number of bytes of args popped by function being compiled on its return.
Zero if no bytes are to be popped.
extern int current_function_varargs;
+/* Nonzero if current function uses stdarg.h or equivalent.
+ Zero for functions that use varargs.h. */
+
+extern int current_function_stdarg;
+
/* Quantities of various kinds of registers
used for the current function's args. */
extern char *current_function_name;
+#ifdef RTX_CODE
/* If non-zero, an RTL expression for that location at which the current
function returns its result. Usually equal to
DECL_RTL (DECL_RESULT (current_function_decl)). */
delay list for them is recorded here. */
extern rtx current_function_epilogue_delay_list;
+#endif
+
+/* Nonzero means generate position-independent code.
+ This is not fully implemented yet. */
+
+extern int flag_pic;
/* This is nonzero if the current function uses pic_offset_table_rtx. */
extern int current_function_uses_pic_offset_table;
+/* This is nonzero if the current function uses the constant pool. */
+extern int current_function_uses_const_pool;
+
/* The line number of the beginning of the current function.
sdbout.c needs this so that it can output relative linenumbers. */
/* File in which assembler code is being written. */
-#ifdef BUFSIZ /* The hope is that any kind of stdio.h must define BUFSIZ. */
+#ifdef BUFSIZ
extern FILE *asm_out_file;
#endif
+
+/* Decide whether DECL needs to be in a writable section. RELOC is the same
+ as for SELECT_SECTION. */
+
+#define DECL_READONLY_SECTION(DECL,RELOC) \
+ (TREE_READONLY (DECL) \
+ && ! TREE_THIS_VOLATILE (DECL) \
+ && DECL_INITIAL (DECL) \
+ && (DECL_INITIAL (DECL) == error_mark_node \
+ || TREE_CONSTANT (DECL_INITIAL (DECL))) \
+ && ! (RELOC && (flag_pic || DECL_ONE_ONLY (DECL))))
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