/* Declarations for insn-output.c. These functions are defined in recog.c,
final.c, and varasm.c.
- Copyright (C) 1987, 1991, 1994 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1991, 1994, 1997, 1998,
+ 1999, 2000 Free Software Foundation, Inc.
This file is part of GNU CC.
Boston, MA 02111-1307, USA. */
/* Initialize data in final at the beginning of a compilation. */
-extern void init_final PROTO((char *));
+extern void init_final PARAMS ((const char *));
/* Called at end of source file,
to output the block-profiling table for this entire compilation. */
-extern void end_final PROTO((char *));
+extern void end_final PARAMS ((const char *));
/* Enable APP processing of subsequent output.
Used before the output from an `asm' statement. */
-extern void app_enable PROTO((void));
+extern void app_enable PARAMS ((void));
/* Disable APP processing of subsequent output.
Called from varasm.c before most kinds of output. */
-extern void app_disable PROTO((void));
+extern void app_disable PARAMS ((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));
+extern int dbr_sequence_length PARAMS ((void));
/* Indicate that branch shortening hasn't yet been done. */
-extern void init_insn_lengths PROTO((void));
+extern void init_insn_lengths PARAMS ((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));
+extern int get_attr_length PARAMS ((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));
+extern void shorten_branches PARAMS ((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));
+extern void final_start_function PARAMS ((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));
+extern void final_end_function PARAMS ((rtx, FILE *, int));
/* Output assembler code for some insns: all or part of a function. */
-extern void final STDIO_PROTO((rtx, FILE *, int, int));
+extern void final PARAMS ((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));
+extern rtx final_scan_insn PARAMS ((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));
+extern rtx alter_subreg PARAMS ((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 *));
+extern void output_operand_lossage PARAMS ((const char *));
/* Output a string of assembler code, substituting insn operands.
Defined in final.c. */
-extern void output_asm_insn PROTO((char *, rtx *));
+extern void output_asm_insn PARAMS ((const char *, rtx *));
+
+/* Compute a worst-case reference address of a branch so that it
+ can be safely used in the presence of aligned labels.
+ Defined in final.c. */
+extern int insn_current_reference_address PARAMS ((rtx));
+
+/* Find the alignment associated with a CODE_LABEL.
+ Defined in final.c. */
+extern int label_to_alignment PARAMS ((rtx));
/* Output a LABEL_REF, or a bare CODE_LABEL, as an assembler symbol. */
-extern void output_asm_label PROTO((rtx));
+extern void output_asm_label PARAMS ((rtx));
/* Print a memory reference operand for address X
using machine-dependent assembler syntax. */
-extern void output_address PROTO((rtx));
+extern void output_address PARAMS ((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));
+extern void output_addr_const PARAMS ((FILE *, rtx));
/* Output a string of assembler code, substituting numbers, strings
and fixed syntactic prefixes. */
-extern void asm_fprintf STDIO_PROTO(PVPROTO((FILE *file,
- char *p, ...)));
+extern void asm_fprintf PARAMS ((FILE *file, const char *p, ...));
/* Split up a CONST_DOUBLE or integer constant rtx into two rtx's for single
words. */
-extern void split_double PROTO((rtx, rtx *, rtx *));
+extern void split_double PARAMS ((rtx, rtx *, rtx *));
/* Return nonzero if this function has no function calls. */
-extern int leaf_function_p PROTO((void));
+extern int leaf_function_p PARAMS ((void));
/* Return 1 if this function uses only the registers that can be
safely renumbered. */
-extern int only_leaf_regs_used PROTO((void));
+extern int only_leaf_regs_used PARAMS ((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));
+extern void leaf_renumber_regs_insn PARAMS ((rtx));
+
+/* Locate the proper template for the given insn-code. */
+extern const char *get_insn_template PARAMS ((int, rtx));
+
+/* Functions in flow.c */
+extern void allocate_for_life_analysis PARAMS ((void));
+extern int regno_uninitialized PARAMS ((int));
+extern int regno_clobbered_at_setjmp PARAMS ((int));
+extern void find_basic_blocks PARAMS ((rtx, int, FILE *));
+extern void cleanup_cfg PARAMS ((void));
+extern void check_function_return_warnings PARAMS ((void));
#endif
/* Functions in varasm.c. */
/* Tell assembler to switch to text section. */
-extern void text_section PROTO((void));
+extern void text_section PARAMS ((void));
/* Tell assembler to switch to data section. */
-extern void data_section PROTO((void));
+extern void data_section PARAMS ((void));
+
+/* Tell assembler to make sure its in the data section. */
+extern void force_data_section PARAMS ((void));
/* Tell assembler to switch to read-only data section. This is normally
the text section. */
-extern void readonly_data_section PROTO((void));
+extern void readonly_data_section PARAMS ((void));
/* Determine if we're in the text section. */
-extern int in_text_section PROTO((void));
+extern int in_text_section PARAMS ((void));
+
+#ifdef EH_FRAME_SECTION_ASM_OP
+extern void eh_frame_section PARAMS ((void));
+#endif
+
+#ifdef CTORS_SECTION_ASM_OP
+extern void ctors_section PARAMS ((void));
+#endif
+
+#ifdef DTORS_SECTION_ASM_OP
+extern void dtors_section PARAMS ((void));
+#endif
+
+#ifdef BSS_SECTION_ASM_OP
+extern void bss_section PARAMS ((void));
+#endif
+
+#ifdef CONST_SECTION_ASM_OP
+extern void const_section PARAMS ((void));
+#endif
+
+#ifdef INIT_SECTION_ASM_OP
+extern void init_section PARAMS ((void));
+#endif
+
+#ifdef FINI_SECTION_ASM_OP
+extern void fini_section PARAMS ((void));
+#endif
+
+#ifdef TDESC_SECTION_ASM_OP
+extern void tdesc_section PARAMS ((void));
+#endif
#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. */
-extern void named_section PROTO((tree, char *));
+ If NAME is NULL, get the name from DECL.
+ If RELOC is 1, the initializer for DECL contains relocs. */
+extern void named_section PARAMS ((tree, const char *, int));
/* Tell assembler to switch to the section for function DECL. */
-extern void function_section PROTO((tree));
+extern void function_section PARAMS ((tree));
/* Tell assembler to switch to the section for the exception table. */
-extern void exception_section PROTO((void));
+extern void exception_section PARAMS ((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));
+/* Declare DECL to be a weak symbol. */
+extern void declare_weak PARAMS ((tree));
+#endif /* TREE_CODE */
+
+/* Emit any pending weak declarations. */
+extern void weak_finish PARAMS ((void));
/* Decode an `asm' spec for a declaration as a register name.
Return the register number, or -1 if nothing specified,
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));
+extern int decode_reg_name PARAMS ((const char *));
+#ifdef TREE_CODE
/* Make the rtl for variable VAR be volatile.
Use this only for static variables. */
-extern void make_var_volatile PROTO((tree));
+extern void make_var_volatile PARAMS ((tree));
/* Output alignment directive to align for constant expression EXP. */
-extern void assemble_constant_align PROTO((tree));
+extern void assemble_constant_align PARAMS ((tree));
+
+extern void assemble_alias PARAMS ((tree, 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 *));
+extern void assemble_asm PARAMS ((tree));
/* 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 *));
+extern void assemble_start_function PARAMS ((tree, const 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));
+extern void assemble_end_function PARAMS ((tree, const char *));
-/* 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.
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));
+extern void assemble_variable PARAMS ((tree, int, int, int));
/* 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
+extern void assemble_external PARAMS ((tree));
+#endif /* TREE_CODE */
+
+/* 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 PARAMS ((const char *));
+
+/* Likewise for global constructors. */
+extern void assemble_constructor PARAMS ((const char *));
+
+/* Likewise for entries we want to record for garbage collection.
+ Garbage collection is still under development. */
+extern void assemble_gc_entry PARAMS ((const char *));
+
+/* Assemble code to leave SIZE bytes of zeros. */
+extern void assemble_zeros PARAMS ((int));
+
+/* Assemble an alignment pseudo op for an ALIGN-bit boundary. */
+extern void assemble_align PARAMS ((int));
+extern void assemble_eh_align PARAMS ((int));
+
+/* Assemble a string constant with the specified C string as contents. */
+extern void assemble_string PARAMS ((const char *, int));
#ifdef RTX_CODE
/* Similar, for calling a library function FUN. */
-extern void assemble_external_libcall PROTO((rtx));
+extern void assemble_external_libcall PARAMS ((rtx));
#endif
/* Declare the label NAME global. */
-extern void assemble_global PROTO((char *));
+extern void assemble_global PARAMS ((const char *));
/* Assemble a label named NAME. */
-extern void assemble_label PROTO((char *));
+extern void assemble_label PARAMS ((const char *));
+extern void assemble_eh_label PARAMS ((const 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 *));
+extern void assemble_name PARAMS ((FILE *, const char *));
#ifdef RTX_CODE
/* Assemble the integer constant X into an object of SIZE bytes.
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));
+extern int assemble_integer PARAMS ((rtx, int, int));
+extern int assemble_eh_integer PARAMS ((rtx, int, int));
-#ifdef EMUSHORT
+#ifdef REAL_VALUE_TYPE
/* Assemble the floating-point constant D into an object of size MODE. */
-extern void assemble_real PROTO((REAL_VALUE_TYPE,
+extern void assemble_real PARAMS ((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));
+extern void clear_const_double_mem PARAMS ((void));
/* Start deferring output of subconstants. */
-extern void defer_addressed_constants PROTO((void));
+extern void defer_addressed_constants PARAMS ((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));
+extern void output_deferred_addressed_constants PARAMS ((void));
/* Return the size of the constant pool. */
-extern int get_pool_size PROTO((void));
+extern int get_pool_size PARAMS ((void));
+
+#ifdef HAVE_peephole
+extern rtx peephole PARAMS ((rtx));
+#endif
#ifdef TREE_CODE
/* Write all the constants in the constant pool. */
-extern void output_constant_pool PROTO((char *, tree));
+extern void output_constant_pool PARAMS ((const char *, tree));
+
+/* Return nonzero if VALUE is a valid constant-valued expression
+ for use in initializing a static variable; one that can be an
+ element of a "constant" initializer.
+
+ Return null_pointer_node if the value is absolute;
+ if it is relocatable, return the variable that determines the relocation.
+ We assume that VALUE has been folded as much as possible;
+ therefore, we do not need to check for such things as
+ arithmetic-combinations of integers. */
+extern tree initializer_constant_valid_p PARAMS ((tree, 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.
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));
+extern void output_constant PARAMS ((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
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.
- May affect compilation of return insn or of function epilogue. */
-
-extern int current_function_pops_args;
-
-/* Nonzero if function being compiled needs to be given an address
- where the value should be stored. */
-
-extern int current_function_returns_struct;
-
-/* Nonzero if function being compiled needs to
- return the address of where it has put a structure value. */
-
-extern int current_function_returns_pcc_struct;
-
-/* Nonzero if function being compiled needs to be passed a static chain. */
-
-extern int current_function_needs_context;
-
-/* Nonzero if function being compiled can call setjmp. */
-
-extern int current_function_calls_setjmp;
-
-/* Nonzero if function being compiled can call longjmp. */
-
-extern int current_function_calls_longjmp;
-
-/* Nonzero if function being compiled can call alloca,
- either as a subroutine or builtin. */
-
-extern int current_function_calls_alloca;
-
-/* Nonzero if function being compiled receives nonlocal gotos
- from nested functions. */
-
-extern int current_function_has_nonlocal_label;
-
-/* Nonzero if function being compiled contains nested functions. */
-
-extern int current_function_contains_functions;
-
-/* Nonzero if the current function returns a pointer type */
-
-extern int current_function_returns_pointer;
-
-/* If function's args have a fixed size, this is that size, in bytes.
- Otherwise, it is -1.
- May affect compilation of return insn or of function epilogue. */
-
-extern int current_function_args_size;
-
-/* # bytes the prologue should push and pretend that the caller pushed them.
- The prologue must do this, but only if parms can be passed in registers. */
+/* The line number of the beginning of the current function.
+ sdbout.c needs this so that it can output relative linenumbers. */
-extern int current_function_pretend_args_size;
+#ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */
+extern int sdb_begin_function_line;
+#endif
-/* # of bytes of outgoing arguments required to be pushed by the prologue.
- If this is non-zero, it means that ACCUMULATE_OUTGOING_ARGS was defined
- and no stack adjusts will be done on function calls. */
+/* File in which assembler code is being written. */
-extern int current_function_outgoing_args_size;
+#ifdef BUFSIZ
+extern FILE *asm_out_file;
+#endif
-/* Nonzero if current function uses varargs.h or equivalent.
- Zero for functions that use stdarg.h. */
+/* The first global object in the file. */
+extern const char *first_global_object_name;
-extern int current_function_varargs;
+/* The first weak object in the file. */
+extern const char *weak_global_object_name;
-/* Nonzero if current function uses stdarg.h or equivalent.
- Zero for functions that use varargs.h. */
+/* Nonzero if function being compiled doesn't contain any calls
+ (ignoring the prologue and epilogue). This is set prior to
+ local register allocation and is valid for the remaining
+ compiler passes. */
-extern int current_function_stdarg;
+extern int current_function_is_leaf;
-/* Quantities of various kinds of registers
- used for the current function's args. */
+/* Nonzero if function being compiled doesn't contain any instructions
+ that can throw an exception. This is set prior to final. */
-extern CUMULATIVE_ARGS current_function_args_info;
+extern int current_function_nothrow;
-/* Name of function now being compiled. */
+/* Nonzero if function being compiled doesn't modify the stack pointer
+ (ignoring the prologue and epilogue). This is only valid after
+ life_analysis has run. */
-extern char *current_function_name;
+extern int current_function_sp_is_unchanging;
-#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)). */
+/* Nonzero if the function being compiled is a leaf function which only
+ uses leaf registers. This is valid after reload (specifically after
+ sched2) and is useful only if the port defines LEAF_REGISTERS. */
-extern rtx current_function_return_rtx;
+extern int current_function_uses_only_leaf_regs;
-/* If some insns can be deferred to the delay slots of the epilogue, the
- delay list for them is recorded here. */
+/* Default file in which to dump debug output. */
-extern rtx current_function_epilogue_delay_list;
+#ifdef BUFSIZ
+extern FILE *rtl_dump_file;
#endif
-/* Nonzero means generate position-independent code.
- This is not fully implemented yet. */
+/* Nonnull if the insn currently being emitted was a COND_EXEC pattern. */
+extern struct rtx_def *current_insn_predicate;
-extern int flag_pic;
+/* Last insn processed by final_scan_insn. */
+extern struct rtx_def *current_output_insn;
-/* This is nonzero if the current function uses pic_offset_table_rtx. */
-extern int current_function_uses_pic_offset_table;
+/* Decide whether DECL needs to be in a writable section. RELOC is the same
+ as for SELECT_SECTION. */
-/* This is nonzero if the current function uses the constant pool. */
-extern int current_function_uses_const_pool;
+#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))))
-/* The line number of the beginning of the current function.
- sdbout.c needs this so that it can output relative linenumbers. */
+/* User label prefix in effect for this compilation. */
+extern const char *user_label_prefix;
-#ifdef SDB_DEBUGGING_INFO /* Avoid undef sym in certain broken linkers. */
-extern int sdb_begin_function_line;
+/* This macro gets just the user-specified name
+ out of the string in a SYMBOL_REF. On most machines,
+ we discard the * if any and that's all. */
+#ifndef STRIP_NAME_ENCODING
+#define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME) \
+ (VAR) = ((SYMBOL_NAME) + ((SYMBOL_NAME)[0] == '*'))
#endif
+/* Assign unique numbers to labels generated for profiling. */
-/* File in which assembler code is being written. */
-
-#ifdef BUFSIZ
-extern FILE *asm_out_file;
-#endif
+extern int profile_label_no;
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