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Diffstat (limited to 'gnu/usr.bin/cc/include/tree.h')
| -rw-r--r-- | gnu/usr.bin/cc/include/tree.h | 1658 |
1 files changed, 0 insertions, 1658 deletions
diff --git a/gnu/usr.bin/cc/include/tree.h b/gnu/usr.bin/cc/include/tree.h deleted file mode 100644 index 0955ad1..0000000 --- a/gnu/usr.bin/cc/include/tree.h +++ /dev/null @@ -1,1658 +0,0 @@ -/* Front-end tree definitions for GNU compiler. - Copyright (C) 1989, 1993, 1994 Free Software Foundation, Inc. - -This file is part of GNU CC. - -GNU CC is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU CC is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -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. */ - -#include "machmode.h" - -#ifndef RTX_CODE -struct rtx_def; -#endif - -/* Codes of tree nodes */ - -#define DEFTREECODE(SYM, STRING, TYPE, NARGS) SYM, - -enum tree_code { -#include "tree.def" - - LAST_AND_UNUSED_TREE_CODE /* A convenient way to get a value for - NUM_TREE_CODE. */ -}; - -#undef DEFTREECODE - -/* Number of tree codes. */ -#define NUM_TREE_CODES ((int)LAST_AND_UNUSED_TREE_CODE) - -/* Indexed by enum tree_code, contains a character which is - `<' for a comparison expression, `1', for a unary arithmetic - expression, `2' for a binary arithmetic expression, `e' for - other types of expressions, `r' for a reference, `c' for a - constant, `d' for a decl, `t' for a type, `s' for a statement, - and `x' for anything else (TREE_LIST, IDENTIFIER, etc). */ - -extern char **tree_code_type; -#define TREE_CODE_CLASS(CODE) (*tree_code_type[(int) (CODE)]) - -/* Number of argument-words in each kind of tree-node. */ - -extern int *tree_code_length; - -/* Names of tree components. */ - -extern char **tree_code_name; - -/* Codes that identify the various built in functions - so that expand_call can identify them quickly. */ - -enum built_in_function -{ - NOT_BUILT_IN, - BUILT_IN_ALLOCA, - BUILT_IN_ABS, - BUILT_IN_FABS, - BUILT_IN_LABS, - BUILT_IN_FFS, - BUILT_IN_DIV, - BUILT_IN_LDIV, - BUILT_IN_FFLOOR, - BUILT_IN_FCEIL, - BUILT_IN_FMOD, - BUILT_IN_FREM, - BUILT_IN_MEMCPY, - BUILT_IN_MEMCMP, - BUILT_IN_MEMSET, - BUILT_IN_STRCPY, - BUILT_IN_STRCMP, - BUILT_IN_STRLEN, - BUILT_IN_FSQRT, - BUILT_IN_SIN, - BUILT_IN_COS, - BUILT_IN_GETEXP, - BUILT_IN_GETMAN, - BUILT_IN_SAVEREGS, - BUILT_IN_CLASSIFY_TYPE, - BUILT_IN_NEXT_ARG, - BUILT_IN_ARGS_INFO, - BUILT_IN_CONSTANT_P, - BUILT_IN_FRAME_ADDRESS, - BUILT_IN_RETURN_ADDRESS, - BUILT_IN_CALLER_RETURN_ADDRESS, - BUILT_IN_APPLY_ARGS, - BUILT_IN_APPLY, - BUILT_IN_RETURN, - - /* C++ extensions */ - BUILT_IN_NEW, - BUILT_IN_VEC_NEW, - BUILT_IN_DELETE, - BUILT_IN_VEC_DELETE, - - /* Upper bound on non-language-specific builtins. */ - END_BUILTINS -}; - -/* The definition of tree nodes fills the next several pages. */ - -/* A tree node can represent a data type, a variable, an expression - or a statement. Each node has a TREE_CODE which says what kind of - thing it represents. Some common codes are: - INTEGER_TYPE -- represents a type of integers. - ARRAY_TYPE -- represents a type of pointer. - VAR_DECL -- represents a declared variable. - INTEGER_CST -- represents a constant integer value. - PLUS_EXPR -- represents a sum (an expression). - - As for the contents of a tree node: there are some fields - that all nodes share. Each TREE_CODE has various special-purpose - fields as well. The fields of a node are never accessed directly, - always through accessor macros. */ - -/* This type is used everywhere to refer to a tree node. */ - -typedef union tree_node *tree; - -/* Every kind of tree node starts with this structure, - so all nodes have these fields. - - See the accessor macros, defined below, for documentation of the fields. */ - -struct tree_common -{ - union tree_node *chain; - union tree_node *type; -#ifdef ONLY_INT_FIELDS - unsigned int code : 8; -#else - enum tree_code code : 8; -#endif - - unsigned side_effects_flag : 1; - unsigned constant_flag : 1; - unsigned permanent_flag : 1; - unsigned addressable_flag : 1; - unsigned volatile_flag : 1; - unsigned readonly_flag : 1; - unsigned unsigned_flag : 1; - unsigned asm_written_flag: 1; - - unsigned used_flag : 1; - unsigned raises_flag : 1; - unsigned static_flag : 1; - unsigned public_flag : 1; - unsigned private_flag : 1; - unsigned protected_flag : 1; - - unsigned lang_flag_0 : 1; - unsigned lang_flag_1 : 1; - unsigned lang_flag_2 : 1; - unsigned lang_flag_3 : 1; - unsigned lang_flag_4 : 1; - unsigned lang_flag_5 : 1; - unsigned lang_flag_6 : 1; - /* There is room for two more flags. */ -}; - -/* Define accessors for the fields that all tree nodes have - (though some fields are not used for all kinds of nodes). */ - -/* The tree-code says what kind of node it is. - Codes are defined in tree.def. */ -#define TREE_CODE(NODE) ((enum tree_code) (NODE)->common.code) -#define TREE_SET_CODE(NODE, VALUE) ((NODE)->common.code = (int) (VALUE)) - -/* In all nodes that are expressions, this is the data type of the expression. - In POINTER_TYPE nodes, this is the type that the pointer points to. - In ARRAY_TYPE nodes, this is the type of the elements. */ -#define TREE_TYPE(NODE) ((NODE)->common.type) - -/* Nodes are chained together for many purposes. - Types are chained together to record them for being output to the debugger - (see the function `chain_type'). - Decls in the same scope are chained together to record the contents - of the scope. - Statement nodes for successive statements used to be chained together. - Often lists of things are represented by TREE_LIST nodes that - are chained together. */ - -#define TREE_CHAIN(NODE) ((NODE)->common.chain) - -/* Given an expression as a tree, strip any NON_LVALUE_EXPRs and NOP_EXPRs - that don't change the machine mode. */ - -#define STRIP_NOPS(EXP) \ - while ((TREE_CODE (EXP) == NOP_EXPR \ - || TREE_CODE (EXP) == CONVERT_EXPR \ - || TREE_CODE (EXP) == NON_LVALUE_EXPR) \ - && (TYPE_MODE (TREE_TYPE (EXP)) \ - == TYPE_MODE (TREE_TYPE (TREE_OPERAND (EXP, 0))))) \ - (EXP) = TREE_OPERAND (EXP, 0); - -/* Like STRIP_NOPS, but don't alter the TREE_TYPE either. */ - -#define STRIP_TYPE_NOPS(EXP) \ - while ((TREE_CODE (EXP) == NOP_EXPR \ - || TREE_CODE (EXP) == CONVERT_EXPR \ - || TREE_CODE (EXP) == NON_LVALUE_EXPR) \ - && (TREE_TYPE (EXP) \ - == TREE_TYPE (TREE_OPERAND (EXP, 0)))) \ - (EXP) = TREE_OPERAND (EXP, 0); - -/* Nonzero if TYPE represents an integral type. Note that we do not - include COMPLEX types here. */ - -#define INTEGRAL_TYPE_P(TYPE) \ - (TREE_CODE (TYPE) == INTEGER_TYPE || TREE_CODE (TYPE) == ENUMERAL_TYPE \ - || TREE_CODE (TYPE) == BOOLEAN_TYPE || TREE_CODE (TYPE) == CHAR_TYPE) - -/* Nonzero if TYPE represents a floating-point type, including complex - floating-point types. */ - -#define FLOAT_TYPE_P(TYPE) \ - (TREE_CODE (TYPE) == REAL_TYPE \ - || (TREE_CODE (TYPE) == COMPLEX_TYPE \ - && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)) - -/* Nonzero if TYPE represents an aggregate (multi-component) type. */ - -#define AGGREGATE_TYPE_P(TYPE) \ - (TREE_CODE (TYPE) == ARRAY_TYPE || TREE_CODE (TYPE) == RECORD_TYPE \ - || TREE_CODE (TYPE) == UNION_TYPE || TREE_CODE (TYPE) == QUAL_UNION_TYPE \ - || TREE_CODE (TYPE) == SET_TYPE) - -/* Define many boolean fields that all tree nodes have. */ - -/* In VAR_DECL nodes, nonzero means address of this is needed. - So it cannot be in a register. - In a FUNCTION_DECL, nonzero means its address is needed. - So it must be compiled even if it is an inline function. - In CONSTRUCTOR nodes, it means object constructed must be in memory. - In LABEL_DECL nodes, it means a goto for this label has been seen - from a place outside all binding contours that restore stack levels. - In ..._TYPE nodes, it means that objects of this type must - be fully addressable. This means that pieces of this - object cannot go into register parameters, for example. - In IDENTIFIER_NODEs, this means that some extern decl for this name - had its address taken. That matters for inline functions. */ -#define TREE_ADDRESSABLE(NODE) ((NODE)->common.addressable_flag) - -/* In a VAR_DECL, nonzero means allocate static storage. - In a FUNCTION_DECL, nonzero if function has been defined. - In a CONSTRUCTOR, nonzero means allocate static storage. */ -#define TREE_STATIC(NODE) ((NODE)->common.static_flag) - -/* In a CONVERT_EXPR, NOP_EXPR or COMPOUND_EXPR, this means the node was - made implicitly and should not lead to an "unused value" warning. */ -#define TREE_NO_UNUSED_WARNING(NODE) ((NODE)->common.static_flag) - -/* Nonzero for a TREE_LIST or TREE_VEC node means that the derivation - chain is via a `virtual' declaration. */ -#define TREE_VIA_VIRTUAL(NODE) ((NODE)->common.static_flag) - -/* In an INTEGER_CST, REAL_CST, or COMPLEX_CST, this means there was an - overflow in folding. This is distinct from TREE_OVERFLOW because ANSI C - requires a diagnostic when overflows occur in constant expressions. */ -#define TREE_CONSTANT_OVERFLOW(NODE) ((NODE)->common.static_flag) - -/* In an IDENTIFIER_NODE, this means that assemble_name was called with - this string as an argument. */ -#define TREE_SYMBOL_REFERENCED(NODE) ((NODE)->common.static_flag) - -/* In an INTEGER_CST, REAL_CST, of COMPLEX_CST, this means there was an - overflow in folding, and no warning has been issued for this subexpression. - TREE_OVERFLOW implies TREE_CONSTANT_OVERFLOW, but not vice versa. */ -#define TREE_OVERFLOW(NODE) ((NODE)->common.public_flag) - -/* In a VAR_DECL or FUNCTION_DECL, - nonzero means name is to be accessible from outside this module. - In an identifier node, nonzero means an external declaration - accessible from outside this module was previously seen - for this name in an inner scope. */ -#define TREE_PUBLIC(NODE) ((NODE)->common.public_flag) - -/* Nonzero for TREE_LIST or TREE_VEC node means that the path to the - base class is via a `public' declaration, which preserves public - fields from the base class as public. */ -#define TREE_VIA_PUBLIC(NODE) ((NODE)->common.public_flag) - -/* Ditto, for `private' declarations. */ -#define TREE_VIA_PRIVATE(NODE) ((NODE)->common.private_flag) - -/* Nonzero for TREE_LIST node means that the path to the - base class is via a `protected' declaration, which preserves - protected fields from the base class as protected. - OVERLOADED. */ -#define TREE_VIA_PROTECTED(NODE) ((NODE)->common.protected_flag) - -/* In any expression, nonzero means it has side effects or reevaluation - of the whole expression could produce a different value. - This is set if any subexpression is a function call, a side effect - or a reference to a volatile variable. - In a ..._DECL, this is set only if the declaration said `volatile'. */ -#define TREE_SIDE_EFFECTS(NODE) ((NODE)->common.side_effects_flag) - -/* Nonzero means this expression is volatile in the C sense: - its address should be of type `volatile WHATEVER *'. - In other words, the declared item is volatile qualified. - This is used in _DECL nodes and _REF nodes. - - In a ..._TYPE node, means this type is volatile-qualified. - But use TYPE_VOLATILE instead of this macro when the node is a type, - because eventually we may make that a different bit. - - If this bit is set in an expression, so is TREE_SIDE_EFFECTS. */ -#define TREE_THIS_VOLATILE(NODE) ((NODE)->common.volatile_flag) - -/* In a VAR_DECL, PARM_DECL or FIELD_DECL, or any kind of ..._REF node, - nonzero means it may not be the lhs of an assignment. - In a ..._TYPE node, means this type is const-qualified - (but the macro TYPE_READONLY should be used instead of this macro - when the node is a type). */ -#define TREE_READONLY(NODE) ((NODE)->common.readonly_flag) - -/* Value of expression is constant. - Always appears in all ..._CST nodes. - May also appear in an arithmetic expression, an ADDR_EXPR or a CONSTRUCTOR - if the value is constant. */ -#define TREE_CONSTANT(NODE) ((NODE)->common.constant_flag) - -/* Nonzero means permanent node; - node will continue to exist for the entire compiler run. - Otherwise it will be recycled at the end of the function. */ -#define TREE_PERMANENT(NODE) ((NODE)->common.permanent_flag) - -/* In INTEGER_TYPE or ENUMERAL_TYPE nodes, means an unsigned type. - In FIELD_DECL nodes, means an unsigned bit field. - The same bit is used in functions as DECL_BUILT_IN_NONANSI. */ -#define TREE_UNSIGNED(NODE) ((NODE)->common.unsigned_flag) - -/* Nonzero in a VAR_DECL means assembler code has been written. - Nonzero in a FUNCTION_DECL means that the function has been compiled. - This is interesting in an inline function, since it might not need - to be compiled separately. - Nonzero in a RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE or ENUMERAL_TYPE - if the sdb debugging info for the type has been written. - In a BLOCK node, nonzero if reorder_blocks has already seen this block. */ -#define TREE_ASM_WRITTEN(NODE) ((NODE)->common.asm_written_flag) - -/* Nonzero in a _DECL if the name is used in its scope. - Nonzero in an expr node means inhibit warning if value is unused. - In IDENTIFIER_NODEs, this means that some extern decl for this name - was used. */ -#define TREE_USED(NODE) ((NODE)->common.used_flag) - -/* Nonzero for a tree node whose evaluation could result - in the raising of an exception. Not implemented yet. */ -#define TREE_RAISES(NODE) ((NODE)->common.raises_flag) - -/* Used in classes in C++. */ -#define TREE_PRIVATE(NODE) ((NODE)->common.private_flag) -/* Used in classes in C++. - In a BLOCK node, this is BLOCK_HANDLER_BLOCK. */ -#define TREE_PROTECTED(NODE) ((NODE)->common.protected_flag) - -/* These flags are available for each language front end to use internally. */ -#define TREE_LANG_FLAG_0(NODE) ((NODE)->common.lang_flag_0) -#define TREE_LANG_FLAG_1(NODE) ((NODE)->common.lang_flag_1) -#define TREE_LANG_FLAG_2(NODE) ((NODE)->common.lang_flag_2) -#define TREE_LANG_FLAG_3(NODE) ((NODE)->common.lang_flag_3) -#define TREE_LANG_FLAG_4(NODE) ((NODE)->common.lang_flag_4) -#define TREE_LANG_FLAG_5(NODE) ((NODE)->common.lang_flag_5) -#define TREE_LANG_FLAG_6(NODE) ((NODE)->common.lang_flag_6) - -/* Define additional fields and accessors for nodes representing constants. */ - -/* In an INTEGER_CST node. These two together make a 2-word integer. - If the data type is signed, the value is sign-extended to 2 words - even though not all of them may really be in use. - In an unsigned constant shorter than 2 words, the extra bits are 0. */ -#define TREE_INT_CST_LOW(NODE) ((NODE)->int_cst.int_cst_low) -#define TREE_INT_CST_HIGH(NODE) ((NODE)->int_cst.int_cst_high) - -#define INT_CST_LT(A, B) \ -(TREE_INT_CST_HIGH (A) < TREE_INT_CST_HIGH (B) \ - || (TREE_INT_CST_HIGH (A) == TREE_INT_CST_HIGH (B) \ - && ((unsigned HOST_WIDE_INT) TREE_INT_CST_LOW (A) \ - < (unsigned HOST_WIDE_INT) TREE_INT_CST_LOW (B)))) - -#define INT_CST_LT_UNSIGNED(A, B) \ -(((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \ - < (unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (B)) \ - || (((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (A) \ - == (unsigned HOST_WIDE_INT ) TREE_INT_CST_HIGH (B)) \ - && (((unsigned HOST_WIDE_INT) TREE_INT_CST_LOW (A) \ - < (unsigned HOST_WIDE_INT) TREE_INT_CST_LOW (B))))) - -struct tree_int_cst -{ - char common[sizeof (struct tree_common)]; - HOST_WIDE_INT int_cst_low; - HOST_WIDE_INT int_cst_high; -}; - -/* In REAL_CST, STRING_CST, COMPLEX_CST nodes, and CONSTRUCTOR nodes, - and generally in all kinds of constants that could - be given labels (rather than being immediate). */ - -#define TREE_CST_RTL(NODE) ((NODE)->real_cst.rtl) - -/* In a REAL_CST node. */ -/* We can represent a real value as either a `double' or a string. - Strings don't allow for any optimization, but they do allow - for cross-compilation. */ - -#define TREE_REAL_CST(NODE) ((NODE)->real_cst.real_cst) - -#include "real.h" - -struct tree_real_cst -{ - char common[sizeof (struct tree_common)]; - struct rtx_def *rtl; /* acts as link to register transfer language - (rtl) info */ - REAL_VALUE_TYPE real_cst; -}; - -/* In a STRING_CST */ -#define TREE_STRING_LENGTH(NODE) ((NODE)->string.length) -#define TREE_STRING_POINTER(NODE) ((NODE)->string.pointer) - -struct tree_string -{ - char common[sizeof (struct tree_common)]; - struct rtx_def *rtl; /* acts as link to register transfer language - (rtl) info */ - int length; - char *pointer; -}; - -/* In a COMPLEX_CST node. */ -#define TREE_REALPART(NODE) ((NODE)->complex.real) -#define TREE_IMAGPART(NODE) ((NODE)->complex.imag) - -struct tree_complex -{ - char common[sizeof (struct tree_common)]; - struct rtx_def *rtl; /* acts as link to register transfer language - (rtl) info */ - union tree_node *real; - union tree_node *imag; -}; - -/* Define fields and accessors for some special-purpose tree nodes. */ - -#define IDENTIFIER_LENGTH(NODE) ((NODE)->identifier.length) -#define IDENTIFIER_POINTER(NODE) ((NODE)->identifier.pointer) - -struct tree_identifier -{ - char common[sizeof (struct tree_common)]; - int length; - char *pointer; -}; - -/* In a TREE_LIST node. */ -#define TREE_PURPOSE(NODE) ((NODE)->list.purpose) -#define TREE_VALUE(NODE) ((NODE)->list.value) - -struct tree_list -{ - char common[sizeof (struct tree_common)]; - union tree_node *purpose; - union tree_node *value; -}; - -/* In a TREE_VEC node. */ -#define TREE_VEC_LENGTH(NODE) ((NODE)->vec.length) -#define TREE_VEC_ELT(NODE,I) ((NODE)->vec.a[I]) -#define TREE_VEC_END(NODE) (&((NODE)->vec.a[(NODE)->vec.length])) - -struct tree_vec -{ - char common[sizeof (struct tree_common)]; - int length; - union tree_node *a[1]; -}; - -/* Define fields and accessors for some nodes that represent expressions. */ - -/* In a SAVE_EXPR node. */ -#define SAVE_EXPR_CONTEXT(NODE) TREE_OPERAND(NODE, 1) -#define SAVE_EXPR_RTL(NODE) (*(struct rtx_def **) &(NODE)->exp.operands[2]) - -/* In a RTL_EXPR node. */ -#define RTL_EXPR_SEQUENCE(NODE) (*(struct rtx_def **) &(NODE)->exp.operands[0]) -#define RTL_EXPR_RTL(NODE) (*(struct rtx_def **) &(NODE)->exp.operands[1]) - -/* In a CALL_EXPR node. */ -#define CALL_EXPR_RTL(NODE) (*(struct rtx_def **) &(NODE)->exp.operands[2]) - -/* In a CONSTRUCTOR node. */ -#define CONSTRUCTOR_ELTS(NODE) TREE_OPERAND (NODE, 1) - -/* In ordinary expression nodes. */ -#define TREE_OPERAND(NODE, I) ((NODE)->exp.operands[I]) -#define TREE_COMPLEXITY(NODE) ((NODE)->exp.complexity) - -struct tree_exp -{ - char common[sizeof (struct tree_common)]; - int complexity; - union tree_node *operands[1]; -}; - -/* In a BLOCK node. */ -#define BLOCK_VARS(NODE) ((NODE)->block.vars) -#define BLOCK_TYPE_TAGS(NODE) ((NODE)->block.type_tags) -#define BLOCK_SUBBLOCKS(NODE) ((NODE)->block.subblocks) -#define BLOCK_SUPERCONTEXT(NODE) ((NODE)->block.supercontext) -/* Note: when changing this, make sure to find the places - that use chainon or nreverse. */ -#define BLOCK_CHAIN(NODE) TREE_CHAIN (NODE) -#define BLOCK_ABSTRACT_ORIGIN(NODE) ((NODE)->block.abstract_origin) -#define BLOCK_ABSTRACT(NODE) ((NODE)->block.abstract_flag) -#define BLOCK_END_NOTE(NODE) ((NODE)->block.end_note) - -/* Nonzero means that this block is prepared to handle exceptions - listed in the BLOCK_VARS slot. */ -#define BLOCK_HANDLER_BLOCK(NODE) ((NODE)->block.handler_block_flag) - -struct tree_block -{ - char common[sizeof (struct tree_common)]; - - unsigned handler_block_flag : 1; - unsigned abstract_flag : 1; - - union tree_node *vars; - union tree_node *type_tags; - union tree_node *subblocks; - union tree_node *supercontext; - union tree_node *abstract_origin; - struct rtx_def *end_note; -}; - -/* Define fields and accessors for nodes representing data types. */ - -/* See tree.def for documentation of the use of these fields. - Look at the documentation of the various ..._TYPE tree codes. */ - -#define TYPE_UID(NODE) ((NODE)->type.uid) -#define TYPE_SIZE(NODE) ((NODE)->type.size) -#define TYPE_MODE(NODE) ((NODE)->type.mode) -#define TYPE_VALUES(NODE) ((NODE)->type.values) -#define TYPE_DOMAIN(NODE) ((NODE)->type.values) -#define TYPE_FIELDS(NODE) ((NODE)->type.values) -#define TYPE_METHODS(NODE) ((NODE)->type.maxval) -#define TYPE_VFIELD(NODE) ((NODE)->type.minval) -#define TYPE_ARG_TYPES(NODE) ((NODE)->type.values) -#define TYPE_METHOD_BASETYPE(NODE) ((NODE)->type.maxval) -#define TYPE_OFFSET_BASETYPE(NODE) ((NODE)->type.maxval) -#define TYPE_POINTER_TO(NODE) ((NODE)->type.pointer_to) -#define TYPE_REFERENCE_TO(NODE) ((NODE)->type.reference_to) -#define TYPE_MIN_VALUE(NODE) ((NODE)->type.minval) -#define TYPE_MAX_VALUE(NODE) ((NODE)->type.maxval) -#define TYPE_PRECISION(NODE) ((NODE)->type.precision) -#define TYPE_PARSE_INFO(NODE) ((NODE)->type.parse_info) -#define TYPE_SYMTAB_ADDRESS(NODE) ((NODE)->type.symtab.address) -#define TYPE_SYMTAB_POINTER(NODE) ((NODE)->type.symtab.pointer) -#define TYPE_NAME(NODE) ((NODE)->type.name) -#define TYPE_NEXT_VARIANT(NODE) ((NODE)->type.next_variant) -#define TYPE_MAIN_VARIANT(NODE) ((NODE)->type.main_variant) -#define TYPE_BINFO(NODE) ((NODE)->type.binfo) -#define TYPE_NONCOPIED_PARTS(NODE) ((NODE)->type.noncopied_parts) -#define TYPE_CONTEXT(NODE) ((NODE)->type.context) -#define TYPE_OBSTACK(NODE) ((NODE)->type.obstack) -#define TYPE_LANG_SPECIFIC(NODE) ((NODE)->type.lang_specific) - -/* A TREE_LIST of IDENTIFIER nodes of the attributes that apply - to this type. */ -#define TYPE_ATTRIBUTES(NODE) ((NODE)->type.attributes) - -/* The alignment necessary for objects of this type. - The value is an int, measured in bits. */ -#define TYPE_ALIGN(NODE) ((NODE)->type.align) - -#define TYPE_STUB_DECL(NODE) (TREE_CHAIN (NODE)) - -/* In a RECORD_TYPE, UNION_TYPE or QUAL_UNION_TYPE, it means the type - has BLKmode only because it lacks the alignment requirement for - its size. */ -#define TYPE_NO_FORCE_BLK(NODE) ((NODE)->type.no_force_blk_flag) - -/* Nonzero in a type considered volatile as a whole. */ -#define TYPE_VOLATILE(NODE) ((NODE)->common.volatile_flag) - -/* Means this type is const-qualified. */ -#define TYPE_READONLY(NODE) ((NODE)->common.readonly_flag) - -/* These flags are available for each language front end to use internally. */ -#define TYPE_LANG_FLAG_0(NODE) ((NODE)->type.lang_flag_0) -#define TYPE_LANG_FLAG_1(NODE) ((NODE)->type.lang_flag_1) -#define TYPE_LANG_FLAG_2(NODE) ((NODE)->type.lang_flag_2) -#define TYPE_LANG_FLAG_3(NODE) ((NODE)->type.lang_flag_3) -#define TYPE_LANG_FLAG_4(NODE) ((NODE)->type.lang_flag_4) -#define TYPE_LANG_FLAG_5(NODE) ((NODE)->type.lang_flag_5) -#define TYPE_LANG_FLAG_6(NODE) ((NODE)->type.lang_flag_6) - -/* If set in an ARRAY_TYPE, indicates a string type (for languages - that distinguish string from array of char). - If set in a SET_TYPE, indicates a bitstring type. */ -#define TYPE_STRING_FLAG(NODE) ((NODE)->type.string_flag) - -/* Indicates that objects of this type must be initialized by calling a - function when they are created. */ -#define TYPE_NEEDS_CONSTRUCTING(NODE) ((NODE)->type.needs_constructing_flag) - -/* Indicates that objects of this type (a UNION_TYPE), should be passed - the same way that the first union alternative would be passed. */ -#define TYPE_TRANSPARENT_UNION(NODE) ((NODE)->type.transparent_union_flag) - -struct tree_type -{ - char common[sizeof (struct tree_common)]; - union tree_node *values; - union tree_node *size; - union tree_node *attributes; - unsigned uid; - - unsigned char precision; -#ifdef ONLY_INT_FIELDS - int mode : 8; -#else - enum machine_mode mode : 8; -#endif - - unsigned string_flag : 1; - unsigned no_force_blk_flag : 1; - unsigned needs_constructing_flag : 1; - unsigned transparent_union_flag : 1; - unsigned lang_flag_0 : 1; - unsigned lang_flag_1 : 1; - unsigned lang_flag_2 : 1; - unsigned lang_flag_3 : 1; - unsigned lang_flag_4 : 1; - unsigned lang_flag_5 : 1; - unsigned lang_flag_6 : 1; - /* room for 5 more bits */ - - unsigned int align; - union tree_node *pointer_to; - union tree_node *reference_to; - int parse_info; - union {int address; char *pointer; } symtab; - union tree_node *name; - union tree_node *minval; - union tree_node *maxval; - union tree_node *next_variant; - union tree_node *main_variant; - union tree_node *binfo; - union tree_node *noncopied_parts; - union tree_node *context; - struct obstack *obstack; - /* Points to a structure whose details depend on the language in use. */ - struct lang_type *lang_specific; -}; - -/* Define accessor macros for information about type inheritance - and basetypes. - - A "basetype" means a particular usage of a data type for inheritance - in another type. Each such basetype usage has its own "binfo" - object to describe it. The binfo object is a TREE_VEC node. - - Inheritance is represented by the binfo nodes allocated for a - given type. For example, given types C and D, such that D is - inherited by C, 3 binfo nodes will be allocated: one for describing - the binfo properties of C, similarly one for D, and one for - describing the binfo properties of D as a base type for C. - Thus, given a pointer to class C, one can get a pointer to the binfo - of D acting as a basetype for C by looking at C's binfo's basetypes. */ - -/* The actual data type node being inherited in this basetype. */ -#define BINFO_TYPE(NODE) TREE_TYPE (NODE) - -/* The offset where this basetype appears in its containing type. - BINFO_OFFSET slot holds the offset (in bytes) - from the base of the complete object to the base of the part of the - object that is allocated on behalf of this `type'. - This is always 0 except when there is multiple inheritance. */ - -#define BINFO_OFFSET(NODE) TREE_VEC_ELT ((NODE), 1) -#define TYPE_BINFO_OFFSET(NODE) BINFO_OFFSET (TYPE_BINFO (NODE)) -#define BINFO_OFFSET_ZEROP(NODE) (BINFO_OFFSET (NODE) == integer_zero_node) - -/* The virtual function table belonging to this basetype. Virtual - function tables provide a mechanism for run-time method dispatching. - The entries of a virtual function table are language-dependent. */ - -#define BINFO_VTABLE(NODE) TREE_VEC_ELT ((NODE), 2) -#define TYPE_BINFO_VTABLE(NODE) BINFO_VTABLE (TYPE_BINFO (NODE)) - -/* The virtual functions in the virtual function table. This is - a TREE_LIST that is used as an initial approximation for building - a virtual function table for this basetype. */ -#define BINFO_VIRTUALS(NODE) TREE_VEC_ELT ((NODE), 3) -#define TYPE_BINFO_VIRTUALS(NODE) BINFO_VIRTUALS (TYPE_BINFO (NODE)) - -/* A vector of additional binfos for the types inherited by this basetype. - - If this basetype describes type D as inherited in C, - and if the basetypes of D are E anf F, - then this vector contains binfos for inheritance of E and F by C. - - ??? This could probably be done by just allocating the - base types at the end of this TREE_VEC (instead of using - another TREE_VEC). This would simplify the calculation - of how many basetypes a given type had. */ -#define BINFO_BASETYPES(NODE) TREE_VEC_ELT ((NODE), 4) -#define TYPE_BINFO_BASETYPES(NODE) TREE_VEC_ELT (TYPE_BINFO (NODE), 4) - -/* For a BINFO record describing an inheritance, this yields a pointer - to the artificial FIELD_DECL node which contains the "virtual base - class pointer" for the given inheritance. */ - -#define BINFO_VPTR_FIELD(NODE) TREE_VEC_ELT ((NODE), 5) - -/* Accessor macro to get to the Nth basetype of this basetype. */ -#define BINFO_BASETYPE(NODE,N) TREE_VEC_ELT (BINFO_BASETYPES (NODE), (N)) -#define TYPE_BINFO_BASETYPE(NODE,N) BINFO_TYPE (TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (NODE)), (N))) - -/* Slot used to build a chain that represents a use of inheritance. - For example, if X is derived from Y, and Y is derived from Z, - then this field can be used to link the binfo node for X to - the binfo node for X's Y to represent the use of inheritance - from X to Y. Similarly, this slot of the binfo node for X's Y - can point to the Z from which Y is inherited (in X's inheritance - hierarchy). In this fashion, one can represent and traverse specific - uses of inheritance using the binfo nodes themselves (instead of - consing new space pointing to binfo nodes). - It is up to the language-dependent front-ends to maintain - this information as necessary. */ -#define BINFO_INHERITANCE_CHAIN(NODE) TREE_VEC_ELT ((NODE), 0) - -/* Define fields and accessors for nodes representing declared names. */ - -/* This is the name of the object as written by the user. - It is an IDENTIFIER_NODE. */ -#define DECL_NAME(NODE) ((NODE)->decl.name) -/* This is the name of the object as the assembler will see it - (but before any translations made by ASM_OUTPUT_LABELREF). - Often this is the same as DECL_NAME. - It is an IDENTIFIER_NODE. */ -#define DECL_ASSEMBLER_NAME(NODE) ((NODE)->decl.assembler_name) -/* Records the section name in a section attribute. Used to pass - the name from decl_attributes to make_function_rtl and make_decl_rtl. */ -#define DECL_SECTION_NAME(NODE) ((NODE)->decl.section_name) -/* For FIELD_DECLs, this is the - RECORD_TYPE, UNION_TYPE, or QUAL_UNION_TYPE node that the field is - a member of. For VAR_DECL, PARM_DECL, FUNCTION_DECL, LABEL_DECL, - and CONST_DECL nodes, this points to the FUNCTION_DECL for the - containing function, or else yields NULL_TREE if the given decl has "file scope". */ -#define DECL_CONTEXT(NODE) ((NODE)->decl.context) -#define DECL_FIELD_CONTEXT(NODE) ((NODE)->decl.context) -/* In a FIELD_DECL, this is the field position, counting in bits, - of the bit closest to the beginning of the structure. */ -#define DECL_FIELD_BITPOS(NODE) ((NODE)->decl.arguments) -/* In a FIELD_DECL, this indicates whether the field was a bit-field and - if so, the type that was originally specified for it. - TREE_TYPE may have been modified (in finish_struct). */ -#define DECL_BIT_FIELD_TYPE(NODE) ((NODE)->decl.result) -/* In FUNCTION_DECL, a chain of ..._DECL nodes. */ -/* VAR_DECL and PARM_DECL reserve the arguments slot - for language-specific uses. */ -#define DECL_ARGUMENTS(NODE) ((NODE)->decl.arguments) -/* In FUNCTION_DECL, holds the decl for the return value. */ -#define DECL_RESULT(NODE) ((NODE)->decl.result) -/* In PARM_DECL, holds the type as written (perhaps a function or array). */ -#define DECL_ARG_TYPE_AS_WRITTEN(NODE) ((NODE)->decl.result) -/* For a FUNCTION_DECL, holds the tree of BINDINGs. - For a VAR_DECL, holds the initial value. - For a PARM_DECL, not used--default - values for parameters are encoded in the type of the function, - not in the PARM_DECL slot. */ -#define DECL_INITIAL(NODE) ((NODE)->decl.initial) -/* For a PARM_DECL, records the data type used to pass the argument, - which may be different from the type seen in the program. */ -#define DECL_ARG_TYPE(NODE) ((NODE)->decl.initial) /* In PARM_DECL. */ -/* For a FIELD_DECL in a QUAL_UNION_TYPE, records the expression, which - if nonzero, indicates that the field occupies the type. */ -#define DECL_QUALIFIER(NODE) ((NODE)->decl.initial) -/* These two fields describe where in the source code the declaration was. */ -#define DECL_SOURCE_FILE(NODE) ((NODE)->decl.filename) -#define DECL_SOURCE_LINE(NODE) ((NODE)->decl.linenum) -/* Holds the size of the datum, as a tree expression. - Need not be constant. */ -#define DECL_SIZE(NODE) ((NODE)->decl.size) -/* Holds the alignment required for the datum. */ -#define DECL_ALIGN(NODE) ((NODE)->decl.frame_size.u) -/* Holds the machine mode corresponding to the declaration of a variable or - field. Always equal to TYPE_MODE (TREE_TYPE (decl)) except for a - FIELD_DECL. */ -#define DECL_MODE(NODE) ((NODE)->decl.mode) -/* Holds the RTL expression for the value of a variable or function. If - PROMOTED_MODE is defined, the mode of this expression may not be same - as DECL_MODE. In that case, DECL_MODE contains the mode corresponding - to the variable's data type, while the mode - of DECL_RTL is the mode actually used to contain the data. */ -#define DECL_RTL(NODE) ((NODE)->decl.rtl) -/* For PARM_DECL, holds an RTL for the stack slot or register - where the data was actually passed. */ -#define DECL_INCOMING_RTL(NODE) ((NODE)->decl.saved_insns.r) -/* For FUNCTION_DECL, if it is inline, holds the saved insn chain. */ -#define DECL_SAVED_INSNS(NODE) ((NODE)->decl.saved_insns.r) -/* For FUNCTION_DECL, if it is inline, - holds the size of the stack frame, as an integer. */ -#define DECL_FRAME_SIZE(NODE) ((NODE)->decl.frame_size.i) -/* For FUNCTION_DECL, if it is built-in, - this identifies which built-in operation it is. */ -#define DECL_FUNCTION_CODE(NODE) ((NODE)->decl.frame_size.f) -#define DECL_SET_FUNCTION_CODE(NODE,VAL) ((NODE)->decl.frame_size.f = (VAL)) -/* For a FIELD_DECL, holds the size of the member as an integer. */ -#define DECL_FIELD_SIZE(NODE) ((NODE)->decl.saved_insns.i) - -/* The DECL_VINDEX is used for FUNCTION_DECLS in two different ways. - Before the struct containing the FUNCTION_DECL is laid out, - DECL_VINDEX may point to a FUNCTION_DECL in a base class which - is the FUNCTION_DECL which this FUNCTION_DECL will replace as a virtual - function. When the class is laid out, this pointer is changed - to an INTEGER_CST node which is suitable for use as an index - into the virtual function table. */ -#define DECL_VINDEX(NODE) ((NODE)->decl.vindex) -/* For FIELD_DECLS, DECL_FCONTEXT is the *first* baseclass in - which this FIELD_DECL is defined. This information is needed when - writing debugging information about vfield and vbase decls for C++. */ -#define DECL_FCONTEXT(NODE) ((NODE)->decl.vindex) - -/* Every ..._DECL node gets a unique number. */ -#define DECL_UID(NODE) ((NODE)->decl.uid) - -/* For any sort of a ..._DECL node, this points to the original (abstract) - decl node which this decl is an instance of, or else it is NULL indicating - that this decl is not an instance of some other decl. */ -#define DECL_ABSTRACT_ORIGIN(NODE) ((NODE)->decl.abstract_origin) - -/* Nonzero for any sort of ..._DECL node means this decl node represents - an inline instance of some original (abstract) decl from an inline function; - suppress any warnings about shadowing some other variable. */ -#define DECL_FROM_INLINE(NODE) (DECL_ABSTRACT_ORIGIN (NODE) != (tree) 0) - -/* Nonzero if a _DECL means that the name of this decl should be ignored - for symbolic debug purposes. */ -#define DECL_IGNORED_P(NODE) ((NODE)->decl.ignored_flag) - -/* Nonzero for a given ..._DECL node means that this node represents an - "abstract instance" of the given declaration (e.g. in the original - declaration of an inline function). When generating symbolic debugging - information, we musn't try to generate any address information for nodes - marked as "abstract instances" because we don't actually generate - any code or allocate any data space for such instances. */ -#define DECL_ABSTRACT(NODE) ((NODE)->decl.abstract_flag) - -/* Nonzero if a _DECL means that no warnings should be generated just - because this decl is unused. */ -#define DECL_IN_SYSTEM_HEADER(NODE) ((NODE)->decl.in_system_header_flag) - -/* Nonzero for a given ..._DECL node means that this node should be - put in .common, if possible. If a DECL_INITIAL is given, and it - is not error_mark_node, then the decl cannot be put in .common. */ -#define DECL_COMMON(NODE) ((NODE)->decl.common_flag) - -/* Language-specific decl information. */ -#define DECL_LANG_SPECIFIC(NODE) ((NODE)->decl.lang_specific) - -/* In a VAR_DECL or FUNCTION_DECL, - nonzero means external reference: - do not allocate storage, and refer to a definition elsewhere. */ -#define DECL_EXTERNAL(NODE) ((NODE)->decl.external_flag) - -/* In a TYPE_DECL - nonzero means the detail info about this type is not dumped into stabs. - Instead it will generate cross reference ('x') of names. - This uses the same flag as DECL_EXTERNAL. */ -#define TYPE_DECL_SUPPRESS_DEBUG(NODE) ((NODE)->decl.external_flag) - - -/* In VAR_DECL and PARM_DECL nodes, nonzero means declared `register'. - In LABEL_DECL nodes, nonzero means that an error message about - jumping into such a binding contour has been printed for this label. */ -#define DECL_REGISTER(NODE) ((NODE)->decl.regdecl_flag) -/* In a FIELD_DECL, indicates this field should be bit-packed. */ -#define DECL_PACKED(NODE) ((NODE)->decl.regdecl_flag) - -/* Nonzero in a ..._DECL means this variable is ref'd from a nested function. - For VAR_DECL nodes, PARM_DECL nodes, and FUNCTION_DECL nodes. - - For LABEL_DECL nodes, nonzero if nonlocal gotos to the label are permitted. - - Also set in some languages for variables, etc., outside the normal - lexical scope, such as class instance variables. */ -#define DECL_NONLOCAL(NODE) ((NODE)->decl.nonlocal_flag) - -/* Nonzero in a FUNCTION_DECL means this function can be substituted - where it is called. */ -#define DECL_INLINE(NODE) ((NODE)->decl.inline_flag) - -/* Nonzero in a FUNCTION_DECL means this is a built-in function - that is not specified by ansi C and that users are supposed to be allowed - to redefine for any purpose whatever. */ -#define DECL_BUILT_IN_NONANSI(NODE) ((NODE)->common.unsigned_flag) - -/* Nonzero in a FIELD_DECL means it is a bit field, and must be accessed - specially. */ -#define DECL_BIT_FIELD(NODE) ((NODE)->decl.bit_field_flag) -/* In a LABEL_DECL, nonzero means label was defined inside a binding - contour that restored a stack level and which is now exited. */ -#define DECL_TOO_LATE(NODE) ((NODE)->decl.bit_field_flag) -/* In a FUNCTION_DECL, nonzero means a built in function. */ -#define DECL_BUILT_IN(NODE) ((NODE)->decl.bit_field_flag) -/* In a VAR_DECL that's static, - nonzero if the space is in the text section. */ -#define DECL_IN_TEXT_SECTION(NODE) ((NODE)->decl.bit_field_flag) - -/* Used in VAR_DECLs to indicate that the variable is a vtable. - It is also used in FIELD_DECLs for vtable pointers. */ -#define DECL_VIRTUAL_P(NODE) ((NODE)->decl.virtual_flag) - -/* Used to indicate that the linkage status of this DECL is not yet known, - so it should not be output now. */ -#define DECL_DEFER_OUTPUT(NODE) ((NODE)->decl.defer_output) - -/* Used in PARM_DECLs whose type are unions to indicate that the - argument should be passed in the same way that the first union - alternative would be passed. */ -#define DECL_TRANSPARENT_UNION(NODE) ((NODE)->decl.transparent_union) - -/* Additional flags for language-specific uses. */ -#define DECL_LANG_FLAG_0(NODE) ((NODE)->decl.lang_flag_0) -#define DECL_LANG_FLAG_1(NODE) ((NODE)->decl.lang_flag_1) -#define DECL_LANG_FLAG_2(NODE) ((NODE)->decl.lang_flag_2) -#define DECL_LANG_FLAG_3(NODE) ((NODE)->decl.lang_flag_3) -#define DECL_LANG_FLAG_4(NODE) ((NODE)->decl.lang_flag_4) -#define DECL_LANG_FLAG_5(NODE) ((NODE)->decl.lang_flag_5) -#define DECL_LANG_FLAG_6(NODE) ((NODE)->decl.lang_flag_6) -#define DECL_LANG_FLAG_7(NODE) ((NODE)->decl.lang_flag_7) - -struct tree_decl -{ - char common[sizeof (struct tree_common)]; - char *filename; - int linenum; - union tree_node *size; - unsigned int uid; -#ifdef ONLY_INT_FIELDS - int mode : 8; -#else - enum machine_mode mode : 8; -#endif - - unsigned external_flag : 1; - unsigned nonlocal_flag : 1; - unsigned regdecl_flag : 1; - unsigned inline_flag : 1; - unsigned bit_field_flag : 1; - unsigned virtual_flag : 1; - unsigned ignored_flag : 1; - unsigned abstract_flag : 1; - - unsigned in_system_header_flag : 1; - unsigned common_flag : 1; - unsigned defer_output : 1; - unsigned transparent_union : 1; - /* room for four more */ - - unsigned lang_flag_0 : 1; - unsigned lang_flag_1 : 1; - unsigned lang_flag_2 : 1; - unsigned lang_flag_3 : 1; - unsigned lang_flag_4 : 1; - unsigned lang_flag_5 : 1; - unsigned lang_flag_6 : 1; - unsigned lang_flag_7 : 1; - - union tree_node *name; - union tree_node *context; - union tree_node *arguments; - union tree_node *result; - union tree_node *initial; - union tree_node *abstract_origin; - union tree_node *assembler_name; - union tree_node *section_name; - struct rtx_def *rtl; /* acts as link to register transfer language - (rtl) info */ - /* For a FUNCTION_DECL, if inline, this is the size of frame needed. - If built-in, this is the code for which built-in function. - For other kinds of decls, this is DECL_ALIGN. */ - union { - int i; - unsigned int u; - enum built_in_function f; - } frame_size; - /* For FUNCTION_DECLs: points to insn that constitutes its definition - on the permanent obstack. For any other kind of decl, this is the - alignment. */ - union { - struct rtx_def *r; - int i; - } saved_insns; - union tree_node *vindex; - /* Points to a structure whose details depend on the language in use. */ - struct lang_decl *lang_specific; -}; - -/* Define the overall contents of a tree node. - It may be any of the structures declared above - for various types of node. */ - -union tree_node -{ - struct tree_common common; - struct tree_int_cst int_cst; - struct tree_real_cst real_cst; - struct tree_string string; - struct tree_complex complex; - struct tree_identifier identifier; - struct tree_decl decl; - struct tree_type type; - struct tree_list list; - struct tree_vec vec; - struct tree_exp exp; - struct tree_block block; - }; - -/* Add prototype support. */ -#ifndef PROTO -#if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__) -#define PROTO(ARGS) ARGS -#else -#define PROTO(ARGS) () -#endif -#endif - -#ifndef VPROTO -#ifdef __STDC__ -#define PVPROTO(ARGS) ARGS -#define VPROTO(ARGS) ARGS -#define VA_START(va_list,var) va_start(va_list,var) -#else -#define PVPROTO(ARGS) () -#define VPROTO(ARGS) (va_alist) va_dcl -#define VA_START(va_list,var) va_start(va_list) -#endif -#endif - -#ifndef STDIO_PROTO -#ifdef BUFSIZ -#define STDIO_PROTO(ARGS) PROTO(ARGS) -#else -#define STDIO_PROTO(ARGS) () -#endif -#endif - -#define NULL_TREE (tree) NULL - -/* Define a generic NULL if one hasn't already been defined. */ - -#ifndef NULL -#define NULL 0 -#endif - -#ifndef GENERIC_PTR -#if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__) -#define GENERIC_PTR void * -#else -#define GENERIC_PTR char * -#endif -#endif - -#ifndef NULL_PTR -#define NULL_PTR ((GENERIC_PTR)0) -#endif - -/* The following functions accept a wide integer argument. Rather than - having to cast on every function call, we use a macro instead, that is - defined here and in rtl.h. */ - -#ifndef exact_log2 -#define exact_log2(N) exact_log2_wide ((HOST_WIDE_INT) (N)) -#define floor_log2(N) floor_log2_wide ((HOST_WIDE_INT) (N)) -#endif - -#if 0 -/* At present, don't prototype xrealloc, since all of the callers don't - cast their pointers to char *, and all of the xrealloc's don't use - void * yet. */ -extern char *xmalloc PROTO((size_t)); -extern char *xrealloc PROTO((void *, size_t)); -#else -extern char *xmalloc (); -extern char *xrealloc (); -#endif - -extern char *oballoc PROTO((int)); -extern char *permalloc PROTO((int)); -extern char *savealloc PROTO((int)); -extern void free PROTO((void *)); - -/* Lowest level primitive for allocating a node. - The TREE_CODE is the only argument. Contents are initialized - to zero except for a few of the common fields. */ - -extern tree make_node PROTO((enum tree_code)); - -/* Make a copy of a node, with all the same contents except - for TREE_PERMANENT. (The copy is permanent - iff nodes being made now are permanent.) */ - -extern tree copy_node PROTO((tree)); - -/* Make a copy of a chain of TREE_LIST nodes. */ - -extern tree copy_list PROTO((tree)); - -/* Make a TREE_VEC. */ - -extern tree make_tree_vec PROTO((int)); - -/* Return the (unique) IDENTIFIER_NODE node for a given name. - The name is supplied as a char *. */ - -extern tree get_identifier PROTO((char *)); - -/* Construct various types of nodes. */ - -#define build_int_2(LO,HI) \ - build_int_2_wide ((HOST_WIDE_INT) (LO), (HOST_WIDE_INT) (HI)) - -extern tree build PVPROTO((enum tree_code, tree, ...)); -extern tree build_nt PVPROTO((enum tree_code, ...)); -extern tree build_parse_node PVPROTO((enum tree_code, ...)); - -extern tree build_int_2_wide PROTO((HOST_WIDE_INT, HOST_WIDE_INT)); -extern tree build_real PROTO((tree, REAL_VALUE_TYPE)); -extern tree build_real_from_int_cst PROTO((tree, tree)); -extern tree build_complex PROTO((tree, tree)); -extern tree build_string PROTO((int, char *)); -extern tree build1 PROTO((enum tree_code, tree, tree)); -extern tree build_tree_list PROTO((tree, tree)); -extern tree build_decl_list PROTO((tree, tree)); -extern tree build_decl PROTO((enum tree_code, tree, tree)); -extern tree build_block PROTO((tree, tree, tree, tree, tree)); - -/* Construct various nodes representing data types. */ - -extern tree make_signed_type PROTO((int)); -extern tree make_unsigned_type PROTO((int)); -extern tree signed_or_unsigned_type PROTO((int, tree)); -extern void fixup_unsigned_type PROTO((tree)); -extern tree build_pointer_type PROTO((tree)); -extern tree build_reference_type PROTO((tree)); -extern tree build_index_type PROTO((tree)); -extern tree build_index_2_type PROTO((tree, tree)); -extern tree build_array_type PROTO((tree, tree)); -extern tree build_function_type PROTO((tree, tree)); -extern tree build_method_type PROTO((tree, tree)); -extern tree build_offset_type PROTO((tree, tree)); -extern tree build_complex_type PROTO((tree)); -extern tree array_type_nelts PROTO((tree)); - -extern tree value_member PROTO((tree, tree)); -extern tree purpose_member PROTO((tree, tree)); -extern tree binfo_member PROTO((tree, tree)); -extern int attribute_list_equal PROTO((tree, tree)); -extern int attribute_list_contained PROTO((tree, tree)); -extern int tree_int_cst_equal PROTO((tree, tree)); -extern int tree_int_cst_lt PROTO((tree, tree)); -extern int tree_int_cst_sgn PROTO((tree)); -extern int index_type_equal PROTO((tree, tree)); - -/* From expmed.c. Since rtl.h is included after tree.h, we can't - put the prototype here. Rtl.h does declare the prototype if - tree.h had been included. */ - -extern tree make_tree (); - -/* Return a type like TTYPE except that its TYPE_ATTRIBUTES - is ATTRIBUTE. - - Such modified types already made are recorded so that duplicates - are not made. */ - -extern tree build_type_attribute_variant PROTO((tree, tree)); - -/* Given a type node TYPE, and CONSTP and VOLATILEP, return a type - for the same kind of data as TYPE describes. - Variants point to the "main variant" (which has neither CONST nor VOLATILE) - via TYPE_MAIN_VARIANT, and it points to a chain of other variants - so that duplicate variants are never made. - Only main variants should ever appear as types of expressions. */ - -extern tree build_type_variant PROTO((tree, int, int)); - -/* Make a copy of a type node. */ - -extern tree build_type_copy PROTO((tree)); - -/* Given a ..._TYPE node, calculate the TYPE_SIZE, TYPE_SIZE_UNIT, - TYPE_ALIGN and TYPE_MODE fields. - If called more than once on one node, does nothing except - for the first time. */ - -extern void layout_type PROTO((tree)); - -/* Given a hashcode and a ..._TYPE node (for which the hashcode was made), - return a canonicalized ..._TYPE node, so that duplicates are not made. - How the hash code is computed is up to the caller, as long as any two - callers that could hash identical-looking type nodes agree. */ - -extern tree type_hash_canon PROTO((int, tree)); - -/* Given a VAR_DECL, PARM_DECL, RESULT_DECL or FIELD_DECL node, - calculates the DECL_SIZE, DECL_SIZE_UNIT, DECL_ALIGN and DECL_MODE - fields. Call this only once for any given decl node. - - Second argument is the boundary that this field can be assumed to - be starting at (in bits). Zero means it can be assumed aligned - on any boundary that may be needed. */ - -extern void layout_decl PROTO((tree, unsigned)); - -/* Return an expr equal to X but certainly not valid as an lvalue. */ - -extern tree non_lvalue PROTO((tree)); -extern tree pedantic_non_lvalue PROTO((tree)); - -extern tree convert PROTO((tree, tree)); -extern tree size_in_bytes PROTO((tree)); -extern int int_size_in_bytes PROTO((tree)); -extern tree size_binop PROTO((enum tree_code, tree, tree)); -extern tree size_int PROTO((unsigned)); -extern tree round_up PROTO((tree, int)); -extern tree get_pending_sizes PROTO((void)); - -/* Type for sizes of data-type. */ - -extern tree sizetype; - -/* If nonzero, an upper limit on alignment of structure fields, in bits. */ -extern int maximum_field_alignment; - -/* If non-zero, the alignment of a bitsting or (power-)set value, in bits. */ -extern int set_alignment; - -/* Concatenate two lists (chains of TREE_LIST nodes) X and Y - by making the last node in X point to Y. - Returns X, except if X is 0 returns Y. */ - -extern tree chainon PROTO((tree, tree)); - -/* Make a new TREE_LIST node from specified PURPOSE, VALUE and CHAIN. */ - -extern tree tree_cons PROTO((tree, tree, tree)); -extern tree perm_tree_cons PROTO((tree, tree, tree)); -extern tree temp_tree_cons PROTO((tree, tree, tree)); -extern tree saveable_tree_cons PROTO((tree, tree, tree)); -extern tree decl_tree_cons PROTO((tree, tree, tree)); - -/* Return the last tree node in a chain. */ - -extern tree tree_last PROTO((tree)); - -/* Reverse the order of elements in a chain, and return the new head. */ - -extern tree nreverse PROTO((tree)); - -/* Returns the length of a chain of nodes - (number of chain pointers to follow before reaching a null pointer). */ - -extern int list_length PROTO((tree)); - -/* integer_zerop (tree x) is nonzero if X is an integer constant of value 0 */ - -extern int integer_zerop PROTO((tree)); - -/* integer_onep (tree x) is nonzero if X is an integer constant of value 1 */ - -extern int integer_onep PROTO((tree)); - -/* integer_all_onesp (tree x) is nonzero if X is an integer constant - all of whose significant bits are 1. */ - -extern int integer_all_onesp PROTO((tree)); - -/* integer_pow2p (tree x) is nonzero is X is an integer constant with - exactly one bit 1. */ - -extern int integer_pow2p PROTO((tree)); - -/* staticp (tree x) is nonzero if X is a reference to data allocated - at a fixed address in memory. */ - -extern int staticp PROTO((tree)); - -/* Gets an error if argument X is not an lvalue. - Also returns 1 if X is an lvalue, 0 if not. */ - -extern int lvalue_or_else PROTO((tree, char *)); - -/* save_expr (EXP) returns an expression equivalent to EXP - but it can be used multiple times within context CTX - and only evaluate EXP once. */ - -extern tree save_expr PROTO((tree)); - -/* Return 1 if EXP contains a PLACEHOLDER_EXPR; i.e., if it represents a size - or offset that depends on a field within a record. - - Note that we only allow such expressions within simple arithmetic - or a COND_EXPR. */ - -extern int contains_placeholder_p PROTO((tree)); - -/* Given a tree EXP, a FIELD_DECL F, and a replacement value R, - return a tree with all occurrences of references to F in a - PLACEHOLDER_EXPR replaced by R. Note that we assume here that EXP - contains only arithmetic expressions. */ - -extern tree substitute_in_expr PROTO((tree, tree, tree)); - -/* Given a type T, a FIELD_DECL F, and a replacement value R, - return a new type with all size expressions that contain F - updated by replacing the reference to F with R. */ - -extern tree substitute_in_type PROTO((tree, tree, tree)); - -/* variable_size (EXP) is like save_expr (EXP) except that it - is for the special case of something that is part of a - variable size for a data type. It makes special arrangements - to compute the value at the right time when the data type - belongs to a function parameter. */ - -extern tree variable_size PROTO((tree)); - -/* stabilize_reference (EXP) returns an reference equivalent to EXP - but it can be used multiple times - and only evaluate the subexpressions once. */ - -extern tree stabilize_reference PROTO((tree)); - -/* Return EXP, stripped of any conversions to wider types - in such a way that the result of converting to type FOR_TYPE - is the same as if EXP were converted to FOR_TYPE. - If FOR_TYPE is 0, it signifies EXP's type. */ - -extern tree get_unwidened PROTO((tree, tree)); - -/* Return OP or a simpler expression for a narrower value - which can be sign-extended or zero-extended to give back OP. - Store in *UNSIGNEDP_PTR either 1 if the value should be zero-extended - or 0 if the value should be sign-extended. */ - -extern tree get_narrower PROTO((tree, int *)); - -/* Given MODE and UNSIGNEDP, return a suitable type-tree - with that mode. - The definition of this resides in language-specific code - as the repertoire of available types may vary. */ - -extern tree type_for_mode PROTO((enum machine_mode, int)); - -/* Given PRECISION and UNSIGNEDP, return a suitable type-tree - for an integer type with at least that precision. - The definition of this resides in language-specific code - as the repertoire of available types may vary. */ - -extern tree type_for_size PROTO((unsigned, int)); - -/* Given an integer type T, return a type like T but unsigned. - If T is unsigned, the value is T. - The definition of this resides in language-specific code - as the repertoire of available types may vary. */ - -extern tree unsigned_type PROTO((tree)); - -/* Given an integer type T, return a type like T but signed. - If T is signed, the value is T. - The definition of this resides in language-specific code - as the repertoire of available types may vary. */ - -extern tree signed_type PROTO((tree)); - -/* This function must be defined in the language-specific files. - expand_expr calls it to build the cleanup-expression for a TARGET_EXPR. - This is defined in a language-specific file. */ - -extern tree maybe_build_cleanup PROTO((tree)); - -/* Given an expression EXP that may be a COMPONENT_REF or an ARRAY_REF, - look for nested component-refs or array-refs at constant positions - and find the ultimate containing object, which is returned. */ - -extern tree get_inner_reference PROTO((tree, int *, int *, tree *, enum machine_mode *, int *, int *)); - -/* Return the FUNCTION_DECL which provides this _DECL with its context, - or zero if none. */ -extern tree decl_function_context PROTO((tree)); - -/* Return the RECORD_TYPE, UNION_TYPE, or QUAL_UNION_TYPE which provides - this _DECL with its context, or zero if none. */ -extern tree decl_type_context PROTO((tree)); - -/* Given the FUNCTION_DECL for the current function, - return zero if it is ok for this function to be inline. - Otherwise return a warning message with a single %s - for the function's name. */ - -extern char *function_cannot_inline_p PROTO((tree)); - -/* Return 1 if EXPR is the real constant zero. */ -extern int real_zerop PROTO((tree)); - -/* Declare commonly used variables for tree structure. */ - -/* An integer constant with value 0 */ -extern tree integer_zero_node; - -/* An integer constant with value 1 */ -extern tree integer_one_node; - -/* An integer constant with value 0 whose type is sizetype. */ -extern tree size_zero_node; - -/* An integer constant with value 1 whose type is sizetype. */ -extern tree size_one_node; - -/* A constant of type pointer-to-int and value 0 */ -extern tree null_pointer_node; - -/* A node of type ERROR_MARK. */ -extern tree error_mark_node; - -/* The type node for the void type. */ -extern tree void_type_node; - -/* The type node for the ordinary (signed) integer type. */ -extern tree integer_type_node; - -/* The type node for the unsigned integer type. */ -extern tree unsigned_type_node; - -/* The type node for the ordinary character type. */ -extern tree char_type_node; - -/* Points to the name of the input file from which the current input - being parsed originally came (before it went into cpp). */ -extern char *input_filename; - -/* Current line number in input file. */ -extern int lineno; - -/* Nonzero for -pedantic switch: warn about anything - that standard C forbids. */ -extern int pedantic; - -/* Nonzero means can safely call expand_expr now; - otherwise layout_type puts variable sizes onto `pending_sizes' instead. */ - -extern int immediate_size_expand; - -/* Points to the FUNCTION_DECL of the function whose body we are reading. */ - -extern tree current_function_decl; - -/* 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 means all ..._TYPE nodes should be allocated permanently. */ - -extern int all_types_permanent; - -/* Pointer to function to compute the name to use to print a declaration. */ - -extern char *(*decl_printable_name) (); - -/* Pointer to function to finish handling an incomplete decl at the - end of compilation. */ - -extern void (*incomplete_decl_finalize_hook) (); - -/* In tree.c */ -extern char *perm_calloc PROTO((int, long)); -extern tree get_set_constructor_bits PROTO((tree, char*, int)); -extern tree get_set_constructor_words PROTO((tree, - HOST_WIDE_INT*, int)); - -/* In stmt.c */ - -extern void expand_fixups PROTO((struct rtx_def *)); -extern tree expand_start_stmt_expr PROTO((void)); -extern tree expand_end_stmt_expr PROTO((tree)); -extern void expand_expr_stmt PROTO((tree)); -extern void expand_decl_init PROTO((tree)); -extern void clear_last_expr PROTO((void)); -extern void expand_label PROTO((tree)); -extern void expand_goto PROTO((tree)); -extern void expand_asm PROTO((tree)); -extern void expand_start_cond PROTO((tree, int)); -extern void expand_end_cond PROTO((void)); -extern void expand_start_else PROTO((void)); -extern void expand_start_elseif PROTO((tree)); -extern struct nesting *expand_start_loop PROTO((int)); -extern struct nesting *expand_start_loop_continue_elsewhere PROTO((int)); -extern void expand_loop_continue_here PROTO((void)); -extern void expand_end_loop PROTO((void)); -extern int expand_continue_loop PROTO((struct nesting *)); -extern int expand_exit_loop PROTO((struct nesting *)); -extern int expand_exit_loop_if_false PROTO((struct nesting *, - tree)); -extern int expand_exit_something PROTO((void)); - -extern void expand_null_return PROTO((void)); -extern void expand_return PROTO((tree)); -extern void expand_start_bindings PROTO((int)); -extern void expand_end_bindings PROTO((tree, int, int)); -extern tree last_cleanup_this_contour PROTO((void)); -extern void expand_start_case PROTO((int, tree, tree, - char *)); -extern void expand_end_case PROTO((tree)); -extern int pushcase PROTO((tree, - tree (*) (tree, tree), - tree, tree *)); -extern int pushcase_range PROTO((tree, tree, - tree (*) (tree, tree), - tree, tree *)); - -/* In fold-const.c */ - -/* Fold constants as much as possible in an expression. - Returns the simplified expression. - Acts only on the top level of the expression; - if the argument itself cannot be simplified, its - subexpressions are not changed. */ - -extern tree fold PROTO((tree)); - -extern int force_fit_type PROTO((tree, int)); -extern int add_double PROTO((HOST_WIDE_INT, HOST_WIDE_INT, - HOST_WIDE_INT, HOST_WIDE_INT, - HOST_WIDE_INT *, HOST_WIDE_INT *)); -extern int neg_double PROTO((HOST_WIDE_INT, HOST_WIDE_INT, - HOST_WIDE_INT *, HOST_WIDE_INT *)); -extern int mul_double PROTO((HOST_WIDE_INT, HOST_WIDE_INT, - HOST_WIDE_INT, HOST_WIDE_INT, - HOST_WIDE_INT *, HOST_WIDE_INT *)); -extern void lshift_double PROTO((HOST_WIDE_INT, HOST_WIDE_INT, - HOST_WIDE_INT, int, HOST_WIDE_INT *, - HOST_WIDE_INT *, int)); -extern void rshift_double PROTO((HOST_WIDE_INT, HOST_WIDE_INT, - HOST_WIDE_INT, int, - HOST_WIDE_INT *, HOST_WIDE_INT *, int)); -extern void lrotate_double PROTO((HOST_WIDE_INT, HOST_WIDE_INT, - HOST_WIDE_INT, int, HOST_WIDE_INT *, - HOST_WIDE_INT *)); -extern void rrotate_double PROTO((HOST_WIDE_INT, HOST_WIDE_INT, - HOST_WIDE_INT, int, HOST_WIDE_INT *, - HOST_WIDE_INT *)); -extern int operand_equal_p PROTO((tree, tree, int)); -extern tree invert_truthvalue PROTO((tree)); - -/* The language front-end must define these functions. */ - -/* Function of no arguments for initializing lexical scanning. */ -extern void init_lex PROTO((void)); -/* Function of no arguments for initializing the symbol table. */ -extern void init_decl_processing PROTO((void)); - -/* Functions called with no arguments at the beginning and end or processing - the input source file. */ -extern void lang_init PROTO((void)); -extern void lang_finish PROTO((void)); - -/* Funtion to identify which front-end produced the output file. */ -extern char *lang_identify PROTO((void)); - -/* Function to replace the DECL_LANG_SPECIFIC field of a DECL with a copy. */ -extern void copy_lang_decl PROTO((tree)); - -/* Function called with no arguments to parse and compile the input. */ -extern int yyparse PROTO((void)); -/* Function called with option as argument - to decode options starting with -f or -W or +. - It should return nonzero if it handles the option. */ -extern int lang_decode_option PROTO((char *)); - -/* Functions for processing symbol declarations. */ -/* Function to enter a new lexical scope. - Takes one argument: always zero when called from outside the front end. */ -extern void pushlevel PROTO((int)); -/* Function to exit a lexical scope. It returns a BINDING for that scope. - Takes three arguments: - KEEP -- nonzero if there were declarations in this scope. - REVERSE -- reverse the order of decls before returning them. - FUNCTIONBODY -- nonzero if this level is the body of a function. */ -extern tree poplevel PROTO((int, int, int)); -/* Set the BLOCK node for the current scope level. */ -extern void set_block PROTO((tree)); -/* Function to add a decl to the current scope level. - Takes one argument, a decl to add. - Returns that decl, or, if the same symbol is already declared, may - return a different decl for that name. */ -extern tree pushdecl PROTO((tree)); -/* Function to return the chain of decls so far in the current scope level. */ -extern tree getdecls PROTO((void)); -/* Function to return the chain of structure tags in the current scope level. */ -extern tree gettags PROTO((void)); - -extern tree build_range_type PROTO((tree, tree, tree)); - -/* Call when starting to parse a declaration: - make expressions in the declaration last the length of the function. - Returns an argument that should be passed to resume_momentary later. */ -extern int suspend_momentary PROTO((void)); - -extern int allocation_temporary_p PROTO((void)); - -/* Call when finished parsing a declaration: - restore the treatment of node-allocation that was - in effect before the suspension. - YES should be the value previously returned by suspend_momentary. */ -extern void resume_momentary PROTO((int)); - -/* Called after finishing a record, union or enumeral type. */ -extern void rest_of_type_compilation PROTO((tree, int)); - -/* Save the current set of obstacks, but don't change them. */ -extern void push_obstacks_nochange PROTO((void)); - -extern void permanent_allocation PROTO((int)); - -extern void push_momentary PROTO((void)); - -extern void clear_momentary PROTO((void)); - -extern void pop_momentary PROTO((void)); - -extern void end_temporary_allocation PROTO((void)); - -/* Pop the obstack selection stack. */ -extern void pop_obstacks PROTO((void)); |
