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Annotation of gcc/function.h, revision 1.1.1.3

1.1       root        1: /* Structure for saving state for a nested function.
1.1.1.3 ! root        2:    Copyright (C) 1989, 1992 Free Software Foundation, Inc.
1.1       root        3: 
                      4: This file is part of GNU CC.
                      5: 
                      6: GNU CC is free software; you can redistribute it and/or modify
                      7: it under the terms of the GNU General Public License as published by
                      8: the Free Software Foundation; either version 2, or (at your option)
                      9: any later version.
                     10: 
                     11: GNU CC is distributed in the hope that it will be useful,
                     12: but WITHOUT ANY WARRANTY; without even the implied warranty of
                     13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     14: GNU General Public License for more details.
                     15: 
                     16: You should have received a copy of the GNU General Public License
                     17: along with GNU CC; see the file COPYING.  If not, write to
                     18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
                     19: 
                     20: 
                     21: #ifndef NULL_TREE
                     22: #define tree int *
                     23: #endif
                     24: #ifndef GET_CODE
                     25: #define rtx int *
                     26: #endif
                     27: 
                     28: struct var_refs_queue
                     29:   {
                     30:     rtx modified;
1.1.1.3 ! root       31:     enum machine_mode promoted_mode;
        !            32:     int unsignedp;
1.1       root       33:     struct var_refs_queue *next;
                     34:   };
                     35: 
                     36: /* Stack of pending (incomplete) sequences saved by `start_sequence'.
                     37:    Each element describes one pending sequence.
                     38:    The main insn-chain is saved in the last element of the chain,
                     39:    unless the chain is empty.  */
                     40: 
                     41: struct sequence_stack
                     42: {
                     43:   /* First and last insns in the chain of the saved sequence.  */
                     44:   rtx first, last;
                     45:   struct sequence_stack *next;
                     46: };
                     47: 
                     48: extern struct sequence_stack *sequence_stack;
                     49: 
                     50: /* This structure can save all the important global and static variables
                     51:    describing the status of the current function.  */
                     52: 
                     53: struct function
                     54: {
                     55:   struct function *next;
                     56: 
                     57:   /* For function.c.  */
                     58:   char *name;
                     59:   tree decl;
                     60:   int pops_args;
                     61:   int returns_struct;
                     62:   int returns_pcc_struct;
                     63:   int needs_context;
                     64:   int calls_setjmp;
                     65:   int calls_longjmp;
                     66:   int calls_alloca;
                     67:   int has_nonlocal_label;
                     68:   rtx nonlocal_goto_handler_slot;
                     69:   rtx nonlocal_goto_stack_level;
                     70:   tree nonlocal_labels;
                     71:   int args_size;
                     72:   int pretend_args_size;
                     73:   rtx arg_offset_rtx;
                     74:   int max_parm_reg;
                     75:   rtx *parm_reg_stack_loc;
                     76:   int outgoing_args_size;
                     77:   rtx return_rtx;
                     78:   rtx cleanup_label;
                     79:   rtx return_label;
                     80:   rtx save_expr_regs;
                     81:   rtx stack_slot_list;
                     82:   rtx parm_birth_insn;
                     83:   int frame_offset;
                     84:   rtx tail_recursion_label;
                     85:   rtx tail_recursion_reentry;
                     86:   rtx internal_arg_pointer;
                     87:   rtx arg_pointer_save_area;
                     88:   tree rtl_expr_chain;
                     89:   rtx last_parm_insn;
                     90:   tree context_display;
                     91:   tree trampoline_list;
                     92:   int function_call_count;
                     93:   struct temp_slot *temp_slots;
                     94:   int temp_slot_level;
                     95:   /* This slot is initialized as 0 and is added to
                     96:      during the nested function.  */
                     97:   struct var_refs_queue *fixup_var_refs_queue;
                     98: 
                     99:   /* For stmt.c  */
                    100:   struct nesting *block_stack;
                    101:   struct nesting *stack_block_stack;
                    102:   struct nesting *cond_stack;
                    103:   struct nesting *loop_stack;
                    104:   struct nesting *case_stack;
                    105:   struct nesting *nesting_stack;
                    106:   int nesting_depth;
                    107:   int block_start_count;
                    108:   tree last_expr_type;
                    109:   rtx last_expr_value;
                    110:   int expr_stmts_for_value;
                    111:   char *emit_filename;
                    112:   int emit_lineno;
                    113:   struct goto_fixup *goto_fixup_chain;
                    114: 
                    115:   /* For expr.c.  */
                    116:   int pending_stack_adjust;
                    117:   int inhibit_defer_pop;
                    118:   tree cleanups_this_call;
                    119:   rtx saveregs_value;
1.1.1.2   root      120:   rtx forced_labels;
1.1       root      121: 
                    122:   /* For emit-rtl.c.  */
                    123:   int reg_rtx_no;
                    124:   int first_label_num;
                    125:   rtx first_insn;
                    126:   rtx last_insn;
                    127:   struct sequence_stack *sequence_stack;
                    128:   int cur_insn_uid;
                    129:   int last_linenum;
                    130:   char *last_filename;
                    131:   char *regno_pointer_flag;
                    132:   int regno_pointer_flag_length;
                    133:   rtx *regno_reg_rtx;
                    134: 
                    135:   /* For stor-layout.c.  */
                    136:   tree permanent_type_chain;
                    137:   tree temporary_type_chain;
                    138:   tree permanent_type_end;
                    139:   tree temporary_type_end;
                    140:   tree pending_sizes;
                    141:   int immediate_size_expand;
                    142: 
                    143:   /* For tree.c.  */
                    144:   int all_types_permanent;
                    145:   struct momentary_level *momentary_stack;
                    146:   char *maybepermanent_firstobj;
                    147:   char *temporary_firstobj;
                    148:   char *momentary_firstobj;
                    149:   struct obstack *current_obstack;
                    150:   struct obstack *function_obstack;
                    151:   struct obstack *function_maybepermanent_obstack;
                    152:   struct obstack *expression_obstack;
                    153:   struct obstack *saveable_obstack;
                    154:   struct obstack *rtl_obstack;
                    155: 
                    156:   /* For integrate.c.  */
                    157:   int uses_const_pool;
                    158: 
                    159:   /* For md files.  */
                    160:   int uses_pic_offset_table;
1.1.1.3 ! root      161: 
        !           162:   /* For reorg.  */
        !           163:   rtx epilogue_delay_list;
        !           164: 
        !           165:   /* For varasm.  */
        !           166:   struct constant_descriptor **const_rtx_hash_table;
        !           167:   struct pool_sym **const_rtx_sym_hash_table;
        !           168:   struct pool_constant *first_pool, *last_pool;
        !           169:   int pool_offset;
1.1       root      170: };
                    171: 
                    172: /* The FUNCTION_DECL for an inline function currently being expanded.  */
                    173: extern tree inline_function_decl;
                    174: 
                    175: /* Label that will go on function epilogue.
                    176:    Jumping to this label serves as a "return" instruction
                    177:    on machines which require execution of the epilogue on all returns.  */
                    178: extern rtx return_label;
                    179: 
                    180: /* List (chain of EXPR_LISTs) of all stack slots in this function.
                    181:    Made for the sake of unshare_all_rtl.  */
                    182: extern rtx stack_slot_list;
                    183: 
1.1.1.3 ! root      184: /* Given a function decl for a containing function,
        !           185:    return the `struct function' for it.  */
        !           186: struct function *find_function_data ();
        !           187: 
        !           188: /* Pointer to chain of `struct function' for containing functions.  */
        !           189: extern struct function *outer_function_chain;
        !           190: 
        !           191: /* Put all this function's BLOCK nodes into a vector and return it.
        !           192:    Also store in each NOTE for the beginning or end of a block
        !           193:    the index of that block in the vector.  */
        !           194: tree *identify_blocks ();
        !           195: 
1.1       root      196: #ifdef rtx
                    197: #undef rtx
                    198: #endif
                    199: 
                    200: #ifdef tree
                    201: #undef tree
                    202: #endif

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