1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
/* Structure for saving state for a nested function.
Copyright (C) 1989, 1992, 1993 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. */
#ifndef NULL_TREE
#define tree int *
#endif
#ifndef GET_CODE
#define rtx int *
#endif
struct var_refs_queue
{
rtx modified;
enum machine_mode promoted_mode;
int unsignedp;
struct var_refs_queue *next;
};
/* Stack of pending (incomplete) sequences saved by `start_sequence'.
Each element describes one pending sequence.
The main insn-chain is saved in the last element of the chain,
unless the chain is empty. */
struct sequence_stack
{
/* First and last insns in the chain of the saved sequence. */
rtx first, last;
tree sequence_rtl_expr;
struct sequence_stack *next;
};
extern struct sequence_stack *sequence_stack;
/* This structure can save all the important global and static variables
describing the status of the current function. */
struct function
{
struct function *next;
/* For function.c. */
char *name;
tree decl;
int pops_args;
int returns_struct;
int returns_pcc_struct;
int needs_context;
int calls_setjmp;
int calls_longjmp;
int calls_alloca;
int has_nonlocal_label;
int has_nonlocal_goto;
rtx nonlocal_goto_handler_slot;
rtx nonlocal_goto_stack_level;
tree nonlocal_labels;
int args_size;
int pretend_args_size;
rtx arg_offset_rtx;
int max_parm_reg;
rtx *parm_reg_stack_loc;
int outgoing_args_size;
rtx return_rtx;
rtx cleanup_label;
rtx return_label;
rtx save_expr_regs;
rtx stack_slot_list;
rtx parm_birth_insn;
int frame_offset;
rtx tail_recursion_label;
rtx tail_recursion_reentry;
rtx internal_arg_pointer;
rtx arg_pointer_save_area;
tree rtl_expr_chain;
rtx last_parm_insn;
tree context_display;
tree trampoline_list;
int function_call_count;
struct temp_slot *temp_slots;
int temp_slot_level;
/* This slot is initialized as 0 and is added to
during the nested function. */
struct var_refs_queue *fixup_var_refs_queue;
/* For stmt.c */
struct nesting *block_stack;
struct nesting *stack_block_stack;
struct nesting *cond_stack;
struct nesting *loop_stack;
struct nesting *case_stack;
struct nesting *nesting_stack;
int nesting_depth;
int block_start_count;
tree last_expr_type;
rtx last_expr_value;
int expr_stmts_for_value;
char *emit_filename;
int emit_lineno;
struct goto_fixup *goto_fixup_chain;
/* For expr.c. */
int pending_stack_adjust;
int inhibit_defer_pop;
tree cleanups_this_call;
rtx saveregs_value;
rtx apply_args_value;
rtx forced_labels;
/* For emit-rtl.c. */
int reg_rtx_no;
int first_label_num;
rtx first_insn;
rtx last_insn;
tree sequence_rtl_expr;
struct sequence_stack *sequence_stack;
int cur_insn_uid;
int last_linenum;
char *last_filename;
char *regno_pointer_flag;
int regno_pointer_flag_length;
rtx *regno_reg_rtx;
/* For stor-layout.c. */
tree permanent_type_chain;
tree temporary_type_chain;
tree permanent_type_end;
tree temporary_type_end;
tree pending_sizes;
int immediate_size_expand;
/* For tree.c. */
int all_types_permanent;
struct momentary_level *momentary_stack;
char *maybepermanent_firstobj;
char *temporary_firstobj;
char *momentary_firstobj;
char *momentary_function_firstobj;
struct obstack *current_obstack;
struct obstack *function_obstack;
struct obstack *function_maybepermanent_obstack;
struct obstack *expression_obstack;
struct obstack *saveable_obstack;
struct obstack *rtl_obstack;
/* For integrate.c. */
int uses_const_pool;
/* For md files. */
int uses_pic_offset_table;
/* tm.h can use this to store whatever it likes. */
struct machine_function *machine;
/* For reorg. */
rtx epilogue_delay_list;
/* For varasm. */
struct constant_descriptor **const_rtx_hash_table;
struct pool_sym **const_rtx_sym_hash_table;
struct pool_constant *first_pool, *last_pool;
int pool_offset;
};
/* The FUNCTION_DECL for an inline function currently being expanded. */
extern tree inline_function_decl;
/* Label that will go on function epilogue.
Jumping to this label serves as a "return" instruction
on machines which require execution of the epilogue on all returns. */
extern rtx return_label;
/* List (chain of EXPR_LISTs) of all stack slots in this function.
Made for the sake of unshare_all_rtl. */
extern rtx stack_slot_list;
/* Given a function decl for a containing function,
return the `struct function' for it. */
struct function *find_function_data PROTO((tree));
/* Pointer to chain of `struct function' for containing functions. */
extern struct function *outer_function_chain;
/* Put all this function's BLOCK nodes into a vector and return it.
Also store in each NOTE for the beginning or end of a block
the index of that block in the vector. */
extern tree *identify_blocks PROTO((tree, rtx));
/* These variables hold pointers to functions to
save and restore machine-specific data,
in push_function_context and pop_function_context. */
extern void (*save_machine_status) ();
extern void (*restore_machine_status) ();
#ifdef rtx
#undef rtx
#endif
#ifdef tree
#undef tree
#endif
|
