2008-07-01 Jerry DeLisle <jvdelisle@gcc.gnu.org>
[official-gcc.git] / gcc / config / sparc / sync.md
blob17cf691d5b489cb0965023bae083e94ab8ca1622
1 ;; GCC machine description for SPARC synchronization instructions.
2 ;; Copyright (C) 2005, 2007
3 ;; Free Software Foundation, Inc.
4 ;;
5 ;; This file is part of GCC.
6 ;;
7 ;; GCC is free software; you can redistribute it and/or modify
8 ;; it under the terms of the GNU General Public License as published by
9 ;; the Free Software Foundation; either version 3, or (at your option)
10 ;; any later version.
12 ;; GCC is distributed in the hope that it will be useful,
13 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 ;; GNU General Public License for more details.
17 ;; You should have received a copy of the GNU General Public License
18 ;; along with GCC; see the file COPYING3.  If not see
19 ;; <http://www.gnu.org/licenses/>.
21 (define_mode_iterator I12MODE [QI HI])
22 (define_mode_iterator I24MODE [HI SI])
23 (define_mode_iterator I48MODE [SI (DI "TARGET_ARCH64 || TARGET_V8PLUS")])
24 (define_mode_attr modesuffix [(SI "") (DI "x")])
26 (define_expand "memory_barrier"
27   [(set (mem:BLK (match_dup 0))
28         (unspec_volatile:BLK [(mem:BLK (match_dup 0)) (match_dup 1)]
29                              UNSPECV_MEMBAR))]
30   "TARGET_V8 || TARGET_V9"
32   operands[0] = gen_rtx_MEM (BLKmode, gen_rtx_SCRATCH (DImode));
33   MEM_VOLATILE_P (operands[0]) = 1;
34   if (TARGET_V9)
35     /* member #StoreStore | #LoadStore | #StoreLoad | #LoadLoad */
36     operands[1] = GEN_INT (15);
37   else
38     /* stbar */
39     operands[1] = GEN_INT (8);
42 (define_insn "*stbar"
43   [(set (match_operand:BLK 0 "" "")
44         (unspec_volatile:BLK [(match_operand:BLK 1 "" "")
45                               (const_int 8)] UNSPECV_MEMBAR))]
46   "TARGET_V8"
47   "stbar"
48   [(set_attr "type" "multi")])
50 (define_insn "*membar"
51   [(set (match_operand:BLK 0 "" "")
52         (unspec_volatile:BLK [(match_operand:BLK 1 "" "")
53                               (match_operand:SI 2 "immediate_operand" "I")]
54                               UNSPECV_MEMBAR))]
55   "TARGET_V9"
56   "membar\t%2"
57   [(set_attr "type" "multi")])
59 (define_expand "sync_compare_and_swap<mode>"
60   [(match_operand:I12MODE 0 "register_operand" "")
61    (match_operand:I12MODE 1 "memory_operand" "")
62    (match_operand:I12MODE 2 "register_operand" "")
63    (match_operand:I12MODE 3 "register_operand" "")]
64   "TARGET_V9"
66   sparc_expand_compare_and_swap_12 (operands[0], operands[1],
67                                     operands[2], operands[3]);
68   DONE;
71 (define_expand "sync_compare_and_swap<mode>"
72   [(parallel
73      [(set (match_operand:I48MODE 0 "register_operand" "=r")
74            (match_operand:I48MODE 1 "memory_operand" ""))
75       (set (match_dup 1)
76            (unspec_volatile:I48MODE
77              [(match_operand:I48MODE 2 "register_operand" "")
78               (match_operand:I48MODE 3 "register_operand" "")]
79              UNSPECV_CAS))])]
80   "TARGET_V9"
82   if (! REG_P (XEXP (operands[1], 0)))
83     {
84       rtx addr = force_reg (Pmode, XEXP (operands[1], 0));
85       operands[1] = replace_equiv_address (operands[1], addr);
86     }
87   emit_insn (gen_memory_barrier ());
90 (define_insn "*sync_compare_and_swap<mode>"
91   [(set (match_operand:I48MODE 0 "register_operand" "=r")
92         (match_operand:I48MODE 1 "memory_reg_operand" "+m"))
93    (set (match_dup 1)
94         (unspec_volatile:I48MODE
95           [(match_operand:I48MODE 2 "register_operand" "r")
96            (match_operand:I48MODE 3 "register_operand" "0")]
97           UNSPECV_CAS))]
98   "TARGET_V9 && (<MODE>mode == SImode || TARGET_ARCH64)"
99   "cas<modesuffix>\t%1, %2, %0"
100   [(set_attr "type" "multi")])
102 (define_insn "*sync_compare_and_swapdi_v8plus"
103   [(set (match_operand:DI 0 "register_operand" "=h")
104         (match_operand:DI 1 "memory_reg_operand" "+m"))
105    (set (match_dup 1)
106         (unspec_volatile:DI
107           [(match_operand:DI 2 "register_operand" "h")
108            (match_operand:DI 3 "register_operand" "0")]
109           UNSPECV_CAS))]
110   "TARGET_V8PLUS"
112   if (sparc_check_64 (operands[3], insn) <= 0)
113     output_asm_insn ("srl\t%L3, 0, %L3", operands);
114   output_asm_insn ("sllx\t%H3, 32, %H3", operands);
115   output_asm_insn ("or\t%L3, %H3, %L3", operands);
116   if (sparc_check_64 (operands[2], insn) <= 0)
117     output_asm_insn ("srl\t%L2, 0, %L2", operands);
118   output_asm_insn ("sllx\t%H2, 32, %H3", operands);
119   output_asm_insn ("or\t%L2, %H3, %H3", operands);
120   output_asm_insn ("casx\t%1, %H3, %L3", operands);
121   return "srlx\t%L3, 32, %H3";
123   [(set_attr "type" "multi")
124    (set_attr "length" "8")])
126 (define_expand "sync_lock_test_and_set<mode>"
127   [(match_operand:I12MODE 0 "register_operand" "")
128    (match_operand:I12MODE 1 "memory_operand" "")
129    (match_operand:I12MODE 2 "arith_operand" "")]
130   "!TARGET_V9"
132   if (operands[2] != const1_rtx)
133     FAIL;
134   if (TARGET_V8)
135     emit_insn (gen_memory_barrier ());
136   if (<MODE>mode != QImode)
137     operands[1] = adjust_address (operands[1], QImode, 0);
138   emit_insn (gen_ldstub<mode> (operands[0], operands[1]));
139   DONE;
142 (define_expand "sync_lock_test_and_setsi"
143   [(parallel
144      [(set (match_operand:SI 0 "register_operand" "")
145            (unspec_volatile:SI [(match_operand:SI 1 "memory_operand" "")]
146                                UNSPECV_SWAP))
147       (set (match_dup 1)
148            (match_operand:SI 2 "arith_operand" ""))])]
149   ""
151   if (! TARGET_V8 && ! TARGET_V9)
152     {
153       if (operands[2] != const1_rtx)
154         FAIL;
155       operands[1] = adjust_address (operands[1], QImode, 0);
156       emit_insn (gen_ldstubsi (operands[0], operands[1]));
157       DONE;
158     }
159   emit_insn (gen_memory_barrier ());
160   operands[2] = force_reg (SImode, operands[2]);
163 (define_insn "*swapsi"
164   [(set (match_operand:SI 0 "register_operand" "=r")
165         (unspec_volatile:SI [(match_operand:SI 1 "memory_operand" "+m")]
166                             UNSPECV_SWAP))
167    (set (match_dup 1)
168         (match_operand:SI 2 "register_operand" "0"))]
169   "TARGET_V8 || TARGET_V9"
170   "swap\t%1, %0"
171   [(set_attr "type" "multi")])
173 (define_expand "ldstubqi"
174   [(parallel [(set (match_operand:QI 0 "register_operand" "")
175                    (unspec_volatile:QI [(match_operand:QI 1 "memory_operand" "")]
176                                        UNSPECV_LDSTUB))
177               (set (match_dup 1) (const_int -1))])]
178   ""
179   "")
181 (define_expand "ldstub<mode>"
182   [(parallel [(set (match_operand:I24MODE 0 "register_operand" "")
183                    (zero_extend:I24MODE
184                       (unspec_volatile:QI [(match_operand:QI 1 "memory_operand" "")]
185                                           UNSPECV_LDSTUB)))
186               (set (match_dup 1) (const_int -1))])]
187   ""
188   "")
190 (define_insn "*ldstubqi"
191   [(set (match_operand:QI 0 "register_operand" "=r")
192         (unspec_volatile:QI [(match_operand:QI 1 "memory_operand" "+m")]
193                             UNSPECV_LDSTUB))
194    (set (match_dup 1) (const_int -1))]
195   ""
196   "ldstub\t%1, %0"
197   [(set_attr "type" "multi")])
199 (define_insn "*ldstub<mode>"
200   [(set (match_operand:I24MODE 0 "register_operand" "=r")
201         (zero_extend:I24MODE
202           (unspec_volatile:QI [(match_operand:QI 1 "memory_operand" "+m")]
203                               UNSPECV_LDSTUB)))
204    (set (match_dup 1) (const_int -1))]
205   ""
206   "ldstub\t%1, %0"
207   [(set_attr "type" "multi")])