1 ;; Machine Descriptions for R8C/M16C/M32C
2 ;; Copyright (C) 2005, 2007
3 ;; Free Software Foundation, Inc.
4 ;; Contributed by Red Hat.
6 ;; This file is part of GCC.
8 ;; GCC is free software; you can redistribute it and/or modify it
9 ;; under the terms of the GNU General Public License as published
10 ;; by the Free Software Foundation; either version 2, or (at your
11 ;; option) any later version.
13 ;; GCC is distributed in the hope that it will be useful, but WITHOUT
14 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 ;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
16 ;; License for more details.
18 ;; You should have received a copy of the GNU General Public License
19 ;; along with GCC; see the file COPYING. If not, write to the Free
20 ;; Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
23 ;; Prologue and epilogue patterns
25 (define_expand "prologue"
28 "m32c_emit_prologue(); DONE;"
31 ; For the next two, operands[0] is the amount of stack space we want
34 ; We assume dwarf2out will process each set in sequence.
35 (define_insn "prologue_enter_16"
36 [(set (mem:HI (plus:HI (reg:HI SP_REGNO) (const_int -2)))
38 (set (reg:HI FB_REGNO)
40 (set (reg:HI SP_REGNO)
41 (minus:HI (reg:HI SP_REGNO)
42 (match_operand 0 "const_int_operand" "i")))
46 /* This is due to binutils bug gas/4659. */
47 if (INTVAL (operands[0]) == 2)
51 [(set_attr "flags" "x")]
54 (define_insn "prologue_enter_24"
55 [(set (mem:SI (plus:PSI (reg:PSI SP_REGNO) (const_int -4)))
57 (set (reg:PSI FB_REGNO)
59 (set (reg:PSI SP_REGNO)
60 (minus:PSI (reg:PSI SP_REGNO)
61 (match_operand 0 "const_int_operand" "i")))
65 /* This is due to binutils bug gas/4659. */
66 if (INTVAL (operands[0]) == 4)
70 [(set_attr "flags" "x")]
73 ; Just a comment, for debugging the assembler output.
74 (define_insn "prologue_end"
75 [(unspec_volatile [(const_int 0)] UNS_PROLOGUE_END)]
78 [(set_attr "flags" "n")]
83 (define_expand "epilogue"
86 "m32c_emit_epilogue(); DONE;"
89 (define_expand "eh_return"
90 [(match_operand:PSI 0 "" "")]
92 "m32c_emit_eh_epilogue(operands[0]); DONE;"
95 (define_insn "eh_epilogue"
97 (unspec_volatile [(match_operand 0 "m32c_r1_operand" "")
98 (match_operand 1 "m32c_r0_operand" "")
101 "jmp.a\t__m32c_eh_return"
102 [(set_attr "flags" "x")]
105 (define_insn "epilogue_exitd_16"
106 [(set (reg:HI SP_REGNO)
107 (plus:HI (reg:HI FB_REGNO)
109 (set (reg:HI FB_REGNO)
110 (mem:HI (reg:HI FB_REGNO)))
115 [(set_attr "flags" "x")]
118 (define_insn "epilogue_reit_16"
119 [(set (reg:HI SP_REGNO)
120 (plus:HI (reg:HI SP_REGNO)
126 [(set_attr "flags" "x")]
129 (define_insn "epilogue_exitd_24"
130 [(set (reg:PSI SP_REGNO)
131 (plus:PSI (reg:PSI FB_REGNO)
133 (set (reg:PSI FB_REGNO)
134 (mem:PSI (reg:PSI FB_REGNO)))
139 [(set_attr "flags" "x")]
142 (define_insn "epilogue_reit_24"
143 [(set (reg:PSI SP_REGNO)
144 (plus:PSI (reg:PSI SP_REGNO)
150 [(set_attr "flags" "x")]
153 (define_insn "epilogue_rts"
158 [(set_attr "flags" "x")]
161 (define_insn "epilogue_start"
162 [(unspec_volatile [(const_int 0)] UNS_EPILOGUE_START)]
164 "; start of epilogue"
165 [(set_attr "flags" "n")]
169 ; These are used by the prologue/epilogue code.
172 [(unspec [(match_operand 0 "const_int_operand" "i")] UNS_PUSHM)]
175 [(set_attr "flags" "n")]
179 [(unspec [(match_operand 0 "const_int_operand" "i")] UNS_POPM)]
182 [(set_attr "flags" "n")]