1;; Machine Descriptions for R8C/M16C/M32C
2;; Copyright (C) 2005-2020 Free Software Foundation, Inc.
3;; Contributed by Red Hat.
4;;
5;; This file is part of GCC.
6;;
7;; GCC is free software; you can redistribute it and/or modify it
8;; under the terms of the GNU General Public License as published
9;; by the Free Software Foundation; either version 3, or (at your
10;; option) any later version.
11;;
12;; GCC is distributed in the hope that it will be useful, but WITHOUT
13;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14;; or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
15;; License for more details.
16;;
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/>.
20
21;; jump, conditionals, calls, etc
22
23(define_insn "indirect_jump_16"
24  [(set (pc)
25       (match_operand:HI 0 "register_operand" "Rhi"))]
26  "TARGET_A16"
27;  "jmpi.a\t%0"
28  ; no 16-bit jmpi in r8c
29  "push.b #0 | push.w\t%0 | rts"
30  [(set_attr "flags" "x")]
31  )
32
33(define_insn "indirect_jump_24"
34  [(set (pc)
35       (match_operand:PSI 0 "register_operand" "Rpi"))]
36  "TARGET_A24"
37  "jmpi.a\t%0"
38  [(set_attr "flags" "n")]
39  )
40
41(define_expand "indirect_jump"
42  [(match_operand 0 "register_operand" "")]
43  ""
44  "if (TARGET_A16)
45     emit_jump_insn (gen_indirect_jump_16(operands[0]));
46   else
47     emit_jump_insn (gen_indirect_jump_24(operands[0]));
48   DONE;"
49  )
50
51; We can replace this with jmp.s when gas supports relaxing.  m32c
52; opcodes are too complicated to try to compute their sizes here, it's
53; far easier (and more reliable) to let gas worry about it.
54(define_insn "jump"
55  [(set (pc)
56	(label_ref (match_operand 0 "" "")))]
57  ""
58  "jmp.a\t%l0"
59  [(set_attr "flags" "n")]
60)
61
62; No 16-bit indirect calls on r8c/m16c.  */
63(define_insn "call"
64  [(call (match_operand:QI 0 "memory_operand" "Si,SaSb,?Rmm")
65	 (match_operand 1 "" ""))
66   (use (match_operand 2 "immediate_operand" ""))]
67  ""
68  "*
69switch (which_alternative) {
70  case 0:
71    {
72      HOST_WIDE_INT func_vect_num =
73      current_function_special_page_vector(XEXP (operands[0], 0));
74      if (func_vect_num)
75        {
76          operands[3] = gen_rtx_CONST_INT (VOIDmode, func_vect_num);
77          return \"jsrs\t%3\";
78        }
79      else
80        return \"jsr.a\t%0\";
81    }
82  case 1: return TARGET_A16 ? \"push.w %a0 | jsr.a\tm32c_jsri16\" : \"jsri.a\t%a0\";
83  case 2: return \"jsri.a\t%a0\";
84  default: gcc_unreachable ();
85}"
86  [(set_attr "flags" "x")]
87  )
88
89(define_insn "call_value"
90  [(set (match_operand 0 "m32c_return_operand" "=RdiRmmRpa,RdiRmmRpa,RdiRmmRpa")
91	(call (match_operand:QI 1 "memory_operand" "Si,SaSb,?Rmm")
92	      (match_operand 2 "" "")))
93   (use (match_operand 3 "immediate_operand" ""))]
94  ""
95  "*
96switch (which_alternative) {
97  case 0:
98    {
99      HOST_WIDE_INT func_vect_num =
100      current_function_special_page_vector(XEXP (operands[1], 0));
101      if (func_vect_num)
102        {
103          operands[4] = gen_rtx_CONST_INT (VOIDmode, func_vect_num);
104          return \"jsrs\t%4\";
105        }
106      else
107        return \"jsr.a\t%1\";
108    }
109  case 1: return TARGET_A16 ? \"push.w %a1 | jsr.a\tm32c_jsri16\" : \"jsri.a\t%a1\";
110  case 2: return \"jsri.a\t%a1\";
111  default: gcc_unreachable ();
112}"
113  [(set_attr "flags" "x,x,x")]
114  )
115
116(define_expand "untyped_call"
117  [(parallel [(call (match_operand 0 "" "")
118                    (const_int 0))
119              (match_operand 1 "" "")
120              (match_operand 2 "" "")])]
121  ""
122  "
123{
124  int i;
125
126  emit_call_insn (gen_call (operands[0], const0_rtx, const0_rtx));
127
128  for (i = 0; i < XVECLEN (operands[2], 0); i++)
129    {
130      rtx set = XVECEXP (operands[2], 0, i);
131      emit_move_insn (SET_DEST (set), SET_SRC (set));
132    }
133  DONE;
134}")
135