;; Machine Descriptions for R8C/M16C/M32C ;; Copyright (C) 2005-2021 Free Software Foundation, Inc. ;; Contributed by Red Hat. ;; ;; This file is part of GCC. ;; ;; GCC 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 3, or (at your ;; option) any later version. ;; ;; GCC 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 GCC; see the file COPYING3. If not see ;; http://www.gnu.org/licenses/.
;; jump, conditionals, calls, etc
(define_insn “indirect_jump_16” [(set (pc) (match_operand:HI 0 “register_operand” “Rhi”))] “TARGET_A16” ; “jmpi.a\t%0” ; no 16-bit jmpi in r8c “push.b #0 | push.w\t%0 | rts” [(set_attr “flags” “x”)] )
(define_insn “indirect_jump_24” [(set (pc) (match_operand:PSI 0 “register_operand” “Rpi”))] “TARGET_A24” “jmpi.a\t%0” [(set_attr “flags” “n”)] )
(define_expand “indirect_jump” [(match_operand 0 “register_operand” "")] "" “if (TARGET_A16) emit_jump_insn (gen_indirect_jump_16(operands[0])); else emit_jump_insn (gen_indirect_jump_24(operands[0])); DONE;” )
; We can replace this with jmp.s when gas supports relaxing. m32c ; opcodes are too complicated to try to compute their sizes here, it's ; far easier (and more reliable) to let gas worry about it. (define_insn “jump” [(set (pc) (label_ref (match_operand 0 "" "")))] "" “jmp.a\t%l0” [(set_attr “flags” “n”)] )
; No 16-bit indirect calls on r8c/m16c. / (define_insn “call” [(call (match_operand:QI 0 “memory_operand” “Si,SaSb,?Rmm”) (match_operand 1 "" "")) (use (match_operand 2 “immediate_operand” ""))] "" " switch (which_alternative) { case 0: { HOST_WIDE_INT func_vect_num = current_function_special_page_vector(XEXP (operands[0], 0)); if (func_vect_num) { operands[3] = gen_rtx_CONST_INT (VOIDmode, func_vect_num); return "jsrs\t%3"; } else return "jsr.a\t%0"; } case 1: return TARGET_A16 ? "push.w %a0 | jsr.a\tm32c_jsri16" : "jsri.a\t%a0"; case 2: return "jsri.a\t%a0"; default: gcc_unreachable (); }" [(set_attr “flags” “x”)] )
(define_insn “call_value” [(set (match_operand 0 “m32c_return_operand” “=RdiRmmRpa,RdiRmmRpa,RdiRmmRpa”) (call (match_operand:QI 1 “memory_operand” “Si,SaSb,?Rmm”) (match_operand 2 "" ""))) (use (match_operand 3 “immediate_operand” ""))] "" “* switch (which_alternative) { case 0: { HOST_WIDE_INT func_vect_num = current_function_special_page_vector(XEXP (operands[1], 0)); if (func_vect_num) { operands[4] = gen_rtx_CONST_INT (VOIDmode, func_vect_num); return "jsrs\t%4"; } else return "jsr.a\t%1"; } case 1: return TARGET_A16 ? "push.w %a1 | jsr.a\tm32c_jsri16" : "jsri.a\t%a1"; case 2: return "jsri.a\t%a1"; default: gcc_unreachable (); }” [(set_attr “flags” “x,x,x”)] )
(define_expand “untyped_call” [(parallel [(call (match_operand 0 "" "") (const_int 0)) (match_operand 1 "" "") (match_operand 2 "" "")])] "" " { int i;
emit_call_insn (gen_call (operands[0], const0_rtx, const0_rtx));
for (i = 0; i < XVECLEN (operands[2], 0); i++) { rtx set = XVECEXP (operands[2], 0, i); emit_move_insn (SET_DEST (set), SET_SRC (set)); } DONE; }")