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Diffstat (limited to 'gcc-4.7/gcc/config/m32c/prologue.md')
| -rw-r--r-- | gcc-4.7/gcc/config/m32c/prologue.md | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/gcc-4.7/gcc/config/m32c/prologue.md b/gcc-4.7/gcc/config/m32c/prologue.md new file mode 100644 index 000000000..f4e62db1d --- /dev/null +++ b/gcc-4.7/gcc/config/m32c/prologue.md @@ -0,0 +1,202 @@ +;; Machine Descriptions for R8C/M16C/M32C +;; Copyright (C) 2005, 2007, 2008 +;; 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/>. + +;; Prologue and epilogue patterns + +(define_expand "prologue" + [(const_int 1)] + "" + "m32c_emit_prologue(); DONE;" + ) + +; For the next two, operands[0] is the amount of stack space we want +; to reserve. + +; We assume dwarf2out will process each set in sequence. +(define_insn "prologue_enter_16" + [(set (mem:HI (plus:HI (reg:HI SP_REGNO) (const_int -2))) + (reg:HI FB_REGNO)) + (set (reg:HI FB_REGNO) + (plus:HI (reg:HI SP_REGNO) (const_int -2))) + (set (reg:HI SP_REGNO) + (minus:HI (reg:HI SP_REGNO) + (match_operand 0 "const_int_operand" "i"))) + ] + "TARGET_A16" + { + /* This is due to binutils bug gas/4659. */ + if (INTVAL (operands[0]) == 2) + return "enter\t#0"; + return "enter\t%0-2"; + } + [(set_attr "flags" "x")] + ) + +(define_insn "prologue_enter_24" + [(set (mem:SI (plus:PSI (reg:PSI SP_REGNO) (const_int -4))) + (reg:SI FB_REGNO)) + (set (reg:PSI FB_REGNO) + (plus:PSI (reg:PSI SP_REGNO) (const_int -4))) + (set (reg:PSI SP_REGNO) + (minus:PSI (reg:PSI SP_REGNO) + (match_operand 0 "const_int_operand" "i"))) + ] + "TARGET_A24" + { + /* This is due to binutils bug gas/4659. */ + if (INTVAL (operands[0]) == 4) + return "enter\t#0"; + return "enter\t%0-4"; + } + [(set_attr "flags" "x")] + ) + +; Just a comment, for debugging the assembler output. +(define_insn "prologue_end" + [(unspec_volatile [(const_int 0)] UNS_PROLOGUE_END)] + "" + "; end of prologue" + [(set_attr "flags" "n")] + ) + + + +(define_expand "epilogue" + [(const_int 1)] + "" + "m32c_emit_epilogue(); DONE;" + ) + +(define_expand "eh_return" + [(match_operand:PSI 0 "" "")] + "" + "m32c_emit_eh_epilogue(operands[0]); + emit_barrier (); + DONE;" + ) + +(define_insn "eh_epilogue" + [(set (pc) + (unspec_volatile [(match_operand 0 "m32c_r1_operand" "") + (match_operand 1 "m32c_r0_operand" "") + ] UNS_EH_EPILOGUE)) + (return)] + "" + "jmp.a\t__m32c_eh_return" + [(set_attr "flags" "x")] + ) + +(define_insn "epilogue_exitd_16" + [(set (reg:HI SP_REGNO) + (plus:HI (reg:HI FB_REGNO) + (const_int 2))) + (set (reg:HI FB_REGNO) + (mem:HI (reg:HI FB_REGNO))) + (return) + ] + "TARGET_A16" + "exitd" + [(set_attr "flags" "x")] + ) + +(define_insn "epilogue_reit_16" + [(set (reg:HI SP_REGNO) + (plus:HI (reg:HI SP_REGNO) + (const_int 4))) + (return) + ] + "TARGET_A16" + "reit" + [(set_attr "flags" "x")] + ) + +(define_insn "epilogue_exitd_24" + [(set (reg:PSI SP_REGNO) + (plus:PSI (reg:PSI FB_REGNO) + (const_int 4))) + (set (reg:PSI FB_REGNO) + (mem:PSI (reg:PSI FB_REGNO))) + (return) + ] + "TARGET_A24" + "exitd" + [(set_attr "flags" "x")] + ) + +(define_insn "epilogue_reit_24" + [(set (reg:PSI SP_REGNO) + (plus:PSI (reg:PSI SP_REGNO) + (const_int 6))) + (return) + ] + "TARGET_A24" + "reit" + [(set_attr "flags" "x")] + ) + +(define_insn "epilogue_freit" + [(unspec [(const_int 0)] UNS_FREIT) + (return) + ] + "" + "freit" + [(set_attr "flags" "x")] + ) + +(define_insn "epilogue_rts" + [(return) + ] + "" + "rts" + [(set_attr "flags" "x")] + ) + +(define_insn "epilogue_start" + [(unspec_volatile [(const_int 0)] UNS_EPILOGUE_START)] + "" + "; start of epilogue" + [(set_attr "flags" "n")] + ) + + +; These are used by the prologue/epilogue code. + +(define_insn "pushm" + [(unspec [(match_operand 0 "const_int_operand" "i")] UNS_PUSHM)] + "" + "pushm\t%p0" + [(set_attr "flags" "n")] + ) + +(define_insn "popm" + [(unspec [(match_operand 0 "const_int_operand" "i")] UNS_POPM)] + "" + "popm\t%p0" + [(set_attr "flags" "n")] + ) + +(define_insn "fset_b" + [(unspec [(const_int 0)] UNS_FSETB)] + "" + "fset\tB" + [(set_attr "flags" "n")] + ) + |