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1 /* |
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2 * Copyright 1999-2006 Sun Microsystems, Inc. All Rights Reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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20 * CA 95054 USA or visit www.sun.com if you need additional information or |
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21 * have any questions. |
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22 * |
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23 */ |
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24 |
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25 // On i486 the frame looks as follows: |
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26 // |
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27 // +-----------------------------+---------+----------------------------------------+----------------+----------- |
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28 // | size_arguments-nof_reg_args | 2 words | size_locals-size_arguments+numreg_args | _size_monitors | spilling . |
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29 // +-----------------------------+---------+----------------------------------------+----------------+----------- |
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30 // |
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31 // The FPU registers are mapped with their offset from TOS; therefore the |
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32 // status of FPU stack must be updated during code emission. |
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33 |
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34 public: |
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35 static const int pd_c_runtime_reserved_arg_size; |
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36 |
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37 enum { |
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38 nof_xmm_regs = pd_nof_xmm_regs_frame_map, |
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39 nof_caller_save_xmm_regs = pd_nof_caller_save_xmm_regs_frame_map, |
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40 first_available_sp_in_frame = 0, |
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41 frame_pad_in_bytes = 8, |
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42 nof_reg_args = 2 |
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43 }; |
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44 |
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45 private: |
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46 static LIR_Opr _caller_save_xmm_regs [nof_caller_save_xmm_regs]; |
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47 |
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48 static XMMRegister _xmm_regs[nof_xmm_regs]; |
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49 |
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50 public: |
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51 static LIR_Opr receiver_opr; |
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52 |
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53 static LIR_Opr rsi_opr; |
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54 static LIR_Opr rdi_opr; |
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55 static LIR_Opr rbx_opr; |
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56 static LIR_Opr rax_opr; |
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57 static LIR_Opr rdx_opr; |
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58 static LIR_Opr rcx_opr; |
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59 static LIR_Opr rsp_opr; |
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60 static LIR_Opr rbp_opr; |
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61 |
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62 static LIR_Opr rsi_oop_opr; |
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63 static LIR_Opr rdi_oop_opr; |
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64 static LIR_Opr rbx_oop_opr; |
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65 static LIR_Opr rax_oop_opr; |
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66 static LIR_Opr rdx_oop_opr; |
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67 static LIR_Opr rcx_oop_opr; |
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68 |
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69 static LIR_Opr rax_rdx_long_opr; |
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70 static LIR_Opr rbx_rcx_long_opr; |
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71 static LIR_Opr fpu0_float_opr; |
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72 static LIR_Opr fpu0_double_opr; |
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73 static LIR_Opr xmm0_float_opr; |
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74 static LIR_Opr xmm0_double_opr; |
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75 |
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76 static LIR_Opr as_long_opr(Register r, Register r2) { |
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77 return LIR_OprFact::double_cpu(cpu_reg2rnr(r), cpu_reg2rnr(r2)); |
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78 } |
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79 |
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80 // VMReg name for spilled physical FPU stack slot n |
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81 static VMReg fpu_regname (int n); |
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82 |
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83 static XMMRegister nr2xmmreg(int rnr); |
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84 |
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85 static bool is_caller_save_register (LIR_Opr opr) { return true; } |
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86 static bool is_caller_save_register (Register r) { return true; } |
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87 |
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88 static LIR_Opr caller_save_xmm_reg_at(int i) { |
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89 assert(i >= 0 && i < nof_caller_save_xmm_regs, "out of bounds"); |
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90 return _caller_save_xmm_regs[i]; |
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91 } |