1 | # |
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2 | # RTEMS gdb extensions |
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3 | # sparc archetecture specific abstractions |
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4 | |
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5 | from helper import test_bit |
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6 | |
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7 | |
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8 | |
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9 | class register: |
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10 | '''SPARC Registers''' |
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11 | |
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12 | class psr: |
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13 | '''status register''' |
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14 | |
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15 | sv_table = { |
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16 | 0 : 'user', |
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17 | 1 : 'superviser' |
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18 | } |
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19 | |
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20 | |
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21 | def __init__(self, psr): |
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22 | self.psr = psr |
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23 | |
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24 | def current_window(self): |
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25 | return int(self.psr & 0xf) |
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26 | |
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27 | def traps(self): |
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28 | return test_bit(self.psr, 5) |
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29 | |
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30 | def prev_superviser(self): |
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31 | return int(test_bit(self.psr,6)) |
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32 | |
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33 | def superviser(self): |
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34 | return int(test_bit(self.psr,7)) |
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35 | |
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36 | def interrupt_level(self): |
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37 | # bits 8 to 11 |
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38 | return (self.spr & 0x780) >> 7 |
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39 | |
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40 | def floating_point_status(self): |
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41 | return test_bit(self.psr, 12) |
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42 | |
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43 | def coproc_status(self): |
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44 | return test_bit(self.psr,13) |
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45 | |
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46 | def carry(self): |
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47 | return test_bit(self.psr, 20) |
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48 | |
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49 | def overflow(self): |
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50 | return test_bit(self.psr, 21) |
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51 | |
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52 | def zero(self): |
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53 | return test_bit(self.psr, 22) |
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54 | |
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55 | def icc(self): |
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56 | n = test_bit(self.psr,23) |
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57 | z = test_bit(self.psr,22) |
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58 | v = test_bit(self.psr,21) |
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59 | c = test_bit(self.psr,20) |
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60 | return (n,z,v,c) |
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61 | |
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62 | def to_string(self): |
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63 | val = " Status Register" |
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64 | val += "\n R Window : " + str(self.current_window()) |
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65 | val += "\n Traps Enabled : " + str(self.traps()) |
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66 | val += "\n Flaoting Point : " + str(self.floating_point_status()) |
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67 | val += "\n Coprocessor : " + str(self.coproc_status()) |
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68 | val += "\n Processor Mode : " + self.sv_table[self.superviser()] |
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69 | val += "\n Prev. Mode : " + self.sv_table[self.superviser()] |
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70 | val += "\n Carry : " + str(int(self.carry())) |
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71 | val += "\n Overflow : " + str(int(self.overflow())) |
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72 | val += "\n Zero : " + str(int(self.zero())) |
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73 | |
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74 | return val |
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75 | |
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76 | def __init__(self, reg): |
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77 | self.reg = reg |
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78 | |
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79 | def global_regs(self): |
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80 | val = [self.reg['g0_g1']] |
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81 | |
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82 | for i in range(2,7): |
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83 | val.append(int(self.reg['g'+str(i)])) |
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84 | return val |
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85 | |
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86 | def local_regs(self): |
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87 | val = [] |
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88 | |
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89 | for i in range(0,8): |
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90 | val.append(self.reg['l'+str(i)]) |
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91 | return val |
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92 | |
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93 | def in_regs(self): |
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94 | val = [] |
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95 | |
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96 | for i in range(0,8): |
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97 | if i==6: |
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98 | val.append(self.reg['i6_fp']) |
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99 | else: |
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100 | val.append(self.reg['i'+str(i)]) |
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101 | return val |
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102 | |
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103 | def out_regs(self): |
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104 | val = [] |
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105 | |
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106 | for i in range(0,8): |
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107 | if i==6: |
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108 | val.append(self.reg['o6_sp']) |
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109 | else: |
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110 | val.append(self.reg['o'+str(i)]) |
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111 | return val |
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112 | |
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113 | def status(self): |
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114 | return self.psr(self.reg['psr']) |
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115 | |
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116 | def show(self): |
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117 | print(' Global Regs:',) |
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118 | print(' [',) |
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119 | for i in self.global_regs(): |
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120 | print(str(i)+',',) |
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121 | print('\b\b ]') |
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122 | |
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123 | print(' Local Regs:',) |
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124 | print(' [',) |
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125 | for i in self.local_regs(): |
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126 | print(str(i)+',',) |
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127 | print('\b\b ]') |
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128 | |
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129 | print(' In Regs:',) |
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130 | print(' [',) |
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131 | for i in self.in_regs(): |
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132 | print(str(i)+',',) |
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133 | print('\b\b ]') |
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134 | |
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135 | print(' Out Regs:',) |
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136 | print(' [',) |
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137 | for i in self.out_regs(): |
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138 | print(str(i)+',',) |
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139 | print('\b\b ]') |
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140 | |
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141 | sr = self.status() |
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142 | print(sr.to_string()) |
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