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1 // picoChip ASM file
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2 //.file "clzsi2.asm"
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3
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4 .section .text
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5
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6 .global __clzsi2
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7 __clzsi2:
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8 _picoMark_FUNCTION_BEGIN=
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9
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10 // picoChip Function Prologue : &__clzsi2 = 0 bytes
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11
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12 // What value should be operated on? If the top word is empty
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13 // then count the bits in the bottom word, and add 16. If the
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14 // top word is not empty, then count the bits in the top word.
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15
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16 // R4 stores the constant 0
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17
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18 sub.0 R1,0,r15 \ copy.1 16,r2
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19 copyeq r0,r1
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20 copyne 0,r2
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21
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22 // R1 now stores value to count, and R2 stores current bit offset.
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23 sbc r1,r0
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24 asr.0 r1,15,r15 \ add.1 r0,1,r0
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25 jr (lr) \ copyne 0,r0
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26 =-> add.0 r0,r2,r0
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27
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28 _picoMark_FUNCTION_END=
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29
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30 // picoChip Function Epilogue : __clzsi2
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31
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32 //============================================================================
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33 // All DWARF information between this marker, and the END OF DWARF
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34 // marker should be included in the source file. Search for
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35 // FUNCTION_STACK_SIZE_GOES_HERE and FUNCTION NAME GOES HERE, and
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36 // provide the relevent information. Add markers called
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37 // _picoMark_FUNCTION_BEGIN and _picoMark_FUNCTION_END around the
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38 // function in question.
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39 //============================================================================
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40
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41 //============================================================================
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42 // Frame information.
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43 //============================================================================
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44
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45 .section .debug_frame
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46 _picoMark_DebugFrame=
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47
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48 // Common CIE header.
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49 .unalignedInitLong _picoMark_CieEnd-_picoMark_CieBegin
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50 _picoMark_CieBegin=
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51 .unalignedInitLong 0xffffffff
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52 .initByte 0x1 // CIE Version
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53 .ascii 16#0# // CIE Augmentation
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54 .uleb128 0x1 // CIE Code Alignment Factor
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55 .sleb128 2 // CIE Data Alignment Factor
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56 .initByte 0xc // CIE RA Column
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57 .initByte 0xc // DW_CFA_def_cfa
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58 .uleb128 0xd
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59 .uleb128 0x0
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60 .align 2
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61 _picoMark_CieEnd=
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62
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63 // FDE
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64 _picoMark_LSFDE0I900821033007563=
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65 .unalignedInitLong _picoMark_FdeEnd-_picoMark_FdeBegin
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66 _picoMark_FdeBegin=
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67 .unalignedInitLong _picoMark_DebugFrame // FDE CIE offset
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68 .unalignedInitWord _picoMark_FUNCTION_BEGIN // FDE initial location
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69 .unalignedInitWord _picoMark_FUNCTION_END-_picoMark_FUNCTION_BEGIN
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70 .initByte 0xe // DW_CFA_def_cfa_offset
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71 .uleb128 0x0 // <-- FUNCTION_STACK_SIZE_GOES_HERE
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72 .initByte 0x4 // DW_CFA_advance_loc4
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73 .unalignedInitLong _picoMark_FUNCTION_END-_picoMark_FUNCTION_BEGIN
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74 .initByte 0xe // DW_CFA_def_cfa_offset
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75 .uleb128 0x0
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76 .align 2
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77 _picoMark_FdeEnd=
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78
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79 //============================================================================
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80 // Abbrevation information.
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81 //============================================================================
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82
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83 .section .debug_abbrev
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84 _picoMark_ABBREVIATIONS=
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85
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86 .section .debug_abbrev
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87 .uleb128 0x1 // (abbrev code)
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88 .uleb128 0x11 // (TAG: DW_TAG_compile_unit)
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89 .initByte 0x1 // DW_children_yes
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90 .uleb128 0x10 // (DW_AT_stmt_list)
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91 .uleb128 0x6 // (DW_FORM_data4)
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92 .uleb128 0x12 // (DW_AT_high_pc)
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93 .uleb128 0x1 // (DW_FORM_addr)
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94 .uleb128 0x11 // (DW_AT_low_pc)
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95 .uleb128 0x1 // (DW_FORM_addr)
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96 .uleb128 0x25 // (DW_AT_producer)
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97 .uleb128 0x8 // (DW_FORM_string)
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98 .uleb128 0x13 // (DW_AT_language)
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99 .uleb128 0x5 // (DW_FORM_data2)
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100 .uleb128 0x3 // (DW_AT_name)
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101 .uleb128 0x8 // (DW_FORM_string)
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102 .initByte 0x0
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103 .initByte 0x0
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104
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105 .uleb128 0x2 ;# (abbrev code)
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106 .uleb128 0x2e ;# (TAG: DW_TAG_subprogram)
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107 .initByte 0x0 ;# DW_children_no
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108 .uleb128 0x3 ;# (DW_AT_name)
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109 .uleb128 0x8 ;# (DW_FORM_string)
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110 .uleb128 0x11 ;# (DW_AT_low_pc)
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111 .uleb128 0x1 ;# (DW_FORM_addr)
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112 .uleb128 0x12 ;# (DW_AT_high_pc)
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113 .uleb128 0x1 ;# (DW_FORM_addr)
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114 .initByte 0x0
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115 .initByte 0x0
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116
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117 .initByte 0x0
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118
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119 //============================================================================
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120 // Line information. DwarfLib requires this to be present, but it can
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121 // be empty.
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122 //============================================================================
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123
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124 .section .debug_line
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125 _picoMark_LINES=
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126
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127 //============================================================================
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128 // Debug Information
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129 //============================================================================
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130 .section .debug_info
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131
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132 //Fixed header.
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133 .unalignedInitLong _picoMark_DEBUG_INFO_END-_picoMark_DEBUG_INFO_BEGIN
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134 _picoMark_DEBUG_INFO_BEGIN=
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135 .unalignedInitWord 0x2
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136 .unalignedInitLong _picoMark_ABBREVIATIONS
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137 .initByte 0x2
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138
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139 // Compile unit information.
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140 .uleb128 0x1 // (DIE 0xb) DW_TAG_compile_unit)
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141 .unalignedInitLong _picoMark_LINES
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142 .unalignedInitWord _picoMark_FUNCTION_END
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143 .unalignedInitWord _picoMark_FUNCTION_BEGIN
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144 // Producer is `picoChip'
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145 .ascii 16#70# 16#69# 16#63# 16#6f# 16#43# 16#68# 16#69# 16#70# 16#00#
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146 .unalignedInitWord 0xcafe // ASM language
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147 .ascii 16#0# // Name. DwarfLib expects this to be present.
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148
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149 .uleb128 0x2 ;# (DIE DW_TAG_subprogram)
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150
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151 // FUNCTION NAME GOES HERE. Use `echo name | od -t x1' to get the hex. Each hex
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152 // digit is specified using the format 16#XX#
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153 .ascii 16#5F# 16#63# 16#6C# 16#7A# 16#73# 16#69# 16#32# 16#0# // Function name `_clzsi2'
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154 .unalignedInitWord _picoMark_FUNCTION_BEGIN // DW_AT_low_pc
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155 .unalignedInitWord _picoMark_FUNCTION_END // DW_AT_high_pc
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156
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157 .initByte 0x0 // end of compile unit children.
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158
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159 _picoMark_DEBUG_INFO_END=
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160
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161 //============================================================================
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162 // END OF DWARF
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163 //============================================================================
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164
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165 .section .endFile
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166 // End of picoChip ASM file
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