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1 // picoChip ASM file
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2 //.file "ucmpsi2.c"
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3 //
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4 // Support for 32-bit signed compare.
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5 //
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6 // Copyright (C) 2003, 2004, 2005, 2008, 2009 Free Software Foundation, Inc.
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7 // Contributed by picoChip Designs Ltd.
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8 // Maintained by Daniel Towner (daniel.towner@picochip.com)
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9 //
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10 // This file is free software; you can redistribute it and/or modify it
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11 // under the terms of the GNU General Public License as published by the
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12 // Free Software Foundation; either version 3, or (at your option) any
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13 // later version.
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14 //
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15 // This file is distributed in the hope that it will be useful, but
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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18 // General Public License for more details.
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19 //
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20 // Under Section 7 of GPL version 3, you are granted additional
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21 // permissions described in the GCC Runtime Library Exception, version
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22 // 3.1, as published by the Free Software Foundation.
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23 //
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24 // You should have received a copy of the GNU General Public License and
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25 // a copy of the GCC Runtime Library Exception along with this program;
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26 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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27 // <http://www.gnu.org/licenses/>.
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28
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29 // Compiled from the following, and then hand optimised.
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30 //
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31 // int __cmpsi2 (USItype x, USItype y)
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32 // {
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33 //
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34 // SIunion lx; lx.l = x;
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35 // SIunion ly; ly.l = y;
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36 //
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37 // if (lx.s.high < ly.s.high)
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38 // return 0;
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39 // else if (lx.s.high > ly.s.high)
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40 // return 2;
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41 // if (lx.s.low < ly.s.low)
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42 // return 0;
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43 // else if (lx.s.low > ly.s.low)
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44 // return 2;
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45 // return 1;
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46 // }
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47
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48 .section .text
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49
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50 .align 8
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51 .global ___cmpsi2
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52 ___cmpsi2:
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53 _picoMark_FUNCTION_BEGIN=
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54
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55 // picoChip Function Prologue : &___cmpsi2 = 0 bytes
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56
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57 SUB.0 R1,R3,r15
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58
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59 BLT _L1
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60 =-> SUB.0 R3,R1,r15 \ COPY.1 0,R5
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61
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62 BLT _L1
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63 =-> SUB.0 R0,R2,r15 \ COPY.1 2,R5
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64
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65 BLO _L1
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66 =-> SUB.0 R2,R0,r15 \ COPY.1 0,R5
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67
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68 BLO _L1
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69 =-> COPY.0 2,R5
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70
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71 COPY.0 1,R5
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72 _L1:
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73 JR (R12)
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74 =-> COPY.0 R5,R0
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75
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76 _picoMark_FUNCTION_END=
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77 // picoChip Function Epilogue : __cmpsi2
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78 //============================================================================
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79 // All DWARF information between this marker, and the END OF DWARF
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80 // marker should be included in the source file. Search for
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81 // FUNCTION_STACK_SIZE_GOES_HERE and FUNCTION NAME GOES HERE, and
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82 // provide the relevent information. Add markers called
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83 // _picoMark_FUNCTION_BEGIN and _picoMark_FUNCTION_END around the
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84 // function in question.
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85 //============================================================================
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86
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87 //============================================================================
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88 // Frame information.
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89 //============================================================================
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90
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91 .section .debug_frame
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92 _picoMark_DebugFrame=
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93
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94 // Common CIE header.
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95 .unalignedInitLong _picoMark_CieEnd-_picoMark_CieBegin
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96 _picoMark_CieBegin=
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97 .unalignedInitLong 0xffffffff
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98 .initByte 0x1 // CIE Version
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99 .ascii 16#0# // CIE Augmentation
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100 .uleb128 0x1 // CIE Code Alignment Factor
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101 .sleb128 2 // CIE Data Alignment Factor
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102 .initByte 0xc // CIE RA Column
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103 .initByte 0xc // DW_CFA_def_cfa
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104 .uleb128 0xd
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105 .uleb128 0x0
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106 .align 2
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107 _picoMark_CieEnd=
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108
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109 // FDE
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110 _picoMark_LSFDE0I900821033007563=
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111 .unalignedInitLong _picoMark_FdeEnd-_picoMark_FdeBegin
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112 _picoMark_FdeBegin=
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113 .unalignedInitLong _picoMark_DebugFrame // FDE CIE offset
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114 .unalignedInitWord _picoMark_FUNCTION_BEGIN // FDE initial location
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115 .unalignedInitWord _picoMark_FUNCTION_END-_picoMark_FUNCTION_BEGIN
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116 .initByte 0xe // DW_CFA_def_cfa_offset
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117 .uleb128 0x0 // <-- FUNCTION_STACK_SIZE_GOES_HERE
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118 .initByte 0x4 // DW_CFA_advance_loc4
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119 .unalignedInitLong _picoMark_FUNCTION_END-_picoMark_FUNCTION_BEGIN
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120 .initByte 0xe // DW_CFA_def_cfa_offset
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121 .uleb128 0x0
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122 .align 2
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123 _picoMark_FdeEnd=
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124
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125 //============================================================================
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126 // Abbrevation information.
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127 //============================================================================
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128
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129 .section .debug_abbrev
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130 _picoMark_ABBREVIATIONS=
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131
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132 .section .debug_abbrev
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133 .uleb128 0x1 // (abbrev code)
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134 .uleb128 0x11 // (TAG: DW_TAG_compile_unit)
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135 .initByte 0x1 // DW_children_yes
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136 .uleb128 0x10 // (DW_AT_stmt_list)
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137 .uleb128 0x6 // (DW_FORM_data4)
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138 .uleb128 0x12 // (DW_AT_high_pc)
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139 .uleb128 0x1 // (DW_FORM_addr)
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140 .uleb128 0x11 // (DW_AT_low_pc)
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141 .uleb128 0x1 // (DW_FORM_addr)
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142 .uleb128 0x25 // (DW_AT_producer)
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143 .uleb128 0x8 // (DW_FORM_string)
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144 .uleb128 0x13 // (DW_AT_language)
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145 .uleb128 0x5 // (DW_FORM_data2)
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146 .uleb128 0x3 // (DW_AT_name)
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147 .uleb128 0x8 // (DW_FORM_string)
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148 .initByte 0x0
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149 .initByte 0x0
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150
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151 .uleb128 0x2 ;# (abbrev code)
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152 .uleb128 0x2e ;# (TAG: DW_TAG_subprogram)
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153 .initByte 0x0 ;# DW_children_no
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154 .uleb128 0x3 ;# (DW_AT_name)
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155 .uleb128 0x8 ;# (DW_FORM_string)
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156 .uleb128 0x11 ;# (DW_AT_low_pc)
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157 .uleb128 0x1 ;# (DW_FORM_addr)
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158 .uleb128 0x12 ;# (DW_AT_high_pc)
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159 .uleb128 0x1 ;# (DW_FORM_addr)
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160 .initByte 0x0
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161 .initByte 0x0
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162
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163 .initByte 0x0
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164
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165 //============================================================================
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166 // Line information. DwarfLib requires this to be present, but it can
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167 // be empty.
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168 //============================================================================
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169
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170 .section .debug_line
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171 _picoMark_LINES=
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172
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173 //============================================================================
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174 // Debug Information
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175 //============================================================================
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176 .section .debug_info
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177
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178 //Fixed header.
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179 .unalignedInitLong _picoMark_DEBUG_INFO_END-_picoMark_DEBUG_INFO_BEGIN
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180 _picoMark_DEBUG_INFO_BEGIN=
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181 .unalignedInitWord 0x2
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182 .unalignedInitLong _picoMark_ABBREVIATIONS
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183 .initByte 0x2
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184
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185 // Compile unit information.
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186 .uleb128 0x1 // (DIE 0xb) DW_TAG_compile_unit)
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187 .unalignedInitLong _picoMark_LINES
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188 .unalignedInitWord _picoMark_FUNCTION_END
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189 .unalignedInitWord _picoMark_FUNCTION_BEGIN
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190 // Producer is `picoChip'
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191 .ascii 16#70# 16#69# 16#63# 16#6f# 16#43# 16#68# 16#69# 16#70# 16#00#
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192 .unalignedInitWord 0xcafe // ASM language
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193 .ascii 16#0# // Name. DwarfLib expects this to be present.
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194
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195 .uleb128 0x2 ;# (DIE DW_TAG_subprogram)
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196
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197 // FUNCTION NAME GOES HERE. Use `echo name | od -t x1' to get the hex. Each hex
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198 // digit is specified using the format 16#XX#
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199 .ascii 16#5f# 16#5f# 16#63# 16#6d# 16#70# 16#73# 16#69# 16#32# 16#0# // Function name `__cmpsi2'
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200 .unalignedInitWord _picoMark_FUNCTION_BEGIN // DW_AT_low_pc
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201 .unalignedInitWord _picoMark_FUNCTION_END // DW_AT_high_pc
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202
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203 .initByte 0x0 // end of compile unit children.
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204
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205 _picoMark_DEBUG_INFO_END=
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206
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207 //============================================================================
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208 // END OF DWARF
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209 //============================================================================
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210
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211 .section .endFile
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212 // End of picoChip ASM file
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