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annotate dyncall/dyncall_call_sparc64.s @ 192:cf8134a20759

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- b/c no preproc needed, changed some files from .S -> .s - some format/whitespace cleanup for readability, some declutter
author Tassilo Philipp
date Tue, 14 Mar 2017 14:14:47 +0100
parents dyncall/dyncall_call_sparc64.S@183594497726
children be9cb092625f
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1 /*
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2
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3 Package: dyncall
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4 Library: dyncall
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5 File: dyncall/dyncall_call_sparc64.S
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6 Description: Call kernel for sparc64 (v9) ABI.
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7 License:
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8
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9 Copyright (c) 2011-2015 Daniel Adler <dadler@uni-goettingen.de>
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10
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11 Permission to use, copy, modify, and distribute this software for any
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12 purpose with or without fee is hereby granted, provided that the above
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13 copyright notice and this permission notice appear in all copies.
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14
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15 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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16 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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17 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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18 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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19 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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20 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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21 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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22
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23 */
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24
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25
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26 /* NOTE: %sp/%fp for v9 are offset, using them needs a "BIAS" of 2047 */
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27 .set BIAS, 2047
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28
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29 .text
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30 .global dcCall_v9
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31 /* dcCall_sparc64( DCCallVM* , void * target ) */
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32 /* o0 o1 */
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33 dcCall_v9:
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34 or %o0, %g0, %o3 /* o3: callvm */
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35 or %o1, %g0, %o0 /* o0: target */
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36 ldx [%o3+24], %o1 /* o1: mVecSize */
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37 add %o3, 32, %o2 /* o2: stack */
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38 /* Compute a matching stack size (approximate): o3 = align(o1+136,16) */
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39
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40 add %o1, (16+1+6)*8+15, %o3
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41 and %o3, -16, %o3
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42 neg %o3 /* o3: -stacksize */
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43 save %sp, %o3, %sp
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44
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45 ldd [%i2+8*0 ], %f0 /* Load double-precision float registers. */
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46 ldd [%i2+8*1 ], %f2
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47 ldd [%i2+8*2 ], %f4
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48 ldd [%i2+8*3 ], %f6
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49 ldd [%i2+8*4 ], %f8
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50 ldd [%i2+8*5 ], %f10
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51 ldd [%i2+8*6 ], %f12
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52 ldd [%i2+8*7 ], %f14
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53 ldd [%i2+8*8 ], %f16
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54 ldd [%i2+8*9 ], %f18
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55 ldd [%i2+8*10], %f20
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56 ldd [%i2+8*11], %f22
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57 ldd [%i2+8*12], %f24
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58 ldd [%i2+8*13], %f26
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59 ldd [%i2+8*14], %f28
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60 ldd [%i2+8*15], %f30
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61 ldx [%i2+8*0 ], %o0 /* Load output registers. */
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62 ldx [%i2+8*1 ], %o1
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63 ldx [%i2+8*2 ], %o2
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64 ldx [%i2+8*3 ], %o3
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65 ldx [%i2+8*4 ], %o4
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66 ldx [%i2+8*5 ], %o5
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67 sub %i1, 48, %i1
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68 cmp %i1, 0
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69 ble .do_call
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70 nop
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71 /* Copy loop: */
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72 add %i2, 48, %i2 /* skip homing area */
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73 or %g0, %g0, %l0 /* l0 = offset initialized to 0. */
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74 add %sp, BIAS+((16+6)*8), %l2 /* l2 = argument area on stack space (7th word). (64+4+6*4 = byte offset 92). */
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75 .next:
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76 ldx [%i2+%l0],%l1 /* Read from arg buffer(%i2) to %l1. */
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77 stx %l1, [%l2+%l0] /* Write %l1 to stack space(%l2). */
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78 add %l0, 8, %l0 /* Increment offset. */
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79 sub %i1, 8, %i1 /* Decrement copy size. */
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80 cmp %i1, 0
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81 bgt .next
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82 nop
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83 .do_call:
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84 call %i0 /* Call target. */
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85 nop
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86 or %o0, %g0, %i0
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87 jmpl %i7 + 8, %g0 /* optimized restore;retl;nop */
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88 restore
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89
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90 /*
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91 @@@ all of this needs to go in manual
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92
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93 or %o0, %g0, %i0
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94 or %o1, %g0, %i1
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95 or %o2, %g0, %i2
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96 or %o3, %g0, %i3
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97 return %i7 + 8
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98 nop
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99
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100 Changes from v8:
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101 - fundamental data types
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102 - (un)signed int: 8,16,32,64
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103 - float: 32,64,128
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104 - float: IEEE 754 compilant
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105 32 32-bit float registers f0,f1,..,f31
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106 32 64-bit float registers f0,f2,..,f62
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107 16 128-bit float registers f0,f4,..,f60
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108
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109 Description:
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110 We need to raise up a dynamic stack frame.
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111 Therefore we need to compute the stack size. We do this first,
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112 in the context of the caller as a leaf function (using o3 as scratch for addition).
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113 Then we raise the frame, ending up in o0-o3 is then i0-i3.
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114
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115
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116 Stack Layout:
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117 BIAS = 2047
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118
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119 BIAS+XX: should be 16 byte aligned.
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120 ...
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121 136: argument overflow area
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122 128: 1 extended word for struct/union poiner return value
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123 BIAS+ 0: 16 extended words for registers (in/local) save area [register window]
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124
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125
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126 Function Argument Passing:
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127 - integer %o0..%o5 (caller view).
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128 - floating-point %f0 .. %f15
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129 - continuous memory starting at %sp+BIAS+136 (caller view).
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130
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131 Register Usage:
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132 %fp0..%fp31 : floating-point arguments.
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133 %sp or %o6 : stack pointer, always 8 (or 16?)-byte aligned.
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134 %fp or %i6 : frame pointer.
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135 %i0 and %o0 : integer and pointer return values.
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136 %i7 and %o7 : return address. (caller puts return address to %o7, callee uses %i7)
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137 %fp0 and %fp1: return value (float).
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138 %i0..%i5 : input argument registers
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139 %o0..%o5 : output argument registers
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140 %g0 : always zero, writes to it have no effect.
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141
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142 Register Mappings:
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143 r0-7 -> globals
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144 r8-15 -> outs
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145 r16-r23 -> locals
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146 r24-r31 -> ins
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147
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148 Integer Register Overview Table:
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149 ID Class Name Description
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150 ------------------------------------------------------------------------------
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151 0 globals g0 always zero, writes to it have no effect
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152 1 g1
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153 2 g2
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154 3 g3
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155 4 g4
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156 5 g5
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157 6 g6
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158 7 g7
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159 8 out o0 [int/ptr] arg 0 and return
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160 9 o1 arg 1
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161 10 o2 arg 2
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
162 11 o3 arg 3
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
163 12 o4 arg 4
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
164 13 o5 arg 5
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
165 14 o6 stack pointer
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
166 15 o7
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
167 16 local l0 scratch
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
168 17 l1
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
169 18 l2
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
170 19 l3
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
171 20 l4
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
172 21 l5
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
173 22 l6
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
174 23 l7
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
175 24 in i0 [int/pt] arg 0 and return
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
176 25 i1
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
177 26 i2
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
178 27 i3
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
179 28 i4
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
180 29 i5
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
181 30 i6 frame pointer
cf8134a20759 - b/c no preproc needed, changed some files from .S -> .s
Tassilo Philipp
parents: 178
diff changeset
182 31 i7
0
3e629dc19168 initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
183 */
3e629dc19168 initial from svn dyncall-1745
Daniel Adler
parents:
diff changeset
184