Mercurial > pub > dyncall > dyncall
annotate doc/disas_examples/mips.o32.disas @ 498:fd9ba3a6d348
- corrections in tool usage in lastly added disas_examples
| author | Tassilo Philipp |
|---|---|
| date | Wed, 23 Mar 2022 15:33:09 +0100 |
| parents | cb19b2fe2422 |
| children | fc614cb865c6 |
| rev | line source |
|---|---|
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1 ; #include <stdlib.h> |
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2 ; |
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3 ; void leaf_call(int b, int c, int d, int e, int f, int g, int h) |
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4 ; { |
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5 ; } |
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6 ; |
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7 ; void nonleaf_call(int a, int b, int c, int d, int e, int f, int g, int h) |
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8 ; { |
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9 ; /* use some local data */ |
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10 ; *(char*)alloca(220) = 'L'; |
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11 ; leaf_call(b, c, d, e, f, g, h); |
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12 ; } |
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13 ; |
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14 ; int main() |
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15 ; { |
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16 ; nonleaf_call(0, 1, 2, 3, 4, 5, 6, 7); |
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17 ; return 0; |
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18 ; } |
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19 |
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20 |
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21 |
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22 ; output from freebsd-12.0_r333647-malta_mipselhf w/ gcc 4.2.1 -----> |
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23 |
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24 00000000 <leaf_call>: |
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25 0: 3c1c0000 lui gp,0x0 |
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26 4: 279c0000 addiu gp,gp,0 |
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27 8: 0399e021 addu gp,gp,t9 |
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28 c: 27bdfff8 addiu sp,sp,-8 |
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29 10: afbe0000 sw s8,0(sp) |
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30 14: 03a0f021 move s8,sp |
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31 18: afc40008 sw a0,8(s8) |
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32 1c: afc5000c sw a1,12(s8) |
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33 20: afc60010 sw a2,16(s8) |
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34 24: afc70014 sw a3,20(s8) |
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35 28: 03c0e821 move sp,s8 |
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36 2c: 8fbe0000 lw s8,0(sp) |
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37 30: 03e00008 jr ra |
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38 34: 27bd0008 addiu sp,sp,8 |
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39 |
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40 00000038 <nonleaf_call>: |
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41 38: 3c1c0000 lui gp,0x0 ; | |
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42 3c: 279c0000 addiu gp,gp,0 ; | |
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43 40: 0399e021 addu gp,gp,t9 ; | |
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44 44: 27bdffc8 addiu sp,sp,-56 ; | prolog |
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45 48: afbf0034 sw ra,52(sp) ; | |
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46 4c: afbe0030 sw s8,48(sp) ; | |
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47 50: 03a0f021 move s8,sp ; | frame pointer (note: with offset to frame start, but static compared to sp) |
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48 54: afbc0020 sw gp,32(sp) ; / |
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49 58: afc40038 sw a0,56(s8) ; \ |
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50 5c: afc5003c sw a1,60(s8) ; | |
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51 60: afc60040 sw a2,64(s8) ; | spill first 4 args into prev frame's reserved spill space in param area (although not actually needing to spill, here but just do a temp copy, but space is reserved for them anyways) |
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52 64: afc70044 sw a3,68(s8) ; | |
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53 68: 27bdff18 addiu sp,sp,-232 ; alloca(220) - with padding to guarantee alignment |
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54 6c: 27a20020 addiu v0,sp,32 ; | |
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55 70: afc20028 sw v0,40(s8) ; | |
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56 74: 8fc30028 lw v1,40(s8) ; | start of alloca()'d memory -> v1, by ... |
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57 78: 24620007 addiu v0,v1,7 ; | ... using v0 as helper to align to 8b |
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58 7c: 000210c2 srl v0,v0,0x3 ; | @@@ unsure about use of helper space at 40(s8) in prev frame..? |
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59 80: 000210c0 sll v0,v0,0x3 ; | |
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60 84: afc20028 sw v0,40(s8) ; | |
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61 88: 8fc30028 lw v1,40(s8) ; | |
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62 8c: 2402004c li v0,76 ; 'L' -> v0, and... |
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63 90: a0620000 sb v0,0(v1) ; ... store in local area (of alloca()'d space) |
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64 94: 8fc2004c lw v0,76(s8) ; arg 4 (fetched from prev frame's param area), and ... |
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65 98: afa20010 sw v0,16(sp) ; ... "pushed" onto stack |
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66 9c: 8fc20050 lw v0,80(s8) ; arg 5 (fetched from prev frame's param area), and ... |
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67 a0: afa20014 sw v0,20(sp) ; ... "pushed" onto stack |
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68 a4: 8fc20054 lw v0,84(s8) ; arg 6 (fetched from prev frame's param area), and ... |
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69 a8: afa20018 sw v0,24(sp) ; ... "pushed" onto stack |
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70 ac: 8fc4003c lw a0,60(s8) ; arg 0 (fetched from spill area of prev frame) |
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71 b0: 8fc50040 lw a1,64(s8) ; arg 1 (fetched from spill area of prev frame) |
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72 b4: 8fc60044 lw a2,68(s8) ; arg 2 (fetched from spill area of prev frame) |
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73 b8: 8fc70048 lw a3,72(s8) ; arg 3 (fetched from prev frame's param area) |
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74 bc: 8f990000 lw t9,0(gp) ; func to call -> t9 |
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75 c0: 0320f809 jalr t9 ; call and ret addr -> ra |
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76 c4: 00000000 nop ; branch delay slot |
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77 c8: 8fdc0020 lw gp,32(s8) ; | |
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78 cc: 03c0e821 move sp,s8 ; | |
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79 d0: 8fbf0034 lw ra,52(sp) ; | |
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80 d4: 8fbe0030 lw s8,48(sp) ; | epilog |
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81 d8: 03e00008 jr ra ; | |
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82 dc: 27bd0038 addiu sp,sp,56 ; | |
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83 |
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84 000000e0 <main>: |
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85 e0: 3c1c0000 lui gp,0x0 ; | |
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86 e4: 279c0000 addiu gp,gp,0 ; | |
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87 e8: 0399e021 addu gp,gp,t9 ; | |
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88 ec: 27bdffd0 addiu sp,sp,-48 ; | prolog |
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89 f0: afbf002c sw ra,44(sp) ; | |
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90 f4: afbe0028 sw s8,40(sp) ; | |
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91 f8: 03a0f021 move s8,sp ; | frame pointer (note: with offset to frame start, but static compared to sp) |
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92 fc: afbc0020 sw gp,32(sp) ; | |
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93 100: 24020004 li v0,4 ; arg 4, and ... |
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94 104: afa20010 sw v0,16(sp) ; ... "pushed" onto stack |
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95 108: 24020005 li v0,5 ; arg 5, and ... |
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96 10c: afa20014 sw v0,20(sp) ; ... "pushed" onto stack |
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97 110: 24020006 li v0,6 ; arg 6, and ... |
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98 114: afa20018 sw v0,24(sp) ; ... "pushed" onto stack |
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99 118: 24020007 li v0,7 ; arg 7, and ... |
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100 11c: afa2001c sw v0,28(sp) ; ... "pushed" onto stack |
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101 120: 00002021 move a0,zero ; arg 0 |
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102 124: 24050001 li a1,1 ; arg 1 |
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103 128: 24060002 li a2,2 ; arg 2 |
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104 12c: 24070003 li a3,3 ; arg 3 |
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105 130: 8f990000 lw t9,0(gp) ; func to call -> t9 |
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106 134: 0320f809 jalr t9 ; call and ret addr -> ra |
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107 138: 00000000 nop ; branch delay slot |
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108 13c: 8fdc0020 lw gp,32(s8) ; | |
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109 140: 00001021 move v0,zero ; : return value: not part of epilog, but unordered (branch delay slot style) |
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110 144: 03c0e821 move sp,s8 ; | |
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111 148: 8fbf002c lw ra,44(sp) ; | epilog |
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112 14c: 8fbe0028 lw s8,40(sp) ; | |
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113 150: 03e00008 jr ra ; | |
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114 154: 27bd0030 addiu sp,sp,48 ; | |
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115 |
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116 |
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117 |
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118 ; output from netbsd-5.0.2-pmax_mipsel_o32 w/ gcc 4.1.3 -----> |
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119 ; nearly the same, equivalent to above except non-optimal use of branch delay slots and $gp preserving in leaf call |
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120 |
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121 00000000 <leaf_call>: |
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122 0: 27bdfff8 addiu sp,sp,-8 |
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123 4: afbe0000 sw s8,0(sp) |
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124 8: 03a0f021 move s8,sp |
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125 c: afc40008 sw a0,8(s8) |
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126 10: afc5000c sw a1,12(s8) |
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127 14: afc60010 sw a2,16(s8) |
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128 18: afc70014 sw a3,20(s8) |
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129 1c: 03c0e821 move sp,s8 |
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130 20: 8fbe0000 lw s8,0(sp) |
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131 24: 27bd0008 addiu sp,sp,8 |
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132 28: 03e00008 jr ra |
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133 2c: 00000000 nop |
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134 |
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135 00000030 <nonleaf_call>: |
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136 30: 3c1c0000 lui gp,0x0 |
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137 34: 279c0000 addiu gp,gp,0 |
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138 38: 0399e021 addu gp,gp,t9 |
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139 3c: 27bdffc8 addiu sp,sp,-56 |
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140 40: afbf0034 sw ra,52(sp) |
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141 44: afbe0030 sw s8,48(sp) |
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142 48: 03a0f021 move s8,sp |
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143 4c: afbc0020 sw gp,32(sp) |
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144 50: afc40038 sw a0,56(s8) |
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145 54: afc5003c sw a1,60(s8) |
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146 58: afc60040 sw a2,64(s8) |
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147 5c: afc70044 sw a3,68(s8) |
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148 60: 27bdff18 addiu sp,sp,-232 |
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149 64: 27a20020 addiu v0,sp,32 |
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150 68: afc20028 sw v0,40(s8) |
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151 6c: 8fc30028 lw v1,40(s8) |
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152 70: 00000000 nop |
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153 |
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154 74: 24620007 addiu v0,v1,7 |
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155 78: 000210c2 srl v0,v0,0x3 |
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156 7c: 000210c0 sll v0,v0,0x3 |
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157 80: afc20028 sw v0,40(s8) |
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158 84: 8fc30028 lw v1,40(s8) |
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159 88: 2402004c li v0,76 |
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160 8c: a0620000 sb v0,0(v1) |
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161 90: 8fc2004c lw v0,76(s8) |
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162 94: 00000000 nop |
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163 98: afa20010 sw v0,16(sp) |
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164 9c: 8fc20050 lw v0,80(s8) |
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165 a0: 00000000 nop |
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166 a4: afa20014 sw v0,20(sp) |
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167 a8: 8fc20054 lw v0,84(s8) |
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168 ac: 00000000 nop |
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169 b0: afa20018 sw v0,24(sp) |
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170 b4: 8fc4003c lw a0,60(s8) |
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171 b8: 8fc50040 lw a1,64(s8) |
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172 bc: 8fc60044 lw a2,68(s8) |
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173 c0: 8fc70048 lw a3,72(s8) |
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174 c4: 8f990000 lw t9,0(gp) |
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175 c8: 00000000 nop |
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176 cc: 0320f809 jalr t9 |
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177 d0: 00000000 nop |
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178 d4: 8fdc0020 lw gp,32(s8) |
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179 d8: 03c0e821 move sp,s8 |
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180 dc: 8fbf0034 lw ra,52(sp) |
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181 e0: 8fbe0030 lw s8,48(sp) |
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182 e4: 27bd0038 addiu sp,sp,56 |
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183 e8: 03e00008 jr ra |
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184 ec: 00000000 nop |
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185 |
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186 000000f0 <main>: |
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187 f0: 3c1c0000 lui gp,0x0 |
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188 f4: 279c0000 addiu gp,gp,0 |
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189 f8: 0399e021 addu gp,gp,t9 |
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190 fc: 27bdffd0 addiu sp,sp,-48 |
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191 100: afbf002c sw ra,44(sp) |
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192 104: afbe0028 sw s8,40(sp) |
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193 108: 03a0f021 move s8,sp |
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194 10c: afbc0020 sw gp,32(sp) |
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195 110: 24020004 li v0,4 |
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196 114: afa20010 sw v0,16(sp) |
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197 118: 24020005 li v0,5 |
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198 11c: afa20014 sw v0,20(sp) |
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199 120: 24020006 li v0,6 |
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200 124: afa20018 sw v0,24(sp) |
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201 128: 24020007 li v0,7 |
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202 12c: afa2001c sw v0,28(sp) |
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203 130: 00002021 move a0,zero |
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204 134: 24050001 li a1,1 |
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205 138: 24060002 li a2,2 |
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206 13c: 24070003 li a3,3 |
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207 140: 8f990000 lw t9,0(gp) |
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208 144: 00000000 nop |
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209 148: 0320f809 jalr t9 |
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210 14c: 00000000 nop |
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211 150: 8fdc0020 lw gp,32(s8) |
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212 154: 00001021 move v0,zero |
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213 158: 03c0e821 move sp,s8 |
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214 15c: 8fbf002c lw ra,44(sp) |
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215 160: 8fbe0028 lw s8,40(sp) |
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216 164: 27bd0030 addiu sp,sp,48 |
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217 168: 03e00008 jr ra |
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218 16c: 00000000 nop |
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219 |
| 478 | 220 |
| 221 | |
| 222 ; ---------- structs by value ----------> | |
| 223 ; | |
| 224 ; struct A { int i, j; long long l; }; | |
| 225 ; | |
| 226 ; void leaf_call(int b, int c, int d, int e, struct A f, int g, int h) | |
| 227 ; { | |
| 228 ; } | |
| 229 ; | |
| 230 ; void nonleaf_call(int a, int b, int c, int d, int e, struct A f, int g, int h) | |
| 231 ; { | |
| 232 ; /* use some local data */ | |
| 233 ; char l[100] ={ 'L'}; | |
| 234 ; leaf_call(b, c, d, e, f, g, h); | |
| 235 ; } | |
| 236 ; | |
| 237 ; int main() | |
| 238 ; { | |
| 239 ; nonleaf_call(0, 1, 2, 3, 4, (struct A){5, 6, 7ll}, 8, 9); | |
| 240 ; return 0; | |
| 241 ; } | |
| 242 | |
| 243 | |
| 244 | |
| 245 ; output from freebsd-12.0_r333647-malta_mipsebhf w/ gcc 4.2.1 -----> | |
| 246 | |
| 247 00000000 <leaf_call>: | |
| 248 0: 3c1c0000 lui gp,0x0 | |
| 249 4: 279c0000 addiu gp,gp,0 | |
| 250 8: 0399e021 addu gp,gp,t9 | |
| 251 c: 27bdfff8 addiu sp,sp,-8 | |
| 252 10: afbe0000 sw s8,0(sp) | |
| 253 14: 03a0f021 move s8,sp | |
| 254 18: afc40008 sw a0,8(s8) | |
| 255 1c: afc5000c sw a1,12(s8) | |
| 256 20: afc60010 sw a2,16(s8) | |
| 257 24: afc70014 sw a3,20(s8) | |
| 258 28: 03c0e821 move sp,s8 | |
| 259 2c: 8fbe0000 lw s8,0(sp) | |
| 260 30: 03e00008 jr ra | |
| 261 34: 27bd0008 addiu sp,sp,8 | |
| 262 | |
| 263 00000038 <nonleaf_call>: | |
| 264 38: 3c1c0000 lui gp,0x0 | |
| 265 3c: 279c0000 addiu gp,gp,0 | |
| 266 40: 0399e021 addu gp,gp,t9 | |
| 267 44: 27bdff60 addiu sp,sp,-160 | |
| 268 48: afbf009c sw ra,156(sp) | |
| 269 4c: afbe0098 sw s8,152(sp) | |
| 270 50: 03a0f021 move s8,sp | |
| 271 54: afbc0028 sw gp,40(sp) | |
| 272 58: afc400a0 sw a0,160(s8) | |
| 273 5c: afc500a4 sw a1,164(s8) | |
| 274 60: afc600a8 sw a2,168(s8) | |
| 275 64: afc700ac sw a3,172(s8) | |
| 276 68: 27c20030 addiu v0,s8,48 | |
| 277 6c: 24030064 li v1,100 | |
| 278 70: 00402021 move a0,v0 | |
| 279 74: 00002821 move a1,zero | |
| 280 78: 00603021 move a2,v1 | |
| 281 7c: 8f990000 lw t9,0(gp) | |
| 282 80: 0320f809 jalr t9 | |
| 283 84: 00000000 nop | |
| 284 88: 8fdc0028 lw gp,40(s8) | |
| 285 8c: 2402004c li v0,76 | |
| 286 90: a3c20030 sb v0,48(s8) | |
| 287 94: 8fc200b8 lw v0,184(s8) | |
| 288 98: 8fc300bc lw v1,188(s8) | |
| 289 9c: 8fc400c0 lw a0,192(s8) | |
| 290 a0: 8fc500c4 lw a1,196(s8) | |
| 291 a4: afa20010 sw v0,16(sp) | |
| 292 a8: afa30014 sw v1,20(sp) | |
| 293 ac: afa40018 sw a0,24(sp) | |
| 294 b0: afa5001c sw a1,28(sp) | |
| 295 b4: 8fc200c8 lw v0,200(s8) | |
| 296 b8: afa20020 sw v0,32(sp) | |
| 297 bc: 8fc200cc lw v0,204(s8) | |
| 298 c0: afa20024 sw v0,36(sp) | |
| 299 c4: 8fc400a4 lw a0,164(s8) | |
| 300 c8: 8fc500a8 lw a1,168(s8) | |
| 301 cc: 8fc600ac lw a2,172(s8) | |
| 302 d0: 8fc700b0 lw a3,176(s8) | |
| 303 d4: 8f990000 lw t9,0(gp) | |
| 304 d8: 0320f809 jalr t9 | |
| 305 dc: 00000000 nop | |
| 306 e0: 8fdc0028 lw gp,40(s8) | |
| 307 e4: 03c0e821 move sp,s8 | |
| 308 e8: 8fbf009c lw ra,156(sp) | |
| 309 ec: 8fbe0098 lw s8,152(sp) | |
| 310 f0: 03e00008 jr ra | |
| 311 f4: 27bd00a0 addiu sp,sp,160 | |
| 312 | |
| 313 000000f8 <main>: | |
| 314 f8: 3c1c0000 lui gp,0x0 ; | | |
| 315 fc: 279c0000 addiu gp,gp,0 ; | | |
| 316 100: 0399e021 addu gp,gp,t9 ; | | |
| 317 104: 27bdffb0 addiu sp,sp,-80 ; | prolog | |
| 318 108: afbf004c sw ra,76(sp) ; | | |
| 319 10c: afbe0048 sw s8,72(sp) ; | | |
| 320 110: 03a0f021 move s8,sp ; | frame pointer (note: with offset to frame start, but static compared to sp) | |
| 321 114: afbc0030 sw gp,48(sp) ; / | |
| 322 118: 8f820000 lw v0,0(gp) ; \ \ | |
| 323 11c: 24420000 addiu v0,v0,0 ; | | field j -> v0 | |
| 324 120: 8c420000 lw v0,0(v0) ; | / | |
| 325 124: 8f830000 lw v1,0(gp) ; | \ | |
| 326 128: 24630000 addiu v1,v1,0 ; | | field j -> v1 | |
| 327 12c: 8c630004 lw v1,4(v1) ; | prep local struct A data ... / | |
| 328 130: 8f840000 lw a0,0(gp) ; | \ | |
| 329 134: 24840000 addiu a0,a0,0 ; | | | |
| 330 138: 8c840008 lw a0,8(a0) ; | | field l -> a0 & a1 | |
| 331 13c: 8f850000 lw a1,0(gp) ; | | | |
| 332 140: 24a50000 addiu a1,a1,0 ; | | | |
| 333 144: 8ca5000c lw a1,12(a1) ; / / | |
| 334 148: afc20038 sw v0,56(s8) ; \ | |
| 335 14c: afc3003c sw v1,60(s8) ; | ... and write to local area | |
| 336 150: afc40040 sw a0,64(s8) ; | | |
| 337 154: afc50044 sw a1,68(s8) ; / | |
| 338 158: 24020004 li v0,4 ; push arg 4 ... | |
| 339 15c: afa20010 sw v0,16(sp) ; ... onto stack | |
| 340 160: 8fc20038 lw v0,56(s8) ; \ | |
| 341 164: 8fc3003c lw v1,60(s8) ; | | |
| 342 168: 8fc40040 lw a0,64(s8) ; | prep arg 5 (struct A) ... | |
| 343 16c: 8fc50044 lw a1,68(s8) ; / | |
| 344 170: afa20018 sw v0,24(sp) ; \ | |
| 345 174: afa3001c sw v1,28(sp) ; | ... and push onto stack | |
| 346 178: afa40020 sw a0,32(sp) ; | | |
| 347 17c: afa50024 sw a1,36(sp) ; / | |
| 348 180: 24020008 li v0,8 ; push arg 6 ... | |
| 349 184: afa20028 sw v0,40(sp) ; ... onto stack | |
| 350 188: 24020009 li v0,9 ; push arg 7 ... | |
| 351 18c: afa2002c sw v0,44(sp) ; ... onto stack | |
| 352 190: 00002021 move a0,zero ; arg 0 | |
| 353 194: 24050001 li a1,1 ; arg 1 | |
| 354 198: 24060002 li a2,2 ; arg 2 | |
| 355 19c: 24070003 li a3,3 ; arg 3 | |
| 356 1a0: 8f990000 lw t9,0(gp) ; func to call -> t9 | |
| 357 1a4: 0320f809 jalr t9 ; call and ret addr -> ra | |
| 358 1a8: 00000000 nop ; branch delay slot | |
| 359 1ac: 8fdc0030 lw gp,48(s8) ; | | |
| 360 1b0: 00001021 move v0,zero ; : return value: not part of epilog, but unordered (branch delay slot style) | |
| 361 1b4: 03c0e821 move sp,s8 ; | | |
| 362 1b8: 8fbf004c lw ra,76(sp) ; | epilog | |
| 363 1bc: 8fbe0048 lw s8,72(sp) ; | | |
| 364 1c0: 03e00008 jr ra ; | | |
| 365 1c4: 27bd0050 addiu sp,sp,80 ; | | |
| 366 ... | |
| 367 | |
| 368 | |
| 369 | |
| 370 ; output from freebsd-12.0_r333647-malta_mipsebhf w/ gcc 4.2.1 *and* -mhard-float -----> | |
| 371 | |
| 372 00000000 <leaf_call>: | |
| 373 0: 3c1c0000 lui gp,0x0 | |
| 374 4: 279c0000 addiu gp,gp,0 | |
| 375 8: 0399e021 addu gp,gp,t9 | |
| 376 c: 27bdfff8 addiu sp,sp,-8 | |
| 377 10: afbe0000 sw s8,0(sp) | |
| 378 14: 03a0f021 move s8,sp | |
| 379 18: afc40008 sw a0,8(s8) | |
| 380 1c: afc5000c sw a1,12(s8) | |
| 381 20: afc60010 sw a2,16(s8) | |
| 382 24: afc70014 sw a3,20(s8) | |
| 383 28: 03c0e821 move sp,s8 | |
| 384 2c: 8fbe0000 lw s8,0(sp) | |
| 385 30: 03e00008 jr ra | |
| 386 34: 27bd0008 addiu sp,sp,8 | |
| 387 | |
| 388 00000038 <nonleaf_call>: | |
| 389 38: 3c1c0000 lui gp,0x0 | |
| 390 3c: 279c0000 addiu gp,gp,0 | |
| 391 40: 0399e021 addu gp,gp,t9 | |
| 392 44: 27bdff60 addiu sp,sp,-160 | |
| 393 48: afbf009c sw ra,156(sp) | |
| 394 4c: afbe0098 sw s8,152(sp) | |
| 395 50: 03a0f021 move s8,sp | |
| 396 54: afbc0028 sw gp,40(sp) | |
| 397 58: afc400a0 sw a0,160(s8) | |
| 398 5c: afc500a4 sw a1,164(s8) | |
| 399 60: afc600a8 sw a2,168(s8) | |
| 400 64: afc700ac sw a3,172(s8) | |
| 401 68: 27c20030 addiu v0,s8,48 | |
| 402 6c: 24030064 li v1,100 | |
| 403 70: 00402021 move a0,v0 | |
| 404 74: 00002821 move a1,zero | |
| 405 78: 00603021 move a2,v1 | |
| 406 7c: 8f990000 lw t9,0(gp) | |
| 407 80: 0320f809 jalr t9 | |
| 408 84: 00000000 nop | |
| 409 88: 8fdc0028 lw gp,40(s8) | |
| 410 8c: 2402004c li v0,76 | |
| 411 90: a3c20030 sb v0,48(s8) | |
| 412 94: 8fc200b8 lw v0,184(s8) | |
| 413 98: 8fc300bc lw v1,188(s8) | |
| 414 9c: 8fc400c0 lw a0,192(s8) | |
| 415 a0: 8fc500c4 lw a1,196(s8) | |
| 416 a4: afa20010 sw v0,16(sp) | |
| 417 a8: afa30014 sw v1,20(sp) | |
| 418 ac: afa40018 sw a0,24(sp) | |
| 419 b0: afa5001c sw a1,28(sp) | |
| 420 b4: 8fc200c8 lw v0,200(s8) | |
| 421 b8: afa20020 sw v0,32(sp) | |
| 422 bc: 8fc200cc lw v0,204(s8) | |
| 423 c0: afa20024 sw v0,36(sp) | |
| 424 c4: 8fc400a4 lw a0,164(s8) | |
| 425 c8: 8fc500a8 lw a1,168(s8) | |
| 426 cc: 8fc600ac lw a2,172(s8) | |
| 427 d0: 8fc700b0 lw a3,176(s8) | |
| 428 d4: 8f990000 lw t9,0(gp) | |
| 429 d8: 0320f809 jalr t9 | |
| 430 dc: 00000000 nop | |
| 431 e0: 8fdc0028 lw gp,40(s8) | |
| 432 e4: 03c0e821 move sp,s8 | |
| 433 e8: 8fbf009c lw ra,156(sp) | |
| 434 ec: 8fbe0098 lw s8,152(sp) | |
| 435 f0: 03e00008 jr ra | |
| 436 f4: 27bd00a0 addiu sp,sp,160 | |
| 437 | |
| 438 000000f8 <main>: | |
| 439 f8: 3c1c0000 lui gp,0x0 ; | | |
| 440 fc: 279c0000 addiu gp,gp,0 ; | | |
| 441 100: 0399e021 addu gp,gp,t9 ; | | |
| 442 104: 27bdffb0 addiu sp,sp,-80 ; | prolog | |
| 443 108: afbf004c sw ra,76(sp) ; | | |
| 444 10c: afbe0048 sw s8,72(sp) ; | | |
| 445 110: 03a0f021 move s8,sp ; | frame pointer (note: with offset to frame start, but static compared to sp) | |
| 446 114: afbc0030 sw gp,48(sp) ; / | |
| 447 118: 8f820000 lw v0,0(gp) ; \ \ | |
| 448 11c: 24420000 addiu v0,v0,0 ; | | field j -> v0 | |
| 449 120: 8c420000 lw v0,0(v0) ; | / | |
| 450 124: 8f830000 lw v1,0(gp) ; | \ | |
| 451 128: 24630000 addiu v1,v1,0 ; | | field j -> v1 | |
| 452 12c: 8c630004 lw v1,4(v1) ; | prep local struct A data ... / | |
| 453 130: 8f840000 lw a0,0(gp) ; | \ | |
| 454 134: 24840000 addiu a0,a0,0 ; | | | |
| 455 138: 8c840008 lw a0,8(a0) ; | | field l -> a0 & a1 | |
| 456 13c: 8f850000 lw a1,0(gp) ; | | | |
| 457 140: 24a50000 addiu a1,a1,0 ; | | | |
| 458 144: 8ca5000c lw a1,12(a1) ; / / | |
| 459 148: afc20038 sw v0,56(s8) ; \ | |
| 460 14c: afc3003c sw v1,60(s8) ; | ... and write to local area | |
| 461 150: afc40040 sw a0,64(s8) ; | | |
| 462 154: afc50044 sw a1,68(s8) ; / | |
| 463 158: 24020004 li v0,4 ; push arg 4 ... | |
| 464 15c: afa20010 sw v0,16(sp) ; ... onto stack | |
| 465 160: 8fc20038 lw v0,56(s8) ; \ | |
| 466 164: 8fc3003c lw v1,60(s8) ; | | |
| 467 168: 8fc40040 lw a0,64(s8) ; | prep arg 5 (struct A) ... | |
| 468 16c: 8fc50044 lw a1,68(s8) ; / | |
| 469 170: afa20018 sw v0,24(sp) ; \ | |
| 470 174: afa3001c sw v1,28(sp) ; | ... and push onto stack | |
| 471 178: afa40020 sw a0,32(sp) ; | | |
| 472 17c: afa50024 sw a1,36(sp) ; / | |
| 473 180: 24020008 li v0,8 ; push arg 6 ... | |
| 474 184: afa20028 sw v0,40(sp) ; ... onto stack | |
| 475 188: 24020009 li v0,9 ; push arg 7 ... | |
| 476 18c: afa2002c sw v0,44(sp) ; ... onto stack | |
| 477 190: 00002021 move a0,zero ; arg 0 | |
| 478 194: 24050001 li a1,1 ; arg 1 | |
| 479 198: 24060002 li a2,2 ; arg 2 | |
| 480 19c: 24070003 li a3,3 ; arg 3 | |
| 481 1a0: 8f990000 lw t9,0(gp) ; func to call -> t9 | |
| 482 1a4: 0320f809 jalr t9 ; call and ret addr -> ra | |
| 483 1a8: 00000000 nop ; branch delay slot | |
| 484 1ac: 8fdc0030 lw gp,48(s8) ; | | |
| 485 1b0: 00001021 move v0,zero ; : return value: not part of epilog, but unordered (branch delay slot style) | |
| 486 1b4: 03c0e821 move sp,s8 ; | | |
| 487 1b8: 8fbf004c lw ra,76(sp) ; | epilog | |
| 488 1bc: 8fbe0048 lw s8,72(sp) ; | | |
| 489 1c0: 03e00008 jr ra ; | | |
| 490 1c4: 27bd0050 addiu sp,sp,80 ; | | |
| 491 ... | |
| 492 | |
| 493 | |
| 494 | |
| 495 ; ---------- structs by value, complex example (multiple structs) ----------> | |
| 496 ; | |
| 497 ; struct A { int i, j; float f; }; | |
| 498 ; struct B { double d; long long l; }; | |
| 499 ; | |
| 500 ; void leaf_call(int b, struct A c, struct B d, int e, int f, struct A g, struct B h, int i, int j) | |
| 501 ; { | |
| 502 ; } | |
| 503 ; | |
| 504 ; void nonleaf_call(int a, int b, struct A c, struct B d, int e, int f, struct A g, struct B h, int i, int j) | |
| 505 ; { | |
| 506 ; /* use some local data */ | |
| 507 ; char l[100] ={ 'L'}; | |
| 508 ; leaf_call(b, c, d, e, f, g, h, i, j); | |
| 509 ; } | |
| 510 ; | |
| 511 ; int main() | |
| 512 ; { | |
| 513 ; nonleaf_call(0, 1, (struct A){2, 3, 4.f}, (struct B){5., 6ll}, 7, 8, (struct A){9, 10, 11.f}, (struct B){12., 13ll}, 14, 15); | |
| 514 ; return 0; | |
| 515 ; } | |
| 516 | |
| 517 | |
| 518 | |
| 519 ; output from freebsd-12.0_r333647-malta_mipsebhf w/ gcc 4.2.1 -----> | |
| 520 | |
| 521 00000000 <leaf_call>: | |
| 522 0: 3c1c0000 lui gp,0x0 | |
| 523 4: 279c0000 addiu gp,gp,0 | |
| 524 8: 0399e021 addu gp,gp,t9 | |
| 525 c: 27bdfff8 addiu sp,sp,-8 | |
| 526 10: afbe0000 sw s8,0(sp) | |
| 527 14: 03a0f021 move s8,sp | |
| 528 18: afc40008 sw a0,8(s8) | |
| 529 1c: afc5000c sw a1,12(s8) | |
| 530 20: afc60010 sw a2,16(s8) | |
| 531 24: afc70014 sw a3,20(s8) | |
| 532 28: 03c0e821 move sp,s8 | |
| 533 2c: 8fbe0000 lw s8,0(sp) | |
| 534 30: 03e00008 jr ra | |
| 535 34: 27bd0008 addiu sp,sp,8 | |
| 536 | |
| 537 00000038 <nonleaf_call>: | |
| 538 38: 3c1c0000 lui gp,0x0 | |
| 539 3c: 279c0000 addiu gp,gp,0 | |
| 540 40: 0399e021 addu gp,gp,t9 | |
| 541 44: 27bdff38 addiu sp,sp,-200 | |
| 542 48: afbf00c4 sw ra,196(sp) | |
| 543 4c: afbe00c0 sw s8,192(sp) | |
| 544 50: 03a0f021 move s8,sp | |
| 545 54: afbc0050 sw gp,80(sp) | |
| 546 58: afc400c8 sw a0,200(s8) | |
| 547 5c: afc500cc sw a1,204(s8) | |
| 548 60: afc600d0 sw a2,208(s8) | |
| 549 64: afc700d4 sw a3,212(s8) | |
| 550 68: 27c20058 addiu v0,s8,88 | |
| 551 6c: 24030064 li v1,100 | |
| 552 70: 00402021 move a0,v0 | |
| 553 74: 00002821 move a1,zero | |
| 554 78: 00603021 move a2,v1 | |
| 555 7c: 8f990000 lw t9,0(gp) | |
| 556 80: 0320f809 jalr t9 | |
| 557 84: 00000000 nop | |
| 558 88: 8fdc0050 lw gp,80(s8) | |
| 559 8c: 2402004c li v0,76 | |
| 560 90: a3c20058 sb v0,88(s8) | |
| 561 94: 8fc200e0 lw v0,224(s8) | |
| 562 98: 8fc300e4 lw v1,228(s8) | |
| 563 9c: 8fc400e8 lw a0,232(s8) | |
| 564 a0: 8fc500ec lw a1,236(s8) | |
| 565 a4: afa20010 sw v0,16(sp) | |
| 566 a8: afa30014 sw v1,20(sp) | |
| 567 ac: afa40018 sw a0,24(sp) | |
| 568 b0: afa5001c sw a1,28(sp) | |
| 569 b4: 8fc200f0 lw v0,240(s8) | |
| 570 b8: afa20020 sw v0,32(sp) | |
| 571 bc: 8fc200f4 lw v0,244(s8) | |
| 572 c0: afa20024 sw v0,36(sp) | |
| 573 c4: 8fc200f8 lw v0,248(s8) | |
| 574 c8: 8fc300fc lw v1,252(s8) | |
| 575 cc: 8fc40100 lw a0,256(s8) | |
| 576 d0: afa20028 sw v0,40(sp) | |
| 577 d4: afa3002c sw v1,44(sp) | |
| 578 d8: afa40030 sw a0,48(sp) | |
| 579 dc: 8fc20108 lw v0,264(s8) | |
| 580 e0: 8fc3010c lw v1,268(s8) | |
| 581 e4: 8fc40110 lw a0,272(s8) | |
| 582 e8: 8fc50114 lw a1,276(s8) | |
| 583 ec: afa20038 sw v0,56(sp) | |
| 584 f0: afa3003c sw v1,60(sp) | |
| 585 f4: afa40040 sw a0,64(sp) | |
| 586 f8: afa50044 sw a1,68(sp) | |
| 587 fc: 8fc20118 lw v0,280(s8) | |
| 588 100: afa20048 sw v0,72(sp) | |
| 589 104: 8fc2011c lw v0,284(s8) | |
| 590 108: afa2004c sw v0,76(sp) | |
| 591 10c: 8fc400cc lw a0,204(s8) | |
| 592 110: 8fc500d0 lw a1,208(s8) | |
| 593 114: 8fc600d4 lw a2,212(s8) | |
| 594 118: 8fc700d8 lw a3,216(s8) | |
| 595 11c: 8f990000 lw t9,0(gp) | |
| 596 120: 0320f809 jalr t9 | |
| 597 124: 00000000 nop | |
| 598 128: 8fdc0050 lw gp,80(s8) | |
| 599 12c: 03c0e821 move sp,s8 | |
| 600 130: 8fbf00c4 lw ra,196(sp) | |
| 601 134: 8fbe00c0 lw s8,192(sp) | |
| 602 138: 03e00008 jr ra | |
| 603 13c: 27bd00c8 addiu sp,sp,200 | |
| 604 | |
| 605 00000140 <main>: | |
| 606 140: 3c1c0000 lui gp,0x0 ; | | |
| 607 144: 279c0000 addiu gp,gp,0 ; | | |
| 608 148: 0399e021 addu gp,gp,t9 ; | | |
| 609 14c: 27bdff58 addiu sp,sp,-168 ; | prolog | |
| 610 150: afbf00a4 sw ra,164(sp) ; | | |
| 611 154: afbe00a0 sw s8,160(sp) ; | | |
| 612 158: 03a0f021 move s8,sp ; | frame pointer (note: with offset to frame start, but static compared to sp) | |
| 613 15c: afbc0058 sw gp,88(sp) ; / | |
| 614 160: 8f820000 lw v0,0(gp) ; \ | | |
| 615 164: 24420030 addiu v0,v0,48 ; | | field j -> v0 | |
| 616 168: 8c420000 lw v0,0(v0) ; | / | |
| 617 16c: 8f830000 lw v1,0(gp) ; | prep (first) local struct A data ... \ | |
| 618 170: 24630030 addiu v1,v1,48 ; | | field j -> v1 | |
| 619 174: 8c630004 lw v1,4(v1) ; | / | |
| 620 178: 8f840000 lw a0,0(gp) ; | \ | |
| 621 17c: 24840030 addiu a0,a0,48 ; | | field f -> a0 | |
| 622 180: 8c840008 lw a0,8(a0) ; / | | |
| 623 184: afc20090 sw v0,144(s8) ; \ | |
| 624 188: afc30094 sw v1,148(s8) ; | ... and write to local area | |
| 625 18c: afc40098 sw a0,152(s8) ; / | |
| 626 190: 8f820000 lw v0,0(gp) ; \ | | |
| 627 194: 24420020 addiu v0,v0,32 ; | | | |
| 628 198: 8c420000 lw v0,0(v0) ; | | | |
| 629 19c: 8f830000 lw v1,0(gp) ; | | field d -> v0 & v1 | |
| 630 1a0: 24630020 addiu v1,v1,32 ; | | | |
| 631 1a4: 8c630004 lw v1,4(v1) ; | prep (first) local struct B data ... / | |
| 632 1a8: 8f840000 lw a0,0(gp) ; | \ | |
| 633 1ac: 24840020 addiu a0,a0,32 ; | | | |
| 634 1b0: 8c840008 lw a0,8(a0) ; | | | |
| 635 1b4: 8f850000 lw a1,0(gp) ; | | field l -> a0 & a1 | |
| 636 1b8: 24a50020 addiu a1,a1,32 ; | | | |
| 637 1bc: 8ca5000c lw a1,12(a1) ; / | | |
| 638 1c0: afc20080 sw v0,128(s8) ; \ | |
| 639 1c4: afc30084 sw v1,132(s8) ; | | |
| 640 1c8: afc40088 sw a0,136(s8) ; | ... and write to local area | |
| 641 1cc: afc5008c sw a1,140(s8) ; / | |
| 642 1d0: 8f820000 lw v0,0(gp) ; \ | | |
| 643 1d4: 24420010 addiu v0,v0,16 ; | | field j -> v0 | |
| 644 1d8: 8c420000 lw v0,0(v0) ; | / | |
| 645 1dc: 8f830000 lw v1,0(gp) ; | prep (second) local struct A data ... \ | |
| 646 1e0: 24630010 addiu v1,v1,16 ; | | field j -> v1 | |
| 647 1e4: 8c630004 lw v1,4(v1) ; | / | |
| 648 1e8: 8f840000 lw a0,0(gp) ; | \ | |
| 649 1ec: 24840010 addiu a0,a0,16 ; | | field f -> a0 | |
| 650 1f0: 8c840008 lw a0,8(a0) ; / | | |
| 651 1f4: afc20070 sw v0,112(s8) ; \ | |
| 652 1f8: afc30074 sw v1,116(s8) ; | ... and write to local area | |
| 653 1fc: afc40078 sw a0,120(s8) ; / | |
| 654 200: 8f820000 lw v0,0(gp) ; \ | | |
| 655 204: 24420000 addiu v0,v0,0 ; | | | |
| 656 208: 8c420000 lw v0,0(v0) ; | | | |
| 657 20c: 8f830000 lw v1,0(gp) ; | | field d -> v0 & v1 | |
| 658 210: 24630000 addiu v1,v1,0 ; | | | |
| 659 214: 8c630004 lw v1,4(v1) ; | prep (second) local struct B data ... / | |
| 660 218: 8f840000 lw a0,0(gp) ; | \ | |
| 661 21c: 24840000 addiu a0,a0,0 ; | | | |
| 662 220: 8c840008 lw a0,8(a0) ; | | | |
| 663 224: 8f850000 lw a1,0(gp) ; | | field l -> a0 & a1 | |
| 664 228: 24a50000 addiu a1,a1,0 ; | | | |
| 665 22c: 8ca5000c lw a1,12(a1) ; / | | |
| 666 230: afc20060 sw v0,96(s8) ; \ | |
| 667 234: afc30064 sw v1,100(s8) ; | | |
| 668 238: afc40068 sw a0,104(s8) ; | ... and write to local area | |
| 669 23c: afc5006c sw a1,108(s8) ; / | |
| 670 240: 8fc20080 lw v0,128(s8) ; \ | |
| 671 244: 8fc30084 lw v1,132(s8) ; | | |
| 672 248: 8fc40088 lw a0,136(s8) ; | | |
| 673 24c: 8fc5008c lw a1,140(s8) ; | | |
| 674 250: afa20018 sw v0,24(sp) ; | | d | |
| 675 254: afa3001c sw v1,28(sp) ; | arg 3 (first struct B) / | |
| 676 258: afa40020 sw a0,32(sp) ; | \ | |
| 677 25c: afa50024 sw a1,36(sp) ; / | l | |
| 678 260: 24020007 li v0,7 ; \ | |
| 679 264: afa20028 sw v0,40(sp) ; / arg 4 | |
| 680 268: 24020008 li v0,8 ; \ | |
| 681 26c: afa2002c sw v0,44(sp) ; / arg 5 | |
| 682 270: 8fc20070 lw v0,112(s8) ; \ | |
| 683 274: 8fc30074 lw v1,116(s8) ; | | |
| 684 278: 8fc40078 lw a0,120(s8) ; | arg 6 (second struct A, note that 60(sp) isn't used, so sizeof(struct A) is probably a padded 16) | |
| 685 27c: afa20030 sw v0,48(sp) ; | i | |
| 686 280: afa30034 sw v1,52(sp) ; | j | |
| 687 284: afa40038 sw a0,56(sp) ; / f | |
| 688 288: 8fc20060 lw v0,96(s8) ; \ | |
| 689 28c: 8fc30064 lw v1,100(s8) ; | | |
| 690 290: 8fc40068 lw a0,104(s8) ; | | |
| 691 294: 8fc5006c lw a1,108(s8) ; | | |
| 692 298: afa20040 sw v0,64(sp) ; | | d | |
| 693 29c: afa30044 sw v1,68(sp) ; | arg 7 (second struct B) / | |
| 694 2a0: afa40048 sw a0,72(sp) ; | \ | |
| 695 2a4: afa5004c sw a1,76(sp) ; | | l | |
| 696 2a8: 2402000e li v0,14 ; arg 8 pushed ... | |
| 697 2ac: afa20050 sw v0,80(sp) ; ... onto stack | |
| 698 2b0: 2402000f li v0,15 ; arg 9 pushed ... | |
| 699 2b4: afa20054 sw v0,84(sp) ; ... onto stack | |
| 700 2b8: 8fc20098 lw v0,152(s8) ; | | f (via stack, first slot after save area) | |
| 701 2bc: afa20010 sw v0,16(sp) ; | | note that 20(sp) isn't used, so sizeof(struct A) is probably a padded 16 | |
| 702 2c0: 8fc60090 lw a2,144(s8) ; | arg 2 (first struct A) i (via reg) | |
| 703 2c4: 8fc70094 lw a3,148(s8) ; | j (via reg) | |
| 704 2c8: 00002021 move a0,zero ; arg 0 | |
| 705 2cc: 24050001 li a1,1 ; arg 1 | |
| 706 2d0: 8f990000 lw t9,0(gp) ; func to call -> t9 | |
| 707 2d4: 0320f809 jalr t9 ; call and ret addr -> ra | |
| 708 2d8: 00000000 nop ; branch delay slot | |
| 709 2dc: 8fdc0058 lw gp,88(s8) ; | | |
| 710 2e0: 00001021 move v0,zero ; : return value: not part of epilog, but unordered (branch delay slot style) | |
| 711 2e4: 03c0e821 move sp,s8 ; | | |
| 712 2e8: 8fbf00a4 lw ra,164(sp) ; | epilog | |
| 713 2ec: 8fbe00a0 lw s8,160(sp) ; | | |
| 714 2f0: 03e00008 jr ra ; | | |
| 715 2f4: 27bd00a8 addiu sp,sp,168 ; | | |
| 716 ... | |
| 717 | |
| 718 | |
| 719 | |
| 720 ; output from freebsd-12.0_r333647-malta_mipsebhf w/ gcc 4.2.1 *and* -mhard-float -----> | |
| 721 | |
| 722 00000000 <leaf_call>: | |
| 723 0: 3c1c0000 lui gp,0x0 | |
| 724 4: 279c0000 addiu gp,gp,0 | |
| 725 8: 0399e021 addu gp,gp,t9 | |
| 726 c: 27bdfff8 addiu sp,sp,-8 | |
| 727 10: afbe0000 sw s8,0(sp) | |
| 728 14: 03a0f021 move s8,sp | |
| 729 18: afc40008 sw a0,8(s8) | |
| 730 1c: afc5000c sw a1,12(s8) | |
| 731 20: afc60010 sw a2,16(s8) | |
| 732 24: afc70014 sw a3,20(s8) | |
| 733 28: 03c0e821 move sp,s8 | |
| 734 2c: 8fbe0000 lw s8,0(sp) | |
| 735 30: 03e00008 jr ra | |
| 736 34: 27bd0008 addiu sp,sp,8 | |
| 737 | |
| 738 00000038 <nonleaf_call>: | |
| 739 38: 3c1c0000 lui gp,0x0 | |
| 740 3c: 279c0000 addiu gp,gp,0 | |
| 741 40: 0399e021 addu gp,gp,t9 | |
| 742 44: 27bdff38 addiu sp,sp,-200 | |
| 743 48: afbf00c4 sw ra,196(sp) | |
| 744 4c: afbe00c0 sw s8,192(sp) | |
| 745 50: 03a0f021 move s8,sp | |
| 746 54: afbc0050 sw gp,80(sp) | |
| 747 58: afc400c8 sw a0,200(s8) | |
| 748 5c: afc500cc sw a1,204(s8) | |
| 749 60: afc600d0 sw a2,208(s8) | |
| 750 64: afc700d4 sw a3,212(s8) | |
| 751 68: 27c20058 addiu v0,s8,88 | |
| 752 6c: 24030064 li v1,100 | |
| 753 70: 00402021 move a0,v0 | |
| 754 74: 00002821 move a1,zero | |
| 755 78: 00603021 move a2,v1 | |
| 756 7c: 8f990000 lw t9,0(gp) | |
| 757 80: 0320f809 jalr t9 | |
| 758 84: 00000000 nop | |
| 759 88: 8fdc0050 lw gp,80(s8) | |
| 760 8c: 2402004c li v0,76 | |
| 761 90: a3c20058 sb v0,88(s8) | |
| 762 94: 8fc200e0 lw v0,224(s8) | |
| 763 98: 8fc300e4 lw v1,228(s8) | |
| 764 9c: 8fc400e8 lw a0,232(s8) | |
| 765 a0: 8fc500ec lw a1,236(s8) | |
| 766 a4: afa20010 sw v0,16(sp) | |
| 767 a8: afa30014 sw v1,20(sp) | |
| 768 ac: afa40018 sw a0,24(sp) | |
| 769 b0: afa5001c sw a1,28(sp) | |
| 770 b4: 8fc200f0 lw v0,240(s8) | |
| 771 b8: afa20020 sw v0,32(sp) | |
| 772 bc: 8fc200f4 lw v0,244(s8) | |
| 773 c0: afa20024 sw v0,36(sp) | |
| 774 c4: 8fc200f8 lw v0,248(s8) | |
| 775 c8: 8fc300fc lw v1,252(s8) | |
| 776 cc: 8fc40100 lw a0,256(s8) | |
| 777 d0: afa20028 sw v0,40(sp) | |
| 778 d4: afa3002c sw v1,44(sp) | |
| 779 d8: afa40030 sw a0,48(sp) | |
| 780 dc: 8fc20108 lw v0,264(s8) | |
| 781 e0: 8fc3010c lw v1,268(s8) | |
| 782 e4: 8fc40110 lw a0,272(s8) | |
| 783 e8: 8fc50114 lw a1,276(s8) | |
| 784 ec: afa20038 sw v0,56(sp) | |
| 785 f0: afa3003c sw v1,60(sp) | |
| 786 f4: afa40040 sw a0,64(sp) | |
| 787 f8: afa50044 sw a1,68(sp) | |
| 788 fc: 8fc20118 lw v0,280(s8) | |
| 789 100: afa20048 sw v0,72(sp) | |
| 790 104: 8fc2011c lw v0,284(s8) | |
| 791 108: afa2004c sw v0,76(sp) | |
| 792 10c: 8fc400cc lw a0,204(s8) | |
| 793 110: 8fc500d0 lw a1,208(s8) | |
| 794 114: 8fc600d4 lw a2,212(s8) | |
| 795 118: 8fc700d8 lw a3,216(s8) | |
| 796 11c: 8f990000 lw t9,0(gp) | |
| 797 120: 0320f809 jalr t9 | |
| 798 124: 00000000 nop | |
| 799 128: 8fdc0050 lw gp,80(s8) | |
| 800 12c: 03c0e821 move sp,s8 | |
| 801 130: 8fbf00c4 lw ra,196(sp) | |
| 802 134: 8fbe00c0 lw s8,192(sp) | |
| 803 138: 03e00008 jr ra | |
| 804 13c: 27bd00c8 addiu sp,sp,200 | |
| 805 | |
| 806 00000140 <main>: | |
| 807 140: 3c1c0000 lui gp,0x0 ; | | |
| 808 144: 279c0000 addiu gp,gp,0 ; | | |
| 809 148: 0399e021 addu gp,gp,t9 ; | | |
| 810 14c: 27bdff58 addiu sp,sp,-168 ; | prolog | |
| 811 150: afbf00a4 sw ra,164(sp) ; | | |
| 812 154: afbe00a0 sw s8,160(sp) ; | | |
| 813 158: 03a0f021 move s8,sp ; | frame pointer (note: with offset to frame start, but static compared to sp) | |
| 814 15c: afbc0058 sw gp,88(sp) ; / | |
| 815 160: 8f820000 lw v0,0(gp) ; \ | | |
| 816 164: 24420030 addiu v0,v0,48 ; | | field j -> v0 | |
| 817 168: 8c420000 lw v0,0(v0) ; | / | |
| 818 16c: 8f830000 lw v1,0(gp) ; | prep (first) local struct A data ... \ | |
| 819 170: 24630030 addiu v1,v1,48 ; | | field j -> v1 | |
| 820 174: 8c630004 lw v1,4(v1) ; | / | |
| 821 178: 8f840000 lw a0,0(gp) ; | \ | |
| 822 17c: 24840030 addiu a0,a0,48 ; | | field f -> a0 | |
| 823 180: 8c840008 lw a0,8(a0) ; / | | |
| 824 184: afc20090 sw v0,144(s8) ; \ | |
| 825 188: afc30094 sw v1,148(s8) ; | ... and write to local area | |
| 826 18c: afc40098 sw a0,152(s8) ; / | |
| 827 190: 8f820000 lw v0,0(gp) ; \ | | |
| 828 194: 24420020 addiu v0,v0,32 ; | | | |
| 829 198: 8c420000 lw v0,0(v0) ; | | | |
| 830 19c: 8f830000 lw v1,0(gp) ; | | field d -> v0 & v1 | |
| 831 1a0: 24630020 addiu v1,v1,32 ; | | | |
| 832 1a4: 8c630004 lw v1,4(v1) ; | prep (first) local struct B data ... / | |
| 833 1a8: 8f840000 lw a0,0(gp) ; | \ | |
| 834 1ac: 24840020 addiu a0,a0,32 ; | | | |
| 835 1b0: 8c840008 lw a0,8(a0) ; | | | |
| 836 1b4: 8f850000 lw a1,0(gp) ; | | field l -> a0 & a1 | |
| 837 1b8: 24a50020 addiu a1,a1,32 ; | | | |
| 838 1bc: 8ca5000c lw a1,12(a1) ; / | | |
| 839 1c0: afc20080 sw v0,128(s8) ; \ | |
| 840 1c4: afc30084 sw v1,132(s8) ; | | |
| 841 1c8: afc40088 sw a0,136(s8) ; | ... and write to local area | |
| 842 1cc: afc5008c sw a1,140(s8) ; / | |
| 843 1d0: 8f820000 lw v0,0(gp) ; \ | | |
| 844 1d4: 24420010 addiu v0,v0,16 ; | | field j -> v0 | |
| 845 1d8: 8c420000 lw v0,0(v0) ; | / | |
| 846 1dc: 8f830000 lw v1,0(gp) ; | prep (second) local struct A data ... \ | |
| 847 1e0: 24630010 addiu v1,v1,16 ; | | field j -> v1 | |
| 848 1e4: 8c630004 lw v1,4(v1) ; | / | |
| 849 1e8: 8f840000 lw a0,0(gp) ; | \ | |
| 850 1ec: 24840010 addiu a0,a0,16 ; | | field f -> a0 | |
| 851 1f0: 8c840008 lw a0,8(a0) ; / | | |
| 852 1f4: afc20070 sw v0,112(s8) ; \ | |
| 853 1f8: afc30074 sw v1,116(s8) ; | ... and write to local area | |
| 854 1fc: afc40078 sw a0,120(s8) ; / | |
| 855 200: 8f820000 lw v0,0(gp) ; \ | | |
| 856 204: 24420000 addiu v0,v0,0 ; | | | |
| 857 208: 8c420000 lw v0,0(v0) ; | | | |
| 858 20c: 8f830000 lw v1,0(gp) ; | | field d -> v0 & v1 | |
| 859 210: 24630000 addiu v1,v1,0 ; | | | |
| 860 214: 8c630004 lw v1,4(v1) ; | prep (second) local struct B data ... / | |
| 861 218: 8f840000 lw a0,0(gp) ; | \ | |
| 862 21c: 24840000 addiu a0,a0,0 ; | | | |
| 863 220: 8c840008 lw a0,8(a0) ; | | | |
| 864 224: 8f850000 lw a1,0(gp) ; | | field l -> a0 & a1 | |
| 865 228: 24a50000 addiu a1,a1,0 ; | | | |
| 866 22c: 8ca5000c lw a1,12(a1) ; / | | |
| 867 230: afc20060 sw v0,96(s8) ; \ | |
| 868 234: afc30064 sw v1,100(s8) ; | | |
| 869 238: afc40068 sw a0,104(s8) ; | ... and write to local area | |
| 870 23c: afc5006c sw a1,108(s8) ; / | |
| 871 240: 8fc20080 lw v0,128(s8) ; \ | |
| 872 244: 8fc30084 lw v1,132(s8) ; | | |
| 873 248: 8fc40088 lw a0,136(s8) ; | | |
| 874 24c: 8fc5008c lw a1,140(s8) ; | | |
| 875 250: afa20018 sw v0,24(sp) ; | | d | |
| 876 254: afa3001c sw v1,28(sp) ; | arg 3 (first struct B) / | |
| 877 258: afa40020 sw a0,32(sp) ; | \ | |
| 878 25c: afa50024 sw a1,36(sp) ; / | l | |
| 879 260: 24020007 li v0,7 ; \ | |
| 880 264: afa20028 sw v0,40(sp) ; / arg 4 | |
| 881 268: 24020008 li v0,8 ; \ | |
| 882 26c: afa2002c sw v0,44(sp) ; / arg 5 | |
| 883 270: 8fc20070 lw v0,112(s8) ; \ | |
| 884 274: 8fc30074 lw v1,116(s8) ; | | |
| 885 278: 8fc40078 lw a0,120(s8) ; | arg 6 (second struct A, note that 60(sp) isn't used, so sizeof(struct A) is probably a padded 16) | |
| 886 27c: afa20030 sw v0,48(sp) ; | i | |
| 887 280: afa30034 sw v1,52(sp) ; | j | |
| 888 284: afa40038 sw a0,56(sp) ; / f | |
| 889 288: 8fc20060 lw v0,96(s8) ; \ | |
| 890 28c: 8fc30064 lw v1,100(s8) ; | | |
| 891 290: 8fc40068 lw a0,104(s8) ; | | |
| 892 294: 8fc5006c lw a1,108(s8) ; | | |
| 893 298: afa20040 sw v0,64(sp) ; | | d | |
| 894 29c: afa30044 sw v1,68(sp) ; | arg 7 (second struct B) / | |
| 895 2a0: afa40048 sw a0,72(sp) ; | \ | |
| 896 2a4: afa5004c sw a1,76(sp) ; | | l | |
| 897 2a8: 2402000e li v0,14 ; arg 8 pushed ... | |
| 898 2ac: afa20050 sw v0,80(sp) ; ... onto stack | |
| 899 2b0: 2402000f li v0,15 ; arg 9 pushed ... | |
| 900 2b4: afa20054 sw v0,84(sp) ; ... onto stack | |
| 901 2b8: 8fc20098 lw v0,152(s8) ; | | f (via stack, first slot after save area) | |
| 902 2bc: afa20010 sw v0,16(sp) ; | | note that 20(sp) isn't used, so sizeof(struct A) is probably a padded 16 | |
| 903 2c0: 8fc60090 lw a2,144(s8) ; | arg 2 (first struct A) i (via reg) | |
| 904 2c4: 8fc70094 lw a3,148(s8) ; | j (via reg) | |
| 905 2c8: 00002021 move a0,zero ; arg 0 | |
| 906 2cc: 24050001 li a1,1 ; arg 1 | |
| 907 2d0: 8f990000 lw t9,0(gp) ; func to call -> t9 | |
| 908 2d4: 0320f809 jalr t9 ; call and ret addr -> ra | |
| 909 2d8: 00000000 nop ; branch delay slot | |
| 910 2dc: 8fdc0058 lw gp,88(s8) ; | | |
| 911 2e0: 00001021 move v0,zero ; : return value: not part of epilog, but unordered (branch delay slot style) | |
| 912 2e4: 03c0e821 move sp,s8 ; | | |
| 913 2e8: 8fbf00a4 lw ra,164(sp) ; | epilog | |
| 914 2ec: 8fbe00a0 lw s8,160(sp) ; | | |
| 915 2f0: 03e00008 jr ra ; | | |
| 916 2f4: 27bd00a8 addiu sp,sp,168 ; | | |
| 917 ... | |
| 918 | |
| 919 | |
| 920 | |
| 921 ; ---------- returning structs by value ----------> | |
| 922 ; | |
| 923 ; struct Small { char x; }; | |
| 924 ; struct Big { long long i,j,k,l; long m; }; /* bigger than 16b */ | |
| 925 ; | |
| 926 ; struct Small f0() | |
| 927 ; { | |
| 928 ; struct Small s = { 132 }; | |
| 929 ; return s; | |
| 930 ; } | |
| 931 ; | |
| 932 ; struct Big f1() | |
| 933 ; { | |
| 934 ; struct Big b = { 7171LL, 99LL, -99LL, -3102LL, 32 }; | |
| 935 ; return b; | |
| 936 ; } | |
| 937 ; | |
| 938 ; int main() | |
| 939 ; { | |
| 940 ; struct Small s = f0(); | |
| 941 ; struct Big b = f1(); | |
| 942 ; return b.j + b.k + b.m + s.x; | |
| 943 ; } | |
| 944 | |
| 945 | |
| 946 | |
| 947 ; output from freebsd-12.0_r333647-malta_mipsebhf w/ gcc 4.2.1 -----> | |
| 948 | |
| 949 00000000 <f0>: | |
| 950 0: 3c1c0000 lui gp,0x0 ; | | |
| 951 4: 279c0000 addiu gp,gp,0 ; | | |
| 952 8: 0399e021 addu gp,gp,t9 ; | prolog | |
| 953 c: 27bdffe8 addiu sp,sp,-24 ; | | |
| 954 10: afbe0010 sw s8,16(sp) ; | | |
| 955 14: 03a0f021 move s8,sp ; | | |
| 956 18: 00801021 move v0,a0 ; hidden first arg (ptr to struct ret) -> v0 | |
| 957 1c: 2403ff84 li v1,-124 ; | put together local struct | |
| 958 20: a3c30008 sb v1,8(s8) ; / | |
| 959 24: 93c30008 lbu v1,8(s8) ; read struct data from local area ... | |
| 960 28: a0430000 sb v1,0(v0) ; ... and write to return value area | |
| 961 2c: 03c0e821 move sp,s8 ; \ | |
| 962 30: 8fbe0010 lw s8,16(sp) ; | | |
| 963 34: 03e00008 jr ra ; | epilog | |
| 964 38: 27bd0018 addiu sp,sp,24 ; | | |
| 965 | |
| 966 0000003c <f1>: | |
| 967 3c: 3c1c0000 lui gp,0x0 ; | | |
| 968 40: 279c0000 addiu gp,gp,0 ; | | |
| 969 44: 0399e021 addu gp,gp,t9 ; | | |
| 970 48: 27bdffb0 addiu sp,sp,-80 ; | | |
| 971 4c: afbf0048 sw ra,72(sp) ; | prolog | |
| 972 50: afbe0044 sw s8,68(sp) ; | | |
| 973 54: afb00040 sw s0,64(sp) ; | | |
| 974 58: 03a0f021 move s8,sp ; | | |
| 975 5c: afbc0010 sw gp,16(sp) ; | | |
| 976 60: 00808021 move s0,a0 ; hidden first arg (ptr to struct ret) -> s0 | |
| 977 64: 27c20018 addiu v0,s8,24 ; | |
| 978 68: 8f830000 lw v1,0(gp) ; | |
| 979 6c: 24630000 addiu v1,v1,0 ; | |
| 980 70: 24060028 li a2,40 ; | |
| 981 74: 00402021 move a0,v0 ; | |
| 982 78: 00602821 move a1,v1 ; | |
| 983 7c: 8f990000 lw t9,0(gp) ; | |
| 984 80: 0320f809 jalr t9 ; | |
| 985 84: 00000000 nop ; @@@ unsure why those two jumps, but seems to put return value data together | |
| 986 88: 8fdc0010 lw gp,16(s8) ; | |
| 987 8c: 02001021 move v0,s0 ; | |
| 988 90: 27c30018 addiu v1,s8,24 ; | |
| 989 94: 24060028 li a2,40 ; | |
| 990 98: 00402021 move a0,v0 ; | |
| 991 9c: 00602821 move a1,v1 ; | |
| 992 a0: 8f990000 lw t9,0(gp) ; | |
| 993 a4: 0320f809 jalr t9 ; | |
| 994 a8: 00000000 nop ; | |
| 995 ac: 8fdc0010 lw gp,16(s8) ; | | |
| 996 b0: 02001021 move v0,s0 ; : return value (hidden ptr): not part of epilog, but unordered (branch delay slot style) | |
| 997 b4: 03c0e821 move sp,s8 ; | | |
| 998 b8: 8fbf0048 lw ra,72(sp) ; | | |
| 999 bc: 8fbe0044 lw s8,68(sp) ; | epilog | |
| 1000 c0: 8fb00040 lw s0,64(sp) ; | | |
| 1001 c4: 03e00008 jr ra ; | | |
| 1002 c8: 27bd0050 addiu sp,sp,80 ; | | |
| 1003 | |
| 1004 000000cc <main>: | |
| 1005 cc: 3c1c0000 lui gp,0x0 ; | | |
| 1006 d0: 279c0000 addiu gp,gp,0 ; | | |
| 1007 d4: 0399e021 addu gp,gp,t9 ; | | |
| 1008 d8: 27bdffb0 addiu sp,sp,-80 ; | | |
| 1009 dc: afbf004c sw ra,76(sp) ; | prolog | |
| 1010 e0: afbe0048 sw s8,72(sp) ; | | |
| 1011 e4: 03a0f021 move s8,sp ; | | |
| 1012 e8: afbc0010 sw gp,16(sp) ; / | |
| 1013 ec: 27c20018 addiu v0,s8,24 ; \ | |
| 1014 f0: 00402021 move a0,v0 ; | hidden first arg (ptr to space for ret val) | |
| 1015 f4: 8f990000 lw t9,0(gp) ; func to call (f0) -> t9 | |
| 1016 f8: 0320f809 jalr t9 ; call and ret addr -> ra | |
| 1017 fc: 00000000 nop ; branch delay slot | |
| 1018 100: 8fdc0010 lw gp,16(s8) ; restore gp @@@ unsure why? | |
| 1019 104: 27c20020 addiu v0,s8,32 ; | | |
| 1020 108: 00402021 move a0,v0 ; | hidden first arg (ptr to space for ret val) | |
| 1021 10c: 8f990000 lw t9,0(gp) ; func to call (f1) -> t9 | |
| 1022 110: 0320f809 jalr t9 ; call and ret addr -> ra | |
| 1023 114: 00000000 nop ; branch delay slot | |
| 1024 118: 8fdc0010 lw gp,16(s8) ; restore gp @@@ unsure why? | |
| 1025 11c: 8fc3002c lw v1,44(s8) ; | | | |
| 1026 120: 8fc20028 lw v0,40(s8) ; | | b.j -> v0 & v1 | |
| 1027 124: 00602021 move a0,v1 ; | a0 = (int)b.j | |
| 1028 128: 8fc30034 lw v1,52(s8) ; | | | |
| 1029 12c: 8fc20030 lw v0,48(s8) ; | | b.j -> v0 & v1 | |
| 1030 130: 00601021 move v0,v1 ; | return value v0 = (int)b.k | |
| 1031 134: 00821821 addu v1,a0,v0 ; | (int)b.j + (int)b.k -> v1 | |
| 1032 138: 8fc20040 lw v0,64(s8) ; | b.m -> v0 | |
| 1033 13c: 00621821 addu v1,v1,v0 ; | ((int)b.j + (int)b.k) + b.m -> v1 | |
| 1034 140: 83c20018 lb v0,24(s8) ; | s.x -> v0 | |
| 1035 144: 00621021 addu v0,v1,v0 ; / (((int)b.j + (int)b.k) + b.m) + s.x -> v0 | |
| 1036 148: 03c0e821 move sp,s8 ; \ | |
| 1037 14c: 8fbf004c lw ra,76(sp) ; | | |
| 1038 150: 8fbe0048 lw s8,72(sp) ; | epilog | |
| 1039 154: 03e00008 jr ra ; | | |
| 1040 158: 27bd0050 addiu sp,sp,80 ; | | |
| 1041 15c: 00000000 nop ; | | |
| 1042 | |
| 1043 | |
| 1044 | |
| 1045 ; output from freebsd-12.0_r333647-malta_mipsebhf w/ gcc 4.2.1 *and* -mhard-float -----> | |
| 1046 | |
| 1047 00000000 <f0>: | |
| 1048 0: 3c1c0000 lui gp,0x0 | |
| 1049 4: 279c0000 addiu gp,gp,0 | |
| 1050 8: 0399e021 addu gp,gp,t9 | |
| 1051 c: 27bdffe8 addiu sp,sp,-24 | |
| 1052 10: afbe0010 sw s8,16(sp) | |
| 1053 14: 03a0f021 move s8,sp | |
| 1054 18: 00801021 move v0,a0 | |
| 1055 1c: 2403ff84 li v1,-124 | |
| 1056 20: a3c30008 sb v1,8(s8) | |
| 1057 24: 93c30008 lbu v1,8(s8) | |
| 1058 28: a0430000 sb v1,0(v0) | |
| 1059 2c: 03c0e821 move sp,s8 | |
| 1060 30: 8fbe0010 lw s8,16(sp) | |
| 1061 34: 03e00008 jr ra | |
| 1062 38: 27bd0018 addiu sp,sp,24 | |
| 1063 | |
| 1064 0000003c <f1>: | |
| 1065 3c: 3c1c0000 lui gp,0x0 | |
| 1066 40: 279c0000 addiu gp,gp,0 | |
| 1067 44: 0399e021 addu gp,gp,t9 | |
| 1068 48: 27bdffb0 addiu sp,sp,-80 | |
| 1069 4c: afbf0048 sw ra,72(sp) | |
| 1070 50: afbe0044 sw s8,68(sp) | |
| 1071 54: afb00040 sw s0,64(sp) | |
| 1072 58: 03a0f021 move s8,sp | |
| 1073 5c: afbc0010 sw gp,16(sp) | |
| 1074 60: 00808021 move s0,a0 | |
| 1075 64: 27c20018 addiu v0,s8,24 | |
| 1076 68: 8f830000 lw v1,0(gp) | |
| 1077 6c: 24630000 addiu v1,v1,0 | |
| 1078 70: 24060028 li a2,40 | |
| 1079 74: 00402021 move a0,v0 | |
| 1080 78: 00602821 move a1,v1 | |
| 1081 7c: 8f990000 lw t9,0(gp) | |
| 1082 80: 0320f809 jalr t9 | |
| 1083 84: 00000000 nop | |
| 1084 88: 8fdc0010 lw gp,16(s8) | |
| 1085 8c: 02001021 move v0,s0 | |
| 1086 90: 27c30018 addiu v1,s8,24 | |
| 1087 94: 24060028 li a2,40 | |
| 1088 98: 00402021 move a0,v0 | |
| 1089 9c: 00602821 move a1,v1 | |
| 1090 a0: 8f990000 lw t9,0(gp) | |
| 1091 a4: 0320f809 jalr t9 | |
| 1092 a8: 00000000 nop | |
| 1093 ac: 8fdc0010 lw gp,16(s8) | |
| 1094 b0: 02001021 move v0,s0 | |
| 1095 b4: 03c0e821 move sp,s8 | |
| 1096 b8: 8fbf0048 lw ra,72(sp) | |
| 1097 bc: 8fbe0044 lw s8,68(sp) | |
| 1098 c0: 8fb00040 lw s0,64(sp) | |
| 1099 c4: 03e00008 jr ra | |
| 1100 c8: 27bd0050 addiu sp,sp,80 | |
| 1101 | |
| 1102 000000cc <main>: | |
| 1103 cc: 3c1c0000 lui gp,0x0 | |
| 1104 d0: 279c0000 addiu gp,gp,0 | |
| 1105 d4: 0399e021 addu gp,gp,t9 | |
| 1106 d8: 27bdffb0 addiu sp,sp,-80 | |
| 1107 dc: afbf004c sw ra,76(sp) | |
| 1108 e0: afbe0048 sw s8,72(sp) | |
| 1109 e4: 03a0f021 move s8,sp | |
| 1110 e8: afbc0010 sw gp,16(sp) | |
| 1111 ec: 27c20018 addiu v0,s8,24 | |
| 1112 f0: 00402021 move a0,v0 | |
| 1113 f4: 8f990000 lw t9,0(gp) | |
| 1114 f8: 0320f809 jalr t9 | |
| 1115 fc: 00000000 nop | |
| 1116 100: 8fdc0010 lw gp,16(s8) | |
| 1117 104: 27c20020 addiu v0,s8,32 | |
| 1118 108: 00402021 move a0,v0 | |
| 1119 10c: 8f990000 lw t9,0(gp) | |
| 1120 110: 0320f809 jalr t9 | |
| 1121 114: 00000000 nop | |
| 1122 118: 8fdc0010 lw gp,16(s8) | |
| 1123 11c: 8fc3002c lw v1,44(s8) | |
| 1124 120: 8fc20028 lw v0,40(s8) | |
| 1125 124: 00602021 move a0,v1 | |
| 1126 128: 8fc30034 lw v1,52(s8) | |
| 1127 12c: 8fc20030 lw v0,48(s8) | |
| 1128 130: 00601021 move v0,v1 | |
| 1129 134: 00821821 addu v1,a0,v0 | |
| 1130 138: 8fc20040 lw v0,64(s8) | |
| 1131 13c: 00621821 addu v1,v1,v0 | |
| 1132 140: 83c20018 lb v0,24(s8) | |
| 1133 144: 00621021 addu v0,v1,v0 | |
| 1134 148: 03c0e821 move sp,s8 | |
| 1135 14c: 8fbf004c lw ra,76(sp) | |
| 1136 150: 8fbe0048 lw s8,72(sp) | |
| 1137 154: 03e00008 jr ra | |
| 1138 158: 27bd0050 addiu sp,sp,80 | |
| 1139 15c: 00000000 nop | |
| 1140 | |
| 1141 | |
| 1142 | |
| 1143 ; ---------- returning long long ----------> | |
| 1144 ; | |
| 1145 ; long long f() | |
| 1146 ; { | |
| 1147 ; return 7171LL; | |
| 1148 ; } | |
| 1149 ; | |
| 1150 ; int main() | |
| 1151 ; { | |
| 1152 ; return (int)f(); | |
| 1153 ; } | |
| 1154 | |
| 1155 | |
| 1156 | |
| 1157 ; output from freebsd-12.0_r333647-malta_mipsebhf w/ gcc 4.2.1 -----> | |
| 1158 | |
| 1159 00000000 <f>: | |
| 1160 0: 3c1c0000 lui gp,0x0 ; | |
| 1161 4: 279c0000 addiu gp,gp,0 ; | |
| 1162 8: 0399e021 addu gp,gp,t9 ; | |
| 1163 c: 27bdfff8 addiu sp,sp,-8 ; | |
| 1164 10: afbe0000 sw s8,0(sp) ; | |
| 1165 14: 03a0f021 move s8,sp ; | |
| 1166 18: 24031c03 li v1,7171 ; | return value | |
| 1167 1c: 00001021 move v0,zero ; | | |
| 1168 20: 03c0e821 move sp,s8 ; | |
| 1169 24: 8fbe0000 lw s8,0(sp) ; | |
| 1170 28: 03e00008 jr ra ; | |
| 1171 2c: 27bd0008 addiu sp,sp,8 ; | |
| 1172 | |
| 1173 00000030 <main>: | |
| 1174 30: 3c1c0000 lui gp,0x0 | |
| 1175 34: 279c0000 addiu gp,gp,0 | |
| 1176 38: 0399e021 addu gp,gp,t9 | |
| 1177 3c: 27bdffe0 addiu sp,sp,-32 | |
| 1178 40: afbf001c sw ra,28(sp) | |
| 1179 44: afbe0018 sw s8,24(sp) | |
| 1180 48: 03a0f021 move s8,sp | |
| 1181 4c: afbc0010 sw gp,16(sp) | |
| 1182 50: 8f990000 lw t9,0(gp) | |
| 1183 54: 0320f809 jalr t9 | |
| 1184 58: 00000000 nop | |
| 1185 5c: 8fdc0010 lw gp,16(s8) | |
| 1186 60: 00601021 move v0,v1 | |
| 1187 64: 03c0e821 move sp,s8 | |
| 1188 68: 8fbf001c lw ra,28(sp) | |
| 1189 6c: 8fbe0018 lw s8,24(sp) | |
| 1190 70: 03e00008 jr ra | |
| 1191 74: 27bd0020 addiu sp,sp,32 | |
| 1192 ... | |
| 1193 | |
| 1194 | |
| 1195 | |
| 1196 ; output from freebsd-12.0_r333647-malta_mipsebhf w/ gcc 4.2.1 *and* -mhard-float -----> | |
| 1197 | |
| 1198 00000000 <f>: | |
| 1199 0: 3c1c0000 lui gp,0x0 ; | |
| 1200 4: 279c0000 addiu gp,gp,0 ; | |
| 1201 8: 0399e021 addu gp,gp,t9 ; | |
| 1202 c: 27bdfff8 addiu sp,sp,-8 ; | |
| 1203 10: afbe0000 sw s8,0(sp) ; | |
| 1204 14: 03a0f021 move s8,sp ; | |
| 1205 18: 24031c03 li v1,7171 ; | return value | |
| 1206 1c: 00001021 move v0,zero ; | | |
| 1207 20: 03c0e821 move sp,s8 ; | |
| 1208 24: 8fbe0000 lw s8,0(sp) ; | |
| 1209 28: 03e00008 jr ra ; | |
| 1210 2c: 27bd0008 addiu sp,sp,8 ; | |
| 1211 | |
| 1212 00000030 <main>: | |
| 1213 30: 3c1c0000 lui gp,0x0 | |
| 1214 34: 279c0000 addiu gp,gp,0 | |
| 1215 38: 0399e021 addu gp,gp,t9 | |
| 1216 3c: 27bdffe0 addiu sp,sp,-32 | |
| 1217 40: afbf001c sw ra,28(sp) | |
| 1218 44: afbe0018 sw s8,24(sp) | |
| 1219 48: 03a0f021 move s8,sp | |
| 1220 4c: afbc0010 sw gp,16(sp) | |
| 1221 50: 8f990000 lw t9,0(gp) | |
| 1222 54: 0320f809 jalr t9 | |
| 1223 58: 00000000 nop | |
| 1224 5c: 8fdc0010 lw gp,16(s8) | |
| 1225 60: 00601021 move v0,v1 | |
| 1226 64: 03c0e821 move sp,s8 | |
| 1227 68: 8fbf001c lw ra,28(sp) | |
| 1228 6c: 8fbe0018 lw s8,24(sp) | |
| 1229 70: 03e00008 jr ra | |
| 1230 74: 27bd0020 addiu sp,sp,32 | |
| 1231 ... | |
| 1232 | |
| 1233 | |
| 1234 | |
| 1235 ; ---------- passing structs with only fp parts ----------> | |
| 1236 ; | |
| 1237 ; struct A { float a; }; | |
| 1238 ; struct B { float a, b; }; | |
| 1239 ; struct C { float a, b, c; }; | |
| 1240 ; struct D { double a; }; | |
| 1241 ; struct E { double a, b; }; | |
| 1242 ; struct F { double a, b, c; }; | |
| 1243 ; | |
| 1244 ; void leaf_call(struct A a, struct B b, struct C c, struct D d, struct E e, struct F f) | |
| 1245 ; { | |
| 1246 ; } | |
| 1247 ; | |
| 1248 ; int main() | |
| 1249 ; { | |
| 1250 ; leaf_call((struct A){1.f}, (struct B){2.f,3.f}, (struct C){4.f,5.f,6.f}, (struct D){1.}, (struct E){2.,3.}, (struct F){4.,5.,6.}); | |
| 1251 ; return 0; | |
| 1252 ; } | |
| 1253 | |
| 1254 | |
| 1255 | |
| 1256 ; output from freebsd-12.0_r333647-malta_mipsebhf w/ gcc 4.2.1 -----> | |
| 1257 | |
| 1258 00000000 <leaf_call>: | |
| 1259 0: 3c1c0000 lui gp,0x0 | |
| 1260 4: 279c0000 addiu gp,gp,0 | |
| 1261 8: 0399e021 addu gp,gp,t9 | |
| 1262 c: 27bdfff8 addiu sp,sp,-8 | |
| 1263 10: afbe0000 sw s8,0(sp) | |
| 1264 14: 03a0f021 move s8,sp | |
| 1265 18: afc40008 sw a0,8(s8) | |
| 1266 1c: afc5000c sw a1,12(s8) | |
| 1267 20: afc60010 sw a2,16(s8) | |
| 1268 24: afc70014 sw a3,20(s8) | |
| 1269 28: 03c0e821 move sp,s8 | |
| 1270 2c: 8fbe0000 lw s8,0(sp) | |
| 1271 30: 03e00008 jr ra | |
| 1272 34: 27bd0008 addiu sp,sp,8 | |
| 1273 | |
| 1274 00000038 <main>: | |
| 1275 38: 3c1c0000 lui gp,0x0 ; | | |
| 1276 3c: 279c0000 addiu gp,gp,0 ; | | |
| 1277 40: 0399e021 addu gp,gp,t9 ; | | |
| 1278 44: 27bdff60 addiu sp,sp,-160 ; | prolog | |
| 1279 48: afbf009c sw ra,156(sp) ; | | |
| 1280 4c: afbe0098 sw s8,152(sp) ; | | |
| 1281 50: 03a0f021 move s8,sp ; | frame pointer (note: with offset to frame start, but static compared to sp) | |
| 1282 54: afbc0048 sw gp,72(sp) ; / | |
| 1283 58: 8f820000 lw v0,0(gp) ; \ | |
| 1284 5c: 24420044 addiu v0,v0,68 ; | prep local struct A data ... | |
| 1285 60: 8c420000 lw v0,0(v0) ; / | |
| 1286 64: afc20094 sw v0,148(s8) ; ... and write to local area | |
| 1287 68: 8f820000 lw v0,0(gp) ; \ | |
| 1288 6c: 2442003c addiu v0,v0,60 ; | | |
| 1289 70: 8c420000 lw v0,0(v0) ; | | |
| 1290 74: 8f830000 lw v1,0(gp) ; | prep local struct B data ... | |
| 1291 78: 2463003c addiu v1,v1,60 ; | | |
| 1292 7c: 8c630004 lw v1,4(v1) ; / | |
| 1293 80: afc2008c sw v0,140(s8) ; \ ... and write to local area a | |
| 1294 84: afc30090 sw v1,144(s8) ; / b | |
| 1295 88: 8f820000 lw v0,0(gp) ; \ | |
| 1296 8c: 24420030 addiu v0,v0,48 ; | | |
| 1297 90: 8c420000 lw v0,0(v0) ; | | |
| 1298 94: 8f830000 lw v1,0(gp) ; | | |
| 1299 98: 24630030 addiu v1,v1,48 ; | prep local struct C data ... | |
| 1300 9c: 8c630004 lw v1,4(v1) ; | | |
| 1301 a0: 8f840000 lw a0,0(gp) ; | | |
| 1302 a4: 24840030 addiu a0,a0,48 ; | | |
| 1303 a8: 8c840008 lw a0,8(a0) ; / | |
| 1304 ac: afc20080 sw v0,128(s8) ; \ a | |
| 1305 b0: afc30084 sw v1,132(s8) ; | ... and write to local area b | |
| 1306 b4: afc40088 sw a0,136(s8) ; / c | |
| 1307 b8: 8f830000 lw v1,0(gp) ; \ | |
| 1308 bc: 24630028 addiu v1,v1,40 ; | | |
| 1309 c0: 8c630004 lw v1,4(v1) ; | | |
| 1310 c4: 8f820000 lw v0,0(gp) ; | prep local struct D data ... | |
| 1311 c8: 24420028 addiu v0,v0,40 ; | | |
| 1312 cc: 8c420000 lw v0,0(v0) ; / | |
| 1313 d0: afc3007c sw v1,124(s8) ; \ ... and write to local area | |
| 1314 d4: afc20078 sw v0,120(s8) ; / | |
| 1315 d8: 8f820000 lw v0,0(gp) ; \ | |
| 1316 dc: 24420018 addiu v0,v0,24 ; | | |
| 1317 e0: 8c420000 lw v0,0(v0) ; | | |
| 1318 e4: 8f830000 lw v1,0(gp) ; | | |
| 1319 e8: 24630018 addiu v1,v1,24 ; | | |
| 1320 ec: 8c630004 lw v1,4(v1) ; | prep local struct E data ... | |
| 1321 f0: 8f840000 lw a0,0(gp) ; | | |
| 1322 f4: 24840018 addiu a0,a0,24 ; | | |
| 1323 f8: 8c840008 lw a0,8(a0) ; | | |
| 1324 fc: 8f850000 lw a1,0(gp) ; | | |
| 1325 100: 24a50018 addiu a1,a1,24 ; | | |
| 1326 104: 8ca5000c lw a1,12(a1) ; / | |
| 1327 108: afc20068 sw v0,104(s8) ; \ | a | |
| 1328 10c: afc3006c sw v1,108(s8) ; | ... and write to local area / | |
| 1329 110: afc40070 sw a0,112(s8) ; | \ | |
| 1330 114: afc50074 sw a1,116(s8) ; / | b | |
| 1331 118: 8f820000 lw v0,0(gp) ; \ | |
| 1332 11c: 24420000 addiu v0,v0,0 ; | | |
| 1333 120: 8c420000 lw v0,0(v0) ; | | |
| 1334 124: 8f830000 lw v1,0(gp) ; | | |
| 1335 128: 24630000 addiu v1,v1,0 ; | | |
| 1336 12c: 8c630004 lw v1,4(v1) ; | | |
| 1337 130: 8f840000 lw a0,0(gp) ; | | |
| 1338 134: 24840000 addiu a0,a0,0 ; | | |
| 1339 138: 8c840008 lw a0,8(a0) ; | | |
| 1340 13c: 8f850000 lw a1,0(gp) ; | prep local struct F data ... | |
| 1341 140: 24a50000 addiu a1,a1,0 ; | | |
| 1342 144: 8ca5000c lw a1,12(a1) ; | | |
| 1343 148: 8f860000 lw a2,0(gp) ; | | |
| 1344 14c: 24c60000 addiu a2,a2,0 ; | | |
| 1345 150: 8cc60010 lw a2,16(a2) ; | | |
| 1346 154: 8f870000 lw a3,0(gp) ; | | |
| 1347 158: 24e70000 addiu a3,a3,0 ; | | |
| 1348 15c: 8ce70014 lw a3,20(a3) ; / | |
| 1349 160: afc20050 sw v0,80(s8) ; \ | a | |
| 1350 164: afc30054 sw v1,84(s8) ; | / | |
| 1351 168: afc40058 sw a0,88(s8) ; | \ b | |
| 1352 16c: afc5005c sw a1,92(s8) ; | ... and write to local area / | |
| 1353 170: afc60060 sw a2,96(s8) ; | \ | |
| 1354 174: afc70064 sw a3,100(s8) ; / | c | |
| 1355 178: 8fc3007c lw v1,124(s8) ; \ | |
| 1356 17c: 8fc20078 lw v0,120(s8) ; | | |
| 1357 180: afa3001c sw v1,28(sp) ; | arg 3 (struct D) | |
| 1358 184: afa20018 sw v0,24(sp) ; / | |
| 1359 188: 8fc20068 lw v0,104(s8) ; \ | |
| 1360 18c: 8fc3006c lw v1,108(s8) ; | | |
| 1361 190: 8fc40070 lw a0,112(s8) ; | | |
| 1362 194: 8fc50074 lw a1,116(s8) ; | | |
| 1363 198: afa20020 sw v0,32(sp) ; | arg 4 (struct E) | |
| 1364 19c: afa30024 sw v1,36(sp) ; | | |
| 1365 1a0: afa40028 sw a0,40(sp) ; | | |
| 1366 1a4: afa5002c sw a1,44(sp) ; / | |
| 1367 1a8: 8fc20050 lw v0,80(s8) ; \ | |
| 1368 1ac: 8fc30054 lw v1,84(s8) ; | | |
| 1369 1b0: 8fc40058 lw a0,88(s8) ; | | |
| 1370 1b4: 8fc5005c lw a1,92(s8) ; | | |
| 1371 1b8: 8fc60060 lw a2,96(s8) ; | | |
| 1372 1bc: 8fc70064 lw a3,100(s8) ; | | |
| 1373 1c0: afa20030 sw v0,48(sp) ; | arg 5 (struct F) | |
| 1374 1c4: afa30034 sw v1,52(sp) ; | | |
| 1375 1c8: afa40038 sw a0,56(sp) ; | | |
| 1376 1cc: afa5003c sw a1,60(sp) ; | | |
| 1377 1d0: afa60040 sw a2,64(sp) ; | | |
| 1378 1d4: afa70044 sw a3,68(sp) ; / | |
| 1379 1d8: 8fc20084 lw v0,132(s8) ; \ | |
| 1380 1dc: 8fc30088 lw v1,136(s8) ; | | |
| 1381 1e0: afa20010 sw v0,16(sp) ; | arg 2 (struct C) b (via stack) | |
| 1382 1e4: afa30014 sw v1,20(sp) ; | c (via stack) | |
| 1383 1e8: 8fc70080 lw a3,128(s8) ; | a (via reg) | |
| 1384 1ec: 8fc40094 lw a0,148(s8) ; arg 0 (struct A, via reg) | |
| 1385 1f0: 8fc5008c lw a1,140(s8) ; | arg 1 (struct B, via regs) a | |
| 1386 1f4: 8fc60090 lw a2,144(s8) ; | b | |
| 1387 1f8: 8f990000 lw t9,0(gp) ; func to call -> t9 | |
| 1388 1fc: 0320f809 jalr t9 ; call and ret addr -> ra | |
| 1389 200: 00000000 nop ; branch delay slot | |
| 1390 204: 8fdc0048 lw gp,72(s8) ; | | |
| 1391 208: 00001021 move v0,zero ; : return value: not part of epilog, but unordered (branch delay slot style) | |
| 1392 20c: 03c0e821 move sp,s8 ; | | |
| 1393 210: 8fbf009c lw ra,156(sp) ; | epilog | |
| 1394 214: 8fbe0098 lw s8,152(sp) ; | | |
| 1395 218: 03e00008 jr ra ; | | |
| 1396 21c: 27bd00a0 addiu sp,sp,160 ; | | |
| 1397 | |
| 1398 | |
| 1399 | |
| 1400 ; output from freebsd-12.0_r333647-malta_mipsebhf w/ gcc 4.2.1 *and* -mhard-float -----> | |
| 1401 | |
| 1402 00000000 <leaf_call>: | |
| 1403 0: 3c1c0000 lui gp,0x0 | |
| 1404 4: 279c0000 addiu gp,gp,0 | |
| 1405 8: 0399e021 addu gp,gp,t9 | |
| 1406 c: 27bdfff8 addiu sp,sp,-8 | |
| 1407 10: afbe0000 sw s8,0(sp) | |
| 1408 14: 03a0f021 move s8,sp | |
| 1409 18: afc40008 sw a0,8(s8) | |
| 1410 1c: afc5000c sw a1,12(s8) | |
| 1411 20: afc60010 sw a2,16(s8) | |
| 1412 24: afc70014 sw a3,20(s8) | |
| 1413 28: 03c0e821 move sp,s8 | |
| 1414 2c: 8fbe0000 lw s8,0(sp) | |
| 1415 30: 03e00008 jr ra | |
| 1416 34: 27bd0008 addiu sp,sp,8 | |
| 1417 | |
| 1418 00000038 <main>: | |
| 1419 38: 3c1c0000 lui gp,0x0 ; | | |
| 1420 3c: 279c0000 addiu gp,gp,0 ; | | |
| 1421 40: 0399e021 addu gp,gp,t9 ; | | |
| 1422 44: 27bdff60 addiu sp,sp,-160 ; | prolog | |
| 1423 48: afbf009c sw ra,156(sp) ; | | |
| 1424 4c: afbe0098 sw s8,152(sp) ; | | |
| 1425 50: 03a0f021 move s8,sp ; | frame pointer (note: with offset to frame start, but static compared to sp) | |
| 1426 54: afbc0048 sw gp,72(sp) ; / | |
| 1427 58: 8f810000 lw at,0(gp) ; \ | |
| 1428 5c: 24210044 addiu at,at,68 ; | prep local struct A (single float field) data ... | |
| 1429 60: c4200000 lwc1 $f0,0(at) ; / | |
| 1430 64: e7c00094 swc1 $f0,148(s8) ; ... and write to local area | |
| 1431 68: 8f820000 lw v0,0(gp) ; \ | |
| 1432 6c: 2442003c addiu v0,v0,60 ; | | |
| 1433 70: 8c420000 lw v0,0(v0) ; | | |
| 1434 74: 8f830000 lw v1,0(gp) ; | prep local struct B data ... | |
| 1435 78: 2463003c addiu v1,v1,60 ; | | |
| 1436 7c: 8c630004 lw v1,4(v1) ; / | |
| 1437 80: afc2008c sw v0,140(s8) ; \ ... and write to local area a | |
| 1438 84: afc30090 sw v1,144(s8) ; / b | |
| 1439 88: 8f820000 lw v0,0(gp) ; \ | |
| 1440 8c: 24420030 addiu v0,v0,48 ; | | |
| 1441 90: 8c420000 lw v0,0(v0) ; | | |
| 1442 94: 8f830000 lw v1,0(gp) ; | | |
| 1443 98: 24630030 addiu v1,v1,48 ; | prep local struct C data ... | |
| 1444 9c: 8c630004 lw v1,4(v1) ; | | |
| 1445 a0: 8f840000 lw a0,0(gp) ; | | |
| 1446 a4: 24840030 addiu a0,a0,48 ; | | |
| 1447 a8: 8c840008 lw a0,8(a0) ; / | |
| 1448 ac: afc20080 sw v0,128(s8) ; \ a | |
| 1449 b0: afc30084 sw v1,132(s8) ; | ... and write to local area b | |
| 1450 b4: afc40088 sw a0,136(s8) ; / c | |
| 1451 b8: 8f810000 lw at,0(gp) ; \ | |
| 1452 bc: 24210028 addiu at,at,40 ; | prep local struct D (single double field) data ... | |
| 1453 c0: d4200000 ldc1 $f0,0(at) ; / | |
| 1454 c4: f7c00078 sdc1 $f0,120(s8) ; ... and write to local area | |
| 1455 c8: 8f820000 lw v0,0(gp) ; \ | |
| 1456 cc: 24420018 addiu v0,v0,24 ; | | |
| 1457 d0: 8c420000 lw v0,0(v0) ; | | |
| 1458 d4: 8f830000 lw v1,0(gp) ; | | |
| 1459 d8: 24630018 addiu v1,v1,24 ; | | |
| 1460 dc: 8c630004 lw v1,4(v1) ; | prep local struct E data ... | |
| 1461 e0: 8f840000 lw a0,0(gp) ; | | |
| 1462 e4: 24840018 addiu a0,a0,24 ; | | |
| 1463 e8: 8c840008 lw a0,8(a0) ; | | |
| 1464 ec: 8f850000 lw a1,0(gp) ; | | |
| 1465 f0: 24a50018 addiu a1,a1,24 ; | | |
| 1466 f4: 8ca5000c lw a1,12(a1) ; / | |
| 1467 f8: afc20068 sw v0,104(s8) ; \ | a | |
| 1468 fc: afc3006c sw v1,108(s8) ; | ... and write to local area / | |
| 1469 100: afc40070 sw a0,112(s8) ; | \ | |
| 1470 104: afc50074 sw a1,116(s8) ; / | b | |
| 1471 108: 8f820000 lw v0,0(gp) ; \ | |
| 1472 10c: 24420000 addiu v0,v0,0 ; | | |
| 1473 110: 8c420000 lw v0,0(v0) ; | | |
| 1474 114: 8f830000 lw v1,0(gp) ; | | |
| 1475 118: 24630000 addiu v1,v1,0 ; | | |
| 1476 11c: 8c630004 lw v1,4(v1) ; | | |
| 1477 120: 8f840000 lw a0,0(gp) ; | | |
| 1478 124: 24840000 addiu a0,a0,0 ; | | |
| 1479 128: 8c840008 lw a0,8(a0) ; | | |
| 1480 12c: 8f850000 lw a1,0(gp) ; | prep local struct F data ... | |
| 1481 130: 24a50000 addiu a1,a1,0 ; | | |
| 1482 134: 8ca5000c lw a1,12(a1) ; | | |
| 1483 138: 8f860000 lw a2,0(gp) ; | | |
| 1484 13c: 24c60000 addiu a2,a2,0 ; | | |
| 1485 140: 8cc60010 lw a2,16(a2) ; | | |
| 1486 144: 8f870000 lw a3,0(gp) ; | | |
| 1487 148: 24e70000 addiu a3,a3,0 ; | | |
| 1488 14c: 8ce70014 lw a3,20(a3) ; / | |
| 1489 150: afc20050 sw v0,80(s8) ; \ | a | |
| 1490 154: afc30054 sw v1,84(s8) ; | / | |
| 1491 158: afc40058 sw a0,88(s8) ; | \ b | |
| 1492 15c: afc5005c sw a1,92(s8) ; | ... and write to local area / | |
| 1493 160: afc60060 sw a2,96(s8) ; | \ | |
| 1494 164: afc70064 sw a3,100(s8) ; / | c | |
| 1495 168: d7c00078 ldc1 $f0,120(s8) ; \ | |
| 1496 16c: f7a00018 sdc1 $f0,24(sp) ; / arg 3 (struct D) | |
| 1497 170: 8fc20068 lw v0,104(s8) ; \ | |
| 1498 174: 8fc3006c lw v1,108(s8) ; | | |
| 1499 178: 8fc40070 lw a0,112(s8) ; | | |
| 1500 17c: 8fc50074 lw a1,116(s8) ; | | |
| 1501 180: afa20020 sw v0,32(sp) ; | arg 4 (struct E) | |
| 1502 184: afa30024 sw v1,36(sp) ; | | |
| 1503 188: afa40028 sw a0,40(sp) ; | | |
| 1504 18c: afa5002c sw a1,44(sp) ; / | |
| 1505 190: 8fc20050 lw v0,80(s8) ; \ | |
| 1506 194: 8fc30054 lw v1,84(s8) ; | | |
| 1507 198: 8fc40058 lw a0,88(s8) ; | | |
| 1508 19c: 8fc5005c lw a1,92(s8) ; | | |
| 1509 1a0: 8fc60060 lw a2,96(s8) ; | | |
| 1510 1a4: 8fc70064 lw a3,100(s8) ; | | |
| 1511 1a8: afa20030 sw v0,48(sp) ; | arg 5 (struct F) | |
| 1512 1ac: afa30034 sw v1,52(sp) ; | | |
| 1513 1b0: afa40038 sw a0,56(sp) ; | | |
| 1514 1b4: afa5003c sw a1,60(sp) ; | | |
| 1515 1b8: afa60040 sw a2,64(sp) ; | | |
| 1516 1bc: afa70044 sw a3,68(sp) ; / | |
| 1517 1c0: 8fc20084 lw v0,132(s8) ; \ | |
| 1518 1c4: 8fc30088 lw v1,136(s8) ; | | |
| 1519 1c8: afa20010 sw v0,16(sp) ; | arg 2 (struct C) b (via stack) | |
| 1520 1cc: afa30014 sw v1,20(sp) ; | c (via stack) | |
| 1521 1d0: 8fc70080 lw a3,128(s8) ; | a (via reg) | |
| 1522 1d4: 8fc40094 lw a0,148(s8) ; arg 0 (struct A, via reg) | |
| 1523 1d8: 8fc5008c lw a1,140(s8) ; | arg 1 (struct B, via regs) a | |
| 1524 1dc: 8fc60090 lw a2,144(s8) ; | b | |
| 1525 1e0: 8f990000 lw t9,0(gp) ; func to call -> t9 | |
| 1526 1e4: 0320f809 jalr t9 ; call and ret addr -> ra | |
| 1527 1e8: 00000000 nop ; branch delay slot | |
| 1528 1ec: 8fdc0048 lw gp,72(s8) ; | | |
| 1529 1f0: 00001021 move v0,zero ; : return value: not part of epilog, but unordered (branch delay slot style) | |
| 1530 1f4: 03c0e821 move sp,s8 ; | | |
| 1531 1f8: 8fbf009c lw ra,156(sp) ; | epilog | |
| 1532 1fc: 8fbe0098 lw s8,152(sp) ; | | |
| 1533 200: 03e00008 jr ra ; | | |
| 1534 204: 27bd00a0 addiu sp,sp,160 ; | | |
| 1535 ... | |
| 1536 | |
| 1537 | |
| 1538 | |
| 1539 ; ---------- single-field structs by values (and small array fields) ----------> | |
| 1540 ; | |
| 1541 ; struct C { char c; }; | |
| 1542 ; struct S { short s; }; | |
| 1543 ; struct I { int i; }; | |
| 1544 ; struct F { float f; }; | |
| 1545 ; struct D { double d; }; | |
| 1546 ; | |
| 1547 ; struct C2 { char c[2]; }; | |
| 1548 ; struct C3 { char c[3]; }; | |
| 1549 ; | |
| 1550 ; void leaf_call(struct C2 a, struct C b, struct S c, struct I d, struct F e, struct D f, struct C3 g) | |
| 1551 ; { | |
| 1552 ; } | |
| 1553 ; | |
| 1554 ; int main() | |
| 1555 ; { | |
| 1556 ; leaf_call((struct C2){{0,1}}, (struct C){2}, (struct S){3}, (struct I){4}, (struct F){5.f}, (struct D){6.}, (struct C3){{7,8,9}}); | |
| 1557 ; return 0; | |
| 1558 ; } | |
| 1559 | |
| 1560 | |
| 1561 | |
| 1562 ; output from freebsd-12.0_r333647-malta_mipsebhf w/ gcc 4.2.1 -----> | |
| 1563 | |
| 1564 00000000 <leaf_call>: | |
| 1565 0: 3c1c0000 lui gp,0x0 | |
| 1566 4: 279c0000 addiu gp,gp,0 | |
| 1567 8: 0399e021 addu gp,gp,t9 | |
| 1568 c: 27bdfff8 addiu sp,sp,-8 | |
| 1569 10: afbe0000 sw s8,0(sp) | |
| 1570 14: 03a0f021 move s8,sp | |
| 1571 18: afc40008 sw a0,8(s8) | |
| 1572 1c: afc5000c sw a1,12(s8) | |
| 1573 20: afc60010 sw a2,16(s8) | |
| 1574 24: afc70014 sw a3,20(s8) | |
| 1575 28: 03c0e821 move sp,s8 | |
| 1576 2c: 8fbe0000 lw s8,0(sp) | |
| 1577 30: 03e00008 jr ra | |
| 1578 34: 27bd0008 addiu sp,sp,8 | |
| 1579 | |
| 1580 00000038 <main>: | |
| 1581 38: 3c1c0000 lui gp,0x0 | |
| 1582 3c: 279c0000 addiu gp,gp,0 | |
| 1583 40: 0399e021 addu gp,gp,t9 | |
| 1584 44: 27bdffa0 addiu sp,sp,-96 | |
| 1585 48: afbf005c sw ra,92(sp) | |
| 1586 4c: afbe0058 sw s8,88(sp) | |
| 1587 50: 03a0f021 move s8,sp | |
| 1588 54: afbc0028 sw gp,40(sp) | |
| 1589 58: 8f820000 lw v0,0(gp) | |
| 1590 5c: 24420010 addiu v0,v0,16 | |
| 1591 60: 90420000 lbu v0,0(v0) | |
| 1592 64: a3c2004b sb v0,75(s8) | |
| 1593 68: 8f820000 lw v0,0(gp) | |
| 1594 6c: 24420010 addiu v0,v0,16 | |
| 1595 70: 90420001 lbu v0,1(v0) | |
| 1596 74: a3c2004c sb v0,76(s8) | |
| 1597 78: 24020002 li v0,2 | |
| 1598 7c: a3c2004a sb v0,74(s8) | |
| 1599 80: 24020003 li v0,3 | |
| 1600 84: a7c20048 sh v0,72(s8) | |
| 1601 88: 24020004 li v0,4 | |
| 1602 8c: afc20044 sw v0,68(s8) | |
| 1603 90: 8f820000 lw v0,0(gp) | |
| 1604 94: 24420014 addiu v0,v0,20 | |
| 1605 98: 8c420000 lw v0,0(v0) | |
| 1606 9c: afc20040 sw v0,64(s8) | |
| 1607 a0: 8f830000 lw v1,0(gp) | |
| 1608 a4: 24630008 addiu v1,v1,8 | |
| 1609 a8: 8c630004 lw v1,4(v1) | |
| 1610 ac: 8f820000 lw v0,0(gp) | |
| 1611 b0: 24420008 addiu v0,v0,8 | |
| 1612 b4: 8c420000 lw v0,0(v0) | |
| 1613 b8: afc3003c sw v1,60(s8) | |
| 1614 bc: afc20038 sw v0,56(s8) | |
| 1615 c0: 8f820000 lw v0,0(gp) | |
| 1616 c4: 24420000 addiu v0,v0,0 | |
| 1617 c8: 94420000 lhu v0,0(v0) | |
| 1618 cc: a7c20030 sh v0,48(s8) | |
| 1619 d0: 8f820000 lw v0,0(gp) | |
| 1620 d4: 24420000 addiu v0,v0,0 | |
| 1621 d8: 90420002 lbu v0,2(v0) | |
| 1622 dc: a3c20032 sb v0,50(s8) | |
| 1623 e0: 8fc20040 lw v0,64(s8) | |
| 1624 e4: afa20010 sw v0,16(sp) | |
| 1625 e8: 8fc3003c lw v1,60(s8) | |
| 1626 ec: 8fc20038 lw v0,56(s8) | |
| 1627 f0: afa3001c sw v1,28(sp) | |
| 1628 f4: afa20018 sw v0,24(sp) | |
| 1629 f8: 97c20030 lhu v0,48(s8) | |
| 1630 fc: a7a20020 sh v0,32(sp) | |
| 1631 100: 93c20032 lbu v0,50(s8) | |
| 1632 104: a3a20022 sb v0,34(sp) | |
| 1633 108: 93c2004b lbu v0,75(s8) | |
| 1634 10c: 00021a00 sll v1,v0,0x8 | |
| 1635 110: 93c2004c lbu v0,76(s8) | |
| 1636 114: 00431025 or v0,v0,v1 | |
| 1637 118: afc00050 sw zero,80(s8) | |
| 1638 11c: 00021c00 sll v1,v0,0x10 | |
| 1639 120: 8fc40050 lw a0,80(s8) | |
| 1640 124: 3082ffff andi v0,a0,0xffff | |
| 1641 128: 00431025 or v0,v0,v1 | |
| 1642 12c: afc20050 sw v0,80(s8) | |
| 1643 130: 8fc40050 lw a0,80(s8) | |
| 1644 134: 93c5004a lbu a1,74(s8) | |
| 1645 138: 00052e00 sll a1,a1,0x18 | |
| 1646 13c: 97c60048 lhu a2,72(s8) | |
| 1647 140: 00063400 sll a2,a2,0x10 | |
| 1648 144: 8fc70044 lw a3,68(s8) | |
| 1649 148: 8f990000 lw t9,0(gp) | |
| 1650 14c: 0320f809 jalr t9 | |
| 1651 150: 00000000 nop | |
| 1652 154: 8fdc0028 lw gp,40(s8) | |
| 1653 158: 00001021 move v0,zero | |
| 1654 15c: 03c0e821 move sp,s8 | |
| 1655 160: 8fbf005c lw ra,92(sp) | |
| 1656 164: 8fbe0058 lw s8,88(sp) | |
| 1657 168: 03e00008 jr ra | |
| 1658 16c: 27bd0060 addiu sp,sp,96 | |
| 1659 | |
| 1660 | |
| 1661 | |
| 1662 ; output from freebsd-12.0_r333647-malta_mipsebhf w/ gcc 4.2.1 *and* -mhard-float -----> | |
| 1663 | |
| 1664 00000000 <leaf_call>: | |
| 1665 0: 3c1c0000 lui gp,0x0 | |
| 1666 4: 279c0000 addiu gp,gp,0 | |
| 1667 8: 0399e021 addu gp,gp,t9 | |
| 1668 c: 27bdfff8 addiu sp,sp,-8 | |
| 1669 10: afbe0000 sw s8,0(sp) | |
| 1670 14: 03a0f021 move s8,sp | |
| 1671 18: afc40008 sw a0,8(s8) | |
| 1672 1c: afc5000c sw a1,12(s8) | |
| 1673 20: afc60010 sw a2,16(s8) | |
| 1674 24: afc70014 sw a3,20(s8) | |
| 1675 28: 03c0e821 move sp,s8 | |
| 1676 2c: 8fbe0000 lw s8,0(sp) | |
| 1677 30: 03e00008 jr ra | |
| 1678 34: 27bd0008 addiu sp,sp,8 | |
| 1679 | |
| 1680 00000038 <main>: | |
| 1681 38: 3c1c0000 lui gp,0x0 | |
| 1682 3c: 279c0000 addiu gp,gp,0 | |
| 1683 40: 0399e021 addu gp,gp,t9 | |
| 1684 44: 27bdffa0 addiu sp,sp,-96 | |
| 1685 48: afbf005c sw ra,92(sp) | |
| 1686 4c: afbe0058 sw s8,88(sp) | |
| 1687 50: 03a0f021 move s8,sp | |
| 1688 54: afbc0028 sw gp,40(sp) | |
| 1689 58: 8f820000 lw v0,0(gp) | |
| 1690 5c: 24420010 addiu v0,v0,16 | |
| 1691 60: 90420000 lbu v0,0(v0) | |
| 1692 64: a3c2004b sb v0,75(s8) | |
| 1693 68: 8f820000 lw v0,0(gp) | |
| 1694 6c: 24420010 addiu v0,v0,16 | |
| 1695 70: 90420001 lbu v0,1(v0) | |
| 1696 74: a3c2004c sb v0,76(s8) | |
| 1697 78: 24020002 li v0,2 | |
| 1698 7c: a3c2004a sb v0,74(s8) | |
| 1699 80: 24020003 li v0,3 | |
| 1700 84: a7c20048 sh v0,72(s8) | |
| 1701 88: 24020004 li v0,4 | |
| 1702 8c: afc20044 sw v0,68(s8) | |
| 1703 90: 8f810000 lw at,0(gp) | |
| 1704 94: 24210014 addiu at,at,20 | |
| 1705 98: c4200000 lwc1 $f0,0(at) | |
| 1706 9c: e7c00040 swc1 $f0,64(s8) | |
| 1707 a0: 8f810000 lw at,0(gp) | |
| 1708 a4: 24210008 addiu at,at,8 | |
| 1709 a8: d4200000 ldc1 $f0,0(at) | |
| 1710 ac: f7c00038 sdc1 $f0,56(s8) | |
| 1711 b0: 8f820000 lw v0,0(gp) | |
| 1712 b4: 24420000 addiu v0,v0,0 | |
| 1713 b8: 94420000 lhu v0,0(v0) | |
| 1714 bc: a7c20030 sh v0,48(s8) | |
| 1715 c0: 8f820000 lw v0,0(gp) | |
| 1716 c4: 24420000 addiu v0,v0,0 | |
| 1717 c8: 90420002 lbu v0,2(v0) | |
| 1718 cc: a3c20032 sb v0,50(s8) | |
| 1719 d0: c7c00040 lwc1 $f0,64(s8) | |
| 1720 d4: e7a00010 swc1 $f0,16(sp) | |
| 1721 d8: d7c00038 ldc1 $f0,56(s8) | |
| 1722 dc: f7a00018 sdc1 $f0,24(sp) | |
| 1723 e0: 97c20030 lhu v0,48(s8) | |
| 1724 e4: a7a20020 sh v0,32(sp) | |
| 1725 e8: 93c20032 lbu v0,50(s8) | |
| 1726 ec: a3a20022 sb v0,34(sp) | |
| 1727 f0: 93c2004b lbu v0,75(s8) | |
| 1728 f4: 00021a00 sll v1,v0,0x8 | |
| 1729 f8: 93c2004c lbu v0,76(s8) | |
| 1730 fc: 00431025 or v0,v0,v1 | |
| 1731 100: afc00050 sw zero,80(s8) | |
| 1732 104: 00021c00 sll v1,v0,0x10 | |
| 1733 108: 8fc40050 lw a0,80(s8) | |
| 1734 10c: 3082ffff andi v0,a0,0xffff | |
| 1735 110: 00431025 or v0,v0,v1 | |
| 1736 114: afc20050 sw v0,80(s8) | |
| 1737 118: 8fc40050 lw a0,80(s8) | |
| 1738 11c: 93c5004a lbu a1,74(s8) | |
| 1739 120: 00052e00 sll a1,a1,0x18 | |
| 1740 124: 97c60048 lhu a2,72(s8) | |
| 1741 128: 00063400 sll a2,a2,0x10 | |
| 1742 12c: 8fc70044 lw a3,68(s8) | |
| 1743 130: 8f990000 lw t9,0(gp) | |
| 1744 134: 0320f809 jalr t9 | |
| 1745 138: 00000000 nop | |
| 1746 13c: 8fdc0028 lw gp,40(s8) | |
| 1747 140: 00001021 move v0,zero | |
| 1748 144: 03c0e821 move sp,s8 | |
| 1749 148: 8fbf005c lw ra,92(sp) | |
| 1750 14c: 8fbe0058 lw s8,88(sp) | |
| 1751 150: 03e00008 jr ra | |
| 1752 154: 27bd0060 addiu sp,sp,96 | |
| 1753 ... | |
| 1754 | |
| 1755 | |
| 1756 | |
|
497
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1757 ; ---------- C++ trivial and non-trivial aggrs passed to C funcs ----------> |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1758 ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1759 ; struct Trivial { int a; }; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
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|
1760 ; struct NonTrivial { int a; NonTrivial() : a(0) {} NonTrivial(const NonTrivial& rhs) : a(rhs.a) { } }; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1761 ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1762 ; extern "C" { |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1763 ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
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|
1764 ; void f1(struct Trivial s) { } |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1765 ; void f2(struct NonTrivial s) { } |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1766 ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1767 ; void f() |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1768 ; { |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1769 ; struct Trivial t; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
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|
1770 ; struct NonTrivial n; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1771 ; int a=1; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1772 ; a += 123; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
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|
1773 ; f1(t); |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1774 ; a -= 123; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
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|
1775 ; f2(n); |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
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|
1776 ; a -= 12; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
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|
1777 ; } |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
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|
1778 ; } |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1779 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1780 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1781 |
|
498
fd9ba3a6d348
- corrections in tool usage in lastly added disas_examples
Tassilo Philipp
parents:
497
diff
changeset
|
1782 ; output from freebsd-12.0_r333647-malta_mipsebhf w/ gcc 4.2.1 |
|
497
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1783 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1784 004008c0 <f1>: |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1785 4008c0: 3c1c0002 lui gp,0x2 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1786 4008c4: 279c8330 addiu gp,gp,-31952 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1787 4008c8: 0399e021 addu gp,gp,t9 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1788 4008cc: 27bdfff8 addiu sp,sp,-8 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1789 4008d0: afbe0000 sw s8,0(sp) |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1790 4008d4: 03a0f021 move s8,sp |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1791 4008d8: afc40008 sw a0,8(s8) |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1792 4008dc: 03c0e821 move sp,s8 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1793 4008e0: 8fbe0000 lw s8,0(sp) |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1794 4008e4: 03e00008 jr ra |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1795 4008e8: 27bd0008 addiu sp,sp,8 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1796 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1797 004008ec <f2>: |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1798 4008ec: 3c1c0002 lui gp,0x2 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1799 4008f0: 279c8304 addiu gp,gp,-31996 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1800 4008f4: 0399e021 addu gp,gp,t9 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1801 4008f8: 27bdfff8 addiu sp,sp,-8 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1802 4008fc: afbe0000 sw s8,0(sp) |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1803 400900: 03a0f021 move s8,sp |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1804 400904: afc40008 sw a0,8(s8) |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1805 400908: 03c0e821 move sp,s8 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1806 40090c: 8fbe0000 lw s8,0(sp) |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1807 400910: 03e00008 jr ra |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1808 400914: 27bd0008 addiu sp,sp,8 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1809 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1810 00400918 <f>: |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1811 400918: 3c1c0002 lui gp,0x2 ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1812 40091c: 279c82d8 addiu gp,gp,-32040 ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1813 400920: 0399e021 addu gp,gp,t9 ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1814 400924: 27bdffd0 addiu sp,sp,-48 ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1815 400928: afbf002c sw ra,44(sp) ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1816 40092c: afbe0028 sw s8,40(sp) ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1817 400930: 03a0f021 move s8,sp ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1818 400934: afbc0010 sw gp,16(sp) ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1819 400938: 27c20024 addiu v0,s8,36 ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1820 40093c: 00402021 move a0,v0 ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1821 400940: 8f998064 lw t9,-32668(gp) ; | |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1822 400944: 0320f809 jalr t9 ; | NonTrivial::NonTrivial() / ctor |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1823 400948: 00000000 nop ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1824 40094c: 8fdc0010 lw gp,16(s8) ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1825 400950: 24020001 li v0,1 ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1826 400954: afc20018 sw v0,24(s8) ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1827 400958: 8fc20018 lw v0,24(s8) ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1828 40095c: 2442007b addiu v0,v0,123 ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1829 400960: afc20018 sw v0,24(s8) ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1830 400964: 8fc40020 lw a0,32(s8) ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1831 400968: 8f998060 lw t9,-32672(gp) ; | |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1832 40096c: 0320f809 jalr t9 ; | call f1(struct Trivial) |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1833 400970: 00000000 nop ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1834 400974: 8fdc0010 lw gp,16(s8) ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1835 400978: 8fc20018 lw v0,24(s8) ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1836 40097c: 2442ff85 addiu v0,v0,-123 ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1837 400980: afc20018 sw v0,24(s8) ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1838 400984: 27c2001c addiu v0,s8,28 ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1839 400988: 27c30024 addiu v1,s8,36 ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1840 40098c: 00402021 move a0,v0 ; | ptr to dest of copy of n |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1841 400990: 00602821 move a1,v1 ; | ptr to n |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1842 400994: 8f998050 lw t9,-32688(gp) ; | copy n | |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1843 400998: 0320f809 jalr t9 ; | | NonTrivial::NonTrivial(const NonTrivial&) / copy ctor |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1844 40099c: 00000000 nop ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1845 4009a0: 8fdc0010 lw gp,16(s8) ; |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1846 4009a4: 27c2001c addiu v0,s8,28 ; get ptr to copy of n -> v0 |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1847 4009a8: 00402021 move a0,v0 ; f2 arg 0 (ptr to copy of struct NonTrivial), via ptr as non-trivial |
|
cb19b2fe2422
- more disas examples to check behaviour of passing C++ non-trivial aggregates by value; they all behave the same, calling the copy ctor first, passing a pointer then
Tassilo Philipp
parents:
478
diff
changeset
|
1848 4009ac: 8f998058 lw t9,-32680(gp) ; | |
|
cb19b2fe2422
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1849 4009b0: 0320f809 jalr t9 ; | call f2(struct NonTrivial) |
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1850 4009b4: 00000000 nop ; |
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1851 4009b8: 8fdc0010 lw gp,16(s8) ; |
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1852 4009bc: 8fc20018 lw v0,24(s8) ; |
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1853 4009c0: 2442fff4 addiu v0,v0,-12 ; |
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1854 4009c4: afc20018 sw v0,24(s8) ; |
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1855 4009c8: 03c0e821 move sp,s8 ; |
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1856 4009cc: 8fbf002c lw ra,44(sp) ; |
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1857 4009d0: 8fbe0028 lw s8,40(sp) ; |
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1858 4009d4: 03e00008 jr ra ; |
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1859 4009d8: 27bd0030 addiu sp,sp,48 ; |
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1860 |
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1861 ; ... snip, removed code of ctor and copy ctor ... |
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1862 |
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1863 |
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1864 |
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327
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1865 ; vim: ft=asm |
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1866 |