Mercurial
annotate third_party/luajit/dynasm/dasm_arm.h @ 178:94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
| author | MrJuneJune <me@mrjunejune.com> |
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| date | Thu, 22 Jan 2026 20:10:30 -0800 |
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| rev | line source |
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178
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1 /* |
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2 ** DynASM ARM encoding engine. |
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3 ** Copyright (C) 2005-2023 Mike Pall. All rights reserved. |
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4 ** Released under the MIT license. See dynasm.lua for full copyright notice. |
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5 */ |
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6 |
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7 #include <stddef.h> |
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8 #include <stdarg.h> |
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9 #include <string.h> |
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10 #include <stdlib.h> |
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11 |
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12 #define DASM_ARCH "arm" |
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13 |
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14 #ifndef DASM_EXTERN |
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15 #define DASM_EXTERN(a,b,c,d) 0 |
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16 #endif |
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17 |
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18 /* Action definitions. */ |
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19 enum { |
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20 DASM_STOP, DASM_SECTION, DASM_ESC, DASM_REL_EXT, |
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21 /* The following actions need a buffer position. */ |
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22 DASM_ALIGN, DASM_REL_LG, DASM_LABEL_LG, |
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23 /* The following actions also have an argument. */ |
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24 DASM_REL_PC, DASM_LABEL_PC, |
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25 DASM_IMM, DASM_IMM12, DASM_IMM16, DASM_IMML8, DASM_IMML12, DASM_IMMV8, |
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26 DASM__MAX |
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27 }; |
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28 |
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29 /* Maximum number of section buffer positions for a single dasm_put() call. */ |
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30 #define DASM_MAXSECPOS 25 |
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31 |
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32 /* DynASM encoder status codes. Action list offset or number are or'ed in. */ |
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33 #define DASM_S_OK 0x00000000 |
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34 #define DASM_S_NOMEM 0x01000000 |
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35 #define DASM_S_PHASE 0x02000000 |
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36 #define DASM_S_MATCH_SEC 0x03000000 |
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37 #define DASM_S_RANGE_I 0x11000000 |
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38 #define DASM_S_RANGE_SEC 0x12000000 |
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39 #define DASM_S_RANGE_LG 0x13000000 |
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40 #define DASM_S_RANGE_PC 0x14000000 |
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41 #define DASM_S_RANGE_REL 0x15000000 |
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42 #define DASM_S_UNDEF_LG 0x21000000 |
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43 #define DASM_S_UNDEF_PC 0x22000000 |
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44 |
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45 /* Macros to convert positions (8 bit section + 24 bit index). */ |
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46 #define DASM_POS2IDX(pos) ((pos)&0x00ffffff) |
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47 #define DASM_POS2BIAS(pos) ((pos)&0xff000000) |
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48 #define DASM_SEC2POS(sec) ((sec)<<24) |
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49 #define DASM_POS2SEC(pos) ((pos)>>24) |
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50 #define DASM_POS2PTR(D, pos) (D->sections[DASM_POS2SEC(pos)].rbuf + (pos)) |
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51 |
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52 /* Action list type. */ |
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53 typedef const unsigned int *dasm_ActList; |
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54 |
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55 /* Per-section structure. */ |
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56 typedef struct dasm_Section { |
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57 int *rbuf; /* Biased buffer pointer (negative section bias). */ |
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58 int *buf; /* True buffer pointer. */ |
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59 size_t bsize; /* Buffer size in bytes. */ |
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60 int pos; /* Biased buffer position. */ |
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61 int epos; /* End of biased buffer position - max single put. */ |
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62 int ofs; /* Byte offset into section. */ |
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63 } dasm_Section; |
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64 |
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65 /* Core structure holding the DynASM encoding state. */ |
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66 struct dasm_State { |
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67 size_t psize; /* Allocated size of this structure. */ |
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68 dasm_ActList actionlist; /* Current actionlist pointer. */ |
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69 int *lglabels; /* Local/global chain/pos ptrs. */ |
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70 size_t lgsize; |
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71 int *pclabels; /* PC label chains/pos ptrs. */ |
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72 size_t pcsize; |
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73 void **globals; /* Array of globals. */ |
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74 dasm_Section *section; /* Pointer to active section. */ |
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75 size_t codesize; /* Total size of all code sections. */ |
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76 int maxsection; /* 0 <= sectionidx < maxsection. */ |
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77 int status; /* Status code. */ |
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78 dasm_Section sections[1]; /* All sections. Alloc-extended. */ |
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79 }; |
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80 |
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81 /* The size of the core structure depends on the max. number of sections. */ |
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82 #define DASM_PSZ(ms) (sizeof(dasm_State)+(ms-1)*sizeof(dasm_Section)) |
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83 |
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84 |
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85 /* Initialize DynASM state. */ |
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86 void dasm_init(Dst_DECL, int maxsection) |
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87 { |
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88 dasm_State *D; |
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89 size_t psz = 0; |
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90 Dst_REF = NULL; |
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91 DASM_M_GROW(Dst, struct dasm_State, Dst_REF, psz, DASM_PSZ(maxsection)); |
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92 D = Dst_REF; |
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93 D->psize = psz; |
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94 D->lglabels = NULL; |
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95 D->lgsize = 0; |
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96 D->pclabels = NULL; |
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97 D->pcsize = 0; |
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98 D->globals = NULL; |
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99 D->maxsection = maxsection; |
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100 memset((void *)D->sections, 0, maxsection * sizeof(dasm_Section)); |
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101 } |
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102 |
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103 /* Free DynASM state. */ |
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104 void dasm_free(Dst_DECL) |
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105 { |
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106 dasm_State *D = Dst_REF; |
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107 int i; |
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108 for (i = 0; i < D->maxsection; i++) |
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parents:
diff
changeset
|
109 if (D->sections[i].buf) |
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parents:
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110 DASM_M_FREE(Dst, D->sections[i].buf, D->sections[i].bsize); |
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parents:
diff
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|
111 if (D->pclabels) DASM_M_FREE(Dst, D->pclabels, D->pcsize); |
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parents:
diff
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|
112 if (D->lglabels) DASM_M_FREE(Dst, D->lglabels, D->lgsize); |
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94705b5986b3
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parents:
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|
113 DASM_M_FREE(Dst, D, D->psize); |
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114 } |
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|
115 |
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parents:
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116 /* Setup global label array. Must be called before dasm_setup(). */ |
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117 void dasm_setupglobal(Dst_DECL, void **gl, unsigned int maxgl) |
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118 { |
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119 dasm_State *D = Dst_REF; |
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120 D->globals = gl; |
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121 DASM_M_GROW(Dst, int, D->lglabels, D->lgsize, (10+maxgl)*sizeof(int)); |
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122 } |
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parents:
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123 |
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parents:
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124 /* Grow PC label array. Can be called after dasm_setup(), too. */ |
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parents:
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|
125 void dasm_growpc(Dst_DECL, unsigned int maxpc) |
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126 { |
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127 dasm_State *D = Dst_REF; |
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128 size_t osz = D->pcsize; |
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129 DASM_M_GROW(Dst, int, D->pclabels, D->pcsize, maxpc*sizeof(int)); |
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130 memset((void *)(((unsigned char *)D->pclabels)+osz), 0, D->pcsize-osz); |
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131 } |
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132 |
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133 /* Setup encoder. */ |
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134 void dasm_setup(Dst_DECL, const void *actionlist) |
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135 { |
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136 dasm_State *D = Dst_REF; |
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137 int i; |
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138 D->actionlist = (dasm_ActList)actionlist; |
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139 D->status = DASM_S_OK; |
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140 D->section = &D->sections[0]; |
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parents:
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141 memset((void *)D->lglabels, 0, D->lgsize); |
|
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parents:
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142 if (D->pclabels) memset((void *)D->pclabels, 0, D->pcsize); |
|
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parents:
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143 for (i = 0; i < D->maxsection; i++) { |
|
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144 D->sections[i].pos = DASM_SEC2POS(i); |
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parents:
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145 D->sections[i].rbuf = D->sections[i].buf - D->sections[i].pos; |
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146 D->sections[i].ofs = 0; |
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147 } |
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148 } |
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149 |
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150 |
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parents:
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|
151 #ifdef DASM_CHECKS |
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152 #define CK(x, st) \ |
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153 do { if (!(x)) { \ |
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154 D->status = DASM_S_##st|(p-D->actionlist-1); return; } } while (0) |
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155 #define CKPL(kind, st) \ |
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156 do { if ((size_t)((char *)pl-(char *)D->kind##labels) >= D->kind##size) { \ |
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157 D->status = DASM_S_RANGE_##st|(p-D->actionlist-1); return; } } while (0) |
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158 #else |
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159 #define CK(x, st) ((void)0) |
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160 #define CKPL(kind, st) ((void)0) |
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161 #endif |
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162 |
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parents:
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|
163 static int dasm_imm12(unsigned int n) |
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164 { |
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165 int i; |
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166 for (i = 0; i < 16; i++, n = (n << 2) | (n >> 30)) |
|
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167 if (n <= 255) return (int)(n + (i << 8)); |
|
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168 return -1; |
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|
169 } |
|
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parents:
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170 |
|
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parents:
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|
171 /* Pass 1: Store actions and args, link branches/labels, estimate offsets. */ |
|
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parents:
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|
172 void dasm_put(Dst_DECL, int start, ...) |
|
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173 { |
|
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parents:
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|
174 va_list ap; |
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parents:
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175 dasm_State *D = Dst_REF; |
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parents:
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176 dasm_ActList p = D->actionlist + start; |
|
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parents:
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177 dasm_Section *sec = D->section; |
|
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parents:
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178 int pos = sec->pos, ofs = sec->ofs; |
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parents:
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179 int *b; |
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parents:
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180 |
|
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parents:
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|
181 if (pos >= sec->epos) { |
|
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parents:
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182 DASM_M_GROW(Dst, int, sec->buf, sec->bsize, |
|
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parents:
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183 sec->bsize + 2*DASM_MAXSECPOS*sizeof(int)); |
|
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parents:
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184 sec->rbuf = sec->buf - DASM_POS2BIAS(pos); |
|
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parents:
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185 sec->epos = (int)sec->bsize/sizeof(int) - DASM_MAXSECPOS+DASM_POS2BIAS(pos); |
|
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parents:
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|
186 } |
|
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parents:
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187 |
|
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parents:
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|
188 b = sec->rbuf; |
|
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parents:
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189 b[pos++] = start; |
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parents:
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190 |
|
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parents:
diff
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|
191 va_start(ap, start); |
|
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parents:
diff
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|
192 while (1) { |
|
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parents:
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|
193 unsigned int ins = *p++; |
|
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parents:
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194 unsigned int action = (ins >> 16); |
|
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parents:
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195 if (action >= DASM__MAX) { |
|
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parents:
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196 ofs += 4; |
|
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parents:
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|
197 } else { |
|
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parents:
diff
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198 int *pl, n = action >= DASM_REL_PC ? va_arg(ap, int) : 0; |
|
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parents:
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|
199 switch (action) { |
|
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parents:
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|
200 case DASM_STOP: goto stop; |
|
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parents:
diff
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|
201 case DASM_SECTION: |
|
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parents:
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202 n = (ins & 255); CK(n < D->maxsection, RANGE_SEC); |
|
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parents:
diff
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|
203 D->section = &D->sections[n]; goto stop; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
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parents:
diff
changeset
|
204 case DASM_ESC: p++; ofs += 4; break; |
|
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parents:
diff
changeset
|
205 case DASM_REL_EXT: break; |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
206 case DASM_ALIGN: ofs += (ins & 255); b[pos++] = ofs; break; |
|
94705b5986b3
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MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
207 case DASM_REL_LG: |
|
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parents:
diff
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|
208 n = (ins & 2047) - 10; pl = D->lglabels + n; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
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parents:
diff
changeset
|
209 /* Bkwd rel or global. */ |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
210 if (n >= 0) { CK(n>=10||*pl<0, RANGE_LG); CKPL(lg, LG); goto putrel; } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
211 pl += 10; n = *pl; |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
212 if (n < 0) n = 0; /* Start new chain for fwd rel if label exists. */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
213 goto linkrel; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
214 case DASM_REL_PC: |
|
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MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
215 pl = D->pclabels + n; CKPL(pc, PC); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
216 putrel: |
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217 n = *pl; |
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218 if (n < 0) { /* Label exists. Get label pos and store it. */ |
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219 b[pos] = -n; |
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220 } else { |
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221 linkrel: |
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222 b[pos] = n; /* Else link to rel chain, anchored at label. */ |
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223 *pl = pos; |
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224 } |
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225 pos++; |
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226 break; |
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227 case DASM_LABEL_LG: |
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228 pl = D->lglabels + (ins & 2047) - 10; CKPL(lg, LG); goto putlabel; |
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229 case DASM_LABEL_PC: |
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230 pl = D->pclabels + n; CKPL(pc, PC); |
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231 putlabel: |
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232 n = *pl; /* n > 0: Collapse rel chain and replace with label pos. */ |
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233 while (n > 0) { int *pb = DASM_POS2PTR(D, n); n = *pb; *pb = pos; |
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234 } |
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235 *pl = -pos; /* Label exists now. */ |
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236 b[pos++] = ofs; /* Store pass1 offset estimate. */ |
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237 break; |
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238 case DASM_IMM: |
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239 case DASM_IMM16: |
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240 #ifdef DASM_CHECKS |
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241 CK((n & ((1<<((ins>>10)&31))-1)) == 0, RANGE_I); |
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242 if ((ins & 0x8000)) |
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243 CK(((n + (1<<(((ins>>5)&31)-1)))>>((ins>>5)&31)) == 0, RANGE_I); |
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244 else |
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245 CK((n>>((ins>>5)&31)) == 0, RANGE_I); |
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246 #endif |
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247 b[pos++] = n; |
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248 break; |
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249 case DASM_IMMV8: |
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250 CK((n & 3) == 0, RANGE_I); |
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251 n >>= 2; |
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252 /* fallthrough */ |
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253 case DASM_IMML8: |
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254 case DASM_IMML12: |
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255 CK(n >= 0 ? ((n>>((ins>>5)&31)) == 0) : |
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256 (((-n)>>((ins>>5)&31)) == 0), RANGE_I); |
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257 b[pos++] = n; |
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258 break; |
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259 case DASM_IMM12: |
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260 CK(dasm_imm12((unsigned int)n) != -1, RANGE_I); |
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261 b[pos++] = n; |
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262 break; |
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263 } |
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264 } |
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265 } |
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266 stop: |
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267 va_end(ap); |
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268 sec->pos = pos; |
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269 sec->ofs = ofs; |
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270 } |
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271 #undef CK |
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272 |
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273 /* Pass 2: Link sections, shrink aligns, fix label offsets. */ |
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274 int dasm_link(Dst_DECL, size_t *szp) |
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275 { |
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276 dasm_State *D = Dst_REF; |
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277 int secnum; |
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278 int ofs = 0; |
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279 |
|
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|
280 #ifdef DASM_CHECKS |
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281 *szp = 0; |
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282 if (D->status != DASM_S_OK) return D->status; |
|
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283 { |
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284 int pc; |
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285 for (pc = 0; pc*sizeof(int) < D->pcsize; pc++) |
|
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286 if (D->pclabels[pc] > 0) return DASM_S_UNDEF_PC|pc; |
|
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287 } |
|
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288 #endif |
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289 |
|
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|
290 { /* Handle globals not defined in this translation unit. */ |
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291 int idx; |
|
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292 for (idx = 10; idx*sizeof(int) < D->lgsize; idx++) { |
|
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293 int n = D->lglabels[idx]; |
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294 /* Undefined label: Collapse rel chain and replace with marker (< 0). */ |
|
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295 while (n > 0) { int *pb = DASM_POS2PTR(D, n); n = *pb; *pb = -idx; } |
|
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296 } |
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297 } |
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298 |
|
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299 /* Combine all code sections. No support for data sections (yet). */ |
|
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300 for (secnum = 0; secnum < D->maxsection; secnum++) { |
|
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parents:
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301 dasm_Section *sec = D->sections + secnum; |
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302 int *b = sec->rbuf; |
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303 int pos = DASM_SEC2POS(secnum); |
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304 int lastpos = sec->pos; |
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305 |
|
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parents:
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|
306 while (pos != lastpos) { |
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307 dasm_ActList p = D->actionlist + b[pos++]; |
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parents:
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|
308 while (1) { |
|
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309 unsigned int ins = *p++; |
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310 unsigned int action = (ins >> 16); |
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311 switch (action) { |
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312 case DASM_STOP: case DASM_SECTION: goto stop; |
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parents:
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313 case DASM_ESC: p++; break; |
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parents:
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314 case DASM_REL_EXT: break; |
|
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parents:
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315 case DASM_ALIGN: ofs -= (b[pos++] + ofs) & (ins & 255); break; |
|
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parents:
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316 case DASM_REL_LG: case DASM_REL_PC: pos++; break; |
|
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parents:
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317 case DASM_LABEL_LG: case DASM_LABEL_PC: b[pos++] += ofs; break; |
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parents:
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318 case DASM_IMM: case DASM_IMM12: case DASM_IMM16: |
|
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parents:
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319 case DASM_IMML8: case DASM_IMML12: case DASM_IMMV8: pos++; break; |
|
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320 } |
|
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parents:
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321 } |
|
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parents:
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322 stop: (void)0; |
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parents:
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323 } |
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parents:
diff
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324 ofs += sec->ofs; /* Next section starts right after current section. */ |
|
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parents:
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325 } |
|
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parents:
diff
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|
326 |
|
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parents:
diff
changeset
|
327 D->codesize = ofs; /* Total size of all code sections */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
328 *szp = ofs; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
329 return DASM_S_OK; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
330 } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
331 |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
332 #ifdef DASM_CHECKS |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
333 #define CK(x, st) \ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
334 do { if (!(x)) return DASM_S_##st|(p-D->actionlist-1); } while (0) |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
335 #else |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
336 #define CK(x, st) ((void)0) |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
337 #endif |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
338 |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
339 /* Pass 3: Encode sections. */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
340 int dasm_encode(Dst_DECL, void *buffer) |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
341 { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
342 dasm_State *D = Dst_REF; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
343 char *base = (char *)buffer; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
344 unsigned int *cp = (unsigned int *)buffer; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
345 int secnum; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
346 |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
347 /* Encode all code sections. No support for data sections (yet). */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
348 for (secnum = 0; secnum < D->maxsection; secnum++) { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
349 dasm_Section *sec = D->sections + secnum; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
350 int *b = sec->buf; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
351 int *endb = sec->rbuf + sec->pos; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
352 |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
353 while (b != endb) { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
354 dasm_ActList p = D->actionlist + *b++; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
355 while (1) { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
356 unsigned int ins = *p++; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
357 unsigned int action = (ins >> 16); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
358 int n = (action >= DASM_ALIGN && action < DASM__MAX) ? *b++ : 0; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
359 switch (action) { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
360 case DASM_STOP: case DASM_SECTION: goto stop; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
361 case DASM_ESC: *cp++ = *p++; break; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
362 case DASM_REL_EXT: |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
363 n = DASM_EXTERN(Dst, (unsigned char *)cp, (ins&2047), !(ins&2048)); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
364 goto patchrel; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
365 case DASM_ALIGN: |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
366 ins &= 255; while ((((char *)cp - base) & ins)) *cp++ = 0xe1a00000; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
367 break; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
368 case DASM_REL_LG: |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
369 if (n < 0) { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
370 n = (int)((ptrdiff_t)D->globals[-n-10] - (ptrdiff_t)cp - 4); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
371 goto patchrel; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
372 } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
373 /* fallthrough */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
374 case DASM_REL_PC: |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
375 CK(n >= 0, UNDEF_PC); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
376 n = *DASM_POS2PTR(D, n) - (int)((char *)cp - base) - 4; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
377 patchrel: |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
378 if ((ins & 0x800) == 0) { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
379 CK((n & 3) == 0 && ((n+0x02000000) >> 26) == 0, RANGE_REL); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
380 cp[-1] |= ((n >> 2) & 0x00ffffff); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
381 } else if ((ins & 0x1000)) { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
382 CK((n & 3) == 0 && -256 <= n && n <= 256, RANGE_REL); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
383 goto patchimml8; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
384 } else if ((ins & 0x2000) == 0) { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
385 CK((n & 3) == 0 && -4096 <= n && n <= 4096, RANGE_REL); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
386 goto patchimml; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
387 } else { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
388 CK((n & 3) == 0 && -1020 <= n && n <= 1020, RANGE_REL); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
389 n >>= 2; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
390 goto patchimml; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
391 } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
392 break; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
393 case DASM_LABEL_LG: |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
394 ins &= 2047; if (ins >= 20) D->globals[ins-20] = (void *)(base + n); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
395 break; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
396 case DASM_LABEL_PC: break; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
397 case DASM_IMM: |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
398 cp[-1] |= ((n>>((ins>>10)&31)) & ((1<<((ins>>5)&31))-1)) << (ins&31); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
399 break; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
400 case DASM_IMM12: |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
401 cp[-1] |= dasm_imm12((unsigned int)n); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
402 break; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
403 case DASM_IMM16: |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
404 cp[-1] |= ((n & 0xf000) << 4) | (n & 0x0fff); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
405 break; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
406 case DASM_IMML8: patchimml8: |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
407 cp[-1] |= n >= 0 ? (0x00800000 | (n & 0x0f) | ((n & 0xf0) << 4)) : |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
408 ((-n & 0x0f) | ((-n & 0xf0) << 4)); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
409 break; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
410 case DASM_IMML12: case DASM_IMMV8: patchimml: |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
411 cp[-1] |= n >= 0 ? (0x00800000 | n) : (-n); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
412 break; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
413 default: *cp++ = ins; break; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
414 } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
415 } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
416 stop: (void)0; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
417 } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
418 } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
419 |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
420 if (base + D->codesize != (char *)cp) /* Check for phase errors. */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
421 return DASM_S_PHASE; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
422 return DASM_S_OK; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
423 } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
424 #undef CK |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
425 |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
426 /* Get PC label offset. */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
427 int dasm_getpclabel(Dst_DECL, unsigned int pc) |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
428 { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
429 dasm_State *D = Dst_REF; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
430 if (pc*sizeof(int) < D->pcsize) { |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
431 int pos = D->pclabels[pc]; |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
432 if (pos < 0) return *DASM_POS2PTR(D, -pos); |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
433 if (pos > 0) return -1; /* Undefined. */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
434 } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
435 return -2; /* Unused or out of range. */ |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
436 } |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
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437 |
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438 #ifdef DASM_CHECKS |
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439 /* Optional sanity checker to call between isolated encoding steps. */ |
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440 int dasm_checkstep(Dst_DECL, int secmatch) |
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441 { |
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442 dasm_State *D = Dst_REF; |
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443 if (D->status == DASM_S_OK) { |
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444 int i; |
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445 for (i = 1; i <= 9; i++) { |
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446 if (D->lglabels[i] > 0) { D->status = DASM_S_UNDEF_LG|i; break; } |
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447 D->lglabels[i] = 0; |
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448 } |
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449 } |
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450 if (D->status == DASM_S_OK && secmatch >= 0 && |
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451 D->section != &D->sections[secmatch]) |
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452 D->status = DASM_S_MATCH_SEC|(D->section-D->sections); |
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453 return D->status; |
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454 } |
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455 #endif |
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456 |