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annotate third_party/luajit/dynasm/dasm_arm.h @ 279:b3b547563ec7
Add Google connector service and agent wiki
Implement the C/Seobeo Google Drive and Gmail connector with encrypted OAuth storage, Zenbu authentication, browser testing, AI tool discovery, chunked HTTP decoding, and Bazel coverage. Consolidate repository guidance into progressive wiki documentation and enforce arena-first allocation for new first-party C code.
Co-authored-by: Copilot <[email protected]>
Copilot-Session: 84c338fd-0939-4bb3-b7f3-1062eb213e5d
| author | MrJuneJune <me@mrjunejune.com> |
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| date | Mon, 17 Aug 2026 22:22:36 -0700 |
| parents | 94705b5986b3 |
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| rev | line source |
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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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109 if (D->sections[i].buf) |
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110 DASM_M_FREE(Dst, D->sections[i].buf, D->sections[i].bsize); |
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111 if (D->pclabels) DASM_M_FREE(Dst, D->pclabels, D->pcsize); |
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parents:
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112 if (D->lglabels) DASM_M_FREE(Dst, D->lglabels, D->lgsize); |
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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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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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123 |
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124 /* Grow PC label array. Can be called after dasm_setup(), too. */ |
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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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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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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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|
174 va_list ap; |
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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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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:
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|
191 va_start(ap, start); |
|
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parents:
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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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196 ofs += 4; |
|
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parents:
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|
197 } else { |
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parents:
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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; |
|
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parents:
diff
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204 case DASM_ESC: p++; ofs += 4; break; |
|
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parents:
diff
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|
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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parents:
diff
changeset
|
207 case DASM_REL_LG: |
|
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parents:
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|
208 n = (ins & 2047) - 10; pl = D->lglabels + n; |
|
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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; } |
|
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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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[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff
changeset
|
215 pl = D->pclabels + n; CKPL(pc, PC); |
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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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parents:
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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
changeset
|
326 |
|
94705b5986b3
[ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
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>
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436 } |
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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 |