annotate third_party/luajit/src/lj_emit_mips.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>
date Mon, 17 Aug 2026 22:22:36 -0700
parents 94705b5986b3
children
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178
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1 /*
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2 ** MIPS instruction emitter.
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3 ** Copyright (C) 2005-2023 Mike Pall. See Copyright Notice in luajit.h
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4 */
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5
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6 #if LJ_64
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7 static intptr_t get_k64val(ASMState *as, IRRef ref)
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8 {
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9 IRIns *ir = IR(ref);
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10 if (ir->o == IR_KINT64) {
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11 return (intptr_t)ir_kint64(ir)->u64;
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12 } else if (ir->o == IR_KGC) {
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13 return (intptr_t)ir_kgc(ir);
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14 } else if (ir->o == IR_KPTR || ir->o == IR_KKPTR) {
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15 return (intptr_t)ir_kptr(ir);
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16 } else if (LJ_SOFTFP && ir->o == IR_KNUM) {
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17 return (intptr_t)ir_knum(ir)->u64;
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18 } else {
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19 lj_assertA(ir->o == IR_KINT || ir->o == IR_KNULL,
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20 "bad 64 bit const IR op %d", ir->o);
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21 return ir->i; /* Sign-extended. */
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22 }
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23 }
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24 #endif
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25
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26 #if LJ_64
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27 #define get_kval(as, ref) get_k64val(as, ref)
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28 #else
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29 #define get_kval(as, ref) (IR((ref))->i)
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30 #endif
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31
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32 /* -- Emit basic instructions --------------------------------------------- */
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33
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34 static void emit_dst(ASMState *as, MIPSIns mi, Reg rd, Reg rs, Reg rt)
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35 {
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36 *--as->mcp = mi | MIPSF_D(rd) | MIPSF_S(rs) | MIPSF_T(rt);
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37 }
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38
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39 static void emit_dta(ASMState *as, MIPSIns mi, Reg rd, Reg rt, uint32_t a)
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40 {
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41 *--as->mcp = mi | MIPSF_D(rd) | MIPSF_T(rt) | MIPSF_A(a);
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42 }
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43
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44 #define emit_ds(as, mi, rd, rs) emit_dst(as, (mi), (rd), (rs), 0)
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45 #define emit_tg(as, mi, rt, rg) emit_dst(as, (mi), (rg)&31, 0, (rt))
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46
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47 static void emit_tsi(ASMState *as, MIPSIns mi, Reg rt, Reg rs, int32_t i)
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48 {
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49 *--as->mcp = mi | MIPSF_T(rt) | MIPSF_S(rs) | (i & 0xffff);
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50 }
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51
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52 #define emit_ti(as, mi, rt, i) emit_tsi(as, (mi), (rt), 0, (i))
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53 #define emit_hsi(as, mi, rh, rs, i) emit_tsi(as, (mi), (rh) & 31, (rs), (i))
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54
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55 static void emit_fgh(ASMState *as, MIPSIns mi, Reg rf, Reg rg, Reg rh)
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56 {
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57 *--as->mcp = mi | MIPSF_F(rf&31) | MIPSF_G(rg&31) | MIPSF_H(rh&31);
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58 }
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59
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60 #define emit_fg(as, mi, rf, rg) emit_fgh(as, (mi), (rf), (rg), 0)
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61
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62 static void emit_rotr(ASMState *as, Reg dest, Reg src, Reg tmp, uint32_t shift)
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63 {
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64 if (LJ_64 || (as->flags & JIT_F_MIPSXXR2)) {
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65 emit_dta(as, MIPSI_ROTR, dest, src, shift);
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66 } else {
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67 emit_dst(as, MIPSI_OR, dest, dest, tmp);
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68 emit_dta(as, MIPSI_SLL, dest, src, (-shift)&31);
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69 emit_dta(as, MIPSI_SRL, tmp, src, shift);
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70 }
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71 }
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72
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73 #if LJ_64 || LJ_HASBUFFER
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74 static void emit_tsml(ASMState *as, MIPSIns mi, Reg rt, Reg rs, uint32_t msb,
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75 uint32_t lsb)
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76 {
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77 *--as->mcp = mi | MIPSF_T(rt) | MIPSF_S(rs) | MIPSF_M(msb) | MIPSF_L(lsb);
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78 }
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79 #endif
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80
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81 /* -- Emit loads/stores --------------------------------------------------- */
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82
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83 /* Prefer rematerialization of BASE/L from global_State over spills. */
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84 #define emit_canremat(ref) ((ref) <= REF_BASE)
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85
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86 /* Try to find a one step delta relative to another constant. */
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87 static int emit_kdelta1(ASMState *as, Reg rd, intptr_t i)
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88 {
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89 RegSet work = ~as->freeset & RSET_GPR;
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90 while (work) {
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91 Reg r = rset_picktop(work);
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92 IRRef ref = regcost_ref(as->cost[r]);
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93 lj_assertA(r != rd, "dest reg %d not free", rd);
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94 if (ref < ASMREF_L) {
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95 intptr_t delta = (intptr_t)((uintptr_t)i -
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96 (uintptr_t)(ra_iskref(ref) ? ra_krefk(as, ref) : get_kval(as, ref)));
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97 if (checki16(delta)) {
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98 emit_tsi(as, MIPSI_AADDIU, rd, r, delta);
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99 return 1;
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100 }
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101 }
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102 rset_clear(work, r);
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103 }
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104 return 0; /* Failed. */
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105 }
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106
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107 /* Load a 32 bit constant into a GPR. */
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108 static void emit_loadi(ASMState *as, Reg r, int32_t i)
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109 {
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110 if (checki16(i)) {
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111 emit_ti(as, MIPSI_LI, r, i);
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112 } else {
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113 if ((i & 0xffff)) {
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114 intptr_t jgl = (intptr_t)(void *)J2G(as->J);
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115 if ((uintptr_t)(i-jgl) < 65536) {
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116 emit_tsi(as, MIPSI_ADDIU, r, RID_JGL, i-jgl-32768);
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117 return;
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118 } else if (emit_kdelta1(as, r, i)) {
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119 return;
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120 } else if ((i >> 16) == 0) {
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121 emit_tsi(as, MIPSI_ORI, r, RID_ZERO, i);
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122 return;
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parents:
diff changeset
123 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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parents:
diff changeset
124 emit_tsi(as, MIPSI_ORI, r, r, i);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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parents:
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125 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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parents:
diff changeset
126 emit_ti(as, MIPSI_LUI, r, (i >> 16));
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127 }
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MrJuneJune <me@mrjunejune.com>
parents:
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128 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
129
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MrJuneJune <me@mrjunejune.com>
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diff changeset
130 #if LJ_64
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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parents:
diff changeset
131 /* Load a 64 bit constant into a GPR. */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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132 static void emit_loadu64(ASMState *as, Reg r, uint64_t u64)
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133 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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134 if (checki32((int64_t)u64)) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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parents:
diff changeset
135 emit_loadi(as, r, (int32_t)u64);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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diff changeset
136 } else {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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diff changeset
137 uint64_t delta = u64 - (uint64_t)(void *)J2G(as->J);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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diff changeset
138 if (delta < 65536) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
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diff changeset
139 emit_tsi(as, MIPSI_DADDIU, r, RID_JGL, (int32_t)(delta-32768));
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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140 } else if (emit_kdelta1(as, r, (intptr_t)u64)) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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diff changeset
141 return;
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MrJuneJune <me@mrjunejune.com>
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diff changeset
142 } else {
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parents:
diff changeset
143 /* TODO MIPSR6: Use DAHI & DATI. Caveat: sign-extension. */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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144 if ((u64 & 0xffff)) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
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diff changeset
145 emit_tsi(as, MIPSI_ORI, r, r, u64 & 0xffff);
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MrJuneJune <me@mrjunejune.com>
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146 }
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MrJuneJune <me@mrjunejune.com>
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diff changeset
147 if (((u64 >> 16) & 0xffff)) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
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148 emit_dta(as, MIPSI_DSLL, r, r, 16);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
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149 emit_tsi(as, MIPSI_ORI, r, r, (u64 >> 16) & 0xffff);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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150 emit_dta(as, MIPSI_DSLL, r, r, 16);
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MrJuneJune <me@mrjunejune.com>
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151 } else {
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152 emit_dta(as, MIPSI_DSLL32, r, r, 0);
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MrJuneJune <me@mrjunejune.com>
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153 }
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MrJuneJune <me@mrjunejune.com>
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diff changeset
154 emit_loadi(as, r, (int32_t)(u64 >> 32));
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MrJuneJune <me@mrjunejune.com>
parents:
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155 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
156 /* TODO: There are probably more optimization opportunities. */
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MrJuneJune <me@mrjunejune.com>
parents:
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157 }
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MrJuneJune <me@mrjunejune.com>
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158 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
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159
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
160 #define emit_loada(as, r, addr) emit_loadu64(as, (r), u64ptr((addr)))
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
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161 #else
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
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diff changeset
162 #define emit_loada(as, r, addr) emit_loadi(as, (r), i32ptr((addr)))
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MrJuneJune <me@mrjunejune.com>
parents:
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163 #endif
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MrJuneJune <me@mrjunejune.com>
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164
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
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diff changeset
165 static Reg ra_allock(ASMState *as, intptr_t k, RegSet allow);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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166 static void ra_allockreg(ASMState *as, intptr_t k, Reg r);
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diff changeset
167
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
168 /* Get/set from constant pointer. */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
169 static void emit_lsptr(ASMState *as, MIPSIns mi, Reg r, void *p, RegSet allow)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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170 {
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diff changeset
171 intptr_t jgl = (intptr_t)(J2G(as->J));
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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diff changeset
172 intptr_t i = (intptr_t)(p);
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
173 Reg base;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
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diff changeset
174 if ((uint32_t)(i-jgl) < 65536) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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diff changeset
175 i = i-jgl-32768;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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diff changeset
176 base = RID_JGL;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
177 } else {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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parents:
diff changeset
178 base = ra_allock(as, i-(int16_t)i, allow);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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parents:
diff changeset
179 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
180 emit_tsi(as, mi, r, base, i);
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
181 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
182
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
183 #if LJ_64
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
184 static void emit_loadk64(ASMState *as, Reg r, IRIns *ir)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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parents:
diff changeset
185 {
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diff changeset
186 const uint64_t *k = &ir_k64(ir)->u64;
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diff changeset
187 Reg r64 = r;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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parents:
diff changeset
188 if (rset_test(RSET_FPR, r)) {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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diff changeset
189 r64 = RID_TMP;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
190 emit_tg(as, MIPSI_DMTC1, r64, r);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
191 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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parents:
diff changeset
192 if ((uint32_t)((intptr_t)k-(intptr_t)J2G(as->J)) < 65536)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
193 emit_lsptr(as, MIPSI_LD, r64, (void *)k, 0);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
194 else
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
195 emit_loadu64(as, r64, *k);
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
196 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
197 #else
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
198 #define emit_loadk64(as, r, ir) \
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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parents:
diff changeset
199 emit_lsptr(as, MIPSI_LDC1, ((r) & 31), (void *)&ir_knum((ir))->u64, RSET_GPR)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
200 #endif
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
201
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
202 /* Get/set global_State fields. */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
203 static void emit_lsglptr(ASMState *as, MIPSIns mi, Reg r, int32_t ofs)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
204 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
205 emit_tsi(as, mi, r, RID_JGL, ofs-32768);
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
206 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
207
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
208 #define emit_getgl(as, r, field) \
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
209 emit_lsglptr(as, MIPSI_AL, (r), (int32_t)offsetof(global_State, field))
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
210 #define emit_setgl(as, r, field) \
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
211 emit_lsglptr(as, MIPSI_AS, (r), (int32_t)offsetof(global_State, field))
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
212
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
213 /* Trace number is determined from per-trace exit stubs. */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
214 #define emit_setvmstate(as, i) UNUSED(i)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
215
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
216 /* -- Emit control-flow instructions -------------------------------------- */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
217
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
218 /* Label for internal jumps. */
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
219 typedef MCode *MCLabel;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
220
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
221 /* Return label pointing to current PC. */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
222 #define emit_label(as) ((as)->mcp)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
223
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
224 static void emit_branch(ASMState *as, MIPSIns mi, Reg rs, Reg rt, MCode *target)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
225 {
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
226 MCode *p = as->mcp;
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
227 ptrdiff_t delta = target - p;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
228 lj_assertA(((delta + 0x8000) >> 16) == 0, "branch target out of range");
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
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parents:
diff changeset
229 *--p = mi | MIPSF_S(rs) | MIPSF_T(rt) | ((uint32_t)delta & 0xffffu);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
230 as->mcp = p;
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MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
231 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
232
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
233 static void emit_jmp(ASMState *as, MCode *target)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
234 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
235 *--as->mcp = MIPSI_NOP;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
236 emit_branch(as, MIPSI_B, RID_ZERO, RID_ZERO, (target));
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
237 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
238
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
239 static void emit_call(ASMState *as, void *target, int needcfa)
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
240 {
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
241 MCode *p = as->mcp;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
242 #if LJ_TARGET_MIPSR6
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
243 ptrdiff_t delta = (char *)target - (char *)p;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
244 if ((((delta>>2) + 0x02000000) >> 26) == 0) { /* Try compact call first. */
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
245 *--p = MIPSI_BALC | (((uintptr_t)delta >>2) & 0x03ffffffu);
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
246 as->mcp = p;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
247 return;
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
diff changeset
248 }
94705b5986b3 [ThirdParty] Added WRK and luajit for load testing.
MrJuneJune <me@mrjunejune.com>
parents:
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249 #endif
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250 *--p = MIPSI_NOP; /* Delay slot. */
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251 if ((((uintptr_t)target ^ (uintptr_t)p) >> 28) == 0) {
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252 #if !LJ_TARGET_MIPSR6
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253 *--p = (((uintptr_t)target & 1) ? MIPSI_JALX : MIPSI_JAL) |
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254 (((uintptr_t)target >>2) & 0x03ffffffu);
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255 #else
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256 *--p = MIPSI_JAL | (((uintptr_t)target >>2) & 0x03ffffffu);
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257 #endif
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258 } else { /* Target out of range: need indirect call. */
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259 *--p = MIPSI_JALR | MIPSF_S(RID_CFUNCADDR);
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260 needcfa = 1;
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261 }
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262 as->mcp = p;
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263 if (needcfa) ra_allockreg(as, (intptr_t)target, RID_CFUNCADDR);
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264 }
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265
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266 /* -- Emit generic operations --------------------------------------------- */
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267
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268 #define emit_move(as, dst, src) \
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269 emit_ds(as, MIPSI_MOVE, (dst), (src))
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270
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271 /* Generic move between two regs. */
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272 static void emit_movrr(ASMState *as, IRIns *ir, Reg dst, Reg src)
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273 {
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274 if (dst < RID_MAX_GPR)
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275 emit_move(as, dst, src);
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276 else
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277 emit_fg(as, irt_isnum(ir->t) ? MIPSI_MOV_D : MIPSI_MOV_S, dst, src);
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278 }
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279
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280 /* Generic load of register with base and (small) offset address. */
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281 static void emit_loadofs(ASMState *as, IRIns *ir, Reg r, Reg base, int32_t ofs)
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282 {
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283 if (r < RID_MAX_GPR)
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284 emit_tsi(as, irt_is64(ir->t) ? MIPSI_LD : MIPSI_LW, r, base, ofs);
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285 else
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286 emit_tsi(as, irt_isnum(ir->t) ? MIPSI_LDC1 : MIPSI_LWC1,
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287 (r & 31), base, ofs);
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288 }
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289
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290 /* Generic store of register with base and (small) offset address. */
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291 static void emit_storeofs(ASMState *as, IRIns *ir, Reg r, Reg base, int32_t ofs)
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292 {
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293 if (r < RID_MAX_GPR)
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294 emit_tsi(as, irt_is64(ir->t) ? MIPSI_SD : MIPSI_SW, r, base, ofs);
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295 else
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296 emit_tsi(as, irt_isnum(ir->t) ? MIPSI_SDC1 : MIPSI_SWC1,
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297 (r&31), base, ofs);
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298 }
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299
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300 /* Add offset to pointer. */
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301 static void emit_addptr(ASMState *as, Reg r, int32_t ofs)
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302 {
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303 if (ofs) {
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304 lj_assertA(checki16(ofs), "offset %d out of range", ofs);
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305 emit_tsi(as, MIPSI_AADDIU, r, r, ofs);
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306 }
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307 }
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308
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309 #define emit_spsub(as, ofs) emit_addptr(as, RID_SP, -(ofs))
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310