Mercurial > pub > dyncall > dyncall
annotate dyncall/dyncall_callvm_mips_n64.c @ 305:b104c5beec8b
- softfloat support for mips64/n64 abi
| author | Tassilo Philipp |
|---|---|
| date | Wed, 23 May 2018 11:41:34 +0200 |
| parents | f5577f6bf97a |
| children | ad5f9803f52f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 | |
| 3 Package: dyncall | |
| 4 Library: dyncall | |
| 5 File: dyncall/dyncall_callvm_mips_n64.c | |
| 6 Description: mips "n64" ABI callvm implementation | |
| 7 License: | |
| 8 | |
| 281 | 9 Copyright (c) 2007-2018 Daniel Adler <dadler@uni-goettingen.de>, |
| 0 | 10 Tassilo Philipp <tphilipp@potion-studios.com> |
| 11 | |
| 12 Permission to use, copy, modify, and distribute this software for any | |
| 13 purpose with or without fee is hereby granted, provided that the above | |
| 14 copyright notice and this permission notice appear in all copies. | |
| 15 | |
| 16 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
| 17 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
| 18 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
| 19 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 20 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| 21 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
| 22 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 23 | |
| 24 */ | |
| 25 | |
| 26 | |
| 27 | |
| 28 /* | |
| 29 | |
| 30 dyncall callvm for 64bit MIPS family of processors | |
| 31 | |
| 32 SUPPORTED CALLING CONVENTIONS | |
| 33 n64 | |
| 34 | |
| 35 REVISION | |
| 36 2010/05/30 initial | |
| 37 | |
| 38 in contrast to o32, there is no space reserved for parameters | |
| 39 passed over registers. | |
| 40 more registers are used and registers are always used. | |
| 41 | |
| 42 stack is always 16-byte aligned at entry (call to call-kernel automatically | |
| 43 aligns argument stack. | |
| 44 | |
| 45 integer and float register-file is interleaved either taking one slot up | |
| 46 skipping the other. | |
| 47 | |
| 48 | |
| 49 */ | |
| 50 | |
| 51 | |
| 52 #include "dyncall_callvm_mips_n64.h" | |
| 53 #include "dyncall_alloc.h" | |
| 54 #include "dyncall_utils.h" | |
| 55 | |
| 56 static void dc_callvm_reset_mips_n64(DCCallVM* in_self) | |
| 57 { | |
| 58 DCCallVM_mips_n64* self = (DCCallVM_mips_n64*)in_self; | |
| 59 dcVecReset(&self->mVecHead); | |
| 60 self->mRegCount = 0; | |
| 305 | 61 #if defined(DC__ABI_HARDFLOAT) |
| 0 | 62 self->mRegData.mUseDouble = 0LL; |
| 305 | 63 #endif /* DC__ABI_HARDFLOAT */ |
| 0 | 64 } |
| 65 | |
| 66 | |
| 67 static void dc_callvm_free_mips_n64(DCCallVM* in_self) | |
| 68 { | |
| 69 dcFreeMem(in_self); | |
| 70 } | |
| 71 | |
| 72 /* pass arguments : | |
| 73 | |
| 74 - promote to 64-bit integer. | |
| 75 - fill up integers and float - left-to-right otherwise go over stack. | |
| 76 */ | |
| 77 | |
| 78 /* arg int -- fillup 64-bit integer register file OR push on stack */ | |
| 79 | |
| 305 | 80 static void dc_callvm_argLongLong_mips_n64(DCCallVM* in_self, DClonglong x) |
| 0 | 81 { |
| 82 DCCallVM_mips_n64* self = (DCCallVM_mips_n64*)in_self; | |
| 83 /* fillup integer register file */ | |
| 84 if (self->mRegCount < 8) | |
| 305 | 85 self->mRegData.mIntData[self->mRegCount++] = x; |
| 0 | 86 else |
| 305 | 87 dcVecAppend(&self->mVecHead, &x, sizeof(DClonglong)); |
| 0 | 88 } |
| 89 | |
| 305 | 90 static void dc_callvm_argInt_mips_n64(DCCallVM* in_self, DCint x) |
| 0 | 91 { |
| 305 | 92 dc_callvm_argLongLong_mips_n64(in_self, (DClonglong)x); |
| 0 | 93 } |
| 94 | |
| 95 static void dc_callvm_argPointer_mips_n64(DCCallVM* in_self, DCpointer x) | |
| 96 { | |
| 305 | 97 dc_callvm_argLongLong_mips_n64(in_self, *(DClonglong*)&x); |
| 0 | 98 } |
| 99 | |
| 100 static void dc_callvm_argBool_mips_n64(DCCallVM* in_self, DCbool x) | |
| 101 { | |
| 102 dc_callvm_argLongLong_mips_n64(in_self, (DClonglong)x); | |
| 103 } | |
| 104 | |
| 105 static void dc_callvm_argChar_mips_n64(DCCallVM* in_self, DCchar x) | |
| 106 { | |
| 107 dc_callvm_argLongLong_mips_n64(in_self, (DClonglong)x); | |
| 108 } | |
| 109 | |
| 110 static void dc_callvm_argShort_mips_n64(DCCallVM* in_self, DCshort x) | |
| 111 { | |
| 112 dc_callvm_argLongLong_mips_n64(in_self, (DClonglong)x); | |
| 113 } | |
| 114 | |
| 115 static void dc_callvm_argLong_mips_n64(DCCallVM* in_self, DClong x) | |
| 116 { | |
| 117 dc_callvm_argLongLong_mips_n64(in_self, (DClonglong)x); | |
| 118 } | |
| 119 | |
| 120 static void dc_callvm_argDouble_mips_n64(DCCallVM* in_self, DCdouble x) | |
| 121 { | |
| 305 | 122 #if defined(DC__ABI_HARDFLOAT) |
| 0 | 123 DCCallVM_mips_n64* self = (DCCallVM_mips_n64*)in_self; |
| 124 if (self->mRegCount < 8) { | |
| 125 self->mRegData.mUseDouble |= 1<<( self->mRegCount ); | |
| 126 self->mRegData.mFloatData[self->mRegCount++].d = x; | |
| 127 } else { | |
| 305 | 128 dcVecAppend(&self->mVecHead, &x, sizeof(DCdouble)); |
| 0 | 129 } |
| 305 | 130 #else |
| 131 dc_callvm_argLongLong_mips_n64(in_self, *(DClonglong*)&x); | |
| 132 #endif /* DC__ABI_HARDFLOAT */ | |
| 0 | 133 } |
| 134 | |
| 135 static void dc_callvm_argFloat_mips_n64(DCCallVM* in_self, DCfloat x) | |
| 136 { | |
| 305 | 137 #if defined(DC__ABI_HARDFLOAT) |
| 0 | 138 DCCallVM_mips_n64* self = (DCCallVM_mips_n64*)in_self; |
| 139 if (self->mRegCount < 8) { | |
| 140 /*self->mRegData.mFloatData[self->mRegCount++].d = (DCdouble) x;*/ | |
| 141 self->mRegData.mFloatData[self->mRegCount++].f = x; | |
| 142 } else { | |
| 305 | 143 dcVecAppend(&self->mVecHead, &x, sizeof(DCfloat)); |
| 144 dcVecSkip(&self->mVecHead, sizeof(DCfloat)); | |
| 0 | 145 } |
| 305 | 146 #else |
| 147 DCfloat f[] = {x,0.f}; | |
| 148 # if defined(DC__Endian_BIG) | |
| 149 // floats in regs always right justified | |
| 150 if (((DCCallVM_mips_n64*)in_self)->mRegCount < 8) { | |
| 151 f[1] = f[0]; | |
| 152 f[0] = 0.f; | |
| 153 } | |
| 154 # endif /* DC__Endian_BIG */ | |
| 155 dc_callvm_argLongLong_mips_n64(in_self, *(DClonglong*)&f); | |
| 156 #endif /* DC__ABI_HARDFLOAT */ | |
| 0 | 157 } |
| 158 | |
| 159 | |
|
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|
160 /* Ellipsis calls: |
| 0 | 161 - float is promoted to double (due to ANSI C). |
| 162 - double is passed via integer register-file (due to MIPS ABI). | |
| 163 */ | |
| 164 | |
| 165 static void dc_callvm_argDouble_mips_n64_ellipsis(DCCallVM* in_self, DCdouble x) | |
| 166 { | |
| 167 dc_callvm_argLongLong_mips_n64(in_self, * ( (DClonglong*) &x ) ); | |
| 168 } | |
| 169 | |
| 170 static void dc_callvm_argFloat_mips_n64_ellipsis(DCCallVM* in_self, DCfloat x) | |
| 171 { | |
| 172 dc_callvm_argDouble_mips_n64_ellipsis(in_self, (DCdouble) x ); | |
| 173 } | |
| 174 | |
| 175 | |
| 176 /* Call. */ | |
| 177 | |
| 178 void dc_callvm_call_mips_n64(DCCallVM* in_self, DCpointer target) | |
| 179 { | |
| 180 DCCallVM_mips_n64* self = (DCCallVM_mips_n64*)in_self; | |
| 181 /* at minimum provide 16-bytes | |
|
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182 which hold the first four integer register as spill area |
| 0 | 183 and are automatically loaded to $4-$7 |
| 184 */ | |
| 185 size_t size = DC_MAX(16, ( ( (unsigned) dcVecSize(&self->mVecHead) ) +7UL ) & (-8UL) ); | |
| 186 dcCall_mips_n64(target, &self->mRegData, size, dcVecData(&self->mVecHead)); | |
| 187 } | |
| 188 | |
| 189 static void dc_callvm_mode_mips_n64(DCCallVM* in_self,DCint mode); | |
| 190 | |
| 191 DCCallVM_vt gVT_mips_n64 = | |
| 192 { | |
| 193 &dc_callvm_free_mips_n64 | |
| 194 , &dc_callvm_reset_mips_n64 | |
| 195 , &dc_callvm_mode_mips_n64 | |
| 196 , &dc_callvm_argBool_mips_n64 | |
| 197 , &dc_callvm_argChar_mips_n64 | |
|
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198 , &dc_callvm_argShort_mips_n64 |
| 0 | 199 , &dc_callvm_argInt_mips_n64 |
| 200 , &dc_callvm_argLong_mips_n64 | |
| 201 , &dc_callvm_argLongLong_mips_n64 | |
| 202 , &dc_callvm_argFloat_mips_n64 | |
| 203 , &dc_callvm_argDouble_mips_n64 | |
| 204 , &dc_callvm_argPointer_mips_n64 | |
| 205 , NULL /* argStruct */ | |
| 206 , (DCvoidvmfunc*) &dc_callvm_call_mips_n64 | |
| 207 , (DCboolvmfunc*) &dc_callvm_call_mips_n64 | |
| 208 , (DCcharvmfunc*) &dc_callvm_call_mips_n64 | |
| 209 , (DCshortvmfunc*) &dc_callvm_call_mips_n64 | |
| 210 , (DCintvmfunc*) &dc_callvm_call_mips_n64 | |
| 211 , (DClongvmfunc*) &dc_callvm_call_mips_n64 | |
| 212 , (DClonglongvmfunc*) &dc_callvm_call_mips_n64 | |
| 213 , (DCfloatvmfunc*) &dc_callvm_call_mips_n64 | |
| 214 , (DCdoublevmfunc*) &dc_callvm_call_mips_n64 | |
| 215 , (DCpointervmfunc*) &dc_callvm_call_mips_n64 | |
| 216 , NULL /* callStruct */ | |
| 217 }; | |
| 218 | |
| 219 DCCallVM_vt gVT_mips_n64_ellipsis = | |
| 220 { | |
| 221 &dc_callvm_free_mips_n64 | |
| 222 , &dc_callvm_reset_mips_n64 | |
| 223 , &dc_callvm_mode_mips_n64 | |
| 224 , &dc_callvm_argBool_mips_n64 | |
| 225 , &dc_callvm_argChar_mips_n64 | |
| 226 , &dc_callvm_argShort_mips_n64 | |
| 227 , &dc_callvm_argInt_mips_n64 | |
| 228 , &dc_callvm_argLong_mips_n64 | |
| 229 , &dc_callvm_argLongLong_mips_n64 | |
| 230 , &dc_callvm_argFloat_mips_n64_ellipsis | |
| 231 , &dc_callvm_argDouble_mips_n64_ellipsis | |
| 232 , &dc_callvm_argPointer_mips_n64 | |
| 233 , NULL /* argStruct */ | |
| 234 , (DCvoidvmfunc*) &dc_callvm_call_mips_n64 | |
| 235 , (DCboolvmfunc*) &dc_callvm_call_mips_n64 | |
| 236 , (DCcharvmfunc*) &dc_callvm_call_mips_n64 | |
| 237 , (DCshortvmfunc*) &dc_callvm_call_mips_n64 | |
| 238 , (DCintvmfunc*) &dc_callvm_call_mips_n64 | |
| 239 , (DClongvmfunc*) &dc_callvm_call_mips_n64 | |
| 240 , (DClonglongvmfunc*) &dc_callvm_call_mips_n64 | |
| 241 , (DCfloatvmfunc*) &dc_callvm_call_mips_n64 | |
| 242 , (DCdoublevmfunc*) &dc_callvm_call_mips_n64 | |
| 243 , (DCpointervmfunc*) &dc_callvm_call_mips_n64 | |
| 244 , NULL /* callStruct */ | |
| 245 }; | |
| 246 | |
| 84 | 247 static void dc_callvm_mode_mips_n64(DCCallVM* in_self, DCint mode) |
| 0 | 248 { |
| 84 | 249 DCCallVM_mips_n64* self = (DCCallVM_mips_n64*)in_self; |
| 250 DCCallVM_vt* vt; | |
| 251 | |
| 0 | 252 switch(mode) { |
| 253 case DC_CALL_C_DEFAULT: | |
| 84 | 254 case DC_CALL_C_MIPS64_N64: |
|
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255 case DC_CALL_C_ELLIPSIS: |
| 84 | 256 vt = &gVT_mips_n64; |
| 0 | 257 break; |
| 84 | 258 case DC_CALL_C_ELLIPSIS_VARARGS: |
| 259 vt = &gVT_mips_n64_ellipsis; | |
| 0 | 260 break; |
| 261 default: | |
|
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262 self->mInterface.mError = DC_ERROR_UNSUPPORTED_MODE; |
| 84 | 263 return; |
| 0 | 264 } |
| 84 | 265 dc_callvm_base_init(&self->mInterface, vt); |
| 0 | 266 } |
| 267 | |
| 84 | 268 /* Public API. */ |
| 269 DCCallVM* dcNewCallVM(DCsize size) | |
| 0 | 270 { |
| 84 | 271 DCCallVM_mips_n64* p = (DCCallVM_mips_n64*)dcAllocMem(sizeof(DCCallVM_mips_n64)+size); |
| 272 | |
| 273 dc_callvm_mode_mips_n64((DCCallVM*)p, DC_CALL_C_DEFAULT); | |
| 274 | |
| 275 dcVecInit(&p->mVecHead, size); | |
| 276 dc_callvm_reset_mips_n64((DCCallVM*)p); | |
| 277 | |
| 278 return (DCCallVM*)p; | |
| 0 | 279 } |
| 280 |