Mercurial > pub > dyncall > dyncall
diff dyncall/dyncall_callvm_arm32_arm_armhf.c @ 0:3e629dc19168
initial from svn dyncall-1745
author | Daniel Adler |
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date | Thu, 19 Mar 2015 22:24:28 +0100 |
parents | |
children | f01895437921 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/dyncall/dyncall_callvm_arm32_arm_armhf.c Thu Mar 19 22:24:28 2015 +0100 @@ -0,0 +1,205 @@ +/* + + Package: dyncall + Library: dyncall + File: dyncall/dyncall_callvm_arm32_arm_armhf.c + Description: ARM 'armhf' ABI implementation + License: + + Copyright (c) 2007-2015 Daniel Adler <dadler@uni-goettingen.de>, + Tassilo Philipp <tphilipp@potion-studios.com> + + Permission to use, copy, modify, and distribute this software for any + purpose with or without fee is hereby granted, provided that the above + copyright notice and this permission notice appear in all copies. + + THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +*/ + + +#include "dyncall_callvm_arm32_arm_armhf.h" +#include "dyncall_alloc.h" + + +static DCCallVM* dc_callvm_new_arm32_armhf(DCCallVM_vt* vt, DCsize size) +{ + /* Store at least 16 bytes (4 words) for internal spill area. Assembly code depends on it. */ + DCCallVM_arm32_armhf* p = (DCCallVM_arm32_armhf*)dcAllocMem(sizeof(DCCallVM_arm32_armhf)+size+16); + dc_callvm_base_init(&p->mInterface, vt); + dcVecInit(&p->mVecHead, size); + p->i = 0; + p->s = 0; + p->d = 0; + return (DCCallVM*)p; +} + +static void mode(DCCallVM* in_self,DCint mode); + +static void deinit(DCCallVM* in_self) +{ + dcFreeMem(in_self); +} + + +static void reset(DCCallVM* in_p) +{ + DCCallVM_arm32_armhf* p = (DCCallVM_arm32_armhf*)in_p; + p->i = 0; + p->s = 0; + p->d = 0; + dcVecResize(&p->mVecHead, 16); +} + +static void a_int(DCCallVM* in_self, DCint x) +{ + DCCallVM_arm32_armhf* p = (DCCallVM_arm32_armhf*)in_self; + if (p->i < 16) { + * (DCint*) dcVecAt(&p->mVecHead, p->i) = x; + p->i += 4; + } else { + dcVecAppend(&p->mVecHead, &x, sizeof(DCint)); + } +} + +static void a_bool (DCCallVM* in_self, DCbool x) { a_int(in_self, (DCint)x); } +static void a_char (DCCallVM* in_self, DCchar x) { a_int(in_self, x); } +static void a_short (DCCallVM* in_self, DCshort x) { a_int(in_self, x); } +static void a_long (DCCallVM* in_self, DClong x) { a_int(in_self, x); } +static void a_longlong(DCCallVM* in_self, DClonglong x) +{ + DCCallVM_arm32_armhf* p = (DCCallVM_arm32_armhf*)in_self; + + p->i = (p->i+4) & -8; + if (p->i < 16) { + * (DClonglong*) dcVecAt(&p->mVecHead, p->i) = x; + p->i += 8; + } else { + /* 64 bit values need to be aligned on 8 byte boundaries */ + dcVecSkip(&p->mVecHead, dcVecSize(&p->mVecHead) & 4); + dcVecAppend(&p->mVecHead, &x, sizeof(DClonglong)); + } +} +static void a_pointer(DCCallVM* in_p, DCpointer x) { a_int(in_p, (DCint) x ); } + +static void a_float(DCCallVM* in_p, DCfloat x) +{ + DCCallVM_arm32_armhf* p = (DCCallVM_arm32_armhf*)in_p; + if (p->s < 16) { + p->S[p->s++] = x; + if (p->d < p->s) { + p->d = (p->s+1) & ~(1U); + } else { + p->s = p->d; + } + } else { + dcVecAppend(&p->mVecHead, &x, sizeof(DCfloat)); + } +} + +static void a_double(DCCallVM* in_p, DCdouble x) +{ + DCCallVM_arm32_armhf* p = (DCCallVM_arm32_armhf*)in_p; + if (p->d < 16) { + * (double*) &p->S[p->d] = x; + p->d += 2; + if (!(p->s & 1)) { + /* if s is even it always equals d. + otherwise, s points to an odd float register. + */ + p->s = p->d; + } + } else { + p->s = 16; + union { + DCdouble d; + DCchar b[8]; + } v; // ,w; + v.d = x; +#if 0 + w.b[0] = v.b[7]; + w.b[1] = v.b[6]; + w.b[2] = v.b[5]; + w.b[3] = v.b[4]; + w.b[4] = v.b[3]; + w.b[5] = v.b[2]; + w.b[6] = v.b[1]; + w.b[7] = v.b[0]; +#endif + /* 64 bit values need to be aligned on 8 byte boundaries */ + dcVecSkip(&p->mVecHead, dcVecSize(&p->mVecHead) & 4); + dcVecAppend(&p->mVecHead, &v.b[0], sizeof(DCdouble)); + } +} + +void call(DCCallVM* in_p, DCpointer target) +{ + DCCallVM_arm32_armhf* p = (DCCallVM_arm32_armhf*)in_p; + dcCall_arm32_armhf(target, dcVecData(&p->mVecHead), dcVecSize(&p->mVecHead), &p->S[0]); +} + +DCCallVM_vt vt_armhf = +{ + &deinit +, &reset +, &mode +, &a_bool +, &a_char +, &a_short +, &a_int +, &a_long +, &a_longlong +, &a_float +, &a_double +, &a_pointer +, NULL /* argStruct */ +, (DCvoidvmfunc*) &call +, (DCboolvmfunc*) &call +, (DCcharvmfunc*) &call +, (DCshortvmfunc*) &call +, (DCintvmfunc*) &call +, (DClongvmfunc*) &call +, (DClonglongvmfunc*) &call +, (DCfloatvmfunc*) &call +, (DCdoublevmfunc*) &call +, (DCpointervmfunc*) &call +, NULL /* callStruct */ +}; + +DCCallVM* dcNewCallVM(DCsize size) +{ +#if defined(DC__ABI_ARM_EABI) + return dc_callvm_new_arm32_arm(&eabi, size); +#elif defined(DC__ABI_ARM_HF) + return dc_callvm_new_arm32_armhf(&vt_armhf, size); +#elif defined(DC__ABI_ARM_OABI) + return dc_callvm_new_arm32_arm(&oabi, size); +#else +#error unknown ARM abi +#endif +} + +static void mode(DCCallVM* in_self,DCint mode) +{ + DCCallVM_arm32_armhf* self = (DCCallVM_arm32_armhf*) in_self; + DCCallVM_vt* vt; + switch(mode) { + case DC_CALL_C_DEFAULT: + case DC_CALL_C_ELLIPSIS: + case DC_CALL_C_ELLIPSIS_VARARGS: + case DC_CALL_C_ARM_ARMHF: + vt = &vt_armhf; + break; + default: + in_self->mError = DC_ERROR_UNSUPPORTED_MODE; + return; + } + self->mInterface.mVTpointer = vt; +} +