Mercurial > pub > dyncall > dyncall
view dyncall/dyncall_callvm_mips_eabi.c @ 27:523c45dfa8fb
- refactored arm calling conventions' callvm code, so that the code that keeps
the caller from overwriting the return value on some platforms also works on
OpenBSD (before we casted the function pointer to have long long as return
type, to hint the caller that there is one, but that triggers an intentional
SIGABRT on OpenBSD for security reasons; now the decl reflects this, directly)
author | cslag |
---|---|
date | Tue, 15 Sep 2015 12:48:52 +0200 |
parents | 3e629dc19168 |
children | 67961454902b |
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/* Package: dyncall Library: dyncall File: dyncall/dyncall_callvm_mips_eabi.c Description: Implementation of Call VM for mips "eabi" abi. 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_mips_eabi.h" #include "dyncall_alloc.h" static void dc_callvm_reset_mips_eabi(DCCallVM* in_self) { DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)in_self; dcVecReset(&self->mVecHead); self->mIntRegs = 0; self->mSingleRegs = 0; } static DCCallVM* dc_callvm_new_mips_eabi(DCCallVM_vt* vt, DCsize size) { /* Store at least 16 bytes (4 words) for internal spill area. Assembly code depends on it. */ DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)dcAllocMem(sizeof(DCCallVM_mips_eabi)+size+16); dc_callvm_base_init(&self->mInterface, vt); dcVecInit(&self->mVecHead, size); dc_callvm_reset_mips_eabi( (DCCallVM*) self ); return (DCCallVM*)self; } static void dc_callvm_free_mips_eabi(DCCallVM* in_self) { dcFreeMem(in_self); } static void dc_callvm_mode_mips_eabi(DCCallVM* in_self,DCint mode) { switch(mode) { case DC_CALL_C_DEFAULT: case DC_CALL_C_ELLIPSIS: case DC_CALL_C_MIPS32_EABI: break; default: in_self->mError = DC_ERROR_UNSUPPORTED_MODE; return; } } /* arg int -- fillup integer register file OR push on stack */ static void dc_callvm_argInt_mips_eabi(DCCallVM* in_self, DCint i) { DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)in_self; /* fillup integer register file */ if (self->mIntRegs < 8) self->mRegData.mIntData[self->mIntRegs++] = i; else dcVecAppend(&self->mVecHead, &i, sizeof(DCint)); } static void dc_callvm_argPointer_mips_eabi(DCCallVM* in_self, DCpointer x) { dc_callvm_argInt_mips_eabi(in_self, * (DCint*) &x ); } static void dc_callvm_argBool_mips_eabi(DCCallVM* in_self, DCbool x) { dc_callvm_argInt_mips_eabi(in_self, (DCint)x); } static void dc_callvm_argChar_mips_eabi(DCCallVM* in_self, DCchar x) { dc_callvm_argInt_mips_eabi(in_self, (DCint)x); } static void dc_callvm_argShort_mips_eabi(DCCallVM* in_self, DCshort x) { dc_callvm_argInt_mips_eabi(in_self, (DCint)x); } static void dc_callvm_argLong_mips_eabi(DCCallVM* in_self, DClong x) { dc_callvm_argInt_mips_eabi(in_self, (DCint)x); } static void dc_callvm_argLongLong_mips_eabi(DCCallVM* in_self, DClonglong Lv) { DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)in_self; if (self->mIntRegs < 7) { DCint* p = (DCint*) &Lv; /* skip odd register (align 64 bit) */ self->mIntRegs += self->mIntRegs & 1; self->mRegData.mIntData[self->mIntRegs++] = p[0]; self->mRegData.mIntData[self->mIntRegs++] = p[1]; } else { self->mIntRegs = 8; /* 64 bit values need to be aligned on 8 byte boundaries */ dcVecSkip(&self->mVecHead, dcVecSize(&self->mVecHead) & 4); dcVecAppend(&self->mVecHead, &Lv, sizeof(DClonglong)); } } static void dc_callvm_argFloat_mips_eabi(DCCallVM* in_self, DCfloat x) { DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)in_self; if (self->mSingleRegs < 8) { self->mRegData.mSingleData[self->mSingleRegs++] = x; } else { dcVecAppend(&self->mVecHead, &x, sizeof(DCfloat) ); } } static void dc_callvm_argDouble_mips_eabi(DCCallVM* in_self, DCdouble x) { DClonglong* p = (DClonglong*) &x; dc_callvm_argLongLong_mips_eabi(in_self, *p); } /* Call. */ void dc_callvm_call_mips_eabi(DCCallVM* in_self, DCpointer target) { DCCallVM_mips_eabi* self = (DCCallVM_mips_eabi*)in_self; dcCall_mips_eabi(target, &self->mRegData, dcVecSize(&self->mVecHead), dcVecData(&self->mVecHead)); } DCCallVM_vt gVT_mips_eabi = { &dc_callvm_free_mips_eabi , &dc_callvm_reset_mips_eabi , &dc_callvm_mode_mips_eabi , &dc_callvm_argBool_mips_eabi , &dc_callvm_argChar_mips_eabi , &dc_callvm_argShort_mips_eabi , &dc_callvm_argInt_mips_eabi , &dc_callvm_argLong_mips_eabi , &dc_callvm_argLongLong_mips_eabi , &dc_callvm_argFloat_mips_eabi , &dc_callvm_argDouble_mips_eabi , &dc_callvm_argPointer_mips_eabi , NULL /* argStruct */ , (DCvoidvmfunc*) &dc_callvm_call_mips_eabi , (DCboolvmfunc*) &dc_callvm_call_mips_eabi , (DCcharvmfunc*) &dc_callvm_call_mips_eabi , (DCshortvmfunc*) &dc_callvm_call_mips_eabi , (DCintvmfunc*) &dc_callvm_call_mips_eabi , (DClongvmfunc*) &dc_callvm_call_mips_eabi , (DClonglongvmfunc*) &dc_callvm_call_mips_eabi , (DCfloatvmfunc*) &dc_callvm_call_mips_eabi , (DCdoublevmfunc*) &dc_callvm_call_mips_eabi , (DCpointervmfunc*) &dc_callvm_call_mips_eabi , NULL /* callStruct */ }; DCCallVM* dcNewCallVM_mips_eabi(DCsize size) { return dc_callvm_new_mips_eabi(&gVT_mips_eabi, size); } DCCallVM* dcNewCallVM(DCsize size) { return dcNewCallVM_mips_eabi(size); }