Mercurial > pub > dyncall > dyncall
view dyncall/dyncall_callvm_arm32_thumb.c @ 368:f28b7f4f5749
- removed some pseudo-op on non-darwin platforms to make clang's integrated assembler happy
author | Tassilo Philipp |
---|---|
date | Wed, 05 Aug 2020 15:50:49 +0200 |
parents | ad5f9803f52f |
children | 15698dc0cba3 |
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/* Package: dyncall Library: dyncall File: dyncall/dyncall_callvm_arm32_thumb.c Description: ARM 32-bit "thumb" ABI callvm implementation License: Copyright (c) 2007-2018 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. */ /* dyncall callvm for 32bit ARM32 family of processors SUPPORTED CALLING CONVENTIONS armthumbcall REVISION 2007/12/11 initial */ #include "dyncall_callvm_arm32_thumb.h" #include "dyncall_alloc.h" /* ** arm32 thumb mode calling convention calls ** ** - hybrid return-type call (bool ... pointer) ** ** Note the return type of this declaration is intentially of double-word size (despite ** the return value not being used in the code below). ** On some platforms (FreeBSD/arm, Nintendo DS, ...) the compiler generates cleanup code ** in the caller (dc_callvm_call_arm32_thumb) that reuses, thus overwrites r0 and r1. ** With this "hint", we preserve those registers by letting the compiler assume both ** registers are used for the return type. */ DClonglong dcCall_arm32_thumb(DCpointer target, DCpointer stackdata, DCsize size); static void dc_callvm_mode_arm32_thumb(DCCallVM* in_self,DCint mode); static void dc_callvm_free_arm32_thumb(DCCallVM* in_self) { dcFreeMem(in_self); } static void dc_callvm_reset_arm32_thumb(DCCallVM* in_self) { DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self; dcVecReset(&self->mVecHead); } static void dc_callvm_argInt_arm32_thumb(DCCallVM* in_self, DCint x) { DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self; dcVecAppend(&self->mVecHead, &x, sizeof(DCint)); } static void dc_callvm_argBool_arm32_thumb(DCCallVM* in_self, DCbool x) { dc_callvm_argInt_arm32_thumb(in_self, (DCint)x); } static void dc_callvm_argChar_arm32_thumb(DCCallVM* in_self, DCchar x) { dc_callvm_argInt_arm32_thumb(in_self, x); } static void dc_callvm_argShort_arm32_thumb(DCCallVM* in_self, DCshort x) { dc_callvm_argInt_arm32_thumb(in_self, x); } static void dc_callvm_argLong_arm32_thumb(DCCallVM* in_self, DClong x) { dc_callvm_argInt_arm32_thumb(in_self, x); } static void dc_callvm_argLongLong_arm32_thumb(DCCallVM* in_self, DClonglong x) { DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self; dcVecAppend(&self->mVecHead, &x, sizeof(DClonglong)); } static void dc_callvm_argLongLong_arm32_thumb_eabi(DCCallVM* in_self, DClonglong x) { DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self; /* 64 bit values need to be aligned on 8 byte boundaries */ dcVecSkip(&self->mVecHead, dcVecSize(&self->mVecHead) & 4); dcVecAppend(&self->mVecHead, &x, sizeof(DClonglong)); } static void dc_callvm_argFloat_arm32_thumb(DCCallVM* in_self, DCfloat x) { DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self; dcVecAppend(&self->mVecHead, &x, sizeof(DCfloat)); } static void dc_callvm_argDouble_arm32_thumb(DCCallVM* in_self, DCdouble x) { DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self; dcVecAppend(&self->mVecHead, &x, sizeof(DCdouble)); } static void dc_callvm_argDouble_arm32_thumb_eabi(DCCallVM* in_self, DCdouble x) { DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self; /* 64 bit values need to be aligned on 8 byte boundaries */ dcVecSkip(&self->mVecHead, dcVecSize(&self->mVecHead) & 4); dcVecAppend(&self->mVecHead, &x, sizeof(DCdouble)); } static void dc_callvm_argPointer_arm32_thumb(DCCallVM* in_self, DCpointer x) { DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self; dcVecAppend(&self->mVecHead, &x, sizeof(DCpointer)); } /* Call. */ void dc_callvm_call_arm32_thumb(DCCallVM* in_self, DCpointer target) { DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self; dcCall_arm32_thumb(target, dcVecData(&self->mVecHead), dcVecSize(&self->mVecHead)); } DCCallVM_vt gVT_arm32_thumb = { &dc_callvm_free_arm32_thumb , &dc_callvm_reset_arm32_thumb , &dc_callvm_mode_arm32_thumb , &dc_callvm_argBool_arm32_thumb , &dc_callvm_argChar_arm32_thumb , &dc_callvm_argShort_arm32_thumb , &dc_callvm_argInt_arm32_thumb , &dc_callvm_argLong_arm32_thumb , &dc_callvm_argLongLong_arm32_thumb , &dc_callvm_argFloat_arm32_thumb , &dc_callvm_argDouble_arm32_thumb , &dc_callvm_argPointer_arm32_thumb , NULL /* argStruct */ , (DCvoidvmfunc*) &dc_callvm_call_arm32_thumb , (DCboolvmfunc*) &dc_callvm_call_arm32_thumb , (DCcharvmfunc*) &dc_callvm_call_arm32_thumb , (DCshortvmfunc*) &dc_callvm_call_arm32_thumb , (DCintvmfunc*) &dc_callvm_call_arm32_thumb , (DClongvmfunc*) &dc_callvm_call_arm32_thumb , (DClonglongvmfunc*) &dc_callvm_call_arm32_thumb , (DCfloatvmfunc*) &dc_callvm_call_arm32_thumb , (DCdoublevmfunc*) &dc_callvm_call_arm32_thumb , (DCpointervmfunc*) &dc_callvm_call_arm32_thumb , NULL /* callStruct */ }; DCCallVM_vt gVT_arm32_thumb_eabi = { &dc_callvm_free_arm32_thumb , &dc_callvm_reset_arm32_thumb , &dc_callvm_mode_arm32_thumb , &dc_callvm_argBool_arm32_thumb , &dc_callvm_argChar_arm32_thumb , &dc_callvm_argShort_arm32_thumb , &dc_callvm_argInt_arm32_thumb , &dc_callvm_argLong_arm32_thumb , &dc_callvm_argLongLong_arm32_thumb_eabi , &dc_callvm_argFloat_arm32_thumb , &dc_callvm_argDouble_arm32_thumb_eabi , &dc_callvm_argPointer_arm32_thumb , NULL /* argStruct */ , (DCvoidvmfunc*) &dc_callvm_call_arm32_thumb , (DCboolvmfunc*) &dc_callvm_call_arm32_thumb , (DCcharvmfunc*) &dc_callvm_call_arm32_thumb , (DCshortvmfunc*) &dc_callvm_call_arm32_thumb , (DCintvmfunc*) &dc_callvm_call_arm32_thumb , (DClongvmfunc*) &dc_callvm_call_arm32_thumb , (DClonglongvmfunc*) &dc_callvm_call_arm32_thumb , (DCfloatvmfunc*) &dc_callvm_call_arm32_thumb , (DCdoublevmfunc*) &dc_callvm_call_arm32_thumb , (DCpointervmfunc*) &dc_callvm_call_arm32_thumb , NULL /* callStruct */ }; static void dc_callvm_mode_arm32_thumb(DCCallVM* in_self, DCint mode) { DCCallVM_arm32_thumb* self = (DCCallVM_arm32_thumb*)in_self; DCCallVM_vt* vt; switch(mode) { case DC_CALL_C_ELLIPSIS: case DC_CALL_C_ELLIPSIS_VARARGS: /* Check OS if we need EABI as default. */ #if defined(DC__ABI_ARM_EABI) case DC_CALL_C_DEFAULT: vt = &gVT_arm32_thumb_eabi; break; #else case DC_CALL_C_DEFAULT: vt = &gVT_arm32_thumb; break; #endif case DC_CALL_C_ARM_THUMB: vt = &gVT_arm32_thumb; break; case DC_CALL_C_ARM_THUMB_EABI: vt = &gVT_arm32_thumb_eabi; break; default: self->mInterface.mError = DC_ERROR_UNSUPPORTED_MODE; return; } dc_callvm_base_init(&self->mInterface, vt); } /* Public API. */ DCCallVM* dcNewCallVM(DCsize size) { /* Store at least 16 bytes (4 words) for internal spill area. Assembly code depends on it. */ DCCallVM_arm32_thumb* p = (DCCallVM_arm32_thumb*)dcAllocMem(sizeof(DCCallVM_arm32_thumb)+size+16); dc_callvm_mode_arm32_thumb((DCCallVM*)p, DC_CALL_C_DEFAULT); dcVecInit(&p->mVecHead, size); return (DCCallVM*)p; }