Mercurial > pub > dyncall > dyncall
view dyncallback/dyncall_args_arm32.c @ 288:8d9629a078e4 r1.0-RC3
- merged separate ToDo files, cleanups
author | Tassilo Philipp |
---|---|
date | Sat, 21 Apr 2018 15:01:42 +0200 |
parents | f5577f6bf97a |
children | 71c884e610f0 |
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/* Package: dyncall Library: dyncallback File: dyncallback/dyncall_args_arm32.c Description: Callback's Arguments VM - Implementation for ARM32 (ARM and THUMB mode) 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. */ #include "dyncall_args_arm32.h" static void arm_align_64(DCArgs* args) { /* Look at signature to see if current calling convention needs alignment */ /* or not (e.g. EABI has different alignment). If nothing specified, fall */ /* back to default behaviour for this platform. */ /* @@@ check signature string */ int sig = #if defined(DC__ABI_ARM_EABI) || defined(DC__ABI_ARM_HF) 0; /* EABI */ #else 1; /* ATPCS */ #endif if(sig == 0) { if(args->reg_count < 4) args->reg_count = (args->reg_count+1)&~1; if(args->reg_count >= 4 && (int)args->stack_ptr & 4) ++args->stack_ptr; } } static void* arm_word(DCArgs* args) { if(args->reg_count < 4) return &args->reg_data[args->reg_count++]; else return (void*)args->stack_ptr++; } static DCfloat arm_float(DCArgs* args) { #if defined(DC__ABI_ARM_HF) DCfloat f; if(args->freg_count < 16) { f = args->f[args->freg_count++]; /* if freg_count was odd, sync with dreg_count */ if(!(args->freg_count & 1) && (args->freg_count < args->dreg_count)) args->freg_count = args->dreg_count; return f; } #endif return *(DCfloat*)arm_word(args); } static DCdouble arm_double(DCArgs* args) { union { DCdouble d; DClong l[2]; } d; #if defined(DC__ABI_ARM_HF) if(args->dreg_count < args->freg_count) args->dreg_count = (args->freg_count+1)&0x1e; /* clear last bit, counter won't be higher than 16, anyways */ if(args->dreg_count < 16) { d.d = *(DCdouble*)&args->f[args->dreg_count]; args->dreg_count += 2; /* freg_count is either odd (pointing to a gap), or always the same as dreg_count */ if(!(args->freg_count & 1)) args->freg_count = args->dreg_count; return d.d; } args->freg_count = 16; /* fp registers all full - need to use stack now: stop filling gaps for single precision, also */ #endif arm_align_64(args); d.l[0] = *(DClong*)arm_word(args); d.l[1] = *(DClong*)arm_word(args); return d.d; } static DClonglong arm_longlong(DCArgs* args) { union { DClonglong ll; DClong l[2]; } ll; arm_align_64(args); ll.l[0] = *(DClong*)arm_word(args); ll.l[1] = *(DClong*)arm_word(args); return ll.ll; } // ---------------------------------------------------------------------------- // C API implementation: // base operations: DClonglong dcbArgLongLong (DCArgs* p) { return arm_longlong(p); } DClong dcbArgLong (DCArgs* p) { return *(DClong*)arm_word(p); } DCint dcbArgInt (DCArgs* p) { return (DCint) dcbArgLong(p); } DCchar dcbArgChar (DCArgs* p) { return (DCchar) dcbArgLong(p); } DCshort dcbArgShort (DCArgs* p) { return (DCshort) dcbArgLong(p); } DCbool dcbArgBool (DCArgs* p) { return (dcbArgLong(p) == 0) ? 0 : 1; } DCuint dcbArgUInt (DCArgs* p) { return (DCuint) dcbArgInt(p); } DCuchar dcbArgUChar (DCArgs* p) { return (DCuchar) dcbArgChar(p); } DCushort dcbArgUShort (DCArgs* p) { return (DCushort) dcbArgShort(p); } DCulong dcbArgULong (DCArgs* p) { return (DCulong) dcbArgLong(p); } DCulonglong dcbArgULongLong(DCArgs* p) { return (DCulonglong)dcbArgLongLong(p); } DCpointer dcbArgPointer (DCArgs* p) { return (DCpointer) dcbArgLong(p); } DCdouble dcbArgDouble (DCArgs* p) { return arm_double(p); } DCfloat dcbArgFloat (DCArgs* p) { return arm_float(p); }