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49 lines
2.0 KiB
C
49 lines
2.0 KiB
C
//
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// m3_api_defs.h
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//
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// Created by Volodymyr Shymanskyy on 12/20/19.
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// Copyright © 2019 Volodymyr Shymanskyy. All rights reserved.
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//
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#ifndef m3_api_defs_h
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#define m3_api_defs_h
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#include "m3_core.h"
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// TODO: perform bounds checks
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#define m3ApiOffsetToPtr(offset) (void*)((u8*)_mem + (u32)(offset))
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#define m3ApiPtrToOffset(ptr) (u32)((u8*)ptr - (u8*)_mem)
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#define m3ApiReturnType(TYPE) TYPE* raw_return = ((TYPE*) (_sp));
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#define m3ApiGetArg(TYPE, NAME) TYPE NAME = * ((TYPE *) (_sp++));
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#define m3ApiGetArgMem(TYPE, NAME) TYPE NAME = (TYPE)m3ApiOffsetToPtr(* ((u32 *) (_sp++)));
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#if d_m3SkipMemoryBoundsCheck
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# define m3ApiCheckMem(off, len)
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#else
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# define m3ApiCheckMem(off, len) { if (UNLIKELY(off == _mem || ((u64)(off) + (len)) > ((u64)(_mem)+runtime->memory.mallocated->length))) m3ApiTrap(m3Err_trapOutOfBoundsMemoryAccess); }
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#endif
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#define m3ApiRawFunction(NAME) const void * NAME (IM3Runtime runtime, IM3ImportContext _ctx, uint64_t * _sp, void * _mem)
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#define m3ApiReturn(VALUE) { *raw_return = (VALUE); return m3Err_none; }
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#define m3ApiTrap(VALUE) { return VALUE; }
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#define m3ApiSuccess() { return m3Err_none; }
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# if defined(M3_BIG_ENDIAN)
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# define m3ApiReadMem16(ptr) __builtin_bswap16((* (u16 *)(ptr)))
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# define m3ApiReadMem32(ptr) __builtin_bswap32((* (u32 *)(ptr)))
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# define m3ApiReadMem64(ptr) __builtin_bswap64((* (u64 *)(ptr)))
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# define m3ApiWriteMem16(ptr, val) { * (u16 *)(ptr) = __builtin_bswap16((val)); }
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# define m3ApiWriteMem32(ptr, val) { * (u32 *)(ptr) = __builtin_bswap32((val)); }
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# define m3ApiWriteMem64(ptr, val) { * (u64 *)(ptr) = __builtin_bswap64((val)); }
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# else
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# define m3ApiReadMem16(ptr) (* (u16 *)(ptr))
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# define m3ApiReadMem32(ptr) (* (u32 *)(ptr))
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# define m3ApiReadMem64(ptr) (* (u64 *)(ptr))
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# define m3ApiWriteMem16(ptr, val) { * (u16 *)(ptr) = (val); }
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# define m3ApiWriteMem32(ptr, val) { * (u32 *)(ptr) = (val); }
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# define m3ApiWriteMem64(ptr, val) { * (u64 *)(ptr) = (val); }
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# endif
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#endif // m3_api_defs_h
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