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/* ========================================================================
(C) Copyright 2023 by Molly Rocket, Inc., All Rights Reserved.
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Please see https://computerenhance.com for more information
======================================================================== */
#define assert(...)
#include "sim86.h"
#include "sim86_instruction.h"
#include "sim86_instruction_table.h"
#include "sim86_memory.h"
#include "sim86_decode.h"
#include "sim86_instruction.cpp"
#include "sim86_instruction_table.cpp"
#include "sim86_memory.cpp"
#include "sim86_decode.cpp"
#include "sim86_text_table.cpp"
extern "C" u32 Sim86_GetVersion(void)
{
u32 Result = SIM86_VERSION;
return Result;
}
extern "C" void Sim86_Decode8086Instruction(u32 SourceSize, u8 *Source, instruction *Dest)
{
instruction_table Table = Get8086InstructionTable();
// NOTE(casey): The 8086 decoder requires the ability to read up to 15 bytes (the maximum
// allowable instruction size)
assert(Table.MaxInstructionByteCount == 15);
u8 GuardBuffer[16] = {};
if(SourceSize < Table.MaxInstructionByteCount)
{
// NOTE(casey): I replaced the memcpy here with a manual copy to make it easier for
// people compiling on things like WebAssembly who do not want to use Emscripten.
for(u32 I = 0; I < SourceSize; ++I)
{
GuardBuffer[I] = Source[I];
}
Source = GuardBuffer;
}
segmented_access At = FixedMemoryPow2(4, Source);
*Dest = DecodeInstruction(Table, At);
}
extern "C" char const *Sim86_RegisterNameFromOperand(register_access *RegAccess)
{
char const *Result = GetRegName(*RegAccess);
return Result;
}
extern "C" char const *Sim86_MnemonicFromOperationType(operation_type Type)
{
char const *Result = GetMnemonic(Type);
return Result;
}
extern "C" void Sim86_Get8086InstructionTable(instruction_table *Dest)
{
*Dest = Get8086InstructionTable();
}
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