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The Mindustry Logic ISA (mISA, "miss-uh") Manual

Revision 2 (2021/II/12)

This document describes an ISA capable of being translated into mlog interpretable code. This will also be a good target architecture for any compilers, and a decent ISA for message block (blocks containing up to 220 characters) outputs.

As I (router) am unable to describe the hardware's exact requirements to run such code due to lack of experience with hardware engineering, I will define the minimum criteria for interpreting mISA here.

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Miho’s tech test

First of all...

Well done on completing the bootcamp! I'm proud of you & glad you had a great time.

The project looks pretty good for a first tech test ;) You should be proud of yourself too!

Hopefully below feedback is useful... happy to jump on a call to discuss if you want too :)

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// converts 32-bits positive integer to 4-bytes little endian
void to4li(unsigned long int const value, char * const buffer)
{
	buffer[0] = value >> 8 * 0;
	buffer[1] = value >> 8 * 1;
	buffer[2] = value >> 8 * 2;
	buffer[3] = value >> 8 * 3;
}

// converts 16-bits positive integer to 2-bytes little endian

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#if BYTE_ORDER == __ORDER_BIG_ENDIAN__

//Host byte order to network byte order (at compile time)
#define HTONS(value) (value)
#define HTONL(value) (value)

//Network byte order to host byte order (at compile time)
#define NTOHS(value) (value)
#define NTOHL(value) (value)

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diff --git a/src/emu/device.h b/src/emu/device.h
index df101d9..a20d341 100644
--- a/src/emu/device.h
+++ b/src/emu/device.h
@@ -377,9 +377,10 @@ protected:
 		virtual ~shared_ptr_finder() { if (m_allocated) global_free(m_target); }
 
 		// operators to make use transparent
-		operator _PointerType *() { return m_target; }
 		operator _PointerType *() const { return m_target; }

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Run on (32 X 2500 MHz CPU s)
CPU Caches:
  L1 Data 32K (x32)
  L1 Instruction 32K (x32)
  L2 Unified 256K (x32)
  L3 Unified 25600K (x32)
--------------------------------------------------------------------------------------------------------------
Benchmark                                                                       Time           CPU Iterations
--------------------------------------------------------------------------------------------------------------
MicroBenchmarkBasicFixture/BM_InsertEmptyTableWithConstraint/1/1        182574332 ns  182573160 ns          4

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prerequisites

• Compile the program in gcc with debug symbols enabled (-g)
• Do NOT strip the binary
• To generate assembly code using gcc use the -S option: gcc -S hello.c

utilities

objdump

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/* C programming source code to convert either binary to decimal or decimal to binary according to data entered by user. */
/* From http://www.programiz.com/ */

#include <stdio.h>
#include <math.h>
int binary_decimal(int n);
int decimal_binary(int n);
int main()
{
   int n;

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#include <libpirate/primitives.h>
#include <linux/limits.h>
#include <stdlib.h>
#include <string.h>

#include "gaps_resources.h"
// ^ declares resource and resource_parameter structs, as well as communication
// functions gaps_request_resource() and gaps_signal_failure()

extern struct gaps_resource *__gaps_channel_gaps_resources;

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  CXX   i386-s2e-softmmu/tcg/tcg-llvm.o
In file included from /home/hamlinb/netrecon/s2e/s2e/qemu/tcg/tcg-llvm.cpp:72:
In file included from /home/hamlinb/netrecon/s2e/build/llvm-3.2.src/include/llvm/DerivedTypes.h:21:
In file included from /home/hamlinb/netrecon/s2e/build/llvm-3.2.src/include/llvm/Type.h:18:
In file included from /home/hamlinb/netrecon/s2e/build/llvm-3.2.src/include/llvm/Support/Casting.h:18:
In file included from /home/hamlinb/netrecon/s2e/build/llvm-3.2.src/include/llvm/Support/type_traits.h:20:
In file included from /home/hamlinb/netrecon/s2e/build/llvm-release/include/llvm/Support/DataTypes.h:37:
In file included from /usr/lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/cmath:40:
/usr/include/bits/c++config.h:218:10: error: expected unqualified-id
  inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { }