Commit graph

7 commits

Author SHA1 Message Date
Roman Khimov
53a3b18652 vm: completely separate instruction read and execution phases
Make Context.Next() return both opcode and instruction parameter if any. This
simplifies some code and needed to deal with #295.
2019-10-04 16:13:39 +03:00
Roman Khimov
fc1075bf75 vm: protect PUSHDATA from short reads
Same thing done in a2a8981979 for PUSHBYTES,
failing to read the amount of bytes specified should lead to FAULT. Also
makes readUint16() and readUint32() panic as this is the behavior we want in
these cases. Add some tests along the way.
2019-09-11 12:35:37 +03:00
Roman Khimov
5bd666b786 vm: return NOP as current instruction for just loaded VM
Before:
NEO-GO-VM > loadgo h.go
READY: loaded 16 instructions
NEO-GO-VM > ip
instruction pointer at -1 (PUSH0)

After:
NEO-GO-VM > loadgo h.go
READY: loaded 16 instructions
NEO-GO-VM > ip
instruction pointer at -1 (NOP)

I think NOP is a little less scary.
2019-09-10 23:31:06 +03:00
Roman Khimov
33c512032f vm: switch from Opcode to Instruction
Which matches the changes done in neo-storm and also make this codebase closer
to the `dev` branch (that also uses Instruction).
2019-08-14 15:40:31 +03:00
Anthony De Meulemeester
941bd7e728
VM and compiler update (#63)
* renamed test folders and fixed bug where wrong jump labels would be exectuted for rewrite.

* Added support for Osize (len(string)) and factored out the array tests

* Added current instruction number to VM prompt if program is loaded.

* added support for unary expressions.

* updated README of and sorted the help commands

* updated readme of the compiler

* bumped version -> 0.39.0
2018-04-04 21:41:19 +02:00
Anthony De Meulemeester
69c3e645b6
VM improvements, tests + bugfixes (#61)
* changed vm commands to match more of the standard

* fixed Uint16 jmp bug in VM

* moved test to vm + fixed numnotequal bug

* fixed broken tests

* moved compiler tests to vm tests

* added basic for support + inc and dec stmts

* bumped version
2018-04-02 17:04:42 +02:00
Anthony De Meulemeester
931388b687
Cross platform virtual machine implementation (#60)
* Virtual machine for the NEO blockhain.

* fixed big.Int numeric operation pointer issue.

* added appcall

* Added README for vm package.

* removed main.go

* started VM cli (prompt) integration

* added support for printing the stack.

* moved cli to vm package

* fixed vet errors

* updated readme

* added more test for VM and fixed some edge cases.

* bumped version -> 0.37.0
2018-03-30 18:15:06 +02:00