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author | Jeffrey Wilcke <geffobscura@gmail.com> | 2015-08-30 16:19:10 +0800 |
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committer | Jeffrey Wilcke <geffobscura@gmail.com> | 2015-10-04 07:13:54 +0800 |
commit | 361082ec4b942aea7c01fcb1be1782cb68b6fe3a (patch) | |
tree | d3ed9276cc61d314a6de14de1a61ea2c2d9a70b2 /core/vm/doc.go | |
parent | f7a71996fbbe9cea4445600ffa3c232a6cf42803 (diff) | |
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cmd/evm, core/vm, test: refactored VM and core
* Moved `vm.Transfer` to `core` package and changed execution to call
`env.Transfer` instead of `core.Transfer` directly.
* core/vm: byte code VM moved to jump table instead of switch
* Moved `vm.Transfer` to `core` package and changed execution to call
`env.Transfer` instead of `core.Transfer` directly.
* Byte code VM now shares the same code as the JITVM
* Renamed Context to Contract
* Changed initialiser of state transition & unexported methods
* Removed the Execution object and refactor `Call`, `CallCode` &
`Create` in to their own functions instead of being methods.
* Removed the hard dep on the state for the VM. The VM now
depends on a Database interface returned by the environment. In the
process the core now depends less on the statedb by usage of the env
* Moved `Log` from package `core/state` to package `core/vm`.
Diffstat (limited to 'core/vm/doc.go')
-rw-r--r-- | core/vm/doc.go | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/core/vm/doc.go b/core/vm/doc.go new file mode 100644 index 000000000..4deb7761d --- /dev/null +++ b/core/vm/doc.go @@ -0,0 +1,32 @@ +// Copyright 2014 The go-ethereum Authors +// This file is part of the go-ethereum library. +// +// The go-ethereum library is free software: you can redistribute it and/or modify +// it under the terms of the GNU Lesser General Public License as published by +// the Free Software Foundation, either version 3 of the License, or +// (at your option) any later version. +// +// The go-ethereum library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public License +// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>. + +/* +Package vm implements the Ethereum Virtual Machine. + +The vm package implements two EVMs, a byte code VM and a JIT VM. The BC +(Byte Code) VM loops over a set of bytes and executes them according to a set +of rules defined in the Ethereum yellow paper. When the BC VM is invokes it +invokes the JIT VM in a seperate goroutine and compiles the byte code in JIT +instructions. + +The JIT VM, when invoked, loops around a set of pre-defined instructions until +it either runs of gas, causes an internel error, returns or stops. At a later +stage the JIT VM will see some additional features that will cause sets of +instructions to be compiled down to segments. Segments are sets of instructions +that can be ran in one go saving precious time during execution. +*/ +package vm |