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| author | Alex Beregszaszi <alex@rtfs.hu> | 2017-11-24 11:06:42 +0800 |
|---|---|---|
| committer | Alex Beregszaszi <alex@rtfs.hu> | 2018-02-27 03:19:26 +0800 |
| commit | 64eaff64200d166bdd48f81bceefec9bc83db72f (patch) | |
| tree | b3bc533f61d33222ff5d6581e998a6ec8223675e /docs/assembly.rst | |
| parent | cd2d893634b490236ef29fe857556bde4901a74d (diff) | |
| download | dexon-solidity-64eaff64200d166bdd48f81bceefec9bc83db72f.tar.gz dexon-solidity-64eaff64200d166bdd48f81bceefec9bc83db72f.tar.zst dexon-solidity-64eaff64200d166bdd48f81bceefec9bc83db72f.zip | |
Random documentation updates (assembly, faq)
Diffstat (limited to 'docs/assembly.rst')
| -rw-r--r-- | docs/assembly.rst | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/docs/assembly.rst b/docs/assembly.rst index 02522469..35484ad4 100644 --- a/docs/assembly.rst +++ b/docs/assembly.rst @@ -162,6 +162,8 @@ The opcodes ``pushi`` and ``jumpdest`` cannot be used directly. In the grammar, opcodes are represented as pre-defined identifiers. +-------------------------+------+-----------------------------------------------------------------+ +| Instruction | | Explanation | ++=========================+======+=================================================================+ | stop + `-` | stop execution, identical to return(0,0) | +-------------------------+------+-----------------------------------------------------------------+ | add(x, y) | | x + y | @@ -228,7 +230,7 @@ In the grammar, opcodes are represented as pre-defined identifiers. +-------------------------+------+-----------------------------------------------------------------+ | mstore(p, v) | `-` | mem[p..(p+32)) := v | +-------------------------+------+-----------------------------------------------------------------+ -| mstore8(p, v) | `-` | mem[p] := v & 0xff - only modifies a single byte | +| mstore8(p, v) | `-` | mem[p] := v & 0xff (only modifies a single byte) | +-------------------------+------+-----------------------------------------------------------------+ | sload(p) | | storage[p] | +-------------------------+------+-----------------------------------------------------------------+ @@ -242,7 +244,7 @@ In the grammar, opcodes are represented as pre-defined identifiers. +-------------------------+------+-----------------------------------------------------------------+ | balance(a) | | wei balance at address a | +-------------------------+------+-----------------------------------------------------------------+ -| caller | | call sender (excluding delegatecall) | +| caller | | call sender (excluding ``delegatecall``) | +-------------------------+------+-----------------------------------------------------------------+ | callvalue | | wei sent together with the current call | +-------------------------+------+-----------------------------------------------------------------+ @@ -276,13 +278,13 @@ In the grammar, opcodes are represented as pre-defined identifiers. | | | mem[out..(out+outsize)) returning 0 on error (eg. out of gas) | | | | and 1 on success | +-------------------------+------+-----------------------------------------------------------------+ -| callcode(g, a, v, in, | | identical to `call` but only use the code from a and stay | +| callcode(g, a, v, in, | | identical to ``call`` but only use the code from a and stay | | insize, out, outsize) | | in the context of the current contract otherwise | +-------------------------+------+-----------------------------------------------------------------+ -| delegatecall(g, a, in, | | identical to `callcode` but also keep ``caller`` | +| delegatecall(g, a, in, | | identical to ``callcode`` but also keep ``caller`` | | insize, out, outsize) | | and ``callvalue`` | +-------------------------+------+-----------------------------------------------------------------+ -| staticcall(g, a, in, | | identical to `call(g, a, 0, in, insize, out, outsize)` but do | +| staticcall(g, a, in, | | identical to ``call(g, a, 0, in, insize, out, outsize)`` but do | | insize, out, outsize) | | not allow state modifications | +-------------------------+------+-----------------------------------------------------------------+ | return(p, s) | `-` | end execution, return data mem[p..(p+s)) | @@ -727,7 +729,7 @@ The following assembly will be generated:: // function dispatcher switch div(calldataload(0), exp(2, 226)) case 0xb3de648b { - let (r) = f(calldataload(4)) + let r := f(calldataload(4)) let ret := $allocate(0x20) mstore(ret, r) return(ret, 0x20) |