233 lines
8.0 KiB
C++
233 lines
8.0 KiB
C++
#pragma once
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#include "nasal.h"
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#include "nasal_builtin.h"
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#include <iostream>
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enum op_code_type:u8 {
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op_exit, // stop the virtual machine
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op_intg, // global scope size, set stack top
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op_intl, // local scope size
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op_loadg, // load global value
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op_loadl, // load local value
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op_loadu, // load upvalue
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op_pnum, // push constant number to the stack
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op_pnil, // push constant nil to the stack
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op_pstr, // push constant string to the stack
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op_newv, // push new vector with initial values from stack
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op_newh, // push new hash to the stack
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op_newf, // push new function to the stack
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op_happ, // hash append
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op_para, // normal parameter
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op_deft, // default parameter
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op_dyn, // dynamic parameter
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op_lnot, // ! logical negation
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op_usub, // - negation
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op_bnot, // ~ bitwise not static_cast<i32>
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op_btor, // | bitwise or
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op_btxor, // ^ bitwise xor
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op_btand, // & bitwise and
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op_add, // +
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op_sub, // -
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op_mul, // *
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op_div, // /
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op_lnk, // ~
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op_addc, // + const
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op_subc, // - const
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op_mulc, // * const
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op_divc, // / const
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op_lnkc, // ~ const
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op_addeq, // += maybe pop stack top
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op_subeq, // -= maybe pop stack top
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op_muleq, // *= maybe pop stack top
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op_diveq, // /= maybe pop stack top
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op_lnkeq, // ~= maybe pop stack top
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op_btandeq,// &= maybe pop stack top
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op_btoreq, // |= maybe pop stack top
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op_btxoreq,// ^= maybe pop stack top
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op_addeqc, // += const don't pop stack top
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op_subeqc, // -= const don't pop stack top
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op_muleqc, // *= const don't pop stack top
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op_diveqc, // /= const don't pop stack top
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op_lnkeqc, // ~= const don't pop stack top
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op_addecp, // += const and pop stack top
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op_subecp, // -= const and pop stack top
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op_mulecp, // *= const and pop stack top
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op_divecp, // /= const and pop stack top
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op_lnkecp, // ~= concat const string and pop stack top
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op_meq, // = maybe pop stack top
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op_eq, // ==
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op_neq, // !=
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op_less, // <
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op_leq, // <=
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op_grt, // >
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op_geq, // >=
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op_lessc, // < const
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op_leqc, // <= const
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op_grtc, // > const
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op_geqc, // >= const
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op_pop, // pop a value out of stack top
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op_jmp, // jump absolute address with no condition
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op_jt, // used in operator and/or,jmp when condition is true and DO NOT POP
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op_jf, // used in conditional/loop,jmp when condition is false and POP STACK
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op_cnt, // add counter for forindex/foreach
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op_findex, // index counter on the top of forindex_stack plus 1
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op_feach, // index counter on the top of forindex_stack plus 1 and get the value in vector
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op_callg, // get value in global scope
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op_calll, // get value in local scope
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op_upval, // get value in closure, high 16 as the index of upval, low 16 as the index of local
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op_callv, // call vec[index]
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op_callvi, // call vec[immediate] (used in multi-assign/multi-define)
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op_callh, // call hash.label
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op_callfv, // call function(vector as parameters)
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op_callfh, // call function(hash as parameters)
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op_callb, // call builtin-function
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op_slcbeg, // begin of slice like: vec[1,2,3:6,0,-1]
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op_slcend, // end of slice
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op_slc, // slice like vec[1]
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op_slc2, // slice like vec[nil:10]
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op_mcallg, // get memory space of value in global scope
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op_mcalll, // get memory space of value in local scope
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op_mupval, // get memory space of value in closure
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op_mcallv, // get memory space of vec[index]
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op_mcallh, // get memory space of hash.label
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op_ret // return
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};
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const char* opname[]={
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"exit ","intg ","intl ","loadg ",
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"loadl ","loadu ","pnum ","pnil ",
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"pstr ","newv ","newh ","newf ",
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"happ ","para ","def ","dyn ",
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"lnot ","usub ","bnot ","btor ",
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"btxor ","btand ","add ","sub ",
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"mult ","div ","lnk ","addc ",
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"subc ","multc ","divc ","lnkc ",
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"addeq ","subeq ","muleq ","diveq ",
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"lnkeq ","bandeq","boreq ","bxoreq",
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"addeqc","subeqc","muleqc","diveqc",
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"lnkeqc","addecp","subecp","mulecp",
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"divecp","lnkecp","meq ","eq ",
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"neq ","less ","leq ","grt ",
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"geq ","lessc ","leqc ","grtc ",
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"geqc ","pop ","jmp ","jt ",
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"jf ","cnt ","findx ","feach ",
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"callg ","calll ","upval ","callv ",
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"callvi","callh ","callfv","callfh",
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"callb ","slcbeg","slcend","slc ",
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"slc2 ","mcallg","mcalll","mupval",
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"mcallv","mcallh","ret "
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};
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struct opcode {
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u8 op; // opcode
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u16 fidx; // source code file index
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u32 num; // immediate num
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u32 line; // location line of source code
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opcode() = default;
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opcode(const opcode&) = default;
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opcode& operator=(const opcode&) = default;
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};
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class codestream {
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private:
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opcode code;
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const u32 index;
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static const f64* nums;
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static const string* strs;
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static const string* files;
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public:
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codestream(const opcode& c, const u32 i): code(c), index(i) {}
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static void set(const f64*, const string*, const string*);
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void dump(std::ostream&) const;
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};
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const f64* codestream::nums=nullptr;
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const string* codestream::strs=nullptr;
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const string* codestream::files=nullptr;
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void codestream::set(
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const f64* numbuff,
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const string* strbuff,
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const string* filelist=nullptr
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) {
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nums=numbuff;
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strs=strbuff;
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files=filelist;
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}
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void codestream::dump(std::ostream& out) const {
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using std::setw;
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using std::setfill;
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using std::hex;
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using std::dec;
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auto op=code.op;
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auto num=code.num;
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out<<hex<<"0x"
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<<setw(6)<<setfill('0')<<index<<" "
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<<setw(2)<<setfill('0')<<(u32)op<<" "
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<<setw(2)<<setfill('0')<<((num>>16)&0xff)<<" "
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<<setw(2)<<setfill('0')<<((num>>8)&0xff)<<" "
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<<setw(2)<<setfill('0')<<(num&0xff)<<" "
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<<opname[op]<<" "<<dec;
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switch(op) {
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case op_addeq: case op_subeq:
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case op_muleq: case op_diveq:
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case op_lnkeq: case op_meq:
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case op_btandeq: case op_btoreq:
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case op_btxoreq:
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out<<hex<<"0x"<<num<<dec<<" sp-"<<num;break;
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case op_addeqc: case op_subeqc:
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case op_muleqc:case op_diveqc:
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out<<hex<<"0x"<<num<<dec<<" ("<<nums[num]<<")";break;
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case op_lnkeqc:
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out<<hex<<"0x"<<num<<dec<<" ("<<rawstr(strs[num], 16)<<")";break;
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case op_addecp: case op_subecp:
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case op_mulecp: case op_divecp:
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out<<hex<<"0x"<<num<<dec<<" ("<<nums[num]<<") sp-1";break;
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case op_lnkecp:
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out<<hex<<"0x"<<num<<dec<<" ("<<rawstr(strs[num], 16)<<") sp-1";break;
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case op_addc: case op_subc:
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case op_mulc: case op_divc:
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case op_lessc: case op_leqc:
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case op_grtc: case op_geqc:
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case op_pnum:
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out<<hex<<"0x"<<num<<dec<<" ("<<nums[num]<<")";break;
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case op_callvi: case op_newv:
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case op_callfv: case op_intg:
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case op_intl: case op_findex:
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case op_feach: case op_newf:
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case op_jmp: case op_jt:
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case op_jf: case op_callg:
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case op_mcallg: case op_loadg:
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case op_calll: case op_mcalll:
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case op_loadl:
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out<<hex<<"0x"<<num<<dec;break;
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case op_callb:
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out<<hex<<"0x"<<num<<" <"<<builtin[num].name
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<<"@0x"<<(u64)builtin[num].func<<dec<<">";break;
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case op_upval: case op_mupval:
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case op_loadu:
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out<<hex<<"0x"<<((num>>16)&0xffff)
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<<"[0x"<<(num&0xffff)<<"]"<<dec;break;
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case op_happ: case op_pstr:
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case op_lnkc: case op_callh:
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case op_mcallh: case op_para:
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case op_deft: case op_dyn:
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out<<hex<<"0x"<<num<<dec<<" ("<<rawstr(strs[num], 16)<<")";break;
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default:
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if (files) {
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out<<hex<<"0x"<<num<<dec;
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}
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break;
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}
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if (files) {
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out<<"("<<files[code.fidx]<<":"<<code.line<<")";
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}
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}
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std::ostream& operator<<(std::ostream& out, const codestream& ins) {
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ins.dump(out);
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return out;
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} |