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Posted to commits@mynewt.apache.org by ma...@apache.org on 2015/11/19 01:12:26 UTC
[13/14] incubator-mynewt-larva git commit: Lua from eluaproject.net.
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-larva/blob/148a95ec/libs/elua/elua_base/src/lcode.c
----------------------------------------------------------------------
diff --git a/libs/elua/elua_base/src/lcode.c b/libs/elua/elua_base/src/lcode.c
new file mode 100644
index 0000000..679cb9c
--- /dev/null
+++ b/libs/elua/elua_base/src/lcode.c
@@ -0,0 +1,831 @@
+/*
+** $Id: lcode.c,v 2.25.1.5 2011/01/31 14:53:16 roberto Exp $
+** Code generator for Lua
+** See Copyright Notice in lua.h
+*/
+
+
+#include <stdlib.h>
+
+#define lcode_c
+#define LUA_CORE
+
+#include "lua.h"
+
+#include "lcode.h"
+#include "ldebug.h"
+#include "ldo.h"
+#include "lgc.h"
+#include "llex.h"
+#include "lmem.h"
+#include "lobject.h"
+#include "lopcodes.h"
+#include "lparser.h"
+#include "ltable.h"
+
+
+#define hasjumps(e) ((e)->t != (e)->f)
+
+
+static int isnumeral(expdesc *e) {
+ return (e->k == VKNUM && e->t == NO_JUMP && e->f == NO_JUMP);
+}
+
+
+void luaK_nil (FuncState *fs, int from, int n) {
+ Instruction *previous;
+ if (fs->pc > fs->lasttarget) { /* no jumps to current position? */
+ if (fs->pc == 0) { /* function start? */
+ if (from >= fs->nactvar)
+ return; /* positions are already clean */
+ }
+ else {
+ previous = &fs->f->code[fs->pc-1];
+ if (GET_OPCODE(*previous) == OP_LOADNIL) {
+ int pfrom = GETARG_A(*previous);
+ int pto = GETARG_B(*previous);
+ if (pfrom <= from && from <= pto+1) { /* can connect both? */
+ if (from+n-1 > pto)
+ SETARG_B(*previous, from+n-1);
+ return;
+ }
+ }
+ }
+ }
+ luaK_codeABC(fs, OP_LOADNIL, from, from+n-1, 0); /* else no optimization */
+}
+
+
+int luaK_jump (FuncState *fs) {
+ int jpc = fs->jpc; /* save list of jumps to here */
+ int j;
+ fs->jpc = NO_JUMP;
+ j = luaK_codeAsBx(fs, OP_JMP, 0, NO_JUMP);
+ luaK_concat(fs, &j, jpc); /* keep them on hold */
+ return j;
+}
+
+
+void luaK_ret (FuncState *fs, int first, int nret) {
+ luaK_codeABC(fs, OP_RETURN, first, nret+1, 0);
+}
+
+
+static int condjump (FuncState *fs, OpCode op, int A, int B, int C) {
+ luaK_codeABC(fs, op, A, B, C);
+ return luaK_jump(fs);
+}
+
+
+static void fixjump (FuncState *fs, int pc, int dest) {
+ Instruction *jmp = &fs->f->code[pc];
+ int offset = dest-(pc+1);
+ lua_assert(dest != NO_JUMP);
+ if (abs(offset) > MAXARG_sBx)
+ luaX_syntaxerror(fs->ls, "control structure too long");
+ SETARG_sBx(*jmp, offset);
+}
+
+
+/*
+** returns current `pc' and marks it as a jump target (to avoid wrong
+** optimizations with consecutive instructions not in the same basic block).
+*/
+int luaK_getlabel (FuncState *fs) {
+ fs->lasttarget = fs->pc;
+ return fs->pc;
+}
+
+
+static int getjump (FuncState *fs, int pc) {
+ int offset = GETARG_sBx(fs->f->code[pc]);
+ if (offset == NO_JUMP) /* point to itself represents end of list */
+ return NO_JUMP; /* end of list */
+ else
+ return (pc+1)+offset; /* turn offset into absolute position */
+}
+
+
+static Instruction *getjumpcontrol (FuncState *fs, int pc) {
+ Instruction *pi = &fs->f->code[pc];
+ if (pc >= 1 && testTMode(GET_OPCODE(*(pi-1))))
+ return pi-1;
+ else
+ return pi;
+}
+
+
+/*
+** check whether list has any jump that do not produce a value
+** (or produce an inverted value)
+*/
+static int need_value (FuncState *fs, int list) {
+ for (; list != NO_JUMP; list = getjump(fs, list)) {
+ Instruction i = *getjumpcontrol(fs, list);
+ if (GET_OPCODE(i) != OP_TESTSET) return 1;
+ }
+ return 0; /* not found */
+}
+
+
+static int patchtestreg (FuncState *fs, int node, int reg) {
+ Instruction *i = getjumpcontrol(fs, node);
+ if (GET_OPCODE(*i) != OP_TESTSET)
+ return 0; /* cannot patch other instructions */
+ if (reg != NO_REG && reg != GETARG_B(*i))
+ SETARG_A(*i, reg);
+ else /* no register to put value or register already has the value */
+ *i = CREATE_ABC(OP_TEST, GETARG_B(*i), 0, GETARG_C(*i));
+
+ return 1;
+}
+
+
+static void removevalues (FuncState *fs, int list) {
+ for (; list != NO_JUMP; list = getjump(fs, list))
+ patchtestreg(fs, list, NO_REG);
+}
+
+
+static void patchlistaux (FuncState *fs, int list, int vtarget, int reg,
+ int dtarget) {
+ while (list != NO_JUMP) {
+ int next = getjump(fs, list);
+ if (patchtestreg(fs, list, reg))
+ fixjump(fs, list, vtarget);
+ else
+ fixjump(fs, list, dtarget); /* jump to default target */
+ list = next;
+ }
+}
+
+
+static void dischargejpc (FuncState *fs) {
+ patchlistaux(fs, fs->jpc, fs->pc, NO_REG, fs->pc);
+ fs->jpc = NO_JUMP;
+}
+
+
+void luaK_patchlist (FuncState *fs, int list, int target) {
+ if (target == fs->pc)
+ luaK_patchtohere(fs, list);
+ else {
+ lua_assert(target < fs->pc);
+ patchlistaux(fs, list, target, NO_REG, target);
+ }
+}
+
+
+void luaK_patchtohere (FuncState *fs, int list) {
+ luaK_getlabel(fs);
+ luaK_concat(fs, &fs->jpc, list);
+}
+
+
+void luaK_concat (FuncState *fs, int *l1, int l2) {
+ if (l2 == NO_JUMP) return;
+ else if (*l1 == NO_JUMP)
+ *l1 = l2;
+ else {
+ int list = *l1;
+ int next;
+ while ((next = getjump(fs, list)) != NO_JUMP) /* find last element */
+ list = next;
+ fixjump(fs, list, l2);
+ }
+}
+
+
+void luaK_checkstack (FuncState *fs, int n) {
+ int newstack = fs->freereg + n;
+ if (newstack > fs->f->maxstacksize) {
+ if (newstack >= MAXSTACK)
+ luaX_syntaxerror(fs->ls, "function or expression too complex");
+ fs->f->maxstacksize = cast_byte(newstack);
+ }
+}
+
+
+void luaK_reserveregs (FuncState *fs, int n) {
+ luaK_checkstack(fs, n);
+ fs->freereg += n;
+}
+
+
+static void freereg (FuncState *fs, int reg) {
+ if (!ISK(reg) && reg >= fs->nactvar) {
+ fs->freereg--;
+ lua_assert(reg == fs->freereg);
+ }
+}
+
+
+static void freeexp (FuncState *fs, expdesc *e) {
+ if (e->k == VNONRELOC)
+ freereg(fs, e->u.s.info);
+}
+
+
+static int addk (FuncState *fs, TValue *k, TValue *v) {
+ lua_State *L = fs->L;
+ TValue *idx = luaH_set(L, fs->h, k);
+ Proto *f = fs->f;
+ int oldsize = f->sizek;
+ if (ttisnumber(idx)) {
+ lua_assert(luaO_rawequalObj(&fs->f->k[cast_int(nvalue(idx))], v));
+ return cast_int(nvalue(idx));
+ }
+ else { /* constant not found; create a new entry */
+ setnvalue(idx, cast_num(fs->nk));
+ luaM_growvector(L, f->k, fs->nk, f->sizek, TValue,
+ MAXARG_Bx, "constant table overflow");
+ while (oldsize < f->sizek) setnilvalue(&f->k[oldsize++]);
+ setobj(L, &f->k[fs->nk], v);
+ luaC_barrier(L, f, v);
+ return fs->nk++;
+ }
+}
+
+
+int luaK_stringK (FuncState *fs, TString *s) {
+ TValue o;
+ setsvalue(fs->L, &o, s);
+ return addk(fs, &o, &o);
+}
+
+
+int luaK_numberK (FuncState *fs, lua_Number r) {
+ TValue o;
+ setnvalue(&o, r);
+ return addk(fs, &o, &o);
+}
+
+
+static int boolK (FuncState *fs, int b) {
+ TValue o;
+ setbvalue(&o, b);
+ return addk(fs, &o, &o);
+}
+
+
+static int nilK (FuncState *fs) {
+ TValue k, v;
+ setnilvalue(&v);
+ /* cannot use nil as key; instead use table itself to represent nil */
+ sethvalue(fs->L, &k, fs->h);
+ return addk(fs, &k, &v);
+}
+
+
+void luaK_setreturns (FuncState *fs, expdesc *e, int nresults) {
+ if (e->k == VCALL) { /* expression is an open function call? */
+ SETARG_C(getcode(fs, e), nresults+1);
+ }
+ else if (e->k == VVARARG) {
+ SETARG_B(getcode(fs, e), nresults+1);
+ SETARG_A(getcode(fs, e), fs->freereg);
+ luaK_reserveregs(fs, 1);
+ }
+}
+
+
+void luaK_setoneret (FuncState *fs, expdesc *e) {
+ if (e->k == VCALL) { /* expression is an open function call? */
+ e->k = VNONRELOC;
+ e->u.s.info = GETARG_A(getcode(fs, e));
+ }
+ else if (e->k == VVARARG) {
+ SETARG_B(getcode(fs, e), 2);
+ e->k = VRELOCABLE; /* can relocate its simple result */
+ }
+}
+
+
+void luaK_dischargevars (FuncState *fs, expdesc *e) {
+ switch (e->k) {
+ case VLOCAL: {
+ e->k = VNONRELOC;
+ break;
+ }
+ case VUPVAL: {
+ e->u.s.info = luaK_codeABC(fs, OP_GETUPVAL, 0, e->u.s.info, 0);
+ e->k = VRELOCABLE;
+ break;
+ }
+ case VGLOBAL: {
+ e->u.s.info = luaK_codeABx(fs, OP_GETGLOBAL, 0, e->u.s.info);
+ e->k = VRELOCABLE;
+ break;
+ }
+ case VINDEXED: {
+ freereg(fs, e->u.s.aux);
+ freereg(fs, e->u.s.info);
+ e->u.s.info = luaK_codeABC(fs, OP_GETTABLE, 0, e->u.s.info, e->u.s.aux);
+ e->k = VRELOCABLE;
+ break;
+ }
+ case VVARARG:
+ case VCALL: {
+ luaK_setoneret(fs, e);
+ break;
+ }
+ default: break; /* there is one value available (somewhere) */
+ }
+}
+
+
+static int code_label (FuncState *fs, int A, int b, int jump) {
+ luaK_getlabel(fs); /* those instructions may be jump targets */
+ return luaK_codeABC(fs, OP_LOADBOOL, A, b, jump);
+}
+
+
+static void discharge2reg (FuncState *fs, expdesc *e, int reg) {
+ luaK_dischargevars(fs, e);
+ switch (e->k) {
+ case VNIL: {
+ luaK_nil(fs, reg, 1);
+ break;
+ }
+ case VFALSE: case VTRUE: {
+ luaK_codeABC(fs, OP_LOADBOOL, reg, e->k == VTRUE, 0);
+ break;
+ }
+ case VK: {
+ luaK_codeABx(fs, OP_LOADK, reg, e->u.s.info);
+ break;
+ }
+ case VKNUM: {
+ luaK_codeABx(fs, OP_LOADK, reg, luaK_numberK(fs, e->u.nval));
+ break;
+ }
+ case VRELOCABLE: {
+ Instruction *pc = &getcode(fs, e);
+ SETARG_A(*pc, reg);
+ break;
+ }
+ case VNONRELOC: {
+ if (reg != e->u.s.info)
+ luaK_codeABC(fs, OP_MOVE, reg, e->u.s.info, 0);
+ break;
+ }
+ default: {
+ lua_assert(e->k == VVOID || e->k == VJMP);
+ return; /* nothing to do... */
+ }
+ }
+ e->u.s.info = reg;
+ e->k = VNONRELOC;
+}
+
+
+static void discharge2anyreg (FuncState *fs, expdesc *e) {
+ if (e->k != VNONRELOC) {
+ luaK_reserveregs(fs, 1);
+ discharge2reg(fs, e, fs->freereg-1);
+ }
+}
+
+
+static void exp2reg (FuncState *fs, expdesc *e, int reg) {
+ discharge2reg(fs, e, reg);
+ if (e->k == VJMP)
+ luaK_concat(fs, &e->t, e->u.s.info); /* put this jump in `t' list */
+ if (hasjumps(e)) {
+ int final; /* position after whole expression */
+ int p_f = NO_JUMP; /* position of an eventual LOAD false */
+ int p_t = NO_JUMP; /* position of an eventual LOAD true */
+ if (need_value(fs, e->t) || need_value(fs, e->f)) {
+ int fj = (e->k == VJMP) ? NO_JUMP : luaK_jump(fs);
+ p_f = code_label(fs, reg, 0, 1);
+ p_t = code_label(fs, reg, 1, 0);
+ luaK_patchtohere(fs, fj);
+ }
+ final = luaK_getlabel(fs);
+ patchlistaux(fs, e->f, final, reg, p_f);
+ patchlistaux(fs, e->t, final, reg, p_t);
+ }
+ e->f = e->t = NO_JUMP;
+ e->u.s.info = reg;
+ e->k = VNONRELOC;
+}
+
+
+void luaK_exp2nextreg (FuncState *fs, expdesc *e) {
+ luaK_dischargevars(fs, e);
+ freeexp(fs, e);
+ luaK_reserveregs(fs, 1);
+ exp2reg(fs, e, fs->freereg - 1);
+}
+
+
+int luaK_exp2anyreg (FuncState *fs, expdesc *e) {
+ luaK_dischargevars(fs, e);
+ if (e->k == VNONRELOC) {
+ if (!hasjumps(e)) return e->u.s.info; /* exp is already in a register */
+ if (e->u.s.info >= fs->nactvar) { /* reg. is not a local? */
+ exp2reg(fs, e, e->u.s.info); /* put value on it */
+ return e->u.s.info;
+ }
+ }
+ luaK_exp2nextreg(fs, e); /* default */
+ return e->u.s.info;
+}
+
+
+void luaK_exp2val (FuncState *fs, expdesc *e) {
+ if (hasjumps(e))
+ luaK_exp2anyreg(fs, e);
+ else
+ luaK_dischargevars(fs, e);
+}
+
+
+int luaK_exp2RK (FuncState *fs, expdesc *e) {
+ luaK_exp2val(fs, e);
+ switch (e->k) {
+ case VKNUM:
+ case VTRUE:
+ case VFALSE:
+ case VNIL: {
+ if (fs->nk <= MAXINDEXRK) { /* constant fit in RK operand? */
+ e->u.s.info = (e->k == VNIL) ? nilK(fs) :
+ (e->k == VKNUM) ? luaK_numberK(fs, e->u.nval) :
+ boolK(fs, (e->k == VTRUE));
+ e->k = VK;
+ return RKASK(e->u.s.info);
+ }
+ else break;
+ }
+ case VK: {
+ if (e->u.s.info <= MAXINDEXRK) /* constant fit in argC? */
+ return RKASK(e->u.s.info);
+ else break;
+ }
+ default: break;
+ }
+ /* not a constant in the right range: put it in a register */
+ return luaK_exp2anyreg(fs, e);
+}
+
+
+void luaK_storevar (FuncState *fs, expdesc *var, expdesc *ex) {
+ switch (var->k) {
+ case VLOCAL: {
+ freeexp(fs, ex);
+ exp2reg(fs, ex, var->u.s.info);
+ return;
+ }
+ case VUPVAL: {
+ int e = luaK_exp2anyreg(fs, ex);
+ luaK_codeABC(fs, OP_SETUPVAL, e, var->u.s.info, 0);
+ break;
+ }
+ case VGLOBAL: {
+ int e = luaK_exp2anyreg(fs, ex);
+ luaK_codeABx(fs, OP_SETGLOBAL, e, var->u.s.info);
+ break;
+ }
+ case VINDEXED: {
+ int e = luaK_exp2RK(fs, ex);
+ luaK_codeABC(fs, OP_SETTABLE, var->u.s.info, var->u.s.aux, e);
+ break;
+ }
+ default: {
+ lua_assert(0); /* invalid var kind to store */
+ break;
+ }
+ }
+ freeexp(fs, ex);
+}
+
+
+void luaK_self (FuncState *fs, expdesc *e, expdesc *key) {
+ int func;
+ luaK_exp2anyreg(fs, e);
+ freeexp(fs, e);
+ func = fs->freereg;
+ luaK_reserveregs(fs, 2);
+ luaK_codeABC(fs, OP_SELF, func, e->u.s.info, luaK_exp2RK(fs, key));
+ freeexp(fs, key);
+ e->u.s.info = func;
+ e->k = VNONRELOC;
+}
+
+
+static void invertjump (FuncState *fs, expdesc *e) {
+ Instruction *pc = getjumpcontrol(fs, e->u.s.info);
+ lua_assert(testTMode(GET_OPCODE(*pc)) && GET_OPCODE(*pc) != OP_TESTSET &&
+ GET_OPCODE(*pc) != OP_TEST);
+ SETARG_A(*pc, !(GETARG_A(*pc)));
+}
+
+
+static int jumponcond (FuncState *fs, expdesc *e, int cond) {
+ if (e->k == VRELOCABLE) {
+ Instruction ie = getcode(fs, e);
+ if (GET_OPCODE(ie) == OP_NOT) {
+ fs->pc--; /* remove previous OP_NOT */
+ return condjump(fs, OP_TEST, GETARG_B(ie), 0, !cond);
+ }
+ /* else go through */
+ }
+ discharge2anyreg(fs, e);
+ freeexp(fs, e);
+ return condjump(fs, OP_TESTSET, NO_REG, e->u.s.info, cond);
+}
+
+
+void luaK_goiftrue (FuncState *fs, expdesc *e) {
+ int pc; /* pc of last jump */
+ luaK_dischargevars(fs, e);
+ switch (e->k) {
+ case VK: case VKNUM: case VTRUE: {
+ pc = NO_JUMP; /* always true; do nothing */
+ break;
+ }
+ case VJMP: {
+ invertjump(fs, e);
+ pc = e->u.s.info;
+ break;
+ }
+ default: {
+ pc = jumponcond(fs, e, 0);
+ break;
+ }
+ }
+ luaK_concat(fs, &e->f, pc); /* insert last jump in `f' list */
+ luaK_patchtohere(fs, e->t);
+ e->t = NO_JUMP;
+}
+
+
+static void luaK_goiffalse (FuncState *fs, expdesc *e) {
+ int pc; /* pc of last jump */
+ luaK_dischargevars(fs, e);
+ switch (e->k) {
+ case VNIL: case VFALSE: {
+ pc = NO_JUMP; /* always false; do nothing */
+ break;
+ }
+ case VJMP: {
+ pc = e->u.s.info;
+ break;
+ }
+ default: {
+ pc = jumponcond(fs, e, 1);
+ break;
+ }
+ }
+ luaK_concat(fs, &e->t, pc); /* insert last jump in `t' list */
+ luaK_patchtohere(fs, e->f);
+ e->f = NO_JUMP;
+}
+
+
+static void codenot (FuncState *fs, expdesc *e) {
+ luaK_dischargevars(fs, e);
+ switch (e->k) {
+ case VNIL: case VFALSE: {
+ e->k = VTRUE;
+ break;
+ }
+ case VK: case VKNUM: case VTRUE: {
+ e->k = VFALSE;
+ break;
+ }
+ case VJMP: {
+ invertjump(fs, e);
+ break;
+ }
+ case VRELOCABLE:
+ case VNONRELOC: {
+ discharge2anyreg(fs, e);
+ freeexp(fs, e);
+ e->u.s.info = luaK_codeABC(fs, OP_NOT, 0, e->u.s.info, 0);
+ e->k = VRELOCABLE;
+ break;
+ }
+ default: {
+ lua_assert(0); /* cannot happen */
+ break;
+ }
+ }
+ /* interchange true and false lists */
+ { int temp = e->f; e->f = e->t; e->t = temp; }
+ removevalues(fs, e->f);
+ removevalues(fs, e->t);
+}
+
+
+void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k) {
+ t->u.s.aux = luaK_exp2RK(fs, k);
+ t->k = VINDEXED;
+}
+
+
+static int constfolding (OpCode op, expdesc *e1, expdesc *e2) {
+ lua_Number v1, v2, r;
+ if (!isnumeral(e1) || !isnumeral(e2)) return 0;
+ v1 = e1->u.nval;
+ v2 = e2->u.nval;
+ switch (op) {
+ case OP_ADD: r = luai_numadd(v1, v2); break;
+ case OP_SUB: r = luai_numsub(v1, v2); break;
+ case OP_MUL: r = luai_nummul(v1, v2); break;
+ case OP_DIV:
+ if (v2 == 0) return 0; /* do not attempt to divide by 0 */
+ r = luai_numdiv(v1, v2); break;
+ case OP_MOD:
+ if (v2 == 0) return 0; /* do not attempt to divide by 0 */
+ r = luai_nummod(v1, v2); break;
+ case OP_POW: r = luai_numpow(v1, v2); break;
+ case OP_UNM: r = luai_numunm(v1); break;
+ case OP_LEN: return 0; /* no constant folding for 'len' */
+ default: lua_assert(0); r = 0; break;
+ }
+ if (luai_numisnan(r)) return 0; /* do not attempt to produce NaN */
+ e1->u.nval = r;
+ return 1;
+}
+
+
+static void codearith (FuncState *fs, OpCode op, expdesc *e1, expdesc *e2) {
+ if (constfolding(op, e1, e2))
+ return;
+ else {
+ int o2 = (op != OP_UNM && op != OP_LEN) ? luaK_exp2RK(fs, e2) : 0;
+ int o1 = luaK_exp2RK(fs, e1);
+ if (o1 > o2) {
+ freeexp(fs, e1);
+ freeexp(fs, e2);
+ }
+ else {
+ freeexp(fs, e2);
+ freeexp(fs, e1);
+ }
+ e1->u.s.info = luaK_codeABC(fs, op, 0, o1, o2);
+ e1->k = VRELOCABLE;
+ }
+}
+
+
+static void codecomp (FuncState *fs, OpCode op, int cond, expdesc *e1,
+ expdesc *e2) {
+ int o1 = luaK_exp2RK(fs, e1);
+ int o2 = luaK_exp2RK(fs, e2);
+ freeexp(fs, e2);
+ freeexp(fs, e1);
+ if (cond == 0 && op != OP_EQ) {
+ int temp; /* exchange args to replace by `<' or `<=' */
+ temp = o1; o1 = o2; o2 = temp; /* o1 <==> o2 */
+ cond = 1;
+ }
+ e1->u.s.info = condjump(fs, op, cond, o1, o2);
+ e1->k = VJMP;
+}
+
+
+void luaK_prefix (FuncState *fs, UnOpr op, expdesc *e) {
+ expdesc e2;
+ e2.t = e2.f = NO_JUMP; e2.k = VKNUM; e2.u.nval = 0;
+ switch (op) {
+ case OPR_MINUS: {
+ if (!isnumeral(e))
+ luaK_exp2anyreg(fs, e); /* cannot operate on non-numeric constants */
+ codearith(fs, OP_UNM, e, &e2);
+ break;
+ }
+ case OPR_NOT: codenot(fs, e); break;
+ case OPR_LEN: {
+ luaK_exp2anyreg(fs, e); /* cannot operate on constants */
+ codearith(fs, OP_LEN, e, &e2);
+ break;
+ }
+ default: lua_assert(0);
+ }
+}
+
+
+void luaK_infix (FuncState *fs, BinOpr op, expdesc *v) {
+ switch (op) {
+ case OPR_AND: {
+ luaK_goiftrue(fs, v);
+ break;
+ }
+ case OPR_OR: {
+ luaK_goiffalse(fs, v);
+ break;
+ }
+ case OPR_CONCAT: {
+ luaK_exp2nextreg(fs, v); /* operand must be on the `stack' */
+ break;
+ }
+ case OPR_ADD: case OPR_SUB: case OPR_MUL: case OPR_DIV:
+ case OPR_MOD: case OPR_POW: {
+ if (!isnumeral(v)) luaK_exp2RK(fs, v);
+ break;
+ }
+ default: {
+ luaK_exp2RK(fs, v);
+ break;
+ }
+ }
+}
+
+
+void luaK_posfix (FuncState *fs, BinOpr op, expdesc *e1, expdesc *e2) {
+ switch (op) {
+ case OPR_AND: {
+ lua_assert(e1->t == NO_JUMP); /* list must be closed */
+ luaK_dischargevars(fs, e2);
+ luaK_concat(fs, &e2->f, e1->f);
+ *e1 = *e2;
+ break;
+ }
+ case OPR_OR: {
+ lua_assert(e1->f == NO_JUMP); /* list must be closed */
+ luaK_dischargevars(fs, e2);
+ luaK_concat(fs, &e2->t, e1->t);
+ *e1 = *e2;
+ break;
+ }
+ case OPR_CONCAT: {
+ luaK_exp2val(fs, e2);
+ if (e2->k == VRELOCABLE && GET_OPCODE(getcode(fs, e2)) == OP_CONCAT) {
+ lua_assert(e1->u.s.info == GETARG_B(getcode(fs, e2))-1);
+ freeexp(fs, e1);
+ SETARG_B(getcode(fs, e2), e1->u.s.info);
+ e1->k = VRELOCABLE; e1->u.s.info = e2->u.s.info;
+ }
+ else {
+ luaK_exp2nextreg(fs, e2); /* operand must be on the 'stack' */
+ codearith(fs, OP_CONCAT, e1, e2);
+ }
+ break;
+ }
+ case OPR_ADD: codearith(fs, OP_ADD, e1, e2); break;
+ case OPR_SUB: codearith(fs, OP_SUB, e1, e2); break;
+ case OPR_MUL: codearith(fs, OP_MUL, e1, e2); break;
+ case OPR_DIV: codearith(fs, OP_DIV, e1, e2); break;
+ case OPR_MOD: codearith(fs, OP_MOD, e1, e2); break;
+ case OPR_POW: codearith(fs, OP_POW, e1, e2); break;
+ case OPR_EQ: codecomp(fs, OP_EQ, 1, e1, e2); break;
+ case OPR_NE: codecomp(fs, OP_EQ, 0, e1, e2); break;
+ case OPR_LT: codecomp(fs, OP_LT, 1, e1, e2); break;
+ case OPR_LE: codecomp(fs, OP_LE, 1, e1, e2); break;
+ case OPR_GT: codecomp(fs, OP_LT, 0, e1, e2); break;
+ case OPR_GE: codecomp(fs, OP_LE, 0, e1, e2); break;
+ default: lua_assert(0);
+ }
+}
+
+
+void luaK_fixline (FuncState *fs, int line) {
+ fs->f->lineinfo[fs->pc - 1] = line;
+}
+
+
+static int luaK_code (FuncState *fs, Instruction i, int line) {
+ Proto *f = fs->f;
+ dischargejpc(fs); /* `pc' will change */
+ /* put new instruction in code array */
+ luaM_growvector(fs->L, f->code, fs->pc, f->sizecode, Instruction,
+ MAX_INT, "code size overflow");
+ f->code[fs->pc] = i;
+ /* save corresponding line information */
+ luaM_growvector(fs->L, f->lineinfo, fs->pc, f->sizelineinfo, int,
+ MAX_INT, "code size overflow");
+ f->lineinfo[fs->pc] = line;
+ return fs->pc++;
+}
+
+
+int luaK_codeABC (FuncState *fs, OpCode o, int a, int b, int c) {
+ lua_assert(getOpMode(o) == iABC);
+ lua_assert(getBMode(o) != OpArgN || b == 0);
+ lua_assert(getCMode(o) != OpArgN || c == 0);
+ return luaK_code(fs, CREATE_ABC(o, a, b, c), fs->ls->lastline);
+}
+
+
+int luaK_codeABx (FuncState *fs, OpCode o, int a, unsigned int bc) {
+ lua_assert(getOpMode(o) == iABx || getOpMode(o) == iAsBx);
+ lua_assert(getCMode(o) == OpArgN);
+ return luaK_code(fs, CREATE_ABx(o, a, bc), fs->ls->lastline);
+}
+
+
+void luaK_setlist (FuncState *fs, int base, int nelems, int tostore) {
+ int c = (nelems - 1)/LFIELDS_PER_FLUSH + 1;
+ int b = (tostore == LUA_MULTRET) ? 0 : tostore;
+ lua_assert(tostore != 0);
+ if (c <= MAXARG_C)
+ luaK_codeABC(fs, OP_SETLIST, base, b, c);
+ else {
+ luaK_codeABC(fs, OP_SETLIST, base, b, 0);
+ luaK_code(fs, cast(Instruction, c), fs->ls->lastline);
+ }
+ fs->freereg = base + 1; /* free registers with list values */
+}
+
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-larva/blob/148a95ec/libs/elua/elua_base/src/lcode.h
----------------------------------------------------------------------
diff --git a/libs/elua/elua_base/src/lcode.h b/libs/elua/elua_base/src/lcode.h
new file mode 100644
index 0000000..b941c60
--- /dev/null
+++ b/libs/elua/elua_base/src/lcode.h
@@ -0,0 +1,76 @@
+/*
+** $Id: lcode.h,v 1.48.1.1 2007/12/27 13:02:25 roberto Exp $
+** Code generator for Lua
+** See Copyright Notice in lua.h
+*/
+
+#ifndef lcode_h
+#define lcode_h
+
+#include "llex.h"
+#include "lobject.h"
+#include "lopcodes.h"
+#include "lparser.h"
+
+
+/*
+** Marks the end of a patch list. It is an invalid value both as an absolute
+** address, and as a list link (would link an element to itself).
+*/
+#define NO_JUMP (-1)
+
+
+/*
+** grep "ORDER OPR" if you change these enums
+*/
+typedef enum BinOpr {
+ OPR_ADD, OPR_SUB, OPR_MUL, OPR_DIV, OPR_MOD, OPR_POW,
+ OPR_CONCAT,
+ OPR_NE, OPR_EQ,
+ OPR_LT, OPR_LE, OPR_GT, OPR_GE,
+ OPR_AND, OPR_OR,
+ OPR_NOBINOPR
+} BinOpr;
+
+
+typedef enum UnOpr { OPR_MINUS, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr;
+
+
+#define getcode(fs,e) ((fs)->f->code[(e)->u.s.info])
+
+#define luaK_codeAsBx(fs,o,A,sBx) luaK_codeABx(fs,o,A,(sBx)+MAXARG_sBx)
+
+#define luaK_setmultret(fs,e) luaK_setreturns(fs, e, LUA_MULTRET)
+
+LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx);
+LUAI_FUNC int luaK_codeABC (FuncState *fs, OpCode o, int A, int B, int C);
+LUAI_FUNC void luaK_fixline (FuncState *fs, int line);
+LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n);
+LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n);
+LUAI_FUNC void luaK_checkstack (FuncState *fs, int n);
+LUAI_FUNC int luaK_stringK (FuncState *fs, TString *s);
+LUAI_FUNC int luaK_numberK (FuncState *fs, lua_Number r);
+LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e);
+LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e);
+LUAI_FUNC void luaK_exp2nextreg (FuncState *fs, expdesc *e);
+LUAI_FUNC void luaK_exp2val (FuncState *fs, expdesc *e);
+LUAI_FUNC int luaK_exp2RK (FuncState *fs, expdesc *e);
+LUAI_FUNC void luaK_self (FuncState *fs, expdesc *e, expdesc *key);
+LUAI_FUNC void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k);
+LUAI_FUNC void luaK_goiftrue (FuncState *fs, expdesc *e);
+LUAI_FUNC void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e);
+LUAI_FUNC void luaK_setreturns (FuncState *fs, expdesc *e, int nresults);
+LUAI_FUNC void luaK_setoneret (FuncState *fs, expdesc *e);
+LUAI_FUNC int luaK_jump (FuncState *fs);
+LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret);
+LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target);
+LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list);
+LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2);
+LUAI_FUNC int luaK_getlabel (FuncState *fs);
+LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v);
+LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
+LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1, expdesc *v2);
+LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore);
+
+
+#endif
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-larva/blob/148a95ec/libs/elua/elua_base/src/ldblib.c
----------------------------------------------------------------------
diff --git a/libs/elua/elua_base/src/ldblib.c b/libs/elua/elua_base/src/ldblib.c
new file mode 100644
index 0000000..1b9a037
--- /dev/null
+++ b/libs/elua/elua_base/src/ldblib.c
@@ -0,0 +1,397 @@
+/*
+** $Id: ldblib.c,v 1.104.1.4 2009/08/04 18:50:18 roberto Exp $
+** Interface from Lua to its debug API
+** See Copyright Notice in lua.h
+*/
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define ldblib_c
+#define LUA_LIB
+
+#include "lua.h"
+
+#include "lauxlib.h"
+#include "lualib.h"
+#include "lrotable.h"
+
+
+
+static int db_getregistry (lua_State *L) {
+ lua_pushvalue(L, LUA_REGISTRYINDEX);
+ return 1;
+}
+
+
+static int db_getmetatable (lua_State *L) {
+ luaL_checkany(L, 1);
+ if (!lua_getmetatable(L, 1)) {
+ lua_pushnil(L); /* no metatable */
+ }
+ return 1;
+}
+
+
+static int db_setmetatable (lua_State *L) {
+ int t = lua_type(L, 2);
+ luaL_argcheck(L, t == LUA_TNIL || t == LUA_TTABLE, 2,
+ "nil or table expected");
+ lua_settop(L, 2);
+ lua_pushboolean(L, lua_setmetatable(L, 1));
+ return 1;
+}
+
+
+static int db_getfenv (lua_State *L) {
+ luaL_checkany(L, 1);
+ lua_getfenv(L, 1);
+ return 1;
+}
+
+
+static int db_setfenv (lua_State *L) {
+ luaL_checktype(L, 2, LUA_TTABLE);
+ lua_settop(L, 2);
+ if (lua_setfenv(L, 1) == 0)
+ luaL_error(L, LUA_QL("setfenv")
+ " cannot change environment of given object");
+ return 1;
+}
+
+
+static void settabss (lua_State *L, const char *i, const char *v) {
+ lua_pushstring(L, v);
+ lua_setfield(L, -2, i);
+}
+
+
+static void settabsi (lua_State *L, const char *i, int v) {
+ lua_pushinteger(L, v);
+ lua_setfield(L, -2, i);
+}
+
+
+static lua_State *getthread (lua_State *L, int *arg) {
+ if (lua_isthread(L, 1)) {
+ *arg = 1;
+ return lua_tothread(L, 1);
+ }
+ else {
+ *arg = 0;
+ return L;
+ }
+}
+
+
+static void treatstackoption (lua_State *L, lua_State *L1, const char *fname) {
+ if (L == L1) {
+ lua_pushvalue(L, -2);
+ lua_remove(L, -3);
+ }
+ else
+ lua_xmove(L1, L, 1);
+ lua_setfield(L, -2, fname);
+}
+
+
+static int db_getinfo (lua_State *L) {
+ lua_Debug ar;
+ int arg;
+ lua_State *L1 = getthread(L, &arg);
+ const char *options = luaL_optstring(L, arg+2, "flnSu");
+ if (lua_isnumber(L, arg+1)) {
+ if (!lua_getstack(L1, (int)lua_tointeger(L, arg+1), &ar)) {
+ lua_pushnil(L); /* level out of range */
+ return 1;
+ }
+ }
+ else if (lua_isfunction(L, arg+1) || lua_islightfunction(L, arg+1)) {
+ lua_pushfstring(L, ">%s", options);
+ options = lua_tostring(L, -1);
+ lua_pushvalue(L, arg+1);
+ lua_xmove(L, L1, 1);
+ }
+ else
+ return luaL_argerror(L, arg+1, "function or level expected");
+ if (!lua_getinfo(L1, options, &ar))
+ return luaL_argerror(L, arg+2, "invalid option");
+ lua_createtable(L, 0, 2);
+ if (strchr(options, 'S')) {
+ settabss(L, "source", ar.source);
+ settabss(L, "short_src", ar.short_src);
+ settabsi(L, "linedefined", ar.linedefined);
+ settabsi(L, "lastlinedefined", ar.lastlinedefined);
+ settabss(L, "what", ar.what);
+ }
+ if (strchr(options, 'l'))
+ settabsi(L, "currentline", ar.currentline);
+ if (strchr(options, 'u'))
+ settabsi(L, "nups", ar.nups);
+ if (strchr(options, 'n')) {
+ settabss(L, "name", ar.name);
+ settabss(L, "namewhat", ar.namewhat);
+ }
+ if (strchr(options, 'L'))
+ treatstackoption(L, L1, "activelines");
+ if (strchr(options, 'f'))
+ treatstackoption(L, L1, "func");
+ return 1; /* return table */
+}
+
+
+static int db_getlocal (lua_State *L) {
+ int arg;
+ lua_State *L1 = getthread(L, &arg);
+ lua_Debug ar;
+ const char *name;
+ if (!lua_getstack(L1, luaL_checkint(L, arg+1), &ar)) /* out of range? */
+ return luaL_argerror(L, arg+1, "level out of range");
+ name = lua_getlocal(L1, &ar, luaL_checkint(L, arg+2));
+ if (name) {
+ lua_xmove(L1, L, 1);
+ lua_pushstring(L, name);
+ lua_pushvalue(L, -2);
+ return 2;
+ }
+ else {
+ lua_pushnil(L);
+ return 1;
+ }
+}
+
+
+static int db_setlocal (lua_State *L) {
+ int arg;
+ lua_State *L1 = getthread(L, &arg);
+ lua_Debug ar;
+ if (!lua_getstack(L1, luaL_checkint(L, arg+1), &ar)) /* out of range? */
+ return luaL_argerror(L, arg+1, "level out of range");
+ luaL_checkany(L, arg+3);
+ lua_settop(L, arg+3);
+ lua_xmove(L, L1, 1);
+ lua_pushstring(L, lua_setlocal(L1, &ar, luaL_checkint(L, arg+2)));
+ return 1;
+}
+
+
+static int auxupvalue (lua_State *L, int get) {
+ const char *name;
+ int n = luaL_checkint(L, 2);
+ luaL_checktype(L, 1, LUA_TFUNCTION);
+ if (lua_iscfunction(L, 1)) return 0; /* cannot touch C upvalues from Lua */
+ name = get ? lua_getupvalue(L, 1, n) : lua_setupvalue(L, 1, n);
+ if (name == NULL) return 0;
+ lua_pushstring(L, name);
+ lua_insert(L, -(get+1));
+ return get + 1;
+}
+
+
+static int db_getupvalue (lua_State *L) {
+ return auxupvalue(L, 1);
+}
+
+
+static int db_setupvalue (lua_State *L) {
+ luaL_checkany(L, 3);
+ return auxupvalue(L, 0);
+}
+
+
+
+static const char KEY_HOOK = 'h';
+
+
+static void hookf (lua_State *L, lua_Debug *ar) {
+ static const char *const hooknames[] =
+ {"call", "return", "line", "count", "tail return"};
+ lua_pushlightuserdata(L, (void *)&KEY_HOOK);
+ lua_rawget(L, LUA_REGISTRYINDEX);
+ lua_pushlightuserdata(L, L);
+ lua_rawget(L, -2);
+ if (lua_isfunction(L, -1)) {
+ lua_pushstring(L, hooknames[(int)ar->event]);
+ if (ar->currentline >= 0)
+ lua_pushinteger(L, ar->currentline);
+ else lua_pushnil(L);
+ lua_assert(lua_getinfo(L, "lS", ar));
+ lua_call(L, 2, 0);
+ }
+}
+
+
+static int makemask (const char *smask, int count) {
+ int mask = 0;
+ if (strchr(smask, 'c')) mask |= LUA_MASKCALL;
+ if (strchr(smask, 'r')) mask |= LUA_MASKRET;
+ if (strchr(smask, 'l')) mask |= LUA_MASKLINE;
+ if (count > 0) mask |= LUA_MASKCOUNT;
+ return mask;
+}
+
+
+static char *unmakemask (int mask, char *smask) {
+ int i = 0;
+ if (mask & LUA_MASKCALL) smask[i++] = 'c';
+ if (mask & LUA_MASKRET) smask[i++] = 'r';
+ if (mask & LUA_MASKLINE) smask[i++] = 'l';
+ smask[i] = '\0';
+ return smask;
+}
+
+
+static void gethooktable (lua_State *L) {
+ lua_pushlightuserdata(L, (void *)&KEY_HOOK);
+ lua_rawget(L, LUA_REGISTRYINDEX);
+ if (!lua_istable(L, -1)) {
+ lua_pop(L, 1);
+ lua_createtable(L, 0, 1);
+ lua_pushlightuserdata(L, (void *)&KEY_HOOK);
+ lua_pushvalue(L, -2);
+ lua_rawset(L, LUA_REGISTRYINDEX);
+ }
+}
+
+
+static int db_sethook (lua_State *L) {
+ int arg, mask, count;
+ lua_Hook func;
+ lua_State *L1 = getthread(L, &arg);
+ if (lua_isnoneornil(L, arg+1)) {
+ lua_settop(L, arg+1);
+ func = NULL; mask = 0; count = 0; /* turn off hooks */
+ }
+ else {
+ const char *smask = luaL_checkstring(L, arg+2);
+ luaL_checkanyfunction(L, arg+1);
+ count = luaL_optint(L, arg+3, 0);
+ func = hookf; mask = makemask(smask, count);
+ }
+ gethooktable(L);
+ lua_pushlightuserdata(L, L1);
+ lua_pushvalue(L, arg+1);
+ lua_rawset(L, -3); /* set new hook */
+ lua_pop(L, 1); /* remove hook table */
+ lua_sethook(L1, func, mask, count); /* set hooks */
+ return 0;
+}
+
+
+static int db_gethook (lua_State *L) {
+ int arg;
+ lua_State *L1 = getthread(L, &arg);
+ char buff[5];
+ int mask = lua_gethookmask(L1);
+ lua_Hook hook = lua_gethook(L1);
+ if (hook != NULL && hook != hookf) /* external hook? */
+ lua_pushliteral(L, "external hook");
+ else {
+ gethooktable(L);
+ lua_pushlightuserdata(L, L1);
+ lua_rawget(L, -2); /* get hook */
+ lua_remove(L, -2); /* remove hook table */
+ }
+ lua_pushstring(L, unmakemask(mask, buff));
+ lua_pushinteger(L, lua_gethookcount(L1));
+ return 3;
+}
+
+
+static int db_debug (lua_State *L) {
+ for (;;) {
+ char buffer[250];
+ fputs("lua_debug> ", stderr);
+ if (fgets(buffer, sizeof(buffer), stdin) == 0 ||
+ strcmp(buffer, "cont\n") == 0)
+ return 0;
+ if (luaL_loadbuffer(L, buffer, strlen(buffer), "=(debug command)") ||
+ lua_pcall(L, 0, 0, 0)) {
+ fputs(lua_tostring(L, -1), stderr);
+ fputs("\n", stderr);
+ }
+ lua_settop(L, 0); /* remove eventual returns */
+ }
+}
+
+
+#define LEVELS1 12 /* size of the first part of the stack */
+#define LEVELS2 10 /* size of the second part of the stack */
+
+static int db_errorfb (lua_State *L) {
+ int level;
+ int firstpart = 1; /* still before eventual `...' */
+ int arg;
+ lua_State *L1 = getthread(L, &arg);
+ lua_Debug ar;
+ if (lua_isnumber(L, arg+2)) {
+ level = (int)lua_tointeger(L, arg+2);
+ lua_pop(L, 1);
+ }
+ else
+ level = (L == L1) ? 1 : 0; /* level 0 may be this own function */
+ if (lua_gettop(L) == arg)
+ lua_pushliteral(L, "");
+ else if (!lua_isstring(L, arg+1)) return 1; /* message is not a string */
+ else lua_pushliteral(L, "\n");
+ lua_pushliteral(L, "stack traceback:");
+ while (lua_getstack(L1, level++, &ar)) {
+ if (level > LEVELS1 && firstpart) {
+ /* no more than `LEVELS2' more levels? */
+ if (!lua_getstack(L1, level+LEVELS2, &ar))
+ level--; /* keep going */
+ else {
+ lua_pushliteral(L, "\n\t..."); /* too many levels */
+ while (lua_getstack(L1, level+LEVELS2, &ar)) /* find last levels */
+ level++;
+ }
+ firstpart = 0;
+ continue;
+ }
+ lua_pushliteral(L, "\n\t");
+ lua_getinfo(L1, "Snl", &ar);
+ lua_pushfstring(L, "%s:", ar.short_src);
+ if (ar.currentline > 0)
+ lua_pushfstring(L, "%d:", ar.currentline);
+ if (*ar.namewhat != '\0') /* is there a name? */
+ lua_pushfstring(L, " in function " LUA_QS, ar.name);
+ else {
+ if (*ar.what == 'm') /* main? */
+ lua_pushfstring(L, " in main chunk");
+ else if (*ar.what == 'C' || *ar.what == 't')
+ lua_pushliteral(L, " ?"); /* C function or tail call */
+ else
+ lua_pushfstring(L, " in function <%s:%d>",
+ ar.short_src, ar.linedefined);
+ }
+ lua_concat(L, lua_gettop(L) - arg);
+ }
+ lua_concat(L, lua_gettop(L) - arg);
+ return 1;
+}
+
+#define MIN_OPT_LEVEL 1
+#include "lrodefs.h"
+const LUA_REG_TYPE dblib[] = {
+ {LSTRKEY("debug"), LFUNCVAL(db_debug)},
+ {LSTRKEY("getfenv"), LFUNCVAL(db_getfenv)},
+ {LSTRKEY("gethook"), LFUNCVAL(db_gethook)},
+ {LSTRKEY("getinfo"), LFUNCVAL(db_getinfo)},
+ {LSTRKEY("getlocal"), LFUNCVAL(db_getlocal)},
+ {LSTRKEY("getregistry"), LFUNCVAL(db_getregistry)},
+ {LSTRKEY("getmetatable"), LFUNCVAL(db_getmetatable)},
+ {LSTRKEY("getupvalue"), LFUNCVAL(db_getupvalue)},
+ {LSTRKEY("setfenv"), LFUNCVAL(db_setfenv)},
+ {LSTRKEY("sethook"), LFUNCVAL(db_sethook)},
+ {LSTRKEY("setlocal"), LFUNCVAL(db_setlocal)},
+ {LSTRKEY("setmetatable"), LFUNCVAL(db_setmetatable)},
+ {LSTRKEY("setupvalue"), LFUNCVAL(db_setupvalue)},
+ {LSTRKEY("traceback"), LFUNCVAL(db_errorfb)},
+ {LNILKEY, LNILVAL}
+};
+
+LUALIB_API int luaopen_debug (lua_State *L) {
+ LREGISTER(L, LUA_DBLIBNAME, dblib);
+}
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-larva/blob/148a95ec/libs/elua/elua_base/src/ldebug.c
----------------------------------------------------------------------
diff --git a/libs/elua/elua_base/src/ldebug.c b/libs/elua/elua_base/src/ldebug.c
new file mode 100644
index 0000000..338cce2
--- /dev/null
+++ b/libs/elua/elua_base/src/ldebug.c
@@ -0,0 +1,649 @@
+/*
+** $Id: ldebug.c,v 2.29.1.6 2008/05/08 16:56:26 roberto Exp $
+** Debug Interface
+** See Copyright Notice in lua.h
+*/
+
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <string.h>
+
+
+#define ldebug_c
+#define LUA_CORE
+
+#include "lua.h"
+
+#include "lapi.h"
+#include "lcode.h"
+#include "ldebug.h"
+#include "ldo.h"
+#include "lfunc.h"
+#include "lobject.h"
+#include "lopcodes.h"
+#include "lstate.h"
+#include "lstring.h"
+#include "ltable.h"
+#include "ltm.h"
+#include "lvm.h"
+
+
+
+static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name);
+
+
+static int currentpc (lua_State *L, CallInfo *ci) {
+ if (!isLua(ci)) return -1; /* function is not a Lua function? */
+ if (ci == L->ci)
+ ci->savedpc = L->savedpc;
+ return pcRel(ci->savedpc, ci_func(ci)->l.p);
+}
+
+
+static int currentline (lua_State *L, CallInfo *ci) {
+ int pc = currentpc(L, ci);
+ if (pc < 0)
+ return -1; /* only active lua functions have current-line information */
+ else
+ return getline(ci_func(ci)->l.p, pc);
+}
+
+
+/*
+** this function can be called asynchronous (e.g. during a signal)
+*/
+LUA_API int lua_sethook (lua_State *L, lua_Hook func, int mask, int count) {
+ if (func == NULL || mask == 0) { /* turn off hooks? */
+ mask = 0;
+ func = NULL;
+ }
+ L->hook = func;
+ L->basehookcount = count;
+ resethookcount(L);
+ L->hookmask = cast_byte(mask);
+ return 1;
+}
+
+
+LUA_API lua_Hook lua_gethook (lua_State *L) {
+ return L->hook;
+}
+
+
+LUA_API int lua_gethookmask (lua_State *L) {
+ return L->hookmask;
+}
+
+
+LUA_API int lua_gethookcount (lua_State *L) {
+ return L->basehookcount;
+}
+
+
+LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar) {
+ int status;
+ CallInfo *ci;
+ lua_lock(L);
+ for (ci = L->ci; level > 0 && ci > L->base_ci; ci--) {
+ level--;
+ if (f_isLua(ci)) /* Lua function? */
+ level -= ci->tailcalls; /* skip lost tail calls */
+ }
+ if (level == 0 && ci > L->base_ci) { /* level found? */
+ status = 1;
+ ar->i_ci = cast_int(ci - L->base_ci);
+ }
+ else if (level < 0) { /* level is of a lost tail call? */
+ status = 1;
+ ar->i_ci = 0;
+ }
+ else status = 0; /* no such level */
+ lua_unlock(L);
+ return status;
+}
+
+
+static Proto *getluaproto (CallInfo *ci) {
+ return (isLua(ci) ? ci_func(ci)->l.p : NULL);
+}
+
+
+static const char *findlocal (lua_State *L, CallInfo *ci, int n) {
+ const char *name;
+ Proto *fp = getluaproto(ci);
+ if (fp && (name = luaF_getlocalname(fp, n, currentpc(L, ci))) != NULL)
+ return name; /* is a local variable in a Lua function */
+ else {
+ StkId limit = (ci == L->ci) ? L->top : (ci+1)->func;
+ if (limit - ci->base >= n && n > 0) /* is 'n' inside 'ci' stack? */
+ return "(*temporary)";
+ else
+ return NULL;
+ }
+}
+
+
+LUA_API const char *lua_getlocal (lua_State *L, const lua_Debug *ar, int n) {
+ CallInfo *ci = L->base_ci + ar->i_ci;
+ const char *name = findlocal(L, ci, n);
+ lua_lock(L);
+ if (name)
+ luaA_pushobject(L, ci->base + (n - 1));
+ lua_unlock(L);
+ return name;
+}
+
+
+LUA_API const char *lua_setlocal (lua_State *L, const lua_Debug *ar, int n) {
+ CallInfo *ci = L->base_ci + ar->i_ci;
+ const char *name = findlocal(L, ci, n);
+ lua_lock(L);
+ if (name)
+ setobjs2s(L, ci->base + (n - 1), L->top - 1);
+ L->top--; /* pop value */
+ lua_unlock(L);
+ return name;
+}
+
+
+static void funcinfo (lua_Debug *ar, Closure *cl, void *plight) {
+ if (plight || cl->c.isC) {
+ ar->source = "=[C]";
+ ar->linedefined = -1;
+ ar->lastlinedefined = -1;
+ ar->what = "C";
+ }
+ else {
+ ar->source = getstr(cl->l.p->source);
+ ar->linedefined = cl->l.p->linedefined;
+ ar->lastlinedefined = cl->l.p->lastlinedefined;
+ ar->what = (ar->linedefined == 0) ? "main" : "Lua";
+ }
+ luaO_chunkid(ar->short_src, ar->source, LUA_IDSIZE);
+}
+
+
+static void info_tailcall (lua_Debug *ar) {
+ ar->name = ar->namewhat = "";
+ ar->what = "tail";
+ ar->lastlinedefined = ar->linedefined = ar->currentline = -1;
+ ar->source = "=(tail call)";
+ luaO_chunkid(ar->short_src, ar->source, LUA_IDSIZE);
+ ar->nups = 0;
+}
+
+
+static void collectvalidlines (lua_State *L, Closure *f) {
+ if (f == NULL || f->c.isC) {
+ setnilvalue(L->top);
+ }
+ else {
+ Table *t = luaH_new(L, 0, 0);
+ int *lineinfo = f->l.p->lineinfo;
+ int i;
+ for (i=0; i<f->l.p->sizelineinfo; i++)
+ setbvalue(luaH_setnum(L, t, lineinfo[i]), 1);
+ sethvalue(L, L->top, t);
+ }
+ incr_top(L);
+}
+
+
+static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar,
+ Closure *f, void *plight, CallInfo *ci) {
+ int status = 1;
+ if (plight == NULL && f == NULL) {
+ info_tailcall(ar);
+ return status;
+ }
+ for (; *what; what++) {
+ switch (*what) {
+ case 'S': {
+ funcinfo(ar, f, plight);
+ break;
+ }
+ case 'l': {
+ ar->currentline = (ci) ? currentline(L, ci) : -1;
+ break;
+ }
+ case 'u': {
+ ar->nups = f ? f->c.nupvalues : 0;
+ break;
+ }
+ case 'n': {
+ ar->namewhat = (ci) ? getfuncname(L, ci, &ar->name) : NULL;
+ if (ar->namewhat == NULL) {
+ ar->namewhat = ""; /* not found */
+ ar->name = NULL;
+ }
+ break;
+ }
+ case 'L':
+ case 'f': /* handled by lua_getinfo */
+ break;
+ default: status = 0; /* invalid option */
+ }
+ }
+ return status;
+}
+
+
+LUA_API int lua_getinfo (lua_State *L, const char *what, lua_Debug *ar) {
+ int status;
+ Closure *f = NULL;
+ CallInfo *ci = NULL;
+ void *plight = NULL;
+ lua_lock(L);
+ if (*what == '>') {
+ StkId func = L->top - 1;
+ luai_apicheck(L, ttisfunction(func) || ttislightfunction(func));
+ what++; /* skip the '>' */
+ if (ttisfunction(func))
+ f = clvalue(func);
+ else
+ plight = fvalue(func);
+ L->top--; /* pop function */
+ }
+ else if (ar->i_ci != 0) { /* no tail call? */
+ ci = L->base_ci + ar->i_ci;
+ lua_assert(ttisfunction(ci->func) || ttislightfunction(ci->func));
+ if (ttisfunction(ci->func))
+ f = clvalue(ci->func);
+ else
+ plight = fvalue(ci->func);
+ }
+ status = auxgetinfo(L, what, ar, f, plight, ci);
+ if (strchr(what, 'f')) {
+ if (f != NULL)
+ setclvalue(L, L->top, f)
+ else if (plight != NULL)
+ setfvalue(L->top, plight)
+ else
+ setnilvalue(L->top);
+ incr_top(L);
+ }
+ if (strchr(what, 'L'))
+ collectvalidlines(L, f);
+ lua_unlock(L);
+ return status;
+}
+
+
+/*
+** {======================================================
+** Symbolic Execution and code checker
+** =======================================================
+*/
+
+#define check(x) if (!(x)) return 0;
+
+#define checkjump(pt,pc) check(0 <= pc && pc < pt->sizecode)
+
+#define checkreg(pt,reg) check((reg) < (pt)->maxstacksize)
+
+
+
+static int precheck (const Proto *pt) {
+ check(pt->maxstacksize <= MAXSTACK);
+ check(pt->numparams+(pt->is_vararg & VARARG_HASARG) <= pt->maxstacksize);
+ check(!(pt->is_vararg & VARARG_NEEDSARG) ||
+ (pt->is_vararg & VARARG_HASARG));
+ check(pt->sizeupvalues <= pt->nups);
+ check(pt->sizelineinfo == pt->sizecode || pt->sizelineinfo == 0);
+ check(pt->sizecode > 0 && GET_OPCODE(pt->code[pt->sizecode-1]) == OP_RETURN);
+ return 1;
+}
+
+
+#define checkopenop(pt,pc) luaG_checkopenop((pt)->code[(pc)+1])
+
+int luaG_checkopenop (Instruction i) {
+ switch (GET_OPCODE(i)) {
+ case OP_CALL:
+ case OP_TAILCALL:
+ case OP_RETURN:
+ case OP_SETLIST: {
+ check(GETARG_B(i) == 0);
+ return 1;
+ }
+ default: return 0; /* invalid instruction after an open call */
+ }
+}
+
+
+static int checkArgMode (const Proto *pt, int r, enum OpArgMask mode) {
+ switch (mode) {
+ case OpArgN: check(r == 0); break;
+ case OpArgU: break;
+ case OpArgR: checkreg(pt, r); break;
+ case OpArgK:
+ check(ISK(r) ? INDEXK(r) < pt->sizek : r < pt->maxstacksize);
+ break;
+ }
+ return 1;
+}
+
+
+static Instruction symbexec (const Proto *pt, int lastpc, int reg) {
+ int pc;
+ int last; /* stores position of last instruction that changed `reg' */
+ last = pt->sizecode-1; /* points to final return (a `neutral' instruction) */
+ check(precheck(pt));
+ for (pc = 0; pc < lastpc; pc++) {
+ Instruction i = pt->code[pc];
+ OpCode op = GET_OPCODE(i);
+ int a = GETARG_A(i);
+ int b = 0;
+ int c = 0;
+ check(op < NUM_OPCODES);
+ checkreg(pt, a);
+ switch (getOpMode(op)) {
+ case iABC: {
+ b = GETARG_B(i);
+ c = GETARG_C(i);
+ check(checkArgMode(pt, b, getBMode(op)));
+ check(checkArgMode(pt, c, getCMode(op)));
+ break;
+ }
+ case iABx: {
+ b = GETARG_Bx(i);
+ if (getBMode(op) == OpArgK) check(b < pt->sizek);
+ break;
+ }
+ case iAsBx: {
+ b = GETARG_sBx(i);
+ if (getBMode(op) == OpArgR) {
+ int dest = pc+1+b;
+ check(0 <= dest && dest < pt->sizecode);
+ if (dest > 0) {
+ int j;
+ /* check that it does not jump to a setlist count; this
+ is tricky, because the count from a previous setlist may
+ have the same value of an invalid setlist; so, we must
+ go all the way back to the first of them (if any) */
+ for (j = 0; j < dest; j++) {
+ Instruction d = pt->code[dest-1-j];
+ if (!(GET_OPCODE(d) == OP_SETLIST && GETARG_C(d) == 0)) break;
+ }
+ /* if 'j' is even, previous value is not a setlist (even if
+ it looks like one) */
+ check((j&1) == 0);
+ }
+ }
+ break;
+ }
+ }
+ if (testAMode(op)) {
+ if (a == reg) last = pc; /* change register `a' */
+ }
+ if (testTMode(op)) {
+ check(pc+2 < pt->sizecode); /* check skip */
+ check(GET_OPCODE(pt->code[pc+1]) == OP_JMP);
+ }
+ switch (op) {
+ case OP_LOADBOOL: {
+ if (c == 1) { /* does it jump? */
+ check(pc+2 < pt->sizecode); /* check its jump */
+ check(GET_OPCODE(pt->code[pc+1]) != OP_SETLIST ||
+ GETARG_C(pt->code[pc+1]) != 0);
+ }
+ break;
+ }
+ case OP_LOADNIL: {
+ if (a <= reg && reg <= b)
+ last = pc; /* set registers from `a' to `b' */
+ break;
+ }
+ case OP_GETUPVAL:
+ case OP_SETUPVAL: {
+ check(b < pt->nups);
+ break;
+ }
+ case OP_GETGLOBAL:
+ case OP_SETGLOBAL: {
+ check(ttisstring(&pt->k[b]));
+ break;
+ }
+ case OP_SELF: {
+ checkreg(pt, a+1);
+ if (reg == a+1) last = pc;
+ break;
+ }
+ case OP_CONCAT: {
+ check(b < c); /* at least two operands */
+ break;
+ }
+ case OP_TFORLOOP: {
+ check(c >= 1); /* at least one result (control variable) */
+ checkreg(pt, a+2+c); /* space for results */
+ if (reg >= a+2) last = pc; /* affect all regs above its base */
+ break;
+ }
+ case OP_FORLOOP:
+ case OP_FORPREP:
+ checkreg(pt, a+3);
+ /* go through */
+ case OP_JMP: {
+ int dest = pc+1+b;
+ /* not full check and jump is forward and do not skip `lastpc'? */
+ if (reg != NO_REG && pc < dest && dest <= lastpc)
+ pc += b; /* do the jump */
+ break;
+ }
+ case OP_CALL:
+ case OP_TAILCALL: {
+ if (b != 0) {
+ checkreg(pt, a+b-1);
+ }
+ c--; /* c = num. returns */
+ if (c == LUA_MULTRET) {
+ check(checkopenop(pt, pc));
+ }
+ else if (c != 0)
+ checkreg(pt, a+c-1);
+ if (reg >= a) last = pc; /* affect all registers above base */
+ break;
+ }
+ case OP_RETURN: {
+ b--; /* b = num. returns */
+ if (b > 0) checkreg(pt, a+b-1);
+ break;
+ }
+ case OP_SETLIST: {
+ if (b > 0) checkreg(pt, a + b);
+ if (c == 0) {
+ pc++;
+ check(pc < pt->sizecode - 1);
+ }
+ break;
+ }
+ case OP_CLOSURE: {
+ int nup, j;
+ check(b < pt->sizep);
+ nup = pt->p[b]->nups;
+ check(pc + nup < pt->sizecode);
+ for (j = 1; j <= nup; j++) {
+ OpCode op1 = GET_OPCODE(pt->code[pc + j]);
+ check(op1 == OP_GETUPVAL || op1 == OP_MOVE);
+ }
+ if (reg != NO_REG) /* tracing? */
+ pc += nup; /* do not 'execute' these pseudo-instructions */
+ break;
+ }
+ case OP_VARARG: {
+ check((pt->is_vararg & VARARG_ISVARARG) &&
+ !(pt->is_vararg & VARARG_NEEDSARG));
+ b--;
+ if (b == LUA_MULTRET) check(checkopenop(pt, pc));
+ checkreg(pt, a+b-1);
+ break;
+ }
+ default: break;
+ }
+ }
+ return pt->code[last];
+}
+
+#undef check
+#undef checkjump
+#undef checkreg
+
+/* }====================================================== */
+
+
+int luaG_checkcode (const Proto *pt) {
+ return (symbexec(pt, pt->sizecode, NO_REG) != 0);
+}
+
+
+static const char *kname (Proto *p, int c) {
+ if (ISK(c) && ttisstring(&p->k[INDEXK(c)]))
+ return svalue(&p->k[INDEXK(c)]);
+ else
+ return "?";
+}
+
+
+static const char *getobjname (lua_State *L, CallInfo *ci, int stackpos,
+ const char **name) {
+ if (isLua(ci)) { /* a Lua function? */
+ Proto *p = ci_func(ci)->l.p;
+ int pc = currentpc(L, ci);
+ Instruction i;
+ *name = luaF_getlocalname(p, stackpos+1, pc);
+ if (*name) /* is a local? */
+ return "local";
+ i = symbexec(p, pc, stackpos); /* try symbolic execution */
+ lua_assert(pc != -1);
+ switch (GET_OPCODE(i)) {
+ case OP_GETGLOBAL: {
+ int g = GETARG_Bx(i); /* global index */
+ lua_assert(ttisstring(&p->k[g]));
+ *name = svalue(&p->k[g]);
+ return "global";
+ }
+ case OP_MOVE: {
+ int a = GETARG_A(i);
+ int b = GETARG_B(i); /* move from `b' to `a' */
+ if (b < a)
+ return getobjname(L, ci, b, name); /* get name for `b' */
+ break;
+ }
+ case OP_GETTABLE: {
+ int k = GETARG_C(i); /* key index */
+ *name = kname(p, k);
+ return "field";
+ }
+ case OP_GETUPVAL: {
+ int u = GETARG_B(i); /* upvalue index */
+ *name = p->upvalues ? getstr(p->upvalues[u]) : "?";
+ return "upvalue";
+ }
+ case OP_SELF: {
+ int k = GETARG_C(i); /* key index */
+ *name = kname(p, k);
+ return "method";
+ }
+ default: break;
+ }
+ }
+ return NULL; /* no useful name found */
+}
+
+
+static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
+ Instruction i;
+ if ((isLua(ci) && ci->tailcalls > 0) || !isLua(ci - 1))
+ return NULL; /* calling function is not Lua (or is unknown) */
+ ci--; /* calling function */
+ i = ci_func(ci)->l.p->code[currentpc(L, ci)];
+ if (GET_OPCODE(i) == OP_CALL || GET_OPCODE(i) == OP_TAILCALL ||
+ GET_OPCODE(i) == OP_TFORLOOP)
+ return getobjname(L, ci, GETARG_A(i), name);
+ else
+ return NULL; /* no useful name can be found */
+}
+
+
+/* only ANSI way to check whether a pointer points to an array */
+static int isinstack (CallInfo *ci, const TValue *o) {
+ StkId p;
+ for (p = ci->base; p < ci->top; p++)
+ if (o == p) return 1;
+ return 0;
+}
+
+
+void luaG_typeerror (lua_State *L, const TValue *o, const char *op) {
+ const char *name = NULL;
+ const char *t = luaT_typenames[ttype(o)];
+ const char *kind = (isinstack(L->ci, o)) ?
+ getobjname(L, L->ci, cast_int(o - L->base), &name) :
+ NULL;
+ if (kind)
+ luaG_runerror(L, "attempt to %s %s " LUA_QS " (a %s value)",
+ op, kind, name, t);
+ else
+ luaG_runerror(L, "attempt to %s a %s value", op, t);
+}
+
+
+void luaG_concaterror (lua_State *L, StkId p1, StkId p2) {
+ if (ttisstring(p1) || ttisnumber(p1)) p1 = p2;
+ lua_assert(!ttisstring(p1) && !ttisnumber(p1));
+ luaG_typeerror(L, p1, "concatenate");
+}
+
+
+void luaG_aritherror (lua_State *L, const TValue *p1, const TValue *p2) {
+ TValue temp;
+ if (luaV_tonumber(p1, &temp) == NULL)
+ p2 = p1; /* first operand is wrong */
+ luaG_typeerror(L, p2, "perform arithmetic on");
+}
+
+
+int luaG_ordererror (lua_State *L, const TValue *p1, const TValue *p2) {
+ const char *t1 = luaT_typenames[ttype(p1)];
+ const char *t2 = luaT_typenames[ttype(p2)];
+ if (t1[2] == t2[2])
+ luaG_runerror(L, "attempt to compare two %s values", t1);
+ else
+ luaG_runerror(L, "attempt to compare %s with %s", t1, t2);
+ return 0;
+}
+
+
+static void addinfo (lua_State *L, const char *msg) {
+ CallInfo *ci = L->ci;
+ if (isLua(ci)) { /* is Lua code? */
+ char buff[LUA_IDSIZE]; /* add file:line information */
+ int line = currentline(L, ci);
+ luaO_chunkid(buff, getstr(getluaproto(ci)->source), LUA_IDSIZE);
+ luaO_pushfstring(L, "%s:%d: %s", buff, line, msg);
+ }
+}
+
+
+void luaG_errormsg (lua_State *L) {
+ if (L->errfunc != 0) { /* is there an error handling function? */
+ StkId errfunc = restorestack(L, L->errfunc);
+ if (!ttisfunction(errfunc) && !ttislightfunction(errfunc)) luaD_throw(L, LUA_ERRERR);
+ setobjs2s(L, L->top, L->top - 1); /* move argument */
+ setobjs2s(L, L->top - 1, errfunc); /* push function */
+ incr_top(L);
+ luaD_call(L, L->top - 2, 1); /* call it */
+ }
+ luaD_throw(L, LUA_ERRRUN);
+}
+
+
+void luaG_runerror (lua_State *L, const char *fmt, ...) {
+ va_list argp;
+ va_start(argp, fmt);
+ addinfo(L, luaO_pushvfstring(L, fmt, argp));
+ va_end(argp);
+ luaG_errormsg(L);
+}
+
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-larva/blob/148a95ec/libs/elua/elua_base/src/ldebug.h
----------------------------------------------------------------------
diff --git a/libs/elua/elua_base/src/ldebug.h b/libs/elua/elua_base/src/ldebug.h
new file mode 100644
index 0000000..ba28a97
--- /dev/null
+++ b/libs/elua/elua_base/src/ldebug.h
@@ -0,0 +1,33 @@
+/*
+** $Id: ldebug.h,v 2.3.1.1 2007/12/27 13:02:25 roberto Exp $
+** Auxiliary functions from Debug Interface module
+** See Copyright Notice in lua.h
+*/
+
+#ifndef ldebug_h
+#define ldebug_h
+
+
+#include "lstate.h"
+
+
+#define pcRel(pc, p) (cast(int, (pc) - (p)->code) - 1)
+
+#define getline(f,pc) (((f)->lineinfo) ? (f)->lineinfo[pc] : 0)
+
+#define resethookcount(L) (L->hookcount = L->basehookcount)
+
+
+LUAI_FUNC void luaG_typeerror (lua_State *L, const TValue *o,
+ const char *opname);
+LUAI_FUNC void luaG_concaterror (lua_State *L, StkId p1, StkId p2);
+LUAI_FUNC void luaG_aritherror (lua_State *L, const TValue *p1,
+ const TValue *p2);
+LUAI_FUNC int luaG_ordererror (lua_State *L, const TValue *p1,
+ const TValue *p2);
+LUAI_FUNC void luaG_runerror (lua_State *L, const char *fmt, ...);
+LUAI_FUNC void luaG_errormsg (lua_State *L);
+LUAI_FUNC int luaG_checkcode (const Proto *pt);
+LUAI_FUNC int luaG_checkopenop (Instruction i);
+
+#endif
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-larva/blob/148a95ec/libs/elua/elua_base/src/ldo.c
----------------------------------------------------------------------
diff --git a/libs/elua/elua_base/src/ldo.c b/libs/elua/elua_base/src/ldo.c
new file mode 100644
index 0000000..6fcda02
--- /dev/null
+++ b/libs/elua/elua_base/src/ldo.c
@@ -0,0 +1,537 @@
+/*
+** $Id: ldo.c,v 2.38.1.3 2008/01/18 22:31:22 roberto Exp $
+** Stack and Call structure of Lua
+** See Copyright Notice in lua.h
+*/
+
+
+#include <setjmp.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define ldo_c
+#define LUA_CORE
+
+#include "lua.h"
+
+#include "ldebug.h"
+#include "ldo.h"
+#include "lfunc.h"
+#include "lgc.h"
+#include "lmem.h"
+#include "lobject.h"
+#include "lopcodes.h"
+#include "lparser.h"
+#include "lstate.h"
+#include "lstring.h"
+#include "ltable.h"
+#include "ltm.h"
+#include "lundump.h"
+#include "lvm.h"
+#include "lzio.h"
+
+
+
+
+/*
+** {======================================================
+** Error-recovery functions
+** =======================================================
+*/
+
+
+/* chain list of long jump buffers */
+struct lua_longjmp {
+ struct lua_longjmp *previous;
+ luai_jmpbuf b;
+ volatile int status; /* error code */
+};
+
+
+void luaD_seterrorobj (lua_State *L, int errcode, StkId oldtop) {
+ switch (errcode) {
+ case LUA_ERRMEM: {
+ ptrdiff_t oldtopr = savestack(L, oldtop);
+ setsvalue2s(L, restorestack(L, oldtopr), luaS_newliteral(L, MEMERRMSG));
+ break;
+ }
+ case LUA_ERRERR: {
+ ptrdiff_t oldtopr = savestack(L, oldtop);
+ setsvalue2s(L, restorestack(L, oldtopr), luaS_newliteral(L, "error in error handling"));
+ break;
+ }
+ case LUA_ERRSYNTAX:
+ case LUA_ERRRUN: {
+ setobjs2s(L, oldtop, L->top - 1); /* error message on current top */
+ break;
+ }
+ }
+ L->top = oldtop + 1;
+}
+
+
+static void restore_stack_limit (lua_State *L) {
+ lua_assert(L->stack_last - L->stack == L->stacksize - EXTRA_STACK - 1);
+ if (L->size_ci > LUAI_MAXCALLS) { /* there was an overflow? */
+ int inuse = cast_int(L->ci - L->base_ci);
+ if (inuse + 1 < LUAI_MAXCALLS) /* can `undo' overflow? */
+ luaD_reallocCI(L, LUAI_MAXCALLS);
+ }
+}
+
+
+static void resetstack (lua_State *L, int status) {
+ L->ci = L->base_ci;
+ L->base = L->ci->base;
+ luaF_close(L, L->base); /* close eventual pending closures */
+ luaD_seterrorobj(L, status, L->base);
+ L->nCcalls = L->baseCcalls;
+ L->allowhook = 1;
+ restore_stack_limit(L);
+ L->errfunc = 0;
+ L->errorJmp = NULL;
+}
+
+
+void luaD_throw (lua_State *L, int errcode) {
+ unfixedstack(L); /* make sure the fixedstack & block_gc flags get reset. */
+ unset_block_gc(L);
+ if (L->errorJmp) {
+ L->errorJmp->status = errcode;
+ LUAI_THROW(L, L->errorJmp);
+ }
+ else {
+ L->status = cast_byte(errcode);
+ if (G(L)->panic) {
+ resetstack(L, errcode);
+ lua_unlock(L);
+ G(L)->panic(L);
+ }
+ exit(EXIT_FAILURE);
+ }
+}
+
+
+int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud) {
+ struct lua_longjmp lj;
+ lj.status = 0;
+ lj.previous = L->errorJmp; /* chain new error handler */
+ L->errorJmp = &lj;
+ LUAI_TRY(L, &lj,
+ (*f)(L, ud);
+ );
+ L->errorJmp = lj.previous; /* restore old error handler */
+ return lj.status;
+}
+
+/* }====================================================== */
+
+
+static void correctstack (lua_State *L, TValue *oldstack) {
+ CallInfo *ci;
+ GCObject *up;
+ L->top = (L->top - oldstack) + L->stack;
+ for (up = L->openupval; up != NULL; up = up->gch.next)
+ gco2uv(up)->v = (gco2uv(up)->v - oldstack) + L->stack;
+ for (ci = L->base_ci; ci <= L->ci; ci++) {
+ ci->top = (ci->top - oldstack) + L->stack;
+ ci->base = (ci->base - oldstack) + L->stack;
+ ci->func = (ci->func - oldstack) + L->stack;
+ }
+ L->base = (L->base - oldstack) + L->stack;
+}
+
+
+void luaD_reallocstack (lua_State *L, int newsize) {
+ TValue *oldstack = L->stack;
+ int realsize = newsize + 1 + EXTRA_STACK;
+ lua_assert(L->stack_last - L->stack == L->stacksize - EXTRA_STACK - 1);
+ luaM_reallocvector(L, L->stack, L->stacksize, realsize, TValue);
+ L->stacksize = realsize;
+ L->stack_last = L->stack+newsize;
+ correctstack(L, oldstack);
+}
+
+
+void luaD_reallocCI (lua_State *L, int newsize) {
+ CallInfo *oldci = L->base_ci;
+ luaM_reallocvector(L, L->base_ci, L->size_ci, newsize, CallInfo);
+ L->size_ci = newsize;
+ L->ci = (L->ci - oldci) + L->base_ci;
+ L->end_ci = L->base_ci + L->size_ci - 1;
+}
+
+
+void luaD_growstack (lua_State *L, int n) {
+ if (n <= L->stacksize) /* double size is enough? */
+ luaD_reallocstack(L, 2*L->stacksize);
+ else
+ luaD_reallocstack(L, L->stacksize + n);
+}
+
+
+static CallInfo *growCI (lua_State *L) {
+ if (L->size_ci > LUAI_MAXCALLS) /* overflow while handling overflow? */
+ luaD_throw(L, LUA_ERRERR);
+ else {
+ luaD_reallocCI(L, 2*L->size_ci);
+ if (L->size_ci > LUAI_MAXCALLS)
+ luaG_runerror(L, "stack overflow");
+ }
+ return ++L->ci;
+}
+
+
+void luaD_callhook (lua_State *L, int event, int line) {
+ lua_Hook hook = L->hook;
+ if (hook && L->allowhook) {
+ ptrdiff_t top = savestack(L, L->top);
+ ptrdiff_t ci_top = savestack(L, L->ci->top);
+ lua_Debug ar;
+ ar.event = event;
+ ar.currentline = line;
+ if (event == LUA_HOOKTAILRET)
+ ar.i_ci = 0; /* tail call; no debug information about it */
+ else
+ ar.i_ci = cast_int(L->ci - L->base_ci);
+ luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */
+ L->ci->top = L->top + LUA_MINSTACK;
+ lua_assert(L->ci->top <= L->stack_last);
+ L->allowhook = 0; /* cannot call hooks inside a hook */
+ lua_unlock(L);
+ (*hook)(L, &ar);
+ lua_lock(L);
+ lua_assert(!L->allowhook);
+ L->allowhook = 1;
+ L->ci->top = restorestack(L, ci_top);
+ L->top = restorestack(L, top);
+ }
+}
+
+
+static StkId adjust_varargs (lua_State *L, Proto *p, int actual) {
+ int i;
+ int nfixargs = p->numparams;
+#if defined(LUA_COMPAT_VARARG)
+ Table *htab = NULL;
+#endif
+ StkId base, fixed;
+ for (; actual < nfixargs; ++actual)
+ setnilvalue(L->top++);
+#if defined(LUA_COMPAT_VARARG)
+ if (p->is_vararg & VARARG_NEEDSARG) { /* compat. with old-style vararg? */
+ int nvar = actual - nfixargs; /* number of extra arguments */
+ lua_assert(p->is_vararg & VARARG_HASARG);
+ luaC_checkGC(L);
+ htab = luaH_new(L, nvar, 1); /* create `arg' table */
+ sethvalue2s(L, L->top, htab); /* put table on stack */
+ incr_top(L);
+ fixedstack(L);
+ for (i=0; i<nvar; i++) /* put extra arguments into `arg' table */
+ setobj2n(L, luaH_setnum(L, htab, i+1), L->top - 1 - nvar + i);
+ unfixedstack(L);
+ /* store counter in field `n' */
+ setnvalue(luaH_setstr(L, htab, luaS_newliteral(L, "n")), cast_num(nvar));
+ L->top--; /* remove table from stack */
+ }
+#endif
+ /* move fixed parameters to final position */
+ fixed = L->top - actual; /* first fixed argument */
+ base = L->top; /* final position of first argument */
+ for (i=0; i<nfixargs; i++) {
+ setobjs2s(L, L->top++, fixed+i);
+ setnilvalue(fixed+i);
+ }
+#if defined(LUA_COMPAT_VARARG)
+ /* add `arg' parameter */
+ if (htab) {
+ sethvalue(L, L->top++, htab);
+ lua_assert(iswhite(obj2gco(htab)));
+ }
+#endif
+ return base;
+}
+
+
+static StkId tryfuncTM (lua_State *L, StkId func) {
+ const TValue *tm = luaT_gettmbyobj(L, func, TM_CALL);
+ StkId p;
+ ptrdiff_t funcr = savestack(L, func);
+ if (!ttisfunction(tm))
+ luaG_typeerror(L, func, "call");
+ /* Open a hole inside the stack at `func' */
+ for (p = L->top; p > func; p--) setobjs2s(L, p, p-1);
+ incr_top(L);
+ func = restorestack(L, funcr); /* previous call may change stack */
+ setobj2s(L, func, tm); /* tag method is the new function to be called */
+ return func;
+}
+
+
+
+#define inc_ci(L) \
+ ((L->ci == L->end_ci) ? growCI(L) : \
+ (condhardstacktests(luaD_reallocCI(L, L->size_ci)), ++L->ci))
+
+
+int luaD_precall (lua_State *L, StkId func, int nresults) {
+ ptrdiff_t funcr;
+ LClosure *cl = NULL;
+ if (!ttisfunction(func) && !ttislightfunction(func)) /* `func' is not a function? */
+ func = tryfuncTM(L, func); /* check the `function' tag method */
+ funcr = savestack(L, func);
+ if (ttisfunction(func))
+ cl = &clvalue(func)->l;
+ L->ci->savedpc = L->savedpc;
+ if (cl && !cl->isC) { /* Lua function? prepare its call */
+ CallInfo *ci;
+ StkId st, base;
+ Proto *p = cl->p;
+ luaD_checkstack(L, p->maxstacksize);
+ func = restorestack(L, funcr);
+ if (!p->is_vararg) { /* no varargs? */
+ base = func + 1;
+ if (L->top > base + p->numparams)
+ L->top = base + p->numparams;
+ }
+ else { /* vararg function */
+ int nargs = cast_int(L->top - func) - 1;
+ base = adjust_varargs(L, p, nargs);
+ func = restorestack(L, funcr); /* previous call may change the stack */
+ }
+ ci = inc_ci(L); /* now `enter' new function */
+ ci->func = func;
+ L->base = ci->base = base;
+ ci->top = L->base + p->maxstacksize;
+ lua_assert(ci->top <= L->stack_last);
+ L->savedpc = p->code; /* starting point */
+ ci->tailcalls = 0;
+ ci->nresults = nresults;
+ for (st = L->top; st < ci->top; st++)
+ setnilvalue(st);
+ L->top = ci->top;
+ if (L->hookmask & LUA_MASKCALL) {
+ L->savedpc++; /* hooks assume 'pc' is already incremented */
+ luaD_callhook(L, LUA_HOOKCALL, -1);
+ L->savedpc--; /* correct 'pc' */
+ }
+ return PCRLUA;
+ }
+ else { /* if is a C function, call it */
+ CallInfo *ci;
+ int n;
+ luaD_checkstack(L, LUA_MINSTACK); /* ensure minimum stack size */
+ ci = inc_ci(L); /* now `enter' new function */
+ ci->func = restorestack(L, funcr);
+ L->base = ci->base = ci->func + 1;
+ ci->top = L->top + LUA_MINSTACK;
+ lua_assert(ci->top <= L->stack_last);
+ ci->nresults = nresults;
+ if (L->hookmask & LUA_MASKCALL)
+ luaD_callhook(L, LUA_HOOKCALL, -1);
+ lua_unlock(L);
+ if (ttisfunction(ci->func))
+ n = (*curr_func(L)->c.f)(L); /* do the actual call */
+ else
+ n = ((lua_CFunction)fvalue(ci->func))(L); /* do the actual call */
+ lua_lock(L);
+ if (n < 0) /* yielding? */
+ return PCRYIELD;
+ else {
+ luaD_poscall(L, L->top - n);
+ return PCRC;
+ }
+ }
+}
+
+
+static StkId callrethooks (lua_State *L, StkId firstResult) {
+ ptrdiff_t fr = savestack(L, firstResult); /* next call may change stack */
+ luaD_callhook(L, LUA_HOOKRET, -1);
+ if (f_isLua(L->ci)) { /* Lua function? */
+ while ((L->hookmask & LUA_MASKRET) && L->ci->tailcalls--) /* tail calls */
+ luaD_callhook(L, LUA_HOOKTAILRET, -1);
+ }
+ return restorestack(L, fr);
+}
+
+
+int luaD_poscall (lua_State *L, StkId firstResult) {
+ StkId res;
+ int wanted, i;
+ CallInfo *ci;
+ if (L->hookmask & LUA_MASKRET)
+ firstResult = callrethooks(L, firstResult);
+ ci = L->ci--;
+ res = ci->func; /* res == final position of 1st result */
+ wanted = ci->nresults;
+ L->base = (ci - 1)->base; /* restore base */
+ L->savedpc = (ci - 1)->savedpc; /* restore savedpc */
+ /* move results to correct place */
+ for (i = wanted; i != 0 && firstResult < L->top; i--)
+ setobjs2s(L, res++, firstResult++);
+ while (i-- > 0)
+ setnilvalue(res++);
+ L->top = res;
+ return (wanted - LUA_MULTRET); /* 0 iff wanted == LUA_MULTRET */
+}
+
+
+/*
+** Call a function (C or Lua). The function to be called is at *func.
+** The arguments are on the stack, right after the function.
+** When returns, all the results are on the stack, starting at the original
+** function position.
+*/
+void luaD_call (lua_State *L, StkId func, int nResults) {
+ if (++L->nCcalls >= LUAI_MAXCCALLS) {
+ if (L->nCcalls == LUAI_MAXCCALLS)
+ luaG_runerror(L, "C stack overflow");
+ else if (L->nCcalls >= (LUAI_MAXCCALLS + (LUAI_MAXCCALLS>>3)))
+ luaD_throw(L, LUA_ERRERR); /* error while handing stack error */
+ }
+ if (luaD_precall(L, func, nResults) == PCRLUA) /* is a Lua function? */
+ luaV_execute(L, 1); /* call it */
+ L->nCcalls--;
+ luaC_checkGC(L);
+}
+
+
+static void resume (lua_State *L, void *ud) {
+ StkId firstArg = cast(StkId, ud);
+ CallInfo *ci = L->ci;
+ if (L->status == 0) { /* start coroutine? */
+ lua_assert(ci == L->base_ci && firstArg > L->base);
+ if (luaD_precall(L, firstArg - 1, LUA_MULTRET) != PCRLUA)
+ return;
+ }
+ else { /* resuming from previous yield */
+ lua_assert(L->status == LUA_YIELD);
+ L->status = 0;
+ if (!f_isLua(ci)) { /* `common' yield? */
+ /* finish interrupted execution of `OP_CALL' */
+ lua_assert(GET_OPCODE(*((ci-1)->savedpc - 1)) == OP_CALL ||
+ GET_OPCODE(*((ci-1)->savedpc - 1)) == OP_TAILCALL);
+ if (luaD_poscall(L, firstArg)) /* complete it... */
+ L->top = L->ci->top; /* and correct top if not multiple results */
+ }
+ else /* yielded inside a hook: just continue its execution */
+ L->base = L->ci->base;
+ }
+ luaV_execute(L, cast_int(L->ci - L->base_ci));
+}
+
+
+static int resume_error (lua_State *L, const char *msg) {
+ L->top = L->ci->base;
+ setsvalue2s(L, L->top, luaS_new(L, msg));
+ incr_top(L);
+ lua_unlock(L);
+ return LUA_ERRRUN;
+}
+
+
+LUA_API int lua_resume (lua_State *L, int nargs) {
+ int status;
+ lua_lock(L);
+ if (L->status != LUA_YIELD && (L->status != 0 || L->ci != L->base_ci))
+ return resume_error(L, "cannot resume non-suspended coroutine");
+ if (L->nCcalls >= LUAI_MAXCCALLS)
+ return resume_error(L, "C stack overflow");
+ luai_userstateresume(L, nargs);
+ lua_assert(L->errfunc == 0);
+ L->baseCcalls = ++L->nCcalls;
+ status = luaD_rawrunprotected(L, resume, L->top - nargs);
+ if (status != 0) { /* error? */
+ L->status = cast_byte(status); /* mark thread as `dead' */
+ luaD_seterrorobj(L, status, L->top);
+ L->ci->top = L->top;
+ }
+ else {
+ lua_assert(L->nCcalls == L->baseCcalls);
+ status = L->status;
+ }
+ --L->nCcalls;
+ lua_unlock(L);
+ return status;
+}
+
+
+LUA_API int lua_yield (lua_State *L, int nresults) {
+ luai_userstateyield(L, nresults);
+ lua_lock(L);
+ if (L->nCcalls > L->baseCcalls)
+ luaG_runerror(L, "attempt to yield across metamethod/C-call boundary");
+ L->base = L->top - nresults; /* protect stack slots below */
+ L->status = LUA_YIELD;
+ lua_unlock(L);
+ return -1;
+}
+
+
+int luaD_pcall (lua_State *L, Pfunc func, void *u,
+ ptrdiff_t old_top, ptrdiff_t ef) {
+ int status;
+ unsigned short oldnCcalls = L->nCcalls;
+ ptrdiff_t old_ci = saveci(L, L->ci);
+ lu_byte old_allowhooks = L->allowhook;
+ ptrdiff_t old_errfunc = L->errfunc;
+ L->errfunc = ef;
+ status = luaD_rawrunprotected(L, func, u);
+ if (status != 0) { /* an error occurred? */
+ StkId oldtop = restorestack(L, old_top);
+ luaF_close(L, oldtop); /* close eventual pending closures */
+ luaD_seterrorobj(L, status, oldtop);
+ L->nCcalls = oldnCcalls;
+ L->ci = restoreci(L, old_ci);
+ L->base = L->ci->base;
+ L->savedpc = L->ci->savedpc;
+ L->allowhook = old_allowhooks;
+ restore_stack_limit(L);
+ }
+ L->errfunc = old_errfunc;
+ return status;
+}
+
+
+
+/*
+** Execute a protected parser.
+*/
+struct SParser { /* data to `f_parser' */
+ ZIO *z;
+ Mbuffer buff; /* buffer to be used by the scanner */
+ const char *name;
+};
+
+static void f_parser (lua_State *L, void *ud) {
+ int i;
+ Proto *tf;
+ Closure *cl;
+ struct SParser *p = cast(struct SParser *, ud);
+ int c = luaZ_lookahead(p->z);
+ luaC_checkGC(L);
+ set_block_gc(L); /* stop collector during parsing */
+ tf = ((c == LUA_SIGNATURE[0]) ? luaU_undump : luaY_parser)(L, p->z,
+ &p->buff, p->name);
+ cl = luaF_newLclosure(L, tf->nups, hvalue(gt(L)));
+ cl->l.p = tf;
+ for (i = 0; i < tf->nups; i++) /* initialize eventual upvalues */
+ cl->l.upvals[i] = luaF_newupval(L);
+ setclvalue(L, L->top, cl);
+ incr_top(L);
+ unset_block_gc(L);
+}
+
+
+int luaD_protectedparser (lua_State *L, ZIO *z, const char *name) {
+ struct SParser p;
+ int status;
+ p.z = z; p.name = name;
+ luaZ_initbuffer(L, &p.buff);
+ status = luaD_pcall(L, f_parser, &p, savestack(L, L->top), L->errfunc);
+ luaZ_freebuffer(L, &p.buff);
+ return status;
+}
+
+
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-larva/blob/148a95ec/libs/elua/elua_base/src/ldo.h
----------------------------------------------------------------------
diff --git a/libs/elua/elua_base/src/ldo.h b/libs/elua/elua_base/src/ldo.h
new file mode 100644
index 0000000..98fddac
--- /dev/null
+++ b/libs/elua/elua_base/src/ldo.h
@@ -0,0 +1,57 @@
+/*
+** $Id: ldo.h,v 2.7.1.1 2007/12/27 13:02:25 roberto Exp $
+** Stack and Call structure of Lua
+** See Copyright Notice in lua.h
+*/
+
+#ifndef ldo_h
+#define ldo_h
+
+
+#include "lobject.h"
+#include "lstate.h"
+#include "lzio.h"
+
+
+#define luaD_checkstack(L,n) \
+ if ((char *)L->stack_last - (char *)L->top <= (n)*(int)sizeof(TValue)) \
+ luaD_growstack(L, n); \
+ else condhardstacktests(luaD_reallocstack(L, L->stacksize - EXTRA_STACK - 1));
+
+
+#define incr_top(L) {luaD_checkstack(L,1); L->top++;}
+
+#define savestack(L,p) ((char *)(p) - (char *)L->stack)
+#define restorestack(L,n) ((TValue *)((char *)L->stack + (n)))
+
+#define saveci(L,p) ((char *)(p) - (char *)L->base_ci)
+#define restoreci(L,n) ((CallInfo *)((char *)L->base_ci + (n)))
+
+
+/* results from luaD_precall */
+#define PCRLUA 0 /* initiated a call to a Lua function */
+#define PCRC 1 /* did a call to a C function */
+#define PCRYIELD 2 /* C funtion yielded */
+
+
+/* type of protected functions, to be ran by `runprotected' */
+typedef void (*Pfunc) (lua_State *L, void *ud);
+
+LUAI_FUNC int luaD_protectedparser (lua_State *L, ZIO *z, const char *name);
+LUAI_FUNC void luaD_callhook (lua_State *L, int event, int line);
+LUAI_FUNC int luaD_precall (lua_State *L, StkId func, int nresults);
+LUAI_FUNC void luaD_call (lua_State *L, StkId func, int nResults);
+LUAI_FUNC int luaD_pcall (lua_State *L, Pfunc func, void *u,
+ ptrdiff_t oldtop, ptrdiff_t ef);
+LUAI_FUNC int luaD_poscall (lua_State *L, StkId firstResult);
+LUAI_FUNC void luaD_reallocCI (lua_State *L, int newsize);
+LUAI_FUNC void luaD_reallocstack (lua_State *L, int newsize);
+LUAI_FUNC void luaD_growstack (lua_State *L, int n);
+
+LUAI_FUNC void luaD_throw (lua_State *L, int errcode);
+LUAI_FUNC int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud);
+
+LUAI_FUNC void luaD_seterrorobj (lua_State *L, int errcode, StkId oldtop);
+
+#endif
+
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-larva/blob/148a95ec/libs/elua/elua_base/src/ldump.c
----------------------------------------------------------------------
diff --git a/libs/elua/elua_base/src/ldump.c b/libs/elua/elua_base/src/ldump.c
new file mode 100644
index 0000000..7930940
--- /dev/null
+++ b/libs/elua/elua_base/src/ldump.c
@@ -0,0 +1,321 @@
+/*
+** $Id: ldump.c,v 2.8.1.1 2007/12/27 13:02:25 roberto Exp $
+** save precompiled Lua chunks
+** See Copyright Notice in lua.h
+*/
+
+#include <stddef.h>
+#include <sys/types.h>
+#include <string.h>
+
+#define ldump_c
+#define LUA_CORE
+
+#include "lua.h"
+
+#include "lobject.h"
+#include "lstate.h"
+#include "lundump.h"
+
+typedef struct {
+ lua_State* L;
+ lua_Writer writer;
+ void* data;
+ int strip;
+ int status;
+ DumpTargetInfo target;
+ size_t wrote;
+} DumpState;
+
+#define DumpMem(b,n,size,D) DumpBlock(b,(n)*(size),D)
+#define DumpVar(x,D) DumpMem(&x,1,sizeof(x),D)
+
+static void DumpBlock(const void* b, size_t size, DumpState* D)
+{
+ if (D->status==0)
+ {
+ lua_unlock(D->L);
+ D->status=(*D->writer)(D->L,b,size,D->data);
+ D->wrote+=size;
+ lua_lock(D->L);
+ }
+}
+
+static void DumpChar(int y, DumpState* D)
+{
+ char x=(char)y;
+ DumpVar(x,D);
+}
+
+static void Align4(DumpState *D)
+{
+ while(D->wrote&3)
+ DumpChar(0,D);
+}
+
+static void MaybeByteSwap(char *number, size_t numbersize, DumpState *D)
+{
+ int x=1;
+ int platform_little_endian = *(char*)&x;
+ if (platform_little_endian != D->target.little_endian)
+ {
+ unsigned long i;
+ for (i=0; i<numbersize/2; i++)
+ {
+ char temp = number[i];
+ number[i] = number[numbersize-1-i];
+ number[numbersize-1-i] = temp;
+ }
+ }
+}
+
+static void DumpIntWithSize(int x, int sizeof_int, DumpState* D)
+{
+ /* dump signed integer */
+ switch(sizeof_int) {
+ case 1: {
+ if (x>0x7F || x<(-0x80)) D->status=LUA_ERR_CC_INTOVERFLOW;
+ DumpChar(x,D);
+ } break;
+ case 2: {
+ if (x>0x7FFF || x<(-0x8000)) D->status=LUA_ERR_CC_INTOVERFLOW;
+ int16_t y=(int16_t)x;
+ MaybeByteSwap((char*)&y,2,D);
+ DumpVar(y,D);
+ } break;
+ case 4: {
+ /* Need to reduce bounds by 1 to avoid messing 32-bit compilers up */
+ if (x>0x7FFFFFFE || x<(-0x7FFFFFFF)) D->status=LUA_ERR_CC_INTOVERFLOW;
+ int32_t y=(int32_t)x;
+ MaybeByteSwap((char*)&y,4,D);
+ DumpVar(y,D);
+ } break;
+ default: lua_assert(0);
+ }
+}
+
+static void DumpInt(int x, DumpState* D)
+{
+ DumpIntWithSize(x,D->target.sizeof_int,D);
+}
+
+static void DumpSize(uint32_t x, DumpState* D)
+{
+ /* dump unsigned integer */
+ switch(D->target.sizeof_strsize_t) {
+ case 1: {
+ if (x>0xFF) D->status=LUA_ERR_CC_INTOVERFLOW;
+ DumpChar(x,D);
+ } break;
+ case 2: {
+ if (x>0xFFFF) D->status=LUA_ERR_CC_INTOVERFLOW;
+ uint16_t y=(uint16_t)x;
+ MaybeByteSwap((char*)&y,2,D);
+ DumpVar(y,D);
+ } break;
+ case 4: {
+ /* Reduce bounds to avoid messing 32-bit compilers up */
+ if (x>0xFFFFFFFE) D->status=LUA_ERR_CC_INTOVERFLOW;
+ uint32_t y=x;
+ MaybeByteSwap((char*)&y,4,D);
+ DumpVar(y,D);
+ } break;
+ default: lua_assert(0);
+ }
+}
+
+static void DumpNumber(lua_Number x, DumpState* D)
+{
+#if defined( LUA_NUMBER_INTEGRAL ) && !defined( LUA_CROSS_COMPILER )
+ DumpIntWithSize(x,D->target.sizeof_lua_Number,D);
+#else // #if defined( LUA_NUMBER_INTEGRAL ) && !defined( LUA_CROSS_COMPILER )
+ if (D->target.lua_Number_integral)
+ {
+ if (((float)(int)x)!=x) D->status=LUA_ERR_CC_NOTINTEGER;
+ DumpIntWithSize(x,D->target.sizeof_lua_Number,D);
+ }
+ else
+ {
+ switch(D->target.sizeof_lua_Number)
+ {
+ /* do we need bounds checking? */
+ case 4: {
+ float y=x;
+ MaybeByteSwap((char*)&y,4,D);
+ DumpVar(y,D);
+ } break;
+ case 8: {
+ double y=x;
+ // ARM FPA mode: keep endianness, but swap high and low parts of the
+ // memory representation. This is the default compilation mode for ARM
+ // targets with non-EABI gcc
+ if(D->target.is_arm_fpa)
+ {
+ char *pnum=(char*)&y, temp[4];
+ memcpy(temp,pnum,4);
+ memcpy(pnum,pnum+4,4);
+ memcpy(pnum+4,temp,4);
+ }
+ MaybeByteSwap((char*)&y,8,D);
+ DumpVar(y,D);
+ } break;
+ default: lua_assert(0);
+ }
+ }
+#endif // #if defined( LUA_NUMBER_INTEGRAL ) && !defined( LUA_CROSS_COMPILER )
+}
+
+static void DumpCode(const Proto *f, DumpState* D)
+{
+ DumpInt(f->sizecode,D);
+ char buf[10];
+ int i;
+ Align4(D);
+ for (i=0; i<f->sizecode; i++)
+ {
+ memcpy(buf,&f->code[i],sizeof(Instruction));
+ MaybeByteSwap(buf,sizeof(Instruction),D);
+ DumpBlock(buf,sizeof(Instruction),D);
+ }
+}
+
+static void DumpString(const TString* s, DumpState* D)
+{
+ if (s==NULL || getstr(s)==NULL)
+ {
+ strsize_t size=0;
+ DumpSize(size,D);
+ }
+ else
+ {
+ strsize_t size=( strsize_t )s->tsv.len+1; /* include trailing '\0' */
+ DumpSize(size,D);
+ DumpBlock(getstr(s),size,D);
+ }
+}
+
+static void DumpFunction(const Proto* f, const TString* p, DumpState* D);
+
+static void DumpConstants(const Proto* f, DumpState* D)
+{
+ int i,n=f->sizek;
+ DumpInt(n,D);
+ for (i=0; i<n; i++)
+ {
+ const TValue* o=&f->k[i];
+ DumpChar(ttype(o),D);
+ switch (ttype(o))
+ {
+ case LUA_TNIL:
+ break;
+ case LUA_TBOOLEAN:
+ DumpChar(bvalue(o),D);
+ break;
+ case LUA_TNUMBER:
+ DumpNumber(nvalue(o),D);
+ break;
+ case LUA_TSTRING:
+ DumpString(rawtsvalue(o),D);
+ break;
+ default:
+ lua_assert(0); /* cannot happen */
+ break;
+ }
+ }
+ n=f->sizep;
+ DumpInt(n,D);
+ for (i=0; i<n; i++) DumpFunction(f->p[i],f->source,D);
+}
+
+static void DumpDebug(const Proto* f, DumpState* D)
+{
+ int i,n;
+ n= (D->strip) ? 0 : f->sizelineinfo;
+ DumpInt(n,D);
+ Align4(D);
+ for (i=0; i<n; i++)
+ {
+ DumpInt(f->lineinfo[i],D);
+ }
+
+ n= (D->strip) ? 0 : f->sizelocvars;
+ DumpInt(n,D);
+ for (i=0; i<n; i++)
+ {
+ DumpString(f->locvars[i].varname,D);
+ DumpInt(f->locvars[i].startpc,D);
+ DumpInt(f->locvars[i].endpc,D);
+ }
+
+ n= (D->strip) ? 0 : f->sizeupvalues;
+ DumpInt(n,D);
+ for (i=0; i<n; i++) DumpString(f->upvalues[i],D);
+}
+
+static void DumpFunction(const Proto* f, const TString* p, DumpState* D)
+{
+ DumpString((f->source==p || D->strip) ? NULL : f->source,D);
+ DumpInt(f->linedefined,D);
+ DumpInt(f->lastlinedefined,D);
+ DumpChar(f->nups,D);
+ DumpChar(f->numparams,D);
+ DumpChar(f->is_vararg,D);
+ DumpChar(f->maxstacksize,D);
+ DumpCode(f,D);
+ DumpConstants(f,D);
+ DumpDebug(f,D);
+}
+
+static void DumpHeader(DumpState* D)
+{
+ char buf[LUAC_HEADERSIZE];
+ char *h=buf;
+
+ /* This code must be kept in sync wiht luaU_header */
+ memcpy(h,LUA_SIGNATURE,sizeof(LUA_SIGNATURE)-1);
+ h+=sizeof(LUA_SIGNATURE)-1;
+ *h++=(char)LUAC_VERSION;
+ *h++=(char)LUAC_FORMAT;
+ *h++=(char)D->target.little_endian;
+ *h++=(char)D->target.sizeof_int;
+ *h++=(char)D->target.sizeof_strsize_t;
+ *h++=(char)sizeof(Instruction);
+ *h++=(char)D->target.sizeof_lua_Number;
+ *h++=(char)D->target.lua_Number_integral;
+
+ DumpBlock(buf,LUAC_HEADERSIZE,D);
+}
+
+/*
+** dump Lua function as precompiled chunk with specified target
+*/
+int luaU_dump_crosscompile (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip, DumpTargetInfo target)
+{
+ DumpState D;
+ D.L=L;
+ D.writer=w;
+ D.data=data;
+ D.strip=strip;
+ D.status=0;
+ D.target=target;
+ D.wrote=0;
+ DumpHeader(&D);
+ DumpFunction(f,NULL,&D);
+ return D.status;
+}
+
+/*
+ ** dump Lua function as precompiled chunk with local machine as target
+ */
+int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip)
+{
+ DumpTargetInfo target;
+ int test=1;
+ target.little_endian=*(char*)&test;
+ target.sizeof_int=sizeof(int);
+ target.sizeof_strsize_t=sizeof(strsize_t);
+ target.sizeof_lua_Number=sizeof(lua_Number);
+ target.lua_Number_integral=(((lua_Number)0.5)==0);
+ target.is_arm_fpa=0;
+ return luaU_dump_crosscompile(L,f,w,data,strip,target);
+}
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-larva/blob/148a95ec/libs/elua/elua_base/src/legc.c
----------------------------------------------------------------------
diff --git a/libs/elua/elua_base/src/legc.c b/libs/elua/elua_base/src/legc.c
new file mode 100644
index 0000000..bbef290
--- /dev/null
+++ b/libs/elua/elua_base/src/legc.c
@@ -0,0 +1,12 @@
+// Lua EGC (Emergeny Garbage Collector) interface
+
+#include "legc.h"
+#include "lstate.h"
+
+void legc_set_mode(lua_State *L, int mode, unsigned limit) {
+ global_State *g = G(L);
+
+ g->egcmode = mode;
+ g->memlimit = limit;
+}
+
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-larva/blob/148a95ec/libs/elua/elua_base/src/legc.h
----------------------------------------------------------------------
diff --git a/libs/elua/elua_base/src/legc.h b/libs/elua/elua_base/src/legc.h
new file mode 100644
index 0000000..a0d9dde
--- /dev/null
+++ b/libs/elua/elua_base/src/legc.h
@@ -0,0 +1,17 @@
+// Lua EGC (Emergeny Garbage Collector) interface
+
+#ifndef __LEGC_H__
+#define __LEGC_H__
+
+#include "lstate.h"
+
+// EGC operations modes
+#define EGC_NOT_ACTIVE 0 // EGC disabled
+#define EGC_ON_ALLOC_FAILURE 1 // run EGC on allocation failure
+#define EGC_ON_MEM_LIMIT 2 // run EGC when an upper memory limit is hit
+#define EGC_ALWAYS 4 // always run EGC before an allocation
+
+void legc_set_mode(lua_State *L, int mode, unsigned limit);
+
+#endif
+
http://git-wip-us.apache.org/repos/asf/incubator-mynewt-larva/blob/148a95ec/libs/elua/elua_base/src/lfunc.c
----------------------------------------------------------------------
diff --git a/libs/elua/elua_base/src/lfunc.c b/libs/elua/elua_base/src/lfunc.c
new file mode 100644
index 0000000..3f7a785
--- /dev/null
+++ b/libs/elua/elua_base/src/lfunc.c
@@ -0,0 +1,176 @@
+/*
+** $Id: lfunc.c,v 2.12.1.2 2007/12/28 14:58:43 roberto Exp $
+** Auxiliary functions to manipulate prototypes and closures
+** See Copyright Notice in lua.h
+*/
+
+
+#include <stddef.h>
+
+#define lfunc_c
+#define LUA_CORE
+
+#include "lua.h"
+
+#include "lfunc.h"
+#include "lgc.h"
+#include "lmem.h"
+#include "lobject.h"
+#include "lstate.h"
+
+
+
+Closure *luaF_newCclosure (lua_State *L, int nelems, Table *e) {
+ Closure *c = cast(Closure *, luaM_malloc(L, sizeCclosure(nelems)));
+ luaC_link(L, obj2gco(c), LUA_TFUNCTION);
+ c->c.isC = 1;
+ c->c.env = e;
+ c->c.nupvalues = cast_byte(nelems);
+ return c;
+}
+
+
+Closure *luaF_newLclosure (lua_State *L, int nelems, Table *e) {
+ Closure *c = cast(Closure *, luaM_malloc(L, sizeLclosure(nelems)));
+ luaC_link(L, obj2gco(c), LUA_TFUNCTION);
+ c->l.isC = 0;
+ c->l.env = e;
+ c->l.nupvalues = cast_byte(nelems);
+ while (nelems--) c->l.upvals[nelems] = NULL;
+ return c;
+}
+
+
+UpVal *luaF_newupval (lua_State *L) {
+ UpVal *uv = luaM_new(L, UpVal);
+ luaC_link(L, obj2gco(uv), LUA_TUPVAL);
+ uv->v = &uv->u.value;
+ setnilvalue(uv->v);
+ return uv;
+}
+
+
+UpVal *luaF_findupval (lua_State *L, StkId level) {
+ global_State *g = G(L);
+ GCObject **pp = &L->openupval;
+ UpVal *p;
+ UpVal *uv;
+ while (*pp != NULL && (p = ngcotouv(*pp))->v >= level) {
+ lua_assert(p->v != &p->u.value);
+ if (p->v == level) { /* found a corresponding upvalue? */
+ if (isdead(g, obj2gco(p))) /* is it dead? */
+ changewhite(obj2gco(p)); /* ressurect it */
+ return p;
+ }
+ pp = &p->next;
+ }
+ uv = luaM_new(L, UpVal); /* not found: create a new one */
+ uv->tt = LUA_TUPVAL;
+ uv->v = level; /* current value lives in the stack */
+ uv->next = *pp; /* chain it in the proper position */
+ *pp = obj2gco(uv);
+ uv->u.l.prev = &g->uvhead; /* double link it in `uvhead' list */
+ uv->u.l.next = g->uvhead.u.l.next;
+ uv->u.l.next->u.l.prev = uv;
+ g->uvhead.u.l.next = uv;
+ luaC_marknew(L, obj2gco(uv));
+ lua_assert(uv->u.l.next->u.l.prev == uv && uv->u.l.prev->u.l.next == uv);
+ return uv;
+}
+
+
+static void unlinkupval (UpVal *uv) {
+ lua_assert(uv->u.l.next->u.l.prev == uv && uv->u.l.prev->u.l.next == uv);
+ uv->u.l.next->u.l.prev = uv->u.l.prev; /* remove from `uvhead' list */
+ uv->u.l.prev->u.l.next = uv->u.l.next;
+}
+
+
+void luaF_freeupval (lua_State *L, UpVal *uv) {
+ if (uv->v != &uv->u.value) /* is it open? */
+ unlinkupval(uv); /* remove from open list */
+ luaM_free(L, uv); /* free upvalue */
+}
+
+
+void luaF_close (lua_State *L, StkId level) {
+ UpVal *uv;
+ global_State *g = G(L);
+ while (L->openupval != NULL && (uv = ngcotouv(L->openupval))->v >= level) {
+ GCObject *o = obj2gco(uv);
+ lua_assert(!isblack(o) && uv->v != &uv->u.value);
+ L->openupval = uv->next; /* remove from `open' list */
+ if (isdead(g, o))
+ luaF_freeupval(L, uv); /* free upvalue */
+ else {
+ unlinkupval(uv);
+ setobj(L, &uv->u.value, uv->v);
+ uv->v = &uv->u.value; /* now current value lives here */
+ luaC_linkupval(L, uv); /* link upvalue into `gcroot' list */
+ }
+ }
+}
+
+
+Proto *luaF_newproto (lua_State *L) {
+ Proto *f = luaM_new(L, Proto);
+ luaC_link(L, obj2gco(f), LUA_TPROTO);
+ f->k = NULL;
+ f->sizek = 0;
+ f->p = NULL;
+ f->sizep = 0;
+ f->code = NULL;
+ f->sizecode = 0;
+ f->sizelineinfo = 0;
+ f->sizeupvalues = 0;
+ f->nups = 0;
+ f->upvalues = NULL;
+ f->numparams = 0;
+ f->is_vararg = 0;
+ f->maxstacksize = 0;
+ f->lineinfo = NULL;
+ f->sizelocvars = 0;
+ f->locvars = NULL;
+ f->linedefined = 0;
+ f->lastlinedefined = 0;
+ f->source = NULL;
+ return f;
+}
+
+
+void luaF_freeproto (lua_State *L, Proto *f) {
+ luaM_freearray(L, f->p, f->sizep, Proto *);
+ luaM_freearray(L, f->k, f->sizek, TValue);
+ luaM_freearray(L, f->locvars, f->sizelocvars, struct LocVar);
+ luaM_freearray(L, f->upvalues, f->sizeupvalues, TString *);
+ if (!proto_is_readonly(f)) {
+ luaM_freearray(L, f->code, f->sizecode, Instruction);
+ luaM_freearray(L, f->lineinfo, f->sizelineinfo, int);
+ }
+ luaM_free(L, f);
+}
+
+
+void luaF_freeclosure (lua_State *L, Closure *c) {
+ int size = (c->c.isC) ? sizeCclosure(c->c.nupvalues) :
+ sizeLclosure(c->l.nupvalues);
+ luaM_freemem(L, c, size);
+}
+
+
+/*
+** Look for n-th local variable at line `line' in function `func'.
+** Returns NULL if not found.
+*/
+const char *luaF_getlocalname (const Proto *f, int local_number, int pc) {
+ int i;
+ for (i = 0; i<f->sizelocvars && f->locvars[i].startpc <= pc; i++) {
+ if (pc < f->locvars[i].endpc) { /* is variable active? */
+ local_number--;
+ if (local_number == 0)
+ return getstr(f->locvars[i].varname);
+ }
+ }
+ return NULL; /* not found */
+}
+