static int assemble_method_error(
BytecodeConstantPool* cp, BytecodeBuffer* buffer, Symbol* errorName, Symbol* message, TRAPS) {
Symbol* init = vmSymbols::object_initializer_name();
Symbol* sig = vmSymbols::string_void_signature();
BytecodeAssembler assem(buffer, cp);
assem._new(errorName);
assem.dup();
assem.load_string(message);
assem.invokespecial(errorName, init, sig);
assem.athrow();
return 3; // max stack size: [ exception, exception, string ]
}
int main(int argc, char *argv[]) {
//Initializes an instance of the Assembler class
Assembler assem(argc, argv);
// Establishes the location of the labels
assem.PassI();
// Displays the symbol table
assem.DisplaySymbolTable();
// Outputs the assembly code translation
assem.PassII();
// Displays Errors
assem.DisplayErrorMessages();
//Runs the emulator (if no errors exist)
assem.RunEmulator();
return 0;
}
uint8_t* initializePatchpoint2(uint8_t* start_addr, uint8_t* slowpath_start, uint8_t* end_addr, StackInfo stack_info,
const std::unordered_set<int>& live_outs) {
assert(start_addr < slowpath_start);
static const int INITIAL_CALL_SIZE = 13;
assert(end_addr > slowpath_start + INITIAL_CALL_SIZE);
#ifndef NDEBUG
// if (VERBOSITY()) printf("initializing patchpoint at %p - %p\n", addr, addr + size);
// for (int i = 0; i < size; i++) {
// printf("%02x ", *(addr + i));
//}
// printf("\n");
// Check the exact form of the patchpoint call.
// It's important to make sure that the only live registers
// are the ones that are used as arguments; ie it wouldn't
// matter if the call happened on %r10 instead of %r11,
// but it would matter if there wasn't a mov immediately before
// the call, since then %r11 would be live and we couldn't
// use it as a temporary.
// mov $imm, %r11:
ASSERT(start_addr[0] == 0x49, "%x", start_addr[0]);
assert(start_addr[1] == 0xbb);
// 8 bytes of the addr
// callq *%r11:
assert(start_addr[10] == 0x41);
assert(start_addr[11] == 0xff);
assert(start_addr[12] == 0xd3);
int i = INITIAL_CALL_SIZE;
while (*(start_addr + i) == 0x66 || *(start_addr + i) == 0x0f || *(start_addr + i) == 0x2e)
i++;
assert(*(start_addr + i) == 0x90 || *(start_addr + i) == 0x1f);
#endif
void* call_addr = *(void**)&start_addr[2];
Assembler(start_addr, slowpath_start - start_addr).fillWithNops();
std::vector<GenericRegister> regs_to_spill;
for (int dwarf_regnum : live_outs) {
GenericRegister ru = GenericRegister::fromDwarf(dwarf_regnum);
if (ru.type == GenericRegister::GP) {
if (ru.gp == RSP || ru.gp.isCalleeSave())
continue;
}
regs_to_spill.push_back(ru);
}
Assembler assem(slowpath_start, end_addr - slowpath_start);
// if (regs_to_spill.size())
// assem.trap();
assem.emitBatchPush(stack_info, regs_to_spill);
uint8_t* rtn = assem.emitCall(call_addr, R11);
assem.emitBatchPop(stack_info, regs_to_spill);
assem.fillWithNops();
return rtn;
}
int
yyparse(void)
{
struct
{
YYSTYPE yyv;
int yys;
} yys[YYMAXDEPTH], *yyp, *yypt;
short *yyxi;
int yyj, yym, yystate, yyn, yyg;
long yychar;
YYSTYPE save1, save2;
int save3, save4;
save1 = yylval;
save2 = yyval;
save3 = yynerrs;
save4 = yyerrflag;
yystate = 0;
yychar = -1;
yynerrs = 0;
yyerrflag = 0;
yyp = &yys[-1];
goto yystack;
ret0:
yyn = 0;
goto ret;
ret1:
yyn = 1;
goto ret;
ret:
yylval = save1;
yyval = save2;
yynerrs = save3;
yyerrflag = save4;
return yyn;
yystack:
/* put a state and value onto the stack */
if(yydebug >= 4)
fprint(2, "char %s in %s", yytokname(yychar), yystatname(yystate));
yyp++;
if(yyp >= &yys[YYMAXDEPTH]) {
yyerror("yacc stack overflow");
goto ret1;
}
yyp->yys = yystate;
yyp->yyv = yyval;
yynewstate:
yyn = yypact[yystate];
if(yyn <= YYFLAG)
goto yydefault; /* simple state */
if(yychar < 0)
yychar = yylex1();
yyn += yychar;
if(yyn < 0 || yyn >= YYLAST)
goto yydefault;
yyn = yyact[yyn];
if(yychk[yyn] == yychar) { /* valid shift */
yychar = -1;
yyval = yylval;
yystate = yyn;
if(yyerrflag > 0)
yyerrflag--;
goto yystack;
}
yydefault:
/* default state action */
yyn = yydef[yystate];
if(yyn == -2) {
if(yychar < 0)
yychar = yylex1();
/* look through exception table */
for(yyxi=yyexca;; yyxi+=2)
if(yyxi[0] == -1 && yyxi[1] == yystate)
break;
for(yyxi += 2;; yyxi += 2) {
yyn = yyxi[0];
if(yyn < 0 || yyn == yychar)
break;
}
yyn = yyxi[1];
if(yyn < 0)
goto ret0;
}
if(yyn == 0) {
/* error ... attempt to resume parsing */
switch(yyerrflag) {
case 0: /* brand new error */
yyerror("syntax error");
yynerrs++;
if(yydebug >= 1) {
fprint(2, "%s", yystatname(yystate));
fprint(2, "saw %s\n", yytokname(yychar));
}
case 1:
case 2: /* incompletely recovered error ... try again */
yyerrflag = 3;
/* find a state where "error" is a legal shift action */
while(yyp >= yys) {
yyn = yypact[yyp->yys] + YYERRCODE;
if(yyn >= 0 && yyn < YYLAST) {
yystate = yyact[yyn]; /* simulate a shift of "error" */
if(yychk[yystate] == YYERRCODE)
goto yystack;
}
/* the current yyp has no shift onn "error", pop stack */
if(yydebug >= 2)
fprint(2, "error recovery pops state %d, uncovers %d\n",
yyp->yys, (yyp-1)->yys );
yyp--;
}
/* there is no state on the stack with an error shift ... abort */
goto ret1;
case 3: /* no shift yet; clobber input char */
if(yydebug >= 2)
fprint(2, "error recovery discards %s\n", yytokname(yychar));
if(yychar == YYEOFCODE)
goto ret1;
yychar = -1;
goto yynewstate; /* try again in the same state */
}
}
/* reduction by production yyn */
if(yydebug >= 2)
fprint(2, "reduce %d in:\n\t%s", yyn, yystatname(yystate));
yypt = yyp;
yyp -= yyr2[yyn];
yyval = (yyp+1)->yyv;
yym = yyn;
/* consult goto table to find next state */
yyn = yyr1[yyn];
yyg = yypgo[yyn];
yyj = yyg + yyp->yys + 1;
if(yyj >= YYLAST || yychk[yystate=yyact[yyj]] != -yyn)
yystate = yyact[yyg];
switch(yym) {
case 1:
#line 41 "asm.y"
{
assem(yypt[-0].yyv.inst);
} break;
case 2:
#line 47 "asm.y"
{ yyval.inst = nil; } break;
case 3:
#line 49 "asm.y"
{
if(yypt[-0].yyv.inst != nil) {
yypt[-0].yyv.inst->link = yypt[-1].yyv.inst;
yyval.inst = yypt[-0].yyv.inst;
}
else
yyval.inst = yypt[-1].yyv.inst;
} break;
case 4:
#line 60 "asm.y"
{
yypt[-0].yyv.inst->sym = yypt[-2].yyv.sym;
yyval.inst = yypt[-0].yyv.inst;
} break;
case 5:
#line 65 "asm.y"
{
heap(yypt[-3].yyv.ival, yypt[-1].yyv.ival, yypt[-0].yyv.string);
yyval.inst = nil;
} break;
case 6:
#line 70 "asm.y"
{
yyval.inst = nil;
} break;
case 8:
#line 77 "asm.y"
{
yyval.ival = yypt[-0].yyv.ival;
} break;
case 9:
#line 81 "asm.y"
{
yypt[-0].yyv.sym->value = heapid++;
yyval.ival = yypt[-0].yyv.sym->value;
} break;
case 10:
#line 88 "asm.y"
{ yyval.string = nil; } break;
case 11:
#line 90 "asm.y"
{
yyval.string = yypt[-0].yyv.string;
} break;
case 12:
#line 96 "asm.y"
{
yyval.list = newi(yypt[-0].yyv.ival, nil);
} break;
case 13:
#line 100 "asm.y"
{
yyval.list = newi(yypt[-0].yyv.ival, yypt[-2].yyv.list);
} break;
case 14:
#line 106 "asm.y"
{
yyval.inst = ai(yypt[-3].yyv.ival);
yyval.inst->src = yypt[-2].yyv.addr;
yyval.inst->dst = yypt[-0].yyv.addr;
} break;
case 15:
#line 112 "asm.y"
{
yyval.inst = ai(yypt[-5].yyv.ival);
yyval.inst->src = yypt[-4].yyv.addr;
yyval.inst->reg = yypt[-2].yyv.addr;
yyval.inst->dst = yypt[-0].yyv.addr;
} break;
case 16:
#line 119 "asm.y"
{
yyval.inst = ai(yypt[-3].yyv.ival);
yyval.inst->src = yypt[-2].yyv.addr;
yyval.inst->dst = yypt[-0].yyv.addr;
} break;
case 17:
#line 125 "asm.y"
{
yyval.inst = ai(yypt[-1].yyv.ival);
yyval.inst->dst = yypt[-0].yyv.addr;
} break;
case 18:
#line 130 "asm.y"
{
yyval.inst = ai(yypt[-0].yyv.ival);
} break;
case 19:
#line 136 "asm.y"
{
data(DEFB, yypt[-2].yyv.ival, yypt[-0].yyv.list);
} break;
case 20:
#line 140 "asm.y"
{
data(DEFW, yypt[-2].yyv.ival, yypt[-0].yyv.list);
} break;
case 21:
#line 144 "asm.y"
{
data(DEFL, yypt[-2].yyv.ival, yypt[-0].yyv.list);
} break;
case 22:
#line 148 "asm.y"
{
data(DEFF, yypt[-2].yyv.ival, newi(dtocanon((double)yypt[-0].yyv.ival), nil));
} break;
case 23:
#line 152 "asm.y"
{
data(DEFF, yypt[-2].yyv.ival, newi(dtocanon(yypt[-0].yyv.fval), nil));
} break;
case 24:
#line 156 "asm.y"
{
if(strcmp(yypt[-0].yyv.sym->name, "Inf") == 0 || strcmp(yypt[-0].yyv.sym->name, "Infinity") == 0) {
u.l = (uvlong)0x7ff00000<<32;
data(DEFF, yypt[-2].yyv.ival, newi(dtocanon(u.d), nil));
} else if(strcmp(yypt[-0].yyv.sym->name, "NaN") == 0) {
u.l = ((uvlong)0x7fffffff<<32) | (uvlong)0xffffffffUL;
data(DEFF, yypt[-2].yyv.ival, newi(dtocanon(u.d), nil));
} else
diag("bad value for real: %s", yypt[-0].yyv.sym->name);
} break;
case 25:
#line 167 "asm.y"
{
data(DEFF, yypt[-3].yyv.ival, newi(dtocanon(-(double)yypt[-0].yyv.ival), nil));
} break;
case 26:
#line 171 "asm.y"
{
data(DEFF, yypt[-3].yyv.ival, newi(dtocanon(-yypt[-0].yyv.fval), nil));
} break;
case 27:
#line 175 "asm.y"
{
if(strcmp(yypt[-0].yyv.sym->name, "Inf") == 0 || strcmp(yypt[-0].yyv.sym->name, "Infinity") == 0) {
u.l = (uvlong)0xfff00000<<32;
data(DEFF, yypt[-3].yyv.ival, newi(dtocanon(u.d), nil));
} else
diag("bad value for real: %s", yypt[-0].yyv.sym->name);
} break;
case 28:
#line 183 "asm.y"
{
data(DEFS, yypt[-2].yyv.ival, news(yypt[-0].yyv.string, nil));
} break;
case 29:
#line 187 "asm.y"
{
if(yypt[-2].yyv.sym->ds != 0)
diag("%s declared twice", yypt[-2].yyv.sym->name);
yypt[-2].yyv.sym->ds = yypt[-0].yyv.ival;
yypt[-2].yyv.sym->value = dseg;
dseg += yypt[-0].yyv.ival;
} break;
case 30:
#line 195 "asm.y"
{
ext(yypt[-4].yyv.ival, yypt[-2].yyv.ival, yypt[-0].yyv.string);
} break;
case 31:
#line 199 "asm.y"
{
mklink(yypt[-6].yyv.ival, yypt[-4].yyv.ival, yypt[-2].yyv.ival, yypt[-0].yyv.string);
} break;
case 32:
#line 203 "asm.y"
{
if(module != nil)
diag("this module already defined as %s", yypt[-0].yyv.sym->name);
else
module = yypt[-0].yyv.sym;
} break;
case 33:
#line 210 "asm.y"
{
if(pcentry >= 0)
diag("this module already has entry point %d, %d" , pcentry, dentry);
pcentry = yypt[-2].yyv.ival;
dentry = yypt[-0].yyv.ival;
} break;
case 34:
#line 217 "asm.y"
{
data(DEFA, yypt[-4].yyv.ival, newa(yypt[-2].yyv.ival, yypt[-0].yyv.ival));
} break;
case 35:
#line 221 "asm.y"
{
data(DIND, yypt[-2].yyv.ival, newa(yypt[-0].yyv.ival, 0));
} break;
case 36:
#line 225 "asm.y"
{
data(DAPOP, 0, newa(0, 0));
} break;
case 37:
#line 229 "asm.y"
{
ldts(yypt[-0].yyv.ival);
} break;
case 38:
#line 233 "asm.y"
{
excs(yypt[-0].yyv.ival);
} break;
case 39:
#line 237 "asm.y"
{
exc(yypt[-10].yyv.ival, yypt[-8].yyv.ival, yypt[-6].yyv.ival, yypt[-4].yyv.ival, yypt[-2].yyv.ival, yypt[-0].yyv.ival);
} break;
case 40:
#line 241 "asm.y"
{
etab(yypt[-2].yyv.string, yypt[-0].yyv.ival);
} break;
case 41:
#line 245 "asm.y"
{
etab(nil, yypt[-0].yyv.ival);
} break;
case 42:
#line 249 "asm.y"
{
source(yypt[-0].yyv.string);
} break;
case 43:
#line 255 "asm.y"
{
yyval.addr = aa(yypt[-0].yyv.ival);
yyval.addr->mode = AXIMM;
if(yyval.addr->val > 0x7FFF || yyval.addr->val < -0x8000)
diag("immediate %d too large for middle operand", yyval.addr->val);
} break;
case 44:
#line 262 "asm.y"
{
if(yypt[-0].yyv.addr->mode == AMP)
yypt[-0].yyv.addr->mode = AXINM;
else
yypt[-0].yyv.addr->mode = AXINF;
if(yypt[-0].yyv.addr->mode == AXINM && (ulong)yypt[-0].yyv.addr->val > 0xFFFF)
diag("register offset %d(mp) too large", yypt[-0].yyv.addr->val);
if(yypt[-0].yyv.addr->mode == AXINF && (ulong)yypt[-0].yyv.addr->val > 0xFFFF)
diag("register offset %d(fp) too large", yypt[-0].yyv.addr->val);
yyval.addr = yypt[-0].yyv.addr;
} break;
case 45:
#line 276 "asm.y"
{
yyval.addr = aa(yypt[-0].yyv.ival);
yyval.addr->mode = AIMM;
} break;
case 46:
#line 281 "asm.y"
{
yyval.addr = aa(0);
yyval.addr->sym = yypt[-0].yyv.sym;
} break;
case 48:
#line 289 "asm.y"
{
yypt[-0].yyv.addr->mode |= AIND;
yyval.addr = yypt[-0].yyv.addr;
} break;
case 49:
#line 294 "asm.y"
{
yypt[-1].yyv.addr->mode |= AIND;
if(yypt[-1].yyv.addr->val & 3)
diag("indirect offset must be word size");
if(yypt[-1].yyv.addr->mode == (AMP|AIND) && ((ulong)yypt[-1].yyv.addr->val > 0xFFFF || (ulong)yypt[-3].yyv.ival > 0xFFFF))
diag("indirect offset %d(%d(mp)) too large", yypt[-3].yyv.ival, yypt[-1].yyv.addr->val);
if(yypt[-1].yyv.addr->mode == (AFP|AIND) && ((ulong)yypt[-1].yyv.addr->val > 0xFFFF || (ulong)yypt[-3].yyv.ival > 0xFFFF))
diag("indirect offset %d(%d(fp)) too large", yypt[-3].yyv.ival, yypt[-1].yyv.addr->val);
yypt[-1].yyv.addr->off = yypt[-1].yyv.addr->val;
yypt[-1].yyv.addr->val = yypt[-3].yyv.ival;
yyval.addr = yypt[-1].yyv.addr;
} break;
case 51:
#line 310 "asm.y"
{
yyval.addr = aa(yypt[-3].yyv.ival);
yyval.addr->mode = AMP;
} break;
case 52:
#line 315 "asm.y"
{
yyval.addr = aa(yypt[-3].yyv.ival);
yyval.addr->mode = AFP;
} break;
case 54:
#line 323 "asm.y"
{
yyval.ival = yypt[-0].yyv.sym->value;
} break;
case 55:
#line 327 "asm.y"
{
yyval.ival = -yypt[-0].yyv.ival;
} break;
case 56:
#line 331 "asm.y"
{
yyval.ival = yypt[-0].yyv.ival;
} break;
case 57:
#line 335 "asm.y"
{
yyval.ival = ~yypt[-0].yyv.ival;
} break;
case 58:
#line 339 "asm.y"
{
yyval.ival = yypt[-1].yyv.ival;
} break;
case 60:
#line 346 "asm.y"
{
yyval.ival = yypt[-2].yyv.ival + yypt[-0].yyv.ival;
} break;
case 61:
#line 350 "asm.y"
{
yyval.ival = yypt[-2].yyv.ival - yypt[-0].yyv.ival;
} break;
case 62:
#line 354 "asm.y"
{
yyval.ival = yypt[-2].yyv.ival * yypt[-0].yyv.ival;
} break;
case 63:
#line 358 "asm.y"
{
yyval.ival = yypt[-2].yyv.ival / yypt[-0].yyv.ival;
} break;
case 64:
#line 362 "asm.y"
{
yyval.ival = yypt[-2].yyv.ival % yypt[-0].yyv.ival;
} break;
case 65:
#line 366 "asm.y"
{
yyval.ival = yypt[-3].yyv.ival << yypt[-0].yyv.ival;
} break;
case 66:
#line 370 "asm.y"
{
yyval.ival = yypt[-3].yyv.ival >> yypt[-0].yyv.ival;
} break;
case 67:
#line 374 "asm.y"
{
yyval.ival = yypt[-2].yyv.ival & yypt[-0].yyv.ival;
} break;
case 68:
#line 378 "asm.y"
{
yyval.ival = yypt[-2].yyv.ival ^ yypt[-0].yyv.ival;
} break;
case 69:
#line 382 "asm.y"
{
yyval.ival = yypt[-2].yyv.ival | yypt[-0].yyv.ival;
} break;
}
goto yystack; /* stack new state and value */
}