ref: 75d44bc306ffcbaadaa18c161bf54071304510b0
dir: /sys/src/cmd/7l/asmout.c/
#include "l.h"
#define S32 (0U<<31)
#define S64 (1U<<31)
#define Rm(X) (((X)&31)<<16)
#define Rn(X) (((X)&31)<<5)
#define Rd(X) (((X)&31)<<0)
#define Sbit (1U<<29)
#define OPDP2(x) (0<<30 | 0 << 29 | 0xd6<<21 | (x)<<10)
#define OPDP3(sf,op54,op31,o0) ((sf)<<31 | (op54)<<29 | 0x1B<<24 | (op31)<<21 | (o0)<<15)
#define OPBcc(x) (0x2A<<25 | 0<<24 | 0<<4 | ((x)&15))
#define OPBLR(x) (0x6B<<25 | 0<<23 | (x)<<21 | 0x1F<<16 | 0<<10) /* x=0, JMP; 1, CALL; 2, RET */
#define SYSOP(l,op0,op1,crn,crm,op2,rt) (0x354<<22 | (l)<<21 | (op0)<<19 | (op1)<<16 | (crn)<<12 | (crm)<<8 | (op2)<<5 | (rt))
#define SYSHINT(x) SYSOP(0,0,3,2,0,(x),0x1F)
#define LDSTR12U(sz,v,opc) ((sz)<<30 | 7<<27 | (v)<<26 | 1<<24 | (opc)<<22)
#define LDSTR9S(sz,v,opc) ((sz)<<30 | 7<<27 | (v)<<26 | 0<<24 | (opc)<<22)
#define LD2STR(o) ((o) & ~(3<<22))
#define LDSTX(sz,o2,l,o1,o0) ((sz)<<30 | 0x8<<24 | (o2)<<23 | (l)<<22 | (o1)<<21 | (o0)<<15)
#define FPCMP(m,s,type,op,op2) ((m)<<31 | (s)<<29 | 0x1E<<24 | (type)<<22 | 1<<21 | (op)<<14 | 8<<10 | (op2))
#define FPCCMP(m,s,type,op) ((m)<<31 | (s)<<29 | 0x1E<<24 | (type)<<22 | 1<<21 | 1<<10 | (op)<<4)
#define FPOP1S(m,s,type,op) ((m)<<31 | (s)<<29 | 0x1E<<24 | (type)<<22 | 1<<21 | (op)<<15 | 0x10<<10)
#define FPOP2S(m,s,type,op) ((m)<<31 | (s)<<29 | 0x1E<<24 | (type)<<22 | 1<<21 | (op)<<12 | 2<<10)
#define FPCVTI(sf,s,type,rmode,op) ((sf)<<31 | (s)<<29 | 0x1E<<24 | (type)<<22 | 1<<21 | (rmode)<<19 | (op)<<16 | 0<<10)
#define FPCVTF(sf,s,type,rmode,op,scale) ((sf)<<31 | (s)<<29 | 0x1E<<24 | (type)<<22 | 0<<21 | (rmode)<<19 | (op)<<16 | (scale)<<10)
#define ADR(p,o,rt) ((p)<<31 | ((o)&3)<<29 | (0x10<<24) | (((o>>2)&0x7FFFF)<<5) | (rt))
#define LSL0_32 (2<<13)
#define LSL0_64 (3<<13)
static long opbrr(int);
static long opbra(int);
static long oshrr(int, int, int);
static long olhrr(int, int, int);
static long olsr12u(long, long, int, int);
static long olsr9s(long, long, int, int);
static long opimm(int);
static vlong brdist(Prog*, int, int, int);
static long opbfm(int, int, int, int, int);
static long opextr(int, long, int, int, int);
static long opbit(int);
static long op0(int);
static long opstr12(int);
static long opstr9(int);
static long opldr9(int);
static long opxrrr(int);
static long olsxrr(int, int, int, int);
static long oprrr(int);
static long opirr(int);
static long opldr12(int);
static long opldrpp(int);
static long opload(int);
static long opstore(int);
static long omovlit(int, Prog*, Adr*, int);
static int movesize(int);
static long oaddi(long, long, int, int);
/*
* valid pstate field values, and value to use in instruction
*/
static struct{
ulong a;
ulong b;
} pstatefield[] = {
D_SPSel, (0<<16) | (4<<12) | (5<<5),
D_DAIFSet, (3<<16) | (4<<12) | (6<<5),
D_DAIFClr, (3<<16) | (4<<12) | (7<<5),
};
void
asmout(Prog *p, Optab *o)
{
long o1, o2, o3, o4, o5, v, hi;
vlong d;
int r, s, rf, rt, ra, nzcv, cond, i, as;
Mask *mask;
static Prog *lastcase;
o1 = 0;
o2 = 0;
o3 = 0;
o4 = 0;
o5 = 0;
switch(o->type) {
default:
diag("unknown asm %d", o->type);
prasm(p);
break;
case 0: /* pseudo ops */
break;
case 1: /* op Rm,[Rn],Rd; default Rn=Rd -> op Rm<<0,[Rn,]Rd (shifted register) */
o1 = oprrr(p->as);
rf = p->from.reg;
rt = p->to.reg;
r = p->reg;
if(p->to.type == D_NONE)
rt = REGZERO;
if(r == NREG)
r = rt;
o1 |= (rf<<16) | (r<<5) | rt;
break;
case 2: /* add/sub $(uimm12|uimm24)[,R],R; cmp $(uimm12|uimm24),R */
o1 = opirr(p->as);
rt = p->to.reg;
if(p->to.type == D_NONE){
if((o1 & Sbit) == 0)
diag("ineffective ZR destination\n%P", p);
rt = REGZERO;
}
r = p->reg;
if(r == NREG)
r = rt;
v = regoff(&p->from);
o1 = oaddi(o1, v, r, rt);
break;
case 3: /* op R<<n[,R],R (shifted register) */
o1 = oprrr(p->as);
o1 |= p->from.offset; /* includes reg, op, etc */
rt = p->to.reg;
if(p->to.type == D_NONE)
rt = REGZERO;
r = p->reg;
if(p->as == AMVN || p->as == AMVNW)
r = REGZERO;
else if(r == NREG)
r = rt;
o1 |= (r<<5) | rt;
break;
case 4: /* mov $addcon, R; mov $recon, R; mov $racon, R */
o1 = opirr(p->as);
rt = p->to.reg;
r = o->param;
if(r == 0)
r = REGZERO;
v = regoff(&p->from);
if((v & 0xFFF000) != 0){
v >>= 12;
o1 |= 1<<22; /* shift, by 12 */
}
o1 |= ((v& 0xFFF) << 10) | (r<<5) | rt;
break;
case 5: /* b s; bl s */
o1 = opbra(p->as);
o1 |= brdist(p, 0, 26, 2);
break;
case 6: /* b ,O(R); bl ,O(R) */
o1 = opbrr(p->as);
o1 |= p->to.reg << 5;
break;
case 7: /* beq s */
o1 = opbra(p->as);
o1 |= brdist(p, 0, 19, 2)<<5;
break;
case 8: /* lsl $c,[R],R -> ubfm $(W-1)-c,$(-c MOD (W-1)),Rn,Rd */
rt = p->to.reg;
rf = p->reg;
if(rf == NREG)
rf = rt;
v = p->from.offset;
switch(p->as){
case AASR: o1 = opbfm(ASBFM, v, 63, rf, rt); break;
case AASRW: o1 = opbfm(ASBFMW, v, 31, rf, rt); break;
case ALSL: o1 = opbfm(AUBFM, (64-v)&63, 63-v, rf, rt); break;
case ALSLW: o1 = opbfm(AUBFMW, (32-v)&31, 31-v, rf, rt); break;
case ALSR: o1 = opbfm(AUBFM, v, 63, rf, rt); break;
case ALSRW: o1 = opbfm(AUBFMW, v, 31, rf, rt); break;
case AROR: o1 = opextr(AEXTR, v, rf, rf, rt); break;
case ARORW: o1 = opextr(AEXTRW, v, rf, rf, rt); break;
default:
diag("bad shift $con\n%P", curp);
break;
}
break;
case 9: /* lsl Rm,[Rn],Rd -> lslv Rm, Rn, Rd */
o1 = oprrr(p->as);
r = p->reg;
if(r == NREG)
r = p->to.reg;
o1 |= (p->from.reg << 16) | (r<<5) | p->to.reg;
break;
case 10: /* brk/hvc/.../svc [$con] */
o1 = opimm(p->as);
if(p->to.type != D_NONE)
o1 |= (p->to.offset & 0xffff)<<5;
break;
case 11: /* dword */
switch(aclass(&p->to)) {
case C_VCON:
case C_ZCON:
case C_LCON:
if(!dlm)
break;
if(p->to.name != D_EXTERN && p->to.name != D_STATIC)
break;
case C_ADDR:
if(p->to.sym->type == SUNDEF)
ckoff(p->to.sym, p->to.offset);
dynreloc(p->to.sym, p->pc, 1);
}
o1 = instoffset;
o2 = instoffset >> 32;
break;
case 12: /* movT $lcon, reg */
o1 = omovlit(p->as, p, &p->from, p->to.reg);
break;
case 13: /* addop $lcon, [R], R (64 bit literal); cmp $lcon,R -> addop $lcon,R, ZR */
o1 = omovlit(AMOV, p, &p->from, REGTMP);
rt = p->to.reg;
if(p->to.type == D_NONE)
rt = REGZERO;
r = p->reg;
if(r == NREG)
r = rt;
if(p->to.type != D_NONE && (p->to.reg == REGSP || r == REGSP)){
o2 = opxrrr(p->as);
o2 |= REGTMP<<16;
o2 |= LSL0_64;
}else{
o2 = oprrr(p->as);
o2 |= REGTMP << 16; /* shift is 0 */
}
o2 |= r << 5;
o2 |= rt;
break;
case 14: /* word */
if(aclass(&p->to) == C_ADDR)
diag("address constant needs DWORD\n%P", p);
o1 = instoffset;
break;
case 15: /* mul/mneg/umulh/umull r,[r,]r; madd/msub Rm,Rn,Ra,Rd */
o1 = oprrr(p->as);
rf = p->from.reg;
rt = p->to.reg;
if(p->from3.type == D_REG){
r = p->from3.reg;
ra = p->reg;
if(ra == NREG)
ra = REGZERO;
}else{
r = p->reg;
if(r == NREG)
r = rt;
ra = REGZERO;
}
o1 |= (rf<<16) | (ra<<10) | (r<<5) | rt;
break;
case 16: /* XremY R[,R],R -> XdivY; XmsubY */
o1 = oprrr(p->as);
rf = p->from.reg;
rt = p->to.reg;
r = p->reg;
if(r == NREG)
r = rt;
o1 |= (rf<<16) | (r<<5) | REGTMP;
o2 = oprrr(AMSUBW);
o2 |= o1 & (1<<31); /* same size */
o2 |= (rf<<16) | (r<<10) | (REGTMP<<5) | rt;
break;
case 17: /* op Rm,[Rn],Rd; default Rn=ZR */
o1 = oprrr(p->as);
rf = p->from.reg;
rt = p->to.reg;
r = p->reg;
if(p->to.type == D_NONE)
rt = REGZERO;
if(r == NREG)
r = REGZERO;
o1 |= (rf<<16) | (r<<5) | rt;
break;
case 18: /* csel cond,Rn,Rm,Rd; cinc/cinv/cneg cond,Rn,Rd; cset cond,Rd */
o1 = oprrr(p->as);
cond = p->from.reg;
r = p->reg;
if(r != NREG){
if(p->from3.type == D_NONE){
/* CINC/CINV/CNEG */
rf = r;
cond ^= 1;
}else
rf = p->from3.reg; /* CSEL */
}else{
/* CSET */
if(p->from3.type != D_NONE)
diag("invalid combination\n%P", p);
r = rf = REGZERO;
cond ^= 1;
}
rt = p->to.reg;
o1 |= (r<<16) | (cond<<12) | (rf<<5) | rt;
break;
case 19: /* CCMN cond, (Rm|uimm5),Rn, uimm4 -> ccmn Rn,Rm,uimm4,cond */
nzcv = p->to.offset;
cond = p->from.reg;
if(p->from3.type == D_REG){
o1 = oprrr(p->as);
rf = p->from3.reg; /* Rm */
}else{
o1 = opirr(p->as);
rf = p->from3.offset & 0x1F;
}
o1 |= (rf<<16) | (cond<<12) | (p->reg<<5) | nzcv;
break;
case 20: /* movT R,O(R) -> strT */
v = regoff(&p->to);
r = p->to.reg;
if(r == NREG)
r = o->param;
if(v < 0){ /* unscaled 9-bit signed */
o1 = olsr9s(opstr9(p->as), v, r, p->from.reg);
}else{
v = offsetshift(v, o->a3);
o1 = olsr12u(opstr12(p->as), v, r, p->from.reg);
}
break;
case 21: /* movT O(R),R -> ldrT */
v = regoff(&p->from);
r = p->from.reg;
if(r == NREG)
r = o->param;
if(v < 0){ /* unscaled 9-bit signed */
o1 = olsr9s(opldr9(p->as), v, r, p->to.reg);
}else{
v = offsetshift(v, o->a1);
//print("offset=%lld v=%ld a1=%d\n", instoffset, v, o->a1);
o1 = olsr12u(opldr12(p->as), v, r, p->to.reg);
}
break;
case 22: /* movT (R)O!,R; movT O(R)!, R -> ldrT */
v = p->from.offset;
if(v < -256 || v > 255)
diag("offset out of range\n%P", p);
o1 = opldrpp(p->as);
if(p->from.type == D_XPOST)
o1 |= 1<<10;
else
o1 |= 3<<10;
o1 |= ((v&0x1FF)<<12) | (p->from.reg<<5) | p->to.reg;
break;
case 23: /* movT R,(R)O!; movT O(R)!, R -> strT */
v = p->to.offset;
if(v < -256 || v > 255)
diag("offset out of range\n%P", p);
o1 = LD2STR(opldrpp(p->as));
if(p->to.type == D_XPOST)
o1 |= 1<<10;
else
o1 |= 3<<10;
o1 |= ((v&0x1FF)<<12) | (p->to.reg<<5) | p->from.reg;
break;
case 24: /* mov/mvn Rs,Rd -> add $0,Rs,Rd or orr Rs,ZR,Rd */
rf = p->from.reg;
rt = p->to.reg;
s = rf == REGSP || rt == REGSP;
if(p->as == AMVN || p->as == AMVNW){
if(s)
diag("illegal SP reference\n%P", p);
o1 = oprrr(p->as);
o1 |= (rf<<16) | (REGZERO<<5) | rt;
}else if(s){
o1 = opirr(p->as);
o1 |= (rf<<5) | rt;
}else{
o1 = oprrr(p->as);
o1 |= (rf<<16) | (REGZERO<<5) | rt;
}
break;
case 25: /* negX Rs, Rd -> subX Rs<<0, ZR, Rd */
o1 = oprrr(p->as);
rf = p->from.reg;
rt = p->to.reg;
o1 |= (rf<<16) | (REGZERO<<5) | rt;
break;
case 26: /* negX Rm<<s, Rd -> subX Rm<<s, ZR, Rd */
o1 = oprrr(p->as);
o1 |= p->from.offset; /* includes reg, op, etc */
rt = p->to.reg;
o1 |= (REGZERO<<5) | rt;
break;
case 27: /* op Rm<<n[,Rn],Rd (extended register) */
o1 = opxrrr(p->as);
if(p->from.type == D_EXTREG)
o1 |= p->from.offset; /* includes reg, op, etc */
else
o1 |= p->from.reg << 16;
rt = p->to.reg;
if(p->to.type == D_NONE)
rt = REGZERO;
r = p->reg;
if(r == NREG)
r = rt;
o1 |= (r<<5) | rt;
break;
case 28: /* logop $lcon, [R], R (64 bit literal) */
o1 = omovlit(AMOV, p, &p->from, REGTMP);
r = p->reg;
if(r == NREG)
r = p->to.reg;
o2 = oprrr(p->as);
o2 |= REGTMP << 16; /* shift is 0 */
o2 |= r << 5;
o2 |= p->to.reg;
break;
case 29: /* op Rn, Rd */
o1 = oprrr(p->as);
o1 |= p->from.reg<<5 | p->to.reg;
break;
case 30: /* movT R,L(R) -> strT */
s = movesize(o->as);
if(s < 0)
diag("unexpected long move, op %A tab %A\n%P", p->as, o->as, p);
v = regoff(&p->to);
if((v & ((1<<s)-1)) != 0)
diag("misaligned offset\n%P", p);
if(v < 0 || (v>>s) >= (1<<24))
goto Hugestxr;
hi = v - (v & (0xFFF<<s));
if((hi & 0xFFF) != 0)
diag("internal: miscalculated offset %ld [%d]\n%P", v, s, p);
//fprint(2, "v=%ld (%#lux) s=%d hi=%ld (%#lux) v'=%ld (%#lux)\n", v, v, s, hi, hi, ((v-hi)>>s)&0xFFF, ((v-hi)>>s)&0xFFF);
r = p->to.reg;
if(r == NREG)
r = o->param;
o1 = oaddi(opirr(AADD), hi, r, REGTMP);
o2 = olsr12u(opstr12(p->as), ((v-hi)>>s)&0xFFF, REGTMP, p->from.reg);
break;
case 31: /* movT L(R), R -> ldrT */
s = movesize(o->as);
if(s < 0)
diag("unexpected long move, op %A tab %A\n%P", p->as, o->as, p);
v = regoff(&p->from);
if((v & ((1<<s)-1)) != 0)
diag("misaligned offset\n%P", p);
if(v < 0 || (v>>s) >= (1<<24))
goto Hugeldxr;
hi = v - (v & (0xFFF<<s));
if((hi & 0xFFF) != 0)
diag("internal: miscalculated offset %ld [%d]\n%P", v, s, p);
//fprint(2, "v=%ld (%#lux) s=%d hi=%ld (%#lux) v'=%ld (%#lux)\n", v, v, s, hi, hi, ((v-hi)>>s)&0xFFF, ((v-hi)>>s)&0xFFF);
r = p->from.reg;
if(r == NREG)
r = o->param;
o1 = oaddi(opirr(AADD), hi, r, REGTMP);
o2 = olsr12u(opldr12(p->as), ((v-hi)>>s)&0xFFF, REGTMP, p->to.reg);
break;
case 32: /* mov $con, R -> movz/movn */
r = 32;
if(p->as == AMOV)
r = 64;
d = p->from.offset;
s = movcon(d);
if(s < 0 || s >= r){
d = ~d;
s = movcon(d);
if(s < 0 || s >= r)
diag("impossible move wide: %#llux\n%P", p->from.offset, p);
if(p->as == AMOV)
o1 = opirr(AMOVN);
else
o1 = opirr(AMOVNW);
}else{
if(p->as == AMOV)
o1 = opirr(AMOVZ);
else
o1 = opirr(AMOVZW);
}
rt = p->to.reg;
o1 |= (((d>>(s*16))& 0xFFFF) << 5) | ((s&3)<<21) | rt;
break;
case 33: /* movk $uimm16 << pos */
o1 = opirr(p->as);
d = p->from.offset;
if((d>>16) != 0)
diag("requires uimm16\n%P", p);
s = 0;
if(p->from3.type != D_NONE){
if(p->from3.type != D_CONST)
diag("missing bit position\n%P", p);
s = p->from3.offset;
if((s&0xF) != 0 || (s /= 16) >= 4 || (o1&S64) == 0 && s >= 2)
diag("illegal bit position\n%P", p);
}
rt = p->to.reg;
o1 |= ((d & 0xFFFF) << 5) | ((s&3)<<21) | rt;
break;
case 34: /* mov $lacon,R */
o1 = omovlit(AMOV, p, &p->from, REGTMP);
if(!o1)
break;
o2 = opxrrr(AADD);
o2 |= REGTMP << 16;
o2 |= LSL0_64;
r = p->from.reg;
if(r == NREG)
r = o->param;
o2 |= r << 5;
o2 |= p->to.reg;
break;
case 35: /* mov SPR,R -> mrs */
o1 = oprrr(AMRS);
v = p->from.offset;
if((o1 & (v & ~(3<<19))) != 0)
diag("MRS register value overlap\n%P", p);
o1 |= v;
o1 |= p->to.reg;
break;
case 36: /* mov R,SPR */
o1 = oprrr(AMSR);
v = p->to.offset;
if((o1 & (v & ~(3<<19))) != 0)
diag("MSR register value overlap\n%P", p);
o1 |= v;
o1 |= p->from.reg;
break;
case 37: /* mov $con,PSTATEfield -> MSR [immediate] */
if((p->from.offset&~(uvlong)0xF) != 0)
diag("illegal immediate for PSTATE field\n%P", p);
o1 = opirr(AMSR);
o1 |= (p->from.offset&0xF) << 8; /* Crm */
v = 0;
for(i = 0; i < nelem(pstatefield); i++)
if(pstatefield[i].a == p->to.offset){
v = pstatefield[i].b;
break;
}
if(v == 0)
diag("illegal PSTATE field for immediate move\n%P", p);
o1 |= v;
break;
case 38: /* clrex [$imm] */
o1 = opimm(p->as);
if(p->to.type == D_NONE)
o1 |= 0xF<<8;
else
o1 |= (p->to.offset & 0xF)<<8;
break;
case 39: /* cbz R, rel */
o1 = opirr(p->as);
o1 |= p->from.reg;
o1 |= brdist(p, 0, 19, 2) << 5;
break;
case 40: /* tbz */
o1 = opirr(p->as);
v = p->from.offset;
if(v < 0 || v > 63)
diag("illegal bit number\n%P", p);
o1 |= ((v&0x20)<<(31-5)) | ((v&0x1F)<<19);
o1 |= brdist(p, 0, 14, 2)<<5;
o1 |= p->reg;
break;
case 41: /* eret, nop, others with no operands */
o1 = op0(p->as);
break;
case 42: /* bfm R,r,s,R */
o1 = opbfm(p->as, p->from.offset, p->from3.offset, p->reg, p->to.reg);
break;
case 43: /* bfm aliases */
r = p->from.offset;
s = p->from3.offset;
rf = p->reg;
rt = p->to.reg;
if(rf == NREG)
rf = rt;
switch(p->as){
case ABFI: o1 = opbfm(ABFM, 64-r, s-1, rf, rt); break;
case ABFIW: o1 = opbfm(ABFMW, 32-r, s-1, rf, rt); break;
case ABFXIL: o1 = opbfm(ABFM, r, r+s-1, rf, rt); break;
case ABFXILW: o1 = opbfm(ABFMW, r, r+s-1, rf, rt); break;
case ASBFIZ: o1 = opbfm(ASBFM, 64-r, s-1, rf, rt); break;
case ASBFIZW: o1 = opbfm(ASBFMW, 32-r, s-1, rf, rt); break;
case ASBFX: o1 = opbfm(ASBFM, r, r+s-1, rf, rt); break;
case ASBFXW: o1 = opbfm(ASBFMW, r, r+s-1, rf, rt); break;
case AUBFIZ: o1 = opbfm(AUBFM, 64-r, s-1, rf, rt); break;
case AUBFIZW: o1 = opbfm(AUBFMW, 32-r, s-1, rf, rt); break;
case AUBFX: o1 = opbfm(AUBFM, r, r+s-1, rf, rt); break;
case AUBFXW: o1 = opbfm(AUBFMW, r, r+s-1, rf, rt); break;
default:
diag("bad bfm alias\n%P", curp);
break;
}
break;
case 44: /* extr $b, Rn, Rm, Rd */
o1 = opextr(p->as, p->from.offset, p->from3.reg, p->reg, p->to.reg);
break;
case 45: /* sxt/uxt[bhw] R,R; movT R,R -> sxtT R,R */
rf = p->from.reg;
rt = p->to.reg;
as = p->as;
if(rf == REGZERO)
as = AMOVWU; /* clearer in disassembly */
switch(as){
case AMOVB:
case ASXTB: o1 = opbfm(ASBFM, 0, 7, rf, rt); break;
case AMOVH:
case ASXTH: o1 = opbfm(ASBFM, 0, 15, rf, rt); break;
case AMOVW:
case ASXTW: o1 = opbfm(ASBFM, 0, 31, rf, rt); break;
case AMOVBU:
case AUXTB: o1 = opbfm(AUBFM, 0, 7, rf, rt); break;
case AMOVHU:
case AUXTH: o1 = opbfm(AUBFM, 0, 15, rf, rt); break;
case AMOVWU: o1 = oprrr(as) | (rf<<16) | (REGZERO<<5) | rt; break;
case AUXTW: o1 = opbfm(AUBFM, 0, 31, rf, rt); break;
case ASXTBW: o1 = opbfm(ASBFMW, 0, 7, rf, rt); break;
case ASXTHW: o1 = opbfm(ASBFMW, 0, 15, rf, rt); break;
case AUXTBW: o1 = opbfm(AUBFMW, 0, 7, rf, rt); break;
case AUXTHW: o1 = opbfm(AUBFMW, 0, 15, rf, rt); break;
default: diag("bad sxt %A", as); break;
}
break;
case 46: /* cls */
o1 = opbit(p->as);
o1 |= p->from.reg<<5;
o1 |= p->to.reg;
break;
case 47: /* movT R,V(R) -> strT (huge offset) */
Hugestxr:
o1 = omovlit(AMOV, p, &p->to, REGTMP);
r = p->to.reg;
if(r == NREG)
r = o->param;
o2 = LD2STR(olsxrr(p->as, REGTMP, r, p->from.reg));
o2 |= 7<<13; // REGTMP.SX
break;
case 48: /* movT V(R), R -> ldrT (huge offset) */
Hugeldxr:
o1 = omovlit(AMOV, p, &p->from, REGTMP);
r = p->from.reg;
if(r == NREG)
r = o->param;
o2 = olsxrr(p->as, REGTMP, r, p->to.reg);
o2 |= 7<<13; // REGTMP.SX
break;
case 50: /* sys/sysl */
o1 = opirr(p->as);
if((p->from.offset & ~SYSARG4(0x7, 0xF, 0xF, 0x7)) != 0)
diag("illegal SYS argument\n%P", p);
o1 |= p->from.offset;
if(p->to.type == D_REG)
o1 |= p->to.reg;
else if(p->reg != NREG)
o1 |= p->reg;
else
o1 |= 0x1F;
break;
case 51: /* dmb */
o1 = opirr(p->as);
if(p->from.type == D_CONST)
o1 |= (p->from.offset&0xF)<<8;
break;
case 52: /* hint */
o1 = opirr(p->as);
o1 |= (p->from.offset&0x7F)<<5;
break;
case 53: /* and/or/eor... $bimmN, Rn, Rd -> op (N,r,s), Rn, Rd */
as = p->as;
rt = p->to.reg;
r = p->reg;
if(r == NREG)
r = rt;
if(as == AMOV){
as = AORR;
r = REGZERO;
}else if(as == AMOVW || as == AMOVWU){
as = AORRW;
r = REGZERO;
}
o1 = opirr(as);
mask = findmask(p->from.offset);
if(mask == nil)
mask = findmask(p->from.offset | p->from.offset<<32);
if(mask == nil)
diag("invalid mask %#llux\n%P", p->from.offset, p);
switch(mask->e){
case 2: o1 |= 0xF000; break;
case 4: o1 |= 0xE000; break;
case 8: o1 |= 0xC000; break;
case 16: o1 |= 0x8000; break;
case 64: o1 |= ((o1&S64)!=0)<<22; break;
}
o1 |= (mask->r<<16) | ((mask->s-1)<<10);
o1 |= (r<<5) | rt;
break;
case 54: /* floating point arith */
o1 = oprrr(p->as);
if(p->from.type == D_FCONST) {
rf = chipfloat(p->from.ieee);
if(rf < 0 || 1){
diag("invalid floating-point immediate\n%P", p);
rf = 0;
}
rf |= (1<<3);
} else
rf = p->from.reg;
rt = p->to.reg;
r = p->reg;
if((o1 & (0x1F<<24)) == (0x1E<<24) && (o1 & (1<<11)) == 0){ /* monadic */
r = rf;
rf = 0;
}else if(r == NREG)
r = rt;
o1 |= (rf << 16) | (r<<5) | rt;
break;
case 56: /* floating point compare */
o1 = oprrr(p->as);
if(p->from.type == D_FCONST) {
if(p->from.ieee->h != 0 || p->from.ieee->l != 0)
diag("invalid floating-point immediate\n%P", p);
o1 |= 8; /* zero */
rf = 0;
}else
rf = p->from.reg;
rt = p->reg;
o1 |= rf<<16 | rt<<5;
break;
case 57: /* floating point conditional compare */
o1 = oprrr(p->as);
cond = p->from.reg;
nzcv = p->to.offset;
if(nzcv & ~0xF)
diag("implausible condition\n%P", p);
rf = p->reg;
if(p->from3.type != D_FREG)
diag("illegal FCCMP\n%P", p);
rt = p->from3.reg;
o1 |= rf<<16 | cond<<12 | rt<<5 | nzcv;
break;
case 58: /* ldxr */
o1 = opload(p->as);
o1 |= 0x1F<<16;
o1 |= p->from.reg<<5;
if(p->reg != NREG)
o1 |= p->reg<<10;
else
o1 |= 0x1F<<10;
o1 |= p->to.reg;
break;
case 59: /* stxr */
o1 = opstore(p->as);
o1 |= p->reg << 16;
if(p->from3.type != D_NONE)
o1 |= p->from3.reg<<10;
else
o1 |= 0x1F<<10;
o1 |= p->to.reg<<5;
o1 |= p->from.reg;
break;
case 60: /* adrp label,r */
d = brdist(p, 12, 21, 0);
o1 = ADR(1, d, p->to.reg);
break;
case 61: /* adr label, r */
d = brdist(p, 0, 21, 0);
o1 = ADR(0, d, p->to.reg);
break;
case 62: /* case Rv, Rt -> adr tab, Rt; movw Rt[R<<2], Rl; add Rt, Rl; br (Rl) */
o1 = ADR(0, 4*4, p->to.reg); /* adr 4(pc), Rt */
o2 = (2<<30)|(7<<27)|(2<<22)|(1<<21)|(3<<13)|(1<<12)|(2<<10)|(p->from.reg<<16)|(p->to.reg<<5)|REGTMP; /* movw Rt[Rv<<2], REGTMP */
o3 = oprrr(AADD) | (p->to.reg<<16) | (REGTMP<<5) | REGTMP; /* add Rt, REGTMP */
o4 = (0x6b<<25)|(0x1F<<16)|(REGTMP<<5); /* br (REGTMP) */
lastcase = p;
break;
case 63: /* bcase */
if(lastcase == nil){
diag("missing CASE\n%P", p);
break;
}
if(p->cond != P) {
o1 = p->cond->pc - (lastcase->pc + 4*4);
if(dlm)
dynreloc(S, p->pc, 1);
}
break;
/* reloc ops */
case 64: /* movT R,addr */
o1 = omovlit(AMOV, p, &p->to, REGTMP);
o2 = olsr12u(opstr12(p->as), 0, REGTMP, p->from.reg);
break;
case 65: /* movT addr,R */
o1 = omovlit(AMOV, p, &p->from, REGTMP);
o2 = olsr12u(opldr12(p->as), 0, REGTMP, p->to.reg);
break;
}
if(debug['a'] > 1)
Bprint(&bso, "%2d ", o->type);
v = p->pc;
switch(o->size) {
default:
if(debug['a'])
Bprint(&bso, " %.8lux:\t\t%P\n", v, p);
break;
case 4:
if(debug['a'])
Bprint(&bso, " %.8lux: %.8lux\t%P\n", v, o1, p);
lputl(o1);
break;
case 8:
if(debug['a'])
Bprint(&bso, " %.8lux: %.8lux %.8lux%P\n", v, o1, o2, p);
lputl(o1);
lputl(o2);
break;
case 12:
if(debug['a'])
Bprint(&bso, " %.8lux: %.8lux %.8lux %.8lux%P\n", v, o1, o2, o3, p);
lputl(o1);
lputl(o2);
lputl(o3);
break;
case 16:
if(debug['a'])
Bprint(&bso, " %.8lux: %.8lux %.8lux %.8lux %.8lux%P\n",
v, o1, o2, o3, o4, p);
lputl(o1);
lputl(o2);
lputl(o3);
lputl(o4);
break;
case 20:
if(debug['a'])
Bprint(&bso, " %.8lux: %.8lux %.8lux %.8lux %.8lux %.8lux%P\n",
v, o1, o2, o3, o4, o5, p);
lputl(o1);
lputl(o2);
lputl(o3);
lputl(o4);
lputl(o5);
break;
}
}
/*
* basic Rm op Rn -> Rd (using shifted register with 0)
* also op Rn -> Rt
* also Rm*Rn op Ra -> Rd
*/
static long
oprrr(int a)
{
switch(a) {
case AADC: return S64 | 0<<30 | 0<<29 | 0xd0<<21 | 0<<10;
case AADCW: return S32 | 0<<30 | 0<<29 | 0xd0<<21 | 0<<10;
case AADCS: return S64 | 0<<30 | 1<<29 | 0xd0<<21 | 0<<10;
case AADCSW: return S32 | 0<<30 | 1<<29 | 0xd0<<21 | 0<<10;
case ANGC:
case ASBC: return S64 | 1<<30 | 0<<29 | 0xd0<<21 | 0<<10;
case ANGCS:
case ASBCS: return S64 | 1<<30 | 1<<29 | 0xd0<<21 | 0<<10;
case ANGCW:
case ASBCW: return S32 | 1<<30 | 0<<29 | 0xd0<<21 | 0<<10;
case ANGCSW:
case ASBCSW: return S32 | 1<<30 | 1<<29 | 0xd0<<21 | 0<<10;
case AADD: return S64 | 0<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10;
case AADDW: return S32 | 0<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10;
case ACMN:
case AADDS: return S64 | 0<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10;
case ACMNW:
case AADDSW: return S32 | 0<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10;
case ASUB: return S64 | 1<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10;
case ASUBW: return S32 | 1<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10;
case ACMP:
case ASUBS: return S64 | 1<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10;
case ACMPW:
case ASUBSW: return S32 | 1<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10;
case AAND: return S64 | 0<<29 | 0xA<<24;
case AANDW: return S32 | 0<<29 | 0xA<<24;
case AMOV:
case AORR: return S64 | 1<<29 | 0xA<<24;
// case AMOVW:
case AMOVWU:
case AORRW: return S32 | 1<<29 | 0xA<<24;
case AEOR: return S64 | 2<<29 | 0xA<<24;
case AEORW: return S32 | 2<<29 | 0xA<<24;
case AANDS: return S64 | 3<<29 | 0xA<<24;
case AANDSW: return S32 | 3<<29 | 0xA<<24;
case ABIC: return S64 | 0<<29 | 0xA<<24 | 1<<21;
case ABICW: return S32 | 0<<29 | 0xA<<24 | 1<<21;
case ABICS: return S64 | 3<<29 | 0xA<<24 | 1<<21;
case ABICSW: return S32 | 3<<29 | 0xA<<24 | 1<<21;
case AEON: return S64 | 2<<29 | 0xA<<24 | 1<<21;
case AEONW: return S32 | 2<<29 | 0xA<<24 | 1<<21;
case AMVN:
case AORN: return S64 | 1<<29 | 0xA<<24 | 1<<21;
case AMVNW:
case AORNW: return S32 | 1<<29 | 0xA<<24 | 1<<21;
case AASR: return S64 | OPDP2(10); /* also ASRV */
case AASRW: return S32 | OPDP2(10);
case ALSL: return S64 | OPDP2(8);
case ALSLW: return S32 | OPDP2(8);
case ALSR: return S64 | OPDP2(9);
case ALSRW: return S32 | OPDP2(9);
case AROR: return S64 | OPDP2(11);
case ARORW: return S32 | OPDP2(11);
case ACCMN: return S64 | 0<<30 | 1<<29 | 0xD2<<21 | 0<<11 | 0<<10 | 0<<4; /* cond<<12 | nzcv<<0 */
case ACCMNW: return S32 | 0<<30 | 1<<29 | 0xD2<<21 | 0<<11 | 0<<10 | 0<<4;
case ACCMP: return S64 | 1<<30 | 1<<29 | 0xD2<<21 | 0<<11 | 0<<10 | 0<<4; /* imm5<<16 | cond<<12 | nzcv<<0 */
case ACCMPW: return S32 | 1<<30 | 1<<29 | 0xD2<<21 | 0<<11 | 0<<10 | 0<<4;
case ACRC32B: return S32 | OPDP2(16);
case ACRC32H: return S32 | OPDP2(17);
case ACRC32W: return S32 | OPDP2(18);
case ACRC32X: return S64 | OPDP2(19);
case ACRC32CB: return S32 | OPDP2(20);
case ACRC32CH: return S32 | OPDP2(21);
case ACRC32CW: return S32 | OPDP2(22);
case ACRC32CX: return S64 | OPDP2(23);
case ACSEL: return S64 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10;
case ACSELW: return S32 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10;
case ACSET: return S64 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10;
case ACSETW: return S32 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10;
case ACSETM: return S64 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10;
case ACSETMW: return S32 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10;
case ACINC:
case ACSINC: return S64 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10;
case ACINCW:
case ACSINCW: return S32 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10;
case ACINV:
case ACSINV: return S64 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10;
case ACINVW:
case ACSINVW: return S32 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10;
case ACNEG:
case ACSNEG: return S64 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10;
case ACNEGW:
case ACSNEGW: return S32 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10;
case AMUL:
case AMADD: return S64 | 0<<29 | 0x1B<<24 | 0<<21 | 0<<15;
case AMULW:
case AMADDW: return S32 | 0<<29 | 0x1B<<24 | 0<<21 | 0<<15;
case AMNEG:
case AMSUB: return S64 | 0<<29 | 0x1B<<24 | 0<<21 | 1<<15;
case AMNEGW:
case AMSUBW: return S32 | 0<<29 | 0x1B<<24 | 0<<21 | 1<<15;
case AMRS: return SYSOP(1,2,0,0,0,0,0);
case AMSR: return SYSOP(0,2,0,0,0,0,0);
case ANEG: return S64 | 1<<30 | 0<<29 | 0xB<<24 | 0<<21;
case ANEGW: return S32 | 1<<30 | 0<<29 | 0xB<<24 | 0<<21;
case ANEGS: return S64 | 1<<30 | 1<<29 | 0xB<<24 | 0<<21;
case ANEGSW: return S32 | 1<<30 | 1<<29 | 0xB<<24 | 0<<21;
case AREM:
case ASDIV: return S64 | OPDP2(3);
case AREMW:
case ASDIVW: return S32 | OPDP2(3);
case ASMULL:
case ASMADDL: return OPDP3(1, 0, 1, 0);
case ASMNEGL:
case ASMSUBL: return OPDP3(1, 0, 1, 1);
case ASMULH: return OPDP3(1, 0, 2, 0);
case AUMULL:
case AUMADDL: return OPDP3(1, 0, 5, 0);
case AUMNEGL:
case AUMSUBL: return OPDP3(1, 0, 5, 1);
case AUMULH: return OPDP3(1, 0, 6, 0);
case AUREM:
case AUDIV: return S64 | OPDP2(2);
case AUREMW:
case AUDIVW: return S32 | OPDP2(2);
case AAESE: return 0x4E<<24 | 2<<20 | 8<<16 | 4<<12 | 2<<10;
case AAESD: return 0x4E<<24 | 2<<20 | 8<<16 | 5<<12 | 2<<10;
case AAESMC: return 0x4E<<24 | 2<<20 | 8<<16 | 6<<12 | 2<<10;
case AAESIMC: return 0x4E<<24 | 2<<20 | 8<<16 | 7<<12 | 2<<10;
case ASHA1C: return 0x5E<<24 | 0<<12;
case ASHA1P: return 0x5E<<24 | 1<<12;
case ASHA1M: return 0x5E<<24 | 2<<12;
case ASHA1SU0: return 0x5E<<24 | 3<<12;
case ASHA256H: return 0x5E<<24 | 4<<12;
case ASHA256H2: return 0x5E<<24 | 5<<12;
case ASHA256SU1: return 0x5E<<24 | 6<<12;
case ASHA1H: return 0x5E<<24 | 2<<20 | 8<<16 | 0<<12 | 2<<10;
case ASHA1SU1: return 0x5E<<24 | 2<<20 | 8<<16 | 1<<12 | 2<<10;
case ASHA256SU0: return 0x5E<<24 | 2<<20 | 8<<16 | 2<<12 | 2<<10;
case AFCVTZSD: return FPCVTI(1, 0, 1, 3, 0);
case AFCVTZSDW: return FPCVTI(0, 0, 1, 3, 0);
case AFCVTZSS: return FPCVTI(1, 0, 0, 3, 0);
case AFCVTZSSW: return FPCVTI(0, 0, 0, 3, 0);
case AFCVTZUD: return FPCVTI(1, 0, 1, 3, 1);
case AFCVTZUDW: return FPCVTI(0, 0, 1, 3, 1);
case AFCVTZUS: return FPCVTI(1, 0, 0, 3, 1);
case AFCVTZUSW: return FPCVTI(0, 0, 0, 3, 1);
case ASCVTFD: return FPCVTI(1, 0, 1, 0, 2);
case ASCVTFS: return FPCVTI(1, 0, 0, 0, 2);
case ASCVTFWD: return FPCVTI(0, 0, 1, 0, 2);
case ASCVTFWS: return FPCVTI(0, 0, 0, 0, 2);
case AUCVTFD: return FPCVTI(1, 0, 1, 0, 3);
case AUCVTFS: return FPCVTI(1, 0, 0, 0, 3);
case AUCVTFWD: return FPCVTI(0, 0, 1, 0, 3);
case AUCVTFWS: return FPCVTI(0, 0, 0, 0, 3);
case AFADDS: return FPOP2S(0, 0, 0, 2);
case AFADDD: return FPOP2S(0, 0, 1, 2);
case AFSUBS: return FPOP2S(0, 0, 0, 3);
case AFSUBD: return FPOP2S(0, 0, 1, 3);
case AFMULS: return FPOP2S(0, 0, 0, 0);
case AFMULD: return FPOP2S(0, 0, 1, 0);
case AFDIVS: return FPOP2S(0, 0, 0, 1);
case AFDIVD: return FPOP2S(0, 0, 1, 1);
case AFMAXS: return FPOP2S(0, 0, 0, 4);
case AFMINS: return FPOP2S(0, 0, 0, 5);
case AFMAXD: return FPOP2S(0, 0, 1, 4);
case AFMIND: return FPOP2S(0, 0, 1, 5);
case AFMAXNMS: return FPOP2S(0, 0, 0, 6);
case AFMAXNMD: return FPOP2S(0, 0, 1, 6);
case AFMINNMS: return FPOP2S(0, 0, 0, 7);
case AFMINNMD: return FPOP2S(0, 0, 1, 7);
case AFNMULS: return FPOP2S(0, 0, 0, 8);
case AFNMULD: return FPOP2S(0, 0, 1, 8);
case AFCMPS: return FPCMP(0, 0, 0, 0, 0);
case AFCMPD: return FPCMP(0, 0, 1, 0, 0);
case AFCMPES: return FPCMP(0, 0, 0, 0, 16);
case AFCMPED: return FPCMP(0, 0, 1, 0, 16);
case AFCCMPS: return FPCCMP(0, 0, 0, 0);
case AFCCMPD: return FPCCMP(0, 0, 1, 0);
case AFCCMPES: return FPCCMP(0, 0, 0, 1);
case AFCCMPED: return FPCCMP(0, 0, 1, 1);
case AFCSELS: return 0x1E<<24 | 0<<22 | 1<<21 | 3<<10;
case AFCSELD: return 0x1E<<24 | 1<<22 | 1<<21 | 3<<10;
case AFMOVS: return FPOP1S(0, 0, 0, 0);
case AFABSS: return FPOP1S(0, 0, 0, 1);
case AFNEGS: return FPOP1S(0, 0, 0, 2);
case AFSQRTS: return FPOP1S(0, 0, 0, 3);
case AFCVTSD: return FPOP1S(0, 0, 0, 5);
case AFCVTSH: return FPOP1S(0, 0, 0, 7);
case AFRINTNS: return FPOP1S(0, 0, 0, 8);
case AFRINTPS: return FPOP1S(0, 0, 0, 9);
case AFRINTMS: return FPOP1S(0, 0, 0, 10);
case AFRINTZS: return FPOP1S(0, 0, 0, 11);
case AFRINTAS: return FPOP1S(0, 0, 0, 12);
case AFRINTXS: return FPOP1S(0, 0, 0, 14);
case AFRINTIS: return FPOP1S(0, 0, 0, 15);
case AFMOVD: return FPOP1S(0, 0, 1, 0);
case AFABSD: return FPOP1S(0, 0, 1, 1);
case AFNEGD: return FPOP1S(0, 0, 1, 2);
case AFSQRTD: return FPOP1S(0, 0, 1, 3);
case AFCVTDS: return FPOP1S(0, 0, 1, 4);
case AFCVTDH: return FPOP1S(0, 0, 1, 7);
case AFRINTND: return FPOP1S(0, 0, 1, 8);
case AFRINTPD: return FPOP1S(0, 0, 1, 9);
case AFRINTMD: return FPOP1S(0, 0, 1, 10);
case AFRINTZD: return FPOP1S(0, 0, 1, 11);
case AFRINTAD: return FPOP1S(0, 0, 1, 12);
case AFRINTXD: return FPOP1S(0, 0, 1, 14);
case AFRINTID: return FPOP1S(0, 0, 1, 15);
case AFCVTHS: return FPOP1S(0, 0, 3, 4);
case AFCVTHD: return FPOP1S(0, 0, 3, 5);
}
diag("bad rrr %d %A", a, a);
prasm(curp);
return 0;
}
/*
* imm -> Rd
* imm op Rn -> Rd
*/
static long
opirr(int a)
{
switch(a){
/* op $addcon, Rn, Rd */
case AMOV:
case AADD: return S64 | 0<<30 | 0<<29 | 0x11<<24;
case ACMN:
case AADDS: return S64 | 0<<30 | 1<<29 | 0x11<<24;
case AMOVW:
case AADDW: return S32 | 0<<30 | 0<<29 | 0x11<<24;
case ACMNW:
case AADDSW: return S32 | 0<<30 | 1<<29 | 0x11<<24;
case ASUB: return S64 | 1<<30 | 0<<29 | 0x11<<24;
case ACMP:
case ASUBS: return S64 | 1<<30 | 1<<29 | 0x11<<24;
case ASUBW: return S32 | 1<<30 | 0<<29 | 0x11<<24;
case ACMPW:
case ASUBSW: return S32 | 1<<30 | 1<<29 | 0x11<<24;
/* op $imm(SB), Rd; op label, Rd */
case AADR: return 0<<31 | 0x10<<24;
case AADRP: return 1<<31 | 0x10<<24;
/* op $bimm, Rn, Rd */
case AAND: return S64 | 0<<29 | 0x24<<23;
case AANDW: return S32 | 0<<29 | 0x24<<23 | 0<<22;
case AORR: return S64 | 1<<29 | 0x24<<23;
case AORRW: return S32 | 1<<29 | 0x24<<23 | 0<<22;
case AEOR: return S64 | 2<<29 | 0x24<<23;
case AEORW: return S32 | 2<<29 | 0x24<<23 | 0<<22;
case AANDS: return S64 | 3<<29 | 0x24<<23;
case AANDSW: return S32 | 3<<29 | 0x24<<23 | 0<<22;
case AASR: return S64 | 0<<29 | 0x26<<23; /* alias of SBFM */
case AASRW: return S32 | 0<<29 | 0x26<<23 | 0<<22;
/* op $width, $lsb, Rn, Rd */
case ABFI: return S64 | 2<<29 | 0x26<<23 | 1<<22; /* alias of BFM */
case ABFIW: return S32 | 2<<29 | 0x26<<23 | 0<<22;
/* op $imms, $immr, Rn, Rd */
case ABFM: return S64 | 1<<29 | 0x26<<23 | 1<<22;
case ABFMW: return S32 | 1<<29 | 0x26<<23 | 0<<22;
case ASBFM: return S64 | 0<<29 | 0x26<<23 | 1<<22;
case ASBFMW: return S32 | 0<<29 | 0x26<<23 | 0<<22;
case AUBFM: return S64 | 2<<29 | 0x26<<23 | 1<<22;
case AUBFMW: return S32 | 2<<29 | 0x26<<23 | 0<<22;
case ABFXIL: return S64 | 1<<29 | 0x26<<23 | 1<<22; /* alias of BFM */
case ABFXILW: return S32 | 1<<29 | 0x26<<23 | 0<<22;
case AEXTR: return S64 | 0<<29 | 0x27<<23 | 1<<22 | 0<<21;
case AEXTRW: return S32 | 0<<29 | 0x27<<23 | 0<<22 | 0<<21;
case ACBNZ: return S64 | 0x1A<<25 | 1<<24;
case ACBNZW: return S32 | 0x1A<<25 | 1<<24;
case ACBZ: return S64 | 0x1A<<25 | 0<<24;
case ACBZW: return S32 | 0x1A<<25 | 0<<24;
case ACCMN: return S64 | 0<<30 | 1<<29 | 0xD2<<21 | 1<<11 | 0<<10 | 0<<4; /* imm5<<16 | cond<<12 | nzcv<<0 */
case ACCMNW: return S32 | 0<<30 | 1<<29 | 0xD2<<21 | 1<<11 | 0<<10 | 0<<4;
case ACCMP: return S64 | 1<<30 | 1<<29 | 0xD2<<21 | 1<<11 | 0<<10 | 0<<4; /* imm5<<16 | cond<<12 | nzcv<<0 */
case ACCMPW: return S32 | 1<<30 | 1<<29 | 0xD2<<21 | 1<<11 | 0<<10 | 0<<4;
case AMOVK: return S64 | 3<<29 | 0x25<<23;
case AMOVKW: return S32 | 3<<29 | 0x25<<23;
case AMOVN: return S64 | 0<<29 | 0x25<<23;
case AMOVNW: return S32 | 0<<29 | 0x25<<23;
case AMOVZ: return S64 | 2<<29 | 0x25<<23;
case AMOVZW: return S32 | 2<<29 | 0x25<<23;
case AMSR: return SYSOP(0,0,0,4,0,0,0x1F); /* MSR (immediate) */
case AAT:
case ADC:
case AIC:
case ATLBI:
case ASYS: return SYSOP(0,1,0,0,0,0,0);
case ASYSL: return SYSOP(1,1,0,0,0,0,0);
case ATBZ: return 0x36<<24;
case ATBNZ: return 0x37<<24;
case ADSB: return SYSOP(0,0,3,3,0,4,0x1F);
case ADMB: return SYSOP(0,0,3,3,0,5,0x1F);
case AISB: return SYSOP(0,0,3,3,0,6,0x1F);
case AHINT: return SYSOP(0,0,3,2,0,0,0x1F);
}
diag("bad irr %A", a);
prasm(curp);
return 0;
}
/*
* bit operations
*/
#define OPBIT(x) (1<<30 | 0<<29 | 0xD6<<21 | 0<<16 | (x)<<10)
static long
opbit(int a)
{
switch(a){
case ACLS: return S64 | OPBIT(5);
case ACLSW: return S32 | OPBIT(5);
case ACLZ: return S64 | OPBIT(4);
case ACLZW: return S32 | OPBIT(4);
case ARBIT: return S64 | OPBIT(0);
case ARBITW: return S32 | OPBIT(0);
case AREV: return S64 | OPBIT(3);
case AREVW: return S32 | OPBIT(2);
case AREV16: return S64 | OPBIT(1);
case AREV16W: return S32 | OPBIT(1);
case AREV32: return S64 | OPBIT(2);
default:
diag("bad bit op\n%P", curp);
return 0;
}
}
/*
* add/subtract extended register
*/
static long
opxrrr(int a)
{
switch(a) {
case AADD: return S64 | 0<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_64;
case AADDW: return S32 | 0<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_32;
case ACMN:
case AADDS: return S64 | 0<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_64;
case ACMNW:
case AADDSW: return S32 | 0<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_32;
case ASUB: return S64 | 1<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_64;
case ASUBW: return S32 | 1<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_32;
case ACMP:
case ASUBS: return S64 | 1<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_64;
case ACMPW:
case ASUBSW: return S32 | 1<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_32;
}
diag("bad opxrrr %A\n%P", a, curp);
return 0;
}
static long
opimm(int a)
{
switch(a){
case ASVC: return 0xD4<<24 | 0<<21 | 1; /* imm16<<5 */
case AHVC: return 0xD4<<24 | 0<<21 | 2;
case ASMC: return 0xD4<<24 | 0<<21 | 3;
case ABRK: return 0xD4<<24 | 1<<21 | 0;
case AHLT: return 0xD4<<24 | 2<<21 | 0;
case ADCPS1: return 0xD4<<24 | 5<<21 | 1;
case ADCPS2: return 0xD4<<24 | 5<<21 | 2;
case ADCPS3: return 0xD4<<24 | 5<<21 | 3;
case ACLREX: return SYSOP(0,0,3,3,0,2,0x1F);
}
diag("bad imm %A", a);
prasm(curp);
return 0;
}
static vlong
brdist(Prog *p, int preshift, int flen, int shift)
{
vlong v, t;
Sym *s;
v = 0;
if(p->cond == UP) {
s = p->to.sym;
if(s->type != SUNDEF)
diag("bad branch sym type");
v = (uvlong)s->value >> (Roffset-2);
dynreloc(s, p->pc, 0); /* TO DO */
}
else if(p->cond != P)
v = (p->cond->pc>>preshift) - (pc>>preshift);
if((v & ((1<<shift)-1)) != 0)
diag("misaligned label\n%P", p);
v >>= shift;
t = (vlong)1 << (flen-1);
if(v < -t || v >= t)
diag("branch too far\n%P", p);
return v & ((t<<1)-1);
}
/*
* pc-relative branches
*/
static long
opbra(int a)
{
switch(a) {
case ABEQ: return OPBcc(0x0);
case ABNE: return OPBcc(0x1);
case ABCS: return OPBcc(0x2);
case ABHS: return OPBcc(0x2);
case ABCC: return OPBcc(0x3);
case ABLO: return OPBcc(0x3);
case ABMI: return OPBcc(0x4);
case ABPL: return OPBcc(0x5);
case ABVS: return OPBcc(0x6);
case ABVC: return OPBcc(0x7);
case ABHI: return OPBcc(0x8);
case ABLS: return OPBcc(0x9);
case ABGE: return OPBcc(0xa);
case ABLT: return OPBcc(0xb);
case ABGT: return OPBcc(0xc);
case ABLE: return OPBcc(0xd); /* imm19<<5 | cond */
case AB: return 0<<31 | 5<<26; /* imm26 */
case ABL: return 1<<31 | 5<<26;
}
diag("bad bra %A", a);
prasm(curp);
return 0;
}
static long
opbrr(int a)
{
switch(a){
case ABL: return OPBLR(1); /* BLR */
case AB: return OPBLR(0); /* BR */
case ARET: return OPBLR(2); /* RET */
}
diag("bad brr %A", a);
prasm(curp);
return 0;
}
static long
op0(int a)
{
switch(a){
case ADRPS: return 0x6B<<25 | 5<<21 | 0x1F<<16 | 0x1F<<5;
case AERET: return 0x6B<<25 | 4<<21 | 0x1F<<16 | 0<<10 | 0x1F<<5;
case ANOP: return SYSHINT(0);
case AYIELD: return SYSHINT(1);
case AWFE: return SYSHINT(2);
case AWFI: return SYSHINT(3);
case ASEV: return SYSHINT(4);
case ASEVL: return SYSHINT(5);
}
diag("bad op0 %A", a);
prasm(curp);
return 0;
}
/*
* register offset
*/
static long
opload(int a)
{
switch(a){
case ALDAR: return LDSTX(3,1,1,0,1) | 0x1F<<10;
case ALDARW: return LDSTX(2,1,1,0,1) | 0x1F<<10;
case ALDARB: return LDSTX(0,1,1,0,1) | 0x1F<<10;
case ALDARH: return LDSTX(1,1,1,0,1) | 0x1F<<10;
case ALDAXP: return LDSTX(3,0,1,1,1);
case ALDAXPW: return LDSTX(2,0,1,1,1);
case ALDAXR: return LDSTX(3,0,1,0,1) | 0x1F<<10;
case ALDAXRW: return LDSTX(2,1,1,0,1) | 0x1F<<10;
case ALDAXRB: return LDSTX(0,0,1,0,1) | 0x1F<<10;
case ALDAXRH: return LDSTX(1,0,1,0,1) | 0x1F<<10;
case ALDXR: return LDSTX(3,0,1,0,0) | 0x1F<<10;
case ALDXRB: return LDSTX(0,0,1,0,0) | 0x1F<<10;
case ALDXRH: return LDSTX(1,0,1,0,0) | 0x1F<<10;
case ALDXRW: return LDSTX(2,0,1,0,0) | 0x1F<<10;
case ALDXP: return LDSTX(3,0,1,1,0);
case ALDXPW: return LDSTX(2,0,1,1,0);
case AMOVNP: return S64 | 0<<30 | 5<<27 | 0<<26 | 0<<23 | 1<<22;
case AMOVNPW: return S32 | 0<<30 | 5<<27 | 0<<26 | 0<<23 | 1<<22;
}
diag("bad opload %A\n%P", a, curp);
return 0;
}
static long
opstore(int a)
{
switch(a){
case ASTLR: return LDSTX(3,1,0,0,1) | 0x1F<<10;
case ASTLRB: return LDSTX(0,1,0,0,1) | 0x1F<<10;
case ASTLRH: return LDSTX(1,1,0,0,1) | 0x1F<<10;
case ASTLP: return LDSTX(3,0,0,1,1);
case ASTLPW: return LDSTX(2,0,0,1,1);
case ASTLRW: return LDSTX(2,1,0,0,1) | 0x1F<<10;
case ASTLXP: return LDSTX(2,0,0,1,1);
case ASTLXPW: return LDSTX(3,0,0,1,1);
case ASTLXR: return LDSTX(3,0,0,0,1) | 0x1F<<10;
case ASTLXRB: return LDSTX(0,0,0,0,1) | 0x1F<<10;
case ASTLXRH: return LDSTX(1,0,0,0,1) | 0x1F<<10;
case ASTLXRW: return LDSTX(2,0,0,0,1) | 0x1F<<10;
case ASTXR: return LDSTX(3,0,0,0,0) | 0x1F<<10;
case ASTXRB: return LDSTX(0,0,0,0,0) | 0x1F<<10;
case ASTXRH: return LDSTX(1,0,0,0,0) | 0x1F<<10;
case ASTXP: return LDSTX(3,0,0,1,0);
case ASTXPW: return LDSTX(2,0,0,1,0);
case ASTXRW: return LDSTX(2,0,0,0,0) | 0x1F<<10;
case AMOVNP: return S64 | 0<<30 | 5<<27 | 0<<26 | 0<<23 | 1<<22;
case AMOVNPW: return S32 | 0<<30 | 5<<27 | 0<<26 | 0<<23 | 1<<22;
}
diag("bad opstore %A\n%P", a, curp);
return 0;
}
/*
* load/store register (unsigned immediate) C3.3.13
* these produce 64-bit values (when there's an option)
*/
static long
olsr12u(long o, long v, int b, int r)
{
if(v < 0 || v >= (1<<12))
diag("offset out of range: %ld\n%P", v, curp);
o |= (v&0xFFF)<<10;
o |= b << 5;
o |= r;
return o;
}
static long
opldr12(int a)
{
switch(a){
case AMOV: return LDSTR12U(3, 0, 1); /* imm12<<10 | Rn<<5 | Rt */
case AMOVW: return LDSTR12U(2, 0, 2);
case AMOVWU: return LDSTR12U(2, 0, 1);
case AMOVH: return LDSTR12U(1, 0, 2);
case AMOVHU: return LDSTR12U(1, 0, 1);
case AMOVB: return LDSTR12U(0, 0, 2);
case AMOVBU: return LDSTR12U(0, 0, 1);
case AFMOVS: return LDSTR12U(2, 1, 1);
case AFMOVD: return LDSTR12U(3, 1, 1);
}
diag("bad opldr12 %A\n%P", a, curp);
return 0;
}
static long
opstr12(int a)
{
return LD2STR(opldr12(a));
}
/*
* load/store register (unscaled immediate) C3.3.12
*/
static long
olsr9s(long o, long v, int b, int r)
{
if(v < -256 || v > 255)
diag("offset out of range: %ld\n%P", v, curp);
o |= (v&0x1FF)<<12;
o |= b << 5;
o |= r;
return o;
}
static long
opldr9(int a)
{
switch(a){
case AMOV: return LDSTR9S(3, 0, 1); /* simm9<<12 | Rn<<5 | Rt */
case AMOVW: return LDSTR9S(2, 0, 2);
case AMOVWU: return LDSTR9S(2, 0, 1);
case AMOVH: return LDSTR9S(1, 0, 2);
case AMOVHU: return LDSTR9S(1, 0, 1);
case AMOVB: return LDSTR9S(0, 0, 2);
case AMOVBU: return LDSTR9S(0, 0, 1);
case AFMOVS: return LDSTR9S(2, 1, 1);
case AFMOVD: return LDSTR9S(3, 1, 1);
}
diag("bad opldr9 %A\n%P", a, curp);
return 0;
}
static long
opstr9(int a)
{
return LD2STR(opldr9(a));
}
static long
opldrpp(int a)
{
switch(a){
case AMOV: return 3<<30 | 7<<27 | 0<<26 | 0<<24 | 1<<22; /* simm9<<12 | Rn<<5 | Rt */
case AMOVW: return 2<<30 | 7<<27 | 0<<26 | 0<<24 | 2<<22;
case AMOVWU: return 2<<30 | 7<<27 | 0<<26 | 0<<24 | 1<<22;
case AMOVH: return 1<<30 | 7<<27 | 0<<26 | 0<<24 | 2<<22;
case AMOVHU: return 1<<30 | 7<<27 | 0<<26 | 0<<24 | 1<<22;
case AMOVB: return 0<<30 | 7<<27 | 0<<26 | 0<<24 | 2<<22;
case AMOVBU: return 0<<30 | 7<<27 | 0<<26 | 0<<24 | 1<<22;
}
diag("bad opldr %A\n%P", a, curp);
return 0;
}
/*
* load/store register (extended register)
*/
static long
olsxrr(int a, int b, int c, int d)
{
return opldrpp(a) | 1<<21 | b<<16 | 2<<10 | c<<5 | d;
}
static long
oaddi(long o1, long v, int r, int rt)
{
if((v & 0xFFF000) != 0){
v >>= 12;
o1 |= 1<<22;
}
o1 |= ((v & 0xFFF) << 10) | (r<<5) | rt;
return o1;
}
/*
* load a literal value into dr
*/
static long
omovlit(int as, Prog *p, Adr *a, int dr)
{
long v, o1;
int w, fp;
if(p->cond == nil){ /* not in literal pool */
aclass(a);
/* TO DO: could be clever, and use general constant builder */
o1 = opirr(AADD);
v = instoffset;
if(v != 0 && (v & 0xFFF) == 0){
v >>= 12;
o1 |= 1<<22; /* shift, by 12 */
}
if(v < 0 || v > 0xFFF)
diag("literal out of range\n%P", p);
o1 |= ((v& 0xFFF) << 10) | (REGZERO<<5) | dr;
}else{
fp = 0;
w = 0; /* default: 32 bit, unsigned */
switch(as){
case AFMOVS:
fp = 1;
break;
case AFMOVD:
fp = 1;
w = 1; /* 64 bit simd&fp */
break;
case AMOV:
if(p->cond->as == ADWORD)
w = 1; /* 64 bit */
else if(p->cond->to.offset < 0)
w = 2; /* sign extend */
break;
case AMOVB:
case AMOVH:
case AMOVW:
w = 2; /* 32 bit, sign-extended to 64 */
break;
}
v = brdist(p, 0, 19, 2);
o1 = (w<<30)|(fp<<26)|(3<<27);
o1 |= (v&0x7FFFF)<<5;
o1 |= dr;
}
return o1;
}
static long
opbfm(int a, int r, int s, int rf, int rt)
{
long o, c;
o = opirr(a);
if((o & (1<<31)) == 0)
c = 32;
else
c = 64;
if(r < 0 || r >= c)
diag("illegal bit number\n%P", curp);
o |= (r&0x3F)<<16;
if(s < 0 || s >= c)
diag("illegal bit number\n%P", curp);
o |= (s&0x3F)<<10;
o |= (rf<<5) | rt;
return o;
}
static long
opextr(int a, long v, int rn, int rm, int rt)
{
long o, c;
o = opirr(a);
c = (o & (1<<31)) != 0? 63: 31;
if(v < 0 || v > c)
diag("illegal bit number\n%P", curp);
o |= v<<10;
o |= rn << 5;
o |= rm << 16;
o |= rt;
return o;
}
/*
* size in log2(bytes)
*/
static int
movesize(int a)
{
switch(a){
case AMOV:
return 3;
case AMOVW:
case AMOVWU:
return 2;
case AMOVH:
case AMOVHU:
return 1;
case AMOVB:
case AMOVBU:
return 0;
case AFMOVS:
return 2;
case AFMOVD:
return 3;
default:
return -1;
}
}
/*
* SIMD
*/