func dmethodptr(s *Sym, off int, x *Sym) int {
duintptr(s, off, 0)
r := obj.Addrel(Linksym(s))
r.Off = int32(off)
r.Siz = uint8(Widthptr)
r.Sym = Linksym(x)
r.Type = obj.R_METHOD
return off + Widthptr
}
func dmethodptrOffLSym(s *obj.LSym, ot int, x *obj.LSym) int {
duintxxLSym(s, ot, 0, 4)
r := obj.Addrel(s)
r.Off = int32(ot)
r.Siz = 4
r.Sym = x
r.Type = obj.R_METHODOFF
return ot + 4
}
func asmout(ctxt *obj.Link, p *obj.Prog, o *Optab, out []uint32) {
o1 := uint32(0)
o2 := uint32(0)
o3 := uint32(0)
o4 := uint32(0)
switch o.type_ {
default:
ctxt.Diag("unknown type %d %v", o.type_)
prasm(p)
case 0: /* pseudo ops */
break
case 1: /* mov r1,r2 ==> OR r1,r0,r2 */
o1 = OP_RRR(oprrr(ctxt, AOR), uint32(p.From.Reg), uint32(REGZERO), uint32(p.To.Reg))
case 2: /* add/sub r1,[r2],r3 */
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
o1 = OP_RRR(oprrr(ctxt, int(p.As)), uint32(p.From.Reg), uint32(r), uint32(p.To.Reg))
case 3: /* mov $soreg, r ==> or/add $i,o,r */
v := regoff(ctxt, &p.From)
r := int(p.From.Reg)
if r == 0 {
r = int(o.param)
}
a := AADDVU
if o.a1 == C_ANDCON {
a = AOR
}
o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(r), uint32(p.To.Reg))
case 4: /* add $scon,[r1],r2 */
v := regoff(ctxt, &p.From)
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
o1 = OP_IRR(opirr(ctxt, int(p.As)), uint32(v), uint32(r), uint32(p.To.Reg))
case 5: /* syscall */
o1 = uint32(oprrr(ctxt, int(p.As)))
case 6: /* beq r1,[r2],sbra */
v := int32(0)
if p.Pcond == nil {
v = int32(-4) >> 2
} else {
v = int32(p.Pcond.Pc-p.Pc-4) >> 2
}
if (v<<16)>>16 != v {
ctxt.Diag("short branch too far\n%v", p)
}
o1 = OP_IRR(opirr(ctxt, int(p.As)), uint32(v), uint32(p.From.Reg), uint32(p.Reg))
// for ABFPT and ABFPF only: always fill delay slot with 0
// see comments in func preprocess for details.
o2 = 0
case 7: /* mov r, soreg ==> sw o(r) */
r := int(p.To.Reg)
if r == 0 {
r = int(o.param)
}
v := regoff(ctxt, &p.To)
o1 = OP_IRR(opirr(ctxt, int(p.As)), uint32(v), uint32(r), uint32(p.From.Reg))
case 8: /* mov soreg, r ==> lw o(r) */
r := int(p.From.Reg)
if r == 0 {
r = int(o.param)
}
v := regoff(ctxt, &p.From)
o1 = OP_IRR(opirr(ctxt, int(p.As)+ALAST), uint32(v), uint32(r), uint32(p.To.Reg))
case 9: /* sll r1,[r2],r3 */
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
o1 = OP_RRR(oprrr(ctxt, int(p.As)), uint32(r), uint32(p.From.Reg), uint32(p.To.Reg))
case 10: /* add $con,[r1],r2 ==> mov $con, t; add t,[r1],r2 */
v := regoff(ctxt, &p.From)
a := AOR
if v < 0 {
a = AADDU
}
o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(0), uint32(REGTMP))
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
o2 = OP_RRR(oprrr(ctxt, int(p.As)), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
case 11: /* jmp lbra */
v := int32(0)
if aclass(ctxt, &p.To) == C_SBRA && p.To.Sym == nil && p.As == AJMP {
// use PC-relative branch for short branches
// BEQ R0, R0, sbra
if p.Pcond == nil {
v = int32(-4) >> 2
} else {
v = int32(p.Pcond.Pc-p.Pc-4) >> 2
}
if (v<<16)>>16 == v {
o1 = OP_IRR(opirr(ctxt, ABEQ), uint32(v), uint32(REGZERO), uint32(REGZERO))
break
}
}
if p.Pcond == nil {
v = int32(p.Pc) >> 2
} else {
v = int32(p.Pcond.Pc) >> 2
}
o1 = OP_JMP(opirr(ctxt, int(p.As)), uint32(v))
if p.To.Sym == nil {
p.To.Sym = ctxt.Cursym.Text.From.Sym
p.To.Offset = p.Pcond.Pc
}
rel := obj.Addrel(ctxt.Cursym)
rel.Off = int32(ctxt.Pc)
rel.Siz = 4
rel.Sym = p.To.Sym
rel.Add = p.To.Offset
if p.As == AJAL {
rel.Type = obj.R_CALLMIPS
} else {
rel.Type = obj.R_JMPMIPS
}
case 12: /* movbs r,r */
v := 16
if p.As == AMOVB {
v = 24
}
o1 = OP_SRR(opirr(ctxt, ASLL), uint32(v), uint32(p.From.Reg), uint32(p.To.Reg))
o2 = OP_SRR(opirr(ctxt, ASRA), uint32(v), uint32(p.To.Reg), uint32(p.To.Reg))
case 13: /* movbu r,r */
if p.As == AMOVBU {
o1 = OP_IRR(opirr(ctxt, AAND), uint32(0xff), uint32(p.From.Reg), uint32(p.To.Reg))
} else {
o1 = OP_IRR(opirr(ctxt, AAND), uint32(0xffff), uint32(p.From.Reg), uint32(p.To.Reg))
}
case 14: /* movwu r,r */
o1 = OP_SRR(opirr(ctxt, ASLLV+ALAST), uint32(0), uint32(p.From.Reg), uint32(p.To.Reg))
if p.As == AMOVWU {
o2 = OP_SRR(opirr(ctxt, ASRLV+ALAST), uint32(0), uint32(p.To.Reg), uint32(p.To.Reg))
} else {
o2 = OP_SRR(opirr(ctxt, ASRAV+ALAST), uint32(0), uint32(p.To.Reg), uint32(p.To.Reg))
}
case 16: /* sll $c,[r1],r2 */
v := regoff(ctxt, &p.From)
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
/* OP_SRR will use only the low 5 bits of the shift value */
if v >= 32 && vshift(p.As) {
o1 = OP_SRR(opirr(ctxt, int(p.As)+ALAST), uint32(v-32), uint32(r), uint32(p.To.Reg))
} else {
o1 = OP_SRR(opirr(ctxt, int(p.As)), uint32(v), uint32(r), uint32(p.To.Reg))
}
case 18: /* jmp [r1],0(r2) */
r := int(p.Reg)
if r == 0 {
r = int(o.param)
}
o1 = OP_RRR(oprrr(ctxt, int(p.As)), uint32(0), uint32(p.To.Reg), uint32(r))
rel := obj.Addrel(ctxt.Cursym)
rel.Off = int32(ctxt.Pc)
rel.Siz = 0
rel.Type = obj.R_CALLIND
case 19: /* mov $lcon,r ==> lu+or */
v := regoff(ctxt, &p.From)
o1 = OP_IRR(opirr(ctxt, ALAST), uint32(v>>16), uint32(REGZERO), uint32(p.To.Reg))
o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(p.To.Reg), uint32(p.To.Reg))
if p.From.Sym != nil {
rel := obj.Addrel(ctxt.Cursym)
rel.Off = int32(ctxt.Pc)
rel.Siz = 8
rel.Sym = p.From.Sym
rel.Add = p.From.Offset
rel.Type = obj.R_ADDRMIPS
}
case 20: /* mov lo/hi,r */
a := OP(2, 0) /* mfhi */
if p.From.Reg == REG_LO {
a = OP(2, 2) /* mflo */
}
o1 = OP_RRR(a, uint32(REGZERO), uint32(REGZERO), uint32(p.To.Reg))
case 21: /* mov r,lo/hi */
a := OP(2, 1) /* mthi */
if p.To.Reg == REG_LO {
a = OP(2, 3) /* mtlo */
}
o1 = OP_RRR(a, uint32(REGZERO), uint32(p.From.Reg), uint32(REGZERO))
case 22: /* mul r1,r2 */
o1 = OP_RRR(oprrr(ctxt, int(p.As)), uint32(p.From.Reg), uint32(p.Reg), uint32(REGZERO))
case 23: /* add $lcon,r1,r2 ==> lu+or+add */
v := regoff(ctxt, &p.From)
o1 = OP_IRR(opirr(ctxt, ALAST), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(REGTMP), uint32(REGTMP))
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
o3 = OP_RRR(oprrr(ctxt, int(p.As)), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
case 24: /* mov $ucon,r ==> lu r */
v := regoff(ctxt, &p.From)
o1 = OP_IRR(opirr(ctxt, ALAST), uint32(v>>16), uint32(REGZERO), uint32(p.To.Reg))
case 25: /* add/and $ucon,[r1],r2 ==> lu $con,t; add t,[r1],r2 */
v := regoff(ctxt, &p.From)
o1 = OP_IRR(opirr(ctxt, ALAST), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
o2 = OP_RRR(oprrr(ctxt, int(p.As)), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
case 26: /* mov $lsext/auto/oreg,r ==> lu+or+add */
v := regoff(ctxt, &p.From)
o1 = OP_IRR(opirr(ctxt, ALAST), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(REGTMP), uint32(REGTMP))
r := int(p.From.Reg)
if r == 0 {
r = int(o.param)
}
o3 = OP_RRR(oprrr(ctxt, AADDVU), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
case 27: /* mov [sl]ext/auto/oreg,fr ==> lwc1 o(r) */
v := regoff(ctxt, &p.From)
r := int(p.From.Reg)
if r == 0 {
r = int(o.param)
}
a := AMOVF + ALAST
if p.As == AMOVD {
a = AMOVD + ALAST
}
switch o.size {
case 16:
o1 = OP_IRR(opirr(ctxt, ALAST), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(REGTMP), uint32(REGTMP))
o3 = OP_RRR(opirr(ctxt, AADDVU), uint32(r), uint32(REGTMP), uint32(REGTMP))
o4 = OP_IRR(opirr(ctxt, a), uint32(0), uint32(r), uint32(p.To.Reg))
case 4:
o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(r), uint32(p.To.Reg))
}
case 28: /* mov fr,[sl]ext/auto/oreg ==> swc1 o(r) */
v := regoff(ctxt, &p.To)
r := int(p.To.Reg)
if r == 0 {
r = int(o.param)
}
a := AMOVF
if p.As == AMOVD {
a = AMOVD
}
switch o.size {
case 16:
o1 = OP_IRR(opirr(ctxt, ALAST), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(REGTMP), uint32(REGTMP))
o3 = OP_RRR(opirr(ctxt, AADDVU), uint32(r), uint32(REGTMP), uint32(REGTMP))
o4 = OP_IRR(opirr(ctxt, a), uint32(0), uint32(REGTMP), uint32(p.From.Reg))
case 4:
o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(r), uint32(p.From.Reg))
}
case 30: /* movw r,fr */
a := SP(2, 1) | (4 << 21) /* mtc1 */
o1 = OP_RRR(a, uint32(p.From.Reg), uint32(0), uint32(p.To.Reg))
case 31: /* movw fr,r */
a := SP(2, 1) | (0 << 21) /* mtc1 */
o1 = OP_RRR(a, uint32(p.To.Reg), uint32(0), uint32(p.From.Reg))
case 32: /* fadd fr1,[fr2],fr3 */
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
o1 = OP_FRRR(oprrr(ctxt, int(p.As)), uint32(p.From.Reg), uint32(r), uint32(p.To.Reg))
case 33: /* fabs fr1, fr3 */
o1 = OP_FRRR(oprrr(ctxt, int(p.As)), uint32(0), uint32(p.From.Reg), uint32(p.To.Reg))
case 34: /* mov $con,fr ==> or/add $i,t; mov t,fr */
v := regoff(ctxt, &p.From)
a := AADDU
if o.a1 == C_ANDCON {
a = AOR
}
o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(0), uint32(REGTMP))
o2 = OP_RRR(SP(2, 1)|(4<<21), uint32(REGTMP), uint32(0), uint32(p.To.Reg)) /* mtc1 */
case 35: /* mov r,lext/auto/oreg ==> sw o(r) */
v := regoff(ctxt, &p.To)
r := int(p.To.Reg)
if r == 0 {
r = int(o.param)
}
o1 = OP_IRR(opirr(ctxt, ALAST), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(REGTMP), uint32(REGTMP))
o3 = OP_RRR(oprrr(ctxt, AADDVU), uint32(r), uint32(REGTMP), uint32(REGTMP))
o4 = OP_IRR(opirr(ctxt, int(p.As)), uint32(0), uint32(REGTMP), uint32(p.From.Reg))
case 36: /* mov lext/auto/oreg,r ==> lw o(r30) */
v := regoff(ctxt, &p.From)
r := int(p.From.Reg)
if r == 0 {
r = int(o.param)
}
o1 = OP_IRR(opirr(ctxt, ALAST), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(REGTMP), uint32(REGTMP))
o3 = OP_RRR(oprrr(ctxt, AADDVU), uint32(r), uint32(REGTMP), uint32(REGTMP))
o4 = OP_IRR(opirr(ctxt, int(p.As)+ALAST), uint32(0), uint32(REGTMP), uint32(p.To.Reg))
case 37: /* movw r,mr */
a := SP(2, 0) | (4 << 21) /* mtc0 */
if p.As == AMOVV {
a = SP(2, 0) | (5 << 21) /* dmtc0 */
}
o1 = OP_RRR(a, uint32(p.From.Reg), uint32(0), uint32(p.To.Reg))
case 38: /* movw mr,r */
a := SP(2, 0) | (0 << 21) /* mfc0 */
if p.As == AMOVV {
a = SP(2, 0) | (1 << 21) /* dmfc0 */
}
o1 = OP_RRR(a, uint32(p.To.Reg), uint32(0), uint32(p.From.Reg))
case 40: /* word */
o1 = uint32(regoff(ctxt, &p.From))
case 41: /* movw f,fcr */
o1 = OP_RRR(SP(2, 1)|(2<<21), uint32(REGZERO), uint32(0), uint32(p.To.Reg)) /* mfcc1 */
o2 = OP_RRR(SP(2, 1)|(6<<21), uint32(p.From.Reg), uint32(0), uint32(p.To.Reg)) /* mtcc1 */
case 42: /* movw fcr,r */
o1 = OP_RRR(SP(2, 1)|(2<<21), uint32(p.To.Reg), uint32(0), uint32(p.From.Reg)) /* mfcc1 */
case 47: /* movv r,fr */
a := SP(2, 1) | (5 << 21) /* dmtc1 */
o1 = OP_RRR(a, uint32(p.From.Reg), uint32(0), uint32(p.To.Reg))
case 48: /* movv fr,r */
a := SP(2, 1) | (1 << 21) /* dmtc1 */
o1 = OP_RRR(a, uint32(p.To.Reg), uint32(0), uint32(p.From.Reg))
case 49: /* undef */
o1 = 8 /* JMP (R0) */
/* relocation operations */
case 50: /* mov r,addr ==> lu + or + sw (REGTMP) */
o1 = OP_IRR(opirr(ctxt, ALAST), uint32(0), uint32(REGZERO), uint32(REGTMP))
o2 = OP_IRR(opirr(ctxt, AOR), uint32(0), uint32(REGTMP), uint32(REGTMP))
rel := obj.Addrel(ctxt.Cursym)
rel.Off = int32(ctxt.Pc)
rel.Siz = 8
rel.Sym = p.To.Sym
rel.Add = p.To.Offset
rel.Type = obj.R_ADDRMIPS
o3 = OP_IRR(opirr(ctxt, int(p.As)), uint32(0), uint32(REGTMP), uint32(p.From.Reg))
case 51: /* mov addr,r ==> lu + or + lw (REGTMP) */
o1 = OP_IRR(opirr(ctxt, ALAST), uint32(0), uint32(REGZERO), uint32(REGTMP))
o2 = OP_IRR(opirr(ctxt, AOR), uint32(0), uint32(REGTMP), uint32(REGTMP))
rel := obj.Addrel(ctxt.Cursym)
rel.Off = int32(ctxt.Pc)
rel.Siz = 8
rel.Sym = p.From.Sym
rel.Add = p.From.Offset
rel.Type = obj.R_ADDRMIPS
o3 = OP_IRR(opirr(ctxt, int(p.As)+ALAST), uint32(0), uint32(REGTMP), uint32(p.To.Reg))
}
out[0] = o1
out[1] = o2
out[2] = o3
out[3] = o4
return
}
func preprocess(ctxt *obj.Link, cursym *obj.LSym) {
// TODO(minux): add morestack short-cuts with small fixed frame-size.
ctxt.Cursym = cursym
if cursym.Text == nil || cursym.Text.Link == nil {
return
}
p := cursym.Text
textstksiz := p.To.Offset
if textstksiz == -8 {
// Compatibility hack.
p.From3.Offset |= obj.NOFRAME
textstksiz = 0
}
if textstksiz%8 != 0 {
ctxt.Diag("frame size %d not a multiple of 8", textstksiz)
}
if p.From3.Offset&obj.NOFRAME != 0 {
if textstksiz != 0 {
ctxt.Diag("NOFRAME functions must have a frame size of 0, not %d", textstksiz)
}
}
cursym.Args = p.To.Val.(int32)
cursym.Locals = int32(textstksiz)
/*
* find leaf subroutines
* strip NOPs
* expand RET
* expand BECOME pseudo
*/
if ctxt.Debugvlog != 0 {
fmt.Fprintf(ctxt.Bso, "%5.2f noops\n", obj.Cputime())
}
ctxt.Bso.Flush()
var q *obj.Prog
var q1 *obj.Prog
for p := cursym.Text; p != nil; p = p.Link {
switch p.As {
/* too hard, just leave alone */
case obj.ATEXT:
q = p
p.Mark |= LABEL | LEAF | SYNC
if p.Link != nil {
p.Link.Mark |= LABEL
}
case ANOR:
q = p
if p.To.Type == obj.TYPE_REG {
if p.To.Reg == REGZERO {
p.Mark |= LABEL | SYNC
}
}
case ALWAR,
ASTWCCC,
AECIWX,
AECOWX,
AEIEIO,
AICBI,
AISYNC,
ATLBIE,
ATLBIEL,
ASLBIA,
ASLBIE,
ASLBMFEE,
ASLBMFEV,
ASLBMTE,
ADCBF,
ADCBI,
ADCBST,
ADCBT,
ADCBTST,
ADCBZ,
ASYNC,
ATLBSYNC,
APTESYNC,
ATW,
AWORD,
ARFI,
ARFCI,
ARFID,
AHRFID:
q = p
p.Mark |= LABEL | SYNC
continue
case AMOVW, AMOVWZ, AMOVD:
q = p
if p.From.Reg >= REG_SPECIAL || p.To.Reg >= REG_SPECIAL {
p.Mark |= LABEL | SYNC
}
continue
case AFABS,
AFABSCC,
AFADD,
AFADDCC,
AFCTIW,
AFCTIWCC,
AFCTIWZ,
AFCTIWZCC,
AFDIV,
AFDIVCC,
AFMADD,
AFMADDCC,
AFMOVD,
AFMOVDU,
/* case AFMOVDS: */
AFMOVS,
AFMOVSU,
/* case AFMOVSD: */
AFMSUB,
AFMSUBCC,
AFMUL,
AFMULCC,
AFNABS,
AFNABSCC,
AFNEG,
AFNEGCC,
AFNMADD,
AFNMADDCC,
AFNMSUB,
AFNMSUBCC,
AFRSP,
AFRSPCC,
AFSUB,
AFSUBCC:
q = p
p.Mark |= FLOAT
continue
case ABL,
ABCL,
obj.ADUFFZERO,
obj.ADUFFCOPY:
cursym.Text.Mark &^= LEAF
fallthrough
case ABC,
ABEQ,
ABGE,
ABGT,
ABLE,
ABLT,
ABNE,
ABR,
ABVC,
ABVS:
p.Mark |= BRANCH
q = p
q1 = p.Pcond
if q1 != nil {
for q1.As == obj.ANOP {
q1 = q1.Link
p.Pcond = q1
}
if q1.Mark&LEAF == 0 {
q1.Mark |= LABEL
}
} else {
p.Mark |= LABEL
}
q1 = p.Link
if q1 != nil {
q1.Mark |= LABEL
}
continue
case AFCMPO, AFCMPU:
q = p
p.Mark |= FCMP | FLOAT
continue
case obj.ARET:
q = p
if p.Link != nil {
p.Link.Mark |= LABEL
}
continue
case obj.ANOP:
q1 = p.Link
q.Link = q1 /* q is non-nop */
q1.Mark |= p.Mark
continue
default:
q = p
continue
}
}
autosize := int32(0)
var aoffset int
var mov int
var o int
var p1 *obj.Prog
var p2 *obj.Prog
for p := cursym.Text; p != nil; p = p.Link {
o = int(p.As)
switch o {
case obj.ATEXT:
mov = AMOVD
aoffset = 0
autosize = int32(textstksiz)
if p.Mark&LEAF != 0 && autosize == 0 && p.From3.Offset&obj.NOFRAME == 0 {
// A leaf function with no locals has no frame.
p.From3.Offset |= obj.NOFRAME
}
if p.From3.Offset&obj.NOFRAME == 0 {
// If there is a stack frame at all, it includes
// space to save the LR.
autosize += int32(ctxt.FixedFrameSize())
}
p.To.Offset = int64(autosize)
q = p
if ctxt.Flag_shared != 0 && cursym.Name != "runtime.duffzero" && cursym.Name != "runtime.duffcopy" {
// When compiling Go into PIC, all functions must start
// with instructions to load the TOC pointer into r2:
//
// addis r2, r12, .TOC.-func@ha
// addi r2, r2, .TOC.-func@l+4
//
// We could probably skip this prologue in some situations
// but it's a bit subtle. However, it is both safe and
// necessary to leave the prologue off duffzero and
// duffcopy as we rely on being able to jump to a specific
// instruction offset for them.
//
// These are AWORDS because there is no (afaict) way to
// generate the addis instruction except as part of the
// load of a large constant, and in that case there is no
// way to use r12 as the source.
q = obj.Appendp(ctxt, q)
q.As = AWORD
q.Lineno = p.Lineno
q.From.Type = obj.TYPE_CONST
q.From.Offset = 0x3c4c0000
q = obj.Appendp(ctxt, q)
q.As = AWORD
q.Lineno = p.Lineno
q.From.Type = obj.TYPE_CONST
q.From.Offset = 0x38420000
rel := obj.Addrel(ctxt.Cursym)
rel.Off = 0
rel.Siz = 8
rel.Sym = obj.Linklookup(ctxt, ".TOC.", 0)
rel.Type = obj.R_ADDRPOWER_PCREL
}
if cursym.Text.From3.Offset&obj.NOSPLIT == 0 {
q = stacksplit(ctxt, q, autosize) // emit split check
}
if autosize != 0 {
/* use MOVDU to adjust R1 when saving R31, if autosize is small */
if cursym.Text.Mark&LEAF == 0 && autosize >= -BIG && autosize <= BIG {
mov = AMOVDU
aoffset = int(-autosize)
} else {
q = obj.Appendp(ctxt, q)
q.As = AADD
q.Lineno = p.Lineno
q.From.Type = obj.TYPE_CONST
q.From.Offset = int64(-autosize)
q.To.Type = obj.TYPE_REG
q.To.Reg = REGSP
q.Spadj = +autosize
}
} else if cursym.Text.Mark&LEAF == 0 {
// A very few functions that do not return to their caller
// (e.g. gogo) are not identified as leaves but still have
// no frame.
cursym.Text.Mark |= LEAF
}
if cursym.Text.Mark&LEAF != 0 {
cursym.Leaf = 1
break
}
q = obj.Appendp(ctxt, q)
q.As = AMOVD
q.Lineno = p.Lineno
q.From.Type = obj.TYPE_REG
q.From.Reg = REG_LR
q.To.Type = obj.TYPE_REG
q.To.Reg = REGTMP
q = obj.Appendp(ctxt, q)
q.As = int16(mov)
q.Lineno = p.Lineno
q.From.Type = obj.TYPE_REG
q.From.Reg = REGTMP
q.To.Type = obj.TYPE_MEM
q.To.Offset = int64(aoffset)
q.To.Reg = REGSP
if q.As == AMOVDU {
q.Spadj = int32(-aoffset)
}
if ctxt.Flag_shared != 0 {
q = obj.Appendp(ctxt, q)
q.As = AMOVD
q.Lineno = p.Lineno
q.From.Type = obj.TYPE_REG
q.From.Reg = REG_R2
q.To.Type = obj.TYPE_MEM
q.To.Reg = REGSP
q.To.Offset = 24
}
if cursym.Text.From3.Offset&obj.WRAPPER != 0 {
// if(g->panic != nil && g->panic->argp == FP) g->panic->argp = bottom-of-frame
//
// MOVD g_panic(g), R3
// CMP R0, R3
// BEQ end
// MOVD panic_argp(R3), R4
// ADD $(autosize+8), R1, R5
// CMP R4, R5
// BNE end
// ADD $8, R1, R6
// MOVD R6, panic_argp(R3)
// end:
// NOP
//
// The NOP is needed to give the jumps somewhere to land.
// It is a liblink NOP, not a ppc64 NOP: it encodes to 0 instruction bytes.
q = obj.Appendp(ctxt, q)
q.As = AMOVD
q.From.Type = obj.TYPE_MEM
q.From.Reg = REGG
q.From.Offset = 4 * int64(ctxt.Arch.Ptrsize) // G.panic
q.To.Type = obj.TYPE_REG
q.To.Reg = REG_R3
q = obj.Appendp(ctxt, q)
q.As = ACMP
q.From.Type = obj.TYPE_REG
q.From.Reg = REG_R0
q.To.Type = obj.TYPE_REG
q.To.Reg = REG_R3
q = obj.Appendp(ctxt, q)
q.As = ABEQ
q.To.Type = obj.TYPE_BRANCH
p1 = q
q = obj.Appendp(ctxt, q)
q.As = AMOVD
q.From.Type = obj.TYPE_MEM
q.From.Reg = REG_R3
q.From.Offset = 0 // Panic.argp
q.To.Type = obj.TYPE_REG
q.To.Reg = REG_R4
q = obj.Appendp(ctxt, q)
q.As = AADD
q.From.Type = obj.TYPE_CONST
q.From.Offset = int64(autosize) + ctxt.FixedFrameSize()
q.Reg = REGSP
q.To.Type = obj.TYPE_REG
q.To.Reg = REG_R5
q = obj.Appendp(ctxt, q)
q.As = ACMP
q.From.Type = obj.TYPE_REG
q.From.Reg = REG_R4
q.To.Type = obj.TYPE_REG
q.To.Reg = REG_R5
q = obj.Appendp(ctxt, q)
q.As = ABNE
q.To.Type = obj.TYPE_BRANCH
p2 = q
q = obj.Appendp(ctxt, q)
q.As = AADD
q.From.Type = obj.TYPE_CONST
q.From.Offset = ctxt.FixedFrameSize()
q.Reg = REGSP
q.To.Type = obj.TYPE_REG
q.To.Reg = REG_R6
q = obj.Appendp(ctxt, q)
q.As = AMOVD
q.From.Type = obj.TYPE_REG
q.From.Reg = REG_R6
q.To.Type = obj.TYPE_MEM
q.To.Reg = REG_R3
q.To.Offset = 0 // Panic.argp
q = obj.Appendp(ctxt, q)
q.As = obj.ANOP
p1.Pcond = q
p2.Pcond = q
}
case obj.ARET:
if p.From.Type == obj.TYPE_CONST {
ctxt.Diag("using BECOME (%v) is not supported!", p)
break
}
retTarget := p.To.Sym
if cursym.Text.Mark&LEAF != 0 {
if autosize == 0 {
p.As = ABR
p.From = obj.Addr{}
if retTarget == nil {
p.To.Type = obj.TYPE_REG
p.To.Reg = REG_LR
} else {
p.To.Type = obj.TYPE_BRANCH
p.To.Sym = retTarget
}
p.Mark |= BRANCH
break
}
p.As = AADD
p.From.Type = obj.TYPE_CONST
p.From.Offset = int64(autosize)
p.To.Type = obj.TYPE_REG
p.To.Reg = REGSP
p.Spadj = -autosize
q = ctxt.NewProg()
q.As = ABR
q.Lineno = p.Lineno
q.To.Type = obj.TYPE_REG
q.To.Reg = REG_LR
q.Mark |= BRANCH
q.Spadj = +autosize
q.Link = p.Link
p.Link = q
break
}
p.As = AMOVD
p.From.Type = obj.TYPE_MEM
p.From.Offset = 0
p.From.Reg = REGSP
p.To.Type = obj.TYPE_REG
p.To.Reg = REGTMP
q = ctxt.NewProg()
q.As = AMOVD
q.Lineno = p.Lineno
q.From.Type = obj.TYPE_REG
q.From.Reg = REGTMP
q.To.Type = obj.TYPE_REG
q.To.Reg = REG_LR
q.Link = p.Link
p.Link = q
p = q
if false {
// Debug bad returns
q = ctxt.NewProg()
q.As = AMOVD
q.Lineno = p.Lineno
q.From.Type = obj.TYPE_MEM
q.From.Offset = 0
q.From.Reg = REGTMP
q.To.Type = obj.TYPE_REG
q.To.Reg = REGTMP
q.Link = p.Link
p.Link = q
p = q
}
if autosize != 0 {
q = ctxt.NewProg()
q.As = AADD
q.Lineno = p.Lineno
q.From.Type = obj.TYPE_CONST
q.From.Offset = int64(autosize)
q.To.Type = obj.TYPE_REG
q.To.Reg = REGSP
q.Spadj = -autosize
q.Link = p.Link
p.Link = q
}
q1 = ctxt.NewProg()
q1.As = ABR
q1.Lineno = p.Lineno
if retTarget == nil {
q1.To.Type = obj.TYPE_REG
q1.To.Reg = REG_LR
} else {
q1.To.Type = obj.TYPE_BRANCH
q1.To.Sym = retTarget
}
q1.Mark |= BRANCH
q1.Spadj = +autosize
q1.Link = q.Link
q.Link = q1
case AADD:
if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.From.Type == obj.TYPE_CONST {
p.Spadj = int32(-p.From.Offset)
}
}
}
}
func asmout(ctxt *obj.Link, p *obj.Prog, o *Optab, out []uint32) {
o1 := uint32(0)
o2 := uint32(0)
o3 := uint32(0)
o4 := uint32(0)
add := AADDU
if ctxt.Mode&Mips64 != 0 {
add = AADDVU
}
switch o.type_ {
default:
ctxt.Diag("unknown type %d %v", o.type_)
prasm(p)
case 0: /* pseudo ops */
break
case 1: /* mov r1,r2 ==> OR r1,r0,r2 */
a := AOR
if p.As == AMOVW && ctxt.Mode&Mips64 != 0 {
a = AADDU // sign-extended to high 32 bits
}
o1 = OP_RRR(oprrr(ctxt, a), uint32(REGZERO), uint32(p.From.Reg), uint32(p.To.Reg))
case 2: /* add/sub r1,[r2],r3 */
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
o1 = OP_RRR(oprrr(ctxt, p.As), uint32(p.From.Reg), uint32(r), uint32(p.To.Reg))
case 3: /* mov $soreg, r ==> or/add $i,o,r */
v := regoff(ctxt, &p.From)
r := int(p.From.Reg)
if r == 0 {
r = int(o.param)
}
a := add
if o.a1 == C_ANDCON {
a = AOR
}
o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(r), uint32(p.To.Reg))
case 4: /* add $scon,[r1],r2 */
v := regoff(ctxt, &p.From)
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
o1 = OP_IRR(opirr(ctxt, p.As), uint32(v), uint32(r), uint32(p.To.Reg))
case 5: /* syscall */
o1 = oprrr(ctxt, p.As)
case 6: /* beq r1,[r2],sbra */
v := int32(0)
if p.Pcond == nil {
v = int32(-4) >> 2
} else {
v = int32(p.Pcond.Pc-p.Pc-4) >> 2
}
if (v<<16)>>16 != v {
ctxt.Diag("short branch too far\n%v", p)
}
o1 = OP_IRR(opirr(ctxt, p.As), uint32(v), uint32(p.From.Reg), uint32(p.Reg))
// for ABFPT and ABFPF only: always fill delay slot with 0
// see comments in func preprocess for details.
o2 = 0
case 7: /* mov r, soreg ==> sw o(r) */
r := int(p.To.Reg)
if r == 0 {
r = int(o.param)
}
v := regoff(ctxt, &p.To)
o1 = OP_IRR(opirr(ctxt, p.As), uint32(v), uint32(r), uint32(p.From.Reg))
case 8: /* mov soreg, r ==> lw o(r) */
r := int(p.From.Reg)
if r == 0 {
r = int(o.param)
}
v := regoff(ctxt, &p.From)
o1 = OP_IRR(opirr(ctxt, -p.As), uint32(v), uint32(r), uint32(p.To.Reg))
case 9: /* sll r1,[r2],r3 */
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
o1 = OP_RRR(oprrr(ctxt, p.As), uint32(r), uint32(p.From.Reg), uint32(p.To.Reg))
case 10: /* add $con,[r1],r2 ==> mov $con, t; add t,[r1],r2 */
v := regoff(ctxt, &p.From)
a := AOR
if v < 0 {
a = AADDU
}
o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(0), uint32(REGTMP))
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
o2 = OP_RRR(oprrr(ctxt, p.As), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
case 11: /* jmp lbra */
v := int32(0)
if aclass(ctxt, &p.To) == C_SBRA && p.To.Sym == nil && p.As == AJMP {
// use PC-relative branch for short branches
// BEQ R0, R0, sbra
if p.Pcond == nil {
v = int32(-4) >> 2
} else {
v = int32(p.Pcond.Pc-p.Pc-4) >> 2
}
if (v<<16)>>16 == v {
o1 = OP_IRR(opirr(ctxt, ABEQ), uint32(v), uint32(REGZERO), uint32(REGZERO))
break
}
}
if p.Pcond == nil {
v = int32(p.Pc) >> 2
} else {
v = int32(p.Pcond.Pc) >> 2
}
o1 = OP_JMP(opirr(ctxt, p.As), uint32(v))
if p.To.Sym == nil {
p.To.Sym = ctxt.Cursym.Text.From.Sym
p.To.Offset = p.Pcond.Pc
}
rel := obj.Addrel(ctxt.Cursym)
rel.Off = int32(ctxt.Pc)
rel.Siz = 4
rel.Sym = p.To.Sym
rel.Add = p.To.Offset
if p.As == AJAL {
rel.Type = obj.R_CALLMIPS
} else {
rel.Type = obj.R_JMPMIPS
}
case 12: /* movbs r,r */
v := 16
if p.As == AMOVB {
v = 24
}
o1 = OP_SRR(opirr(ctxt, ASLL), uint32(v), uint32(p.From.Reg), uint32(p.To.Reg))
o2 = OP_SRR(opirr(ctxt, ASRA), uint32(v), uint32(p.To.Reg), uint32(p.To.Reg))
case 13: /* movbu r,r */
if p.As == AMOVBU {
o1 = OP_IRR(opirr(ctxt, AAND), uint32(0xff), uint32(p.From.Reg), uint32(p.To.Reg))
} else {
o1 = OP_IRR(opirr(ctxt, AAND), uint32(0xffff), uint32(p.From.Reg), uint32(p.To.Reg))
}
case 14: /* movwu r,r */
o1 = OP_SRR(opirr(ctxt, -ASLLV), uint32(0), uint32(p.From.Reg), uint32(p.To.Reg))
o2 = OP_SRR(opirr(ctxt, -ASRLV), uint32(0), uint32(p.To.Reg), uint32(p.To.Reg))
case 15: /* teq $c r,r */
v := regoff(ctxt, &p.From)
r := int(p.Reg)
if r == 0 {
r = REGZERO
}
/* only use 10 bits of trap code */
o1 = OP_IRR(opirr(ctxt, p.As), (uint32(v)&0x3FF)<<6, uint32(p.Reg), uint32(p.To.Reg))
case 16: /* sll $c,[r1],r2 */
v := regoff(ctxt, &p.From)
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
/* OP_SRR will use only the low 5 bits of the shift value */
if v >= 32 && vshift(p.As) {
o1 = OP_SRR(opirr(ctxt, -p.As), uint32(v-32), uint32(r), uint32(p.To.Reg))
} else {
o1 = OP_SRR(opirr(ctxt, p.As), uint32(v), uint32(r), uint32(p.To.Reg))
}
case 17:
o1 = OP_RRR(oprrr(ctxt, p.As), uint32(REGZERO), uint32(p.From.Reg), uint32(p.To.Reg))
case 18: /* jmp [r1],0(r2) */
r := int(p.Reg)
if r == 0 {
r = int(o.param)
}
o1 = OP_RRR(oprrr(ctxt, p.As), uint32(0), uint32(p.To.Reg), uint32(r))
rel := obj.Addrel(ctxt.Cursym)
rel.Off = int32(ctxt.Pc)
rel.Siz = 0
rel.Type = obj.R_CALLIND
case 19: /* mov $lcon,r ==> lu+or */
v := regoff(ctxt, &p.From)
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(v>>16), uint32(REGZERO), uint32(p.To.Reg))
o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(p.To.Reg), uint32(p.To.Reg))
case 20: /* mov lo/hi,r */
a := OP(2, 0) /* mfhi */
if p.From.Reg == REG_LO {
a = OP(2, 2) /* mflo */
}
o1 = OP_RRR(a, uint32(REGZERO), uint32(REGZERO), uint32(p.To.Reg))
case 21: /* mov r,lo/hi */
a := OP(2, 1) /* mthi */
if p.To.Reg == REG_LO {
a = OP(2, 3) /* mtlo */
}
o1 = OP_RRR(a, uint32(REGZERO), uint32(p.From.Reg), uint32(REGZERO))
case 22: /* mul r1,r2 [r3]*/
if p.To.Reg != 0 {
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
a := SP(3, 4) | 2 /* mul */
o1 = OP_RRR(a, uint32(p.From.Reg), uint32(r), uint32(p.To.Reg))
} else {
o1 = OP_RRR(oprrr(ctxt, p.As), uint32(p.From.Reg), uint32(p.Reg), uint32(REGZERO))
}
case 23: /* add $lcon,r1,r2 ==> lu+or+add */
v := regoff(ctxt, &p.From)
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(REGTMP), uint32(REGTMP))
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
o3 = OP_RRR(oprrr(ctxt, p.As), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
case 24: /* mov $ucon,r ==> lu r */
v := regoff(ctxt, &p.From)
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(v>>16), uint32(REGZERO), uint32(p.To.Reg))
case 25: /* add/and $ucon,[r1],r2 ==> lu $con,t; add t,[r1],r2 */
v := regoff(ctxt, &p.From)
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
o2 = OP_RRR(oprrr(ctxt, p.As), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
case 26: /* mov $lsext/auto/oreg,r ==> lu+or+add */
v := regoff(ctxt, &p.From)
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(v>>16), uint32(REGZERO), uint32(REGTMP))
o2 = OP_IRR(opirr(ctxt, AOR), uint32(v), uint32(REGTMP), uint32(REGTMP))
r := int(p.From.Reg)
if r == 0 {
r = int(o.param)
}
o3 = OP_RRR(oprrr(ctxt, add), uint32(REGTMP), uint32(r), uint32(p.To.Reg))
case 27: /* mov [sl]ext/auto/oreg,fr ==> lwc1 o(r) */
v := regoff(ctxt, &p.From)
r := int(p.From.Reg)
if r == 0 {
r = int(o.param)
}
a := -AMOVF
if p.As == AMOVD {
a = -AMOVD
}
switch o.size {
case 12:
o1 = OP_IRR(opirr(ctxt, ALUI), uint32((v+1<<15)>>16), uint32(REGZERO), uint32(REGTMP))
o2 = OP_RRR(oprrr(ctxt, add), uint32(r), uint32(REGTMP), uint32(REGTMP))
o3 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(REGTMP), uint32(p.To.Reg))
case 4:
o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(r), uint32(p.To.Reg))
}
case 28: /* mov fr,[sl]ext/auto/oreg ==> swc1 o(r) */
v := regoff(ctxt, &p.To)
r := int(p.To.Reg)
if r == 0 {
r = int(o.param)
}
a := AMOVF
if p.As == AMOVD {
a = AMOVD
}
switch o.size {
case 12:
o1 = OP_IRR(opirr(ctxt, ALUI), uint32((v+1<<15)>>16), uint32(REGZERO), uint32(REGTMP))
o2 = OP_RRR(oprrr(ctxt, add), uint32(r), uint32(REGTMP), uint32(REGTMP))
o3 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(REGTMP), uint32(p.From.Reg))
case 4:
o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(r), uint32(p.From.Reg))
}
case 30: /* movw r,fr */
a := SP(2, 1) | (4 << 21) /* mtc1 */
o1 = OP_RRR(a, uint32(p.From.Reg), uint32(0), uint32(p.To.Reg))
case 31: /* movw fr,r */
a := SP(2, 1) | (0 << 21) /* mtc1 */
o1 = OP_RRR(a, uint32(p.To.Reg), uint32(0), uint32(p.From.Reg))
case 32: /* fadd fr1,[fr2],fr3 */
r := int(p.Reg)
if r == 0 {
r = int(p.To.Reg)
}
o1 = OP_FRRR(oprrr(ctxt, p.As), uint32(p.From.Reg), uint32(r), uint32(p.To.Reg))
case 33: /* fabs fr1, fr3 */
o1 = OP_FRRR(oprrr(ctxt, p.As), uint32(0), uint32(p.From.Reg), uint32(p.To.Reg))
case 34: /* mov $con,fr ==> or/add $i,t; mov t,fr */
v := regoff(ctxt, &p.From)
a := AADDU
if o.a1 == C_ANDCON {
a = AOR
}
o1 = OP_IRR(opirr(ctxt, a), uint32(v), uint32(0), uint32(REGTMP))
o2 = OP_RRR(SP(2, 1)|(4<<21), uint32(REGTMP), uint32(0), uint32(p.To.Reg)) /* mtc1 */
case 35: /* mov r,lext/auto/oreg ==> sw o(REGTMP) */
v := regoff(ctxt, &p.To)
r := int(p.To.Reg)
if r == 0 {
r = int(o.param)
}
o1 = OP_IRR(opirr(ctxt, ALUI), uint32((v+1<<15)>>16), uint32(REGZERO), uint32(REGTMP))
o2 = OP_RRR(oprrr(ctxt, add), uint32(r), uint32(REGTMP), uint32(REGTMP))
o3 = OP_IRR(opirr(ctxt, p.As), uint32(v), uint32(REGTMP), uint32(p.From.Reg))
case 36: /* mov lext/auto/oreg,r ==> lw o(REGTMP) */
v := regoff(ctxt, &p.From)
r := int(p.From.Reg)
if r == 0 {
r = int(o.param)
}
o1 = OP_IRR(opirr(ctxt, ALUI), uint32((v+1<<15)>>16), uint32(REGZERO), uint32(REGTMP))
o2 = OP_RRR(oprrr(ctxt, add), uint32(r), uint32(REGTMP), uint32(REGTMP))
o3 = OP_IRR(opirr(ctxt, -p.As), uint32(v), uint32(REGTMP), uint32(p.To.Reg))
case 37: /* movw r,mr */
a := SP(2, 0) | (4 << 21) /* mtc0 */
if p.As == AMOVV {
a = SP(2, 0) | (5 << 21) /* dmtc0 */
}
o1 = OP_RRR(a, uint32(p.From.Reg), uint32(0), uint32(p.To.Reg))
case 38: /* movw mr,r */
a := SP(2, 0) | (0 << 21) /* mfc0 */
if p.As == AMOVV {
a = SP(2, 0) | (1 << 21) /* dmfc0 */
}
o1 = OP_RRR(a, uint32(p.To.Reg), uint32(0), uint32(p.From.Reg))
case 40: /* word */
o1 = uint32(regoff(ctxt, &p.From))
case 41: /* movw f,fcr */
o1 = OP_RRR(SP(2, 1)|(2<<21), uint32(REGZERO), uint32(0), uint32(p.To.Reg)) /* mfcc1 */
o2 = OP_RRR(SP(2, 1)|(6<<21), uint32(p.From.Reg), uint32(0), uint32(p.To.Reg)) /* mtcc1 */
case 42: /* movw fcr,r */
o1 = OP_RRR(SP(2, 1)|(2<<21), uint32(p.To.Reg), uint32(0), uint32(p.From.Reg)) /* mfcc1 */
case 47: /* movv r,fr */
a := SP(2, 1) | (5 << 21) /* dmtc1 */
o1 = OP_RRR(a, uint32(p.From.Reg), uint32(0), uint32(p.To.Reg))
case 48: /* movv fr,r */
a := SP(2, 1) | (1 << 21) /* dmtc1 */
o1 = OP_RRR(a, uint32(p.To.Reg), uint32(0), uint32(p.From.Reg))
case 49: /* undef */
o1 = 52 /* trap -- teq r0, r0 */
/* relocation operations */
case 50: /* mov r,addr ==> lu + add REGSB, REGTMP + sw o(REGTMP) */
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(0), uint32(REGZERO), uint32(REGTMP))
rel := obj.Addrel(ctxt.Cursym)
rel.Off = int32(ctxt.Pc)
rel.Siz = 4
rel.Sym = p.To.Sym
rel.Add = p.To.Offset
rel.Type = obj.R_ADDRMIPSU
o2 = OP_IRR(opirr(ctxt, p.As), uint32(0), uint32(REGTMP), uint32(p.From.Reg))
rel2 := obj.Addrel(ctxt.Cursym)
rel2.Off = int32(ctxt.Pc + 4)
rel2.Siz = 4
rel2.Sym = p.To.Sym
rel2.Add = p.To.Offset
rel2.Type = obj.R_ADDRMIPS
if o.size == 12 {
o3 = o2
o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(REGSB), uint32(REGTMP), uint32(REGTMP))
rel2.Off += 4
}
case 51: /* mov addr,r ==> lu + add REGSB, REGTMP + lw o(REGTMP) */
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(0), uint32(REGZERO), uint32(REGTMP))
rel := obj.Addrel(ctxt.Cursym)
rel.Off = int32(ctxt.Pc)
rel.Siz = 4
rel.Sym = p.From.Sym
rel.Add = p.From.Offset
rel.Type = obj.R_ADDRMIPSU
o2 = OP_IRR(opirr(ctxt, -p.As), uint32(0), uint32(REGTMP), uint32(p.To.Reg))
rel2 := obj.Addrel(ctxt.Cursym)
rel2.Off = int32(ctxt.Pc + 4)
rel2.Siz = 4
rel2.Sym = p.From.Sym
rel2.Add = p.From.Offset
rel2.Type = obj.R_ADDRMIPS
if o.size == 12 {
o3 = o2
o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(REGSB), uint32(REGTMP), uint32(REGTMP))
rel2.Off += 4
}
case 52: /* mov $lext, r ==> lu + add REGSB, r + add */
o1 = OP_IRR(opirr(ctxt, ALUI), uint32(0), uint32(REGZERO), uint32(p.To.Reg))
rel := obj.Addrel(ctxt.Cursym)
rel.Off = int32(ctxt.Pc)
rel.Siz = 4
rel.Sym = p.From.Sym
rel.Add = p.From.Offset
rel.Type = obj.R_ADDRMIPSU
o2 = OP_IRR(opirr(ctxt, add), uint32(0), uint32(p.To.Reg), uint32(p.To.Reg))
rel2 := obj.Addrel(ctxt.Cursym)
rel2.Off = int32(ctxt.Pc + 4)
rel2.Siz = 4
rel2.Sym = p.From.Sym
rel2.Add = p.From.Offset
rel2.Type = obj.R_ADDRMIPS
if o.size == 12 {
o3 = o2
o2 = OP_RRR(oprrr(ctxt, AADDVU), uint32(REGSB), uint32(p.To.Reg), uint32(p.To.Reg))
rel2.Off += 4
}
case 53: /* mov r, tlsvar ==> rdhwr + sw o(r3) */
// clobbers R3 !
// load thread pointer with RDHWR, R3 is used for fast kernel emulation on Linux
o1 = (037<<26 + 073) | (29 << 11) | (3 << 16) // rdhwr $29, r3
o2 = OP_IRR(opirr(ctxt, p.As), uint32(0), uint32(REG_R3), uint32(p.From.Reg))
rel := obj.Addrel(ctxt.Cursym)
rel.Off = int32(ctxt.Pc + 4)
rel.Siz = 4
rel.Sym = p.To.Sym
rel.Add = p.To.Offset
rel.Type = obj.R_ADDRMIPSTLS
case 54: /* mov tlsvar, r ==> rdhwr + lw o(r3) */
// clobbers R3 !
o1 = (037<<26 + 073) | (29 << 11) | (3 << 16) // rdhwr $29, r3
o2 = OP_IRR(opirr(ctxt, -p.As), uint32(0), uint32(REG_R3), uint32(p.To.Reg))
rel := obj.Addrel(ctxt.Cursym)
rel.Off = int32(ctxt.Pc + 4)
rel.Siz = 4
rel.Sym = p.From.Sym
rel.Add = p.From.Offset
rel.Type = obj.R_ADDRMIPSTLS
case 55: /* mov $tlsvar, r ==> rdhwr + add */
// clobbers R3 !
o1 = (037<<26 + 073) | (29 << 11) | (3 << 16) // rdhwr $29, r3
o2 = OP_IRR(opirr(ctxt, add), uint32(0), uint32(REG_R3), uint32(p.To.Reg))
rel := obj.Addrel(ctxt.Cursym)
rel.Off = int32(ctxt.Pc + 4)
rel.Siz = 4
rel.Sym = p.From.Sym
rel.Add = p.From.Offset
rel.Type = obj.R_ADDRMIPSTLS
}
out[0] = o1
out[1] = o2
out[2] = o3
out[3] = o4
return
}
func dcommontype(s *Sym, ot int, t *Type) int {
if ot != 0 {
Fatalf("dcommontype %d", ot)
}
sizeofAlg := 2 * Widthptr
if dcommontype_algarray == nil {
dcommontype_algarray = Pkglookup("algarray", Runtimepkg)
}
dowidth(t)
alg := algtype(t)
var algsym *Sym
if alg < 0 || alg == AMEM {
algsym = dalgsym(t)
}
tptr := Ptrto(t)
if !Isptr[t.Etype] && (t.Sym != nil || methods(tptr) != nil) {
sptr := dtypesym(tptr)
r := obj.Addrel(Linksym(s))
r.Off = 0
r.Siz = 0
r.Sym = sptr.Lsym
r.Type = obj.R_USETYPE
}
gcsym, useGCProg, ptrdata := dgcsym(t)
// ../../../../reflect/type.go:/^type.rtype
// actual type structure
// type rtype struct {
// size uintptr
// ptrdata uintptr
// hash uint32
// tflag tflag
// align uint8
// fieldAlign uint8
// kind uint8
// alg *typeAlg
// gcdata *byte
// string *string
// }
ot = duintptr(s, ot, uint64(t.Width))
ot = duintptr(s, ot, uint64(ptrdata))
ot = duint32(s, ot, typehash(t))
var tflag uint8
if uncommonSize(t) != 0 {
tflag |= tflagUncommon
}
ot = duint8(s, ot, tflag)
// runtime (and common sense) expects alignment to be a power of two.
i := int(t.Align)
if i == 0 {
i = 1
}
if i&(i-1) != 0 {
Fatalf("invalid alignment %d for %v", t.Align, t)
}
ot = duint8(s, ot, t.Align) // align
ot = duint8(s, ot, t.Align) // fieldAlign
i = kinds[t.Etype]
if t.Etype == TARRAY && t.Bound < 0 {
i = obj.KindSlice
}
if !haspointers(t) {
i |= obj.KindNoPointers
}
if isdirectiface(t) {
i |= obj.KindDirectIface
}
if useGCProg {
i |= obj.KindGCProg
}
ot = duint8(s, ot, uint8(i)) // kind
if algsym == nil {
ot = dsymptr(s, ot, dcommontype_algarray, alg*sizeofAlg)
} else {
ot = dsymptr(s, ot, algsym, 0)
}
ot = dsymptr(s, ot, gcsym, 0) // gcdata
p := Tconv(t, FmtLeft|FmtUnsigned)
// If we're writing out type T,
// we are very likely to write out type *T as well.
// Use the string "*T"[1:] for "T", so that the two
// share storage. This is a cheap way to reduce the
// amount of space taken up by reflect strings.
prefix := 0
if !strings.HasPrefix(p, "*") {
p = "*" + p
prefix = 1
}
_, symdata := stringsym(p) // string
ot = dsymptr(s, ot, symdata, prefix)
ot = duintxx(s, ot, uint64(len(p)-prefix), Widthint)
return ot
}
func dcommontype(s *Sym, ot int, t *Type) int {
if ot != 0 {
Fatalf("dcommontype %d", ot)
}
sizeofAlg := 2 * Widthptr
if dcommontype_algarray == nil {
dcommontype_algarray = Pkglookup("algarray", Runtimepkg)
}
dowidth(t)
alg := algtype(t)
var algsym *Sym
if alg < 0 || alg == AMEM {
algsym = dalgsym(t)
}
tptr := Ptrto(t)
if !Isptr[t.Etype] && (t.Sym != nil || methods(tptr) != nil) {
sptr := dtypesym(tptr)
r := obj.Addrel(Linksym(s))
r.Off = 0
r.Siz = 0
r.Sym = sptr.Lsym
r.Type = obj.R_USETYPE
}
gcsym, useGCProg, ptrdata := dgcsym(t)
// ../../../../reflect/type.go:/^type.rtype
// actual type structure
// type rtype struct {
// size uintptr
// ptrdata uintptr
// hash uint32
// _ uint8
// align uint8
// fieldAlign uint8
// kind uint8
// alg *typeAlg
// gcdata *byte
// string *string
// *uncommonType
// }
ot = duintptr(s, ot, uint64(t.Width))
ot = duintptr(s, ot, uint64(ptrdata))
ot = duint32(s, ot, typehash(t))
ot = duint8(s, ot, 0) // unused
// runtime (and common sense) expects alignment to be a power of two.
i := int(t.Align)
if i == 0 {
i = 1
}
if i&(i-1) != 0 {
Fatalf("invalid alignment %d for %v", t.Align, t)
}
ot = duint8(s, ot, t.Align) // align
ot = duint8(s, ot, t.Align) // fieldAlign
i = kinds[t.Etype]
if t.Etype == TARRAY && t.Bound < 0 {
i = obj.KindSlice
}
if !haspointers(t) {
i |= obj.KindNoPointers
}
if isdirectiface(t) {
i |= obj.KindDirectIface
}
if useGCProg {
i |= obj.KindGCProg
}
ot = duint8(s, ot, uint8(i)) // kind
if algsym == nil {
ot = dsymptr(s, ot, dcommontype_algarray, alg*sizeofAlg)
} else {
ot = dsymptr(s, ot, algsym, 0)
}
ot = dsymptr(s, ot, gcsym, 0) // gcdata
p := Tconv(t, obj.FmtLeft|obj.FmtUnsigned)
_, symdata := stringsym(p) // string
ot = dsymptr(s, ot, symdata, 0)
ot = duintxx(s, ot, uint64(len(p)), Widthint)
//fmt.Printf("dcommontype: %s\n", p)
// skip pointer to extraType,
// which follows the rest of this type structure.
// caller will fill in if needed.
// otherwise linker will assume 0.
ot += Widthptr
return ot
}