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cmd/internal/obj: make ppc64's CR subregisters print as CRn rather than Cn

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These 8 registers are windows into the CR register. They are officially CR0
through CR7 and that is what the assembler accepts, but for some reason
they have always printed as C0 through C7. Fix the naming and printing.

Change-Id: I55822c0322c29d3e01a1f2776b3b210ebf9ded21
Reviewed-on: https://go-review.googlesource.com/6290
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Rob Pike 2015-02-27 12:36:15 -08:00
parent d24e62f2fb
commit 2b417dc3e1
10 changed files with 36 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/cmd/9a/a.y
View File

@ -806,7 +806,7 @@ creg:
{
$$ = nullgen;
$$.Type = obj.TYPE_REG;
$$.Reg = int16(REG_C0 + $3);
$$.Reg = int16(REG_CR0 + $3);
}

16
src/cmd/9a/lex.go
View File

@ -101,14 +101,14 @@ var lexinit = []asm.Lextab{
{"SPR", LSPR, ppc64.REG_SPR0},
{"DCR", LSPR, ppc64.REG_DCR0},
{"CR", LCR, ppc64.REG_CR},
{"CR0", LCREG, ppc64.REG_C0},
{"CR1", LCREG, ppc64.REG_C1},
{"CR2", LCREG, ppc64.REG_C2},
{"CR3", LCREG, ppc64.REG_C3},
{"CR4", LCREG, ppc64.REG_C4},
{"CR5", LCREG, ppc64.REG_C5},
{"CR6", LCREG, ppc64.REG_C6},
{"CR7", LCREG, ppc64.REG_C7},
{"CR0", LCREG, ppc64.REG_CR0},
{"CR1", LCREG, ppc64.REG_CR1},
{"CR2", LCREG, ppc64.REG_CR2},
{"CR3", LCREG, ppc64.REG_CR3},
{"CR4", LCREG, ppc64.REG_CR4},
{"CR5", LCREG, ppc64.REG_CR5},
{"CR6", LCREG, ppc64.REG_CR6},
{"CR7", LCREG, ppc64.REG_CR7},
{"R", LR, 0},
{"R0", LREG, ppc64.REG_R0},
{"R1", LREG, ppc64.REG_R1},

2
src/cmd/9a/y.go
View File

@ -1651,7 +1651,7 @@ yydefault:
{
yyVAL.addr = nullgen
yyVAL.addr.Type = obj.TYPE_REG
yyVAL.addr.Reg = int16(REG_C0 + yyDollar[3].lval)
yyVAL.addr.Reg = int16(REG_CR0 + yyDollar[3].lval)
}
case 142:
yyDollar = yyS[yypt-1 : yypt+1]

5
src/cmd/asm/internal/arch/arch.go
View File

@ -372,9 +372,8 @@ func archPPC64() *Arch {
for i := ppc64.REG_F0; i <= ppc64.REG_F31; i++ {
register[obj.Rconv(i)] = int16(i)
}
for i := ppc64.REG_C0; i <= ppc64.REG_C7; i++ {
// TODO: Rconv prints these as C7 but the input syntax requires CR7.
register[fmt.Sprintf("CR%d", i-ppc64.REG_C0)] = int16(i)
for i := ppc64.REG_CR0; i <= ppc64.REG_CR7; i++ {
register[obj.Rconv(i)] = int16(i)
}
for i := ppc64.REG_MSR; i <= ppc64.REG_CR; i++ {
register[obj.Rconv(i)] = int16(i)

2
src/cmd/asm/internal/arch/ppc64.go
View File

@ -68,7 +68,7 @@ func ppc64RegisterNumber(name string, n int16) (int16, bool) {
switch name {
case "CR":
if 0 <= n && n <= 7 {
return ppc64.REG_C0 + n, true
return ppc64.REG_CR0 + n, true
}
case "F":
if 0 <= n && n <= 31 {

2
src/cmd/asm/internal/asm/operand_test.go
View File

@ -359,7 +359,7 @@ var ppc64OperandTests = []operandTest{
{"-1(R4)", "-1(R4)"},
{"-1(R5)", "-1(R5)"},
{"6(PC)", "6(PC)"},
{"CR7", "C7"}, // TODO: Should print CR7.
{"CR7", "CR7"},
{"CTR", "CTR"},
{"F14", "F14"},
{"F15", "F15"},

16
src/cmd/asm/internal/asm/testdata/ppc64.out vendored
View File

@ -31,8 +31,8 @@
145 00031 (testdata/ppc64.s:145) MOVFL FPSCR,F1
151 00032 (testdata/ppc64.s:151) MOVFL F1,FPSCR
157 00033 (testdata/ppc64.s:157) MOVFL F1,$4,FPSCR
163 00034 (testdata/ppc64.s:163) MOVFL FPSCR,C0
184 00035 (testdata/ppc64.s:184) MOVW R1,C1
163 00034 (testdata/ppc64.s:163) MOVFL FPSCR,CR0
184 00035 (testdata/ppc64.s:184) MOVW R1,CR1
190 00036 (testdata/ppc64.s:190) MOVW R1,CR
202 00037 (testdata/ppc64.s:202) ADD R1,R2,R3
208 00038 (testdata/ppc64.s:208) ADD $1,R2,R3
@ -49,7 +49,7 @@
292 00049 (testdata/ppc64.s:292) MOVW $1,R1
298 00050 (testdata/ppc64.s:298) MOVW $1,R1
299 00051 (testdata/ppc64.s:299) MOVW $foo(SB),R1
323 00052 (testdata/ppc64.s:323) MOVFL C0,C1
323 00052 (testdata/ppc64.s:323) MOVFL CR0,CR1
335 00053 (testdata/ppc64.s:335) MOVW CR,R1
341 00054 (testdata/ppc64.s:341) MOVW SPR(0),R1
342 00055 (testdata/ppc64.s:342) MOVW SPR(7),R1
@ -63,8 +63,8 @@
387 00063 (testdata/ppc64.s:387) JMP ,4(R1)
388 00064 (testdata/ppc64.s:388) JMP ,foo(SB)
394 00065 (testdata/ppc64.s:394) JMP ,CTR
413 00066 (testdata/ppc64.s:413) BEQ C1,67(PC)
414 00067 (testdata/ppc64.s:414) BEQ C1,66
413 00066 (testdata/ppc64.s:413) BEQ CR1,67(PC)
414 00067 (testdata/ppc64.s:414) BEQ CR1,66
440 00068 (testdata/ppc64.s:440) BC 4,CTR
450 00069 (testdata/ppc64.s:450) BC $3,R4,66
470 00070 (testdata/ppc64.s:470) BC $3,R3,LR
@ -73,11 +73,11 @@
512 00073 (testdata/ppc64.s:512) FADD F1,F2,F3
518 00074 (testdata/ppc64.s:518) FMADD F1,F2,F3,F4
524 00075 (testdata/ppc64.s:524) FCMPU F1,F2
530 00076 (testdata/ppc64.s:530) FCMPU F1,F2,C0
530 00076 (testdata/ppc64.s:530) FCMPU F1,F2,CR0
539 00077 (testdata/ppc64.s:539) CMP R1,R2
545 00078 (testdata/ppc64.s:545) CMP R1,$4
551 00079 (testdata/ppc64.s:551) CMP R1,C0,R2
557 00080 (testdata/ppc64.s:557) CMP R1,C0,$4
551 00079 (testdata/ppc64.s:551) CMP R1,CR0,R2
557 00080 (testdata/ppc64.s:557) CMP R1,CR0,$4
566 00081 (testdata/ppc64.s:566) RLDC $4,R1,$5,R2
572 00082 (testdata/ppc64.s:572) RLDC $26,R1,$201326592,R2
578 00083 (testdata/ppc64.s:578) RLDC R1,R2,$4,R3

16
src/cmd/internal/obj/ppc64/9.out.go
View File

@ -110,14 +110,14 @@ const (
REG_F30
REG_F31
REG_SPECIAL = obj.RBasePPC64 + 64
REG_C0 = obj.RBasePPC64 + 64 + iota - 65
REG_C1
REG_C2
REG_C3
REG_C4
REG_C5
REG_C6
REG_C7
REG_CR0 = obj.RBasePPC64 + 64 + iota - 65
REG_CR1
REG_CR2
REG_CR3
REG_CR4
REG_CR5
REG_CR6
REG_CR7
REG_MSR = obj.RBasePPC64 + 72 + iota - 73
REG_FPSCR
REG_CR

8
src/cmd/internal/obj/ppc64/asm9.go
View File

@ -554,7 +554,7 @@ func aclass(ctxt *obj.Link, a *obj.Addr) int {
if REG_F0 <= a.Reg && a.Reg <= REG_F31 {
return C_FREG
}
if REG_C0 <= a.Reg && a.Reg <= REG_C7 || a.Reg == REG_CR {
if REG_CR0 <= a.Reg && a.Reg <= REG_CR7 || a.Reg == REG_CR {
return C_CREG
}
if REG_SPR0 <= a.Reg && a.Reg <= REG_SPR0+1023 {
@ -2343,13 +2343,13 @@ func asmout(ctxt *obj.Link, p *obj.Prog, o *Optab, out []uint32) {
o1 = AOP_RRR(o1, uint32(r), 0, 0) | (uint32(v)&0x1f)<<16 | ((uint32(v)>>5)&0x1f)<<11
case 67: /* mcrf crfD,crfS */
if p.From.Type != obj.TYPE_REG || p.From.Reg < REG_C0 || REG_C7 < p.From.Reg || p.To.Type != obj.TYPE_REG || p.To.Reg < REG_C0 || REG_C7 < p.To.Reg {
if p.From.Type != obj.TYPE_REG || p.From.Reg < REG_CR0 || REG_CR7 < p.From.Reg || p.To.Type != obj.TYPE_REG || p.To.Reg < REG_CR0 || REG_CR7 < p.To.Reg {
ctxt.Diag("illegal CR field number\n%v", p)
}
o1 = AOP_RRR(OP_MCRF, ((uint32(p.To.Reg) & 7) << 2), ((uint32(p.From.Reg) & 7) << 2), 0)
case 68: /* mfcr rD; mfocrf CRM,rD */
if p.From.Type == obj.TYPE_REG && REG_C0 <= p.From.Reg && p.From.Reg <= REG_C7 {
if p.From.Type == obj.TYPE_REG && REG_CR0 <= p.From.Reg && p.From.Reg <= REG_CR7 {
v = 1 << uint(7-(p.To.Reg&7)) /* CR(n) */
o1 = AOP_RRR(OP_MFCR, uint32(p.To.Reg), 0, 0) | 1<<20 | uint32(v)<<12 /* new form, mfocrf */
} else {
@ -2392,7 +2392,7 @@ func asmout(ctxt *obj.Link, p *obj.Prog, o *Optab, out []uint32) {
o1 = AOP_RRR(uint32(oprrr(ctxt, int(p.As))), uint32(p.From.Reg), 0, uint32(p.To.Reg))
case 73: /* mcrfs crfD,crfS */
if p.From.Type != obj.TYPE_REG || p.From.Reg != REG_FPSCR || p.To.Type != obj.TYPE_REG || p.To.Reg < REG_C0 || REG_C7 < p.To.Reg {
if p.From.Type != obj.TYPE_REG || p.From.Reg != REG_FPSCR || p.To.Type != obj.TYPE_REG || p.To.Reg < REG_CR0 || REG_CR7 < p.To.Reg {
ctxt.Diag("illegal FPSCR/CR field number\n%v", p)
}
o1 = AOP_RRR(OP_MCRFS, ((uint32(p.To.Reg) & 7) << 2), ((0 & 7) << 2), 0)

4
src/cmd/internal/obj/ppc64/list9.go
View File

@ -142,8 +142,8 @@ func Rconv(r int) string {
if REG_F0 <= r && r <= REG_F31 {
return fmt.Sprintf("F%d", r-REG_F0)
}
if REG_C0 <= r && r <= REG_C7 {
return fmt.Sprintf("C%d", r-REG_C0)
if REG_CR0 <= r && r <= REG_CR7 {
return fmt.Sprintf("CR%d", r-REG_CR0)
}
if r == REG_CR {
return "CR"