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cmd/internal/obj/loong64: add new instructions ALSL{W/WU/V} for loong64

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Go asm syntax:
	ALSL{W/WU/V}	$3, R4, R5, R6

Equivalent platform assembler syntax:
	alsl.{w/wu/d}	$r6, $r4, $r5, 3

Change-Id: Ic8364dfe2753bcea7de6cffe656ca0dde6875766
Reviewed-on: https://go-review.googlesource.com/c/go/+/692136
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Mark Freeman <markfreeman@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
This commit is contained in:
limeidan 2025-07-10 14:30:31 +08:00 • committed by abner chenc
parent a552737418
commit 4c7362e41c
4 changed files with 40 additions and 0 deletions
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27
src/cmd/internal/obj/loong64/asm.go
View file

@ -422,6 +422,8 @@ var optab = []Optab{
{APRELD, C_SOREG, C_U5CON, C_NONE, C_NONE, C_NONE, 47, 4, 0, 0},
{APRELDX, C_SOREG, C_DCON, C_U5CON, C_NONE, C_NONE, 48, 20, 0, 0},
{AALSLV, C_U2CON, C_REG, C_REG, C_REG, C_NONE, 64, 4, 0, 0},
{obj.APCALIGN, C_U12CON, C_NONE, C_NONE, C_NONE, C_NONE, 0, 0, 0, 0},
{obj.APCDATA, C_32CON, C_NONE, C_NONE, C_32CON, C_NONE, 0, 0, 0, 0},
{obj.APCDATA, C_DCON, C_NONE, C_NONE, C_DCON, C_NONE, 0, 0, 0, 0},
@ -1492,6 +1494,10 @@ func buildop(ctxt *obj.Link) {
case ABFPT:
opset(ABFPF, r0)
case AALSLV:
opset(AALSLW, r0)
opset(AALSLWU, r0)
case AMOVW,
AMOVD,
AMOVF,
@ -1948,6 +1954,10 @@ func OP_RR(op uint32, r2 uint32, r3 uint32) uint32 {
return op | (r2&0x1F)<<5 | (r3&0x1F)<<0
}
func OP_2IRRR(op uint32, i uint32, r2 uint32, r3 uint32, r4 uint32) uint32 {
return op | (i&0x3)<<15 | (r2&0x1F)<<10 | (r3&0x1F)<<5 | (r4&0x1F)<<0
}
func OP_16IR_5I(op uint32, i uint32, r2 uint32) uint32 {
return op | (i&0xFFFF)<<10 | (r2&0x1F)<<5 | ((i >> 16) & 0x1F)
}
@ -2717,6 +2727,10 @@ func (c *ctxt0) asmout(p *obj.Prog, o *Optab, out []uint32) {
case 62: // rdtimex rd, rj
o1 = OP_RR(c.oprr(p.As), uint32(p.To.Reg), uint32(p.RegTo2))
case 64: // alsl rd, rj, rk, sa2
r := p.GetFrom3().Reg
o1 = OP_2IRRR(c.opirrr(p.As), uint32(p.From.Offset), uint32(r), uint32(p.Reg), uint32(p.To.Reg))
case 65: // mov sym@GOT, r ==> pcalau12i + ld.d
o1 = OP_IR(c.opir(APCALAU12I), uint32(0), uint32(p.To.Reg))
c.cursym.AddRel(c.ctxt, obj.Reloc{
@ -4244,6 +4258,19 @@ func (c *ctxt0) opirr(a obj.As) uint32 {
return 0
}
func (c *ctxt0) opirrr(a obj.As) uint32 {
switch a {
case AALSLW:
return 0x2 << 17 // alsl.w
case AALSLWU:
return 0x3 << 17 // alsl.wu
case AALSLV:
return 0x16 << 17 // alsl.d
}
return 0
}
func (c *ctxt0) opirir(a obj.As) uint32 {
switch a {
case ABSTRINSW: