Stowage/go
2
0
Fork 0
mirror of https://github.com/golang/go.git synced 2025-12-08 06:10:04 +00:00
Code Issues Projects Releases Packages Wiki Activity

cmd/internal/obj/loong64: add ADDU16I.D instruction support

Browse source 
Go asm syntax:
	ADDV16		$(1<<16), R4, R5

Equivalent platform assembler syntax:
	addu16i.d	r5, r4, $1

Change-Id: Ica4a4e779d0a107cda3eade86027abd6458779a4
Reviewed-on: https://go-review.googlesource.com/c/go/+/699056
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
This commit is contained in:
Xiaolin Zhao 2025-08-26 15:40:57 +08:00 • committed by Gopher Robot
parent 00b8474e47
commit ddce0522be
6 changed files with 39 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

7
src/cmd/asm/internal/asm/testdata/loong64enc1.s vendored
View file

@ -282,6 +282,13 @@ lable2:
MOVVP 4(R5), R4 // a4040026
MOVVP (R5), R4 // a4000026
// ADDU16I.D instruction
ADDV16 $(-32768<<16), R4, R5 // ADDV16 $-2147483648, R4, R5 // 85000012
ADDV16 $(0<<16), R4, R5 // ADDV16 $0, R4, R5 // 85000010
ADDV16 $(8<<16), R4, R5 // ADDV16 $524288, R4, R5 // 85200010
ADDV16 $(32767<<16), R4, R5 // ADDV16 $2147418112, R4, R5 // 85fcff11
ADDV16 $(16<<16), R4 // ADDV16 $1048576, R4 // 84400010
// Loong64 atomic memory access instructions
AMSWAPB R14, (R13), R12 // ac395c38
AMSWAPH R14, (R13), R12 // acb95c38

2
src/cmd/asm/internal/asm/testdata/loong64error.s vendored
View file

@ -5,3 +5,5 @@
TEXT errors(SB),$0
VSHUF4IV $16, V1, V2 // ERROR "operand out of range 0 to 15"
XVSHUF4IV $16, X1, X2 // ERROR "operand out of range 0 to 15"
ADDV16 $1, R4, R5 // ERROR "the constant must be a multiple of 65536."
ADDV16 $65535, R4, R5 // ERROR "the constant must be a multiple of 65536."

3
src/cmd/internal/obj/loong64/a.out.go
View file

@ -565,6 +565,9 @@ const (
AMOVVF
AMOVVD
// 2.2.1.2
AADDV16
// 2.2.1.3
AALSLW
AALSLWU

1
src/cmd/internal/obj/loong64/anames.go
View file

@ -125,6 +125,7 @@ var Anames = []string{
"MOVDV",
"MOVVF",
"MOVVD",
"ADDV16",
"ALSLW",
"ALSLWU",
"ALSLV",

15
src/cmd/internal/obj/loong64/asm.go
View file

@ -267,6 +267,9 @@ var optab = []Optab{
{AADDV, C_U12CON, C_REG, C_NONE, C_REG, C_NONE, 10, 8, 0, 0},
{AADDV, C_U12CON, C_NONE, C_NONE, C_REG, C_NONE, 10, 8, 0, 0},
{AADDV16, C_32CON, C_REG, C_NONE, C_REG, C_NONE, 4, 4, 0, 0},
{AADDV16, C_32CON, C_NONE, C_NONE, C_REG, C_NONE, 4, 4, 0, 0},
{AAND, C_UU12CON, C_REG, C_NONE, C_REG, C_NONE, 4, 4, 0, 0},
{AAND, C_UU12CON, C_NONE, C_NONE, C_REG, C_NONE, 4, 4, 0, 0},
{AAND, C_S12CON, C_REG, C_NONE, C_REG, C_NONE, 10, 8, 0, 0},
@ -1520,6 +1523,7 @@ func buildop(ctxt *obj.Link) {
APRELD,
APRELDX,
AFSEL,
AADDV16,
obj.ANOP,
obj.ATEXT,
obj.AFUNCDATA,
@ -2087,7 +2091,14 @@ func (c *ctxt0) asmout(p *obj.Prog, o *Optab, out []uint32) {
if r == 0 {
r = int(p.To.Reg)
}
o1 = OP_12IRR(c.opirr(p.As), uint32(v), uint32(r), uint32(p.To.Reg))
if p.As == AADDV16 {
if v&65535 != 0 {
c.ctxt.Diag("%v: the constant must be a multiple of 65536.\n", p)
}
o1 = OP_16IRR(c.opirr(p.As), uint32(v>>16), uint32(r), uint32(p.To.Reg))
} else {
o1 = OP_12IRR(c.opirr(p.As), uint32(v), uint32(r), uint32(p.To.Reg))
}
case 5: // syscall
v := c.regoff(&p.From)
@ -4033,6 +4044,8 @@ func (c *ctxt0) opirr(a obj.As) uint32 {
return 0x00b << 22
case AADDVU:
return 0x00b << 22
case AADDV16:
return 0x4 << 26
case AJMP:
return 0x14 << 26

12
src/cmd/internal/obj/loong64/doc.go
View file

@ -326,6 +326,18 @@ Note: In the following sections 3.1 to 3.6, "ui4" (4-bit unsigned int immediate)
Go assembly | platform assembly
MOVWP 8(R4), R5 | ldptr.w r5, r4, $2
6. Note of special add instrction
Mapping between Go and platform assembly:
Go assembly | platform assembly
ADDV16 si16<<16, Rj, Rd | addu16i.d rd, rj, si16
note: si16 is a 16-bit immediate number, and si16<<16 is the actual operand.
The addu16i.d instruction logically left-shifts the 16-bit immediate number si16 by 16 bits, then
sign-extends it. The resulting data is added to the [63:0] bits of data in the general-purpose register
rj, and the sum is written into the general-purpose register rd.
The addu16i.d instruction is used in conjunction with the ldptr.w/d and stptr.w/d instructions to
accelerate access based on the GOT table in position-independent code.
*/
package loong64