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cmd/asm: add s390x crypto related instructions

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This CL add's the following instructions,useful for cipher and
message digest operations:

 * KM   - cipher message
 * KMC  - cipher message with chaining
 * KLMD - compute last message digest
 * KIMD - compute intermediate message digest

Fixes #61163

Change-Id: Ib0636430c3e4888ed61b86c5acae45ee596463ff
Reviewed-on: https://go-review.googlesource.com/c/go/+/509075
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Srinivas Pokala 2023-07-12 14:47:31 +02:00 committed by Cherry Mui
parent fbf9076ee8
commit ed8cbaf6ac
9 changed files with 70 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
src/cmd/asm/internal/asm/testdata/s390x.s vendored
View File

@ -415,6 +415,11 @@ TEXT main·foo(SB),DUPOK|NOSPLIT,$16-0 // TEXT main.foo(SB), DUPOK|NOSPLIT, $16-
SYNC // 07e0
KM R2, R4 // b92e0024
KMC R2, R6 // b92f0026
KLMD R2, R8 // b93f0028
KIMD R0, R4 // b93e0004
// vector add and sub instructions
VAB V3, V4, V4 // e743400000f3
VAH V3, V4, V4 // e743400010f3

6
src/cmd/internal/obj/s390x/a.out.go
View File

@ -480,6 +480,12 @@ const (
// macros
ACLEAR
// crypto
AKM
AKMC
AKLMD
AKIMD
// vector
AVA
AVAB

4
src/cmd/internal/obj/s390x/anames.go
View File

@ -207,6 +207,10 @@ var Anames = []string{
"STCKE",
"STCKF",
"CLEAR",
"KM",
"KMC",
"KLMD",
"KIMD",
"VA",
"VAB",
"VAH",

45
src/cmd/internal/obj/s390x/asmz.go
View File

@ -339,6 +339,11 @@ var optab = []Optab{
// 2 byte no-operation
{i: 66, as: ANOPH},
// crypto instructions
// KM
{i: 124, as: AKM, a1: C_REG, a6: C_REG},
// vector instructions
// VRX store
@ -1480,6 +1485,10 @@ func buildop(ctxt *obj.Link) {
opset(AVFMSDB, r)
opset(AWFMSDB, r)
opset(AVPERM, r)
case AKM:
opset(AKMC, r)
opset(AKLMD, r)
opset(AKIMD, r)
}
}
}
@ -4366,6 +4375,42 @@ func (c *ctxtz) asmout(p *obj.Prog, asm *[]byte) {
op, _, _ := vop(p.As)
m4 := c.regoff(&p.From)
zVRRc(op, uint32(p.To.Reg), uint32(p.Reg), uint32(p.GetFrom3().Reg), 0, 0, uint32(m4), asm)
case 124:
var opcode uint32
switch p.As {
default:
c.ctxt.Diag("unexpected opcode %v", p.As)
case AKM, AKMC, AKLMD:
if p.From.Reg == REG_R0 {
c.ctxt.Diag("input must not be R0 in %v", p)
}
if p.From.Reg&1 != 0 {
c.ctxt.Diag("input must be even register in %v", p)
}
if p.To.Reg == REG_R0 {
c.ctxt.Diag("second argument must not be R0 in %v", p)
}
if p.To.Reg&1 != 0 {
c.ctxt.Diag("second argument must be even register in %v", p)
}
if p.As == AKM {
opcode = op_KM
} else if p.As == AKMC {
opcode = op_KMC
} else {
opcode = op_KLMD
}
case AKIMD:
if p.To.Reg == REG_R0 {
c.ctxt.Diag("second argument must not be R0 in %v", p)
}
if p.To.Reg&1 != 0 {
c.ctxt.Diag("second argument must be even register in %v", p)
}
opcode = op_KIMD
}
zRRE(opcode, uint32(p.From.Reg), uint32(p.To.Reg), asm)
}
}

6
src/crypto/aes/asm_s390x.s
View File

@ -12,7 +12,7 @@ TEXT ·cryptBlocks(SB),NOSPLIT,$0-40
MOVD length+32(FP), R5
MOVD c+0(FP), R0
loop:
WORD $0xB92E0024 // cipher message (KM)
KM R2, R4 // cipher message (KM)
BVS loop // branch back if interrupted
XOR R0, R0
RET
@ -29,7 +29,7 @@ TEXT ·cryptBlocksChain(SB),NOSPLIT,$48-48
MOVD length+40(FP), R5
MOVD c+0(FP), R0
loop:
WORD $0xB92F0024 // cipher message with chaining (KMC)
KMC R2, R4 // cipher message with chaining (KMC)
BVS loop // branch back if interrupted
XOR R0, R0
MVC $16, 0(R1), 0(R8) // update iv
@ -145,7 +145,7 @@ TEXT ·ghash(SB),NOSPLIT,$32-40
STMG R4, R7, (R1)
LMG data+16(FP), R2, R3 // R2=base, R3=len
loop:
WORD $0xB93E0002 // compute intermediate message digest (KIMD)
KIMD R0, R2 // compute intermediate message digest (KIMD)
BVS loop // branch back if interrupted
MVC $16, (R1), (R8)
MOVD $0, R0

2
src/crypto/sha1/sha1block_s390x.s
View File

@ -12,7 +12,7 @@ TEXT ·block(SB), NOSPLIT|NOFRAME, $0-32
CMPBEQ R4, $0, generic
loop:
WORD $0xB93E0002 // KIMD R2
KIMD R0, R2 // compute intermediate message digest (KIMD)
BVS loop // continue if interrupted
RET

2
src/crypto/sha256/sha256block_s390x.s
View File

@ -12,7 +12,7 @@ TEXT ·block(SB), NOSPLIT|NOFRAME, $0-32
CMPBEQ R4, $0, generic
loop:
WORD $0xB93E0002 // KIMD R2
KIMD R0, R2 // compute intermediate message digest (KIMD)
BVS loop // continue if interrupted
RET

2
src/crypto/sha512/sha512block_s390x.s
View File

@ -12,7 +12,7 @@ TEXT ·block(SB), NOSPLIT|NOFRAME, $0-32
CMPBEQ R4, $0, generic
loop:
WORD $0xB93E0002 // KIMD R2
KIMD R0, R2 // compute intermediate message digest (KIMD)
BVS loop // continue if interrupted
RET

8
src/internal/cpu/cpu_s390x.s
View File

@ -16,14 +16,14 @@ TEXT ·stfle(SB), NOSPLIT|NOFRAME, $0-32
TEXT ·kmQuery(SB), NOSPLIT|NOFRAME, $0-16
MOVD $0, R0 // set function code to 0 (KM-Query)
MOVD $ret+0(FP), R1 // address of 16-byte return value
WORD $0xB92E0024 // cipher message (KM)
KM R2, R4 // cipher message (KM)
RET
// func kmcQuery() queryResult
TEXT ·kmcQuery(SB), NOSPLIT|NOFRAME, $0-16
MOVD $0, R0 // set function code to 0 (KMC-Query)
MOVD $ret+0(FP), R1 // address of 16-byte return value
WORD $0xB92F0024 // cipher message with chaining (KMC)
KMC R2, R4 // cipher message with chaining (KMC)
RET
// func kmctrQuery() queryResult
@ -44,14 +44,14 @@ TEXT ·kmaQuery(SB), NOSPLIT|NOFRAME, $0-16
TEXT ·kimdQuery(SB), NOSPLIT|NOFRAME, $0-16
MOVD $0, R0 // set function code to 0 (KIMD-Query)
MOVD $ret+0(FP), R1 // address of 16-byte return value
WORD $0xB93E0024 // compute intermediate message digest (KIMD)
KIMD R2, R4 // compute intermediate message digest (KIMD)
RET
// func klmdQuery() queryResult
TEXT ·klmdQuery(SB), NOSPLIT|NOFRAME, $0-16
MOVD $0, R0 // set function code to 0 (KLMD-Query)
MOVD $ret+0(FP), R1 // address of 16-byte return value
WORD $0xB93F0024 // compute last message digest (KLMD)
KLMD R2, R4 // compute last message digest (KLMD)
RET
// func kdsaQuery() queryResult