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| author | Meng Zhuo <mzh@golangcn.org> | 2021-03-16 18:51:41 +0800 |
|---|---|---|
| committer | Meng Zhuo <mzh@golangcn.org> | 2021-03-16 14:31:05 +0000 |
| commit | e31e84010e0989e1df4bd2c55d529497119bb345 (patch) | |
| tree | 59dc67c8c530fa09d3f71bf9c335ec057b28d340 /src/cmd/internal/obj | |
| parent | bd0fc0b9c32e3697380a6484154accacdb928f97 (diff) | |
| download | go-e31e84010e0989e1df4bd2c55d529497119bb345.tar.xz | |
cmd/asm: add rotr/drotr for mips64
This CL encodes:
ROTR rd, rt, sa
ROTRV rd, rt, rs
=> ROTR (SCON|REG), (REG,)? REG
DROTR rd, rt, sa
DROTR32 rd, rt, sa
DROTRV rd, rt, rs
=> ROTRV (SCON|REG), (REG,)? REG
Note: ROTRV will handle const over 32
Ref: The MIPS64® Instruction Set Reference Manual Revision 6.05
Change-Id: Ibe69f999b83eb43843d088cf1ac5a13c995269a5
Reviewed-on: https://go-review.googlesource.com/c/go/+/280114
Trust: Meng Zhuo <mzh@golangcn.org>
Run-TryBot: Meng Zhuo <mzh@golangcn.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Diffstat (limited to 'src/cmd/internal/obj')
| -rw-r--r-- | src/cmd/internal/obj/mips/a.out.go | 2 | ||||
| -rw-r--r-- | src/cmd/internal/obj/mips/anames.go | 2 | ||||
| -rw-r--r-- | src/cmd/internal/obj/mips/asm0.go | 15 |
3 files changed, 18 insertions, 1 deletions
diff --git a/src/cmd/internal/obj/mips/a.out.go b/src/cmd/internal/obj/mips/a.out.go index ddd048a17f..c6ce53a8da 100644 --- a/src/cmd/internal/obj/mips/a.out.go +++ b/src/cmd/internal/obj/mips/a.out.go @@ -390,6 +390,8 @@ const ( AREM AREMU ARFE + AROTR + AROTRV ASC ASCV ASGT diff --git a/src/cmd/internal/obj/mips/anames.go b/src/cmd/internal/obj/mips/anames.go index 2a44e4ca70..ca2ad5ae26 100644 --- a/src/cmd/internal/obj/mips/anames.go +++ b/src/cmd/internal/obj/mips/anames.go @@ -78,6 +78,8 @@ var Anames = []string{ "REM", "REMU", "RFE", + "ROTR", + "ROTRV", "SC", "SCV", "SGT", diff --git a/src/cmd/internal/obj/mips/asm0.go b/src/cmd/internal/obj/mips/asm0.go index fd29f9fa21..e475ffdc14 100644 --- a/src/cmd/internal/obj/mips/asm0.go +++ b/src/cmd/internal/obj/mips/asm0.go @@ -1022,10 +1022,12 @@ func buildop(ctxt *obj.Link) { case ASLL: opset(ASRL, r0) opset(ASRA, r0) + opset(AROTR, r0) case ASLLV: opset(ASRAV, r0) opset(ASRLV, r0) + opset(AROTRV, r0) case ASUB: opset(ASUBU, r0) @@ -1732,12 +1734,16 @@ func (c *ctxt0) oprrr(a obj.As) uint32 { return OP(0, 6) case ASRA: return OP(0, 7) + case AROTR: + return OP(8, 6) case ASLLV: return OP(2, 4) case ASRLV: return OP(2, 6) case ASRAV: return OP(2, 7) + case AROTRV: + return OP(10, 6) case AADDV: return OP(5, 4) case AADDVU: @@ -1916,6 +1922,8 @@ func (c *ctxt0) opirr(a obj.As) uint32 { return OP(0, 2) case ASRA: return OP(0, 3) + case AROTR: + return OP(0, 2) | 1<<21 case AADDV: return SP(3, 0) case AADDVU: @@ -2028,12 +2036,16 @@ func (c *ctxt0) opirr(a obj.As) uint32 { return OP(7, 2) case ASRAV: return OP(7, 3) + case AROTRV: + return OP(7, 2) | 1<<21 case -ASLLV: return OP(7, 4) case -ASRLV: return OP(7, 6) case -ASRAV: return OP(7, 7) + case -AROTRV: + return OP(7, 6) | 1<<21 case ATEQ: return OP(6, 4) @@ -2061,7 +2073,8 @@ func vshift(a obj.As) bool { switch a { case ASLLV, ASRLV, - ASRAV: + ASRAV, + AROTRV: return true } return false |