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| author | Wim <wim@42.be> | 2017-03-23 23:28:55 +0100 |
|---|---|---|
| committer | Wim <wim@42.be> | 2017-03-23 23:28:55 +0100 |
| commit | 2f68519b3c6b5a70028882c99afeb76f291b7725 (patch) | |
| tree | 2555d0b8b81491f136a176a58e2618a25edc8edc /vendor/github.com/google/gops/internal/obj/arm64/asm7.go | |
| parent | efe641f202653dfd3bc7bde221188e098db3def7 (diff) | |
| download | matterbridge-msglm-2f68519b3c6b5a70028882c99afeb76f291b7725.tar.gz matterbridge-msglm-2f68519b3c6b5a70028882c99afeb76f291b7725.tar.bz2 matterbridge-msglm-2f68519b3c6b5a70028882c99afeb76f291b7725.zip | |
Add gops agentv0.10.2-dev
Diffstat (limited to 'vendor/github.com/google/gops/internal/obj/arm64/asm7.go')
| -rw-r--r-- | vendor/github.com/google/gops/internal/obj/arm64/asm7.go | 4374 |
1 files changed, 4374 insertions, 0 deletions
diff --git a/vendor/github.com/google/gops/internal/obj/arm64/asm7.go b/vendor/github.com/google/gops/internal/obj/arm64/asm7.go new file mode 100644 index 00000000..a6dae2e4 --- /dev/null +++ b/vendor/github.com/google/gops/internal/obj/arm64/asm7.go @@ -0,0 +1,4374 @@ +// cmd/7l/asm.c, cmd/7l/asmout.c, cmd/7l/optab.c, cmd/7l/span.c, cmd/ld/sub.c, cmd/ld/mod.c, from Vita Nuova. +// https://code.google.com/p/ken-cc/source/browse/ +// +// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. +// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) +// Portions Copyright © 1997-1999 Vita Nuova Limited +// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) +// Portions Copyright © 2004,2006 Bruce Ellis +// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) +// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others +// Portions Copyright © 2009 The Go Authors. All rights reserved. +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to deal +// in the Software without restriction, including without limitation the rights +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +// THE SOFTWARE. + +package arm64 + +import ( + "fmt" + "log" + "math" + "sort" + + "github.com/google/gops/internal/obj" +) + +const ( + funcAlign = 16 +) + +const ( + REGFROM = 1 +) + +type Optab struct { + as obj.As + a1 uint8 + a2 uint8 + a3 uint8 + type_ int8 + size int8 + param int16 + flag int8 + scond uint16 +} + +var oprange [ALAST & obj.AMask][]Optab + +var xcmp [C_NCLASS][C_NCLASS]bool + +const ( + S32 = 0 << 31 + S64 = 1 << 31 + Sbit = 1 << 29 + LSL0_32 = 2 << 13 + LSL0_64 = 3 << 13 +) + +func OPDP2(x uint32) uint32 { + return 0<<30 | 0<<29 | 0xd6<<21 | x<<10 +} + +func OPDP3(sf uint32, op54 uint32, op31 uint32, o0 uint32) uint32 { + return sf<<31 | op54<<29 | 0x1B<<24 | op31<<21 | o0<<15 +} + +func OPBcc(x uint32) uint32 { + return 0x2A<<25 | 0<<24 | 0<<4 | x&15 +} + +func OPBLR(x uint32) uint32 { + /* x=0, JMP; 1, CALL; 2, RET */ + return 0x6B<<25 | 0<<23 | x<<21 | 0x1F<<16 | 0<<10 +} + +func SYSOP(l uint32, op0 uint32, op1 uint32, crn uint32, crm uint32, op2 uint32, rt uint32) uint32 { + return 0x354<<22 | l<<21 | op0<<19 | op1<<16 | crn&15<<12 | crm&15<<8 | op2<<5 | rt +} + +func SYSHINT(x uint32) uint32 { + return SYSOP(0, 0, 3, 2, 0, x, 0x1F) +} + +func LDSTR12U(sz uint32, v uint32, opc uint32) uint32 { + return sz<<30 | 7<<27 | v<<26 | 1<<24 | opc<<22 +} + +func LDSTR9S(sz uint32, v uint32, opc uint32) uint32 { + return sz<<30 | 7<<27 | v<<26 | 0<<24 | opc<<22 +} + +func LD2STR(o uint32) uint32 { + return o &^ (3 << 22) +} + +func LDSTX(sz uint32, o2 uint32, l uint32, o1 uint32, o0 uint32) uint32 { + return sz<<30 | 0x8<<24 | o2<<23 | l<<22 | o1<<21 | o0<<15 +} + +func FPCMP(m uint32, s uint32, type_ uint32, op uint32, op2 uint32) uint32 { + return m<<31 | s<<29 | 0x1E<<24 | type_<<22 | 1<<21 | op<<14 | 8<<10 | op2 +} + +func FPCCMP(m uint32, s uint32, type_ uint32, op uint32) uint32 { + return m<<31 | s<<29 | 0x1E<<24 | type_<<22 | 1<<21 | 1<<10 | op<<4 +} + +func FPOP1S(m uint32, s uint32, type_ uint32, op uint32) uint32 { + return m<<31 | s<<29 | 0x1E<<24 | type_<<22 | 1<<21 | op<<15 | 0x10<<10 +} + +func FPOP2S(m uint32, s uint32, type_ uint32, op uint32) uint32 { + return m<<31 | s<<29 | 0x1E<<24 | type_<<22 | 1<<21 | op<<12 | 2<<10 +} + +func FPCVTI(sf uint32, s uint32, type_ uint32, rmode uint32, op uint32) uint32 { + return sf<<31 | s<<29 | 0x1E<<24 | type_<<22 | 1<<21 | rmode<<19 | op<<16 | 0<<10 +} + +func ADR(p uint32, o uint32, rt uint32) uint32 { + return p<<31 | (o&3)<<29 | 0x10<<24 | ((o>>2)&0x7FFFF)<<5 | rt&31 +} + +func OPBIT(x uint32) uint32 { + return 1<<30 | 0<<29 | 0xD6<<21 | 0<<16 | x<<10 +} + +const ( + LFROM = 1 << 0 + LTO = 1 << 1 +) + +var optab = []Optab{ + /* struct Optab: + OPCODE, from, prog->reg, to, type,size,param,flag,scond */ + {obj.ATEXT, C_ADDR, C_NONE, C_TEXTSIZE, 0, 0, 0, 0, 0}, + + /* arithmetic operations */ + {AADD, C_REG, C_REG, C_REG, 1, 4, 0, 0, 0}, + {AADD, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0}, + {AADC, C_REG, C_REG, C_REG, 1, 4, 0, 0, 0}, + {AADC, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0}, + {ANEG, C_REG, C_NONE, C_REG, 25, 4, 0, 0, 0}, + {ANEG, C_NONE, C_NONE, C_REG, 25, 4, 0, 0, 0}, + {ANGC, C_REG, C_NONE, C_REG, 17, 4, 0, 0, 0}, + {ACMP, C_REG, C_REG, C_NONE, 1, 4, 0, 0, 0}, + {AADD, C_ADDCON, C_RSP, C_RSP, 2, 4, 0, 0, 0}, + {AADD, C_ADDCON, C_NONE, C_RSP, 2, 4, 0, 0, 0}, + {ACMP, C_ADDCON, C_RSP, C_NONE, 2, 4, 0, 0, 0}, + {AADD, C_MOVCON, C_RSP, C_RSP, 62, 8, 0, 0, 0}, + {AADD, C_MOVCON, C_NONE, C_RSP, 62, 8, 0, 0, 0}, + {ACMP, C_MOVCON, C_RSP, C_NONE, 62, 8, 0, 0, 0}, + {AADD, C_BITCON, C_RSP, C_RSP, 62, 8, 0, 0, 0}, + {AADD, C_BITCON, C_NONE, C_RSP, 62, 8, 0, 0, 0}, + {ACMP, C_BITCON, C_RSP, C_NONE, 62, 8, 0, 0, 0}, + {AADD, C_VCON, C_RSP, C_RSP, 13, 8, 0, LFROM, 0}, + {AADD, C_VCON, C_NONE, C_RSP, 13, 8, 0, LFROM, 0}, + {ACMP, C_VCON, C_REG, C_NONE, 13, 8, 0, LFROM, 0}, + {AADD, C_SHIFT, C_REG, C_REG, 3, 4, 0, 0, 0}, + {AADD, C_SHIFT, C_NONE, C_REG, 3, 4, 0, 0, 0}, + {AMVN, C_SHIFT, C_NONE, C_REG, 3, 4, 0, 0, 0}, + {ACMP, C_SHIFT, C_REG, C_NONE, 3, 4, 0, 0, 0}, + {ANEG, C_SHIFT, C_NONE, C_REG, 26, 4, 0, 0, 0}, + {AADD, C_REG, C_RSP, C_RSP, 27, 4, 0, 0, 0}, + {AADD, C_REG, C_NONE, C_RSP, 27, 4, 0, 0, 0}, + {ACMP, C_REG, C_RSP, C_NONE, 27, 4, 0, 0, 0}, + {AADD, C_EXTREG, C_RSP, C_RSP, 27, 4, 0, 0, 0}, + {AADD, C_EXTREG, C_NONE, C_RSP, 27, 4, 0, 0, 0}, + {AMVN, C_EXTREG, C_NONE, C_RSP, 27, 4, 0, 0, 0}, + {ACMP, C_EXTREG, C_RSP, C_NONE, 27, 4, 0, 0, 0}, + {AADD, C_REG, C_REG, C_REG, 1, 4, 0, 0, 0}, + {AADD, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0}, + + /* logical operations */ + {AAND, C_REG, C_REG, C_REG, 1, 4, 0, 0, 0}, + {AAND, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0}, + {ABIC, C_REG, C_REG, C_REG, 1, 4, 0, 0, 0}, + {ABIC, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0}, + {AAND, C_BITCON, C_REG, C_REG, 53, 4, 0, 0, 0}, + {AAND, C_BITCON, C_NONE, C_REG, 53, 4, 0, 0, 0}, + {ABIC, C_BITCON, C_REG, C_REG, 53, 4, 0, 0, 0}, + {ABIC, C_BITCON, C_NONE, C_REG, 53, 4, 0, 0, 0}, + {AAND, C_MOVCON, C_REG, C_REG, 62, 8, 0, 0, 0}, + {AAND, C_MOVCON, C_NONE, C_REG, 62, 8, 0, 0, 0}, + {ABIC, C_MOVCON, C_REG, C_REG, 62, 8, 0, 0, 0}, + {ABIC, C_MOVCON, C_NONE, C_REG, 62, 8, 0, 0, 0}, + {AAND, C_VCON, C_REG, C_REG, 28, 8, 0, LFROM, 0}, + {AAND, C_VCON, C_NONE, C_REG, 28, 8, 0, LFROM, 0}, + {ABIC, C_VCON, C_REG, C_REG, 28, 8, 0, LFROM, 0}, + {ABIC, C_VCON, C_NONE, C_REG, 28, 8, 0, LFROM, 0}, + {AAND, C_SHIFT, C_REG, C_REG, 3, 4, 0, 0, 0}, + {AAND, C_SHIFT, C_NONE, C_REG, 3, 4, 0, 0, 0}, + {ABIC, C_SHIFT, C_REG, C_REG, 3, 4, 0, 0, 0}, + {ABIC, C_SHIFT, C_NONE, C_REG, 3, 4, 0, 0, 0}, + {AMOVD, C_RSP, C_NONE, C_RSP, 24, 4, 0, 0, 0}, + {AMVN, C_REG, C_NONE, C_REG, 24, 4, 0, 0, 0}, + {AMOVB, C_REG, C_NONE, C_REG, 45, 4, 0, 0, 0}, + {AMOVBU, C_REG, C_NONE, C_REG, 45, 4, 0, 0, 0}, + {AMOVH, C_REG, C_NONE, C_REG, 45, 4, 0, 0, 0}, /* also MOVHU */ + {AMOVW, C_REG, C_NONE, C_REG, 45, 4, 0, 0, 0}, /* also MOVWU */ + /* TODO: MVN C_SHIFT */ + + /* MOVs that become MOVK/MOVN/MOVZ/ADD/SUB/OR */ + {AMOVW, C_MOVCON, C_NONE, C_REG, 32, 4, 0, 0, 0}, + {AMOVD, C_MOVCON, C_NONE, C_REG, 32, 4, 0, 0, 0}, + + // TODO: these don't work properly. + // { AMOVW, C_ADDCON, C_NONE, C_REG, 2, 4, 0 , 0}, + // { AMOVD, C_ADDCON, C_NONE, C_REG, 2, 4, 0 , 0}, + {AMOVW, C_BITCON, C_NONE, C_REG, 32, 4, 0, 0, 0}, + {AMOVD, C_BITCON, C_NONE, C_REG, 32, 4, 0, 0, 0}, + + {AMOVK, C_VCON, C_NONE, C_REG, 33, 4, 0, 0, 0}, + {AMOVD, C_AACON, C_NONE, C_REG, 4, 4, REGFROM, 0, 0}, + {ASDIV, C_REG, C_NONE, C_REG, 1, 4, 0, 0, 0}, + {ASDIV, C_REG, C_REG, C_REG, 1, 4, 0, 0, 0}, + {AB, C_NONE, C_NONE, C_SBRA, 5, 4, 0, 0, 0}, + {ABL, C_NONE, C_NONE, C_SBRA, 5, 4, 0, 0, 0}, + {AB, C_NONE, C_NONE, C_ZOREG, 6, 4, 0, 0, 0}, + {ABL, C_NONE, C_NONE, C_REG, 6, 4, 0, 0, 0}, + {ABL, C_REG, C_NONE, C_REG, 6, 4, 0, 0, 0}, + {ABL, C_NONE, C_NONE, C_ZOREG, 6, 4, 0, 0, 0}, + {obj.ARET, C_NONE, C_NONE, C_REG, 6, 4, 0, 0, 0}, + {obj.ARET, C_NONE, C_NONE, C_ZOREG, 6, 4, 0, 0, 0}, + {AADRP, C_SBRA, C_NONE, C_REG, 60, 4, 0, 0, 0}, + {AADR, C_SBRA, C_NONE, C_REG, 61, 4, 0, 0, 0}, + {ABFM, C_VCON, C_REG, C_REG, 42, 4, 0, 0, 0}, + {ABFI, C_VCON, C_REG, C_REG, 43, 4, 0, 0, 0}, + {AEXTR, C_VCON, C_REG, C_REG, 44, 4, 0, 0, 0}, + {ASXTB, C_REG, C_NONE, C_REG, 45, 4, 0, 0, 0}, + {ACLS, C_REG, C_NONE, C_REG, 46, 4, 0, 0, 0}, + {ABEQ, C_NONE, C_NONE, C_SBRA, 7, 4, 0, 0, 0}, + {ALSL, C_VCON, C_REG, C_REG, 8, 4, 0, 0, 0}, + {ALSL, C_VCON, C_NONE, C_REG, 8, 4, 0, 0, 0}, + {ALSL, C_REG, C_NONE, C_REG, 9, 4, 0, 0, 0}, + {ALSL, C_REG, C_REG, C_REG, 9, 4, 0, 0, 0}, + {ASVC, C_NONE, C_NONE, C_VCON, 10, 4, 0, 0, 0}, + {ASVC, C_NONE, C_NONE, C_NONE, 10, 4, 0, 0, 0}, + {ADWORD, C_NONE, C_NONE, C_VCON, 11, 8, 0, 0, 0}, + {ADWORD, C_NONE, C_NONE, C_LEXT, 11, 8, 0, 0, 0}, + {ADWORD, C_NONE, C_NONE, C_ADDR, 11, 8, 0, 0, 0}, + {ADWORD, C_NONE, C_NONE, C_LACON, 11, 8, 0, 0, 0}, + {AWORD, C_NONE, C_NONE, C_LCON, 14, 4, 0, 0, 0}, + {AWORD, C_NONE, C_NONE, C_LEXT, 14, 4, 0, 0, 0}, + {AWORD, C_NONE, C_NONE, C_ADDR, 14, 4, 0, 0, 0}, + {AMOVW, C_VCON, C_NONE, C_REG, 12, 4, 0, LFROM, 0}, + {AMOVW, C_VCONADDR, C_NONE, C_REG, 68, 8, 0, 0, 0}, + {AMOVD, C_VCON, C_NONE, C_REG, 12, 4, 0, LFROM, 0}, + {AMOVD, C_VCONADDR, C_NONE, C_REG, 68, 8, 0, 0, 0}, + {AMOVB, C_REG, C_NONE, C_ADDR, 64, 12, 0, 0, 0}, + {AMOVBU, C_REG, C_NONE, C_ADDR, 64, 12, 0, 0, 0}, + {AMOVH, C_REG, C_NONE, C_ADDR, 64, 12, 0, 0, 0}, + {AMOVW, C_REG, C_NONE, C_ADDR, 64, 12, 0, 0, 0}, + {AMOVD, C_REG, C_NONE, C_ADDR, 64, 12, 0, 0, 0}, + {AMOVB, C_ADDR, C_NONE, C_REG, 65, 12, 0, 0, 0}, + {AMOVBU, C_ADDR, C_NONE, C_REG, 65, 12, 0, 0, 0}, + {AMOVH, C_ADDR, C_NONE, C_REG, 65, 12, 0, 0, 0}, + {AMOVW, C_ADDR, C_NONE, C_REG, 65, 12, 0, 0, 0}, + {AMOVD, C_ADDR, C_NONE, C_REG, 65, 12, 0, 0, 0}, + {AMOVD, C_GOTADDR, C_NONE, C_REG, 71, 8, 0, 0, 0}, + {AMOVD, C_TLS_LE, C_NONE, C_REG, 69, 4, 0, 0, 0}, + {AMOVD, C_TLS_IE, C_NONE, C_REG, 70, 8, 0, 0, 0}, + {AMUL, C_REG, C_REG, C_REG, 15, 4, 0, 0, 0}, + {AMUL, C_REG, C_NONE, C_REG, 15, 4, 0, 0, 0}, + {AMADD, C_REG, C_REG, C_REG, 15, 4, 0, 0, 0}, + {AREM, C_REG, C_REG, C_REG, 16, 8, 0, 0, 0}, + {AREM, C_REG, C_NONE, C_REG, 16, 8, 0, 0, 0}, + {ACSEL, C_COND, C_REG, C_REG, 18, 4, 0, 0, 0}, /* from3 optional */ + {ACSET, C_COND, C_NONE, C_REG, 18, 4, 0, 0, 0}, + {ACCMN, C_COND, C_REG, C_VCON, 19, 4, 0, 0, 0}, /* from3 either C_REG or C_VCON */ + + /* scaled 12-bit unsigned displacement store */ + {AMOVB, C_REG, C_NONE, C_UAUTO4K, 20, 4, REGSP, 0, 0}, + {AMOVB, C_REG, C_NONE, C_UOREG4K, 20, 4, 0, 0, 0}, + {AMOVBU, C_REG, C_NONE, C_UAUTO4K, 20, 4, REGSP, 0, 0}, + {AMOVBU, C_REG, C_NONE, C_UOREG4K, 20, 4, 0, 0, 0}, + + {AMOVH, C_REG, C_NONE, C_UAUTO8K, 20, 4, REGSP, 0, 0}, + {AMOVH, C_REG, C_NONE, C_ZOREG, 20, 4, 0, 0, 0}, + {AMOVH, C_REG, C_NONE, C_UOREG8K, 20, 4, 0, 0, 0}, + + {AMOVW, C_REG, C_NONE, C_UAUTO16K, 20, 4, REGSP, 0, 0}, + {AMOVW, C_REG, C_NONE, C_ZOREG, 20, 4, 0, 0, 0}, + {AMOVW, C_REG, C_NONE, C_UOREG16K, 20, 4, 0, 0, 0}, + + /* unscaled 9-bit signed displacement store */ + {AMOVB, C_REG, C_NONE, C_NSAUTO, 20, 4, REGSP, 0, 0}, + {AMOVB, C_REG, C_NONE, C_NSOREG, 20, 4, 0, 0, 0}, + {AMOVBU, C_REG, C_NONE, C_NSAUTO, 20, 4, REGSP, 0, 0}, + {AMOVBU, C_REG, C_NONE, C_NSOREG, 20, 4, 0, 0, 0}, + + {AMOVH, C_REG, C_NONE, C_NSAUTO, 20, 4, REGSP, 0, 0}, + {AMOVH, C_REG, C_NONE, C_NSOREG, 20, 4, 0, 0, 0}, + {AMOVW, C_REG, C_NONE, C_NSAUTO, 20, 4, REGSP, 0, 0}, + {AMOVW, C_REG, C_NONE, C_NSOREG, 20, 4, 0, 0, 0}, + + {AMOVD, C_REG, C_NONE, C_UAUTO32K, 20, 4, REGSP, 0, 0}, + {AMOVD, C_REG, C_NONE, C_ZOREG, 20, 4, 0, 0, 0}, + {AMOVD, C_REG, C_NONE, C_UOREG32K, 20, 4, 0, 0, 0}, + {AMOVD, C_REG, C_NONE, C_NSOREG, 20, 4, 0, 0, 0}, + {AMOVD, C_REG, C_NONE, C_NSAUTO, 20, 4, REGSP, 0, 0}, + + /* short displacement load */ + {AMOVB, C_UAUTO4K, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + {AMOVB, C_NSAUTO, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + {AMOVB, C_ZOREG, C_NONE, C_REG, 21, 4, 0, 0, 0}, + {AMOVB, C_UOREG4K, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + {AMOVB, C_NSOREG, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + + {AMOVBU, C_UAUTO4K, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + {AMOVBU, C_NSAUTO, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + {AMOVBU, C_ZOREG, C_NONE, C_REG, 21, 4, 0, 0, 0}, + {AMOVBU, C_UOREG4K, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + {AMOVBU, C_NSOREG, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + + {AMOVH, C_UAUTO8K, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + {AMOVH, C_NSAUTO, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + {AMOVH, C_ZOREG, C_NONE, C_REG, 21, 4, 0, 0, 0}, + {AMOVH, C_UOREG8K, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + {AMOVH, C_NSOREG, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + + {AMOVW, C_UAUTO16K, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + {AMOVW, C_NSAUTO, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + {AMOVW, C_ZOREG, C_NONE, C_REG, 21, 4, 0, 0, 0}, + {AMOVW, C_UOREG16K, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + {AMOVW, C_NSOREG, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + + {AMOVD, C_UAUTO32K, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + {AMOVD, C_NSAUTO, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + {AMOVD, C_ZOREG, C_NONE, C_REG, 21, 4, 0, 0, 0}, + {AMOVD, C_UOREG32K, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + {AMOVD, C_NSOREG, C_NONE, C_REG, 21, 4, REGSP, 0, 0}, + + /* long displacement store */ + {AMOVB, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, 0, 0}, + {AMOVB, C_REG, C_NONE, C_LOREG, 30, 8, 0, 0, 0}, + {AMOVBU, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, 0, 0}, + {AMOVBU, C_REG, C_NONE, C_LOREG, 30, 8, 0, 0, 0}, + {AMOVH, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, 0, 0}, + {AMOVH, C_REG, C_NONE, C_LOREG, 30, 8, 0, 0, 0}, + {AMOVW, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, 0, 0}, + {AMOVW, C_REG, C_NONE, C_LOREG, 30, 8, 0, 0, 0}, + {AMOVD, C_REG, C_NONE, C_LAUTO, 30, 8, REGSP, 0, 0}, + {AMOVD, C_REG, C_NONE, C_LOREG, 30, 8, 0, 0, 0}, + + /* long displacement load */ + {AMOVB, C_LAUTO, C_NONE, C_REG, 31, 8, REGSP, 0, 0}, + {AMOVB, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0}, + {AMOVB, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0}, + {AMOVBU, C_LAUTO, C_NONE, C_REG, 31, 8, REGSP, 0, 0}, + {AMOVBU, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0}, + {AMOVBU, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0}, + {AMOVH, C_LAUTO, C_NONE, C_REG, 31, 8, REGSP, 0, 0}, + {AMOVH, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0}, + {AMOVH, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0}, + {AMOVW, C_LAUTO, C_NONE, C_REG, 31, 8, REGSP, 0, 0}, + {AMOVW, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0}, + {AMOVW, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0}, + {AMOVD, C_LAUTO, C_NONE, C_REG, 31, 8, REGSP, 0, 0}, + {AMOVD, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0}, + {AMOVD, C_LOREG, C_NONE, C_REG, 31, 8, 0, 0, 0}, + + /* load long effective stack address (load int32 offset and add) */ + {AMOVD, C_LACON, C_NONE, C_REG, 34, 8, REGSP, LFROM, 0}, + + /* pre/post-indexed load (unscaled, signed 9-bit offset) */ + {AMOVD, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPOST}, + {AMOVW, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPOST}, + {AMOVH, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPOST}, + {AMOVB, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPOST}, + {AMOVBU, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPOST}, + {AFMOVS, C_LOREG, C_NONE, C_FREG, 22, 4, 0, 0, C_XPOST}, + {AFMOVD, C_LOREG, C_NONE, C_FREG, 22, 4, 0, 0, C_XPOST}, + {AMOVD, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPRE}, + {AMOVW, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPRE}, + {AMOVH, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPRE}, + {AMOVB, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPRE}, + {AMOVBU, C_LOREG, C_NONE, C_REG, 22, 4, 0, 0, C_XPRE}, + {AFMOVS, C_LOREG, C_NONE, C_FREG, 22, 4, 0, 0, C_XPRE}, + {AFMOVD, C_LOREG, C_NONE, C_FREG, 22, 4, 0, 0, C_XPRE}, + + /* pre/post-indexed store (unscaled, signed 9-bit offset) */ + {AMOVD, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPOST}, + {AMOVW, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPOST}, + {AMOVH, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPOST}, + {AMOVB, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPOST}, + {AMOVBU, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPOST}, + {AFMOVS, C_FREG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPOST}, + {AFMOVD, C_FREG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPOST}, + {AMOVD, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPRE}, + {AMOVW, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPRE}, + {AMOVH, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPRE}, + {AMOVB, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPRE}, + {AMOVBU, C_REG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPRE}, + {AFMOVS, C_FREG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPRE}, + {AFMOVD, C_FREG, C_NONE, C_LOREG, 23, 4, 0, 0, C_XPRE}, + + /* pre/post-indexed load/store register pair + (unscaled, signed 10-bit quad-aligned offset) */ + {ALDP, C_LOREG, C_NONE, C_PAIR, 66, 4, 0, 0, C_XPRE}, + {ALDP, C_LOREG, C_NONE, C_PAIR, 66, 4, 0, 0, C_XPOST}, + {ASTP, C_PAIR, C_NONE, C_LOREG, 67, 4, 0, 0, C_XPRE}, + {ASTP, C_PAIR, C_NONE, C_LOREG, 67, 4, 0, 0, C_XPOST}, + + /* special */ + {AMOVD, C_SPR, C_NONE, C_REG, 35, 4, 0, 0, 0}, + {AMRS, C_SPR, C_NONE, C_REG, 35, 4, 0, 0, 0}, + {AMOVD, C_REG, C_NONE, C_SPR, 36, 4, 0, 0, 0}, + {AMSR, C_REG, C_NONE, C_SPR, 36, 4, 0, 0, 0}, + {AMOVD, C_VCON, C_NONE, C_SPR, 37, 4, 0, 0, 0}, + {AMSR, C_VCON, C_NONE, C_SPR, 37, 4, 0, 0, 0}, + {AERET, C_NONE, C_NONE, C_NONE, 41, 4, 0, 0, 0}, + {AFMOVS, C_FREG, C_NONE, C_UAUTO16K, 20, 4, REGSP, 0, 0}, + {AFMOVS, C_FREG, C_NONE, C_NSAUTO, 20, 4, REGSP, 0, 0}, + {AFMOVS, C_FREG, C_NONE, C_ZOREG, 20, 4, 0, 0, 0}, + {AFMOVS, C_FREG, C_NONE, C_UOREG16K, 20, 4, 0, 0, 0}, + {AFMOVS, C_FREG, C_NONE, C_NSOREG, 20, 4, 0, 0, 0}, + {AFMOVD, C_FREG, C_NONE, C_UAUTO32K, 20, 4, REGSP, 0, 0}, + {AFMOVD, C_FREG, C_NONE, C_NSAUTO, 20, 4, REGSP, 0, 0}, + {AFMOVD, C_FREG, C_NONE, C_ZOREG, 20, 4, 0, 0, 0}, + {AFMOVD, C_FREG, C_NONE, C_UOREG32K, 20, 4, 0, 0, 0}, + {AFMOVD, C_FREG, C_NONE, C_NSOREG, 20, 4, 0, 0, 0}, + {AFMOVS, C_UAUTO16K, C_NONE, C_FREG, 21, 4, REGSP, 0, 0}, + {AFMOVS, C_NSAUTO, C_NONE, C_FREG, 21, 4, REGSP, 0, 0}, + {AFMOVS, C_ZOREG, C_NONE, C_FREG, 21, 4, 0, 0, 0}, + {AFMOVS, C_UOREG16K, C_NONE, C_FREG, 21, 4, 0, 0, 0}, + {AFMOVS, C_NSOREG, C_NONE, C_FREG, 21, 4, 0, 0, 0}, + {AFMOVD, C_UAUTO32K, C_NONE, C_FREG, 21, 4, REGSP, 0, 0}, + {AFMOVD, C_NSAUTO, C_NONE, C_FREG, 21, 4, REGSP, 0, 0}, + {AFMOVD, C_ZOREG, C_NONE, C_FREG, 21, 4, 0, 0, 0}, + {AFMOVD, C_UOREG32K, C_NONE, C_FREG, 21, 4, 0, 0, 0}, + {AFMOVD, C_NSOREG, C_NONE, C_FREG, 21, 4, 0, 0, 0}, + {AFMOVS, C_FREG, C_NONE, C_LAUTO, 30, 8, REGSP, LTO, 0}, + {AFMOVS, C_FREG, C_NONE, C_LOREG, 30, 8, 0, LTO, 0}, + {AFMOVD, C_FREG, C_NONE, C_LAUTO, 30, 8, REGSP, LTO, 0}, + {AFMOVD, C_FREG, C_NONE, C_LOREG, 30, 8, 0, LTO, 0}, + {AFMOVS, C_LAUTO, C_NONE, C_FREG, 31, 8, REGSP, LFROM, 0}, + {AFMOVS, C_LOREG, C_NONE, C_FREG, 31, 8, 0, LFROM, 0}, + {AFMOVD, C_LAUTO, C_NONE, C_FREG, 31, 8, REGSP, LFROM, 0}, + {AFMOVD, C_LOREG, C_NONE, C_FREG, 31, 8, 0, LFROM, 0}, + {AFMOVS, C_FREG, C_NONE, C_ADDR, 64, 12, 0, 0, 0}, + {AFMOVS, C_ADDR, C_NONE, C_FREG, 65, 12, 0, 0, 0}, + {AFMOVD, C_FREG, C_NONE, C_ADDR, 64, 12, 0, 0, 0}, + {AFMOVD, C_ADDR, C_NONE, C_FREG, 65, 12, 0, 0, 0}, + {AFADDS, C_FREG, C_NONE, C_FREG, 54, 4, 0, 0, 0}, + {AFADDS, C_FREG, C_FREG, C_FREG, 54, 4, 0, 0, 0}, + {AFADDS, C_FCON, C_NONE, C_FREG, 54, 4, 0, 0, 0}, + {AFADDS, C_FCON, C_FREG, C_FREG, 54, 4, 0, 0, 0}, + {AFMOVS, C_FCON, C_NONE, C_FREG, 54, 4, 0, 0, 0}, + {AFMOVS, C_FREG, C_NONE, C_FREG, 54, 4, 0, 0, 0}, + {AFMOVD, C_FCON, C_NONE, C_FREG, 54, 4, 0, 0, 0}, + {AFMOVD, C_FREG, C_NONE, C_FREG, 54, 4, 0, 0, 0}, + {AFCVTZSD, C_FREG, C_NONE, C_REG, 29, 4, 0, 0, 0}, + {ASCVTFD, C_REG, C_NONE, C_FREG, 29, 4, 0, 0, 0}, + {AFMOVS, C_REG, C_NONE, C_FREG, 29, 4, 0, 0, 0}, + {AFMOVS, C_FREG, C_NONE, C_REG, 29, 4, 0, 0, 0}, + {AFMOVD, C_REG, C_NONE, C_FREG, 29, 4, 0, 0, 0}, + {AFMOVD, C_FREG, C_NONE, C_REG, 29, 4, 0, 0, 0}, + {AFCMPS, C_FREG, C_FREG, C_NONE, 56, 4, 0, 0, 0}, + {AFCMPS, C_FCON, C_FREG, C_NONE, 56, 4, 0, 0, 0}, + {AFCCMPS, C_COND, C_REG, C_VCON, 57, 4, 0, 0, 0}, + {AFCSELD, C_COND, C_REG, C_FREG, 18, 4, 0, 0, 0}, + {AFCVTSD, C_FREG, C_NONE, C_FREG, 29, 4, 0, 0, 0}, + {ACLREX, C_NONE, C_NONE, C_VCON, 38, 4, 0, 0, 0}, + {ACLREX, C_NONE, C_NONE, C_NONE, 38, 4, 0, 0, 0}, + {ACBZ, C_REG, C_NONE, C_SBRA, 39, 4, 0, 0, 0}, + {ATBZ, C_VCON, C_REG, C_SBRA, 40, 4, 0, 0, 0}, + {ASYS, C_VCON, C_NONE, C_NONE, 50, 4, 0, 0, 0}, + {ASYS, C_VCON, C_REG, C_NONE, 50, 4, 0, 0, 0}, + {ASYSL, C_VCON, C_NONE, C_REG, 50, 4, 0, 0, 0}, + {ADMB, C_VCON, C_NONE, C_NONE, 51, 4, 0, 0, 0}, + {AHINT, C_VCON, C_NONE, C_NONE, 52, 4, 0, 0, 0}, + {ALDAR, C_ZOREG, C_NONE, C_REG, 58, 4, 0, 0, 0}, + {ALDXR, C_ZOREG, C_NONE, C_REG, 58, 4, 0, 0, 0}, + {ALDAXR, C_ZOREG, C_NONE, C_REG, 58, 4, 0, 0, 0}, + {ALDXP, C_ZOREG, C_REG, C_REG, 58, 4, 0, 0, 0}, + {ASTLR, C_REG, C_NONE, C_ZOREG, 59, 4, 0, 0, 0}, // to3=C_NONE + {ASTXR, C_REG, C_NONE, C_ZOREG, 59, 4, 0, 0, 0}, // to3=C_REG + {ASTLXR, C_REG, C_NONE, C_ZOREG, 59, 4, 0, 0, 0}, // to3=C_REG + + // { ASTXP, C_REG, C_NONE, C_ZOREG, 59, 4, 0 , 0}, // TODO(aram): + + {AAESD, C_VREG, C_NONE, C_VREG, 29, 4, 0, 0, 0}, + {ASHA1C, C_VREG, C_REG, C_VREG, 1, 4, 0, 0, 0}, + + {obj.AUNDEF, C_NONE, C_NONE, C_NONE, 90, 4, 0, 0, 0}, + {obj.AUSEFIELD, C_ADDR, C_NONE, C_NONE, 0, 0, 0, 0, 0}, + {obj.APCDATA, C_VCON, C_NONE, C_VCON, 0, 0, 0, 0, 0}, + {obj.AFUNCDATA, C_VCON, C_NONE, C_ADDR, 0, 0, 0, 0, 0}, + {obj.ANOP, C_NONE, C_NONE, C_NONE, 0, 0, 0, 0, 0}, + {obj.ADUFFZERO, C_NONE, C_NONE, C_SBRA, 5, 4, 0, 0, 0}, // same as AB/ABL + {obj.ADUFFCOPY, C_NONE, C_NONE, C_SBRA, 5, 4, 0, 0, 0}, // same as AB/ABL + + {obj.AXXX, C_NONE, C_NONE, C_NONE, 0, 4, 0, 0, 0}, +} + +/* + * valid pstate field values, and value to use in instruction + */ +var pstatefield = []struct { + a uint32 + b uint32 +}{ + {REG_SPSel, 0<<16 | 4<<12 | 5<<5}, + {REG_DAIFSet, 3<<16 | 4<<12 | 6<<5}, + {REG_DAIFClr, 3<<16 | 4<<12 | 7<<5}, +} + +var pool struct { + start uint32 + size uint32 +} + +func prasm(p *obj.Prog) { + fmt.Printf("%v\n", p) +} + +func span7(ctxt *obj.Link, cursym *obj.LSym) { + p := cursym.Text + if p == nil || p.Link == nil { // handle external functions and ELF section symbols + return + } + ctxt.Cursym = cursym + ctxt.Autosize = int32(p.To.Offset&0xffffffff) + 8 + + if oprange[AAND&obj.AMask] == nil { + buildop(ctxt) + } + + bflag := 1 + c := int64(0) + p.Pc = c + var m int + var o *Optab + for p = p.Link; p != nil; p = p.Link { + ctxt.Curp = p + if p.As == ADWORD && (c&7) != 0 { + c += 4 + } + p.Pc = c + o = oplook(ctxt, p) + m = int(o.size) + if m == 0 { + if p.As != obj.ANOP && p.As != obj.AFUNCDATA && p.As != obj.APCDATA && p.As != obj.AUSEFIELD { + ctxt.Diag("zero-width instruction\n%v", p) + } + continue + } + + switch o.flag & (LFROM | LTO) { + case LFROM: + addpool(ctxt, p, &p.From) + + case LTO: + addpool(ctxt, p, &p.To) + break + } + + if p.As == AB || p.As == obj.ARET || p.As == AERET { /* TODO: other unconditional operations */ + checkpool(ctxt, p, 0) + } + c += int64(m) + if ctxt.Blitrl != nil { + checkpool(ctxt, p, 1) + } + } + + cursym.Size = c + + /* + * if any procedure is large enough to + * generate a large SBRA branch, then + * generate extra passes putting branches + * around jmps to fix. this is rare. + */ + for bflag != 0 { + if ctxt.Debugvlog != 0 { + ctxt.Logf("%5.2f span1\n", obj.Cputime()) + } + bflag = 0 + c = 0 + for p = cursym.Text.Link; p != nil; p = p.Link { + if p.As == ADWORD && (c&7) != 0 { + c += 4 + } + p.Pc = c + o = oplook(ctxt, p) + + /* very large branches */ + if o.type_ == 7 && p.Pcond != nil { + otxt := p.Pcond.Pc - c + if otxt <= -(1<<18)+10 || otxt >= (1<<18)-10 { + q := ctxt.NewProg() + q.Link = p.Link + p.Link = q + q.As = AB + q.To.Type = obj.TYPE_BRANCH + q.Pcond = p.Pcond + p.Pcond = q + q = ctxt.NewProg() + q.Link = p.Link + p.Link = q + q.As = AB + q.To.Type = obj.TYPE_BRANCH + q.Pcond = q.Link.Link + bflag = 1 + } + } + m = int(o.size) + + if m == 0 { + if p.As != obj.ANOP && p.As != obj.AFUNCDATA && p.As != obj.APCDATA && p.As != obj.AUSEFIELD { + ctxt.Diag("zero-width instruction\n%v", p) + } + continue + } + + c += int64(m) + } + } + + c += -c & (funcAlign - 1) + cursym.Size = c + + /* + * lay out the code, emitting code and data relocations. + */ + cursym.Grow(cursym.Size) + bp := cursym.P + psz := int32(0) + var i int + var out [6]uint32 + for p := cursym.Text.Link; p != nil; p = p.Link { + ctxt.Pc = p.Pc + ctxt.Curp = p + o = oplook(ctxt, p) + + // need to align DWORDs on 8-byte boundary. The ISA doesn't + // require it, but the various 64-bit loads we generate assume it. + if o.as == ADWORD && psz%8 != 0 { + bp[3] = 0 + bp[2] = bp[3] + bp[1] = bp[2] + bp[0] = bp[1] + bp = bp[4:] + psz += 4 + } + + if int(o.size) > 4*len(out) { + log.Fatalf("out array in span7 is too small, need at least %d for %v", o.size/4, p) + } + asmout(ctxt, p, o, out[:]) + for i = 0; i < int(o.size/4); i++ { + ctxt.Arch.ByteOrder.PutUint32(bp, out[i]) + bp = bp[4:] + psz += 4 + } + } +} + +/* + * when the first reference to the literal pool threatens + * to go out of range of a 1Mb PC-relative offset + * drop the pool now, and branch round it. + */ +func checkpool(ctxt *obj.Link, p *obj.Prog, skip int) { + if pool.size >= 0xffff0 || !ispcdisp(int32(p.Pc+4+int64(pool.size)-int64(pool.start)+8)) { + flushpool(ctxt, p, skip) + } else if p.Link == nil { + flushpool(ctxt, p, 2) + } +} + +func flushpool(ctxt *obj.Link, p *obj.Prog, skip int) { + if ctxt.Blitrl != nil { + if skip != 0 { + if ctxt.Debugvlog != 0 && skip == 1 { + fmt.Printf("note: flush literal pool at %#x: len=%d ref=%x\n", uint64(p.Pc+4), pool.size, pool.start) + } + q := ctxt.NewProg() + q.As = AB + q.To.Type = obj.TYPE_BRANCH + q.Pcond = p.Link + q.Link = ctxt.Blitrl + q.Lineno = p.Lineno + ctxt.Blitrl = q + } else if p.Pc+int64(pool.size)-int64(pool.start) < maxPCDisp { + return + } + + // The line number for constant pool entries doesn't really matter. + // We set it to the line number of the preceding instruction so that + // there are no deltas to encode in the pc-line tables. + for q := ctxt.Blitrl; q != nil; q = q.Link { + q.Lineno = p.Lineno + } + + ctxt.Elitrl.Link = p.Link + p.Link = ctxt.Blitrl + + ctxt.Blitrl = nil /* BUG: should refer back to values until out-of-range */ + ctxt.Elitrl = nil + pool.size = 0 + pool.start = 0 + } +} + +/* + * TODO: hash + */ +func addpool(ctxt *obj.Link, p *obj.Prog, a *obj.Addr) { + c := aclass(ctxt, a) + lit := ctxt.Instoffset + t := *ctxt.NewProg() + t.As = AWORD + sz := 4 + + // MOVD foo(SB), R is actually + // MOVD addr, REGTMP + // MOVD REGTMP, R + // where addr is the address of the DWORD containing the address of foo. + if p.As == AMOVD || c == C_ADDR || c == C_VCON || int64(lit) != int64(int32(lit)) || uint64(lit) != uint64(uint32(lit)) { + // conservative: don't know if we want signed or unsigned extension. + // in case of ambiguity, store 64-bit + t.As = ADWORD + sz = 8 + } + + switch c { + // TODO(aram): remove. + default: + if a.Name != obj.NAME_EXTERN { + fmt.Printf("addpool: %v in %v shouldn't go to default case\n", DRconv(c), p) + } + + t.To.Offset = a.Offset + t.To.Sym = a.Sym + t.To.Type = a.Type + t.To.Name = a.Name + + /* This is here because MOV uint12<<12, R is disabled in optab. + Because of this, we need to load the constant from memory. */ + case C_ADDCON: + fallthrough + + case C_PSAUTO, + C_PPAUTO, + C_UAUTO4K, + C_UAUTO8K, + C_UAUTO16K, + C_UAUTO32K, + C_UAUTO64K, + C_NSAUTO, + C_NPAUTO, + C_LAUTO, + C_PPOREG, + C_PSOREG, + C_UOREG4K, + C_UOREG8K, + C_UOREG16K, + C_UOREG32K, + C_UOREG64K, + C_NSOREG, + C_NPOREG, + C_LOREG, + C_LACON, + C_LCON, + C_VCON: + if a.Name == obj.NAME_EXTERN { + fmt.Printf("addpool: %v in %v needs reloc\n", DRconv(c), p) + } + + t.To.Type = obj.TYPE_CONST + t.To.Offset = lit + break + } + + for q := ctxt.Blitrl; q != nil; q = q.Link { /* could hash on t.t0.offset */ + if q.To == t.To { + p.Pcond = q + return + } + } + + q := ctxt.NewProg() + *q = t + q.Pc = int64(pool.size) + if ctxt.Blitrl == nil { + ctxt.Blitrl = q + pool.start = uint32(p.Pc) + } else { + ctxt.Elitrl.Link = q + } + ctxt.Elitrl = q + pool.size = -pool.size & (funcAlign - 1) + pool.size += uint32(sz) + p.Pcond = q +} + +func regoff(ctxt *obj.Link, a *obj.Addr) uint32 { + ctxt.Instoffset = 0 + aclass(ctxt, a) + return uint32(ctxt.Instoffset) +} + +// Maximum PC-relative displacement. +// The actual limit is ±2²⁰, but we are conservative +// to avoid needing to recompute the literal pool flush points +// as span-dependent jumps are enlarged. +const maxPCDisp = 512 * 1024 + +// ispcdisp reports whether v is a valid PC-relative displacement. +func ispcdisp(v int32) bool { + return -maxPCDisp < v && v < maxPCDisp && v&3 == 0 +} + +func isaddcon(v int64) bool { + /* uimm12 or uimm24? */ + if v < 0 { + return false + } + if (v & 0xFFF) == 0 { + v >>= 12 + } + return v <= 0xFFF +} + +// isbitcon returns whether a constant can be encoded into a logical instruction. +// bitcon has a binary form of repetition of a bit sequence of length 2, 4, 8, 16, 32, or 64, +// which itself is a rotate (w.r.t. the length of the unit) of a sequence of ones. +// special cases: 0 and -1 are not bitcon. +// this function needs to run against virtually all the constants, so it needs to be fast. +// for this reason, bitcon testing and bitcon encoding are separate functions. +func isbitcon(x uint64) bool { + if x == 1<<64-1 || x == 0 { + return false + } + // determine the period and sign-extend a unit to 64 bits + switch { + case x != x>>32|x<<32: + // period is 64 + // nothing to do + case x != x>>16|x<<48: + // period is 32 + x = uint64(int64(int32(x))) + case x != x>>8|x<<56: + // period is 16 + x = uint64(int64(int16(x))) + case x != x>>4|x<<60: + // period is 8 + x = uint64(int64(int8(x))) + default: + // period is 4 or 2, always true + // 0001, 0010, 0100, 1000 -- 0001 rotate + // 0011, 0110, 1100, 1001 -- 0011 rotate + // 0111, 1011, 1101, 1110 -- 0111 rotate + // 0101, 1010 -- 01 rotate, repeat + return true + } + return sequenceOfOnes(x) || sequenceOfOnes(^x) +} + +// sequenceOfOnes tests whether a constant is a sequence of ones in binary, with leading and trailing zeros +func sequenceOfOnes(x uint64) bool { + y := x & -x // lowest set bit of x. x is good iff x+y is a power of 2 + y += x + return (y-1)&y == 0 +} + +// bitconEncode returns the encoding of a bitcon used in logical instructions +// x is known to be a bitcon +// a bitcon is a sequence of n ones at low bits (i.e. 1<<n-1), right rotated +// by R bits, and repeated with period of 64, 32, 16, 8, 4, or 2. +// it is encoded in logical instructions with 3 bitfields +// N (1 bit) : R (6 bits) : S (6 bits), where +// N=1 -- period=64 +// N=0, S=0xxxxx -- period=32 +// N=0, S=10xxxx -- period=16 +// N=0, S=110xxx -- period=8 +// N=0, S=1110xx -- period=4 +// N=0, S=11110x -- period=2 +// R is the shift amount, low bits of S = n-1 +func bitconEncode(x uint64, mode int) uint32 { + var period uint32 + // determine the period and sign-extend a unit to 64 bits + switch { + case x != x>>32|x<<32: + period = 64 + case x != x>>16|x<<48: + period = 32 + x = uint64(int64(int32(x))) + case x != x>>8|x<<56: + period = 16 + x = uint64(int64(int16(x))) + case x != x>>4|x<<60: + period = 8 + x = uint64(int64(int8(x))) + case x != x>>2|x<<62: + period = 4 + x = uint64(int64(x<<60) >> 60) + default: + period = 2 + x = uint64(int64(x<<62) >> 62) + } + neg := false + if int64(x) < 0 { + x = ^x + neg = true + } + y := x & -x // lowest set bit of x. + s := log2(y) + n := log2(x+y) - s // x (or ^x) is a sequence of n ones left shifted by s bits + if neg { + // ^x is a sequence of n ones left shifted by s bits + // adjust n, s for x + s = n + s + n = period - n + } + + N := uint32(0) + if mode == 64 && period == 64 { + N = 1 + } + R := (period - s) & (period - 1) & uint32(mode-1) // shift amount of right rotate + S := (n - 1) | 63&^(period<<1-1) // low bits = #ones - 1, high bits encodes period + return N<<22 | R<<16 | S<<10 +} + +func log2(x uint64) uint32 { + if x == 0 { + panic("log2 of 0") + } + n := uint32(0) + if x >= 1<<32 { + x >>= 32 + n += 32 + } + if x >= 1<<16 { + x >>= 16 + n += 16 + } + if x >= 1<<8 { + x >>= 8 + n += 8 + } + if x >= 1<<4 { + x >>= 4 + n += 4 + } + if x >= 1<<2 { + x >>= 2 + n += 2 + } + if x >= 1<<1 { + x >>= 1 + n += 1 + } + return n +} + +func autoclass(l int64) int { + if l < 0 { + if l >= -256 { + return C_NSAUTO + } + if l >= -512 && (l&7) == 0 { + return C_NPAUTO + } + return C_LAUTO + } + + if l <= 255 { + return C_PSAUTO + } + if l <= 504 && (l&7) == 0 { + return C_PPAUTO + } + if l <= 4095 { + return C_UAUTO4K + } + if l <= 8190 && (l&1) == 0 { + return C_UAUTO8K + } + if l <= 16380 && (l&3) == 0 { + return C_UAUTO16K + } + if l <= 32760 && (l&7) == 0 { + return C_UAUTO32K + } + if l <= 65520 && (l&0xF) == 0 { + return C_UAUTO64K + } + return C_LAUTO +} + +func oregclass(l int64) int { + if l == 0 { + return C_ZOREG + } + return autoclass(l) - C_NPAUTO + C_NPOREG +} + +/* + * given an offset v and a class c (see above) + * return the offset value to use in the instruction, + * scaled if necessary + */ +func offsetshift(ctxt *obj.Link, v int64, c int) int64 { + s := 0 + if c >= C_SEXT1 && c <= C_SEXT16 { + s = c - C_SEXT1 + } else if c >= C_UAUTO4K && c <= C_UAUTO64K { + s = c - C_UAUTO4K + } else if c >= C_UOREG4K && c <= C_UOREG64K { + s = c - C_UOREG4K + } + vs := v >> uint(s) + if vs<<uint(s) != v { + ctxt.Diag("odd offset: %d\n%v", v, ctxt.Curp) + } + return vs +} + +/* + * if v contains a single 16-bit value aligned + * on a 16-bit field, and thus suitable for movk/movn, + * return the field index 0 to 3; otherwise return -1 + */ +func movcon(v int64) int { + for s := 0; s < 64; s += 16 { + if (uint64(v) &^ (uint64(0xFFFF) << uint(s))) == 0 { + return s / 16 + } + } + return -1 +} + +func rclass(r int16) int { + switch { + case REG_R0 <= r && r <= REG_R30: // not 31 + return C_REG + case r == REGZERO: + return C_ZCON + case REG_F0 <= r && r <= REG_F31: + return C_FREG + case REG_V0 <= r && r <= REG_V31: + return C_VREG + case COND_EQ <= r && r <= COND_NV: + return C_COND + case r == REGSP: + return C_RSP + case r®_EXT != 0: + return C_EXTREG + case r >= REG_SPECIAL: + return C_SPR + } + return C_GOK +} + +func aclass(ctxt *obj.Link, a *obj.Addr) int { + switch a.Type { + case obj.TYPE_NONE: + return C_NONE + + case obj.TYPE_REG: + return rclass(a.Reg) + + case obj.TYPE_REGREG: + return C_PAIR + + case obj.TYPE_SHIFT: + return C_SHIFT + + case obj.TYPE_MEM: + switch a.Name { + case obj.NAME_EXTERN, obj.NAME_STATIC: + if a.Sym == nil { + break + } + ctxt.Instoffset = a.Offset + if a.Sym != nil { // use relocation + if a.Sym.Type == obj.STLSBSS { + if ctxt.Flag_shared { + return C_TLS_IE + } else { + return C_TLS_LE + } + } + return C_ADDR + } + return C_LEXT + + case obj.NAME_GOTREF: + return C_GOTADDR + + case obj.NAME_AUTO: + ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + return autoclass(ctxt.Instoffset) + + case obj.NAME_PARAM: + ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + 8 + return autoclass(ctxt.Instoffset) + + case obj.NAME_NONE: + ctxt.Instoffset = a.Offset + return oregclass(ctxt.Instoffset) + } + return C_GOK + + case obj.TYPE_FCONST: + return C_FCON + + case obj.TYPE_TEXTSIZE: + return C_TEXTSIZE + + case obj.TYPE_CONST, obj.TYPE_ADDR: + switch a.Name { + case obj.NAME_NONE: + ctxt.Instoffset = a.Offset + if a.Reg != 0 && a.Reg != REGZERO { + goto aconsize + } + v := ctxt.Instoffset + if v == 0 { + return C_ZCON + } + if isaddcon(v) { + if v <= 0xFFF { + if isbitcon(uint64(v)) { + return C_ABCON0 + } + return C_ADDCON0 + } + if isbitcon(uint64(v)) { + return C_ABCON + } + return C_ADDCON + } + + t := movcon(v) + if t >= 0 { + if isbitcon(uint64(v)) { + return C_MBCON + } + return C_MOVCON + } + + t = movcon(^v) + if t >= 0 { + if isbitcon(uint64(v)) { + return C_MBCON + } + return C_MOVCON + } + + if isbitcon(uint64(v)) { + return C_BITCON + } + + if uint64(v) == uint64(uint32(v)) || v == int64(int32(v)) { + return C_LCON + } + return C_VCON + + case obj.NAME_EXTERN, obj.NAME_STATIC: + if a.Sym == nil { + break + } + if a.Sym.Type == obj.STLSBSS { + ctxt.Diag("taking address of TLS variable is not supported") + } + ctxt.Instoffset = a.Offset + return C_VCONADDR + + case obj.NAME_AUTO: + ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + goto aconsize + + case obj.NAME_PARAM: + ctxt.Instoffset = int64(ctxt.Autosize) + a.Offset + 8 + goto aconsize + } + return C_GOK + + aconsize: + if isaddcon(ctxt.Instoffset) { + return C_AACON + } + return C_LACON + + case obj.TYPE_BRANCH: + return C_SBRA + } + + return C_GOK +} + +func oclass(a *obj.Addr) int { + return int(a.Class) - 1 +} + +func oplook(ctxt *obj.Link, p *obj.Prog) *Optab { + a1 := int(p.Optab) + if a1 != 0 { + return &optab[a1-1] + } + a1 = int(p.From.Class) + if a1 == 0 { + a1 = aclass(ctxt, &p.From) + 1 + p.From.Class = int8(a1) + } + + a1-- + a3 := int(p.To.Class) + if a3 == 0 { + a3 = aclass(ctxt, &p.To) + 1 + p.To.Class = int8(a3) + } + + a3-- + a2 := C_NONE + if p.Reg != 0 { + a2 = rclass(p.Reg) + } + + if false { + fmt.Printf("oplook %v %d %d %d\n", p.As, a1, a2, a3) + fmt.Printf("\t\t%d %d\n", p.From.Type, p.To.Type) + } + + ops := oprange[p.As&obj.AMask] + c1 := &xcmp[a1] + c2 := &xcmp[a2] + c3 := &xcmp[a3] + c4 := &xcmp[p.Scond>>5] + for i := range ops { + op := &ops[i] + if (int(op.a2) == a2 || c2[op.a2]) && c4[op.scond>>5] && c1[op.a1] && c3[op.a3] { + p.Optab = uint16(cap(optab) - cap(ops) + i + 1) + return op + } + } + + ctxt.Diag("illegal combination %v %v %v %v, %d %d", p, DRconv(a1), DRconv(a2), DRconv(a3), p.From.Type, p.To.Type) + prasm(p) + if ops == nil { + ops = optab + } + return &ops[0] +} + +func cmp(a int, b int) bool { + if a == b { + return true + } + switch a { + case C_RSP: + if b == C_REG { + return true + } + + case C_REG: + if b == C_ZCON { + return true + } + + case C_ADDCON0: + if b == C_ZCON || b == C_ABCON0 { + return true + } + + case C_ADDCON: + if b == C_ZCON || b == C_ABCON0 || b == C_ADDCON0 || b == C_ABCON { + return true + } + + case C_BITCON: + if b == C_ABCON0 || b == C_ABCON || b == C_MBCON { + return true + } + + case C_MOVCON: + if b == C_MBCON || b == C_ZCON || b == C_ADDCON0 { + return true + } + + case C_LCON: + if b == C_ZCON || b == C_BITCON || b == C_ADDCON || b == C_ADDCON0 || b == C_ABCON || b == C_ABCON0 || b == C_MBCON || b == C_MOVCON { + return true + } + + case C_VCON: + return cmp(C_LCON, b) + + case C_LACON: + if b == C_AACON { + return true + } + + case C_SEXT2: + if b == C_SEXT1 { + return true + } + + case C_SEXT4: + if b == C_SEXT1 || b == C_SEXT2 { + return true + } + + case C_SEXT8: + if b >= C_SEXT1 && b <= C_SEXT4 { + return true + } + + case C_SEXT16: + if b >= C_SEXT1 && b <= C_SEXT8 { + return true + } + + case C_LEXT: + if b >= C_SEXT1 && b <= C_SEXT16 { + return true + } + + case C_PPAUTO: + if b == C_PSAUTO { + return true + } + + case C_UAUTO4K: + if b == C_PSAUTO || b == C_PPAUTO { + return true + } + + case C_UAUTO8K: + return cmp(C_UAUTO4K, b) + + case C_UAUTO16K: + return cmp(C_UAUTO8K, b) + + case C_UAUTO32K: + return cmp(C_UAUTO16K, b) + + case C_UAUTO64K: + return cmp(C_UAUTO32K, b) + + case C_NPAUTO: + return cmp(C_NSAUTO, b) + + case C_LAUTO: + return cmp(C_NPAUTO, b) || cmp(C_UAUTO64K, b) + + case C_PSOREG: + if b == C_ZOREG { + return true + } + + case C_PPOREG: + if b == C_ZOREG || b == C_PSOREG { + return true + } + + case C_UOREG4K: + if b == C_ZOREG || b == C_PSAUTO || b == C_PSOREG || b == C_PPAUTO || b == C_PPOREG { + return true + } + + case C_UOREG8K: + return cmp(C_UOREG4K, b) + + case C_UOREG16K: + return cmp(C_UOREG8K, b) + + case C_UOREG32K: + return cmp(C_UOREG16K, b) + + case C_UOREG64K: + return cmp(C_UOREG32K, b) + + case C_NPOREG: + return cmp(C_NSOREG, b) + + case C_LOREG: + return cmp(C_NPOREG, b) || cmp(C_UOREG64K, b) + + case C_LBRA: + if b == C_SBRA { + return true + } + } + + return false +} + +type ocmp []Optab + +func (x ocmp) Len() int { + return len(x) +} + +func (x ocmp) Swap(i, j int) { + x[i], x[j] = x[j], x[i] +} + +func (x ocmp) Less(i, j int) bool { + p1 := &x[i] + p2 := &x[j] + if p1.as != p2.as { + return p1.as < p2.as + } + if p1.a1 != p2.a1 { + return p1.a1 < p2.a1 + } + if p1.a2 != p2.a2 { + return p1.a2 < p2.a2 + } + if p1.a3 != p2.a3 { + return p1.a3 < p2.a3 + } + if p1.scond != p2.scond { + return p1.scond < p2.scond + } + return false +} + +func oprangeset(a obj.As, t []Optab) { + oprange[a&obj.AMask] = t +} + +func buildop(ctxt *obj.Link) { + var n int + for i := 0; i < C_GOK; i++ { + for n = 0; n < C_GOK; n++ { + if cmp(n, i) { + xcmp[i][n] = true + } + } + } + for n = 0; optab[n].as != obj.AXXX; n++ { + } + sort.Sort(ocmp(optab[:n])) + for i := 0; i < n; i++ { + r := optab[i].as + start := i + for optab[i].as == r { + i++ + } + t := optab[start:i] + i-- + oprangeset(r, t) + switch r { + default: + ctxt.Diag("unknown op in build: %v", r) + log.Fatalf("bad code") + + case AADD: + oprangeset(AADDS, t) + oprangeset(ASUB, t) + oprangeset(ASUBS, t) + oprangeset(AADDW, t) + oprangeset(AADDSW, t) + oprangeset(ASUBW, t) + oprangeset(ASUBSW, t) + + case AAND: /* logical immediate, logical shifted register */ + oprangeset(AANDS, t) + + oprangeset(AANDSW, t) + oprangeset(AANDW, t) + oprangeset(AEOR, t) + oprangeset(AEORW, t) + oprangeset(AORR, t) + oprangeset(AORRW, t) + + case ABIC: /* only logical shifted register */ + oprangeset(ABICS, t) + + oprangeset(ABICSW, t) + oprangeset(ABICW, t) + oprangeset(AEON, t) + oprangeset(AEONW, t) + oprangeset(AORN, t) + oprangeset(AORNW, t) + + case ANEG: + oprangeset(ANEGS, t) + oprangeset(ANEGSW, t) + oprangeset(ANEGW, t) + + case AADC: /* rn=Rd */ + oprangeset(AADCW, t) + + oprangeset(AADCS, t) + oprangeset(AADCSW, t) + oprangeset(ASBC, t) + oprangeset(ASBCW, t) + oprangeset(ASBCS, t) + oprangeset(ASBCSW, t) + + case ANGC: /* rn=REGZERO */ + oprangeset(ANGCW, t) + + oprangeset(ANGCS, t) + oprangeset(ANGCSW, t) + + case ACMP: + oprangeset(ACMPW, t) + oprangeset(ACMN, t) + oprangeset(ACMNW, t) + + case ATST: + oprangeset(ATSTW, t) + + /* register/register, and shifted */ + case AMVN: + oprangeset(AMVNW, t) + + case AMOVK: + oprangeset(AMOVKW, t) + oprangeset(AMOVN, t) + oprangeset(AMOVNW, t) + oprangeset(AMOVZ, t) + oprangeset(AMOVZW, t) + + case ABEQ: + oprangeset(ABNE, t) + oprangeset(ABCS, t) + oprangeset(ABHS, t) + oprangeset(ABCC, t) + oprangeset(ABLO, t) + oprangeset(ABMI, t) + oprangeset(ABPL, t) + oprangeset(ABVS, t) + oprangeset(ABVC, t) + oprangeset(ABHI, t) + oprangeset(ABLS, t) + oprangeset(ABGE, t) + oprangeset(ABLT, t) + oprangeset(ABGT, t) + oprangeset(ABLE, t) + + case ALSL: + oprangeset(ALSLW, t) + oprangeset(ALSR, t) + oprangeset(ALSRW, t) + oprangeset(AASR, t) + oprangeset(AASRW, t) + oprangeset(AROR, t) + oprangeset(ARORW, t) + + case ACLS: + oprangeset(ACLSW, t) + oprangeset(ACLZ, t) + oprangeset(ACLZW, t) + oprangeset(ARBIT, t) + oprangeset(ARBITW, t) + oprangeset(AREV, t) + oprangeset(AREVW, t) + oprangeset(AREV16, t) + oprangeset(AREV16W, t) + oprangeset(AREV32, t) + + case ASDIV: + oprangeset(ASDIVW, t) + oprangeset(AUDIV, t) + oprangeset(AUDIVW, t) + oprangeset(ACRC32B, t) + oprangeset(ACRC32CB, t) + oprangeset(ACRC32CH, t) + oprangeset(ACRC32CW, t) + oprangeset(ACRC32CX, t) + oprangeset(ACRC32H, t) + oprangeset(ACRC32W, t) + oprangeset(ACRC32X, t) + + case AMADD: + oprangeset(AMADDW, t) + oprangeset(AMSUB, t) + oprangeset(AMSUBW, t) + oprangeset(ASMADDL, t) + oprangeset(ASMSUBL, t) + oprangeset(AUMADDL, t) + oprangeset(AUMSUBL, t) + + case AREM: + oprangeset(AREMW, t) + oprangeset(AUREM, t) + oprangeset(AUREMW, t) + + case AMUL: + oprangeset(AMULW, t) + oprangeset(AMNEG, t) + oprangeset(AMNEGW, t) + oprangeset(ASMNEGL, t) + oprangeset(ASMULL, t) + oprangeset(ASMULH, t) + oprangeset(AUMNEGL, t) + oprangeset(AUMULH, t) + oprangeset(AUMULL, t) + + case AMOVB: + oprangeset(AMOVBU, t) + + case AMOVH: + oprangeset(AMOVHU, t) + + case AMOVW: + oprangeset(AMOVWU, t) + + case ABFM: + oprangeset(ABFMW, t) + oprangeset(ASBFM, t) + oprangeset(ASBFMW, t) + oprangeset(AUBFM, t) + oprangeset(AUBFMW, t) + + case ABFI: + oprangeset(ABFIW, t) + oprangeset(ABFXIL, t) + oprangeset(ABFXILW, t) + oprangeset(ASBFIZ, t) + oprangeset(ASBFIZW, t) + oprangeset(ASBFX, t) + oprangeset(ASBFXW, t) + oprangeset(AUBFIZ, t) + oprangeset(AUBFIZW, t) + oprangeset(AUBFX, t) + oprangeset(AUBFXW, t) + + case AEXTR: + oprangeset(AEXTRW, t) + + case ASXTB: + oprangeset(ASXTBW, t) + oprangeset(ASXTH, t) + oprangeset(ASXTHW, t) + oprangeset(ASXTW, t) + oprangeset(AUXTB, t) + oprangeset(AUXTH, t) + oprangeset(AUXTW, t) + oprangeset(AUXTBW, t) + oprangeset(AUXTHW, t) + + case ACCMN: + oprangeset(ACCMNW, t) + oprangeset(ACCMP, t) + oprangeset(ACCMPW, t) + + case ACSEL: + oprangeset(ACSELW, t) + oprangeset(ACSINC, t) + oprangeset(ACSINCW, t) + oprangeset(ACSINV, t) + oprangeset(ACSINVW, t) + oprangeset(ACSNEG, t) + oprangeset(ACSNEGW, t) + + // aliases Rm=Rn, !cond + oprangeset(ACINC, t) + + oprangeset(ACINCW, t) + oprangeset(ACINV, t) + oprangeset(ACINVW, t) + oprangeset(ACNEG, t) + oprangeset(ACNEGW, t) + + // aliases, Rm=Rn=REGZERO, !cond + case ACSET: + oprangeset(ACSETW, t) + + oprangeset(ACSETM, t) + oprangeset(ACSETMW, t) + + case AMOVD, + AMOVBU, + AB, + ABL, + AWORD, + ADWORD, + obj.ARET, + obj.ATEXT, + ASTP, + ALDP: + break + + case AERET: + oprangeset(AWFE, t) + oprangeset(AWFI, t) + oprangeset(AYIELD, t) + oprangeset(ASEV, t) + oprangeset(ASEVL, t) + oprangeset(ADRPS, t) + + case ACBZ: + oprangeset(ACBZW, t) + oprangeset(ACBNZ, t) + oprangeset(ACBNZW, t) + + case ATBZ: + oprangeset(ATBNZ, t) + + case AADR, AADRP: + break + + case ACLREX: + break + + case ASVC: + oprangeset(AHLT, t) + oprangeset(AHVC, t) + oprangeset(ASMC, t) + oprangeset(ABRK, t) + oprangeset(ADCPS1, t) + oprangeset(ADCPS2, t) + oprangeset(ADCPS3, t) + + case AFADDS: + oprangeset(AFADDD, t) + oprangeset(AFSUBS, t) + oprangeset(AFSUBD, t) + oprangeset(AFMULS, t) + oprangeset(AFMULD, t) + oprangeset(AFNMULS, t) + oprangeset(AFNMULD, t) + oprangeset(AFDIVS, t) + oprangeset(AFMAXD, t) + oprangeset(AFMAXS, t) + oprangeset(AFMIND, t) + oprangeset(AFMINS, t) + oprangeset(AFMAXNMD, t) + oprangeset(AFMAXNMS, t) + oprangeset(AFMINNMD, t) + oprangeset(AFMINNMS, t) + oprangeset(AFDIVD, t) + + case AFCVTSD: + oprangeset(AFCVTDS, t) + oprangeset(AFABSD, t) + oprangeset(AFABSS, t) + oprangeset(AFNEGD, t) + oprangeset(AFNEGS, t) + oprangeset(AFSQRTD, t) + oprangeset(AFSQRTS, t) + oprangeset(AFRINTNS, t) + oprangeset(AFRINTND, t) + oprangeset(AFRINTPS, t) + oprangeset(AFRINTPD, t) + oprangeset(AFRINTMS, t) + oprangeset(AFRINTMD, t) + oprangeset(AFRINTZS, t) + oprangeset(AFRINTZD, t) + oprangeset(AFRINTAS, t) + oprangeset(AFRINTAD, t) + oprangeset(AFRINTXS, t) + oprangeset(AFRINTXD, t) + oprangeset(AFRINTIS, t) + oprangeset(AFRINTID, t) + oprangeset(AFCVTDH, t) + oprangeset(AFCVTHS, t) + oprangeset(AFCVTHD, t) + oprangeset(AFCVTSH, t) + + case AFCMPS: + oprangeset(AFCMPD, t) + oprangeset(AFCMPES, t) + oprangeset(AFCMPED, t) + + case AFCCMPS: + oprangeset(AFCCMPD, t) + oprangeset(AFCCMPES, t) + oprangeset(AFCCMPED, t) + + case AFCSELD: + oprangeset(AFCSELS, t) + + case AFMOVS, AFMOVD: + break + + case AFCVTZSD: + oprangeset(AFCVTZSDW, t) + oprangeset(AFCVTZSS, t) + oprangeset(AFCVTZSSW, t) + oprangeset(AFCVTZUD, t) + oprangeset(AFCVTZUDW, t) + oprangeset(AFCVTZUS, t) + oprangeset(AFCVTZUSW, t) + + case ASCVTFD: + oprangeset(ASCVTFS, t) + oprangeset(ASCVTFWD, t) + oprangeset(ASCVTFWS, t) + oprangeset(AUCVTFD, t) + oprangeset(AUCVTFS, t) + oprangeset(AUCVTFWD, t) + oprangeset(AUCVTFWS, t) + + case ASYS: + oprangeset(AAT, t) + oprangeset(ADC, t) + oprangeset(AIC, t) + oprangeset(ATLBI, t) + + case ASYSL, AHINT: + break + + case ADMB: + oprangeset(ADSB, t) + oprangeset(AISB, t) + + case AMRS, AMSR: + break + + case ALDAR: + oprangeset(ALDARW, t) + fallthrough + + case ALDXR: + oprangeset(ALDXRB, t) + oprangeset(ALDXRH, t) + oprangeset(ALDXRW, t) + + case ALDAXR: + oprangeset(ALDAXRB, t) + oprangeset(ALDAXRH, t) + oprangeset(ALDAXRW, t) + + case ALDXP: + oprangeset(ALDXPW, t) + + case ASTLR: + oprangeset(ASTLRW, t) + + case ASTXR: + oprangeset(ASTXRB, t) + oprangeset(ASTXRH, t) + oprangeset(ASTXRW, t) + + case ASTLXR: + oprangeset(ASTLXRB, t) + oprangeset(ASTLXRH, t) + oprangeset(ASTLXRW, t) + + case ASTXP: + oprangeset(ASTXPW, t) + + case AAESD: + oprangeset(AAESE, t) + oprangeset(AAESMC, t) + oprangeset(AAESIMC, t) + oprangeset(ASHA1H, t) + oprangeset(ASHA1SU1, t) + oprangeset(ASHA256SU0, t) + + case ASHA1C: + oprangeset(ASHA1P, t) + oprangeset(ASHA1M, t) + oprangeset(ASHA1SU0, t) + oprangeset(ASHA256H, t) + oprangeset(ASHA256H2, t) + oprangeset(ASHA256SU1, t) + + case obj.ANOP, + obj.AUNDEF, + obj.AUSEFIELD, + obj.AFUNCDATA, + obj.APCDATA, + obj.ADUFFZERO, + obj.ADUFFCOPY: + break + } + } +} + +func chipfloat7(ctxt *obj.Link, e float64) int { + ei := math.Float64bits(e) + l := uint32(int32(ei)) + h := uint32(int32(ei >> 32)) + + if l != 0 || h&0xffff != 0 { + return -1 + } + h1 := h & 0x7fc00000 + if h1 != 0x40000000 && h1 != 0x3fc00000 { + return -1 + } + n := 0 + + // sign bit (a) + if h&0x80000000 != 0 { + n |= 1 << 7 + } + + // exp sign bit (b) + if h1 == 0x3fc00000 { + n |= 1 << 6 + } + + // rest of exp and mantissa (cd-efgh) + n |= int((h >> 16) & 0x3f) + + //print("match %.8lux %.8lux %d\n", l, h, n); + return n +} + +/* form offset parameter to SYS; special register number */ +func SYSARG5(op0 int, op1 int, Cn int, Cm int, op2 int) int { + return op0<<19 | op1<<16 | Cn<<12 | Cm<<8 | op2<<5 +} + +func SYSARG4(op1 int, Cn int, Cm int, op2 int) int { + return SYSARG5(0, op1, Cn, Cm, op2) +} + +func asmout(ctxt *obj.Link, p *obj.Prog, o *Optab, out []uint32) { + o1 := uint32(0) + o2 := uint32(0) + o3 := uint32(0) + o4 := uint32(0) + o5 := uint32(0) + if false { /*debug['P']*/ + fmt.Printf("%x: %v\ttype %d\n", uint32(p.Pc), p, o.type_) + } + switch o.type_ { + default: + ctxt.Diag("unknown asm %d", o.type_) + prasm(p) + + case 0: /* pseudo ops */ + break + + case 1: /* op Rm,[Rn],Rd; default Rn=Rd -> op Rm<<0,[Rn,]Rd (shifted register) */ + o1 = oprrr(ctxt, p.As) + + rf := int(p.From.Reg) + rt := int(p.To.Reg) + r := int(p.Reg) + if p.To.Type == obj.TYPE_NONE { + rt = REGZERO + } + if r == 0 { + r = rt + } + o1 |= (uint32(rf&31) << 16) | (uint32(r&31) << 5) | uint32(rt&31) + + case 2: /* add/sub $(uimm12|uimm24)[,R],R; cmp $(uimm12|uimm24),R */ + o1 = opirr(ctxt, p.As) + + rt := int(p.To.Reg) + if p.To.Type == obj.TYPE_NONE { + if (o1 & Sbit) == 0 { + ctxt.Diag("ineffective ZR destination\n%v", p) + } + rt = REGZERO + } + + r := int(p.Reg) + if r == 0 { + r = rt + } + v := int32(regoff(ctxt, &p.From)) + o1 = oaddi(ctxt, int32(o1), v, r, rt) + + case 3: /* op R<<n[,R],R (shifted register) */ + o1 = oprrr(ctxt, p.As) + + o1 |= uint32(p.From.Offset) /* includes reg, op, etc */ + rt := int(p.To.Reg) + if p.To.Type == obj.TYPE_NONE { + rt = REGZERO + } + r := int(p.Reg) + if p.As == AMVN || p.As == AMVNW { + r = REGZERO + } else if r == 0 { + r = rt + } + o1 |= (uint32(r&31) << 5) | uint32(rt&31) + + case 4: /* mov $addcon, R; mov $recon, R; mov $racon, R */ + o1 = opirr(ctxt, p.As) + + rt := int(p.To.Reg) + r := int(o.param) + if r == 0 { + r = REGZERO + } else if r == REGFROM { + r = int(p.From.Reg) + } + if r == 0 { + r = REGSP + } + v := int32(regoff(ctxt, &p.From)) + if (v & 0xFFF000) != 0 { + v >>= 12 + o1 |= 1 << 22 /* shift, by 12 */ + } + + o1 |= ((uint32(v) & 0xFFF) << 10) | (uint32(r&31) << 5) | uint32(rt&31) + + case 5: /* b s; bl s */ + o1 = opbra(ctxt, p.As) + + if p.To.Sym == nil { + o1 |= uint32(brdist(ctxt, p, 0, 26, 2)) + break + } + + rel := obj.Addrel(ctxt.Cursym) + rel.Off = int32(ctxt.Pc) + rel.Siz = 4 + rel.Sym = p.To.Sym + rel.Add = p.To.Offset + rel.Type = obj.R_CALLARM64 + + case 6: /* b ,O(R); bl ,O(R) */ + o1 = opbrr(ctxt, p.As) + + o1 |= uint32(p.To.Reg&31) << 5 + rel := obj.Addrel(ctxt.Cursym) + rel.Off = int32(ctxt.Pc) + rel.Siz = 0 + rel.Type = obj.R_CALLIND + + case 7: /* beq s */ + o1 = opbra(ctxt, p.As) + + o1 |= uint32(brdist(ctxt, p, 0, 19, 2) << 5) + + case 8: /* lsl $c,[R],R -> ubfm $(W-1)-c,$(-c MOD (W-1)),Rn,Rd */ + rt := int(p.To.Reg) + + rf := int(p.Reg) + if rf == 0 { + rf = rt + } + v := int32(p.From.Offset) + switch p.As { + case AASR: + o1 = opbfm(ctxt, ASBFM, int(v), 63, rf, rt) + + case AASRW: + o1 = opbfm(ctxt, ASBFMW, int(v), 31, rf, rt) + + case ALSL: + o1 = opbfm(ctxt, AUBFM, int((64-v)&63), int(63-v), rf, rt) + + case ALSLW: + o1 = opbfm(ctxt, AUBFMW, int((32-v)&31), int(31-v), rf, rt) + + case ALSR: + o1 = opbfm(ctxt, AUBFM, int(v), 63, rf, rt) + + case ALSRW: + o1 = opbfm(ctxt, AUBFMW, int(v), 31, rf, rt) + + case AROR: + o1 = opextr(ctxt, AEXTR, v, rf, rf, rt) + + case ARORW: + o1 = opextr(ctxt, AEXTRW, v, rf, rf, rt) + + default: + ctxt.Diag("bad shift $con\n%v", ctxt.Curp) + break + } + + case 9: /* lsl Rm,[Rn],Rd -> lslv Rm, Rn, Rd */ + o1 = oprrr(ctxt, p.As) + + r := int(p.Reg) + if r == 0 { + r = int(p.To.Reg) + } + o1 |= (uint32(p.From.Reg&31) << 16) | (uint32(r&31) << 5) | uint32(p.To.Reg&31) + + case 10: /* brk/hvc/.../svc [$con] */ + o1 = opimm(ctxt, p.As) + + if p.To.Type != obj.TYPE_NONE { + o1 |= uint32((p.To.Offset & 0xffff) << 5) + } + + case 11: /* dword */ + aclass(ctxt, &p.To) + + o1 = uint32(ctxt.Instoffset) + o2 = uint32(ctxt.Instoffset >> 32) + if p.To.Sym != nil { + rel := obj.Addrel(ctxt.Cursym) + rel.Off = int32(ctxt.Pc) + rel.Siz = 8 + rel.Sym = p.To.Sym + rel.Add = p.To.Offset + rel.Type = obj.R_ADDR + o2 = 0 + o1 = o2 + } + + case 12: /* movT $vcon, reg */ + o1 = omovlit(ctxt, p.As, p, &p.From, int(p.To.Reg)) + + case 13: /* addop $vcon, [R], R (64 bit literal); cmp $lcon,R -> addop $lcon,R, ZR */ + o1 = omovlit(ctxt, AMOVD, p, &p.From, REGTMP) + + if !(o1 != 0) { + break + } + rt := int(p.To.Reg) + if p.To.Type == obj.TYPE_NONE { + rt = REGZERO + } + r := int(p.Reg) + if r == 0 { + r = rt + } + if p.To.Type != obj.TYPE_NONE && (p.To.Reg == REGSP || r == REGSP) { + o2 = opxrrr(ctxt, p.As) + o2 |= REGTMP & 31 << 16 + o2 |= LSL0_64 + } else { + o2 = oprrr(ctxt, p.As) + o2 |= REGTMP & 31 << 16 /* shift is 0 */ + } + + o2 |= uint32(r&31) << 5 + o2 |= uint32(rt & 31) + + case 14: /* word */ + if aclass(ctxt, &p.To) == C_ADDR { + ctxt.Diag("address constant needs DWORD\n%v", p) + } + o1 = uint32(ctxt.Instoffset) + if p.To.Sym != nil { + // This case happens with words generated + // in the PC stream as part of the literal pool. + rel := obj.Addrel(ctxt.Cursym) + + rel.Off = int32(ctxt.Pc) + rel.Siz = 4 + rel.Sym = p.To.Sym + rel.Add = p.To.Offset + rel.Type = obj.R_ADDR + o1 = 0 + } + + case 15: /* mul/mneg/umulh/umull r,[r,]r; madd/msub Rm,Rn,Ra,Rd */ + o1 = oprrr(ctxt, p.As) + + rf := int(p.From.Reg) + rt := int(p.To.Reg) + var r int + var ra int + if p.From3Type() == obj.TYPE_REG { + r = int(p.From3.Reg) + ra = int(p.Reg) + if ra == 0 { + ra = REGZERO + } + } else { + r = int(p.Reg) + if r == 0 { + r = rt + } + ra = REGZERO + } + + o1 |= (uint32(rf&31) << 16) | (uint32(ra&31) << 10) | (uint32(r&31) << 5) | uint32(rt&31) + + case 16: /* XremY R[,R],R -> XdivY; XmsubY */ + o1 = oprrr(ctxt, p.As) + + rf := int(p.From.Reg) + rt := int(p.To.Reg) + r := int(p.Reg) + if r == 0 { + r = rt + } + o1 |= (uint32(rf&31) << 16) | (uint32(r&31) << 5) | REGTMP&31 + o2 = oprrr(ctxt, AMSUBW) + o2 |= o1 & (1 << 31) /* same size */ + o2 |= (uint32(rf&31) << 16) | (uint32(r&31) << 10) | (REGTMP & 31 << 5) | uint32(rt&31) + + case 17: /* op Rm,[Rn],Rd; default Rn=ZR */ + o1 = oprrr(ctxt, p.As) + + rf := int(p.From.Reg) + rt := int(p.To.Reg) + r := int(p.Reg) + if p.To.Type == obj.TYPE_NONE { + rt = REGZERO + } + if r == 0 { + r = REGZERO + } + o1 |= (uint32(rf&31) << 16) | (uint32(r&31) << 5) | uint32(rt&31) + + case 18: /* csel cond,Rn,Rm,Rd; cinc/cinv/cneg cond,Rn,Rd; cset cond,Rd */ + o1 = oprrr(ctxt, p.As) + + cond := int(p.From.Reg) + r := int(p.Reg) + var rf int + if r != 0 { + if p.From3Type() == obj.TYPE_NONE { + /* CINC/CINV/CNEG */ + rf = r + + cond ^= 1 + } else { + rf = int(p.From3.Reg) /* CSEL */ + } + } else { + /* CSET */ + if p.From3Type() != obj.TYPE_NONE { + ctxt.Diag("invalid combination\n%v", p) + } + rf = REGZERO + r = rf + cond ^= 1 + } + + rt := int(p.To.Reg) + o1 |= (uint32(rf&31) << 16) | (uint32(cond&31) << 12) | (uint32(r&31) << 5) | uint32(rt&31) + + case 19: /* CCMN cond, (Rm|uimm5),Rn, uimm4 -> ccmn Rn,Rm,uimm4,cond */ + nzcv := int(p.To.Offset) + + cond := int(p.From.Reg) + var rf int + if p.From3.Type == obj.TYPE_REG { + o1 = oprrr(ctxt, p.As) + rf = int(p.From3.Reg) /* Rm */ + } else { + o1 = opirr(ctxt, p.As) + rf = int(p.From3.Offset & 0x1F) + } + + o1 |= (uint32(rf&31) << 16) | (uint32(cond) << 12) | (uint32(p.Reg&31) << 5) | uint32(nzcv) + + case 20: /* movT R,O(R) -> strT */ + v := int32(regoff(ctxt, &p.To)) + sz := int32(1 << uint(movesize(p.As))) + + r := int(p.To.Reg) + if r == 0 { + r = int(o.param) + } + if v < 0 || v%sz != 0 { /* unscaled 9-bit signed */ + o1 = olsr9s(ctxt, int32(opstr9(ctxt, p.As)), v, r, int(p.From.Reg)) + } else { + v = int32(offsetshift(ctxt, int64(v), int(o.a3))) + o1 = olsr12u(ctxt, int32(opstr12(ctxt, p.As)), v, r, int(p.From.Reg)) + } + + case 21: /* movT O(R),R -> ldrT */ + v := int32(regoff(ctxt, &p.From)) + sz := int32(1 << uint(movesize(p.As))) + + r := int(p.From.Reg) + if r == 0 { + r = int(o.param) + } + if v < 0 || v%sz != 0 { /* unscaled 9-bit signed */ + o1 = olsr9s(ctxt, int32(opldr9(ctxt, p.As)), v, r, int(p.To.Reg)) + } else { + v = int32(offsetshift(ctxt, int64(v), int(o.a1))) + //print("offset=%lld v=%ld a1=%d\n", instoffset, v, o->a1); + o1 = olsr12u(ctxt, int32(opldr12(ctxt, p.As)), v, r, int(p.To.Reg)) + } + + case 22: /* movT (R)O!,R; movT O(R)!, R -> ldrT */ + v := int32(p.From.Offset) + + if v < -256 || v > 255 { + ctxt.Diag("offset out of range\n%v", p) + } + o1 = opldrpp(ctxt, p.As) + if o.scond == C_XPOST { + o1 |= 1 << 10 + } else { + o1 |= 3 << 10 + } + o1 |= ((uint32(v) & 0x1FF) << 12) | (uint32(p.From.Reg&31) << 5) | uint32(p.To.Reg&31) + + case 23: /* movT R,(R)O!; movT O(R)!, R -> strT */ + v := int32(p.To.Offset) + + if v < -256 || v > 255 { + ctxt.Diag("offset out of range\n%v", p) + } + o1 = LD2STR(opldrpp(ctxt, p.As)) + if o.scond == C_XPOST { + o1 |= 1 << 10 + } else { + o1 |= 3 << 10 + } + o1 |= ((uint32(v) & 0x1FF) << 12) | (uint32(p.To.Reg&31) << 5) | uint32(p.From.Reg&31) + + case 24: /* mov/mvn Rs,Rd -> add $0,Rs,Rd or orr Rs,ZR,Rd */ + rf := int(p.From.Reg) + rt := int(p.To.Reg) + s := rf == REGSP || rt == REGSP + if p.As == AMVN || p.As == AMVNW { + if s { + ctxt.Diag("illegal SP reference\n%v", p) + } + o1 = oprrr(ctxt, p.As) + o1 |= (uint32(rf&31) << 16) | (REGZERO & 31 << 5) | uint32(rt&31) + } else if s { + o1 = opirr(ctxt, p.As) + o1 |= (uint32(rf&31) << 5) | uint32(rt&31) + } else { + o1 = oprrr(ctxt, p.As) + o1 |= (uint32(rf&31) << 16) | (REGZERO & 31 << 5) | uint32(rt&31) + } + + case 25: /* negX Rs, Rd -> subX Rs<<0, ZR, Rd */ + o1 = oprrr(ctxt, p.As) + + rf := int(p.From.Reg) + if rf == C_NONE { + rf = int(p.To.Reg) + } + rt := int(p.To.Reg) + o1 |= (uint32(rf&31) << 16) | (REGZERO & 31 << 5) | uint32(rt&31) + + case 26: /* negX Rm<<s, Rd -> subX Rm<<s, ZR, Rd */ + o1 = oprrr(ctxt, p.As) + + o1 |= uint32(p.From.Offset) /* includes reg, op, etc */ + rt := int(p.To.Reg) + o1 |= (REGZERO & 31 << 5) | uint32(rt&31) + + case 27: /* op Rm<<n[,Rn],Rd (extended register) */ + o1 = opxrrr(ctxt, p.As) + + if (p.From.Reg-obj.RBaseARM64)®_EXT != 0 { + ctxt.Diag("extended register not implemented\n%v", p) + // o1 |= uint32(p.From.Offset) /* includes reg, op, etc */ + } else { + o1 |= uint32(p.From.Reg&31) << 16 + } + rt := int(p.To.Reg) + if p.To.Type == obj.TYPE_NONE { + rt = REGZERO + } + r := int(p.Reg) + if r == 0 { + r = rt + } + o1 |= (uint32(r&31) << 5) | uint32(rt&31) + + case 28: /* logop $vcon, [R], R (64 bit literal) */ + o1 = omovlit(ctxt, AMOVD, p, &p.From, REGTMP) + + if !(o1 != 0) { + break + } + r := int(p.Reg) + if r == 0 { + r = int(p.To.Reg) + } + o2 = oprrr(ctxt, p.As) + o2 |= REGTMP & 31 << 16 /* shift is 0 */ + o2 |= uint32(r&31) << 5 + o2 |= uint32(p.To.Reg & 31) + + case 29: /* op Rn, Rd */ + fc := aclass(ctxt, &p.From) + tc := aclass(ctxt, &p.To) + if (p.As == AFMOVD || p.As == AFMOVS) && (fc == C_REG || fc == C_ZCON || tc == C_REG || tc == C_ZCON) { + // FMOV Rx, Fy or FMOV Fy, Rx + o1 = FPCVTI(0, 0, 0, 0, 6) + if p.As == AFMOVD { + o1 |= 1<<31 | 1<<22 // 64-bit + } + if fc == C_REG || fc == C_ZCON { + o1 |= 1 << 16 // FMOV Rx, Fy + } + } else { + o1 = oprrr(ctxt, p.As) + } + o1 |= uint32(p.From.Reg&31)<<5 | uint32(p.To.Reg&31) + + case 30: /* movT R,L(R) -> strT */ + s := movesize(o.as) + + if s < 0 { + ctxt.Diag("unexpected long move, op %v tab %v\n%v", p.As, o.as, p) + } + v := int32(regoff(ctxt, &p.To)) + if v < 0 { + ctxt.Diag("negative large offset\n%v", p) + } + if (v & ((1 << uint(s)) - 1)) != 0 { + ctxt.Diag("misaligned offset\n%v", p) + } + hi := v - (v & (0xFFF << uint(s))) + if (hi & 0xFFF) != 0 { + ctxt.Diag("internal: miscalculated offset %d [%d]\n%v", v, s, p) + } + + //fprint(2, "v=%ld (%#lux) s=%d hi=%ld (%#lux) v'=%ld (%#lux)\n", v, v, s, hi, hi, ((v-hi)>>s)&0xFFF, ((v-hi)>>s)&0xFFF); + r := int(p.To.Reg) + + if r == 0 { + r = int(o.param) + } + o1 = oaddi(ctxt, int32(opirr(ctxt, AADD)), hi, r, REGTMP) + o2 = olsr12u(ctxt, int32(opstr12(ctxt, p.As)), ((v-hi)>>uint(s))&0xFFF, REGTMP, int(p.From.Reg)) + + case 31: /* movT L(R), R -> ldrT */ + s := movesize(o.as) + + if s < 0 { + ctxt.Diag("unexpected long move, op %v tab %v\n%v", p.As, o.as, p) + } + v := int32(regoff(ctxt, &p.From)) + if v < 0 { + ctxt.Diag("negative large offset\n%v", p) + } + if (v & ((1 << uint(s)) - 1)) != 0 { + ctxt.Diag("misaligned offset\n%v", p) + } + hi := v - (v & (0xFFF << uint(s))) + if (hi & 0xFFF) != 0 { + ctxt.Diag("internal: miscalculated offset %d [%d]\n%v", v, s, p) + } + + //fprint(2, "v=%ld (%#lux) s=%d hi=%ld (%#lux) v'=%ld (%#lux)\n", v, v, s, hi, hi, ((v-hi)>>s)&0xFFF, ((v-hi)>>s)&0xFFF); + r := int(p.From.Reg) + + if r == 0 { + r = int(o.param) + } + o1 = oaddi(ctxt, int32(opirr(ctxt, AADD)), hi, r, REGTMP) + o2 = olsr12u(ctxt, int32(opldr12(ctxt, p.As)), ((v-hi)>>uint(s))&0xFFF, REGTMP, int(p.To.Reg)) + + case 32: /* mov $con, R -> movz/movn */ + o1 = omovconst(ctxt, p.As, p, &p.From, int(p.To.Reg)) + + case 33: /* movk $uimm16 << pos */ + o1 = opirr(ctxt, p.As) + + d := p.From.Offset + if (d >> 16) != 0 { + ctxt.Diag("requires uimm16\n%v", p) + } + s := 0 + if p.From3Type() != obj.TYPE_NONE { + if p.From3.Type != obj.TYPE_CONST { + ctxt.Diag("missing bit position\n%v", p) + } + s = int(p.From3.Offset / 16) + if (s*16&0xF) != 0 || s >= 4 || (o1&S64) == 0 && s >= 2 { + ctxt.Diag("illegal bit position\n%v", p) + } + } + + rt := int(p.To.Reg) + o1 |= uint32(((d & 0xFFFF) << 5) | int64((uint32(s)&3)<<21) | int64(rt&31)) + + case 34: /* mov $lacon,R */ + o1 = omovlit(ctxt, AMOVD, p, &p.From, REGTMP) + + if !(o1 != 0) { + break + } + o2 = opxrrr(ctxt, AADD) + o2 |= REGTMP & 31 << 16 + o2 |= LSL0_64 + r := int(p.From.Reg) + if r == 0 { + r = int(o.param) + } + o2 |= uint32(r&31) << 5 + o2 |= uint32(p.To.Reg & 31) + + case 35: /* mov SPR,R -> mrs */ + o1 = oprrr(ctxt, AMRS) + + v := int32(p.From.Offset) + if (o1 & uint32(v&^(3<<19))) != 0 { + ctxt.Diag("MRS register value overlap\n%v", p) + } + o1 |= uint32(v) + o1 |= uint32(p.To.Reg & 31) + + case 36: /* mov R,SPR */ + o1 = oprrr(ctxt, AMSR) + + v := int32(p.To.Offset) + if (o1 & uint32(v&^(3<<19))) != 0 { + ctxt.Diag("MSR register value overlap\n%v", p) + } + o1 |= uint32(v) + o1 |= uint32(p.From.Reg & 31) + + case 37: /* mov $con,PSTATEfield -> MSR [immediate] */ + if (uint64(p.From.Offset) &^ uint64(0xF)) != 0 { + ctxt.Diag("illegal immediate for PSTATE field\n%v", p) + } + o1 = opirr(ctxt, AMSR) + o1 |= uint32((p.From.Offset & 0xF) << 8) /* Crm */ + v := int32(0) + for i := 0; i < len(pstatefield); i++ { + if int64(pstatefield[i].a) == p.To.Offset { + v = int32(pstatefield[i].b) + break + } + } + + if v == 0 { + ctxt.Diag("illegal PSTATE field for immediate move\n%v", p) + } + o1 |= uint32(v) + + case 38: /* clrex [$imm] */ + o1 = opimm(ctxt, p.As) + + if p.To.Type == obj.TYPE_NONE { + o1 |= 0xF << 8 + } else { + o1 |= uint32((p.To.Offset & 0xF) << 8) + } + + case 39: /* cbz R, rel */ + o1 = opirr(ctxt, p.As) + + o1 |= uint32(p.From.Reg & 31) + o1 |= uint32(brdist(ctxt, p, 0, 19, 2) << 5) + + case 40: /* tbz */ + o1 = opirr(ctxt, p.As) + + v := int32(p.From.Offset) + if v < 0 || v > 63 { + ctxt.Diag("illegal bit number\n%v", p) + } + o1 |= ((uint32(v) & 0x20) << (31 - 5)) | ((uint32(v) & 0x1F) << 19) + o1 |= uint32(brdist(ctxt, p, 0, 14, 2) << 5) + o1 |= uint32(p.Reg) + + case 41: /* eret, nop, others with no operands */ + o1 = op0(ctxt, p.As) + + case 42: /* bfm R,r,s,R */ + o1 = opbfm(ctxt, p.As, int(p.From.Offset), int(p.From3.Offset), int(p.Reg), int(p.To.Reg)) + + case 43: /* bfm aliases */ + r := int(p.From.Offset) + + s := int(p.From3.Offset) + rf := int(p.Reg) + rt := int(p.To.Reg) + if rf == 0 { + rf = rt + } + switch p.As { + case ABFI: + o1 = opbfm(ctxt, ABFM, 64-r, s-1, rf, rt) + + case ABFIW: + o1 = opbfm(ctxt, ABFMW, 32-r, s-1, rf, rt) + + case ABFXIL: + o1 = opbfm(ctxt, ABFM, r, r+s-1, rf, rt) + + case ABFXILW: + o1 = opbfm(ctxt, ABFMW, r, r+s-1, rf, rt) + + case ASBFIZ: + o1 = opbfm(ctxt, ASBFM, 64-r, s-1, rf, rt) + + case ASBFIZW: + o1 = opbfm(ctxt, ASBFMW, 32-r, s-1, rf, rt) + + case ASBFX: + o1 = opbfm(ctxt, ASBFM, r, r+s-1, rf, rt) + + case ASBFXW: + o1 = opbfm(ctxt, ASBFMW, r, r+s-1, rf, rt) + + case AUBFIZ: + o1 = opbfm(ctxt, AUBFM, 64-r, s-1, rf, rt) + + case AUBFIZW: + o1 = opbfm(ctxt, AUBFMW, 32-r, s-1, rf, rt) + + case AUBFX: + o1 = opbfm(ctxt, AUBFM, r, r+s-1, rf, rt) + + case AUBFXW: + o1 = opbfm(ctxt, AUBFMW, r, r+s-1, rf, rt) + + default: + ctxt.Diag("bad bfm alias\n%v", ctxt.Curp) + break + } + + case 44: /* extr $b, Rn, Rm, Rd */ + o1 = opextr(ctxt, p.As, int32(p.From.Offset), int(p.From3.Reg), int(p.Reg), int(p.To.Reg)) + + case 45: /* sxt/uxt[bhw] R,R; movT R,R -> sxtT R,R */ + rf := int(p.From.Reg) + + rt := int(p.To.Reg) + as := p.As + if rf == REGZERO { + as = AMOVWU /* clearer in disassembly */ + } + switch as { + case AMOVB, ASXTB: + o1 = opbfm(ctxt, ASBFM, 0, 7, rf, rt) + + case AMOVH, ASXTH: + o1 = opbfm(ctxt, ASBFM, 0, 15, rf, rt) + + case AMOVW, ASXTW: + o1 = opbfm(ctxt, ASBFM, 0, 31, rf, rt) + + case AMOVBU, AUXTB: + o1 = opbfm(ctxt, AUBFM, 0, 7, rf, rt) + + case AMOVHU, AUXTH: + o1 = opbfm(ctxt, AUBFM, 0, 15, rf, rt) + + case AMOVWU: + o1 = oprrr(ctxt, as) | (uint32(rf&31) << 16) | (REGZERO & 31 << 5) | uint32(rt&31) + + case AUXTW: + o1 = opbfm(ctxt, AUBFM, 0, 31, rf, rt) + + case ASXTBW: + o1 = opbfm(ctxt, ASBFMW, 0, 7, rf, rt) + + case ASXTHW: + o1 = opbfm(ctxt, ASBFMW, 0, 15, rf, rt) + + case AUXTBW: + o1 = opbfm(ctxt, AUBFMW, 0, 7, rf, rt) + + case AUXTHW: + o1 = opbfm(ctxt, AUBFMW, 0, 15, rf, rt) + + default: + ctxt.Diag("bad sxt %v", as) + break + } + + case 46: /* cls */ + o1 = opbit(ctxt, p.As) + + o1 |= uint32(p.From.Reg&31) << 5 + o1 |= uint32(p.To.Reg & 31) + + case 47: /* movT R,V(R) -> strT (huge offset) */ + o1 = omovlit(ctxt, AMOVW, p, &p.To, REGTMP) + + if !(o1 != 0) { + break + } + r := int(p.To.Reg) + if r == 0 { + r = int(o.param) + } + o2 = olsxrr(ctxt, p.As, REGTMP, r, int(p.From.Reg)) + + case 48: /* movT V(R), R -> ldrT (huge offset) */ + o1 = omovlit(ctxt, AMOVW, p, &p.From, REGTMP) + + if !(o1 != 0) { + break + } + r := int(p.From.Reg) + if r == 0 { + r = int(o.param) + } + o2 = olsxrr(ctxt, p.As, REGTMP, r, int(p.To.Reg)) + + case 50: /* sys/sysl */ + o1 = opirr(ctxt, p.As) + + if (p.From.Offset &^ int64(SYSARG4(0x7, 0xF, 0xF, 0x7))) != 0 { + ctxt.Diag("illegal SYS argument\n%v", p) + } + o1 |= uint32(p.From.Offset) + if p.To.Type == obj.TYPE_REG { + o1 |= uint32(p.To.Reg & 31) + } else if p.Reg != 0 { + o1 |= uint32(p.Reg & 31) + } else { + o1 |= 0x1F + } + + case 51: /* dmb */ + o1 = opirr(ctxt, p.As) + + if p.From.Type == obj.TYPE_CONST { + o1 |= uint32((p.From.Offset & 0xF) << 8) + } + + case 52: /* hint */ + o1 = opirr(ctxt, p.As) + + o1 |= uint32((p.From.Offset & 0x7F) << 5) + + case 53: /* and/or/eor/bic/... $bitcon, Rn, Rd */ + a := p.As + rt := int(p.To.Reg) + r := int(p.Reg) + if r == 0 { + r = rt + } + mode := 64 + v := uint64(p.From.Offset) + switch p.As { + case AANDW, AORRW, AEORW, AANDSW: + mode = 32 + case ABIC, AORN, AEON, ABICS: + v = ^v + case ABICW, AORNW, AEONW, ABICSW: + v = ^v + mode = 32 + } + o1 = opirr(ctxt, a) + o1 |= bitconEncode(v, mode) | uint32(r&31)<<5 | uint32(rt&31) + + case 54: /* floating point arith */ + o1 = oprrr(ctxt, p.As) + + var rf int + if p.From.Type == obj.TYPE_CONST { + rf = chipfloat7(ctxt, p.From.Val.(float64)) + if rf < 0 || true { + ctxt.Diag("invalid floating-point immediate\n%v", p) + rf = 0 + } + + rf |= (1 << 3) + } else { + rf = int(p.From.Reg) + } + rt := int(p.To.Reg) + r := int(p.Reg) + if (o1&(0x1F<<24)) == (0x1E<<24) && (o1&(1<<11)) == 0 { /* monadic */ + r = rf + rf = 0 + } else if r == 0 { + r = rt + } + o1 |= (uint32(rf&31) << 16) | (uint32(r&31) << 5) | uint32(rt&31) + + case 56: /* floating point compare */ + o1 = oprrr(ctxt, p.As) + + var rf int + if p.From.Type == obj.TYPE_CONST { + o1 |= 8 /* zero */ + rf = 0 + } else { + rf = int(p.From.Reg) + } + rt := int(p.Reg) + o1 |= uint32(rf&31)<<16 | uint32(rt&31)<<5 + + case 57: /* floating point conditional compare */ + o1 = oprrr(ctxt, p.As) + + cond := int(p.From.Reg) + nzcv := int(p.To.Offset) + if nzcv&^0xF != 0 { + ctxt.Diag("implausible condition\n%v", p) + } + rf := int(p.Reg) + if p.From3 == nil || p.From3.Reg < REG_F0 || p.From3.Reg > REG_F31 { + ctxt.Diag("illegal FCCMP\n%v", p) + break + } + rt := int(p.From3.Reg) + o1 |= uint32(rf&31)<<16 | uint32(cond)<<12 | uint32(rt&31)<<5 | uint32(nzcv) + + case 58: /* ldar/ldxr/ldaxr */ + o1 = opload(ctxt, p.As) + + o1 |= 0x1F << 16 + o1 |= uint32(p.From.Reg) << 5 + if p.Reg != 0 { + o1 |= uint32(p.Reg) << 10 + } else { + o1 |= 0x1F << 10 + } + o1 |= uint32(p.To.Reg & 31) + + case 59: /* stxr/stlxr */ + o1 = opstore(ctxt, p.As) + + if p.RegTo2 != obj.REG_NONE { + o1 |= uint32(p.RegTo2&31) << 16 + } else { + o1 |= 0x1F << 16 + } + + // TODO(aram): add support for STXP + o1 |= uint32(p.To.Reg&31) << 5 + + o1 |= uint32(p.From.Reg & 31) + + case 60: /* adrp label,r */ + d := brdist(ctxt, p, 12, 21, 0) + + o1 = ADR(1, uint32(d), uint32(p.To.Reg)) + + case 61: /* adr label, r */ + d := brdist(ctxt, p, 0, 21, 0) + + o1 = ADR(0, uint32(d), uint32(p.To.Reg)) + + case 62: /* op $movcon, [R], R -> mov $movcon, REGTMP + op REGTMP, [R], R */ + if p.Reg == REGTMP { + ctxt.Diag("cannot use REGTMP as source: %v\n", p) + } + o1 = omovconst(ctxt, AMOVD, p, &p.From, REGTMP) + + rt := int(p.To.Reg) + if p.To.Type == obj.TYPE_NONE { + rt = REGZERO + } + r := int(p.Reg) + if r == 0 { + r = rt + } + if p.To.Type != obj.TYPE_NONE && (p.To.Reg == REGSP || r == REGSP) { + o2 = opxrrr(ctxt, p.As) + o2 |= REGTMP & 31 << 16 + o2 |= LSL0_64 + } else { + o2 = oprrr(ctxt, p.As) + o2 |= REGTMP & 31 << 16 /* shift is 0 */ + } + o2 |= uint32(r&31) << 5 + o2 |= uint32(rt & 31) + + /* reloc ops */ + case 64: /* movT R,addr -> adrp + add + movT R, (REGTMP) */ + o1 = ADR(1, 0, REGTMP) + o2 = opirr(ctxt, AADD) | REGTMP&31<<5 | REGTMP&31 + rel := obj.Addrel(ctxt.Cursym) + rel.Off = int32(ctxt.Pc) + rel.Siz = 8 + rel.Sym = p.To.Sym + rel.Add = p.To.Offset + rel.Type = obj.R_ADDRARM64 + o3 = olsr12u(ctxt, int32(opstr12(ctxt, p.As)), 0, REGTMP, int(p.From.Reg)) + + case 65: /* movT addr,R -> adrp + add + movT (REGTMP), R */ + o1 = ADR(1, 0, REGTMP) + o2 = opirr(ctxt, AADD) | REGTMP&31<<5 | REGTMP&31 + rel := obj.Addrel(ctxt.Cursym) + rel.Off = int32(ctxt.Pc) + rel.Siz = 8 + rel.Sym = p.From.Sym + rel.Add = p.From.Offset + rel.Type = obj.R_ADDRARM64 + o3 = olsr12u(ctxt, int32(opldr12(ctxt, p.As)), 0, REGTMP, int(p.To.Reg)) + + case 66: /* ldp O(R)!, (r1, r2); ldp (R)O!, (r1, r2) */ + v := int32(p.From.Offset) + + if v < -512 || v > 504 { + ctxt.Diag("offset out of range\n%v", p) + } + if o.scond == C_XPOST { + o1 |= 1 << 23 + } else { + o1 |= 3 << 23 + } + o1 |= 1 << 22 + o1 |= uint32(int64(2<<30|5<<27|((uint32(v)/8)&0x7f)<<15) | p.To.Offset<<10 | int64(uint32(p.From.Reg&31)<<5) | int64(p.To.Reg&31)) + + case 67: /* stp (r1, r2), O(R)!; stp (r1, r2), (R)O! */ + v := int32(p.To.Offset) + + if v < -512 || v > 504 { + ctxt.Diag("offset out of range\n%v", p) + } + if o.scond == C_XPOST { + o1 |= 1 << 23 + } else { + o1 |= 3 << 23 + } + o1 |= uint32(int64(2<<30|5<<27|((uint32(v)/8)&0x7f)<<15) | p.From.Offset<<10 | int64(uint32(p.To.Reg&31)<<5) | int64(p.From.Reg&31)) + + case 68: /* movT $vconaddr(SB), reg -> adrp + add + reloc */ + if p.As == AMOVW { + ctxt.Diag("invalid load of 32-bit address: %v", p) + } + o1 = ADR(1, 0, uint32(p.To.Reg)) + o2 = opirr(ctxt, AADD) | uint32(p.To.Reg&31)<<5 | uint32(p.To.Reg&31) + rel := obj.Addrel(ctxt.Cursym) + rel.Off = int32(ctxt.Pc) + rel.Siz = 8 + rel.Sym = p.From.Sym + rel.Add = p.From.Offset + rel.Type = obj.R_ADDRARM64 + + case 69: /* LE model movd $tlsvar, reg -> movz reg, 0 + reloc */ + o1 = opirr(ctxt, AMOVZ) + o1 |= uint32(p.To.Reg & 31) + rel := obj.Addrel(ctxt.Cursym) + rel.Off = int32(ctxt.Pc) + rel.Siz = 4 + rel.Sym = p.From.Sym + rel.Type = obj.R_ARM64_TLS_LE + if p.From.Offset != 0 { + ctxt.Diag("invalid offset on MOVW $tlsvar") + } + + case 70: /* IE model movd $tlsvar, reg -> adrp REGTMP, 0; ldr reg, [REGTMP, #0] + relocs */ + o1 = ADR(1, 0, REGTMP) + o2 = olsr12u(ctxt, int32(opldr12(ctxt, AMOVD)), 0, REGTMP, int(p.To.Reg)) + rel := obj.Addrel(ctxt.Cursym) + rel.Off = int32(ctxt.Pc) + rel.Siz = 8 + rel.Sym = p.From.Sym + rel.Add = 0 + rel.Type = obj.R_ARM64_TLS_IE + if p.From.Offset != 0 { + ctxt.Diag("invalid offset on MOVW $tlsvar") + } + + case 71: /* movd sym@GOT, reg -> adrp REGTMP, #0; ldr reg, [REGTMP, #0] + relocs */ + o1 = ADR(1, 0, REGTMP) + o2 = olsr12u(ctxt, int32(opldr12(ctxt, AMOVD)), 0, REGTMP, int(p.To.Reg)) + rel := obj.Addrel(ctxt.Cursym) + rel.Off = int32(ctxt.Pc) + rel.Siz = 8 + rel.Sym = p.From.Sym + rel.Add = 0 + rel.Type = obj.R_ARM64_GOTPCREL + + // This is supposed to be something that stops execution. + // It's not supposed to be reached, ever, but if it is, we'd + // like to be able to tell how we got there. Assemble as + // 0xbea71700 which is guaranteed to raise undefined instruction + // exception. + case 90: + o1 = 0xbea71700 + + break + } + + out[0] = o1 + out[1] = o2 + out[2] = o3 + out[3] = o4 + out[4] = o5 + return +} + +/* + * basic Rm op Rn -> Rd (using shifted register with 0) + * also op Rn -> Rt + * also Rm*Rn op Ra -> Rd + */ +func oprrr(ctxt *obj.Link, a obj.As) uint32 { + switch a { + case AADC: + return S64 | 0<<30 | 0<<29 | 0xd0<<21 | 0<<10 + + case AADCW: + return S32 | 0<<30 | 0<<29 | 0xd0<<21 | 0<<10 + + case AADCS: + return S64 | 0<<30 | 1<<29 | 0xd0<<21 | 0<<10 + + case AADCSW: + return S32 | 0<<30 | 1<<29 | 0xd0<<21 | 0<<10 + + case ANGC, ASBC: + return S64 | 1<<30 | 0<<29 | 0xd0<<21 | 0<<10 + + case ANGCS, ASBCS: + return S64 | 1<<30 | 1<<29 | 0xd0<<21 | 0<<10 + + case ANGCW, ASBCW: + return S32 | 1<<30 | 0<<29 | 0xd0<<21 | 0<<10 + + case ANGCSW, ASBCSW: + return S32 | 1<<30 | 1<<29 | 0xd0<<21 | 0<<10 + + case AADD: + return S64 | 0<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10 + + case AADDW: + return S32 | 0<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10 + + case ACMN, AADDS: + return S64 | 0<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10 + + case ACMNW, AADDSW: + return S32 | 0<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10 + + case ASUB: + return S64 | 1<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10 + + case ASUBW: + return S32 | 1<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10 + + case ACMP, ASUBS: + return S64 | 1<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10 + + case ACMPW, ASUBSW: + return S32 | 1<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 0<<21 | 0<<10 + + case AAND: + return S64 | 0<<29 | 0xA<<24 + + case AANDW: + return S32 | 0<<29 | 0xA<<24 + + case AMOVD, AORR: + return S64 | 1<<29 | 0xA<<24 + + // case AMOVW: + case AMOVWU, AORRW: + return S32 | 1<<29 | 0xA<<24 + + case AEOR: + return S64 | 2<<29 | 0xA<<24 + + case AEORW: + return S32 | 2<<29 | 0xA<<24 + + case AANDS: + return S64 | 3<<29 | 0xA<<24 + + case AANDSW: + return S32 | 3<<29 | 0xA<<24 + + case ABIC: + return S64 | 0<<29 | 0xA<<24 | 1<<21 + + case ABICW: + return S32 | 0<<29 | 0xA<<24 | 1<<21 + + case ABICS: + return S64 | 3<<29 | 0xA<<24 | 1<<21 + + case ABICSW: + return S32 | 3<<29 | 0xA<<24 | 1<<21 + + case AEON: + return S64 | 2<<29 | 0xA<<24 | 1<<21 + + case AEONW: + return S32 | 2<<29 | 0xA<<24 | 1<<21 + + case AMVN, AORN: + return S64 | 1<<29 | 0xA<<24 | 1<<21 + + case AMVNW, AORNW: + return S32 | 1<<29 | 0xA<<24 | 1<<21 + + case AASR: + return S64 | OPDP2(10) /* also ASRV */ + + case AASRW: + return S32 | OPDP2(10) + + case ALSL: + return S64 | OPDP2(8) + + case ALSLW: + return S32 | OPDP2(8) + + case ALSR: + return S64 | OPDP2(9) + + case ALSRW: + return S32 | OPDP2(9) + + case AROR: + return S64 | OPDP2(11) + + case ARORW: + return S32 | OPDP2(11) + + case ACCMN: + return S64 | 0<<30 | 1<<29 | 0xD2<<21 | 0<<11 | 0<<10 | 0<<4 /* cond<<12 | nzcv<<0 */ + + case ACCMNW: + return S32 | 0<<30 | 1<<29 | 0xD2<<21 | 0<<11 | 0<<10 | 0<<4 + + case ACCMP: + return S64 | 1<<30 | 1<<29 | 0xD2<<21 | 0<<11 | 0<<10 | 0<<4 /* imm5<<16 | cond<<12 | nzcv<<0 */ + + case ACCMPW: + return S32 | 1<<30 | 1<<29 | 0xD2<<21 | 0<<11 | 0<<10 | 0<<4 + + case ACRC32B: + return S32 | OPDP2(16) + + case ACRC32H: + return S32 | OPDP2(17) + + case ACRC32W: + return S32 | OPDP2(18) + + case ACRC32X: + return S64 | OPDP2(19) + + case ACRC32CB: + return S32 | OPDP2(20) + + case ACRC32CH: + return S32 | OPDP2(21) + + case ACRC32CW: + return S32 | OPDP2(22) + + case ACRC32CX: + return S64 | OPDP2(23) + + case ACSEL: + return S64 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10 + + case ACSELW: + return S32 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10 + + case ACSET: + return S64 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10 + + case ACSETW: + return S32 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10 + + case ACSETM: + return S64 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10 + + case ACSETMW: + return S32 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10 + + case ACINC, ACSINC: + return S64 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10 + + case ACINCW, ACSINCW: + return S32 | 0<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10 + + case ACINV, ACSINV: + return S64 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10 + + case ACINVW, ACSINVW: + return S32 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 0<<10 + + case ACNEG, ACSNEG: + return S64 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10 + + case ACNEGW, ACSNEGW: + return S32 | 1<<30 | 0<<29 | 0xD4<<21 | 0<<11 | 1<<10 + + case AMUL, AMADD: + return S64 | 0<<29 | 0x1B<<24 | 0<<21 | 0<<15 + + case AMULW, AMADDW: + return S32 | 0<<29 | 0x1B<<24 | 0<<21 | 0<<15 + + case AMNEG, AMSUB: + return S64 | 0<<29 | 0x1B<<24 | 0<<21 | 1<<15 + + case AMNEGW, AMSUBW: + return S32 | 0<<29 | 0x1B<<24 | 0<<21 | 1<<15 + + case AMRS: + return SYSOP(1, 2, 0, 0, 0, 0, 0) + + case AMSR: + return SYSOP(0, 2, 0, 0, 0, 0, 0) + + case ANEG: + return S64 | 1<<30 | 0<<29 | 0xB<<24 | 0<<21 + + case ANEGW: + return S32 | 1<<30 | 0<<29 | 0xB<<24 | 0<<21 + + case ANEGS: + return S64 | 1<<30 | 1<<29 | 0xB<<24 | 0<<21 + + case ANEGSW: + return S32 | 1<<30 | 1<<29 | 0xB<<24 | 0<<21 + + case AREM, ASDIV: + return S64 | OPDP2(3) + + case AREMW, ASDIVW: + return S32 | OPDP2(3) + + case ASMULL, ASMADDL: + return OPDP3(1, 0, 1, 0) + + case ASMNEGL, ASMSUBL: + return OPDP3(1, 0, 1, 1) + + case ASMULH: + return OPDP3(1, 0, 2, 0) + + case AUMULL, AUMADDL: + return OPDP3(1, 0, 5, 0) + + case AUMNEGL, AUMSUBL: + return OPDP3(1, 0, 5, 1) + + case AUMULH: + return OPDP3(1, 0, 6, 0) + + case AUREM, AUDIV: + return S64 | OPDP2(2) + + case AUREMW, AUDIVW: + return S32 | OPDP2(2) + + case AAESE: + return 0x4E<<24 | 2<<20 | 8<<16 | 4<<12 | 2<<10 + + case AAESD: + return 0x4E<<24 | 2<<20 | 8<<16 | 5<<12 | 2<<10 + + case AAESMC: + return 0x4E<<24 | 2<<20 | 8<<16 | 6<<12 | 2<<10 + + case AAESIMC: + return 0x4E<<24 | 2<<20 | 8<<16 | 7<<12 | 2<<10 + + case ASHA1C: + return 0x5E<<24 | 0<<12 + + case ASHA1P: + return 0x5E<<24 | 1<<12 + + case ASHA1M: + return 0x5E<<24 | 2<<12 + + case ASHA1SU0: + return 0x5E<<24 | 3<<12 + + case ASHA256H: + return 0x5E<<24 | 4<<12 + + case ASHA256H2: + return 0x5E<<24 | 5<<12 + + case ASHA256SU1: + return 0x5E<<24 | 6<<12 + + case ASHA1H: + return 0x5E<<24 | 2<<20 | 8<<16 | 0<<12 | 2<<10 + + case ASHA1SU1: + return 0x5E<<24 | 2<<20 | 8<<16 | 1<<12 | 2<<10 + + case ASHA256SU0: + return 0x5E<<24 | 2<<20 | 8<<16 | 2<<12 | 2<<10 + + case AFCVTZSD: + return FPCVTI(1, 0, 1, 3, 0) + + case AFCVTZSDW: + return FPCVTI(0, 0, 1, 3, 0) + + case AFCVTZSS: + return FPCVTI(1, 0, 0, 3, 0) + + case AFCVTZSSW: + return FPCVTI(0, 0, 0, 3, 0) + + case AFCVTZUD: + return FPCVTI(1, 0, 1, 3, 1) + + case AFCVTZUDW: + return FPCVTI(0, 0, 1, 3, 1) + + case AFCVTZUS: + return FPCVTI(1, 0, 0, 3, 1) + + case AFCVTZUSW: + return FPCVTI(0, 0, 0, 3, 1) + + case ASCVTFD: + return FPCVTI(1, 0, 1, 0, 2) + + case ASCVTFS: + return FPCVTI(1, 0, 0, 0, 2) + + case ASCVTFWD: + return FPCVTI(0, 0, 1, 0, 2) + + case ASCVTFWS: + return FPCVTI(0, 0, 0, 0, 2) + + case AUCVTFD: + return FPCVTI(1, 0, 1, 0, 3) + + case AUCVTFS: + return FPCVTI(1, 0, 0, 0, 3) + + case AUCVTFWD: + return FPCVTI(0, 0, 1, 0, 3) + + case AUCVTFWS: + return FPCVTI(0, 0, 0, 0, 3) + + case AFADDS: + return FPOP2S(0, 0, 0, 2) + + case AFADDD: + return FPOP2S(0, 0, 1, 2) + + case AFSUBS: + return FPOP2S(0, 0, 0, 3) + + case AFSUBD: + return FPOP2S(0, 0, 1, 3) + + case AFMULS: + return FPOP2S(0, 0, 0, 0) + + case AFMULD: + return FPOP2S(0, 0, 1, 0) + + case AFDIVS: + return FPOP2S(0, 0, 0, 1) + + case AFDIVD: + return FPOP2S(0, 0, 1, 1) + + case AFMAXS: + return FPOP2S(0, 0, 0, 4) + + case AFMINS: + return FPOP2S(0, 0, 0, 5) + + case AFMAXD: + return FPOP2S(0, 0, 1, 4) + + case AFMIND: + return FPOP2S(0, 0, 1, 5) + + case AFMAXNMS: + return FPOP2S(0, 0, 0, 6) + + case AFMAXNMD: + return FPOP2S(0, 0, 1, 6) + + case AFMINNMS: + return FPOP2S(0, 0, 0, 7) + + case AFMINNMD: + return FPOP2S(0, 0, 1, 7) + + case AFNMULS: + return FPOP2S(0, 0, 0, 8) + + case AFNMULD: + return FPOP2S(0, 0, 1, 8) + + case AFCMPS: + return FPCMP(0, 0, 0, 0, 0) + + case AFCMPD: + return FPCMP(0, 0, 1, 0, 0) + + case AFCMPES: + return FPCMP(0, 0, 0, 0, 16) + + case AFCMPED: + return FPCMP(0, 0, 1, 0, 16) + + case AFCCMPS: + return FPCCMP(0, 0, 0, 0) + + case AFCCMPD: + return FPCCMP(0, 0, 1, 0) + + case AFCCMPES: + return FPCCMP(0, 0, 0, 1) + + case AFCCMPED: + return FPCCMP(0, 0, 1, 1) + + case AFCSELS: + return 0x1E<<24 | 0<<22 | 1<<21 | 3<<10 + + case AFCSELD: + return 0x1E<<24 | 1<<22 | 1<<21 | 3<<10 + + case AFMOVS: + return FPOP1S(0, 0, 0, 0) + + case AFABSS: + return FPOP1S(0, 0, 0, 1) + + case AFNEGS: + return FPOP1S(0, 0, 0, 2) + + case AFSQRTS: + return FPOP1S(0, 0, 0, 3) + + case AFCVTSD: + return FPOP1S(0, 0, 0, 5) + + case AFCVTSH: + return FPOP1S(0, 0, 0, 7) + + case AFRINTNS: + return FPOP1S(0, 0, 0, 8) + + case AFRINTPS: + return FPOP1S(0, 0, 0, 9) + + case AFRINTMS: + return FPOP1S(0, 0, 0, 10) + + case AFRINTZS: + return FPOP1S(0, 0, 0, 11) + + case AFRINTAS: + return FPOP1S(0, 0, 0, 12) + + case AFRINTXS: + return FPOP1S(0, 0, 0, 14) + + case AFRINTIS: + return FPOP1S(0, 0, 0, 15) + + case AFMOVD: + return FPOP1S(0, 0, 1, 0) + + case AFABSD: + return FPOP1S(0, 0, 1, 1) + + case AFNEGD: + return FPOP1S(0, 0, 1, 2) + + case AFSQRTD: + return FPOP1S(0, 0, 1, 3) + + case AFCVTDS: + return FPOP1S(0, 0, 1, 4) + + case AFCVTDH: + return FPOP1S(0, 0, 1, 7) + + case AFRINTND: + return FPOP1S(0, 0, 1, 8) + + case AFRINTPD: + return FPOP1S(0, 0, 1, 9) + + case AFRINTMD: + return FPOP1S(0, 0, 1, 10) + + case AFRINTZD: + return FPOP1S(0, 0, 1, 11) + + case AFRINTAD: + return FPOP1S(0, 0, 1, 12) + + case AFRINTXD: + return FPOP1S(0, 0, 1, 14) + + case AFRINTID: + return FPOP1S(0, 0, 1, 15) + + case AFCVTHS: + return FPOP1S(0, 0, 3, 4) + + case AFCVTHD: + return FPOP1S(0, 0, 3, 5) + } + + ctxt.Diag("bad rrr %d %v", a, a) + prasm(ctxt.Curp) + return 0 +} + +/* + * imm -> Rd + * imm op Rn -> Rd + */ +func opirr(ctxt *obj.Link, a obj.As) uint32 { + switch a { + /* op $addcon, Rn, Rd */ + case AMOVD, AADD: + return S64 | 0<<30 | 0<<29 | 0x11<<24 + + case ACMN, AADDS: + return S64 | 0<<30 | 1<<29 | 0x11<<24 + + case AMOVW, AADDW: + return S32 | 0<<30 | 0<<29 | 0x11<<24 + + case ACMNW, AADDSW: + return S32 | 0<<30 | 1<<29 | 0x11<<24 + + case ASUB: + return S64 | 1<<30 | 0<<29 | 0x11<<24 + + case ACMP, ASUBS: + return S64 | 1<<30 | 1<<29 | 0x11<<24 + + case ASUBW: + return S32 | 1<<30 | 0<<29 | 0x11<<24 + + case ACMPW, ASUBSW: + return S32 | 1<<30 | 1<<29 | 0x11<<24 + + /* op $imm(SB), Rd; op label, Rd */ + case AADR: + return 0<<31 | 0x10<<24 + + case AADRP: + return 1<<31 | 0x10<<24 + + /* op $bimm, Rn, Rd */ + case AAND, ABIC: + return S64 | 0<<29 | 0x24<<23 + + case AANDW, ABICW: + return S32 | 0<<29 | 0x24<<23 | 0<<22 + + case AORR, AORN: + return S64 | 1<<29 | 0x24<<23 + + case AORRW, AORNW: + return S32 | 1<<29 | 0x24<<23 | 0<<22 + + case AEOR, AEON: + return S64 | 2<<29 | 0x24<<23 + + case AEORW, AEONW: + return S32 | 2<<29 | 0x24<<23 | 0<<22 + + case AANDS, ABICS: + return S64 | 3<<29 | 0x24<<23 + + case AANDSW, ABICSW: + return S32 | 3<<29 | 0x24<<23 | 0<<22 + + case AASR: + return S64 | 0<<29 | 0x26<<23 /* alias of SBFM */ + + case AASRW: + return S32 | 0<<29 | 0x26<<23 | 0<<22 + + /* op $width, $lsb, Rn, Rd */ + case ABFI: + return S64 | 2<<29 | 0x26<<23 | 1<<22 + /* alias of BFM */ + + case ABFIW: + return S32 | 2<<29 | 0x26<<23 | 0<<22 + + /* op $imms, $immr, Rn, Rd */ + case ABFM: + return S64 | 1<<29 | 0x26<<23 | 1<<22 + + case ABFMW: + return S32 | 1<<29 | 0x26<<23 | 0<<22 + + case ASBFM: + return S64 | 0<<29 | 0x26<<23 | 1<<22 + + case ASBFMW: + return S32 | 0<<29 | 0x26<<23 | 0<<22 + + case AUBFM: + return S64 | 2<<29 | 0x26<<23 | 1<<22 + + case AUBFMW: + return S32 | 2<<29 | 0x26<<23 | 0<<22 + + case ABFXIL: + return S64 | 1<<29 | 0x26<<23 | 1<<22 /* alias of BFM */ + + case ABFXILW: + return S32 | 1<<29 | 0x26<<23 | 0<<22 + + case AEXTR: + return S64 | 0<<29 | 0x27<<23 | 1<<22 | 0<<21 + + case AEXTRW: + return S32 | 0<<29 | 0x27<<23 | 0<<22 | 0<<21 + + case ACBNZ: + return S64 | 0x1A<<25 | 1<<24 + + case ACBNZW: + return S32 | 0x1A<<25 | 1<<24 + + case ACBZ: + return S64 | 0x1A<<25 | 0<<24 + + case ACBZW: + return S32 | 0x1A<<25 | 0<<24 + + case ACCMN: + return S64 | 0<<30 | 1<<29 | 0xD2<<21 | 1<<11 | 0<<10 | 0<<4 /* imm5<<16 | cond<<12 | nzcv<<0 */ + + case ACCMNW: + return S32 | 0<<30 | 1<<29 | 0xD2<<21 | 1<<11 | 0<<10 | 0<<4 + + case ACCMP: + return S64 | 1<<30 | 1<<29 | 0xD2<<21 | 1<<11 | 0<<10 | 0<<4 /* imm5<<16 | cond<<12 | nzcv<<0 */ + + case ACCMPW: + return S32 | 1<<30 | 1<<29 | 0xD2<<21 | 1<<11 | 0<<10 | 0<<4 + + case AMOVK: + return S64 | 3<<29 | 0x25<<23 + + case AMOVKW: + return S32 | 3<<29 | 0x25<<23 + + case AMOVN: + return S64 | 0<<29 | 0x25<<23 + + case AMOVNW: + return S32 | 0<<29 | 0x25<<23 + + case AMOVZ: + return S64 | 2<<29 | 0x25<<23 + + case AMOVZW: + return S32 | 2<<29 | 0x25<<23 + + case AMSR: + return SYSOP(0, 0, 0, 4, 0, 0, 0x1F) /* MSR (immediate) */ + + case AAT, + ADC, + AIC, + ATLBI, + ASYS: + return SYSOP(0, 1, 0, 0, 0, 0, 0) + + case ASYSL: + return SYSOP(1, 1, 0, 0, 0, 0, 0) + + case ATBZ: + return 0x36 << 24 + + case ATBNZ: + return 0x37 << 24 + + case ADSB: + return SYSOP(0, 0, 3, 3, 0, 4, 0x1F) + + case ADMB: + return SYSOP(0, 0, 3, 3, 0, 5, 0x1F) + + case AISB: + return SYSOP(0, 0, 3, 3, 0, 6, 0x1F) + + case AHINT: + return SYSOP(0, 0, 3, 2, 0, 0, 0x1F) + } + + ctxt.Diag("bad irr %v", a) + prasm(ctxt.Curp) + return 0 +} + +func opbit(ctxt *obj.Link, a obj.As) uint32 { + switch a { + case ACLS: + return S64 | OPBIT(5) + + case ACLSW: + return S32 | OPBIT(5) + + case ACLZ: + return S64 | OPBIT(4) + + case ACLZW: + return S32 | OPBIT(4) + + case ARBIT: + return S64 | OPBIT(0) + + case ARBITW: + return S32 | OPBIT(0) + + case AREV: + return S64 | OPBIT(3) + + case AREVW: + return S32 | OPBIT(2) + + case AREV16: + return S64 | OPBIT(1) + + case AREV16W: + return S32 | OPBIT(1) + + case AREV32: + return S64 | OPBIT(2) + + default: + ctxt.Diag("bad bit op\n%v", ctxt.Curp) + return 0 + } +} + +/* + * add/subtract extended register + */ +func opxrrr(ctxt *obj.Link, a obj.As) uint32 { + switch a { + case AADD: + return S64 | 0<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_64 + + case AADDW: + return S32 | 0<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_32 + + case ACMN, AADDS: + return S64 | 0<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_64 + + case ACMNW, AADDSW: + return S32 | 0<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_32 + + case ASUB: + return S64 | 1<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_64 + + case ASUBW: + return S32 | 1<<30 | 0<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_32 + + case ACMP, ASUBS: + return S64 | 1<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_64 + + case ACMPW, ASUBSW: + return S32 | 1<<30 | 1<<29 | 0x0b<<24 | 0<<22 | 1<<21 | LSL0_32 + } + + ctxt.Diag("bad opxrrr %v\n%v", a, ctxt.Curp) + return 0 +} + +func opimm(ctxt *obj.Link, a obj.As) uint32 { + switch a { + case ASVC: + return 0xD4<<24 | 0<<21 | 1 /* imm16<<5 */ + + case AHVC: + return 0xD4<<24 | 0<<21 | 2 + + case ASMC: + return 0xD4<<24 | 0<<21 | 3 + + case ABRK: + return 0xD4<<24 | 1<<21 | 0 + + case AHLT: + return 0xD4<<24 | 2<<21 | 0 + + case ADCPS1: + return 0xD4<<24 | 5<<21 | 1 + + case ADCPS2: + return 0xD4<<24 | 5<<21 | 2 + + case ADCPS3: + return 0xD4<<24 | 5<<21 | 3 + + case ACLREX: + return SYSOP(0, 0, 3, 3, 0, 2, 0x1F) + } + + ctxt.Diag("bad imm %v", a) + prasm(ctxt.Curp) + return 0 +} + +func brdist(ctxt *obj.Link, p *obj.Prog, preshift int, flen int, shift int) int64 { + v := int64(0) + t := int64(0) + if p.Pcond != nil { + v = (p.Pcond.Pc >> uint(preshift)) - (ctxt.Pc >> uint(preshift)) + if (v & ((1 << uint(shift)) - 1)) != 0 { + ctxt.Diag("misaligned label\n%v", p) + } + v >>= uint(shift) + t = int64(1) << uint(flen-1) + if v < -t || v >= t { + ctxt.Diag("branch too far %#x vs %#x [%p]\n%v\n%v", v, t, ctxt.Blitrl, p, p.Pcond) + panic("branch too far") + } + } + + return v & ((t << 1) - 1) +} + +/* + * pc-relative branches + */ +func opbra(ctxt *obj.Link, a obj.As) uint32 { + switch a { + case ABEQ: + return OPBcc(0x0) + + case ABNE: + return OPBcc(0x1) + + case ABCS: + return OPBcc(0x2) + + case ABHS: + return OPBcc(0x2) + + case ABCC: + return OPBcc(0x3) + + case ABLO: + return OPBcc(0x3) + + case ABMI: + return OPBcc(0x4) + + case ABPL: + return OPBcc(0x5) + + case ABVS: + return OPBcc(0x6) + + case ABVC: + return OPBcc(0x7) + + case ABHI: + return OPBcc(0x8) + + case ABLS: + return OPBcc(0x9) + + case ABGE: + return OPBcc(0xa) + + case ABLT: + return OPBcc(0xb) + + case ABGT: + return OPBcc(0xc) + + case ABLE: + return OPBcc(0xd) /* imm19<<5 | cond */ + + case AB: + return 0<<31 | 5<<26 /* imm26 */ + + case obj.ADUFFZERO, obj.ADUFFCOPY, ABL: + return 1<<31 | 5<<26 + } + + ctxt.Diag("bad bra %v", a) + prasm(ctxt.Curp) + return 0 +} + +func opbrr(ctxt *obj.Link, a obj.As) uint32 { + switch a { + case ABL: + return OPBLR(1) /* BLR */ + + case AB: + return OPBLR(0) /* BR */ + + case obj.ARET: + return OPBLR(2) /* RET */ + } + + ctxt.Diag("bad brr %v", a) + prasm(ctxt.Curp) + return 0 +} + +func op0(ctxt *obj.Link, a obj.As) uint32 { + switch a { + case ADRPS: + return 0x6B<<25 | 5<<21 | 0x1F<<16 | 0x1F<<5 + + case AERET: + return 0x6B<<25 | 4<<21 | 0x1F<<16 | 0<<10 | 0x1F<<5 + + // case ANOP: + // return SYSHINT(0) + + case AYIELD: + return SYSHINT(1) + + case AWFE: + return SYSHINT(2) + + case AWFI: + return SYSHINT(3) + + case ASEV: + return SYSHINT(4) + + case ASEVL: + return SYSHINT(5) + } + + ctxt.Diag("bad op0 %v", a) + prasm(ctxt.Curp) + return 0 +} + +/* + * register offset + */ +func opload(ctxt *obj.Link, a obj.As) uint32 { + switch a { + case ALDAR: + return LDSTX(3, 1, 1, 0, 1) | 0x1F<<10 + + case ALDARW: + return LDSTX(2, 1, 1, 0, 1) | 0x1F<<10 + + case ALDARB: + return LDSTX(0, 1, 1, 0, 1) | 0x1F<<10 + + case ALDARH: + return LDSTX(1, 1, 1, 0, 1) | 0x1F<<10 + + case ALDAXP: + return LDSTX(3, 0, 1, 1, 1) + + case ALDAXPW: + return LDSTX(2, 0, 1, 1, 1) + + case ALDAXR: + return LDSTX(3, 0, 1, 0, 1) | 0x1F<<10 + + case ALDAXRW: + return LDSTX(2, 0, 1, 0, 1) | 0x1F<<10 + + case ALDAXRB: + return LDSTX(0, 0, 1, 0, 1) | 0x1F<<10 + + case ALDAXRH: + return LDSTX(1, 0, 1, 0, 1) | 0x1F<<10 + + case ALDXR: + return LDSTX(3, 0, 1, 0, 0) | 0x1F<<10 + + case ALDXRB: + return LDSTX(0, 0, 1, 0, 0) | 0x1F<<10 + + case ALDXRH: + return LDSTX(1, 0, 1, 0, 0) | 0x1F<<10 + + case ALDXRW: + return LDSTX(2, 0, 1, 0, 0) | 0x1F<<10 + + case ALDXP: + return LDSTX(3, 0, 1, 1, 0) + + case ALDXPW: + return LDSTX(2, 0, 1, 1, 0) + + case AMOVNP: + return S64 | 0<<30 | 5<<27 | 0<<26 | 0<<23 | 1<<22 + + case AMOVNPW: + return S32 | 0<<30 | 5<<27 | 0<<26 | 0<<23 | 1<<22 + } + + ctxt.Diag("bad opload %v\n%v", a, ctxt.Curp) + return 0 +} + +func opstore(ctxt *obj.Link, a obj.As) uint32 { + switch a { + case ASTLR: + return LDSTX(3, 1, 0, 0, 1) | 0x1F<<10 + + case ASTLRB: + return LDSTX(0, 1, 0, 0, 1) | 0x1F<<10 + + case ASTLRH: + return LDSTX(1, 1, 0, 0, 1) | 0x1F<<10 + + case ASTLP: + return LDSTX(3, 0, 0, 1, 1) + + case ASTLPW: + return LDSTX(2, 0, 0, 1, 1) + + case ASTLRW: + return LDSTX(2, 1, 0, 0, 1) | 0x1F<<10 + + case ASTLXP: + return LDSTX(2, 0, 0, 1, 1) + + case ASTLXPW: + return LDSTX(3, 0, 0, 1, 1) + + case ASTLXR: + return LDSTX(3, 0, 0, 0, 1) | 0x1F<<10 + + case ASTLXRB: + return LDSTX(0, 0, 0, 0, 1) | 0x1F<<10 + + case ASTLXRH: + return LDSTX(1, 0, 0, 0, 1) | 0x1F<<10 + + case ASTLXRW: + return LDSTX(2, 0, 0, 0, 1) | 0x1F<<10 + + case ASTXR: + return LDSTX(3, 0, 0, 0, 0) | 0x1F<<10 + + case ASTXRB: + return LDSTX(0, 0, 0, 0, 0) | 0x1F<<10 + + case ASTXRH: + return LDSTX(1, 0, 0, 0, 0) | 0x1F<<10 + + case ASTXP: + return LDSTX(3, 0, 0, 1, 0) + + case ASTXPW: + return LDSTX(2, 0, 0, 1, 0) + + case ASTXRW: + return LDSTX(2, 0, 0, 0, 0) | 0x1F<<10 + + case AMOVNP: + return S64 | 0<<30 | 5<<27 | 0<<26 | 0<<23 | 1<<22 + + case AMOVNPW: + return S32 | 0<<30 | 5<<27 | 0<<26 | 0<<23 | 1<<22 + } + + ctxt.Diag("bad opstore %v\n%v", a, ctxt.Curp) + return 0 +} + +/* + * load/store register (unsigned immediate) C3.3.13 + * these produce 64-bit values (when there's an option) + */ +func olsr12u(ctxt *obj.Link, o int32, v int32, b int, r int) uint32 { + if v < 0 || v >= (1<<12) { + ctxt.Diag("offset out of range: %d\n%v", v, ctxt.Curp) + } + o |= (v & 0xFFF) << 10 + o |= int32(b&31) << 5 + o |= int32(r & 31) + return uint32(o) +} + +func opldr12(ctxt *obj.Link, a obj.As) uint32 { + switch a { + case AMOVD: + return LDSTR12U(3, 0, 1) /* imm12<<10 | Rn<<5 | Rt */ + + case AMOVW: + return LDSTR12U(2, 0, 2) + + case AMOVWU: + return LDSTR12U(2, 0, 1) + + case AMOVH: + return LDSTR12U(1, 0, 2) + + case AMOVHU: + return LDSTR12U(1, 0, 1) + + case AMOVB: + return LDSTR12U(0, 0, 2) + + case AMOVBU: + return LDSTR12U(0, 0, 1) + + case AFMOVS: + return LDSTR12U(2, 1, 1) + + case AFMOVD: + return LDSTR12U(3, 1, 1) + } + + ctxt.Diag("bad opldr12 %v\n%v", a, ctxt.Curp) + return 0 +} + +func opstr12(ctxt *obj.Link, a obj.As) uint32 { + return LD2STR(opldr12(ctxt, a)) +} + +/* + * load/store register (unscaled immediate) C3.3.12 + */ +func olsr9s(ctxt *obj.Link, o int32, v int32, b int, r int) uint32 { + if v < -256 || v > 255 { + ctxt.Diag("offset out of range: %d\n%v", v, ctxt.Curp) + } + o |= (v & 0x1FF) << 12 + o |= int32(b&31) << 5 + o |= int32(r & 31) + return uint32(o) +} + +func opldr9(ctxt *obj.Link, a obj.As) uint32 { + switch a { + case AMOVD: + return LDSTR9S(3, 0, 1) /* simm9<<12 | Rn<<5 | Rt */ + + case AMOVW: + return LDSTR9S(2, 0, 2) + + case AMOVWU: + return LDSTR9S(2, 0, 1) + + case AMOVH: + return LDSTR9S(1, 0, 2) + + case AMOVHU: + return LDSTR9S(1, 0, 1) + + case AMOVB: + return LDSTR9S(0, 0, 2) + + case AMOVBU: + return LDSTR9S(0, 0, 1) + + case AFMOVS: + return LDSTR9S(2, 1, 1) + + case AFMOVD: + return LDSTR9S(3, 1, 1) + } + + ctxt.Diag("bad opldr9 %v\n%v", a, ctxt.Curp) + return 0 +} + +func opstr9(ctxt *obj.Link, a obj.As) uint32 { + return LD2STR(opldr9(ctxt, a)) +} + +func opldrpp(ctxt *obj.Link, a obj.As) uint32 { + switch a { + case AMOVD: + return 3<<30 | 7<<27 | 0<<26 | 0<<24 | 1<<22 /* simm9<<12 | Rn<<5 | Rt */ + + case AMOVW: + return 2<<30 | 7<<27 | 0<<26 | 0<<24 | 2<<22 + + case AMOVWU: + return 2<<30 | 7<<27 | 0<<26 | 0<<24 | 1<<22 + + case AMOVH: + return 1<<30 | 7<<27 | 0<<26 | 0<<24 | 2<<22 + + case AMOVHU: + return 1<<30 | 7<<27 | 0<<26 | 0<<24 | 1<<22 + + case AMOVB: + return 0<<30 | 7<<27 | 0<<26 | 0<<24 | 2<<22 + + case AMOVBU: + return 0<<30 | 7<<27 | 0<<26 | 0<<24 | 1<<22 + } + + ctxt.Diag("bad opldr %v\n%v", a, ctxt.Curp) + return 0 +} + +/* + * load/store register (extended register) + */ +func olsxrr(ctxt *obj.Link, as obj.As, rt int, r1 int, r2 int) uint32 { + ctxt.Diag("need load/store extended register\n%v", ctxt.Curp) + return 0xffffffff +} + +func oaddi(ctxt *obj.Link, o1 int32, v int32, r int, rt int) uint32 { + if (v & 0xFFF000) != 0 { + if v&0xFFF != 0 { + ctxt.Diag("%v misuses oaddi", ctxt.Curp) + } + v >>= 12 + o1 |= 1 << 22 + } + + o1 |= ((v & 0xFFF) << 10) | (int32(r&31) << 5) | int32(rt&31) + return uint32(o1) +} + +/* + * load a a literal value into dr + */ +func omovlit(ctxt *obj.Link, as obj.As, p *obj.Prog, a *obj.Addr, dr int) uint32 { + var o1 int32 + if p.Pcond == nil { /* not in literal pool */ + aclass(ctxt, a) + ctxt.Logf("omovlit add %d (%#x)\n", ctxt.Instoffset, uint64(ctxt.Instoffset)) + + /* TODO: could be clever, and use general constant builder */ + o1 = int32(opirr(ctxt, AADD)) + + v := int32(ctxt.Instoffset) + if v != 0 && (v&0xFFF) == 0 { + v >>= 12 + o1 |= 1 << 22 /* shift, by 12 */ + } + + o1 |= ((v & 0xFFF) << 10) | (REGZERO & 31 << 5) | int32(dr&31) + } else { + fp := 0 + w := 0 /* default: 32 bit, unsigned */ + switch as { + case AFMOVS: + fp = 1 + + case AFMOVD: + fp = 1 + w = 1 /* 64 bit simd&fp */ + + case AMOVD: + if p.Pcond.As == ADWORD { + w = 1 /* 64 bit */ + } else if p.Pcond.To.Offset < 0 { + w = 2 /* sign extend */ + } + + case AMOVB, AMOVH, AMOVW: + w = 2 /* 32 bit, sign-extended to 64 */ + break + } + + v := int32(brdist(ctxt, p, 0, 19, 2)) + o1 = (int32(w) << 30) | (int32(fp) << 26) | (3 << 27) + o1 |= (v & 0x7FFFF) << 5 + o1 |= int32(dr & 31) + } + + return uint32(o1) +} + +// load a constant (MOVCON or BITCON) in a into rt +func omovconst(ctxt *obj.Link, as obj.As, p *obj.Prog, a *obj.Addr, rt int) (o1 uint32) { + if c := oclass(a); c == C_BITCON || c == C_ABCON || c == C_ABCON0 { + // or $bitcon, REGZERO, rt + mode := 64 + var as1 obj.As + switch as { + case AMOVW: + as1 = AORRW + mode = 32 + case AMOVD: + as1 = AORR + } + o1 = opirr(ctxt, as1) + o1 |= bitconEncode(uint64(a.Offset), mode) | uint32(REGZERO&31)<<5 | uint32(rt&31) + return o1 + } + + r := 32 + if as == AMOVD { + r = 64 + } + d := a.Offset + s := movcon(d) + if s < 0 || s >= r { + d = ^d + s = movcon(d) + if s < 0 || s >= r { + ctxt.Diag("impossible move wide: %#x\n%v", uint64(a.Offset), p) + } + if as == AMOVD { + o1 = opirr(ctxt, AMOVN) + } else { + o1 = opirr(ctxt, AMOVNW) + } + } else { + if as == AMOVD { + o1 = opirr(ctxt, AMOVZ) + } else { + o1 = opirr(ctxt, AMOVZW) + } + } + o1 |= uint32((((d >> uint(s*16)) & 0xFFFF) << 5) | int64((uint32(s)&3)<<21) | int64(rt&31)) + return o1 +} + +func opbfm(ctxt *obj.Link, a obj.As, r int, s int, rf int, rt int) uint32 { + var c uint32 + o := opirr(ctxt, a) + if (o & (1 << 31)) == 0 { + c = 32 + } else { + c = 64 + } + if r < 0 || uint32(r) >= c { + ctxt.Diag("illegal bit number\n%v", ctxt.Curp) + } + o |= (uint32(r) & 0x3F) << 16 + if s < 0 || uint32(s) >= c { + ctxt.Diag("illegal bit number\n%v", ctxt.Curp) + } + o |= (uint32(s) & 0x3F) << 10 + o |= (uint32(rf&31) << 5) | uint32(rt&31) + return o +} + +func opextr(ctxt *obj.Link, a obj.As, v int32, rn int, rm int, rt int) uint32 { + var c uint32 + o := opirr(ctxt, a) + if (o & (1 << 31)) != 0 { + c = 63 + } else { + c = 31 + } + if v < 0 || uint32(v) > c { + ctxt.Diag("illegal bit number\n%v", ctxt.Curp) + } + o |= uint32(v) << 10 + o |= uint32(rn&31) << 5 + o |= uint32(rm&31) << 16 + o |= uint32(rt & 31) + return o +} + +/* + * size in log2(bytes) + */ +func movesize(a obj.As) int { + switch a { + case AMOVD: + return 3 + + case AMOVW, AMOVWU: + return 2 + + case AMOVH, AMOVHU: + return 1 + + case AMOVB, AMOVBU: + return 0 + + case AFMOVS: + return 2 + + case AFMOVD: + return 3 + + default: + return -1 + } +} |