cmd/internal/obj/loong64, cmd/internal/objabi, cmd/link: add support for...

cmd/internal/obj/loong64, cmd/internal/objabi, cmd/link: add support for --buildmode=c-shared on loong64

Updates #53301
Updates #58784

Change-Id: Ifcb40871f609531dfd8b568db9ac14da9b451742
Reviewed-on: https://go-review.googlesource.com/c/go/+/425476


Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Run-TryBot: WANG Xuerui <git@xen0n.name>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: WANG Xuerui <git@xen0n.name>

src/cmd/internal/obj/loong64/a.out.go

@@ -225,7 +225,8 @@ const (
 	C_LOREG
 	C_GOK
 	C_ADDR
-	C_TLS
+	C_TLS_LE
+	C_TLS_IE
 	C_TEXTSIZE
 
 	C_NCLASS // must be the last

src/cmd/internal/obj/loong64/asm.go

@@ -161,11 +161,11 @@ var optab = []Optab{
 	{AMOVB, C_REG, C_NONE, C_NONE, C_ADDR, C_NONE, 50, 8, 0, 0},
 	{AMOVBU, C_REG, C_NONE, C_NONE, C_ADDR, C_NONE, 50, 8, 0, 0},
 	{AMOVBU, C_REG, C_NONE, C_NONE, C_ADDR, C_NONE, 50, 8, 0, 0},
-	{AMOVW, C_REG, C_NONE, C_NONE, C_TLS, C_NONE, 53, 16, 0, 0},
-	{AMOVWU, C_REG, C_NONE, C_NONE, C_TLS, C_NONE, 53, 16, 0, 0},
-	{AMOVV, C_REG, C_NONE, C_NONE, C_TLS, C_NONE, 53, 16, 0, 0},
-	{AMOVB, C_REG, C_NONE, C_NONE, C_TLS, C_NONE, 53, 16, 0, 0},
-	{AMOVBU, C_REG, C_NONE, C_NONE, C_TLS, C_NONE, 53, 16, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_NONE, C_TLS_LE, C_NONE, 53, 16, 0, 0},
+	{AMOVWU, C_REG, C_NONE, C_NONE, C_TLS_LE, C_NONE, 53, 16, 0, 0},
+	{AMOVV, C_REG, C_NONE, C_NONE, C_TLS_LE, C_NONE, 53, 16, 0, 0},
+	{AMOVB, C_REG, C_NONE, C_NONE, C_TLS_LE, C_NONE, 53, 16, 0, 0},
+	{AMOVBU, C_REG, C_NONE, C_NONE, C_TLS_LE, C_NONE, 53, 16, 0, 0},
 
 	{AMOVW, C_LEXT, C_NONE, C_NONE, C_REG, C_NONE, 36, 12, 0, 0},
 	{AMOVWU, C_LEXT, C_NONE, C_NONE, C_REG, C_NONE, 36, 12, 0, 0},
@@ -190,11 +190,11 @@ var optab = []Optab{
 	{AMOVB, C_ADDR, C_NONE, C_NONE, C_REG, C_NONE, 51, 8, 0, 0},
 	{AMOVBU, C_ADDR, C_NONE, C_NONE, C_REG, C_NONE, 51, 8, 0, 0},
 	{AMOVBU, C_ADDR, C_NONE, C_NONE, C_REG, C_NONE, 51, 8, 0, 0},
-	{AMOVW, C_TLS, C_NONE, C_NONE, C_REG, C_NONE, 54, 16, 0, 0},
-	{AMOVWU, C_TLS, C_NONE, C_NONE, C_REG, C_NONE, 54, 16, 0, 0},
-	{AMOVV, C_TLS, C_NONE, C_NONE, C_REG, C_NONE, 54, 16, 0, 0},
-	{AMOVB, C_TLS, C_NONE, C_NONE, C_REG, C_NONE, 54, 16, 0, 0},
-	{AMOVBU, C_TLS, C_NONE, C_NONE, C_REG, C_NONE, 54, 16, 0, 0},
+	{AMOVW, C_TLS_LE, C_NONE, C_NONE, C_REG, C_NONE, 54, 16, 0, 0},
+	{AMOVWU, C_TLS_LE, C_NONE, C_NONE, C_REG, C_NONE, 54, 16, 0, 0},
+	{AMOVV, C_TLS_LE, C_NONE, C_NONE, C_REG, C_NONE, 54, 16, 0, 0},
+	{AMOVB, C_TLS_LE, C_NONE, C_NONE, C_REG, C_NONE, 54, 16, 0, 0},
+	{AMOVBU, C_TLS_LE, C_NONE, C_NONE, C_REG, C_NONE, 54, 16, 0, 0},
 
 	{AMOVW, C_SECON, C_NONE, C_NONE, C_REG, C_NONE, 3, 4, 0, 0},
 	{AMOVV, C_SECON, C_NONE, C_NONE, C_REG, C_NONE, 3, 4, 0, 0},
@@ -334,6 +334,18 @@ var optab = []Optab{
 	{AMOVW, C_ADDCON, C_NONE, C_NONE, C_FREG, C_NONE, 34, 8, 0, 0},
 	{AMOVW, C_ANDCON, C_NONE, C_NONE, C_FREG, C_NONE, 34, 8, 0, 0},
 
+	{AMOVB, C_REG, C_NONE, C_NONE, C_TLS_IE, C_NONE, 56, 16, 0, 0},
+	{AMOVW, C_REG, C_NONE, C_NONE, C_TLS_IE, C_NONE, 56, 16, 0, 0},
+	{AMOVV, C_REG, C_NONE, C_NONE, C_TLS_IE, C_NONE, 56, 16, 0, 0},
+	{AMOVBU, C_REG, C_NONE, C_NONE, C_TLS_IE, C_NONE, 56, 16, 0, 0},
+	{AMOVWU, C_REG, C_NONE, C_NONE, C_TLS_IE, C_NONE, 56, 16, 0, 0},
+
+	{AMOVB, C_TLS_IE, C_NONE, C_NONE, C_REG, C_NONE, 57, 16, 0, 0},
+	{AMOVW, C_TLS_IE, C_NONE, C_NONE, C_REG, C_NONE, 57, 16, 0, 0},
+	{AMOVV, C_TLS_IE, C_NONE, C_NONE, C_REG, C_NONE, 57, 16, 0, 0},
+	{AMOVBU, C_TLS_IE, C_NONE, C_NONE, C_REG, C_NONE, 57, 16, 0, 0},
+	{AMOVWU, C_TLS_IE, C_NONE, C_NONE, C_REG, C_NONE, 57, 16, 0, 0},
+
 	{AWORD, C_LCON, C_NONE, C_NONE, C_NONE, C_NONE, 40, 4, 0, 0},
 	{AWORD, C_DCON, C_NONE, C_NONE, C_NONE, C_NONE, 61, 4, 0, 0},
 
@@ -621,7 +633,11 @@ func (c *ctxt0) aclass(a *obj.Addr) int {
 			c.instoffset = a.Offset
 			if a.Sym != nil { // use relocation
 				if a.Sym.Type == objabi.STLSBSS {
-					return C_TLS
+					if c.ctxt.Flag_shared {
+						return C_TLS_IE
+					} else {
+						return C_TLS_LE
+					}
 				}
 				return C_ADDR
 			}
@@ -1689,6 +1705,42 @@ func (c *ctxt0) asmout(p *obj.Prog, o *Optab, out []uint32) {
 		rel2.Type = objabi.R_ADDRLOONG64TLS
 		o3 = OP_RRR(c.oprrr(AADDV), uint32(REG_R2), uint32(REGTMP), uint32(p.To.Reg))
 
+	case 56: // mov r, tlsvar IE model ==> (pcalau12i + ld.d)tlsvar@got + add.d + st.d
+		o1 = OP_IR(c.opir(APCALAU12I), uint32(0), uint32(REGTMP))
+		rel := obj.Addrel(c.cursym)
+		rel.Off = int32(c.pc)
+		rel.Siz = 4
+		rel.Sym = p.To.Sym
+		rel.Add = 0x0
+		rel.Type = objabi.R_LOONG64_TLS_IE_PCREL_HI
+		o2 = OP_12IRR(c.opirr(-p.As), uint32(0), uint32(REGTMP), uint32(REGTMP))
+		rel2 := obj.Addrel(c.cursym)
+		rel2.Off = int32(c.pc + 4)
+		rel2.Siz = 4
+		rel2.Sym = p.To.Sym
+		rel2.Add = 0x0
+		rel2.Type = objabi.R_LOONG64_TLS_IE_LO
+		o3 = OP_RRR(c.oprrr(AADDVU), uint32(REGTMP), uint32(REG_R2), uint32(REGTMP))
+		o4 = OP_12IRR(c.opirr(p.As), uint32(0), uint32(REGTMP), uint32(p.From.Reg))
+
+	case 57: // mov tlsvar, r IE model ==> (pcalau12i + ld.d)tlsvar@got + add.d + ld.d
+		o1 = OP_IR(c.opir(APCALAU12I), uint32(0), uint32(REGTMP))
+		rel := obj.Addrel(c.cursym)
+		rel.Off = int32(c.pc)
+		rel.Siz = 4
+		rel.Sym = p.From.Sym
+		rel.Add = 0x0
+		rel.Type = objabi.R_LOONG64_TLS_IE_PCREL_HI
+		o2 = OP_12IRR(c.opirr(-p.As), uint32(0), uint32(REGTMP), uint32(REGTMP))
+		rel2 := obj.Addrel(c.cursym)
+		rel2.Off = int32(c.pc + 4)
+		rel2.Siz = 4
+		rel2.Sym = p.From.Sym
+		rel2.Add = 0x0
+		rel2.Type = objabi.R_LOONG64_TLS_IE_LO
+		o3 = OP_RRR(c.oprrr(AADDVU), uint32(REGTMP), uint32(REG_R2), uint32(REGTMP))
+		o4 = OP_12IRR(c.opirr(-p.As), uint32(0), uint32(REGTMP), uint32(p.To.Reg))
+
 	case 59: // mov $dcon,r
 		// NOTE: this case does not use REGTMP. If it ever does,
 		// remove the NOTUSETMP flag in optab.

src/cmd/internal/obj/loong64/cnames.go

@@ -37,7 +37,8 @@ var cnames0 = []string{
 	"LOREG",
 	"GOK",
 	"ADDR",
-	"TLS",
+	"TLS_LE",
+	"TLS_IE",
 	"TEXTSIZE",
 	"NCLASS",
 }

src/cmd/internal/objabi/reloctype.go

@@ -310,6 +310,11 @@ const (
 	// instruction, by encoding the address into the instruction.
 	R_CALLLOONG64
 
+	// R_LOONG64_TLS_IE_PCREL_HI and R_LOONG64_TLS_IE_LO relocates a pcalau12i, ld.d
+	// pair to compute the address of the GOT slot of the tls symbol.
+	R_LOONG64_TLS_IE_PCREL_HI
+	R_LOONG64_TLS_IE_LO
+
 	// R_JMPLOONG64 resolves to non-PC-relative target address of a JMP instruction,
 	// by encoding the address into the instruction.
 	R_JMPLOONG64

src/cmd/internal/objabi/reloctype_string.go

@@ -79,18 +79,20 @@ func _() {
 	_ = x[R_ADDRLOONG64TLS-69]
 	_ = x[R_ADDRLOONG64TLSU-70]
 	_ = x[R_CALLLOONG64-71]
-	_ = x[R_JMPLOONG64-72]
-	_ = x[R_ADDRMIPSU-73]
-	_ = x[R_ADDRMIPSTLS-74]
-	_ = x[R_ADDRCUOFF-75]
-	_ = x[R_WASMIMPORT-76]
-	_ = x[R_XCOFFREF-77]
-	_ = x[R_PEIMAGEOFF-78]
+	_ = x[R_LOONG64_TLS_IE_PCREL_HI-72]
+	_ = x[R_LOONG64_TLS_IE_LO-73]
+	_ = x[R_JMPLOONG64-74]
+	_ = x[R_ADDRMIPSU-75]
+	_ = x[R_ADDRMIPSTLS-76]
+	_ = x[R_ADDRCUOFF-77]
+	_ = x[R_WASMIMPORT-78]
+	_ = x[R_XCOFFREF-79]
+	_ = x[R_PEIMAGEOFF-80]
 }
 
-const _RelocType_name = "R_ADDRR_ADDRPOWERR_ADDRARM64R_ADDRMIPSR_ADDROFFR_SIZER_CALLR_CALLARMR_CALLARM64R_CALLINDR_CALLPOWERR_CALLMIPSR_CONSTR_PCRELR_TLS_LER_TLS_IER_GOTOFFR_PLT0R_PLT1R_PLT2R_USEFIELDR_USETYPER_USEIFACER_USEIFACEMETHODR_USEGENERICIFACEMETHODR_METHODOFFR_KEEPR_POWER_TOCR_GOTPCRELR_JMPMIPSR_DWARFSECREFR_DWARFFILEREFR_ARM64_TLS_LER_ARM64_TLS_IER_ARM64_GOTPCRELR_ARM64_GOTR_ARM64_PCRELR_ARM64_PCREL_LDST8R_ARM64_PCREL_LDST16R_ARM64_PCREL_LDST32R_ARM64_PCREL_LDST64R_ARM64_LDST8R_ARM64_LDST16R_ARM64_LDST32R_ARM64_LDST64R_ARM64_LDST128R_POWER_TLS_LER_POWER_TLS_IER_POWER_TLSR_POWER_TLS_IE_PCREL34R_POWER_TLS_LE_TPREL34R_ADDRPOWER_DSR_ADDRPOWER_GOTR_ADDRPOWER_GOT_PCREL34R_ADDRPOWER_PCRELR_ADDRPOWER_TOCRELR_ADDRPOWER_TOCREL_DSR_ADDRPOWER_D34R_ADDRPOWER_PCREL34R_RISCV_CALLR_RISCV_CALL_TRAMPR_RISCV_PCREL_ITYPER_RISCV_PCREL_STYPER_RISCV_TLS_IE_ITYPER_RISCV_TLS_IE_STYPER_PCRELDBLR_ADDRLOONG64R_ADDRLOONG64UR_ADDRLOONG64TLSR_ADDRLOONG64TLSUR_CALLLOONG64R_JMPLOONG64R_ADDRMIPSUR_ADDRMIPSTLSR_ADDRCUOFFR_WASMIMPORTR_XCOFFREFR_PEIMAGEOFF"
+const _RelocType_name = "R_ADDRR_ADDRPOWERR_ADDRARM64R_ADDRMIPSR_ADDROFFR_SIZER_CALLR_CALLARMR_CALLARM64R_CALLINDR_CALLPOWERR_CALLMIPSR_CONSTR_PCRELR_TLS_LER_TLS_IER_GOTOFFR_PLT0R_PLT1R_PLT2R_USEFIELDR_USETYPER_USEIFACER_USEIFACEMETHODR_USEGENERICIFACEMETHODR_METHODOFFR_KEEPR_POWER_TOCR_GOTPCRELR_JMPMIPSR_DWARFSECREFR_DWARFFILEREFR_ARM64_TLS_LER_ARM64_TLS_IER_ARM64_GOTPCRELR_ARM64_GOTR_ARM64_PCRELR_ARM64_PCREL_LDST8R_ARM64_PCREL_LDST16R_ARM64_PCREL_LDST32R_ARM64_PCREL_LDST64R_ARM64_LDST8R_ARM64_LDST16R_ARM64_LDST32R_ARM64_LDST64R_ARM64_LDST128R_POWER_TLS_LER_POWER_TLS_IER_POWER_TLSR_POWER_TLS_IE_PCREL34R_POWER_TLS_LE_TPREL34R_ADDRPOWER_DSR_ADDRPOWER_GOTR_ADDRPOWER_GOT_PCREL34R_ADDRPOWER_PCRELR_ADDRPOWER_TOCRELR_ADDRPOWER_TOCREL_DSR_ADDRPOWER_D34R_ADDRPOWER_PCREL34R_RISCV_CALLR_RISCV_CALL_TRAMPR_RISCV_PCREL_ITYPER_RISCV_PCREL_STYPER_RISCV_TLS_IE_ITYPER_RISCV_TLS_IE_STYPER_PCRELDBLR_ADDRLOONG64R_ADDRLOONG64UR_ADDRLOONG64TLSR_ADDRLOONG64TLSUR_CALLLOONG64R_LOONG64_TLS_IE_PCREL_HIR_LOONG64_TLS_IE_LOR_JMPLOONG64R_ADDRMIPSUR_ADDRMIPSTLSR_ADDRCUOFFR_WASMIMPORTR_XCOFFREFR_PEIMAGEOFF"
 
-var _RelocType_index = [...]uint16{0, 6, 17, 28, 38, 47, 53, 59, 68, 79, 88, 99, 109, 116, 123, 131, 139, 147, 153, 159, 165, 175, 184, 194, 210, 233, 244, 250, 261, 271, 280, 293, 307, 321, 335, 351, 362, 375, 394, 414, 434, 454, 467, 481, 495, 509, 524, 538, 552, 563, 585, 607, 621, 636, 659, 676, 694, 715, 730, 749, 761, 779, 798, 817, 837, 857, 867, 880, 894, 910, 927, 940, 952, 963, 976, 987, 999, 1009, 1021}
+var _RelocType_index = [...]uint16{0, 6, 17, 28, 38, 47, 53, 59, 68, 79, 88, 99, 109, 116, 123, 131, 139, 147, 153, 159, 165, 175, 184, 194, 210, 233, 244, 250, 261, 271, 280, 293, 307, 321, 335, 351, 362, 375, 394, 414, 434, 454, 467, 481, 495, 509, 524, 538, 552, 563, 585, 607, 621, 636, 659, 676, 694, 715, 730, 749, 761, 779, 798, 817, 837, 857, 867, 880, 894, 910, 927, 940, 965, 984, 996, 1007, 1020, 1031, 1043, 1053, 1065}
 
 func (i RelocType) String() string {
 	i -= 1

src/cmd/link/internal/loong64/asm.go

@@ -59,6 +59,16 @@ func elfreloc1(ctxt *ld.Link, out *ld.OutBuf, ldr *loader.Loader, s loader.Sym,
 		out.Write64(uint64(elf.R_LARCH_B26) | uint64(elfsym)<<32)
 		out.Write64(uint64(r.Xadd))
 
+	case objabi.R_LOONG64_TLS_IE_PCREL_HI:
+		out.Write64(uint64(sectoff))
+		out.Write64(uint64(elf.R_LARCH_TLS_IE_PC_HI20) | uint64(elfsym)<<32)
+		out.Write64(uint64(0x0))
+
+	case objabi.R_LOONG64_TLS_IE_LO:
+		out.Write64(uint64(sectoff))
+		out.Write64(uint64(elf.R_LARCH_TLS_IE_PC_LO12) | uint64(elfsym)<<32)
+		out.Write64(uint64(0x0))
+
 	case objabi.R_ADDRLOONG64:
 		out.Write64(uint64(sectoff))
 		out.Write64(uint64(elf.R_LARCH_PCALA_LO12) | uint64(elfsym)<<32)
@@ -99,7 +109,9 @@ func archreloc(target *ld.Target, ldr *loader.Loader, syms *ld.ArchSyms, r loade
 		case objabi.R_ADDRLOONG64TLS,
 			objabi.R_ADDRLOONG64TLSU,
 			objabi.R_CALLLOONG64,
-			objabi.R_JMPLOONG64:
+			objabi.R_JMPLOONG64,
+			objabi.R_LOONG64_TLS_IE_PCREL_HI,
+			objabi.R_LOONG64_TLS_IE_LO:
 			return val, 1, true
 		}
 	}
@@ -152,7 +164,9 @@ func extreloc(target *ld.Target, ldr *loader.Loader, r loader.Reloc, s loader.Sy
 		objabi.R_CONST,
 		objabi.R_GOTOFF,
 		objabi.R_CALLLOONG64,
-		objabi.R_JMPLOONG64:
+		objabi.R_JMPLOONG64,
+		objabi.R_LOONG64_TLS_IE_PCREL_HI,
+		objabi.R_LOONG64_TLS_IE_LO:
 		return ld.ExtrelocSimple(ldr, r), true
 	}
 	return loader.ExtReloc{}, false