aboutsummaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/cmd/dist/buildtool.go1
-rw-r--r--src/cmd/internal/objabi/reloctype.go15
-rw-r--r--src/cmd/internal/objabi/reloctype_string.go4
-rw-r--r--src/cmd/link/internal/ld/config.go5
-rw-r--r--src/cmd/link/internal/ld/elf.go7
-rw-r--r--src/cmd/link/internal/riscv64/asm.go122
-rw-r--r--src/cmd/link/internal/riscv64/l.go14
-rw-r--r--src/cmd/link/internal/riscv64/obj.go60
-rw-r--r--src/cmd/link/main.go3
9 files changed, 225 insertions, 6 deletions
diff --git a/src/cmd/dist/buildtool.go b/src/cmd/dist/buildtool.go
index 788598873d..d30529bc5d 100644
--- a/src/cmd/dist/buildtool.go
+++ b/src/cmd/dist/buildtool.go
@@ -82,6 +82,7 @@ var bootstrapDirs = []string{
"cmd/link/internal/mips64",
"cmd/link/internal/objfile",
"cmd/link/internal/ppc64",
+ "cmd/link/internal/riscv64",
"cmd/link/internal/s390x",
"cmd/link/internal/sym",
"cmd/link/internal/x86",
diff --git a/src/cmd/internal/objabi/reloctype.go b/src/cmd/internal/objabi/reloctype.go
index aed7e2a74d..dc6482802a 100644
--- a/src/cmd/internal/objabi/reloctype.go
+++ b/src/cmd/internal/objabi/reloctype.go
@@ -64,6 +64,8 @@ const (
// R_CALLMIPS (only used on mips64) resolves to non-PC-relative target address
// of a CALL (JAL) instruction, by encoding the address into the instruction.
R_CALLMIPS
+ // R_CALLRISCV marks RISC-V CALLs for stack checking.
+ R_CALLRISCV
R_CONST
R_PCREL
// R_TLS_LE, used on 386, amd64, and ARM, resolves to the offset of the
@@ -200,6 +202,16 @@ const (
// relocated symbol rather than the symbol's address.
R_ADDRPOWER_TOCREL_DS
+ // RISC-V.
+
+ // R_RISCV_PCREL_ITYPE resolves a 32-bit PC-relative address using an
+ // AUIPC + I-type instruction pair.
+ R_RISCV_PCREL_ITYPE
+
+ // R_RISCV_PCREL_STYPE resolves a 32-bit PC-relative address using an
+ // AUIPC + S-type instruction pair.
+ R_RISCV_PCREL_STYPE
+
// R_PCRELDBL relocates s390x 2-byte aligned PC-relative addresses.
// TODO(mundaym): remove once variants can be serialized - see issue 14218.
R_PCRELDBL
@@ -210,6 +222,7 @@ const (
// R_ADDRMIPSTLS (only used on mips64) resolves to the low 16 bits of a TLS
// address (offset from thread pointer), by encoding it into the instruction.
R_ADDRMIPSTLS
+
// R_ADDRCUOFF resolves to a pointer-sized offset from the start of the
// symbol's DWARF compile unit.
R_ADDRCUOFF
@@ -230,7 +243,7 @@ const (
// the target address in register or memory.
func (r RelocType) IsDirectCall() bool {
switch r {
- case R_CALL, R_CALLARM, R_CALLARM64, R_CALLMIPS, R_CALLPOWER:
+ case R_CALL, R_CALLARM, R_CALLARM64, R_CALLMIPS, R_CALLPOWER, R_CALLRISCV:
return true
}
return false
diff --git a/src/cmd/internal/objabi/reloctype_string.go b/src/cmd/internal/objabi/reloctype_string.go
index a1c4c1aa51..83dfe71e07 100644
--- a/src/cmd/internal/objabi/reloctype_string.go
+++ b/src/cmd/internal/objabi/reloctype_string.go
@@ -4,9 +4,9 @@ package objabi
import "strconv"
-const _RelocType_name = "R_ADDRR_ADDRPOWERR_ADDRARM64R_ADDRMIPSR_ADDROFFR_WEAKADDROFFR_SIZER_CALLR_CALLARMR_CALLARM64R_CALLINDR_CALLPOWERR_CALLMIPSR_CONSTR_PCRELR_TLS_LER_TLS_IER_GOTOFFR_PLT0R_PLT1R_PLT2R_USEFIELDR_USETYPER_METHODOFFR_POWER_TOCR_GOTPCRELR_JMPMIPSR_DWARFSECREFR_DWARFFILEREFR_ARM64_TLS_LER_ARM64_TLS_IER_ARM64_GOTPCRELR_ARM64_GOTR_ARM64_PCRELR_ARM64_LDST8R_ARM64_LDST32R_ARM64_LDST64R_ARM64_LDST128R_POWER_TLS_LER_POWER_TLS_IER_POWER_TLSR_ADDRPOWER_DSR_ADDRPOWER_GOTR_ADDRPOWER_PCRELR_ADDRPOWER_TOCRELR_ADDRPOWER_TOCREL_DSR_PCRELDBLR_ADDRMIPSUR_ADDRMIPSTLSR_ADDRCUOFFR_WASMIMPORTR_XCOFFREF"
+const _RelocType_name = "R_ADDRR_ADDRPOWERR_ADDRARM64R_ADDRMIPSR_ADDROFFR_WEAKADDROFFR_SIZER_CALLR_CALLARMR_CALLARM64R_CALLINDR_CALLPOWERR_CALLMIPSR_CALLRISCVR_CONSTR_PCRELR_TLS_LER_TLS_IER_GOTOFFR_PLT0R_PLT1R_PLT2R_USEFIELDR_USETYPER_METHODOFFR_POWER_TOCR_GOTPCRELR_JMPMIPSR_DWARFSECREFR_DWARFFILEREFR_ARM64_TLS_LER_ARM64_TLS_IER_ARM64_GOTPCRELR_ARM64_GOTR_ARM64_PCRELR_ARM64_LDST8R_ARM64_LDST32R_ARM64_LDST64R_ARM64_LDST128R_POWER_TLS_LER_POWER_TLS_IER_POWER_TLSR_ADDRPOWER_DSR_ADDRPOWER_GOTR_ADDRPOWER_PCRELR_ADDRPOWER_TOCRELR_ADDRPOWER_TOCREL_DSR_RISCV_PCREL_ITYPER_RISCV_PCREL_STYPER_PCRELDBLR_ADDRMIPSUR_ADDRMIPSTLSR_ADDRCUOFFR_WASMIMPORTR_XCOFFREF"
-var _RelocType_index = [...]uint16{0, 6, 17, 28, 38, 47, 60, 66, 72, 81, 92, 101, 112, 122, 129, 136, 144, 152, 160, 166, 172, 178, 188, 197, 208, 219, 229, 238, 251, 265, 279, 293, 309, 320, 333, 346, 360, 374, 389, 403, 417, 428, 442, 457, 474, 492, 513, 523, 534, 547, 558, 570, 580}
+var _RelocType_index = [...]uint16{0, 6, 17, 28, 38, 47, 60, 66, 72, 81, 92, 101, 112, 122, 133, 140, 147, 155, 163, 171, 177, 183, 189, 199, 208, 219, 230, 240, 249, 262, 276, 290, 304, 320, 331, 344, 357, 371, 385, 400, 414, 428, 439, 453, 468, 485, 503, 524, 543, 562, 572, 583, 596, 607, 619, 629}
func (i RelocType) String() string {
i -= 1
diff --git a/src/cmd/link/internal/ld/config.go b/src/cmd/link/internal/ld/config.go
index 3f5b6d4fdf..dcbe136832 100644
--- a/src/cmd/link/internal/ld/config.go
+++ b/src/cmd/link/internal/ld/config.go
@@ -258,7 +258,10 @@ func determineLinkMode(ctxt *Link) {
Exitf("internal linking requested %sbut external linking required: %s", via, extReason)
}
case LinkExternal:
- if objabi.GOARCH == "ppc64" && objabi.GOOS != "aix" {
+ switch {
+ case objabi.GOARCH == "riscv64":
+ Exitf("external linking not supported for %s/riscv64", objabi.GOOS)
+ case objabi.GOARCH == "ppc64" && objabi.GOOS != "aix":
Exitf("external linking not supported for %s/ppc64", objabi.GOOS)
}
}
diff --git a/src/cmd/link/internal/ld/elf.go b/src/cmd/link/internal/ld/elf.go
index 91198efd27..69cad383d0 100644
--- a/src/cmd/link/internal/ld/elf.go
+++ b/src/cmd/link/internal/ld/elf.go
@@ -176,6 +176,7 @@ const (
EM_MIPS_RS4_BE = 10
EM_ALPHA_STD = 41
EM_ALPHA = 0x9026
+ EM_RISCV = 243
SHN_UNDEF = 0
SHN_LORESERVE = 0xff00
SHN_LOPROC = 0xff00
@@ -485,7 +486,7 @@ var buildinfo []byte
func Elfinit(ctxt *Link) {
ctxt.IsELF = true
- if ctxt.Arch.InFamily(sys.AMD64, sys.ARM64, sys.MIPS64, sys.PPC64, sys.S390X) {
+ if ctxt.Arch.InFamily(sys.AMD64, sys.ARM64, sys.MIPS64, sys.PPC64, sys.RISCV64, sys.S390X) {
elfRelType = ".rela"
} else {
elfRelType = ".rel"
@@ -500,7 +501,7 @@ func Elfinit(ctxt *Link) {
ehdr.flags = 2 /* Version 2 ABI */
}
fallthrough
- case sys.AMD64, sys.ARM64, sys.MIPS64:
+ case sys.AMD64, sys.ARM64, sys.MIPS64, sys.RISCV64:
if ctxt.Arch.Family == sys.MIPS64 {
ehdr.flags = 0x20000004 /* MIPS 3 CPIC */
}
@@ -1758,6 +1759,8 @@ func Asmbelf(ctxt *Link, symo int64) {
eh.machine = EM_386
case sys.PPC64:
eh.machine = EM_PPC64
+ case sys.RISCV64:
+ eh.machine = EM_RISCV
case sys.S390X:
eh.machine = EM_S390
}
diff --git a/src/cmd/link/internal/riscv64/asm.go b/src/cmd/link/internal/riscv64/asm.go
new file mode 100644
index 0000000000..111ff9da12
--- /dev/null
+++ b/src/cmd/link/internal/riscv64/asm.go
@@ -0,0 +1,122 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package riscv64
+
+import (
+ "cmd/internal/objabi"
+ "cmd/internal/sys"
+ "cmd/link/internal/ld"
+ "cmd/link/internal/sym"
+ "fmt"
+ "log"
+)
+
+func gentext(ctxt *ld.Link) {
+}
+
+func adddynrela(ctxt *ld.Link, rel *sym.Symbol, s *sym.Symbol, r *sym.Reloc) {
+ log.Fatalf("adddynrela not implemented")
+}
+
+func adddynrel(ctxt *ld.Link, s *sym.Symbol, r *sym.Reloc) bool {
+ log.Fatalf("adddynrel not implemented")
+ return false
+}
+
+func elfreloc1(ctxt *ld.Link, r *sym.Reloc, sectoff int64) bool {
+ log.Fatalf("elfreloc1")
+ return false
+}
+
+func elfsetupplt(ctxt *ld.Link) {
+ log.Fatalf("elfsetuplt")
+}
+
+func machoreloc1(arch *sys.Arch, out *ld.OutBuf, s *sym.Symbol, r *sym.Reloc, sectoff int64) bool {
+ log.Fatalf("machoreloc1 not implemented")
+ return false
+}
+
+func archreloc(ctxt *ld.Link, r *sym.Reloc, s *sym.Symbol, val int64) (int64, bool) {
+ // TODO(jsing): Implement.
+ log.Fatalf("archreloc not implemented")
+ return val, false
+}
+
+func archrelocvariant(ctxt *ld.Link, r *sym.Reloc, s *sym.Symbol, t int64) int64 {
+ log.Fatalf("archrelocvariant")
+ return -1
+}
+
+func asmb(ctxt *ld.Link) {
+ if ctxt.IsELF {
+ ld.Asmbelfsetup()
+ }
+
+ sect := ld.Segtext.Sections[0]
+ ctxt.Out.SeekSet(int64(sect.Vaddr - ld.Segtext.Vaddr + ld.Segtext.Fileoff))
+ ld.Codeblk(ctxt, int64(sect.Vaddr), int64(sect.Length))
+ for _, sect = range ld.Segtext.Sections[1:] {
+ ctxt.Out.SeekSet(int64(sect.Vaddr - ld.Segtext.Vaddr + ld.Segtext.Fileoff))
+ ld.Datblk(ctxt, int64(sect.Vaddr), int64(sect.Length))
+ }
+
+ if ld.Segrodata.Filelen > 0 {
+ ctxt.Out.SeekSet(int64(ld.Segrodata.Fileoff))
+ ld.Datblk(ctxt, int64(ld.Segrodata.Vaddr), int64(ld.Segrodata.Filelen))
+ }
+ if ld.Segrelrodata.Filelen > 0 {
+ ctxt.Out.SeekSet(int64(ld.Segrelrodata.Fileoff))
+ ld.Datblk(ctxt, int64(ld.Segrelrodata.Vaddr), int64(ld.Segrelrodata.Filelen))
+ }
+
+ ctxt.Out.SeekSet(int64(ld.Segdata.Fileoff))
+ ld.Datblk(ctxt, int64(ld.Segdata.Vaddr), int64(ld.Segdata.Filelen))
+
+ ctxt.Out.SeekSet(int64(ld.Segdwarf.Fileoff))
+ ld.Dwarfblk(ctxt, int64(ld.Segdwarf.Vaddr), int64(ld.Segdwarf.Filelen))
+}
+
+func asmb2(ctxt *ld.Link) {
+ ld.Symsize = 0
+ ld.Lcsize = 0
+ symo := uint32(0)
+
+ if !*ld.FlagS {
+ if !ctxt.IsELF {
+ ld.Errorf(nil, "unsupported executable format")
+ }
+
+ symo = uint32(ld.Segdwarf.Fileoff + ld.Segdwarf.Filelen)
+ symo = uint32(ld.Rnd(int64(symo), int64(*ld.FlagRound)))
+ ctxt.Out.SeekSet(int64(symo))
+
+ ld.Asmelfsym(ctxt)
+ ctxt.Out.Flush()
+ ctxt.Out.Write(ld.Elfstrdat)
+
+ if ctxt.LinkMode == ld.LinkExternal {
+ ld.Elfemitreloc(ctxt)
+ }
+ }
+
+ ctxt.Out.SeekSet(0)
+ switch ctxt.HeadType {
+ case objabi.Hlinux:
+ ld.Asmbelf(ctxt, int64(symo))
+ default:
+ ld.Errorf(nil, "unsupported operating system")
+ }
+ ctxt.Out.Flush()
+
+ if *ld.FlagC {
+ fmt.Printf("textsize=%d\n", ld.Segtext.Filelen)
+ fmt.Printf("datsize=%d\n", ld.Segdata.Filelen)
+ fmt.Printf("bsssize=%d\n", ld.Segdata.Length-ld.Segdata.Filelen)
+ fmt.Printf("symsize=%d\n", ld.Symsize)
+ fmt.Printf("lcsize=%d\n", ld.Lcsize)
+ fmt.Printf("total=%d\n", ld.Segtext.Filelen+ld.Segdata.Length+uint64(ld.Symsize)+uint64(ld.Lcsize))
+ }
+}
diff --git a/src/cmd/link/internal/riscv64/l.go b/src/cmd/link/internal/riscv64/l.go
new file mode 100644
index 0000000000..a302657726
--- /dev/null
+++ b/src/cmd/link/internal/riscv64/l.go
@@ -0,0 +1,14 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package riscv64
+
+const (
+ maxAlign = 32 // max data alignment
+ minAlign = 1
+ funcAlign = 8
+
+ dwarfRegLR = 1
+ dwarfRegSP = 2
+)
diff --git a/src/cmd/link/internal/riscv64/obj.go b/src/cmd/link/internal/riscv64/obj.go
new file mode 100644
index 0000000000..c1e46807ff
--- /dev/null
+++ b/src/cmd/link/internal/riscv64/obj.go
@@ -0,0 +1,60 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package riscv64
+
+import (
+ "cmd/internal/objabi"
+ "cmd/internal/sys"
+ "cmd/link/internal/ld"
+)
+
+func Init() (*sys.Arch, ld.Arch) {
+ arch := sys.ArchRISCV64
+
+ theArch := ld.Arch{
+ Funcalign: funcAlign,
+ Maxalign: maxAlign,
+ Minalign: minAlign,
+ Dwarfregsp: dwarfRegSP,
+ Dwarfreglr: dwarfRegLR,
+
+ Adddynrel: adddynrel,
+ Archinit: archinit,
+ Archreloc: archreloc,
+ Archrelocvariant: archrelocvariant,
+ Asmb: asmb,
+ Asmb2: asmb2,
+ Elfreloc1: elfreloc1,
+ Elfsetupplt: elfsetupplt,
+ Gentext: gentext,
+ Machoreloc1: machoreloc1,
+
+ Linuxdynld: "/lib/ld.so.1",
+
+ Freebsddynld: "XXX",
+ Netbsddynld: "XXX",
+ Openbsddynld: "XXX",
+ Dragonflydynld: "XXX",
+ Solarisdynld: "XXX",
+ }
+
+ return arch, theArch
+}
+
+func archinit(ctxt *ld.Link) {
+ switch ctxt.HeadType {
+ case objabi.Hlinux:
+ ld.Elfinit(ctxt)
+ ld.HEADR = ld.ELFRESERVE
+ if *ld.FlagTextAddr == -1 {
+ *ld.FlagTextAddr = 0x10000 + int64(ld.HEADR)
+ }
+ if *ld.FlagRound == -1 {
+ *ld.FlagRound = 0x10000
+ }
+ default:
+ ld.Exitf("unknown -H option: %v", ctxt.HeadType)
+ }
+}
diff --git a/src/cmd/link/main.go b/src/cmd/link/main.go
index 99550b0584..6b4ca9706d 100644
--- a/src/cmd/link/main.go
+++ b/src/cmd/link/main.go
@@ -14,6 +14,7 @@ import (
"cmd/link/internal/mips"
"cmd/link/internal/mips64"
"cmd/link/internal/ppc64"
+ "cmd/link/internal/riscv64"
"cmd/link/internal/s390x"
"cmd/link/internal/wasm"
"cmd/link/internal/x86"
@@ -57,6 +58,8 @@ func main() {
arch, theArch = mips64.Init()
case "ppc64", "ppc64le":
arch, theArch = ppc64.Init()
+ case "riscv64":
+ arch, theArch = riscv64.Init()
case "s390x":
arch, theArch = s390x.Init()
case "wasm":
generated by cgit v1.3-5-g45d5 (git 2.53.0) at 2026-04-17 16:51:47 +0000