From cd33b4089caf362203cd749ee1b3680b72a8c502 Mon Sep 17 00:00:00 2001 From: Xiaodong Liu Date: Wed, 30 Mar 2022 16:52:59 +0800 Subject: [PATCH] debug: define ELF relocation for loong64 Contributors to the loong64 port are: Weining Lu Lei Wang Lingqin Gong Xiaolin Zhao Meidan Li Xiaojuan Zhai Qiyuan Pu Guoqi Chen This port has been updated to Go 1.15.6: https://github.com/loongson/go For #46229 Change-Id: I0c58305754c20d2a59328adbd82caa527de254ec Reviewed-on: https://go-review.googlesource.com/c/go/+/396735 Reviewed-by: Ian Lance Taylor Trust: Cherry Mui --- api/next/46229.txt | 105 ++++++++++++++++++++++++++++++++++++++ src/debug/elf/elf.go | 114 ++++++++++++++++++++++++++++++++++++++++++ src/debug/elf/file.go | 50 ++++++++++++++++++ 3 files changed, 269 insertions(+) create mode 100644 api/next/46229.txt diff --git a/api/next/46229.txt b/api/next/46229.txt new file mode 100644 index 0000000000..ebaaefda55 --- /dev/null +++ b/api/next/46229.txt @@ -0,0 +1,105 @@ +pkg debug/elf, const EM_LOONGARCH = 258 #46229 +pkg debug/elf, const EM_LOONGARCH Machine #46229 +pkg debug/elf, const R_LARCH_32 = 1 #46229 +pkg debug/elf, const R_LARCH_32 R_LARCH #46229 +pkg debug/elf, const R_LARCH_64 = 2 #46229 +pkg debug/elf, const R_LARCH_64 R_LARCH #46229 +pkg debug/elf, const R_LARCH_ADD16 = 48 #46229 +pkg debug/elf, const R_LARCH_ADD16 R_LARCH #46229 +pkg debug/elf, const R_LARCH_ADD24 = 49 #46229 +pkg debug/elf, const R_LARCH_ADD24 R_LARCH #46229 +pkg debug/elf, const R_LARCH_ADD32 = 50 #46229 +pkg debug/elf, const R_LARCH_ADD32 R_LARCH #46229 +pkg debug/elf, const R_LARCH_ADD64 = 51 #46229 +pkg debug/elf, const R_LARCH_ADD64 R_LARCH #46229 +pkg debug/elf, const R_LARCH_ADD8 = 47 #46229 +pkg debug/elf, const R_LARCH_ADD8 R_LARCH #46229 +pkg debug/elf, const R_LARCH_COPY = 4 #46229 +pkg debug/elf, const R_LARCH_COPY R_LARCH #46229 +pkg debug/elf, const R_LARCH_IRELATIVE = 12 #46229 +pkg debug/elf, const R_LARCH_IRELATIVE R_LARCH #46229 +pkg debug/elf, const R_LARCH_JUMP_SLOT = 5 #46229 +pkg debug/elf, const R_LARCH_JUMP_SLOT R_LARCH #46229 +pkg debug/elf, const R_LARCH_MARK_LA = 20 #46229 +pkg debug/elf, const R_LARCH_MARK_LA R_LARCH #46229 +pkg debug/elf, const R_LARCH_MARK_PCREL = 21 #46229 +pkg debug/elf, const R_LARCH_MARK_PCREL R_LARCH #46229 +pkg debug/elf, const R_LARCH_NONE = 0 #46229 +pkg debug/elf, const R_LARCH_NONE R_LARCH #46229 +pkg debug/elf, const R_LARCH_RELATIVE = 3 #46229 +pkg debug/elf, const R_LARCH_RELATIVE R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_ADD = 35 #46229 +pkg debug/elf, const R_LARCH_SOP_ADD R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_AND = 36 #46229 +pkg debug/elf, const R_LARCH_SOP_AND R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_ASSERT = 30 #46229 +pkg debug/elf, const R_LARCH_SOP_ASSERT R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_IF_ELSE = 37 #46229 +pkg debug/elf, const R_LARCH_SOP_IF_ELSE R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_NOT = 31 #46229 +pkg debug/elf, const R_LARCH_SOP_NOT R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_S_0_10_10_16_S2 = 45 #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_S_0_10_10_16_S2 R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_S_0_5_10_16_S2 = 44 #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_S_0_5_10_16_S2 R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_S_10_12 = 40 #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_S_10_12 R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_S_10_16 = 41 #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_S_10_16 R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_S_10_16_S2 = 42 #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_S_10_16_S2 R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_S_10_5 = 38 #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_S_10_5 R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_S_5_20 = 43 #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_S_5_20 R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_U = 46 #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_U R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_U_10_12 = 39 #46229 +pkg debug/elf, const R_LARCH_SOP_POP_32_U_10_12 R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_ABSOLUTE = 23 #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_ABSOLUTE R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_DUP = 24 #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_DUP R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_GPREL = 25 #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_GPREL R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_PCREL = 22 #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_PCREL R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_PLT_PCREL = 29 #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_PLT_PCREL R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_TLS_GD = 28 #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_TLS_GD R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_TLS_GOT = 27 #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_TLS_GOT R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_TLS_TPREL = 26 #46229 +pkg debug/elf, const R_LARCH_SOP_PUSH_TLS_TPREL R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_SL = 33 #46229 +pkg debug/elf, const R_LARCH_SOP_SL R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_SR = 34 #46229 +pkg debug/elf, const R_LARCH_SOP_SR R_LARCH #46229 +pkg debug/elf, const R_LARCH_SOP_SUB = 32 #46229 +pkg debug/elf, const R_LARCH_SOP_SUB R_LARCH #46229 +pkg debug/elf, const R_LARCH_SUB16 = 53 #46229 +pkg debug/elf, const R_LARCH_SUB16 R_LARCH #46229 +pkg debug/elf, const R_LARCH_SUB24 = 54 #46229 +pkg debug/elf, const R_LARCH_SUB24 R_LARCH #46229 +pkg debug/elf, const R_LARCH_SUB32 = 55 #46229 +pkg debug/elf, const R_LARCH_SUB32 R_LARCH #46229 +pkg debug/elf, const R_LARCH_SUB64 = 56 #46229 +pkg debug/elf, const R_LARCH_SUB64 R_LARCH #46229 +pkg debug/elf, const R_LARCH_SUB8 = 52 #46229 +pkg debug/elf, const R_LARCH_SUB8 R_LARCH #46229 +pkg debug/elf, const R_LARCH_TLS_DTPMOD32 = 6 #46229 +pkg debug/elf, const R_LARCH_TLS_DTPMOD32 R_LARCH #46229 +pkg debug/elf, const R_LARCH_TLS_DTPMOD64 = 7 #46229 +pkg debug/elf, const R_LARCH_TLS_DTPMOD64 R_LARCH #46229 +pkg debug/elf, const R_LARCH_TLS_DTPREL32 = 8 #46229 +pkg debug/elf, const R_LARCH_TLS_DTPREL32 R_LARCH #46229 +pkg debug/elf, const R_LARCH_TLS_DTPREL64 = 9 #46229 +pkg debug/elf, const R_LARCH_TLS_DTPREL64 R_LARCH #46229 +pkg debug/elf, const R_LARCH_TLS_TPREL32 = 10 #46229 +pkg debug/elf, const R_LARCH_TLS_TPREL32 R_LARCH #46229 +pkg debug/elf, const R_LARCH_TLS_TPREL64 = 11 #46229 +pkg debug/elf, const R_LARCH_TLS_TPREL64 R_LARCH #46229 +pkg debug/elf, method (R_LARCH) GoString() string #46229 +pkg debug/elf, method (R_LARCH) String() string #46229 +pkg debug/elf, type R_LARCH int #46229 diff --git a/src/debug/elf/elf.go b/src/debug/elf/elf.go index 4c51bc4de2..5b2e6d9d3f 100644 --- a/src/debug/elf/elf.go +++ b/src/debug/elf/elf.go @@ -384,6 +384,7 @@ const ( EM_RISCV Machine = 243 /* RISC-V */ EM_LANAI Machine = 244 /* Lanai 32-bit processor */ EM_BPF Machine = 247 /* Linux BPF – in-kernel virtual machine */ + EM_LOONGARCH Machine = 258 /* LoongArch */ /* Non-standard or deprecated. */ EM_486 Machine = 6 /* Intel i486. */ @@ -575,6 +576,7 @@ var machineStrings = []intName{ {243, "EM_RISCV"}, {244, "EM_LANAI"}, {247, "EM_BPF"}, + {258, "EM_LOONGARCH"}, /* Non-standard or deprecated. */ {6, "EM_486"}, @@ -2150,6 +2152,118 @@ var rmipsStrings = []intName{ func (i R_MIPS) String() string { return stringName(uint32(i), rmipsStrings, false) } func (i R_MIPS) GoString() string { return stringName(uint32(i), rmipsStrings, true) } +// Relocation types for LARCH. +type R_LARCH int + +const ( + R_LARCH_NONE R_LARCH = 0 + R_LARCH_32 R_LARCH = 1 + R_LARCH_64 R_LARCH = 2 + R_LARCH_RELATIVE R_LARCH = 3 + R_LARCH_COPY R_LARCH = 4 + R_LARCH_JUMP_SLOT R_LARCH = 5 + R_LARCH_TLS_DTPMOD32 R_LARCH = 6 + R_LARCH_TLS_DTPMOD64 R_LARCH = 7 + R_LARCH_TLS_DTPREL32 R_LARCH = 8 + R_LARCH_TLS_DTPREL64 R_LARCH = 9 + R_LARCH_TLS_TPREL32 R_LARCH = 10 + R_LARCH_TLS_TPREL64 R_LARCH = 11 + R_LARCH_IRELATIVE R_LARCH = 12 + R_LARCH_MARK_LA R_LARCH = 20 + R_LARCH_MARK_PCREL R_LARCH = 21 + R_LARCH_SOP_PUSH_PCREL R_LARCH = 22 + R_LARCH_SOP_PUSH_ABSOLUTE R_LARCH = 23 + R_LARCH_SOP_PUSH_DUP R_LARCH = 24 + R_LARCH_SOP_PUSH_GPREL R_LARCH = 25 + R_LARCH_SOP_PUSH_TLS_TPREL R_LARCH = 26 + R_LARCH_SOP_PUSH_TLS_GOT R_LARCH = 27 + R_LARCH_SOP_PUSH_TLS_GD R_LARCH = 28 + R_LARCH_SOP_PUSH_PLT_PCREL R_LARCH = 29 + R_LARCH_SOP_ASSERT R_LARCH = 30 + R_LARCH_SOP_NOT R_LARCH = 31 + R_LARCH_SOP_SUB R_LARCH = 32 + R_LARCH_SOP_SL R_LARCH = 33 + R_LARCH_SOP_SR R_LARCH = 34 + R_LARCH_SOP_ADD R_LARCH = 35 + R_LARCH_SOP_AND R_LARCH = 36 + R_LARCH_SOP_IF_ELSE R_LARCH = 37 + R_LARCH_SOP_POP_32_S_10_5 R_LARCH = 38 + R_LARCH_SOP_POP_32_U_10_12 R_LARCH = 39 + R_LARCH_SOP_POP_32_S_10_12 R_LARCH = 40 + R_LARCH_SOP_POP_32_S_10_16 R_LARCH = 41 + R_LARCH_SOP_POP_32_S_10_16_S2 R_LARCH = 42 + R_LARCH_SOP_POP_32_S_5_20 R_LARCH = 43 + R_LARCH_SOP_POP_32_S_0_5_10_16_S2 R_LARCH = 44 + R_LARCH_SOP_POP_32_S_0_10_10_16_S2 R_LARCH = 45 + R_LARCH_SOP_POP_32_U R_LARCH = 46 + R_LARCH_ADD8 R_LARCH = 47 + R_LARCH_ADD16 R_LARCH = 48 + R_LARCH_ADD24 R_LARCH = 49 + R_LARCH_ADD32 R_LARCH = 50 + R_LARCH_ADD64 R_LARCH = 51 + R_LARCH_SUB8 R_LARCH = 52 + R_LARCH_SUB16 R_LARCH = 53 + R_LARCH_SUB24 R_LARCH = 54 + R_LARCH_SUB32 R_LARCH = 55 + R_LARCH_SUB64 R_LARCH = 56 +) + +var rlarchStrings = []intName{ + {0, "R_LARCH_NONE"}, + {1, "R_LARCH_32"}, + {2, "R_LARCH_64"}, + {3, "R_LARCH_RELATIVE"}, + {4, "R_LARCH_COPY"}, + {5, "R_LARCH_JUMP_SLOT"}, + {6, "R_LARCH_TLS_DTPMOD32"}, + {7, "R_LARCH_TLS_DTPMOD64"}, + {8, "R_LARCH_TLS_DTPREL32"}, + {9, "R_LARCH_TLS_DTPREL64"}, + {10, "R_LARCH_TLS_TPREL32"}, + {11, "R_LARCH_TLS_TPREL64"}, + {12, "R_LARCH_IRELATIVE"}, + {20, "R_LARCH_MARK_LA"}, + {21, "R_LARCH_MARK_PCREL"}, + {22, "R_LARCH_SOP_PUSH_PCREL"}, + {23, "R_LARCH_SOP_PUSH_ABSOLUTE"}, + {24, "R_LARCH_SOP_PUSH_DUP"}, + {25, "R_LARCH_SOP_PUSH_GPREL"}, + {26, "R_LARCH_SOP_PUSH_TLS_TPREL"}, + {27, "R_LARCH_SOP_PUSH_TLS_GOT"}, + {28, "R_LARCH_SOP_PUSH_TLS_GD"}, + {29, "R_LARCH_SOP_PUSH_PLT_PCREL"}, + {30, "R_LARCH_SOP_ASSERT"}, + {31, "R_LARCH_SOP_NOT"}, + {32, "R_LARCH_SOP_SUB"}, + {33, "R_LARCH_SOP_SL"}, + {34, "R_LARCH_SOP_SR"}, + {35, "R_LARCH_SOP_ADD"}, + {36, "R_LARCH_SOP_AND"}, + {37, "R_LARCH_SOP_IF_ELSE"}, + {38, "R_LARCH_SOP_POP_32_S_10_5"}, + {39, "R_LARCH_SOP_POP_32_U_10_12"}, + {40, "R_LARCH_SOP_POP_32_S_10_12"}, + {41, "R_LARCH_SOP_POP_32_S_10_16"}, + {42, "R_LARCH_SOP_POP_32_S_10_16_S2"}, + {43, "R_LARCH_SOP_POP_32_S_5_20"}, + {44, "R_LARCH_SOP_POP_32_S_0_5_10_16_S2"}, + {45, "R_LARCH_SOP_POP_32_S_0_10_10_16_S2"}, + {46, "R_LARCH_SOP_POP_32_U"}, + {47, "R_LARCH_ADD8"}, + {48, "R_LARCH_ADD16"}, + {49, "R_LARCH_ADD24"}, + {50, "R_LARCH_ADD32"}, + {51, "R_LARCH_ADD64"}, + {52, "R_LARCH_SUB8"}, + {53, "R_LARCH_SUB16"}, + {54, "R_LARCH_SUB24"}, + {55, "R_LARCH_SUB32"}, + {56, "R_LARCH_SUB64"}, +} + +func (i R_LARCH) String() string { return stringName(uint32(i), rlarchStrings, false) } +func (i R_LARCH) GoString() string { return stringName(uint32(i), rlarchStrings, true) } + // Relocation types for PowerPC. // // Values that are shared by both R_PPC and R_PPC64 are prefixed with diff --git a/src/debug/elf/file.go b/src/debug/elf/file.go index 5f339596a7..6bfcd2a3f8 100644 --- a/src/debug/elf/file.go +++ b/src/debug/elf/file.go @@ -633,6 +633,8 @@ func (f *File) applyRelocations(dst []byte, rels []byte) error { return f.applyRelocationsMIPS(dst, rels) case f.Class == ELFCLASS64 && f.Machine == EM_MIPS: return f.applyRelocationsMIPS64(dst, rels) + case f.Class == ELFCLASS64 && f.Machine == EM_LOONGARCH: + return f.applyRelocationsLOONG64(dst, rels) case f.Class == ELFCLASS64 && f.Machine == EM_RISCV: return f.applyRelocationsRISCV64(dst, rels) case f.Class == ELFCLASS64 && f.Machine == EM_S390: @@ -1006,6 +1008,54 @@ func (f *File) applyRelocationsMIPS64(dst []byte, rels []byte) error { return nil } +func (f *File) applyRelocationsLOONG64(dst []byte, rels []byte) error { + // 24 is the size of Rela64. + if len(rels)%24 != 0 { + return errors.New("length of relocation section is not a multiple of 24") + } + + symbols, _, err := f.getSymbols(SHT_SYMTAB) + if err != nil { + return err + } + + b := bytes.NewReader(rels) + var rela Rela64 + + for b.Len() > 0 { + binary.Read(b, f.ByteOrder, &rela) + var symNo uint64 + var t R_LARCH + symNo = rela.Info >> 32 + t = R_LARCH(rela.Info & 0xffff) + + if symNo == 0 || symNo > uint64(len(symbols)) { + continue + } + sym := &symbols[symNo-1] + if !canApplyRelocation(sym) { + continue + } + + switch t { + case R_LARCH_64: + if rela.Off+8 >= uint64(len(dst)) || rela.Addend < 0 { + continue + } + val64 := sym.Value + uint64(rela.Addend) + f.ByteOrder.PutUint64(dst[rela.Off:rela.Off+8], val64) + case R_LARCH_32: + if rela.Off+4 >= uint64(len(dst)) || rela.Addend < 0 { + continue + } + val32 := uint32(sym.Value) + uint32(rela.Addend) + f.ByteOrder.PutUint32(dst[rela.Off:rela.Off+4], val32) + } + } + + return nil +} + func (f *File) applyRelocationsRISCV64(dst []byte, rels []byte) error { // 24 is the size of Rela64. if len(rels)%24 != 0 { -- 2.48.1