git: 2bb61497ca76 - main - elf_common.h: Add definitions for LoongArch ELF files
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Date: Mon, 02 Dec 2024 14:20:04 UTC
The branch main has been updated by emaste:
URL: https://cgit.FreeBSD.org/src/commit/?id=2bb61497ca76646c92f25127b8d4d64281123400
commit 2bb61497ca76646c92f25127b8d4d64281123400
Author: Haowu Ge <gehaowu@bitmoe.com>
AuthorDate: 2024-12-02 11:36:28 +0000
Commit: Ed Maste <emaste@FreeBSD.org>
CommitDate: 2024-12-02 14:19:33 +0000
elf_common.h: Add definitions for LoongArch ELF files
Including e_machine, e_flags and relocation types.
References:
Loongson documentation:
https://github.com/loongson/la-abi-specs/blob/release/laelf.adoc
LLVM reviews / commits:
https://reviews.llvm.org/D134601
https://reviews.llvm.org/D115859
https://reviews.llvm.org/D131467
https://reviews.llvm.org/D152184
https://github.com/llvm/llvm-project/pull/73345
https://github.com/llvm/llvm-project/pull/77039
Binutils commits:
6d13722a97cee3fd397e116bde3bcedbb1e220be
9801120721c3a702ce3bd50433ef920f92a83502
57a930e3bfe4b2c7fd6463ed39311e1938513138
Reviewed by: markj, emaste
Pull Request: https://github.com/freebsd/freebsd-src/pull/1532
---
sys/sys/elf_common.h | 176 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 176 insertions(+)
diff --git a/sys/sys/elf_common.h b/sys/sys/elf_common.h
index ec5bbbf9f0e6..766ff6ede51b 100644
--- a/sys/sys/elf_common.h
+++ b/sys/sys/elf_common.h
@@ -306,6 +306,7 @@ typedef struct {
and MPRC of Peking University */
#define EM_AARCH64 183 /* AArch64 (64-bit ARM) */
#define EM_RISCV 243 /* RISC-V */
+#define EM_LOONGARCH 258 /* Loongson LoongArch */
/* Non-standard or deprecated. */
#define EM_486 6 /* Intel i486. */
@@ -382,6 +383,25 @@ typedef struct {
#define EF_RISCV_RVE 0x00000008
#define EF_RISCV_TSO 0x00000010
+/*
+ * Loongson LoongArch Specific e_flags
+ *
+ * Definitions from LoongArch ELF psABI v2.01.
+ * Reference: https://github.com/loongson/LoongArch-Documentation
+ * (commit hash 296de4def055c871809068e0816325a4ac04eb12)
+ */
+
+/* LoongArch Base ABI Modifiers */
+#define EF_LOONGARCH_ABI_SOFT_FLOAT 0x00000001
+#define EF_LOONGARCH_ABI_SINGLE_FLOAT 0x00000002
+#define EF_LOONGARCH_ABI_DOUBLE_FLOAT 0x00000003
+#define EF_LOONGARCH_ABI_MODIFIER_MASK 0x00000007
+
+/* LoongArch Object file ABI versions */
+#define EF_LOONGARCH_OBJABI_V0 0x00000000
+#define EF_LOONGARCH_OBJABI_V1 0x00000040
+#define EF_LOONGARCH_OBJABI_MASK 0x000000C0
+
#define EF_SPARC_EXT_MASK 0x00ffff00
#define EF_SPARC_32PLUS 0x00000100
#define EF_SPARC_SUN_US1 0x00000200
@@ -1380,6 +1400,162 @@ typedef struct {
#define R_RISCV_32_PCREL 57
#define R_RISCV_IRELATIVE 58
+/*
+ * Loongson LoongArch relocation types.
+ *
+ * LoongArch ELF psABI: https://github.com/loongson/LoongArch-Documentation
+ * (commit hash 9b3bd9f4a497115913c22f1a2a47863798fbc02a)
+ */
+
+/* Relocation types used by the dynamic linker */
+#define R_LARCH_NONE 0
+#define R_LARCH_32 1
+#define R_LARCH_64 2
+#define R_LARCH_RELATIVE 3
+#define R_LARCH_COPY 4
+#define R_LARCH_JUMP_SLOT 5
+#define R_LARCH_TLS_DTPMOD32 6
+#define R_LARCH_TLS_DTPMOD64 7
+#define R_LARCH_TLS_DTPREL32 8
+#define R_LARCH_TLS_DTPREL64 9
+#define R_LARCH_TLS_TPREL32 10
+#define R_LARCH_TLS_TPREL64 11
+#define R_LARCH_IRELATIVE 12
+#define R_LARCH_MARK_LA 20
+#define R_LARCH_MARK_PCREL 21
+#define R_LARCH_SOP_PUSH_PCREL 22
+#define R_LARCH_SOP_PUSH_ABSOLUTE 23
+#define R_LARCH_SOP_PUSH_DUP 24
+#define R_LARCH_SOP_PUSH_GPREL 25
+#define R_LARCH_SOP_PUSH_TLS_TPREL 26
+#define R_LARCH_SOP_PUSH_TLS_GOT 27
+#define R_LARCH_SOP_PUSH_TLS_GD 28
+#define R_LARCH_SOP_PUSH_PLT_PCREL 29
+#define R_LARCH_SOP_ASSERT 30
+#define R_LARCH_SOP_NOT 31
+#define R_LARCH_SOP_SUB 32
+#define R_LARCH_SOP_SL 33
+#define R_LARCH_SOP_SR 34
+#define R_LARCH_SOP_ADD 35
+#define R_LARCH_SOP_AND 36
+#define R_LARCH_SOP_IF_ELSE 37
+#define R_LARCH_SOP_POP_32_S_10_5 38
+#define R_LARCH_SOP_POP_32_U_10_12 39
+#define R_LARCH_SOP_POP_32_S_10_12 40
+#define R_LARCH_SOP_POP_32_S_10_16 41
+#define R_LARCH_SOP_POP_32_S_10_16_S2 42
+#define R_LARCH_SOP_POP_32_S_5_20 43
+#define R_LARCH_SOP_POP_32_S_0_5_10_16_S2 44
+#define R_LARCH_SOP_POP_32_S_0_10_10_16_S2 45
+#define R_LARCH_SOP_POP_32_U 46
+#define R_LARCH_ADD8 47
+#define R_LARCH_ADD16 48
+#define R_LARCH_ADD24 49
+#define R_LARCH_ADD32 50
+#define R_LARCH_ADD64 51
+#define R_LARCH_SUB8 52
+#define R_LARCH_SUB16 53
+#define R_LARCH_SUB24 54
+#define R_LARCH_SUB32 55
+#define R_LARCH_SUB64 56
+#define R_LARCH_GNU_VTINHERIT 57
+#define R_LARCH_GNU_VTENTRY 58
+
+/*
+ * Relocs whose processing do not require a stack machine.
+ *
+ * Spec addition: https://github.com/loongson/LoongArch-Documentation/pull/57
+ */
+#define R_LARCH_B16 64
+#define R_LARCH_B21 65
+#define R_LARCH_B26 66
+#define R_LARCH_ABS_HI20 67
+#define R_LARCH_ABS_LO12 68
+#define R_LARCH_ABS64_LO20 69
+#define R_LARCH_ABS64_HI12 70
+#define R_LARCH_PCALA_HI20 71
+#define R_LARCH_PCALA_LO12 72
+#define R_LARCH_PCALA64_LO20 73
+#define R_LARCH_PCALA64_HI12 74
+#define R_LARCH_GOT_PC_HI20 75
+#define R_LARCH_GOT_PC_LO12 76
+#define R_LARCH_GOT64_PC_LO20 77
+#define R_LARCH_GOT64_PC_HI12 78
+#define R_LARCH_GOT_HI20 79
+#define R_LARCH_GOT_LO12 80
+#define R_LARCH_GOT64_LO20 81
+#define R_LARCH_GOT64_HI12 82
+#define R_LARCH_TLS_LE_HI20 83
+#define R_LARCH_TLS_LE_LO12 84
+#define R_LARCH_TLS_LE64_LO20 85
+#define R_LARCH_TLS_LE64_HI12 86
+#define R_LARCH_TLS_IE_PC_HI20 87
+#define R_LARCH_TLS_IE_PC_LO12 88
+#define R_LARCH_TLS_IE64_PC_LO20 89
+#define R_LARCH_TLS_IE64_PC_HI12 90
+#define R_LARCH_TLS_IE_HI20 91
+#define R_LARCH_TLS_IE_LO12 92
+#define R_LARCH_TLS_IE64_LO20 93
+#define R_LARCH_TLS_IE64_HI12 94
+#define R_LARCH_TLS_LD_PC_HI20 95
+#define R_LARCH_TLS_LD_HI20 96
+#define R_LARCH_TLS_GD_PC_HI20 97
+#define R_LARCH_TLS_GD_HI20 98
+#define R_LARCH_32_PCREL 99
+#define R_LARCH_RELAX 100
+
+/*
+ * Relocs added in ELF for the LoongArch™ Architecture v20230519, part of the
+ * v2.10 LoongArch ABI specs.
+ *
+ * Spec addition: https://github.com/loongson/la-abi-specs/pull/1
+ *
+ * Note that the 101 and 104 relocation numbers are defined as R_LARCH_DELETE
+ * and R_LARCH_CFA respectively in psABI 2.10. But they are marked as reserved
+ * in psABI v2.20 because they were proved not necessary to be exposed outside
+ * of the linker.
+ */
+#define R_LARCH_ALIGN 102
+#define R_LARCH_PCREL20_S2 103
+#define R_LARCH_ADD6 105
+#define R_LARCH_SUB6 106
+#define R_LARCH_ADD_ULEB128 107
+#define R_LARCH_SUB_ULEB128 108
+#define R_LARCH_64_PCREL 109
+
+/*
+ * Relocs added in ELF for the LoongArch™ Architecture v20231102, part of the
+ * v2.20 LoongArch ABI specs.
+ *
+ * Spec addition: https://github.com/loongson/la-abi-specs/pull/4
+ */
+#define R_LARCH_CALL36 110
+
+/*
+ * Relocs added in ELF for the LoongArch™ Architecture v20231219, part of the
+ * v2.30 LoongArch ABI specs.
+ *
+ * Spec addition: https://github.com/loongson/la-abi-specs/pull/5
+ */
+#define R_LARCH_TLS_DESC32 13
+#define R_LARCH_TLS_DESC64 14
+#define R_LARCH_TLS_DESC_PC_HI20 111
+#define R_LARCH_TLS_DESC_PC_LO12 112
+#define R_LARCH_TLS_DESC64_PC_LO20 113
+#define R_LARCH_TLS_DESC64_PC_HI12 114
+#define R_LARCH_TLS_DESC_HI20 115
+#define R_LARCH_TLS_DESC_LO12 116
+#define R_LARCH_TLS_DESC64_LO20 117
+#define R_LARCH_TLS_DESC64_HI12 118
+#define R_LARCH_TLS_DESC_LD 119
+#define R_LARCH_TLS_DESC_CALL 120
+#define R_LARCH_TLS_LE_HI20_R 121
+#define R_LARCH_TLS_LE_ADD_R 122
+#define R_LARCH_TLS_LE_LO12_R 123
+#define R_LARCH_TLS_LD_PCREL20_S2 124
+#define R_LARCH_TLS_GD_PCREL20_S2 125
+#define R_LARCH_TLS_DESC_PCREL20_S2 126
+
#define R_SPARC_NONE 0
#define R_SPARC_8 1
#define R_SPARC_16 2