Re: [PATCH v6] MIPS: Sync elf.h from binutils

["Ying Huang" <ying.huang@oss.cipunited.com>]

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ping

Thanks,

Ying

在 2023/6/15 15:50, Ying Huang 写道:
>
> From: Ying Huang
>
> Add new definitions for the MIPS target, specifically: relocation
> types, machine flags, section type names, and object attribute tags
> and values. On MIPS64, up to three relocations may be specified
> within r_info, by the r_type, r_type2, and r_type3 fields, so add new
> macros to get the respective reloc types for MIPS64.
> ---
> elf/elf.h | 140 ++++++++++++++++++++++++++++++++++++++++++++++++++++--
> 1 file changed, 137 insertions(+), 3 deletions(-)
>
> diff --git a/elf/elf.h b/elf/elf.h
> index ac7032b7a5..ef84ea0d22 100644
> --- a/elf/elf.h
> +++ b/elf/elf.h
> @@ -678,6 +678,9 @@ typedef Elf64_Xword Elf64_Relr;
>
> #define ELF64_R_SYM(i) ((i) >> 32)
> #define ELF64_R_TYPE(i) ((i) & 0xffffffff)
> +#define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
> +#define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
> +#define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
> #define ELF64_R_INFO(sym,type) ((((Elf64_Xword) (sym)) << 32) + (type))
>
> /* Program segment header. */
> @@ -1685,11 +1688,25 @@ typedef struct
> #define EF_MIPS_PIC 2 /* Contains PIC code. */
> #define EF_MIPS_CPIC 4 /* Uses PIC calling sequence. */
> #define EF_MIPS_XGOT 8
> -#define EF_MIPS_64BIT_WHIRL 16
> +#define EF_MIPS_UCODE 16
> #define EF_MIPS_ABI2 32
> #define EF_MIPS_ABI_ON32 64
> +#define EF_MIPS_OPTIONS_FIRST 0x00000080 /* Process the .MIPS.options
> + section first by ld. */
> +#define EF_MIPS_32BITMODE 0x00000100 /* Indicates code compiled for
> + a 64-bit machine in 32-bit
> + mode (regs are 32-bits
> + wide). */
> #define EF_MIPS_FP64 512 /* Uses FP64 (12 callee-saved). */
> #define EF_MIPS_NAN2008 1024 /* Uses IEEE 754-2008 NaN encoding. */
> +#define EF_MIPS_ARCH_ASE 0x0f000000 /* Architectural Extensions
> + used by this file. */
> +#define EF_MIPS_ARCH_ASE_MDMX 0x08000000 /* Use MDMX multimedia
> + extensions. */
> +#define EF_MIPS_ARCH_ASE_M16 0x04000000 /* Use MIPS-16 ISA
> + extensions. */
> +#define EF_MIPS_ARCH_ASE_MICROMIPS 0x02000000 /* Use MICROMIPS ISA
> + extensions. */
> #define EF_MIPS_ARCH 0xf0000000 /* MIPS architecture level. */
>
> /* Legal values for MIPS architecture level. */
> @@ -1703,6 +1720,37 @@ typedef struct
> #define EF_MIPS_ARCH_64 0x60000000 /* MIPS64 code. */
> #define EF_MIPS_ARCH_32R2 0x70000000 /* MIPS32r2 code. */
> #define EF_MIPS_ARCH_64R2 0x80000000 /* MIPS64r2 code. */
> +#define EF_MIPS_ARCH_32R6 0x90000000 /* MIPS32r6 code. */
> +#define EF_MIPS_ARCH_64R6 0xa0000000 /* MIPS64r6 code. */
> +#define EF_MIPS_ABI 0x0000F000 /* The ABI of the file. Also
> + see EF_MIPS_ABI2 above. */
> +#define EF_MIPS_ABI_O32 0x00001000 /* The original o32 abi. */
> +#define EF_MIPS_ABI_O64 0x00002000 /* O32 extended to work on
> + 64 bit architectures. */
> +#define EF_MIPS_ABI_EABI32 0x00003000 /* EABI in 32 bit mode. */
> +#define EF_MIPS_ABI_EABI64 0x00004000 /* EABI in 64 bit mode. */
> +#define EF_MIPS_MACH 0x00FF0000
> +#define EF_MIPS_MACH_3900 0x00810000
> +#define EF_MIPS_MACH_4010 0x00820000
> +#define EF_MIPS_MACH_4100 0x00830000
> +#define EF_MIPS_MACH_4650 0x00850000
> +#define EF_MIPS_MACH_4120 0x00870000
> +#define EF_MIPS_MACH_4111 0x00880000
> +#define EF_MIPS_MACH_SB1 0x008a0000
> +#define EF_MIPS_MACH_OCTEON 0x008b0000
> +#define EF_MIPS_MACH_XLR 0x008c0000
> +#define EF_MIPS_MACH_OCTEON2 0x008d0000
> +#define EF_MIPS_MACH_OCTEON3 0x008e0000
> +#define EF_MIPS_MACH_5400 0x00910000
> +#define EF_MIPS_MACH_5900 0x00920000
> +#define EF_MIPS_MACH_IAMR2 0x00930000
> +#define EF_MIPS_MACH_5500 0x00980000
> +#define EF_MIPS_MACH_9000 0x00990000
> +#define EF_MIPS_MACH_LS2E 0x00A00000
> +#define EF_MIPS_MACH_LS2F 0x00A10000
> +#define EF_MIPS_MACH_GS464 0x00A20000
> +#define EF_MIPS_MACH_GS464E 0x00A30000
> +#define EF_MIPS_MACH_GS264E 0x00A40000
>
> /* The following are unofficial names and should not be used. */
>
> @@ -1763,6 +1811,7 @@ typedef struct
> #define SHT_MIPS_EH_REGION 0x70000027
> #define SHT_MIPS_XLATE_OLD 0x70000028
> #define SHT_MIPS_PDR_EXCEPTION 0x70000029
> +#define SHT_MIPS_ABIFLAGS 0x7000002a
> #define SHT_MIPS_XHASH 0x7000002b
>
> /* Legal values for sh_flags field of Elf32_Shdr. */
> @@ -1931,10 +1980,68 @@ typedef struct
> #define R_MIPS_TLS_TPREL_HI16 49 /* TP-relative offset, high 16 bits */
> #define R_MIPS_TLS_TPREL_LO16 50 /* TP-relative offset, low 16 bits */
> #define R_MIPS_GLOB_DAT 51
> +#define R_MIPS_PC21_S2 60
> +#define R_MIPS_PC26_S2 61
> +#define R_MIPS_PC18_S3 62
> +#define R_MIPS_PC19_S2 63
> +#define R_MIPS_PCHI16 64
> +#define R_MIPS_PCLO16 65
> +#define R_MIPS16_26 100
> +#define R_MIPS16_GPREL 101
> +#define R_MIPS16_GOT16 102
> +#define R_MIPS16_CALL16 103
> +#define R_MIPS16_HI16 104
> +#define R_MIPS16_LO16 105
> +#define R_MIPS16_TLS_GD 106
> +#define R_MIPS16_TLS_LDM 107
> +#define R_MIPS16_TLS_DTPREL_HI16 108
> +#define R_MIPS16_TLS_DTPREL_LO16 109
> +#define R_MIPS16_TLS_GOTTPREL 110
> +#define R_MIPS16_TLS_TPREL_HI16 111
> +#define R_MIPS16_TLS_TPREL_LO16 112
> +#define R_MIPS16_PC16_S1 113
> #define R_MIPS_COPY 126
> #define R_MIPS_JUMP_SLOT 127
> +#define R_MIPS_RELATIVE 128
> +#define R_MICROMIPS_26_S1 133
> +#define R_MICROMIPS_HI16 134
> +#define R_MICROMIPS_LO16 135
> +#define R_MICROMIPS_GPREL16 136
> +#define R_MICROMIPS_LITERAL 137
> +#define R_MICROMIPS_GOT16 138
> +#define R_MICROMIPS_PC7_S1 139
> +#define R_MICROMIPS_PC10_S1 140
> +#define R_MICROMIPS_PC16_S1 141
> +#define R_MICROMIPS_CALL16 142
> +#define R_MICROMIPS_GOT_DISP 145
> +#define R_MICROMIPS_GOT_PAGE 146
> +#define R_MICROMIPS_GOT_OFST 147
> +#define R_MICROMIPS_GOT_HI16 148
> +#define R_MICROMIPS_GOT_LO16 149
> +#define R_MICROMIPS_SUB 150
> +#define R_MICROMIPS_HIGHER 151
> +#define R_MICROMIPS_HIGHEST 152
> +#define R_MICROMIPS_CALL_HI16 153
> +#define R_MICROMIPS_CALL_LO16 154
> +#define R_MICROMIPS_SCN_DISP 155
> +#define R_MICROMIPS_JALR 156
> +#define R_MICROMIPS_HI0_LO16 157
> +#define R_MICROMIPS_TLS_GD 162
> +#define R_MICROMIPS_TLS_LDM 163
> +#define R_MICROMIPS_TLS_DTPREL_HI16 164
> +#define R_MICROMIPS_TLS_DTPREL_LO16 165
> +#define R_MICROMIPS_TLS_GOTTPREL 166
> +#define R_MICROMIPS_TLS_TPREL_HI16 169
> +#define R_MICROMIPS_TLS_TPREL_LO16 170
> +#define R_MICROMIPS_GPREL7_S2 172
> +#define R_MICROMIPS_PC23_S2 173
> +#define R_MIPS_PC32 248
> +#define R_MIPS_EH 249
> +#define R_MIPS_GNU_REL16_S2 250
> +#define R_MIPS_GNU_VTINHERIT 253
> +#define R_MIPS_GNU_VTENTRY 254
> /* Keep this the last entry. */
> -#define R_MIPS_NUM 128
> +#define R_MIPS_NUM 255
>
> /* Legal values for p_type field of Elf32_Phdr. */
>
> @@ -2142,6 +2249,30 @@ typedef struct
> /* Masks for the flags1 word of an ABI flags structure. */
> #define MIPS_AFL_FLAGS1_ODDSPREG 1 /* Uses odd single-precision registers. */
>
> +/* Object attribute tags. */
> +enum
> +{
> + /* 0-3 are generic. */
> +
> + /* Floating-point ABI used by this object file. */
> + Tag_GNU_MIPS_ABI_FP = 4,
> +
> + /* MSA ABI used by this object file. */
> + Tag_GNU_MIPS_ABI_MSA = 8,
> +};
> +
> +/* Object attribute values. */
> +enum
> +{
> + /* Values defined for Tag_GNU_MIPS_ABI_MSA. */
> +
> + /* Not tagged or not using any ABIs affected by the differences. */
> + Val_GNU_MIPS_ABI_MSA_ANY = 0,
> +
> + /* Using 128-bit MSA. */
> + Val_GNU_MIPS_ABI_MSA_128 = 1,
> +};
> +
> /* Object attribute values. */
> enum
> {
> @@ -2161,8 +2292,11 @@ enum
> Val_GNU_MIPS_ABI_FP_64 = 6,
> /* Using -mips32r2 -mfp64 -mno-odd-spreg. */
> Val_GNU_MIPS_ABI_FP_64A = 7,
> + /* This is reserved for backward-compatibility with an earlier
> + implementation of the MIPS NaN2008 functionality. */
> + Val_GNU_MIPS_ABI_FP_NAN2008 = 8,
> /* Maximum allocated FP ABI value. */
> - Val_GNU_MIPS_ABI_FP_MAX = 7
> + Val_GNU_MIPS_ABI_FP_MAX = 8
> };
>
> /* HPPA specific definitions. */
> -- 
> 2.30.2
>