linux-kernel - Re: [PATCH V9 03/24] LoongArch: Add elf-related definitions

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Message-ID: <1cd3fc0d-b17c-30c9-445b-612761b96cd1@xen0n.name>
Date:   Sun, 1 May 2022 17:41:47 +0800
From:   WANG Xuerui <kernel@...0n.name>
To:     Huacai Chen <chenhuacai@...ngson.cn>,
        Arnd Bergmann <arnd@...db.de>,
        Andy Lutomirski <luto@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        David Airlie <airlied@...ux.ie>,
        Jonathan Corbet <corbet@....net>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-arch@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, Xuefeng Li <lixuefeng@...ngson.cn>,
        Yanteng Si <siyanteng@...ngson.cn>,
        Huacai Chen <chenhuacai@...il.com>,
        Guo Ren <guoren@...nel.org>, Xuerui Wang <kernel@...0n.name>,
        Jiaxun Yang <jiaxun.yang@...goat.com>
Subject: Re: [PATCH V9 03/24] LoongArch: Add elf-related definitions

Hi,

Commit message title could be "ELF" -- proper capitalization.

On 4/30/22 17:04, Huacai Chen wrote:
> Add elf-related definitions for LoongArch, including: EM_LOONGARCH,
> KEXEC_ARCH_LOONGARCH, AUDIT_ARCH_LOONGARCH32, AUDIT_ARCH_LOONGARCH64
> and NT_LOONGARCH_*.
>
> Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
> ---
>   include/uapi/linux/audit.h  | 2 ++
>   include/uapi/linux/elf-em.h | 1 +
>   include/uapi/linux/elf.h    | 5 +++++
>   include/uapi/linux/kexec.h  | 1 +
>   scripts/sorttable.c         | 5 +++++
>   5 files changed, 14 insertions(+)
>
> diff --git a/include/uapi/linux/audit.h b/include/uapi/linux/audit.h
> index 8eda133ca4c1..7c1dc818b1d5 100644
> --- a/include/uapi/linux/audit.h
> +++ b/include/uapi/linux/audit.h
> @@ -439,6 +439,8 @@ enum {
>   #define AUDIT_ARCH_UNICORE	(EM_UNICORE|__AUDIT_ARCH_LE)
>   #define AUDIT_ARCH_X86_64	(EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
>   #define AUDIT_ARCH_XTENSA	(EM_XTENSA)
> +#define AUDIT_ARCH_LOONGARCH32	(EM_LOONGARCH|__AUDIT_ARCH_LE)
> +#define AUDIT_ARCH_LOONGARCH64	(EM_LOONGARCH|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
>   
>   #define AUDIT_PERM_EXEC		1
>   #define AUDIT_PERM_WRITE	2
> diff --git a/include/uapi/linux/elf-em.h b/include/uapi/linux/elf-em.h
> index f47e853546fa..ef38c2bc5ab7 100644
> --- a/include/uapi/linux/elf-em.h
> +++ b/include/uapi/linux/elf-em.h
> @@ -51,6 +51,7 @@
>   #define EM_RISCV	243	/* RISC-V */
>   #define EM_BPF		247	/* Linux BPF - in-kernel virtual machine */
>   #define EM_CSKY		252	/* C-SKY */
> +#define EM_LOONGARCH	258	/* LoongArch */
>   #define EM_FRV		0x5441	/* Fujitsu FR-V */
>   
>   /*
> diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
> index 7ce993e6786c..1e0ae3f554f6 100644
> --- a/include/uapi/linux/elf.h
> +++ b/include/uapi/linux/elf.h
> @@ -436,6 +436,11 @@ typedef struct elf64_shdr {
>   #define NT_MIPS_DSP	0x800		/* MIPS DSP ASE registers */
>   #define NT_MIPS_FP_MODE	0x801		/* MIPS floating-point mode */
>   #define NT_MIPS_MSA	0x802		/* MIPS SIMD registers */
> +#define NT_LOONGARCH_CPUCFG	0xa00	/* LoongArch CPU config registers */
> +#define NT_LOONGARCH_CSR	0xa01	/* LoongArch control and status registers */
> +#define NT_LOONGARCH_LSX	0xa02	/* LoongArch Loongson SIMD Extension registers */
> +#define NT_LOONGARCH_LASX	0xa03	/* LoongArch Loongson Advanced SIMD Extension registers */
> +#define NT_LOONGARCH_LBT	0xa04	/* LoongArch Loongson Binary Translation registers */
These are named NT_LARCH_* in binutils source, better keep consistent?
>   
>   /* Note types with note name "GNU" */
>   #define NT_GNU_PROPERTY_TYPE_0	5
> diff --git a/include/uapi/linux/kexec.h b/include/uapi/linux/kexec.h
> index fb7e2ef60825..981016e05cfa 100644
> --- a/include/uapi/linux/kexec.h
> +++ b/include/uapi/linux/kexec.h
> @@ -43,6 +43,7 @@
>   #define KEXEC_ARCH_MIPS    ( 8 << 16)
>   #define KEXEC_ARCH_AARCH64 (183 << 16)
>   #define KEXEC_ARCH_RISCV   (243 << 16)
> +#define KEXEC_ARCH_LOONGARCH	(258 << 16)
>   
>   /* The artificial cap on the number of segments passed to kexec_load. */
>   #define KEXEC_SEGMENT_MAX 16
> diff --git a/scripts/sorttable.c b/scripts/sorttable.c
> index d00504c5f530..fba40e99f354 100644
> --- a/scripts/sorttable.c
> +++ b/scripts/sorttable.c
> @@ -60,6 +60,10 @@
>   #define EM_RISCV	243
>   #endif
>   
> +#ifndef EM_LOONGARCH
> +#define EM_LOONGARCH	258
> +#endif
> +
>   static uint32_t (*r)(const uint32_t *);
>   static uint16_t (*r2)(const uint16_t *);
>   static uint64_t (*r8)(const uint64_t *);
> @@ -313,6 +317,7 @@ static int do_file(char const *const fname, void *addr)
>   	case EM_ARCOMPACT:
>   	case EM_ARCV2:
>   	case EM_ARM:
> +	case EM_LOONGARCH:
>   	case EM_MICROBLAZE:
>   	case EM_MIPS:
>   	case EM_XTENSA: