From: Julien Thierry <jthierry@redhat.com> To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: catalin.marinas@arm.com, will@kernel.org, ardb@kernel.org, masahiroy@kernel.org, keescook@chromium.org, michal.lkml@markovi.net, jpoimboe@redhat.com, peterz@infradead.org, mark.rutland@arm.com, broonie@kernel.org, linux-efi@vger.kernel.org, linux-hardening@vger.kernel.org, Julien Thierry <jthierry@redhat.com> Subject: [RFC PATCH 01/17] tools: Add some generic functions and headers Date: Wed, 20 Jan 2021 18:37:44 +0100 [thread overview] Message-ID: <20210120173800.1660730-2-jthierry@redhat.com> (raw) In-Reply-To: <20210120173800.1660730-1-jthierry@redhat.com> These will be needed to be able to use arm64 instruction decoder in userland tools. Signed-off-by: Julien Thierry <jthierry@redhat.com> --- tools/include/asm-generic/bitops/__ffs.h | 11 +++++++ tools/include/linux/kernel.h | 21 +++++++++++++ tools/include/linux/printk.h | 40 ++++++++++++++++++++++++ 3 files changed, 72 insertions(+) create mode 100644 tools/include/linux/printk.h diff --git a/tools/include/asm-generic/bitops/__ffs.h b/tools/include/asm-generic/bitops/__ffs.h index 9d1310519497..963f8a22212f 100644 --- a/tools/include/asm-generic/bitops/__ffs.h +++ b/tools/include/asm-generic/bitops/__ffs.h @@ -42,4 +42,15 @@ static __always_inline unsigned long __ffs(unsigned long word) return num; } +static inline unsigned long __ffs64(u64 word) +{ +#if BITS_PER_LONG == 32 + if (((u32)word) == 0UL) + return __ffs((u32)(word >> 32)) + 32; +#elif BITS_PER_LONG != 64 +#error BITS_PER_LONG not 32 or 64 +#endif + return __ffs((unsigned long)word); +} + #endif /* _TOOLS_LINUX_ASM_GENERIC_BITOPS___FFS_H_ */ diff --git a/tools/include/linux/kernel.h b/tools/include/linux/kernel.h index a7e54a08fb54..e748982ed5c1 100644 --- a/tools/include/linux/kernel.h +++ b/tools/include/linux/kernel.h @@ -114,6 +114,27 @@ int scnprintf_pad(char * buf, size_t size, const char * fmt, ...); #define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1) #define round_down(x, y) ((x) & ~__round_mask(x, y)) +/** + * upper_32_bits - return bits 32-63 of a number + * @n: the number we're accessing + * + * A basic shift-right of a 64- or 32-bit quantity. Use this to suppress + * the "right shift count >= width of type" warning when that quantity is + * 32-bits. + */ +#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16)) + +/** + * lower_32_bits - return bits 0-31 of a number + * @n: the number we're accessing + */ +#define lower_32_bits(n) ((u32)(n)) + +/* Inspired from ALIGN_*_KERNEL */ +#define __ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask)) +#define __ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a) - 1) +#define ALIGN_DOWN(x, a) __ALIGN((x) - ((a) - 1), (a)) + #define current_gfp_context(k) 0 #define synchronize_rcu() diff --git a/tools/include/linux/printk.h b/tools/include/linux/printk.h new file mode 100644 index 000000000000..515ebdc47e6e --- /dev/null +++ b/tools/include/linux/printk.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _TOOLS_LINUX_KERNEL_PRINTK_H_ +#define _TOOLS_LINUX_KERNEL_PRINTK_H_ + +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> + +#define printk(fmt, ...) fprintf(stdout, fmt, ##__VA_ARGS__) +#define pr_info printk +#define pr_notice printk +#define pr_cont printk + +#define pr_warn(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__) +#define pr_err pr_warn +#define pr_alert pr_warn +#define pr_emerg pr_warn +#define pr_crit pr_warn + +/* + * Dummy printk for disabled debugging statements to use whilst maintaining + * gcc's format checking. + */ +#define no_printk(fmt, ...) \ +({ \ + if (0) \ + printk(fmt, ##__VA_ARGS__); \ + 0; \ +}) + +/* pr_devel() should produce zero code unless DEBUG is defined */ +#ifdef DEBUG +#define pr_devel(fmt, ...) printk +#else +#define pr_devel(fmt, ...) no_printk +#endif + +#define pr_debug pr_devel + +#endif /* _TOOLS_LINUX_KERNEL_PRINTK_H_ */ -- 2.25.4
WARNING: multiple messages have this Message-ID (diff)
From: Julien Thierry <jthierry@redhat.com> To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: mark.rutland@arm.com, linux-efi@vger.kernel.org, michal.lkml@markovi.net, keescook@chromium.org, peterz@infradead.org, catalin.marinas@arm.com, masahiroy@kernel.org, broonie@kernel.org, linux-hardening@vger.kernel.org, jpoimboe@redhat.com, will@kernel.org, ardb@kernel.org, Julien Thierry <jthierry@redhat.com> Subject: [RFC PATCH 01/17] tools: Add some generic functions and headers Date: Wed, 20 Jan 2021 18:37:44 +0100 [thread overview] Message-ID: <20210120173800.1660730-2-jthierry@redhat.com> (raw) In-Reply-To: <20210120173800.1660730-1-jthierry@redhat.com> These will be needed to be able to use arm64 instruction decoder in userland tools. Signed-off-by: Julien Thierry <jthierry@redhat.com> --- tools/include/asm-generic/bitops/__ffs.h | 11 +++++++ tools/include/linux/kernel.h | 21 +++++++++++++ tools/include/linux/printk.h | 40 ++++++++++++++++++++++++ 3 files changed, 72 insertions(+) create mode 100644 tools/include/linux/printk.h diff --git a/tools/include/asm-generic/bitops/__ffs.h b/tools/include/asm-generic/bitops/__ffs.h index 9d1310519497..963f8a22212f 100644 --- a/tools/include/asm-generic/bitops/__ffs.h +++ b/tools/include/asm-generic/bitops/__ffs.h @@ -42,4 +42,15 @@ static __always_inline unsigned long __ffs(unsigned long word) return num; } +static inline unsigned long __ffs64(u64 word) +{ +#if BITS_PER_LONG == 32 + if (((u32)word) == 0UL) + return __ffs((u32)(word >> 32)) + 32; +#elif BITS_PER_LONG != 64 +#error BITS_PER_LONG not 32 or 64 +#endif + return __ffs((unsigned long)word); +} + #endif /* _TOOLS_LINUX_ASM_GENERIC_BITOPS___FFS_H_ */ diff --git a/tools/include/linux/kernel.h b/tools/include/linux/kernel.h index a7e54a08fb54..e748982ed5c1 100644 --- a/tools/include/linux/kernel.h +++ b/tools/include/linux/kernel.h @@ -114,6 +114,27 @@ int scnprintf_pad(char * buf, size_t size, const char * fmt, ...); #define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1) #define round_down(x, y) ((x) & ~__round_mask(x, y)) +/** + * upper_32_bits - return bits 32-63 of a number + * @n: the number we're accessing + * + * A basic shift-right of a 64- or 32-bit quantity. Use this to suppress + * the "right shift count >= width of type" warning when that quantity is + * 32-bits. + */ +#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16)) + +/** + * lower_32_bits - return bits 0-31 of a number + * @n: the number we're accessing + */ +#define lower_32_bits(n) ((u32)(n)) + +/* Inspired from ALIGN_*_KERNEL */ +#define __ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask)) +#define __ALIGN(x, a) __ALIGN_MASK(x, (typeof(x))(a) - 1) +#define ALIGN_DOWN(x, a) __ALIGN((x) - ((a) - 1), (a)) + #define current_gfp_context(k) 0 #define synchronize_rcu() diff --git a/tools/include/linux/printk.h b/tools/include/linux/printk.h new file mode 100644 index 000000000000..515ebdc47e6e --- /dev/null +++ b/tools/include/linux/printk.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _TOOLS_LINUX_KERNEL_PRINTK_H_ +#define _TOOLS_LINUX_KERNEL_PRINTK_H_ + +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> + +#define printk(fmt, ...) fprintf(stdout, fmt, ##__VA_ARGS__) +#define pr_info printk +#define pr_notice printk +#define pr_cont printk + +#define pr_warn(fmt, ...) fprintf(stderr, fmt, ##__VA_ARGS__) +#define pr_err pr_warn +#define pr_alert pr_warn +#define pr_emerg pr_warn +#define pr_crit pr_warn + +/* + * Dummy printk for disabled debugging statements to use whilst maintaining + * gcc's format checking. + */ +#define no_printk(fmt, ...) \ +({ \ + if (0) \ + printk(fmt, ##__VA_ARGS__); \ + 0; \ +}) + +/* pr_devel() should produce zero code unless DEBUG is defined */ +#ifdef DEBUG +#define pr_devel(fmt, ...) printk +#else +#define pr_devel(fmt, ...) no_printk +#endif + +#define pr_debug pr_devel + +#endif /* _TOOLS_LINUX_KERNEL_PRINTK_H_ */ -- 2.25.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-01-20 18:59 UTC|newest] Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-20 17:37 [RFC PATCH 00/17] objtool: add base support for arm64 Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-20 17:37 ` Julien Thierry [this message] 2021-01-20 17:37 ` [RFC PATCH 01/17] tools: Add some generic functions and headers Julien Thierry 2021-01-20 17:37 ` [RFC PATCH 02/17] tools: arm64: Make aarch64 instruction decoder available to tools Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-20 17:37 ` [RFC PATCH 03/17] tools: bug: Remove duplicate definition Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-20 17:37 ` [RFC PATCH 04/17] objtool: arm64: Add base definition for arm64 backend Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-20 17:37 ` [RFC PATCH 05/17] objtool: arm64: Decode add/sub instructions Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-20 17:37 ` [RFC PATCH 06/17] objtool: arm64: Decode jump and call related instructions Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-20 17:37 ` [RFC PATCH 07/17] objtool: arm64: Decode other system instructions Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-20 17:37 ` [RFC PATCH 08/17] objtool: arm64: Decode load/store instructions Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-20 17:37 ` [RFC PATCH 09/17] objtool: arm64: Decode LDR instructions Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-20 17:37 ` [RFC PATCH 10/17] objtool: arm64: Accept padding in code sections Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-20 17:37 ` [RFC PATCH 11/17] efi: libstub: Ignore relocations for .discard sections Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-20 17:37 ` [RFC PATCH 12/17] gcc-plugins: objtool: Add plugin to detect switch table on arm64 Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-27 22:15 ` Nick Desaulniers 2021-01-27 22:15 ` Nick Desaulniers 2021-01-27 23:26 ` Josh Poimboeuf 2021-01-27 23:26 ` Josh Poimboeuf 2021-01-29 18:10 ` Nick Desaulniers 2021-01-29 18:10 ` Nick Desaulniers 2021-02-01 21:44 ` Josh Poimboeuf 2021-02-01 21:44 ` Josh Poimboeuf 2021-02-01 23:17 ` Nick Desaulniers 2021-02-01 23:17 ` Nick Desaulniers 2021-02-02 0:02 ` Josh Poimboeuf 2021-02-02 0:02 ` Josh Poimboeuf 2021-02-02 14:24 ` David Laight 2021-02-02 14:24 ` David Laight 2021-02-02 22:33 ` Nick Desaulniers 2021-02-02 22:33 ` Nick Desaulniers 2021-02-02 23:36 ` Josh Poimboeuf 2021-02-02 23:36 ` Josh Poimboeuf 2021-02-02 23:52 ` Nick Desaulniers 2021-02-02 23:52 ` Nick Desaulniers 2021-02-02 8:57 ` Julien Thierry 2021-02-02 8:57 ` Julien Thierry 2021-02-02 23:01 ` Nick Desaulniers 2021-02-02 23:01 ` Nick Desaulniers 2021-02-03 0:14 ` Josh Poimboeuf 2021-02-03 0:14 ` Josh Poimboeuf 2021-02-03 11:57 ` Peter Zijlstra 2021-02-03 11:57 ` Peter Zijlstra 2021-02-03 13:04 ` Mark Brown 2021-02-03 13:04 ` Mark Brown 2021-02-03 13:58 ` Mark Rutland 2021-02-03 13:58 ` Mark Rutland 2021-02-03 8:11 ` Julien Thierry 2021-02-03 8:11 ` Julien Thierry 2021-02-09 16:30 ` Daniel Kiss 2021-02-09 16:30 ` Daniel Kiss 2021-01-20 17:37 ` [RFC PATCH 13/17] objtool: arm64: Implement functions to add switch tables alternatives Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-20 17:37 ` [RFC PATCH 14/17] objtool: arm64: Cache section with switch table information Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-20 17:37 ` [RFC PATCH 15/17] objtool: arm64: Handle supported relocations in alternatives Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-20 17:37 ` [RFC PATCH 16/17] objtool: arm64: Ignore replacement section for alternative callback Julien Thierry 2021-01-20 17:37 ` Julien Thierry 2021-01-20 17:38 ` [RFC PATCH 17/17] objtool: arm64: Enable stack validation for arm64 Julien Thierry 2021-01-20 17:38 ` Julien Thierry 2021-01-21 5:39 ` kernel test robot 2021-01-21 9:03 ` [RFC PATCH 00/17] objtool: add base support " Ard Biesheuvel 2021-01-21 9:03 ` Ard Biesheuvel 2021-01-21 10:26 ` Julien Thierry 2021-01-21 10:26 ` Julien Thierry 2021-01-21 11:08 ` Ard Biesheuvel 2021-01-21 11:08 ` Ard Biesheuvel 2021-01-21 11:23 ` Peter Zijlstra 2021-01-21 11:23 ` Peter Zijlstra 2021-01-21 11:48 ` Ard Biesheuvel 2021-01-21 11:48 ` Ard Biesheuvel 2021-01-21 18:54 ` Josh Poimboeuf 2021-01-21 18:54 ` Josh Poimboeuf 2021-01-22 17:43 ` Mark Brown 2021-01-22 17:43 ` Mark Brown 2021-01-22 17:54 ` Ard Biesheuvel 2021-01-22 17:54 ` Ard Biesheuvel 2021-01-28 22:10 ` Madhavan T. Venkataraman 2021-01-28 22:10 ` Madhavan T. Venkataraman 2021-01-29 15:47 ` Mark Brown 2021-01-22 21:15 ` Madhavan T. Venkataraman 2021-01-22 21:15 ` Madhavan T. Venkataraman 2021-01-22 21:43 ` Ard Biesheuvel 2021-01-22 21:43 ` Ard Biesheuvel 2021-01-22 21:44 ` Madhavan T. Venkataraman 2021-01-22 21:44 ` Madhavan T. Venkataraman 2021-01-25 21:19 ` Josh Poimboeuf 2021-01-25 21:19 ` Josh Poimboeuf 2021-01-22 21:16 ` Madhavan T. Venkataraman 2021-01-22 21:16 ` Madhavan T. Venkataraman 2021-01-21 13:23 ` Julien Thierry 2021-01-21 13:23 ` Julien Thierry 2021-01-21 14:23 ` Mark Brown 2021-01-21 14:23 ` Mark Brown
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