修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/arch/arm64/include/asm/elf.h
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@@ -1,17 +1,6 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Copyright (C) 2012 ARM Ltd.
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
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  */
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 #ifndef __ASM_ELF_H
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 #define __ASM_ELF_H
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@@ -107,7 +96,28 @@
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  */
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 #define elf_check_arch(x)		((x)->e_machine == EM_AARCH64)
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98
 
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-#define elf_read_implies_exec(ex,stk)	(stk != EXSTACK_DISABLE_X)
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+/*
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+ * An executable for which elf_read_implies_exec() returns TRUE will
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+ * have the READ_IMPLIES_EXEC personality flag set automatically.
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+ *
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+ * The decision process for determining the results are:
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+ *
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+ *                CPU*: | arm32      | arm64      |
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+ * ELF:                 |            |            |
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+ * ---------------------|------------|------------|
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+ * missing PT_GNU_STACK | exec-all   | exec-none  |
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+ * PT_GNU_STACK == RWX  | exec-stack | exec-stack |
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+ * PT_GNU_STACK == RW   | exec-none  | exec-none  |
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+ *
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+ *  exec-all  : all PROT_READ user mappings are executable, except when
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+ *              backed by files on a noexec-filesystem.
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+ *  exec-none : only PROT_EXEC user mappings are executable.
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+ *  exec-stack: only the stack and PROT_EXEC user mappings are executable.
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+ *
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+ *  *all arm64 CPUs support NX, so there is no "lacks NX" column.
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+ *
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+ */
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+#define compat_elf_read_implies_exec(ex, stk)	(stk == EXSTACK_DEFAULT)
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 #define CORE_DUMP_USE_REGSET
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 #define ELF_EXEC_PAGESIZE	PAGE_SIZE
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@@ -117,11 +127,19 @@
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  * 64-bit, this is above 4GB to leave the entire 32-bit address
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  * space open for things that want to use the area for 32-bit pointers.
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  */
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+#ifdef CONFIG_ARM64_FORCE_52BIT
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 #define ELF_ET_DYN_BASE		(2 * TASK_SIZE_64 / 3)
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+#else
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+#define ELF_ET_DYN_BASE		(2 * DEFAULT_MAP_WINDOW_64 / 3)
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+#endif /* CONFIG_ARM64_FORCE_52BIT */
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 #ifndef __ASSEMBLY__
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137
 
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+#include <uapi/linux/elf.h>
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 #include <linux/bug.h>
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+#include <linux/errno.h>
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+#include <linux/fs.h>
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+#include <linux/types.h>
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 #include <asm/processor.h> /* for signal_minsigstksz, used by ARCH_DLINFO */
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 typedef unsigned long elf_greg_t;
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@@ -231,6 +249,52 @@
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 #endif /* CONFIG_COMPAT */
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+struct arch_elf_state {
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+	int flags;
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+};
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+
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+#define ARM64_ELF_BTI		(1 << 0)
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+
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+#define INIT_ARCH_ELF_STATE {			\
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+	.flags = 0,				\
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+}
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+
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+static inline int arch_parse_elf_property(u32 type, const void *data,
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+					  size_t datasz, bool compat,
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+					  struct arch_elf_state *arch)
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+{
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+	/* No known properties for AArch32 yet */
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+	if (IS_ENABLED(CONFIG_COMPAT) && compat)
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+		return 0;
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+
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+	if (type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) {
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+		const u32 *p = data;
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+
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+		if (datasz != sizeof(*p))
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+			return -ENOEXEC;
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+
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+		if (system_supports_bti() &&
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+		    (*p & GNU_PROPERTY_AARCH64_FEATURE_1_BTI))
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+			arch->flags |= ARM64_ELF_BTI;
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+	}
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+
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+	return 0;
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+}
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+
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+static inline int arch_elf_pt_proc(void *ehdr, void *phdr,
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+				   struct file *f, bool is_interp,
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+				   struct arch_elf_state *state)
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+{
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+	return 0;
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+}
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+
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+static inline int arch_check_elf(void *ehdr, bool has_interp,
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+				 void *interp_ehdr,
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+				 struct arch_elf_state *state)
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+{
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+	return 0;
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+}
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+
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 #endif /* !__ASSEMBLY__ */
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 #endif