Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 143 insertions, 0 deletions

diff --git a/arch/riscv/include/asm/elf.h b/arch/riscv/include/asm/elf.h
new file mode 100644
index 000000000..e7acffdf2
--- /dev/null
+++ b/arch/riscv/include/asm/elf.h
@@ -0,0 +1,143 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
+ * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
+ * Copyright (C) 2012 Regents of the University of California
+ */
+
+#ifndef _ASM_RISCV_ELF_H
+#define _ASM_RISCV_ELF_H
+
+#include <uapi/linux/elf.h>
+#include <linux/compat.h>
+#include <uapi/asm/elf.h>
+#include <asm/auxvec.h>
+#include <asm/byteorder.h>
+#include <asm/cacheinfo.h>
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_ARCH	EM_RISCV
+
+#ifndef ELF_CLASS
+#ifdef CONFIG_64BIT
+#define ELF_CLASS	ELFCLASS64
+#else
+#define ELF_CLASS	ELFCLASS32
+#endif
+#endif
+
+#define ELF_DATA	ELFDATA2LSB
+
+/*
+ * This is used to ensure we don't load something for the wrong architecture.
+ */
+#define elf_check_arch(x) (((x)->e_machine == EM_RISCV) && \
+			   ((x)->e_ident[EI_CLASS] == ELF_CLASS))
+
+extern bool compat_elf_check_arch(Elf32_Ehdr *hdr);
+#define compat_elf_check_arch	compat_elf_check_arch
+
+#define CORE_DUMP_USE_REGSET
+#define ELF_EXEC_PAGESIZE	(PAGE_SIZE)
+
+/*
+ * This is the location that an ET_DYN program is loaded if exec'ed.  Typical
+ * use of this is to invoke "./ld.so someprog" to test out a new version of
+ * the loader.  We need to make sure that it is out of the way of the program
+ * that it will "exec", and that there is sufficient room for the brk.
+ */
+#define ELF_ET_DYN_BASE		((TASK_SIZE / 3) * 2)
+
+#ifdef CONFIG_64BIT
+#ifdef CONFIG_COMPAT
+#define STACK_RND_MASK		(test_thread_flag(TIF_32BIT) ? \
+				 0x7ff >> (PAGE_SHIFT - 12) : \
+				 0x3ffff >> (PAGE_SHIFT - 12))
+#else
+#define STACK_RND_MASK		(0x3ffff >> (PAGE_SHIFT - 12))
+#endif
+#endif
+/*
+ * This yields a mask that user programs can use to figure out what
+ * instruction set this CPU supports.  This could be done in user space,
+ * but it's not easy, and we've already done it here.
+ */
+#define ELF_HWCAP	(elf_hwcap)
+extern unsigned long elf_hwcap;
+
+/*
+ * This yields a string that ld.so will use to load implementation
+ * specific libraries for optimization.  This is more specific in
+ * intent than poking at uname or /proc/cpuinfo.
+ */
+#define ELF_PLATFORM	(NULL)
+
+#define COMPAT_ELF_PLATFORM	(NULL)
+
+#ifdef CONFIG_MMU
+#define ARCH_DLINFO						\
+do {								\
+	/*							\
+	 * Note that we add ulong after elf_addr_t because	\
+	 * casting current->mm->context.vdso triggers a cast	\
+	 * warning of cast from pointer to integer for		\
+	 * COMPAT ELFCLASS32.					\
+	 */							\
+	NEW_AUX_ENT(AT_SYSINFO_EHDR,				\
+		(elf_addr_t)(ulong)current->mm->context.vdso);	\
+	NEW_AUX_ENT(AT_L1I_CACHESIZE,				\
+		get_cache_size(1, CACHE_TYPE_INST));		\
+	NEW_AUX_ENT(AT_L1I_CACHEGEOMETRY,			\
+		get_cache_geometry(1, CACHE_TYPE_INST));	\
+	NEW_AUX_ENT(AT_L1D_CACHESIZE,				\
+		get_cache_size(1, CACHE_TYPE_DATA));		\
+	NEW_AUX_ENT(AT_L1D_CACHEGEOMETRY,			\
+		get_cache_geometry(1, CACHE_TYPE_DATA));	\
+	NEW_AUX_ENT(AT_L2_CACHESIZE,				\
+		get_cache_size(2, CACHE_TYPE_UNIFIED));		\
+	NEW_AUX_ENT(AT_L2_CACHEGEOMETRY,			\
+		get_cache_geometry(2, CACHE_TYPE_UNIFIED));	\
+	NEW_AUX_ENT(AT_L3_CACHESIZE,				\
+		get_cache_size(3, CACHE_TYPE_UNIFIED));		\
+	NEW_AUX_ENT(AT_L3_CACHEGEOMETRY,			\
+		get_cache_geometry(3, CACHE_TYPE_UNIFIED));	\
+} while (0)
+#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
+struct linux_binprm;
+extern int arch_setup_additional_pages(struct linux_binprm *bprm,
+	int uses_interp);
+#endif /* CONFIG_MMU */
+
+#define ELF_CORE_COPY_REGS(dest, regs)			\
+do {							\
+	*(struct user_regs_struct *)&(dest) =		\
+		*(struct user_regs_struct *)regs;	\
+} while (0);
+
+#ifdef CONFIG_COMPAT
+
+#define SET_PERSONALITY(ex)					\
+do {    if ((ex).e_ident[EI_CLASS] == ELFCLASS32)		\
+		set_thread_flag(TIF_32BIT);			\
+	else							\
+		clear_thread_flag(TIF_32BIT);			\
+	if (personality(current->personality) != PER_LINUX32)	\
+		set_personality(PER_LINUX |			\
+			(current->personality & (~PER_MASK)));	\
+} while (0)
+
+#define COMPAT_ELF_ET_DYN_BASE		((TASK_SIZE_32 / 3) * 2)
+
+/* rv32 registers */
+typedef compat_ulong_t			compat_elf_greg_t;
+typedef compat_elf_greg_t		compat_elf_gregset_t[ELF_NGREG];
+
+extern int compat_arch_setup_additional_pages(struct linux_binprm *bprm,
+					      int uses_interp);
+#define compat_arch_setup_additional_pages \
+				compat_arch_setup_additional_pages
+
+#endif /* CONFIG_COMPAT */
+#endif /* _ASM_RISCV_ELF_H */