From 61598093bbdd283a7edc367d900f223070ead8d2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 07:43:03 +0000
Subject: [PATCH] add ax88772C AX88772C_eeprom_tools
---
kernel/arch/arm64/include/asm/module.h | 68 ++++++++++++----------------------
1 files changed, 24 insertions(+), 44 deletions(-)
diff --git a/kernel/arch/arm64/include/asm/module.h b/kernel/arch/arm64/include/asm/module.h
index 97d0ef1..65fc16f 100644
--- a/kernel/arch/arm64/include/asm/module.h
+++ b/kernel/arch/arm64/include/asm/module.h
@@ -1,28 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2012 ARM Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ASM_MODULE_H
#define __ASM_MODULE_H
#include <asm-generic/module.h>
-#define MODULE_ARCH_VERMAGIC "aarch64"
-
#ifdef CONFIG_ARM64_MODULE_PLTS
struct mod_plt_sec {
- struct elf64_shdr *plt;
+ int plt_shndx;
int plt_num_entries;
int plt_max_entries;
};
@@ -32,14 +19,22 @@
struct mod_plt_sec init;
/* for CONFIG_DYNAMIC_FTRACE */
- struct plt_entry *ftrace_trampoline;
+ struct plt_entry *ftrace_trampolines;
+
+ /* for FIPS 140 certified kernel module */
+ const Elf64_Rela *text_relocations;
+ const Elf64_Rela *rodata_relocations;
+ int num_text_relocations;
+ int num_rodata_relocations;
};
#endif
-u64 module_emit_plt_entry(struct module *mod, void *loc, const Elf64_Rela *rela,
+u64 module_emit_plt_entry(struct module *mod, Elf64_Shdr *sechdrs,
+ void *loc, const Elf64_Rela *rela,
Elf64_Sym *sym);
-u64 module_emit_veneer_for_adrp(struct module *mod, void *loc, u64 val);
+u64 module_emit_veneer_for_adrp(struct module *mod, Elf64_Shdr *sechdrs,
+ void *loc, u64 val);
#ifdef CONFIG_RANDOMIZE_BASE
extern u64 module_alloc_base;
@@ -56,39 +51,24 @@
* is exactly what we are dealing with here, we are free to use x16
* as a scratch register in the PLT veneers.
*/
- __le32 mov0; /* movn x16, #0x.... */
- __le32 mov1; /* movk x16, #0x...., lsl #16 */
- __le32 mov2; /* movk x16, #0x...., lsl #32 */
+ __le32 adrp; /* adrp x16, .... */
+ __le32 add; /* add x16, x16, #0x.... */
__le32 br; /* br x16 */
};
-static inline struct plt_entry get_plt_entry(u64 val)
+static inline bool is_forbidden_offset_for_adrp(void *place)
{
- /*
- * MOVK/MOVN/MOVZ opcode:
- * +--------+------------+--------+-----------+-------------+---------+
- * | sf[31] | opc[30:29] | 100101 | hw[22:21] | imm16[20:5] | Rd[4:0] |
- * +--------+------------+--------+-----------+-------------+---------+
- *
- * Rd := 0x10 (x16)
- * hw := 0b00 (no shift), 0b01 (lsl #16), 0b10 (lsl #32)
- * opc := 0b11 (MOVK), 0b00 (MOVN), 0b10 (MOVZ)
- * sf := 1 (64-bit variant)
- */
- return (struct plt_entry){
- cpu_to_le32(0x92800010 | (((~val ) & 0xffff)) << 5),
- cpu_to_le32(0xf2a00010 | ((( val >> 16) & 0xffff)) << 5),
- cpu_to_le32(0xf2c00010 | ((( val >> 32) & 0xffff)) << 5),
- cpu_to_le32(0xd61f0200)
- };
+ return IS_ENABLED(CONFIG_ARM64_ERRATUM_843419) &&
+ cpus_have_const_cap(ARM64_WORKAROUND_843419) &&
+ ((u64)place & 0xfff) >= 0xff8;
}
-static inline bool plt_entries_equal(const struct plt_entry *a,
- const struct plt_entry *b)
+struct plt_entry get_plt_entry(u64 dst, void *pc);
+bool plt_entries_equal(const struct plt_entry *a, const struct plt_entry *b);
+
+static inline bool plt_entry_is_initialized(const struct plt_entry *e)
{
- return a->mov0 == b->mov0 &&
- a->mov1 == b->mov1 &&
- a->mov2 == b->mov2;
+ return e->adrp || e->add || e->br;
}
#endif /* __ASM_MODULE_H */
--
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