1 /* 2 * Copyright (c) 2010-2014 Wind River Systems, Inc. 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 /** 8 * @file 9 * @brief Private kernel definitions (IA-32) 10 * 11 * This file contains private kernel structures definitions and various 12 * other definitions for the Intel Architecture 32 bit (IA-32) processor 13 * architecture. 14 * The header include/zephyr/kernel.h contains the public kernel interface 15 * definitions, with include/zephyr/arch/x86/ia32/arch.h supplying the 16 * IA-32 specific portions of the public kernel interface. 17 * 18 * This file is also included by assembly language files which must #define 19 * _ASMLANGUAGE before including this header file. Note that kernel 20 * assembly source files obtains structure offset values via "absolute symbols" 21 * in the offsets.o module. 22 */ 23 24 /* this file is only meant to be included by kernel_structs.h */ 25 26 #ifndef ZEPHYR_ARCH_X86_INCLUDE_IA32_KERNEL_ARCH_DATA_H_ 27 #define ZEPHYR_ARCH_X86_INCLUDE_IA32_KERNEL_ARCH_DATA_H_ 28 29 #include <zephyr/toolchain.h> 30 #include <zephyr/linker/sections.h> 31 #include <ia32/exception.h> 32 #include <zephyr/sys/util.h> 33 #include <zephyr/arch/x86/cet.h> 34 35 #ifndef _ASMLANGUAGE 36 #include <zephyr/kernel.h> 37 #include <zephyr/types.h> 38 #include <zephyr/sys/dlist.h> 39 #endif 40 41 /* Some configurations require that the stack/registers be adjusted before 42 * z_thread_entry. See discussion in swap.S for z_x86_thread_entry_wrapper() 43 */ 44 #if defined(CONFIG_X86_DEBUG_INFO) 45 #define _THREAD_WRAPPER_REQUIRED 46 #endif 47 48 #if defined(CONFIG_LAZY_FPU_SHARING) && defined(CONFIG_X86_SSE) 49 #define _FP_USER_MASK (K_FP_REGS | K_SSE_REGS) 50 #elif defined(CONFIG_LAZY_FPU_SHARING) 51 #define _FP_USER_MASK (K_FP_REGS) 52 #endif 53 54 #ifndef _ASMLANGUAGE 55 56 57 #ifdef __cplusplus 58 extern "C" { 59 #endif 60 61 #ifdef _THREAD_WRAPPER_REQUIRED 62 extern void z_x86_thread_entry_wrapper(k_thread_entry_t entry, 63 void *p1, void *p2, void *p3); 64 #endif /* _THREAD_WRAPPER_REQUIRED */ 65 66 #ifdef CONFIG_THREAD_LOCAL_STORAGE 67 extern void z_x86_tls_update_gdt(struct k_thread *thread); 68 #endif 69 70 #ifdef __cplusplus 71 } 72 #endif 73 74 #endif /* _ASMLANGUAGE */ 75 76 #define X86_IRQ_SHADOW_STACK_DEFINE(name, size) \ 77 arch_thread_hw_shadow_stack_t Z_GENERIC_SECTION(.x86shadowstack) \ 78 __aligned(CONFIG_X86_CET_SHADOW_STACK_ALIGNMENT) \ 79 name[size / sizeof(arch_thread_hw_shadow_stack_t)] = \ 80 { [size / sizeof(arch_thread_hw_shadow_stack_t) - 4] = \ 81 (uintptr_t)name + size - 2 * sizeof(arch_thread_hw_shadow_stack_t), \ 82 [size / sizeof(arch_thread_hw_shadow_stack_t) - 3] = 0, \ 83 [size / sizeof(arch_thread_hw_shadow_stack_t) - 2] = 0, \ 84 } 85 86 #endif /* ZEPHYR_ARCH_X86_INCLUDE_IA32_KERNEL_ARCH_DATA_H_ */ 87
