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arch/x86: refactor kernel_arch_data.h

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Some of this is 32-bit specific, some applies to all subarchitectures.
A preliminary attempt is made to refactor and place 32-bit-specific
portions in ia32/kernel_arch_data.h.

Signed-off-by: Charles E. Youse <charles.youse@intel.com>
This commit is contained in:
Charles E. Youse 2019-06-29 13:01:13 -07:00 • committed by Anas Nashif
commit aa6d5b43f2
2 changed files with 107 additions and 94 deletions
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102
arch/x86/include/ia32/kernel_arch_data.h Normal file
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/*
* Copyright (c) 2010-2014 Wind River Systems, Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief Private kernel definitions (IA-32)
*
* This file contains private kernel structures definitions and various
* other definitions for the Intel Architecture 32 bit (IA-32) processor
* architecture.
* The header include/kernel.h contains the public kernel interface
* definitions, with include/arch/x86/ia32/arch.h supplying the
* IA-32 specific portions of the public kernel interface.
*
* This file is also included by assembly language files which must #define
* _ASMLANGUAGE before including this header file. Note that kernel
* assembly source files obtains structure offset values via "absolute symbols"
* in the offsets.o module.
*/
/* this file is only meant to be included by kernel_structs.h */
#ifndef ZEPHYR_ARCH_X86_INCLUDE_IA32_KERNEL_ARCH_DATA_H_
#define ZEPHYR_ARCH_X86_INCLUDE_IA32_KERNEL_ARCH_DATA_H_
#include <toolchain.h>
#include <linker/sections.h>
#include <ia32/exception.h>
#include <kernel_arch_thread.h>
#include <sys/util.h>
#ifndef _ASMLANGUAGE
#include <kernel.h>
#include <kernel_internal.h>
#include <zephyr/types.h>
#include <sys/dlist.h>
#endif
/* Some configurations require that the stack/registers be adjusted before
* z_thread_entry. See discussion in swap.S for z_x86_thread_entry_wrapper()
*/
#if defined(CONFIG_X86_IAMCU) || defined(CONFIG_DEBUG_INFO)
#define _THREAD_WRAPPER_REQUIRED
#endif
/* increase to 16 bytes (or more?) to support SSE/SSE2 instructions? */
#define STACK_ALIGN_SIZE 4
/* x86 Bitmask definitions for struct k_thread.thread_state */
/* executing context is interrupt handler */
#define _INT_ACTIVE (1 << 7)
/* executing context is exception handler */
#define _EXC_ACTIVE (1 << 6)
#define _INT_OR_EXC_MASK (_INT_ACTIVE | _EXC_ACTIVE)
/* end - states */
#if defined(CONFIG_LAZY_FP_SHARING) && defined(CONFIG_SSE)
#define _FP_USER_MASK (K_FP_REGS | K_SSE_REGS)
#elif defined(CONFIG_LAZY_FP_SHARING)
#define _FP_USER_MASK (K_FP_REGS)
#endif
/*
* EFLAGS value to utilize for the initial context: IF=1.
*/
#define EFLAGS_INITIAL 0x00000200U
/* Enable paging and write protection */
#define CR0_PG_WP_ENABLE 0x80010000
/* Set the 5th bit in CR4 */
#define CR4_PAE_ENABLE 0x00000020
#ifndef _ASMLANGUAGE
#include <sys/util.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _THREAD_WRAPPER_REQUIRED
extern void z_x86_thread_entry_wrapper(k_thread_entry_t entry,
void *p1, void *p2, void *p3);
#endif /* _THREAD_WRAPPER_REQUIRED */
#ifdef __cplusplus
}
#endif
#endif /* _ASMLANGUAGE */
#endif /* ZEPHYR_ARCH_X86_INCLUDE_IA32_KERNEL_ARCH_DATA_H_ */