73abd32a7d
Historically, space for struct k_thread was always carved out of the thread's stack region. However, we want more control on where this data will reside; in memory protection scenarios the stack may only be used for actual stack data and nothing else. On some platforms (particularly ARM), including kernel_arch_data.h from the toplevel kernel.h exposes intractable circular dependency issues. We create a new per-arch header "kernel_arch_thread.h" with very limited scope; it only defines the three data structures necessary to instantiate the arch-specific bits of a struct k_thread. Change-Id: I3a55b4ed4270512e58cf671f327bb033ad7f4a4f Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/*
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* Copyright (c) 2016 Wind River Systems, Inc.
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* Copyright (c) 2016 Cadence Design Systems, Inc.
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief Private kernel definitions (XTENSA)
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*
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* This file contains private kernel structures definitions and various
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* other definitions for the XTENSA processors family architecture.
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*
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* This file is also included by assembly language files which must #define
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* _ASMLANGUAGE before including this header file. Note that kernel
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* assembly source files obtains structure offset values via "absolute symbols"
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* in the offsets.o module.
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*/
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#ifndef _kernel_arch_data__h_
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#define _kernel_arch_data__h_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <toolchain.h>
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#include <sections.h>
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#include <arch/cpu.h>
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#include <kernel_arch_thread.h>
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#if !defined(_ASMLANGUAGE) && !defined(__ASSEMBLER__)
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#include <kernel.h> /* public kernel API */
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#include <nano_internal.h>
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#include <zephyr/types.h>
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#include <misc/dlist.h>
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#include <misc/util.h>
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/* Bitmask definitions for the struct k_thread->flags bit field */
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/* executing context is interrupt handler */
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#define INT_ACTIVE (1 << 1)
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/* executing context is exception handler */
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#define EXC_ACTIVE (1 << 2)
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/* thread uses floating point unit */
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#define USE_FP 0x010
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typedef struct __esf __esf_t;
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struct _kernel_arch {
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#if defined(CONFIG_DEBUG_INFO)
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NANO_ISF *isf; /* ptr to interrupt stack frame */
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#endif
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};
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typedef struct _kernel_arch _kernel_arch_t;
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#endif /*! _ASMLANGUAGE && ! __ASSEMBLER__ */
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/* stacks */
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#define STACK_ROUND_UP(x) ROUND_UP(x, STACK_ALIGN_SIZE)
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#define STACK_ROUND_DOWN(x) ROUND_DOWN(x, STACK_ALIGN_SIZE)
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#ifdef __cplusplus
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}
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#endif
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#endif /* _kernel_arch_data__h_ */
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