66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
/*
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* Copyright (c) 2013-2014 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 Xtensa kernel structure member offset definition file
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*
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* This module is responsible for the generation of the absolute symbols whose
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* value represents the member offsets for various Xtensa kernel
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* structures.
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*
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* All of the absolute symbols defined by this module will be present in the
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* final kernel or kernel ELF image (due to the linker's reference to
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* the _OffsetAbsSyms symbol).
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*
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* INTERNAL
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* It is NOT necessary to define the offset for every member of a structure.
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* Typically, only those members that are accessed by assembly language routines
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* are defined; however, it doesn't hurt to define all fields for the sake of
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* completeness.
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*/
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#include <gen_offset.h> /* located in kernel/arch/common/include */
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/* list of headers that define whose structure offsets will be generated */
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#include <kernel_structs.h>
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#include <kernel_offsets.h>
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/* Xtensa-specific k_thread structure member offsets */
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GEN_OFFSET_SYM(_callee_saved_t, topOfStack);
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GEN_OFFSET_SYM(_callee_saved_t, retval);
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GEN_OFFSET_SYM(_thread_arch_t, preempCoprocReg);
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#if XCHAL_CP_NUM > 0
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GEN_OFFSET_SYM(tPreempCoprocReg, cpStack);
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#endif
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/* Xtensa-specific _thread_arch_t structure member offsets */
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GEN_OFFSET_SYM(_thread_arch_t, flags);
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#ifdef CONFIG_THREAD_CUSTOM_DATA
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GEN_OFFSET_SYM(_thread_arch_t, custom_data);
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#endif
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/* Xtensa-specific ESF structure member offsets */
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GEN_OFFSET_SYM(__esf_t, sp);
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GEN_OFFSET_SYM(__esf_t, pc);
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/* size of the entire __esf_t structure */
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GEN_ABSOLUTE_SYM(____esf_t_SIZEOF, sizeof(__esf_t));
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/* size of the entire preempt registers structure */
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GEN_ABSOLUTE_SYM(__tPreempt_SIZEOF, sizeof(_caller_saved_t));
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/* size of the struct k_thread structure without save area for coproc regs */
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GEN_ABSOLUTE_SYM(_K_THREAD_NO_FLOAT_SIZEOF,
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sizeof(struct k_thread) - sizeof(tCoopCoprocReg) -
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sizeof(tPreempCoprocReg) + XT_CP_DESCR_SIZE);
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GEN_ABS_SYM_END
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