arch/arm/core/offsets/offsets.c

/*
 * Copyright (c) 2013-2014 Wind River Systems, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @file
 * @brief ARM nano kernel structure member offset definition file
 *
 * This module is responsible for the generation of the absolute symbols whose
 * value represents the member offsets for various ARM nanokernel
 * structures.
 *
 * All of the absolute symbols defined by this module will be present in the
 * final microkernel or nanokernel ELF image (due to the linker's reference to
 * the _OffsetAbsSyms symbol).
 *
 * INTERNAL
 * It is NOT necessary to define the offset for every member of a structure.
 * Typically, only those members that are accessed by assembly language routines
 * are defined; however, it doesn't hurt to define all fields for the sake of
 * completeness.
 */

#include <gen_offset.h>
#include <nano_private.h>
#include <nano_offsets.h>

/* ARM-specific tNANO structure member offsets */

GEN_OFFSET_SYM(tNANO, flags);
#ifdef CONFIG_ADVANCED_POWER_MANAGEMENT
GEN_OFFSET_SYM(tNANO, idle);
#endif /* CONFIG_ADVANCED_POWER_MANAGEMENT */

/* ARM-specific struct tcs structure member offsets */

GEN_OFFSET_SYM(tTCS, basepri);
#ifdef CONFIG_THREAD_CUSTOM_DATA
GEN_OFFSET_SYM(tTCS, custom_data);
#endif

/* ARM-specific ESF structure member offsets */

GEN_OFFSET_SYM(tESF, a1);
GEN_OFFSET_SYM(tESF, a2);
GEN_OFFSET_SYM(tESF, a3);
GEN_OFFSET_SYM(tESF, a4);
GEN_OFFSET_SYM(tESF, ip);
GEN_OFFSET_SYM(tESF, lr);
GEN_OFFSET_SYM(tESF, pc);
GEN_OFFSET_SYM(tESF, xpsr);

/* size of the entire tESF structure */

GEN_ABSOLUTE_SYM(__tESF_SIZEOF, sizeof(tESF));

/* ARM-specific preempt registers structure member offsets */

GEN_OFFSET_SYM(tPreempt, v1);
GEN_OFFSET_SYM(tPreempt, v2);
GEN_OFFSET_SYM(tPreempt, v3);
GEN_OFFSET_SYM(tPreempt, v4);
GEN_OFFSET_SYM(tPreempt, v5);
GEN_OFFSET_SYM(tPreempt, v6);
GEN_OFFSET_SYM(tPreempt, v7);
GEN_OFFSET_SYM(tPreempt, v8);
GEN_OFFSET_SYM(tPreempt, psp);

/* size of the entire preempt registers structure */

GEN_ABSOLUTE_SYM(__tPreempt_SIZEOF, sizeof(tPreempt));

/* size of the struct tcs structure sans save area for floating point regs */

GEN_ABSOLUTE_SYM(__tTCS_NOFLOAT_SIZEOF, sizeof(tTCS));

GEN_ABS_SYM_END