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/*
* Copyright (c) 2013-2016 Wind River Systems, Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief Private kernel definitions (ARM)
*
* This file contains private kernel structures definitions and various
* other definitions for the ARM Cortex-M3 processor architecture.
*
* 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.
*/
#ifndef _kernel_arch_data__h_
#define _kernel_arch_data__h_
#ifdef __cplusplus
extern "C" {
#endif
#include <toolchain.h>
#include <sections.h>
#include <arch/cpu.h>
#ifndef _ASMLANGUAGE
#include <kernel.h>
#include <nano_internal.h>
#include <stdint.h>
#include <misc/dlist.h>
#include <atomic.h>
#endif
#ifndef _ASMLANGUAGE
struct _caller_saved {
/*
* Unused for Cortex-M, which automatically saves the necessary
* registers in its exception stack frame.
*
* For Cortex-A, this may be:
*
* uint32_t a1; // r0
* uint32_t a2; // r1
* uint32_t a3; // r2
* uint32_t a4; // r3
* uint32_t ip; // r12
* uint32_t lr; // r14
* uint32_t pc; // r15
* uint32_t xpsr;
*/
};
typedef struct _caller_saved _caller_saved_t;
struct _callee_saved {
uint32_t v1; /* r4 */
uint32_t v2; /* r5 */
uint32_t v3; /* r6 */
uint32_t v4; /* r7 */
uint32_t v5; /* r8 */
uint32_t v6; /* r9 */
uint32_t v7; /* r10 */
uint32_t v8; /* r11 */
uint32_t psp; /* r13 */
};
typedef struct _callee_saved _callee_saved_t;
typedef struct __esf _esf_t;
#endif /* _ASMLANGUAGE */
/* stacks */
#define STACK_ROUND_UP(x) ROUND_UP(x, STACK_ALIGN_SIZE)
#define STACK_ROUND_DOWN(x) ROUND_DOWN(x, STACK_ALIGN_SIZE)
#ifdef CONFIG_CPU_CORTEX_M
#include <cortex_m/stack.h>
#include <cortex_m/exc.h>
#endif
#ifndef _ASMLANGUAGE
#ifdef CONFIG_FLOAT
struct _preempt_float {
float s16;
float s17;
float s18;
float s19;
float s20;
float s21;
float s22;
float s23;
float s24;
float s25;
float s26;
float s27;
float s28;
float s29;
float s30;
float s31;
};
#endif
struct _thread_arch {
/* interrupt locking key */
uint32_t basepri;
/* r0 in stack frame cannot be written to reliably */
uint32_t swap_return_value;
#ifdef CONFIG_FLOAT
/*
* No cooperative floating point register set structure exists for
* the Cortex-M as it automatically saves the necessary registers
* in its exception stack frame.
*/
struct _preempt_float preempt_float;
#endif
};
typedef struct _thread_arch _thread_arch_t;
struct _kernel_arch {
/* empty */
};
typedef struct _kernel_arch _kernel_arch_t;
#endif /* _ASMLANGUAGE */
#ifdef __cplusplus
}
#endif
#endif /* _kernel_arch_data__h_ */
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