178 lines
3.5 KiB
C
178 lines
3.5 KiB
C
/*
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* Copyright (c) 2014-2016 Wind River Systems, Inc.
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*
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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
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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 ARCv2 processor 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
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* symbols" 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 <vector_table.h>
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#ifndef _ASMLANGUAGE
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#include <kernel.h>
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#include <nano_internal.h>
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#include <stdint.h>
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#include <misc/util.h>
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#include <misc/dlist.h>
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#endif
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#ifndef _ASMLANGUAGE
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struct _caller_saved {
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/*
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* Saved on the stack as part of handling a regular IRQ or by the
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* kernel when calling the FIRQ return code.
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*/
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};
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typedef struct _caller_saved _caller_saved_t;
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struct _irq_stack_frame {
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uint32_t r0;
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uint32_t r1;
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uint32_t r2;
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uint32_t r3;
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uint32_t r4;
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uint32_t r5;
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uint32_t r6;
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uint32_t r7;
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uint32_t r8;
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uint32_t r9;
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uint32_t r10;
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uint32_t r11;
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uint32_t r12;
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uint32_t r13;
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uint32_t blink;
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uint32_t lp_end;
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uint32_t lp_start;
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uint32_t lp_count;
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#ifdef CONFIG_CODE_DENSITY
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/*
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* Currently unsupported. This is where those registers are
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* automatically pushed on the stack by the CPU when taking a regular
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* IRQ.
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*/
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uint32_t ei_base;
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uint32_t ldi_base;
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uint32_t jli_base;
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#endif
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uint32_t pc;
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uint32_t status32;
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};
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typedef struct _irq_stack_frame _isf_t;
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struct _callee_saved {
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uint32_t sp; /* r28 */
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};
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typedef struct _callee_saved _callee_saved_t;
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/* callee-saved registers pushed on the stack, not in k_thread */
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struct _callee_saved_stack {
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uint32_t r13;
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uint32_t r14;
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uint32_t r15;
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uint32_t r16;
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uint32_t r17;
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uint32_t r18;
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uint32_t r19;
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uint32_t r20;
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uint32_t r21;
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uint32_t r22;
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uint32_t r23;
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uint32_t r24;
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uint32_t r25;
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uint32_t r26;
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uint32_t fp; /* r27 */
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/* r28 is the stack pointer and saved separately */
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/* r29 is ILINK and does not need to be saved */
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uint32_t r30;
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/*
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* No need to save r31 (blink), it's either alread pushed as the pc or
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* blink on an irq stack frame.
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*/
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};
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typedef struct _callee_saved_stack _callee_saved_stack_t;
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#endif /* _ASMLANGUAGE */
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/* stacks */
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#define STACK_ALIGN_SIZE 4
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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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/*
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* Reason a thread has relinquished control: fibers can only be in the NONE
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* or COOP state, tasks can be one in the four.
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*/
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#define _CAUSE_NONE 0
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#define _CAUSE_COOP 1
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#define _CAUSE_RIRQ 2
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#define _CAUSE_FIRQ 3
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#ifndef _ASMLANGUAGE
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struct _thread_arch {
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/* interrupt key when relinquishing control */
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uint32_t intlock_key;
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/* one of the _CAUSE_xxxx definitions above */
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int relinquish_cause;
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/* return value from _Swap */
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unsigned int return_value;
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#ifdef CONFIG_ARC_STACK_CHECKING
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/* top of stack for hardware stack checking */
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uint32_t stack_top;
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#endif
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};
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typedef struct _thread_arch _thread_arch_t;
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struct _kernel_arch {
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char *rirq_sp; /* regular IRQ stack pointer base */
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/*
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* FIRQ stack pointer is installed once in the second bank's SP, so
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* there is no need to track it in _kernel.
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*/
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};
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typedef struct _kernel_arch _kernel_arch_t;
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#endif /* _ASMLANGUAGE */
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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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