| /* |
| * Copyright (c) 2014-2016 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 Private kernel definitions |
| * |
| * This file contains private kernel structures definitions and various |
| * other definitions for the ARCv2 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> |
| #include <vector_table.h> |
| |
| #ifndef _ASMLANGUAGE |
| #include <kernel.h> |
| #include <nano_internal.h> |
| #include <stdint.h> |
| #include <misc/util.h> |
| #include <misc/dlist.h> |
| #endif |
| |
| #ifndef _ASMLANGUAGE |
| |
| struct _caller_saved { |
| /* |
| * Saved on the stack as part of handling a regular IRQ or by the |
| * kernel when calling the FIRQ return code. |
| */ |
| }; |
| |
| typedef struct _caller_saved _caller_saved_t; |
| |
| struct _irq_stack_frame { |
| uint32_t r0; |
| uint32_t r1; |
| uint32_t r2; |
| uint32_t r3; |
| uint32_t r4; |
| uint32_t r5; |
| uint32_t r6; |
| uint32_t r7; |
| uint32_t r8; |
| uint32_t r9; |
| uint32_t r10; |
| uint32_t r11; |
| uint32_t r12; |
| uint32_t r13; |
| uint32_t blink; |
| uint32_t lp_end; |
| uint32_t lp_start; |
| uint32_t lp_count; |
| #ifdef CONFIG_CODE_DENSITY |
| /* |
| * Currently unsupported. This is where those registers are |
| * automatically pushed on the stack by the CPU when taking a regular |
| * IRQ. |
| */ |
| uint32_t ei_base; |
| uint32_t ldi_base; |
| uint32_t jli_base; |
| #endif |
| uint32_t pc; |
| uint32_t status32; |
| }; |
| |
| typedef struct _irq_stack_frame _isf_t; |
| |
| struct _callee_saved { |
| uint32_t sp; /* r28 */ |
| }; |
| typedef struct _callee_saved _callee_saved_t; |
| |
| /* callee-saved registers pushed on the stack, not in k_thread */ |
| struct _callee_saved_stack { |
| uint32_t r13; |
| uint32_t r14; |
| uint32_t r15; |
| uint32_t r16; |
| uint32_t r17; |
| uint32_t r18; |
| uint32_t r19; |
| uint32_t r20; |
| uint32_t r21; |
| uint32_t r22; |
| uint32_t r23; |
| uint32_t r24; |
| uint32_t r25; |
| uint32_t r26; |
| uint32_t fp; /* r27 */ |
| /* r28 is the stack pointer and saved separately */ |
| /* r29 is ILINK and does not need to be saved */ |
| uint32_t r30; |
| /* |
| * No need to save r31 (blink), it's either alread pushed as the pc or |
| * blink on an irq stack frame. |
| */ |
| }; |
| |
| typedef struct _callee_saved_stack _callee_saved_stack_t; |
| |
| #endif /* _ASMLANGUAGE */ |
| |
| /* Bitmask definitions for the struct tcs->flags bit field */ |
| |
| #define K_STATIC 0x00000800 |
| |
| #define K_READY 0x00000000 /* Thread is ready to run */ |
| #define K_TIMING 0x00001000 /* Thread is waiting on a timeout */ |
| #define K_PENDING 0x00002000 /* Thread is waiting on an object */ |
| #define K_PRESTART 0x00004000 /* Thread has not yet started */ |
| #define K_DEAD 0x00008000 /* Thread has terminated */ |
| #define K_SUSPENDED 0x00010000 /* Thread is suspended */ |
| #define K_DUMMY 0x00020000 /* Not a real thread */ |
| #define K_EXECUTION_MASK (K_TIMING | K_PENDING | K_PRESTART | \ |
| K_DEAD | K_SUSPENDED | K_DUMMY) |
| |
| #define K_FP_REGS 0x010 /* 1 = thread uses floating point registers */ |
| #define K_ESSENTIAL 0x200 /* 1 = system thread that must not abort */ |
| #define NO_METRICS 0x400 /* 1 = _Swap() not to update task metrics */ |
| |
| /* stacks */ |
| |
| #define STACK_ALIGN_SIZE 4 |
| |
| #define STACK_ROUND_UP(x) ROUND_UP(x, STACK_ALIGN_SIZE) |
| #define STACK_ROUND_DOWN(x) ROUND_DOWN(x, STACK_ALIGN_SIZE) |
| |
| /* |
| * Reason a thread has relinquished control: fibers can only be in the NONE |
| * or COOP state, tasks can be one in the four. |
| */ |
| #define _CAUSE_NONE 0 |
| #define _CAUSE_COOP 1 |
| #define _CAUSE_RIRQ 2 |
| #define _CAUSE_FIRQ 3 |
| |
| #ifndef _ASMLANGUAGE |
| |
| struct _thread_arch { |
| |
| /* interrupt key when relinquishing control */ |
| uint32_t intlock_key; |
| |
| /* one of the _CAUSE_xxxx definitions above */ |
| int relinquish_cause; |
| |
| /* return value from _Swap */ |
| unsigned int return_value; |
| |
| #ifdef CONFIG_ARC_STACK_CHECKING |
| /* top of stack for hardware stack checking */ |
| uint32_t stack_top; |
| #endif |
| }; |
| |
| typedef struct _thread_arch _thread_arch_t; |
| |
| struct _kernel_arch { |
| |
| char *rirq_sp; /* regular IRQ stack pointer base */ |
| |
| /* |
| * FIRQ stack pointer is installed once in the second bank's SP, so |
| * there is no need to track it in _kernel. |
| */ |
| |
| }; |
| |
| typedef struct _kernel_arch _kernel_arch_t; |
| |
| #endif /* _ASMLANGUAGE */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* _kernel_arch_data__h_ */ |