| /* |
| * Copyright (c) 2013-2016 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 (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 */ |
| |
| /* 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_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_ */ |