| /* |
| * Copyright (c) 2017 Intel Corporation |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| /** |
| * @file |
| * @brief Per-arch thread definition |
| * |
| * This file contains definitions for |
| * |
| * struct _thread_arch |
| * struct _callee_saved |
| * struct _caller_saved |
| * |
| * necessary to instantiate instances of struct k_thread. |
| */ |
| |
| #ifndef _kernel_arch_thread_h_ |
| #define _kernel_arch_thread_h_ |
| |
| #ifndef _ASMLANGUAGE |
| #include <zephyr/types.h> |
| |
| struct _caller_saved { |
| /* |
| * Unused for Cortex-M, which automatically saves the necessary |
| * registers in its exception stack frame. |
| * |
| * For Cortex-A, this may be: |
| * |
| * u32_t a1; // r0 |
| * u32_t a2; // r1 |
| * u32_t a3; // r2 |
| * u32_t a4; // r3 |
| * u32_t ip; // r12 |
| * u32_t lr; // r14 |
| * u32_t pc; // r15 |
| * u32_t xpsr; |
| */ |
| }; |
| |
| typedef struct _caller_saved _caller_saved_t; |
| |
| struct _callee_saved { |
| u32_t v1; /* r4 */ |
| u32_t v2; /* r5 */ |
| u32_t v3; /* r6 */ |
| u32_t v4; /* r7 */ |
| u32_t v5; /* r8 */ |
| u32_t v6; /* r9 */ |
| u32_t v7; /* r10 */ |
| u32_t v8; /* r11 */ |
| u32_t psp; /* r13 */ |
| }; |
| |
| typedef struct _callee_saved _callee_saved_t; |
| |
| #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 */ |
| u32_t basepri; |
| |
| /* r0 in stack frame cannot be written to reliably */ |
| u32_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; |
| |
| #endif /* _ASMLANGUAGE */ |
| |
| #endif /* _kernel_arch_thread__h_ */ |