projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| a15e9ffa GH |
1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | // Copyright (C) 2005-2017 Andes Technology Corporation | |
| 3 | ||
| 4 | #ifndef __ASM_NDS32_PROCESSOR_H | |
| 5 | #define __ASM_NDS32_PROCESSOR_H | |
| 6 | ||
| a15e9ffa GH |
7 | #ifdef __KERNEL__ |
| 8 | ||
| 9 | #include <asm/ptrace.h> | |
| 10 | #include <asm/types.h> | |
| 11 | #include <asm/sigcontext.h> | |
| 12 | ||
| 13 | #define KERNEL_STACK_SIZE PAGE_SIZE | |
| 14 | #define STACK_TOP TASK_SIZE | |
| 15 | #define STACK_TOP_MAX TASK_SIZE | |
| 16 | ||
| 17 | struct cpu_context { | |
| 18 | unsigned long r6; | |
| 19 | unsigned long r7; | |
| 20 | unsigned long r8; | |
| 21 | unsigned long r9; | |
| 22 | unsigned long r10; | |
| 23 | unsigned long r11; | |
| 24 | unsigned long r12; | |
| 25 | unsigned long r13; | |
| 26 | unsigned long r14; | |
| 27 | unsigned long fp; | |
| 28 | unsigned long pc; | |
| 29 | unsigned long sp; | |
| 30 | }; | |
| 31 | ||
| 32 | struct thread_struct { | |
| 33 | struct cpu_context cpu_context; /* cpu context */ | |
| 34 | /* fault info */ | |
| 35 | unsigned long address; | |
| 36 | unsigned long trap_no; | |
| 37 | unsigned long error_code; | |
| e46bf83c VC |
38 | |
| 39 | struct fpu_struct fpu; | |
| a15e9ffa GH |
40 | }; |
| 41 | ||
| 42 | #define INIT_THREAD { } | |
| 43 | ||
| 44 | #ifdef __NDS32_EB__ | |
| 45 | #define PSW_DE PSW_mskBE | |
| 46 | #else | |
| 47 | #define PSW_DE 0x0 | |
| 48 | #endif | |
| 49 | ||
| 50 | #ifdef CONFIG_WBNA | |
| 51 | #define PSW_valWBNA PSW_mskWBNA | |
| 52 | #else | |
| 53 | #define PSW_valWBNA 0x0 | |
| 54 | #endif | |
| 55 | ||
| 56 | #ifdef CONFIG_HWZOL | |
| 57 | #define PSW_valINIT (PSW_CPL_ANY | PSW_mskAEN | PSW_valWBNA | PSW_mskDT | PSW_mskIT | PSW_DE | PSW_mskGIE) | |
| 58 | #else | |
| 59 | #define PSW_valINIT (PSW_CPL_ANY | PSW_valWBNA | PSW_mskDT | PSW_mskIT | PSW_DE | PSW_mskGIE) | |
| 60 | #endif | |
| 61 | ||
| 62 | #define start_thread(regs,pc,stack) \ | |
| 63 | ({ \ | |
| 64 | memzero(regs, sizeof(struct pt_regs)); \ | |
| 65 | forget_syscall(regs); \ | |
| 66 | regs->ipsw = PSW_valINIT; \ | |
| 67 | regs->ir0 = (PSW_CPL_ANY | PSW_valWBNA | PSW_mskDT | PSW_mskIT | PSW_DE | PSW_SYSTEM | PSW_INTL_1); \ | |
| 68 | regs->ipc = pc; \ | |
| 69 | regs->sp = stack; \ | |
| 70 | }) | |
| 71 | ||
| 72 | /* Forward declaration, a strange C thing */ | |
| 73 | struct task_struct; | |
| 74 | ||
| 75 | /* Free all resources held by a thread. */ | |
| 76 | #define release_thread(thread) do { } while(0) | |
| e46bf83c VC |
77 | #if IS_ENABLED(CONFIG_FPU) |
| 78 | #if !IS_ENABLED(CONFIG_UNLAZU_FPU) | |
| 79 | extern struct task_struct *last_task_used_math; | |
| 80 | #endif | |
| 81 | #endif | |
| a15e9ffa GH |
82 | |
| 83 | /* Prepare to copy thread state - unlazy all lazy status */ | |
| 84 | #define prepare_to_copy(tsk) do { } while (0) | |
| 85 | ||
| 86 | unsigned long get_wchan(struct task_struct *p); | |
| 87 | ||
| 88 | #define cpu_relax() barrier() | |
| 89 | ||
| 90 | #define task_pt_regs(task) \ | |
| 91 | ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \ | |
| 92 | - 8) - 1) | |
| 93 | ||
| 94 | /* | |
| 95 | * Create a new kernel thread | |
| 96 | */ | |
| 97 | extern int kernel_thread(int (*fn) (void *), void *arg, unsigned long flags); | |
| 98 | ||
| 99 | #define KSTK_EIP(tsk) instruction_pointer(task_pt_regs(tsk)) | |
| 100 | #define KSTK_ESP(tsk) user_stack_pointer(task_pt_regs(tsk)) | |
| 101 | ||
| 102 | #endif | |
| 103 | ||
| 104 | #endif /* __ASM_NDS32_PROCESSOR_H */ |