From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- arch/nds32/include/asm/processor.h | 104 +++++++++++++++++++++++++++++++++++++ 1 file changed, 104 insertions(+) create mode 100644 arch/nds32/include/asm/processor.h (limited to 'arch/nds32/include/asm/processor.h') diff --git a/arch/nds32/include/asm/processor.h b/arch/nds32/include/asm/processor.h new file mode 100644 index 000000000..b82369c76 --- /dev/null +++ b/arch/nds32/include/asm/processor.h @@ -0,0 +1,104 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +// Copyright (C) 2005-2017 Andes Technology Corporation + +#ifndef __ASM_NDS32_PROCESSOR_H +#define __ASM_NDS32_PROCESSOR_H + +#ifdef __KERNEL__ + +#include +#include +#include + +#define KERNEL_STACK_SIZE PAGE_SIZE +#define STACK_TOP TASK_SIZE +#define STACK_TOP_MAX TASK_SIZE + +struct cpu_context { + unsigned long r6; + unsigned long r7; + unsigned long r8; + unsigned long r9; + unsigned long r10; + unsigned long r11; + unsigned long r12; + unsigned long r13; + unsigned long r14; + unsigned long fp; + unsigned long pc; + unsigned long sp; +}; + +struct thread_struct { + struct cpu_context cpu_context; /* cpu context */ + /* fault info */ + unsigned long address; + unsigned long trap_no; + unsigned long error_code; + + struct fpu_struct fpu; +}; + +#define INIT_THREAD { } + +#ifdef __NDS32_EB__ +#define PSW_DE PSW_mskBE +#else +#define PSW_DE 0x0 +#endif + +#ifdef CONFIG_WBNA +#define PSW_valWBNA PSW_mskWBNA +#else +#define PSW_valWBNA 0x0 +#endif + +#ifdef CONFIG_HWZOL +#define PSW_valINIT (PSW_CPL_ANY | PSW_mskAEN | PSW_valWBNA | PSW_mskDT | PSW_mskIT | PSW_DE | PSW_mskGIE) +#else +#define PSW_valINIT (PSW_CPL_ANY | PSW_valWBNA | PSW_mskDT | PSW_mskIT | PSW_DE | PSW_mskGIE) +#endif + +#define start_thread(regs,pc,stack) \ +({ \ + memzero(regs, sizeof(struct pt_regs)); \ + forget_syscall(regs); \ + regs->ipsw = PSW_valINIT; \ + regs->ir0 = (PSW_CPL_ANY | PSW_valWBNA | PSW_mskDT | PSW_mskIT | PSW_DE | PSW_SYSTEM | PSW_INTL_1); \ + regs->ipc = pc; \ + regs->sp = stack; \ +}) + +/* Forward declaration, a strange C thing */ +struct task_struct; + +/* Free all resources held by a thread. */ +#define release_thread(thread) do { } while(0) +#if IS_ENABLED(CONFIG_FPU) +#if !IS_ENABLED(CONFIG_UNLAZU_FPU) +extern struct task_struct *last_task_used_math; +#endif +#endif + +/* Prepare to copy thread state - unlazy all lazy status */ +#define prepare_to_copy(tsk) do { } while (0) + +unsigned long get_wchan(struct task_struct *p); + +#define cpu_relax() barrier() + +#define task_pt_regs(task) \ + ((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \ + - 8) - 1) + +/* + * Create a new kernel thread + */ +extern int kernel_thread(int (*fn) (void *), void *arg, unsigned long flags); + +#define KSTK_EIP(tsk) instruction_pointer(task_pt_regs(tsk)) +#define KSTK_ESP(tsk) user_stack_pointer(task_pt_regs(tsk)) + +#endif + +#endif /* __ASM_NDS32_PROCESSOR_H */ -- cgit v1.2.3