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-rw-r--r--arch/sh/kernel/process_32.c95
1 files changed, 30 insertions, 65 deletions
diff --git a/arch/sh/kernel/process_32.c b/arch/sh/kernel/process_32.c
index 2c7bdf8cb934..62f753a85b89 100644
--- a/arch/sh/kernel/process_32.c
+++ b/arch/sh/kernel/process_32.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* arch/sh/kernel/process.c
*
@@ -8,10 +9,6 @@
* SuperH version: Copyright (C) 1999, 2000 Niibe Yutaka & Kaz Kojima
* Copyright (C) 2006 Lineo Solutions Inc. support SH4A UBC
* Copyright (C) 2002 - 2008 Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
*/
#include <linux/module.h>
#include <linux/mm.h>
@@ -20,7 +17,6 @@
#include <linux/sched/task_stack.h>
#include <linux/slab.h>
#include <linux/elfcore.h>
-#include <linux/kallsyms.h>
#include <linux/fs.h>
#include <linux/ftrace.h>
#include <linux/hw_breakpoint.h>
@@ -34,36 +30,32 @@
void show_regs(struct pt_regs * regs)
{
- printk("\n");
+ pr_info("\n");
show_regs_print_info(KERN_DEFAULT);
- print_symbol("PC is at %s\n", instruction_pointer(regs));
- print_symbol("PR is at %s\n", regs->pr);
+ pr_info("PC is at %pS\n", (void *)instruction_pointer(regs));
+ pr_info("PR is at %pS\n", (void *)regs->pr);
- printk("PC : %08lx SP : %08lx SR : %08lx ",
- regs->pc, regs->regs[15], regs->sr);
+ pr_info("PC : %08lx SP : %08lx SR : %08lx ", regs->pc,
+ regs->regs[15], regs->sr);
#ifdef CONFIG_MMU
- printk("TEA : %08x\n", __raw_readl(MMU_TEA));
+ pr_cont("TEA : %08x\n", __raw_readl(MMU_TEA));
#else
- printk("\n");
+ pr_cont("\n");
#endif
- printk("R0 : %08lx R1 : %08lx R2 : %08lx R3 : %08lx\n",
- regs->regs[0],regs->regs[1],
- regs->regs[2],regs->regs[3]);
- printk("R4 : %08lx R5 : %08lx R6 : %08lx R7 : %08lx\n",
- regs->regs[4],regs->regs[5],
- regs->regs[6],regs->regs[7]);
- printk("R8 : %08lx R9 : %08lx R10 : %08lx R11 : %08lx\n",
- regs->regs[8],regs->regs[9],
- regs->regs[10],regs->regs[11]);
- printk("R12 : %08lx R13 : %08lx R14 : %08lx\n",
- regs->regs[12],regs->regs[13],
- regs->regs[14]);
- printk("MACH: %08lx MACL: %08lx GBR : %08lx PR : %08lx\n",
- regs->mach, regs->macl, regs->gbr, regs->pr);
-
- show_trace(NULL, (unsigned long *)regs->regs[15], regs);
+ pr_info("R0 : %08lx R1 : %08lx R2 : %08lx R3 : %08lx\n",
+ regs->regs[0], regs->regs[1], regs->regs[2], regs->regs[3]);
+ pr_info("R4 : %08lx R5 : %08lx R6 : %08lx R7 : %08lx\n",
+ regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]);
+ pr_info("R8 : %08lx R9 : %08lx R10 : %08lx R11 : %08lx\n",
+ regs->regs[8], regs->regs[9], regs->regs[10], regs->regs[11]);
+ pr_info("R12 : %08lx R13 : %08lx R14 : %08lx\n",
+ regs->regs[12], regs->regs[13], regs->regs[14]);
+ pr_info("MACH: %08lx MACL: %08lx GBR : %08lx PR : %08lx\n",
+ regs->mach, regs->macl, regs->gbr, regs->pr);
+
+ show_trace(NULL, (unsigned long *)regs->regs[15], regs, KERN_DEFAULT);
show_code(regs);
}
@@ -92,36 +84,14 @@ void flush_thread(void)
#endif
}
-void release_thread(struct task_struct *dead_task)
-{
- /* do nothing */
-}
-
-/* Fill in the fpu structure for a core dump.. */
-int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
-{
- int fpvalid = 0;
-
-#if defined(CONFIG_SH_FPU)
- struct task_struct *tsk = current;
-
- fpvalid = !!tsk_used_math(tsk);
- if (fpvalid)
- fpvalid = !fpregs_get(tsk, NULL, 0,
- sizeof(struct user_fpu_struct),
- fpu, NULL);
-#endif
-
- return fpvalid;
-}
-EXPORT_SYMBOL(dump_fpu);
-
asmlinkage void ret_from_fork(void);
asmlinkage void ret_from_kernel_thread(void);
-int copy_thread(unsigned long clone_flags, unsigned long usp,
- unsigned long arg, struct task_struct *p)
+int copy_thread(struct task_struct *p, const struct kernel_clone_args *args)
{
+ u64 clone_flags = args->flags;
+ unsigned long usp = args->stack;
+ unsigned long tls = args->tls;
struct thread_info *ti = task_thread_info(p);
struct pt_regs *childregs;
@@ -141,16 +111,15 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
childregs = task_pt_regs(p);
p->thread.sp = (unsigned long) childregs;
- if (unlikely(p->flags & PF_KTHREAD)) {
+ if (unlikely(args->fn)) {
memset(childregs, 0, sizeof(struct pt_regs));
p->thread.pc = (unsigned long) ret_from_kernel_thread;
- childregs->regs[4] = arg;
- childregs->regs[5] = usp;
+ childregs->regs[4] = (unsigned long) args->fn_arg;
+ childregs->regs[5] = (unsigned long) args->fn;
childregs->sr = SR_MD;
#if defined(CONFIG_SH_FPU)
childregs->sr |= SR_FD;
#endif
- ti->addr_limit = KERNEL_DS;
ti->status &= ~TS_USEDFPU;
p->thread.fpu_counter = 0;
return 0;
@@ -159,10 +128,9 @@ int copy_thread(unsigned long clone_flags, unsigned long usp,
if (usp)
childregs->regs[15] = usp;
- ti->addr_limit = USER_DS;
if (clone_flags & CLONE_SETTLS)
- childregs->gbr = childregs->regs[0];
+ childregs->gbr = tls;
childregs->regs[0] = 0; /* Set return value for child */
p->thread.pc = (unsigned long) ret_from_fork;
@@ -178,7 +146,7 @@ __switch_to(struct task_struct *prev, struct task_struct *next)
{
struct thread_struct *next_t = &next->thread;
-#if defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_SMP)
+#if defined(CONFIG_STACKPROTECTOR) && !defined(CONFIG_SMP)
__stack_chk_guard = next->stack_canary;
#endif
@@ -209,13 +177,10 @@ __switch_to(struct task_struct *prev, struct task_struct *next)
return prev;
}
-unsigned long get_wchan(struct task_struct *p)
+unsigned long __get_wchan(struct task_struct *p)
{
unsigned long pc;
- if (!p || p == current || p->state == TASK_RUNNING)
- return 0;
-
/*
* The same comment as on the Alpha applies here, too ...
*/
generated by cgit (git 2.34.1) at 2025-12-25 01:52:13 +0000