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-rw-r--r--arch/m32r/Kconfig4
-rw-r--r--arch/m32r/include/asm/Kbuild5
-rw-r--r--arch/m32r/include/asm/elf.h3
-rw-r--r--arch/m32r/include/asm/exec.h14
-rw-r--r--arch/m32r/include/asm/module.h10
-rw-r--r--arch/m32r/include/asm/processor.h5
-rw-r--r--arch/m32r/include/asm/ptrace.h2
-rw-r--r--arch/m32r/include/asm/signal.h4
-rw-r--r--arch/m32r/include/asm/socket.h1
-rw-r--r--arch/m32r/include/asm/thread_info.h9
-rw-r--r--arch/m32r/include/asm/unistd.h4
-rw-r--r--arch/m32r/include/uapi/asm/Kbuild3
-rw-r--r--arch/m32r/kernel/entry.S9
-rw-r--r--arch/m32r/kernel/m32r_ksyms.c1
-rw-r--r--arch/m32r/kernel/module.c15
-rw-r--r--arch/m32r/kernel/process.c129
-rw-r--r--arch/m32r/kernel/signal.c3
-rw-r--r--arch/m32r/kernel/sys_m32r.c21
18 files changed, 52 insertions, 190 deletions
diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig
index 49498bbb961..5183f43a2cf 100644
--- a/arch/m32r/Kconfig
+++ b/arch/m32r/Kconfig
@@ -8,11 +8,15 @@ config M32R
select HAVE_KERNEL_BZIP2
select HAVE_KERNEL_LZMA
select ARCH_WANT_IPC_PARSE_VERSION
+ select HAVE_DEBUG_BUGVERBOSE
select HAVE_GENERIC_HARDIRQS
select GENERIC_IRQ_PROBE
select GENERIC_IRQ_SHOW
select GENERIC_ATOMIC64
select ARCH_USES_GETTIMEOFFSET
+ select MODULES_USE_ELF_RELA
+ select GENERIC_KERNEL_THREAD
+ select GENERIC_KERNEL_EXECVE
config SBUS
bool
diff --git a/arch/m32r/include/asm/Kbuild b/arch/m32r/include/asm/Kbuild
index c68e1680da0..4bc8ae73e08 100644
--- a/arch/m32r/include/asm/Kbuild
+++ b/arch/m32r/include/asm/Kbuild
@@ -1 +1,6 @@
include include/asm-generic/Kbuild.asm
+
+generic-y += clkdev.h
+generic-y += exec.h
+generic-y += module.h
+generic-y += trace_clock.h
diff --git a/arch/m32r/include/asm/elf.h b/arch/m32r/include/asm/elf.h
index b8da7d0574d..70896161c63 100644
--- a/arch/m32r/include/asm/elf.h
+++ b/arch/m32r/include/asm/elf.h
@@ -128,6 +128,7 @@ typedef elf_fpreg_t elf_fpregset_t;
intent than poking at uname or /proc/cpuinfo. */
#define ELF_PLATFORM (NULL)
-#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
+#define SET_PERSONALITY(ex) \
+ set_personality(PER_LINUX | (current->personality & (~PER_MASK)))
#endif /* _ASM_M32R__ELF_H */
diff --git a/arch/m32r/include/asm/exec.h b/arch/m32r/include/asm/exec.h
deleted file mode 100644
index c805dbd75b5..00000000000
--- a/arch/m32r/include/asm/exec.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * 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.
- *
- * Copyright (C) 2001 Hiroyuki Kondo, Hirokazu Takata, and Hitoshi Yamamoto
- * Copyright (C) 2004, 2006 Hirokazu Takata <takata at linux-m32r.org>
- */
-#ifndef _ASM_M32R_EXEC_H
-#define _ASM_M32R_EXEC_H
-
-#define arch_align_stack(x) (x)
-
-#endif /* _ASM_M32R_EXEC_H */
diff --git a/arch/m32r/include/asm/module.h b/arch/m32r/include/asm/module.h
deleted file mode 100644
index eb73ee01121..00000000000
--- a/arch/m32r/include/asm/module.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifndef _ASM_M32R_MODULE_H
-#define _ASM_M32R_MODULE_H
-
-struct mod_arch_specific { };
-
-#define Elf_Shdr Elf32_Shdr
-#define Elf_Sym Elf32_Sym
-#define Elf_Ehdr Elf32_Ehdr
-
-#endif /* _ASM_M32R_MODULE_H */
diff --git a/arch/m32r/include/asm/processor.h b/arch/m32r/include/asm/processor.h
index da17253b573..5767367550c 100644
--- a/arch/m32r/include/asm/processor.h
+++ b/arch/m32r/include/asm/processor.h
@@ -118,11 +118,6 @@ struct mm_struct;
/* Free all resources held by a thread. */
extern void release_thread(struct task_struct *);
-/*
- * create a kernel thread without removing it from tasklists
- */
-extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
-
/* Copy and release all segment info associated with a VM */
extern void copy_segments(struct task_struct *p, struct mm_struct * mm);
extern void release_segments(struct mm_struct * mm);
diff --git a/arch/m32r/include/asm/ptrace.h b/arch/m32r/include/asm/ptrace.h
index 4313aa62b51..c4432f1fb2c 100644
--- a/arch/m32r/include/asm/ptrace.h
+++ b/arch/m32r/include/asm/ptrace.h
@@ -139,6 +139,8 @@ extern void withdraw_debug_trap(struct pt_regs *regs);
#define task_pt_regs(task) \
((struct pt_regs *)(task_stack_page(task) + THREAD_SIZE) - 1)
+#define current_pt_regs() ((struct pt_regs *) \
+ ((unsigned long)current_thread_info() + THREAD_SIZE) - 1)
#endif /* __KERNEL */
diff --git a/arch/m32r/include/asm/signal.h b/arch/m32r/include/asm/signal.h
index ea5f95e4079..e4d2e2ad5f1 100644
--- a/arch/m32r/include/asm/signal.h
+++ b/arch/m32r/include/asm/signal.h
@@ -149,10 +149,6 @@ typedef struct sigaltstack {
#undef __HAVE_ARCH_SIG_BITOPS
-struct pt_regs;
-
-#define ptrace_signal_deliver(regs, cookie) do { } while (0)
-
#endif /* __KERNEL__ */
#endif /* _ASM_M32R_SIGNAL_H */
diff --git a/arch/m32r/include/asm/socket.h b/arch/m32r/include/asm/socket.h
index a15f40b5278..5e7088a2672 100644
--- a/arch/m32r/include/asm/socket.h
+++ b/arch/m32r/include/asm/socket.h
@@ -40,6 +40,7 @@
/* Socket filtering */
#define SO_ATTACH_FILTER 26
#define SO_DETACH_FILTER 27
+#define SO_GET_FILTER SO_ATTACH_FILTER
#define SO_PEERNAME 28
#define SO_TIMESTAMP 29
diff --git a/arch/m32r/include/asm/thread_info.h b/arch/m32r/include/asm/thread_info.h
index c083f6073ef..c074f4c2e85 100644
--- a/arch/m32r/include/asm/thread_info.h
+++ b/arch/m32r/include/asm/thread_info.h
@@ -119,25 +119,20 @@ static inline unsigned int get_thread_fault_code(void)
#define TIF_SIGPENDING 1 /* signal pending */
#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
#define TIF_SINGLESTEP 3 /* restore singlestep on return to user mode */
-#define TIF_IRET 4 /* return with iret */
#define TIF_NOTIFY_RESUME 5 /* callback before returning to user */
#define TIF_RESTORE_SIGMASK 8 /* restore signal mask in do_signal() */
#define TIF_USEDFPU 16 /* FPU was used by this task this quantum (SMP) */
-#define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling TIF_NEED_RESCHED */
#define TIF_MEMDIE 18 /* is terminating due to OOM killer */
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
-#define _TIF_IRET (1<<TIF_IRET)
#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
-#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)
#define _TIF_USEDFPU (1<<TIF_USEDFPU)
-#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
-#define _TIF_WORK_MASK 0x0000FFFE /* work to do on interrupt/exception return */
-#define _TIF_ALLWORK_MASK 0x0000FFFF /* work to do on any return to u-space */
+#define _TIF_WORK_MASK (_TIF_SIGPENDING | _TIF_NEED_RESCHED | _TIF_NOTIFY_RESUME)
+#define _TIF_ALLWORK_MASK (_TIF_WORK_MASK | _TIF_SYSCALL_TRACE)
/*
* Thread-synchronous status.
diff --git a/arch/m32r/include/asm/unistd.h b/arch/m32r/include/asm/unistd.h
index d5e66a48078..d9e7351af2a 100644
--- a/arch/m32r/include/asm/unistd.h
+++ b/arch/m32r/include/asm/unistd.h
@@ -352,6 +352,10 @@
#define __ARCH_WANT_SYS_OLDUMOUNT
#define __ARCH_WANT_SYS_RT_SIGACTION
#define __ARCH_WANT_SYS_RT_SIGSUSPEND
+#define __ARCH_WANT_SYS_EXECVE
+#define __ARCH_WANT_SYS_CLONE
+#define __ARCH_WANT_SYS_FORK
+#define __ARCH_WANT_SYS_VFORK
#define __IGNORE_lchown
#define __IGNORE_setuid
diff --git a/arch/m32r/include/uapi/asm/Kbuild b/arch/m32r/include/uapi/asm/Kbuild
new file mode 100644
index 00000000000..baebb3da1d4
--- /dev/null
+++ b/arch/m32r/include/uapi/asm/Kbuild
@@ -0,0 +1,3 @@
+# UAPI Header export list
+include include/uapi/asm-generic/Kbuild.asm
+
diff --git a/arch/m32r/kernel/entry.S b/arch/m32r/kernel/entry.S
index 225412bc227..0c01543f10c 100644
--- a/arch/m32r/kernel/entry.S
+++ b/arch/m32r/kernel/entry.S
@@ -125,6 +125,15 @@
and \reg, sp
.endm
+ENTRY(ret_from_kernel_thread)
+ pop r0
+ bl schedule_tail
+ GET_THREAD_INFO(r8)
+ ld r0, R0(r8)
+ ld r1, R1(r8)
+ jl r1
+ bra syscall_exit
+
ENTRY(ret_from_fork)
pop r0
bl schedule_tail
diff --git a/arch/m32r/kernel/m32r_ksyms.c b/arch/m32r/kernel/m32r_ksyms.c
index 700570747a9..b727e693c80 100644
--- a/arch/m32r/kernel/m32r_ksyms.c
+++ b/arch/m32r/kernel/m32r_ksyms.c
@@ -21,7 +21,6 @@ EXPORT_SYMBOL(boot_cpu_data);
EXPORT_SYMBOL(dump_fpu);
EXPORT_SYMBOL(__ioremap);
EXPORT_SYMBOL(iounmap);
-EXPORT_SYMBOL(kernel_thread);
EXPORT_SYMBOL(strncpy_from_user);
EXPORT_SYMBOL(__strncpy_from_user);
diff --git a/arch/m32r/kernel/module.c b/arch/m32r/kernel/module.c
index 3071fe83ffc..38233b6596b 100644
--- a/arch/m32r/kernel/module.c
+++ b/arch/m32r/kernel/module.c
@@ -201,18 +201,3 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
}
return 0;
}
-
-int apply_relocate(Elf32_Shdr *sechdrs,
- const char *strtab,
- unsigned int symindex,
- unsigned int relsec,
- struct module *me)
-{
-#if 0
- printk(KERN_ERR "module %s: REL RELOCATION unsupported\n",
- me->name);
- return -ENOEXEC;
-#endif
- return 0;
-
-}
diff --git a/arch/m32r/kernel/process.c b/arch/m32r/kernel/process.c
index 3a4a32b2720..765d0f57c78 100644
--- a/arch/m32r/kernel/process.c
+++ b/arch/m32r/kernel/process.c
@@ -26,6 +26,7 @@
#include <linux/ptrace.h>
#include <linux/unistd.h>
#include <linux/hardirq.h>
+#include <linux/rcupdate.h>
#include <asm/io.h>
#include <asm/uaccess.h>
@@ -82,6 +83,7 @@ void cpu_idle (void)
{
/* endless idle loop with no priority at all */
while (1) {
+ rcu_idle_enter();
while (!need_resched()) {
void (*idle)(void) = pm_idle;
@@ -90,6 +92,7 @@ void cpu_idle (void)
idle();
}
+ rcu_idle_exit();
schedule_preempt_disabled();
}
}
@@ -162,41 +165,6 @@ void show_regs(struct pt_regs * regs)
}
/*
- * Create a kernel thread
- */
-
-/*
- * This is the mechanism for creating a new kernel thread.
- *
- * NOTE! Only a kernel-only process(ie the swapper or direct descendants
- * who haven't done an "execve()") should use this: it will work within
- * a system call from a "real" process, but the process memory space will
- * not be free'd until both the parent and the child have exited.
- */
-static void kernel_thread_helper(void *nouse, int (*fn)(void *), void *arg)
-{
- fn(arg);
- do_exit(-1);
-}
-
-int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
-{
- struct pt_regs regs;
-
- memset(&regs, 0, sizeof (regs));
- regs.r1 = (unsigned long)fn;
- regs.r2 = (unsigned long)arg;
-
- regs.bpc = (unsigned long)kernel_thread_helper;
-
- regs.psw = M32R_PSW_BIE;
-
- /* Ok, create the new process. */
- return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL,
- NULL);
-}
-
-/*
* Free current thread data structures etc..
*/
void exit_thread(void)
@@ -224,88 +192,31 @@ int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
}
int copy_thread(unsigned long clone_flags, unsigned long spu,
- unsigned long unused, struct task_struct *tsk, struct pt_regs *regs)
+ unsigned long arg, struct task_struct *tsk)
{
struct pt_regs *childregs = task_pt_regs(tsk);
extern void ret_from_fork(void);
-
- /* Copy registers */
- *childregs = *regs;
-
- childregs->spu = spu;
- childregs->r0 = 0; /* Child gets zero as return value */
- regs->r0 = tsk->pid;
+ extern void ret_from_kernel_thread(void);
+
+ if (unlikely(tsk->flags & PF_KTHREAD)) {
+ memset(childregs, 0, sizeof(struct pt_regs));
+ childregs->psw = M32R_PSW_BIE;
+ childregs->r1 = spu; /* fn */
+ childregs->r0 = arg;
+ tsk->thread.lr = (unsigned long)ret_from_kernel_thread;
+ } else {
+ /* Copy registers */
+ *childregs = *current_pt_regs();
+ if (spu)
+ childregs->spu = spu;
+ childregs->r0 = 0; /* Child gets zero as return value */
+ tsk->thread.lr = (unsigned long)ret_from_fork;
+ }
tsk->thread.sp = (unsigned long)childregs;
- tsk->thread.lr = (unsigned long)ret_from_fork;
return 0;
}
-asmlinkage int sys_fork(unsigned long r0, unsigned long r1, unsigned long r2,
- unsigned long r3, unsigned long r4, unsigned long r5, unsigned long r6,
- struct pt_regs regs)
-{
-#ifdef CONFIG_MMU
- return do_fork(SIGCHLD, regs.spu, &regs, 0, NULL, NULL);
-#else
- return -EINVAL;
-#endif /* CONFIG_MMU */
-}
-
-asmlinkage int sys_clone(unsigned long clone_flags, unsigned long newsp,
- unsigned long parent_tidptr,
- unsigned long child_tidptr,
- unsigned long r4, unsigned long r5, unsigned long r6,
- struct pt_regs regs)
-{
- if (!newsp)
- newsp = regs.spu;
-
- return do_fork(clone_flags, newsp, &regs, 0,
- (int __user *)parent_tidptr, (int __user *)child_tidptr);
-}
-
-/*
- * This is trivial, and on the face of it looks like it
- * could equally well be done in user mode.
- *
- * Not so, for quite unobvious reasons - register pressure.
- * In user mode vfork() cannot have a stack frame, and if
- * done by calling the "clone()" system call directly, you
- * do not have enough call-clobbered registers to hold all
- * the information you need.
- */
-asmlinkage int sys_vfork(unsigned long r0, unsigned long r1, unsigned long r2,
- unsigned long r3, unsigned long r4, unsigned long r5, unsigned long r6,
- struct pt_regs regs)
-{
- return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs.spu, &regs, 0,
- NULL, NULL);
-}
-
-/*
- * sys_execve() executes a new program.
- */
-asmlinkage int sys_execve(const char __user *ufilename,
- const char __user *const __user *uargv,
- const char __user *const __user *uenvp,
- unsigned long r3, unsigned long r4, unsigned long r5,
- unsigned long r6, struct pt_regs regs)
-{
- int error;
- char *filename;
-
- filename = getname(ufilename);
- error = PTR_ERR(filename);
- if (IS_ERR(filename))
- goto out;
-
- error = do_execve(filename, uargv, uenvp, &regs);
- putname(filename);
-out:
- return error;
-}
-
/*
* These bracket the sleeping functions..
*/
diff --git a/arch/m32r/kernel/signal.c b/arch/m32r/kernel/signal.c
index d0f60b97bbc..6e3c26a1607 100644
--- a/arch/m32r/kernel/signal.c
+++ b/arch/m32r/kernel/signal.c
@@ -20,7 +20,6 @@
#include <linux/unistd.h>
#include <linux/stddef.h>
#include <linux/personality.h>
-#include <linux/freezer.h>
#include <linux/tracehook.h>
#include <asm/cacheflush.h>
#include <asm/ucontext.h>
@@ -366,6 +365,4 @@ void do_notify_resume(struct pt_regs *regs, __u32 thread_info_flags)
clear_thread_flag(TIF_NOTIFY_RESUME);
tracehook_notify_resume(regs);
}
-
- clear_thread_flag(TIF_IRET);
}
diff --git a/arch/m32r/kernel/sys_m32r.c b/arch/m32r/kernel/sys_m32r.c
index d841fb6cc70..c3fdd632fba 100644
--- a/arch/m32r/kernel/sys_m32r.c
+++ b/arch/m32r/kernel/sys_m32r.c
@@ -88,24 +88,3 @@ asmlinkage int sys_cachectl(char *addr, int nbytes, int op)
/* Not implemented yet. */
return -ENOSYS;
}
-
-/*
- * Do a system call from kernel instead of calling sys_execve so we
- * end up with proper pt_regs.
- */
-int kernel_execve(const char *filename,
- const char *const argv[],
- const char *const envp[])
-{
- register long __scno __asm__ ("r7") = __NR_execve;
- register long __arg3 __asm__ ("r2") = (long)(envp);
- register long __arg2 __asm__ ("r1") = (long)(argv);
- register long __res __asm__ ("r0") = (long)(filename);
- __asm__ __volatile__ (
- "trap #" SYSCALL_VECTOR "|| nop"
- : "=r" (__res)
- : "r" (__scno), "0" (__res), "r" (__arg2),
- "r" (__arg3)
- : "memory");
- return __res;
-}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-02-28 10:02:23 +0000