From: Guo Ren <ren_guo@c-sky.com>
To: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
tglx@linutronix.de, daniel.lezcano@linaro.org,
jason@lakedaemon.net, arnd@arndb.de
Cc: c-sky_gcc_upstream@c-sky.com, gnu-csky@mentor.com,
thomas.petazzoni@bootlin.com, wbx@uclibc-ng.org,
ren_guo@c-sky.com, green.hu@gmail.com
Subject: [PATCH V2 05/19] csky: System Call
Date: Mon, 2 Jul 2018 01:30:08 +0800 [thread overview]
Message-ID: <1005fef6031efbee4b5041ee286c053dd97670e6.1530465326.git.ren_guo@c-sky.com> (raw)
In-Reply-To: <cover.1530465325.git.ren_guo@c-sky.com>
In-Reply-To: <cover.1530465325.git.ren_guo@c-sky.com>
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
---
arch/csky/include/asm/syscall.h | 69 +++++++++++++++++++++++++++++++++++++
arch/csky/include/asm/syscalls.h | 14 ++++++++
arch/csky/include/uapi/asm/unistd.h | 63 +++++++++++++++++++++++++++++++++
arch/csky/kernel/syscall.c | 63 +++++++++++++++++++++++++++++++++
arch/csky/kernel/syscall_table.c | 12 +++++++
5 files changed, 221 insertions(+)
create mode 100644 arch/csky/include/asm/syscall.h
create mode 100644 arch/csky/include/asm/syscalls.h
create mode 100644 arch/csky/include/uapi/asm/unistd.h
create mode 100644 arch/csky/kernel/syscall.c
create mode 100644 arch/csky/kernel/syscall_table.c
diff --git a/arch/csky/include/asm/syscall.h b/arch/csky/include/asm/syscall.h
new file mode 100644
index 0000000..8966739
--- /dev/null
+++ b/arch/csky/include/asm/syscall.h
@@ -0,0 +1,69 @@
+#ifndef __ASM_SYSCALL_H
+#define __ASM_SYSCALL_H
+
+#include <linux/sched.h>
+#include <linux/err.h>
+#include <abi/regdef.h>
+
+static inline int
+syscall_get_nr(struct task_struct *task, struct pt_regs *regs)
+{
+ return regs_syscallid(regs);
+}
+
+static inline void
+syscall_rollback(struct task_struct *task, struct pt_regs *regs)
+{
+ regs->a0 = regs->orig_a0;
+}
+
+static inline long
+syscall_get_error(struct task_struct *task, struct pt_regs *regs)
+{
+ unsigned long error = regs->a0;
+
+ return IS_ERR_VALUE(error) ? error : 0;
+}
+
+static inline long
+syscall_get_return_value(struct task_struct *task, struct pt_regs *regs)
+{
+ return regs->a0;
+}
+
+static inline void
+syscall_set_return_value(struct task_struct *task, struct pt_regs *regs,
+ int error, long val)
+{
+ regs->a0 = (long) error ?: val;
+}
+
+static inline void
+syscall_get_arguments(struct task_struct *task, struct pt_regs *regs,
+ unsigned int i, unsigned int n, unsigned long *args)
+{
+ BUG_ON(i + n > 6);
+ if (i == 0) {
+ args[0] = regs->orig_a0;
+ args++;
+ i++;
+ n--;
+ }
+ memcpy(args, ®s->a1 + i * sizeof(regs->a1), n * sizeof(args[0]));
+}
+
+static inline void
+syscall_set_arguments(struct task_struct *task, struct pt_regs *regs,
+ unsigned int i, unsigned int n, const unsigned long *args)
+{
+ BUG_ON(i + n > 6);
+ if (i == 0) {
+ regs->orig_a0 = args[0];
+ args++;
+ i++;
+ n--;
+ }
+ memcpy(®s->a1 + i * sizeof(regs->a1), args, n * sizeof(regs->a0));
+}
+
+#endif /* __ASM_SYSCALL_H */
diff --git a/arch/csky/include/asm/syscalls.h b/arch/csky/include/asm/syscalls.h
new file mode 100644
index 0000000..c478830
--- /dev/null
+++ b/arch/csky/include/asm/syscalls.h
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
+#ifndef __ASM_CSKY_SYSCALLS_H
+#define __ASM_CSKY_SYSCALLS_H
+
+#include <asm-generic/syscalls.h>
+
+long sys_cacheflush(void __user *, unsigned long, int);
+
+long sys_set_thread_area(unsigned long addr);
+
+long sys_csky_fadvise64_64(int fd, int advice, loff_t offset, loff_t len);
+
+#endif /* __ASM_CSKY_SYSCALLS_H */
diff --git a/arch/csky/include/uapi/asm/unistd.h b/arch/csky/include/uapi/asm/unistd.h
new file mode 100644
index 0000000..0ea9b5a
--- /dev/null
+++ b/arch/csky/include/uapi/asm/unistd.h
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
+#define __ARCH_WANT_OLD_READDIR
+#define __ARCH_WANT_RENAMEAT
+#define __ARCH_WANT_STAT64
+#define __ARCH_WANT_SYS_ALARM
+#define __ARCH_WANT_SYS_CLONE
+#define __ARCH_WANT_SYS_FORK
+#define __ARCH_WANT_SYS_GETHOSTNAME
+#define __ARCH_WANT_SYS_GETPGRP
+#define __ARCH_WANT_SYS_IPC
+#define __ARCH_WANT_SYS_LLSEEK
+#define __ARCH_WANT_SYS_NICE
+#define __ARCH_WANT_SYS_OLD_GETRLIMIT
+#define __ARCH_WANT_SYS_OLDUMOUNT
+#define __ARCH_WANT_SYS_PAUSE
+#define __ARCH_WANT_SYS_SIGNAL
+#define __ARCH_WANT_SYS_SIGPENDING
+#define __ARCH_WANT_SYS_SIGPROCMASK
+#define __ARCH_WANT_SYS_SOCKETCALL
+#define __ARCH_WANT_SYS_TIME
+#define __ARCH_WANT_SYS_UTIME
+#define __ARCH_WANT_SYS_VFORK
+#define __ARCH_WANT_SYS_WAITPID
+
+#include <asm-generic/unistd.h>
+
+/*
+ * other define
+ */
+#define __NR_set_thread_area (__NR_arch_specific_syscall + 0)
+__SYSCALL(__NR_set_thread_area, sys_set_thread_area)
+#define __NR_ipc (__NR_arch_specific_syscall + 1)
+__SYSCALL(__NR_ipc, sys_ipc)
+#define __NR_socketcall (__NR_arch_specific_syscall + 2)
+__SYSCALL(__NR_socketcall, sys_socketcall)
+#define __NR_ugetrlimit (__NR_arch_specific_syscall + 3)
+__SYSCALL(__NR_ugetrlimit, sys_getrlimit)
+#define __NR_cacheflush (__NR_arch_specific_syscall + 4)
+__SYSCALL(__NR_cacheflush, sys_cacheflush)
+#define __NR_sysfs (__NR_arch_specific_syscall + 5)
+__SYSCALL(__NR_sysfs, sys_sysfs)
+
+__SYSCALL(__NR_fadvise64_64, sys_csky_fadvise64_64)
+
+#define __NR_setgroups32 __NR_setgroups
+#define __NR_getgid32 __NR_getgid
+#define __NR_getgroups32 __NR_getgroups
+#define __NR_setuid32 __NR_setuid
+#define __NR_setgid32 __NR_setgid
+#define __NR_getresgid32 __NR_getresgid
+#define __NR_setfsuid32 __NR_setfsuid
+#define __NR_setfsgid32 __NR_setfsgid
+#define __NR_fchown32 __NR_fchown
+#define __NR_geteuid32 __NR_geteuid
+#define __NR_getegid32 __NR_getegid
+#define __NR_getresuid32 __NR_getresuid
+#define __NR_setresuid32 __NR_setresuid
+#define __NR_setresgid32 __NR_setresgid
+#define __NR_setreuid32 __NR_setreuid
+#define __NR_setregid32 __NR_setregid
+#define __NR__llseek __NR_llseek
+
diff --git a/arch/csky/kernel/syscall.c b/arch/csky/kernel/syscall.c
new file mode 100644
index 0000000..f0a1294
--- /dev/null
+++ b/arch/csky/kernel/syscall.c
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
+#include <linux/syscalls.h>
+
+SYSCALL_DEFINE1(set_thread_area, unsigned long, addr)
+{
+ struct thread_info *ti = task_thread_info(current);
+ struct pt_regs *reg = current_pt_regs();
+
+ reg->tls = addr;
+ ti->tp_value = addr;
+
+ return 0;
+}
+
+SYSCALL_DEFINE6(mmap2,
+ unsigned long, addr,
+ unsigned long, len,
+ unsigned long, prot,
+ unsigned long, flags,
+ unsigned long, fd,
+ off_t, offset)
+{
+ if (unlikely(offset & (~PAGE_MASK >> 12)))
+ return -EINVAL;
+ return sys_mmap_pgoff(addr, len, prot, flags, fd,
+ offset >> (PAGE_SHIFT - 12));
+}
+
+struct mmap_arg_struct {
+ unsigned long addr;
+ unsigned long len;
+ unsigned long prot;
+ unsigned long flags;
+ unsigned long fd;
+ unsigned long offset;
+};
+
+SYSCALL_DEFINE1(mmap,
+ struct mmap_arg_struct *, arg)
+{
+ struct mmap_arg_struct a;
+
+ if (copy_from_user(&a, arg, sizeof(a)))
+ return -EINVAL;
+
+ if (unlikely(a.offset & ~PAGE_MASK))
+ return -EINVAL;
+
+ return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT);
+}
+
+/*
+ * for abiv1 the 64bits args should be even th, So we need mov the advice forward.
+ */
+SYSCALL_DEFINE4(csky_fadvise64_64,
+ int, fd,
+ int, advice,
+ loff_t, offset,
+ loff_t, len)
+{
+ return sys_fadvise64_64(fd, offset, len, advice);
+}
diff --git a/arch/csky/kernel/syscall_table.c b/arch/csky/kernel/syscall_table.c
new file mode 100644
index 0000000..bea8558
--- /dev/null
+++ b/arch/csky/kernel/syscall_table.c
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.
+#include <linux/syscalls.h>
+#include <asm/syscalls.h>
+
+#undef __SYSCALL
+#define __SYSCALL(nr, call) [nr] = (call),
+
+void * const sys_call_table[__NR_syscalls] __page_aligned_data = {
+ [0 ... __NR_syscalls - 1] = sys_ni_syscall,
+#include <asm/unistd.h>
+};
--
2.7.4
next prev parent reply other threads:[~2018-07-01 17:32 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-01 17:30 [PATCH V2 00/19] C-SKY(csky) Linux Kernel Port Guo Ren
2018-07-01 17:30 ` [PATCH V2 01/19] csky: Build infrastructure Guo Ren
2018-07-01 21:01 ` Randy Dunlap
2018-07-02 1:13 ` Guo Ren
2018-07-03 3:33 ` Rob Herring
2018-07-03 9:14 ` Guo Ren
2018-07-03 16:03 ` Arnd Bergmann
2018-07-04 11:40 ` Guo Ren
2018-07-01 17:30 ` [PATCH V2 02/19] csky: defconfig Guo Ren
2018-07-03 3:16 ` Rob Herring
2018-07-03 8:31 ` Guo Ren
2018-07-01 17:30 ` [PATCH V2 03/19] csky: Kernel booting Guo Ren
2018-07-01 17:30 ` [PATCH V2 04/19] csky: Exception handling Guo Ren
2018-07-01 17:30 ` Guo Ren [this message]
2018-07-03 19:53 ` [PATCH V2 05/19] csky: System Call Arnd Bergmann
2018-07-04 11:49 ` Guo Ren
2018-07-04 21:04 ` Arnd Bergmann
2018-07-05 5:38 ` Guo Ren
2018-07-01 17:30 ` [PATCH V2 06/19] csky: Cache and TLB routines Guo Ren
2018-07-05 17:40 ` Peter Zijlstra
2018-07-07 11:51 ` Guo Ren
2018-07-01 17:30 ` [PATCH V2 07/19] csky: MMU and page table management Guo Ren
2018-07-02 13:29 ` Christoph Hellwig
2018-07-03 2:53 ` Guo Ren
2018-07-01 17:30 ` [PATCH V2 08/19] csky: Process management and Signal Guo Ren
2018-07-01 17:30 ` [PATCH V2 09/19] csky: VDSO and rt_sigreturn Guo Ren
2018-07-01 17:30 ` [PATCH V2 10/19] csky: IRQ handling Guo Ren
2018-07-01 17:30 ` [PATCH V2 11/19] csky: Atomic operations Guo Ren
2018-07-05 17:50 ` Peter Zijlstra
2018-07-06 11:01 ` Guo Ren
2018-07-06 11:56 ` Peter Zijlstra
2018-07-06 12:17 ` Peter Zijlstra
2018-07-07 8:08 ` Guo Ren
2018-07-07 20:10 ` Andrea Parri
2018-07-08 1:05 ` Guo Ren
2018-07-07 7:42 ` Guo Ren
2018-07-07 19:54 ` Andrea Parri
2018-07-08 0:39 ` Guo Ren
2018-07-05 17:59 ` Peter Zijlstra
2018-07-06 11:44 ` Guo Ren
2018-07-06 12:03 ` Peter Zijlstra
2018-07-06 13:01 ` Peter Zijlstra
2018-07-06 14:06 ` Guo Ren
2018-07-05 18:00 ` Peter Zijlstra
2018-07-06 11:48 ` Guo Ren
2018-07-06 12:05 ` Peter Zijlstra
2018-07-06 13:46 ` Guo Ren
2018-07-01 17:30 ` [PATCH V2 12/19] csky: ELF and module probe Guo Ren
2018-07-01 17:30 ` [PATCH V2 13/19] csky: Library functions Guo Ren
2018-07-03 20:04 ` Arnd Bergmann
2018-07-04 10:51 ` Guo Ren
2018-07-01 17:30 ` [PATCH V2 14/19] csky: User access Guo Ren
2018-07-01 17:30 ` [PATCH V2 15/19] csky: Debug and Ptrace GDB Guo Ren
2018-07-01 17:30 ` [PATCH V2 16/19] csky: SMP support Guo Ren
2018-07-05 18:05 ` Peter Zijlstra
2018-07-06 6:07 ` Guo Ren
2018-07-06 9:39 ` Peter Zijlstra
2018-07-06 13:22 ` Guo Ren
2018-07-06 5:24 ` Mark Rutland
2018-07-06 11:32 ` Guo Ren
2018-07-06 11:43 ` Mark Rutland
2018-07-06 12:26 ` Guo Ren
2018-07-06 16:21 ` Mark Rutland
2018-07-07 6:16 ` Guo Ren
2018-07-01 17:30 ` [PATCH V2 17/19] csky: Misc headers Guo Ren
2018-07-01 17:30 ` [PATCH V2 18/19] clocksource: add C-SKY clocksource drivers Guo Ren
2018-07-01 17:34 ` Guo Ren
2018-07-03 9:39 ` Thomas Gleixner
2018-07-04 10:49 ` Guo Ren
2018-07-04 14:35 ` Thomas Gleixner
2018-07-05 5:03 ` Guo Ren
2018-07-04 17:05 ` Daniel Lezcano
2018-07-05 3:30 ` Guo Ren
2018-07-05 9:23 ` Daniel Lezcano
2018-07-06 5:57 ` Guo Ren
2018-07-01 17:30 ` [PATCH V2 19/19] irqchip: add C-SKY irqchip drivers Guo Ren
2018-07-03 3:27 ` Rob Herring
2018-07-03 7:38 ` Guo Ren
2018-07-03 9:28 ` Thomas Gleixner
2018-07-04 5:08 ` Guo Ren
2018-07-04 6:43 ` Thomas Gleixner
2018-07-04 11:58 ` Guo Ren
2018-07-11 9:51 ` [PATCH V2 00/19] C-SKY(csky) Linux Kernel Port David Howells
2018-07-12 12:51 ` Guo Ren
2018-07-12 16:04 ` Sandra Loosemore
2018-07-13 1:30 ` Guo Ren
2018-07-13 10:23 ` David Howells
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