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authorPaul Mundt <lethal@linux-sh.org>2007-11-20 01:50:59 -0500
committerPaul Mundt <lethal@linux-sh.org>2008-01-27 23:18:49 -0500
commitbcb28e42be8c1cce6cc523c1b656980011464016 (patch)
tree3c951c59a88eac348a34fb2b714dd255166a2a47 /arch/sh/kernel
parente7e0a4b54a7f225f770d313f9e042f83ece57a35 (diff)
sh: sys_sh consolidation for arch_get_unmapped_area().
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel')
-rw-r--r--arch/sh/kernel/Makefile_322
-rw-r--r--arch/sh/kernel/Makefile_642
-rw-r--r--arch/sh/kernel/sys_sh.c100
-rw-r--r--arch/sh/kernel/sys_sh32.c84
-rw-r--r--arch/sh/kernel/sys_sh64.c246
5 files changed, 108 insertions, 326 deletions
diff --git a/arch/sh/kernel/Makefile_32 b/arch/sh/kernel/Makefile_32
index 17216f5e7c93..34e8fa0d40cc 100644
--- a/arch/sh/kernel/Makefile_32
+++ b/arch/sh/kernel/Makefile_32
@@ -5,7 +5,7 @@
5extra-y := head_32.o init_task.o vmlinux.lds 5extra-y := head_32.o init_task.o vmlinux.lds
6 6
7obj-y := debugtraps.o io.o io_generic.o irq.o machvec.o process_32.o \ 7obj-y := debugtraps.o io.o io_generic.o irq.o machvec.o process_32.o \
8 ptrace_32.o semaphore.o setup.o signal_32.o sys_sh.o \ 8 ptrace_32.o semaphore.o setup.o signal_32.o sys_sh.o sys_sh32.o \
9 syscalls_32.o time.o topology.o traps_32.o 9 syscalls_32.o time.o topology.o traps_32.o
10 10
11obj-y += cpu/ timers/ 11obj-y += cpu/ timers/
diff --git a/arch/sh/kernel/Makefile_64 b/arch/sh/kernel/Makefile_64
index 1211e864ef12..aeac4006df7b 100644
--- a/arch/sh/kernel/Makefile_64
+++ b/arch/sh/kernel/Makefile_64
@@ -1,7 +1,7 @@
1extra-y := head_64.o init_task.o vmlinux.lds 1extra-y := head_64.o init_task.o vmlinux.lds
2 2
3obj-y := debugtraps.o io.o io_generic.o irq.o machvec.o process_64.o \ 3obj-y := debugtraps.o io.o io_generic.o irq.o machvec.o process_64.o \
4 ptrace_64.o semaphore.o setup.o signal_64.o sys_sh64.o \ 4 ptrace_64.o semaphore.o setup.o signal_64.o sys_sh.o sys_sh64.o \
5 syscalls_64.o time.o topology.o traps_64.o 5 syscalls_64.o time.o topology.o traps_64.o
6 6
7obj-y += cpu/ timers/ 7obj-y += cpu/ timers/
diff --git a/arch/sh/kernel/sys_sh.c b/arch/sh/kernel/sys_sh.c
index d545a686a201..59cd2859ce9b 100644
--- a/arch/sh/kernel/sys_sh.c
+++ b/arch/sh/kernel/sys_sh.c
@@ -7,7 +7,6 @@
7 * 7 *
8 * Taken from i386 version. 8 * Taken from i386 version.
9 */ 9 */
10
11#include <linux/errno.h> 10#include <linux/errno.h>
12#include <linux/sched.h> 11#include <linux/sched.h>
13#include <linux/mm.h> 12#include <linux/mm.h>
@@ -27,28 +26,7 @@
27#include <asm/uaccess.h> 26#include <asm/uaccess.h>
28#include <asm/unistd.h> 27#include <asm/unistd.h>
29 28
30/*
31 * sys_pipe() is the normal C calling standard for creating
32 * a pipe. It's not the way Unix traditionally does this, though.
33 */
34asmlinkage int sys_pipe(unsigned long r4, unsigned long r5,
35 unsigned long r6, unsigned long r7,
36 struct pt_regs __regs)
37{
38 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
39 int fd[2];
40 int error;
41
42 error = do_pipe(fd);
43 if (!error) {
44 regs->regs[1] = fd[1];
45 return fd[0];
46 }
47 return error;
48}
49
50unsigned long shm_align_mask = PAGE_SIZE - 1; /* Sane caches */ 29unsigned long shm_align_mask = PAGE_SIZE - 1; /* Sane caches */
51
52EXPORT_SYMBOL(shm_align_mask); 30EXPORT_SYMBOL(shm_align_mask);
53 31
54#ifdef CONFIG_MMU 32#ifdef CONFIG_MMU
@@ -140,7 +118,7 @@ full_search:
140#endif /* CONFIG_MMU */ 118#endif /* CONFIG_MMU */
141 119
142static inline long 120static inline long
143do_mmap2(unsigned long addr, unsigned long len, unsigned long prot, 121do_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
144 unsigned long flags, int fd, unsigned long pgoff) 122 unsigned long flags, int fd, unsigned long pgoff)
145{ 123{
146 int error = -EBADF; 124 int error = -EBADF;
@@ -195,12 +173,13 @@ asmlinkage int sys_ipc(uint call, int first, int second,
195 if (call <= SEMCTL) 173 if (call <= SEMCTL)
196 switch (call) { 174 switch (call) {
197 case SEMOP: 175 case SEMOP:
198 return sys_semtimedop(first, (struct sembuf __user *)ptr, 176 return sys_semtimedop(first,
177 (struct sembuf __user *)ptr,
199 second, NULL); 178 second, NULL);
200 case SEMTIMEDOP: 179 case SEMTIMEDOP:
201 return sys_semtimedop(first, (struct sembuf __user *)ptr, 180 return sys_semtimedop(first,
202 second, 181 (struct sembuf __user *)ptr, second,
203 (const struct timespec __user *)fifth); 182 (const struct timespec __user *)fifth);
204 case SEMGET: 183 case SEMGET:
205 return sys_semget (first, second, third); 184 return sys_semget (first, second, third);
206 case SEMCTL: { 185 case SEMCTL: {
@@ -215,25 +194,28 @@ asmlinkage int sys_ipc(uint call, int first, int second,
215 return -EINVAL; 194 return -EINVAL;
216 } 195 }
217 196
218 if (call <= MSGCTL) 197 if (call <= MSGCTL)
219 switch (call) { 198 switch (call) {
220 case MSGSND: 199 case MSGSND:
221 return sys_msgsnd (first, (struct msgbuf __user *) ptr, 200 return sys_msgsnd (first, (struct msgbuf __user *) ptr,
222 second, third); 201 second, third);
223 case MSGRCV: 202 case MSGRCV:
224 switch (version) { 203 switch (version) {
225 case 0: { 204 case 0:
205 {
226 struct ipc_kludge tmp; 206 struct ipc_kludge tmp;
207
227 if (!ptr) 208 if (!ptr)
228 return -EINVAL; 209 return -EINVAL;
229 210
230 if (copy_from_user(&tmp, 211 if (copy_from_user(&tmp,
231 (struct ipc_kludge __user *) ptr, 212 (struct ipc_kludge __user *) ptr,
232 sizeof (tmp))) 213 sizeof (tmp)))
233 return -EFAULT; 214 return -EFAULT;
215
234 return sys_msgrcv (first, tmp.msgp, second, 216 return sys_msgrcv (first, tmp.msgp, second,
235 tmp.msgtyp, third); 217 tmp.msgtyp, third);
236 } 218 }
237 default: 219 default:
238 return sys_msgrcv (first, 220 return sys_msgrcv (first,
239 (struct msgbuf __user *) ptr, 221 (struct msgbuf __user *) ptr,
@@ -247,7 +229,7 @@ asmlinkage int sys_ipc(uint call, int first, int second,
247 default: 229 default:
248 return -EINVAL; 230 return -EINVAL;
249 } 231 }
250 if (call <= SHMCTL) 232 if (call <= SHMCTL)
251 switch (call) { 233 switch (call) {
252 case SHMAT: 234 case SHMAT:
253 switch (version) { 235 switch (version) {
@@ -265,7 +247,7 @@ asmlinkage int sys_ipc(uint call, int first, int second,
265 return do_shmat (first, (char __user *) ptr, 247 return do_shmat (first, (char __user *) ptr,
266 second, (ulong *) third); 248 second, (ulong *) third);
267 } 249 }
268 case SHMDT: 250 case SHMDT:
269 return sys_shmdt ((char __user *)ptr); 251 return sys_shmdt ((char __user *)ptr);
270 case SHMGET: 252 case SHMGET:
271 return sys_shmget (first, second, third); 253 return sys_shmget (first, second, third);
@@ -275,7 +257,7 @@ asmlinkage int sys_ipc(uint call, int first, int second,
275 default: 257 default:
276 return -EINVAL; 258 return -EINVAL;
277 } 259 }
278 260
279 return -EINVAL; 261 return -EINVAL;
280} 262}
281 263
@@ -289,49 +271,3 @@ asmlinkage int sys_uname(struct old_utsname * name)
289 up_read(&uts_sem); 271 up_read(&uts_sem);
290 return err?-EFAULT:0; 272 return err?-EFAULT:0;
291} 273}
292
293asmlinkage ssize_t sys_pread_wrapper(unsigned int fd, char * buf,
294 size_t count, long dummy, loff_t pos)
295{
296 return sys_pread64(fd, buf, count, pos);
297}
298
299asmlinkage ssize_t sys_pwrite_wrapper(unsigned int fd, const char * buf,
300 size_t count, long dummy, loff_t pos)
301{
302 return sys_pwrite64(fd, buf, count, pos);
303}
304
305asmlinkage int sys_fadvise64_64_wrapper(int fd, u32 offset0, u32 offset1,
306 u32 len0, u32 len1, int advice)
307{
308#ifdef __LITTLE_ENDIAN__
309 return sys_fadvise64_64(fd, (u64)offset1 << 32 | offset0,
310 (u64)len1 << 32 | len0, advice);
311#else
312 return sys_fadvise64_64(fd, (u64)offset0 << 32 | offset1,
313 (u64)len0 << 32 | len1, advice);
314#endif
315}
316
317#if defined(CONFIG_CPU_SH2) || defined(CONFIG_CPU_SH2A)
318#define SYSCALL_ARG3 "trapa #0x23"
319#else
320#define SYSCALL_ARG3 "trapa #0x13"
321#endif
322
323/*
324 * Do a system call from kernel instead of calling sys_execve so we
325 * end up with proper pt_regs.
326 */
327int kernel_execve(const char *filename, char *const argv[], char *const envp[])
328{
329 register long __sc0 __asm__ ("r3") = __NR_execve;
330 register long __sc4 __asm__ ("r4") = (long) filename;
331 register long __sc5 __asm__ ("r5") = (long) argv;
332 register long __sc6 __asm__ ("r6") = (long) envp;
333 __asm__ __volatile__ (SYSCALL_ARG3 : "=z" (__sc0)
334 : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6)
335 : "memory");
336 return __sc0;
337}
diff --git a/arch/sh/kernel/sys_sh32.c b/arch/sh/kernel/sys_sh32.c
new file mode 100644
index 000000000000..125e493ead82
--- /dev/null
+++ b/arch/sh/kernel/sys_sh32.c
@@ -0,0 +1,84 @@
1#include <linux/errno.h>
2#include <linux/sched.h>
3#include <linux/mm.h>
4#include <linux/smp.h>
5#include <linux/sem.h>
6#include <linux/msg.h>
7#include <linux/shm.h>
8#include <linux/stat.h>
9#include <linux/syscalls.h>
10#include <linux/mman.h>
11#include <linux/file.h>
12#include <linux/utsname.h>
13#include <linux/module.h>
14#include <linux/fs.h>
15#include <linux/ipc.h>
16#include <asm/cacheflush.h>
17#include <asm/uaccess.h>
18#include <asm/unistd.h>
19
20/*
21 * sys_pipe() is the normal C calling standard for creating
22 * a pipe. It's not the way Unix traditionally does this, though.
23 */
24asmlinkage int sys_pipe(unsigned long r4, unsigned long r5,
25 unsigned long r6, unsigned long r7,
26 struct pt_regs __regs)
27{
28 struct pt_regs *regs = RELOC_HIDE(&__regs, 0);
29 int fd[2];
30 int error;
31
32 error = do_pipe(fd);
33 if (!error) {
34 regs->regs[1] = fd[1];
35 return fd[0];
36 }
37 return error;
38}
39
40asmlinkage ssize_t sys_pread_wrapper(unsigned int fd, char * buf,
41 size_t count, long dummy, loff_t pos)
42{
43 return sys_pread64(fd, buf, count, pos);
44}
45
46asmlinkage ssize_t sys_pwrite_wrapper(unsigned int fd, const char * buf,
47 size_t count, long dummy, loff_t pos)
48{
49 return sys_pwrite64(fd, buf, count, pos);
50}
51
52asmlinkage int sys_fadvise64_64_wrapper(int fd, u32 offset0, u32 offset1,
53 u32 len0, u32 len1, int advice)
54{
55#ifdef __LITTLE_ENDIAN__
56 return sys_fadvise64_64(fd, (u64)offset1 << 32 | offset0,
57 (u64)len1 << 32 | len0, advice);
58#else
59 return sys_fadvise64_64(fd, (u64)offset0 << 32 | offset1,
60 (u64)len0 << 32 | len1, advice);
61#endif
62}
63
64#if defined(CONFIG_CPU_SH2) || defined(CONFIG_CPU_SH2A)
65#define SYSCALL_ARG3 "trapa #0x23"
66#else
67#define SYSCALL_ARG3 "trapa #0x13"
68#endif
69
70/*
71 * Do a system call from kernel instead of calling sys_execve so we
72 * end up with proper pt_regs.
73 */
74int kernel_execve(const char *filename, char *const argv[], char *const envp[])
75{
76 register long __sc0 __asm__ ("r3") = __NR_execve;
77 register long __sc4 __asm__ ("r4") = (long) filename;
78 register long __sc5 __asm__ ("r5") = (long) argv;
79 register long __sc6 __asm__ ("r6") = (long) envp;
80 __asm__ __volatile__ (SYSCALL_ARG3 : "=z" (__sc0)
81 : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6)
82 : "memory");
83 return __sc0;
84}
diff --git a/arch/sh/kernel/sys_sh64.c b/arch/sh/kernel/sys_sh64.c
index de0a303ba26f..578004d71e02 100644
--- a/arch/sh/kernel/sys_sh64.c
+++ b/arch/sh/kernel/sys_sh64.c
@@ -1,9 +1,5 @@
1/* 1/*
2 * This file is subject to the terms and conditions of the GNU General Public 2 * arch/sh/kernel/sys_sh64.c
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * arch/sh64/kernel/sys_sh64.c
7 * 3 *
8 * Copyright (C) 2000, 2001 Paolo Alberelli 4 * Copyright (C) 2000, 2001 Paolo Alberelli
9 * 5 *
@@ -11,10 +7,10 @@
11 * have a non-standard calling sequence on the Linux/SH5 7 * have a non-standard calling sequence on the Linux/SH5
12 * platform. 8 * platform.
13 * 9 *
14 * Mostly taken from i386 version. 10 * This file is subject to the terms and conditions of the GNU General Public
15 * 11 * License. See the file "COPYING" in the main directory of this archive
12 * for more details.
16 */ 13 */
17
18#include <linux/errno.h> 14#include <linux/errno.h>
19#include <linux/rwsem.h> 15#include <linux/rwsem.h>
20#include <linux/sched.h> 16#include <linux/sched.h>
@@ -34,48 +30,10 @@
34#include <asm/ptrace.h> 30#include <asm/ptrace.h>
35#include <asm/unistd.h> 31#include <asm/unistd.h>
36 32
37#define REG_3 3
38
39/* 33/*
40 * sys_pipe() is the normal C calling standard for creating 34 * sys_pipe() is the normal C calling standard for creating
41 * a pipe. It's not the way Unix traditionally does this, though. 35 * a pipe. It's not the way Unix traditionally does this, though.
42 */ 36 */
43#ifdef NEW_PIPE_IMPLEMENTATION
44asmlinkage int sys_pipe(unsigned long * fildes,
45 unsigned long dummy_r3,
46 unsigned long dummy_r4,
47 unsigned long dummy_r5,
48 unsigned long dummy_r6,
49 unsigned long dummy_r7,
50 struct pt_regs * regs) /* r8 = pt_regs forced by entry.S */
51{
52 int fd[2];
53 int ret;
54
55 ret = do_pipe(fd);
56 if (ret == 0)
57 /*
58 ***********************************************************************
59 * To avoid the copy_to_user we prefer to break the ABIs convention, *
60 * packing the valid pair of file IDs into a single register (r3); *
61 * while r2 is the return code as defined by the sh5-ABIs. *
62 * BE CAREFUL: pipe stub, into glibc, must be aware of this solution *
63 ***********************************************************************
64
65#ifdef __LITTLE_ENDIAN__
66 regs->regs[REG_3] = (((unsigned long long) fd[1]) << 32) | ((unsigned long long) fd[0]);
67#else
68 regs->regs[REG_3] = (((unsigned long long) fd[0]) << 32) | ((unsigned long long) fd[1]);
69#endif
70
71 */
72 /* although not very clever this is endianess independent */
73 regs->regs[REG_3] = (unsigned long long) *((unsigned long long *) fd);
74
75 return ret;
76}
77
78#else
79asmlinkage int sys_pipe(unsigned long * fildes) 37asmlinkage int sys_pipe(unsigned long * fildes)
80{ 38{
81 int fd[2]; 39 int fd[2];
@@ -89,202 +47,6 @@ asmlinkage int sys_pipe(unsigned long * fildes)
89 return error; 47 return error;
90} 48}
91 49
92#endif
93
94/*
95 * To avoid cache alias, we map the shard page with same color.
96 */
97#define COLOUR_ALIGN(addr) (((addr)+SHMLBA-1)&~(SHMLBA-1))
98
99unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
100 unsigned long len, unsigned long pgoff, unsigned long flags)
101{
102 struct vm_area_struct *vma;
103
104 if (flags & MAP_FIXED) {
105 /* We do not accept a shared mapping if it would violate
106 * cache aliasing constraints.
107 */
108 if ((flags & MAP_SHARED) && (addr & (SHMLBA - 1)))
109 return -EINVAL;
110 return addr;
111 }
112
113 if (len > TASK_SIZE)
114 return -ENOMEM;
115 if (!addr)
116 addr = TASK_UNMAPPED_BASE;
117
118 if (flags & MAP_PRIVATE)
119 addr = PAGE_ALIGN(addr);
120 else
121 addr = COLOUR_ALIGN(addr);
122
123 for (vma = find_vma(current->mm, addr); ; vma = vma->vm_next) {
124 /* At this point: (!vma || addr < vma->vm_end). */
125 if (TASK_SIZE - len < addr)
126 return -ENOMEM;
127 if (!vma || addr + len <= vma->vm_start)
128 return addr;
129 addr = vma->vm_end;
130 if (!(flags & MAP_PRIVATE))
131 addr = COLOUR_ALIGN(addr);
132 }
133}
134
135/* common code for old and new mmaps */
136static inline long do_mmap2(
137 unsigned long addr, unsigned long len,
138 unsigned long prot, unsigned long flags,
139 unsigned long fd, unsigned long pgoff)
140{
141 int error = -EBADF;
142 struct file * file = NULL;
143
144 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
145 if (!(flags & MAP_ANONYMOUS)) {
146 file = fget(fd);
147 if (!file)
148 goto out;
149 }
150
151 down_write(&current->mm->mmap_sem);
152 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
153 up_write(&current->mm->mmap_sem);
154
155 if (file)
156 fput(file);
157out:
158 return error;
159}
160
161asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
162 unsigned long prot, unsigned long flags,
163 unsigned long fd, unsigned long pgoff)
164{
165 return do_mmap2(addr, len, prot, flags, fd, pgoff);
166}
167
168asmlinkage int old_mmap(unsigned long addr, unsigned long len,
169 unsigned long prot, unsigned long flags,
170 int fd, unsigned long off)
171{
172 if (off & ~PAGE_MASK)
173 return -EINVAL;
174 return do_mmap2(addr, len, prot, flags, fd, off>>PAGE_SHIFT);
175}
176
177/*
178 * sys_ipc() is the de-multiplexer for the SysV IPC calls..
179 *
180 * This is really horribly ugly.
181 */
182asmlinkage int sys_ipc(uint call, int first, int second,
183 int third, void __user *ptr, long fifth)
184{
185 int version, ret;
186
187 version = call >> 16; /* hack for backward compatibility */
188 call &= 0xffff;
189
190 if (call <= SEMCTL)
191 switch (call) {
192 case SEMOP:
193 return sys_semtimedop(first, (struct sembuf __user *)ptr,
194 second, NULL);
195 case SEMTIMEDOP:
196 return sys_semtimedop(first, (struct sembuf __user *)ptr,
197 second,
198 (const struct timespec __user *)fifth);
199 case SEMGET:
200 return sys_semget (first, second, third);
201 case SEMCTL: {
202 union semun fourth;
203 if (!ptr)
204 return -EINVAL;
205 if (get_user(fourth.__pad, (void * __user *) ptr))
206 return -EFAULT;
207 return sys_semctl (first, second, third, fourth);
208 }
209 default:
210 return -EINVAL;
211 }
212
213 if (call <= MSGCTL)
214 switch (call) {
215 case MSGSND:
216 return sys_msgsnd (first, (struct msgbuf __user *) ptr,
217 second, third);
218 case MSGRCV:
219 switch (version) {
220 case 0: {
221 struct ipc_kludge tmp;
222 if (!ptr)
223 return -EINVAL;
224
225 if (copy_from_user(&tmp,
226 (struct ipc_kludge __user *) ptr,
227 sizeof (tmp)))
228 return -EFAULT;
229 return sys_msgrcv (first, tmp.msgp, second,
230 tmp.msgtyp, third);
231 }
232 default:
233 return sys_msgrcv (first,
234 (struct msgbuf __user *) ptr,
235 second, fifth, third);
236 }
237 case MSGGET:
238 return sys_msgget ((key_t) first, second);
239 case MSGCTL:
240 return sys_msgctl (first, second,
241 (struct msqid_ds __user *) ptr);
242 default:
243 return -EINVAL;
244 }
245 if (call <= SHMCTL)
246 switch (call) {
247 case SHMAT:
248 switch (version) {
249 default: {
250 ulong raddr;
251 ret = do_shmat (first, (char __user *) ptr,
252 second, &raddr);
253 if (ret)
254 return ret;
255 return put_user (raddr, (ulong __user *) third);
256 }
257 case 1: /* iBCS2 emulator entry point */
258 if (!segment_eq(get_fs(), get_ds()))
259 return -EINVAL;
260 return do_shmat (first, (char __user *) ptr,
261 second, (ulong *) third);
262 }
263 case SHMDT:
264 return sys_shmdt ((char __user *)ptr);
265 case SHMGET:
266 return sys_shmget (first, second, third);
267 case SHMCTL:
268 return sys_shmctl (first, second,
269 (struct shmid_ds __user *) ptr);
270 default:
271 return -EINVAL;
272 }
273
274 return -EINVAL;
275}
276
277asmlinkage int sys_uname(struct old_utsname * name)
278{
279 int err;
280 if (!name)
281 return -EFAULT;
282 down_read(&uts_sem);
283 err = copy_to_user(name, utsname(), sizeof (*name));
284 up_read(&uts_sem);
285 return err?-EFAULT:0;
286}
287
288/* 50/*
289 * Do a system call from kernel instead of calling sys_execve so we 51 * Do a system call from kernel instead of calling sys_execve so we
290 * end up with proper pt_regs. 52 * end up with proper pt_regs.
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-25 22:22:52 -0500