Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/sparc64/kernel/sys_sparc.c b/arch/sparc64/kernel/sys_sparc.c
new file mode 100644
index 0000000..0077f02
--- /dev/null
+++ b/arch/sparc64/kernel/sys_sparc.c
@@ -0,0 +1,723 @@
+/* $Id: sys_sparc.c,v 1.57 2002/02/09 19:49:30 davem Exp $
+ * linux/arch/sparc64/kernel/sys_sparc.c
+ *
+ * This file contains various random system calls that
+ * have a non-standard calling sequence on the Linux/sparc
+ * platform.
+ */
+
+#include <linux/config.h>
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/mm.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/stat.h>
+#include <linux/mman.h>
+#include <linux/utsname.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/slab.h>
+#include <linux/syscalls.h>
+#include <linux/ipc.h>
+#include <linux/personality.h>
+
+#include <asm/uaccess.h>
+#include <asm/ipc.h>
+#include <asm/utrap.h>
+#include <asm/perfctr.h>
+
+/* #define DEBUG_UNIMP_SYSCALL */
+
+/* XXX Make this per-binary type, this way we can detect the type of
+ * XXX a binary. Every Sparc executable calls this very early on.
+ */
+asmlinkage unsigned long sys_getpagesize(void)
+{
+ return PAGE_SIZE;
+}
+
+#define COLOUR_ALIGN(addr,pgoff) \
+ ((((addr)+SHMLBA-1)&~(SHMLBA-1)) + \
+ (((pgoff)<<PAGE_SHIFT) & (SHMLBA-1)))
+
+unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags)
+{
+ struct mm_struct *mm = current->mm;
+ struct vm_area_struct * vma;
+ unsigned long task_size = TASK_SIZE;
+ unsigned long start_addr;
+ int do_color_align;
+
+ if (flags & MAP_FIXED) {
+ /* We do not accept a shared mapping if it would violate
+ * cache aliasing constraints.
+ */
+ if ((flags & MAP_SHARED) &&
+ ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
+ return -EINVAL;
+ return addr;
+ }
+
+ if (test_thread_flag(TIF_32BIT))
+ task_size = 0xf0000000UL;
+ if (len > task_size || len > -PAGE_OFFSET)
+ return -ENOMEM;
+
+ do_color_align = 0;
+ if (filp || (flags & MAP_SHARED))
+ do_color_align = 1;
+
+ if (addr) {
+ if (do_color_align)
+ addr = COLOUR_ALIGN(addr, pgoff);
+ else
+ addr = PAGE_ALIGN(addr);
+
+ vma = find_vma(mm, addr);
+ if (task_size - len >= addr &&
+ (!vma || addr + len <= vma->vm_start))
+ return addr;
+ }
+
+ start_addr = addr = mm->free_area_cache;
+
+ task_size -= len;
+
+full_search:
+ if (do_color_align)
+ addr = COLOUR_ALIGN(addr, pgoff);
+ else
+ addr = PAGE_ALIGN(addr);
+
+ for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
+ /* At this point: (!vma || addr < vma->vm_end). */
+ if (addr < PAGE_OFFSET && -PAGE_OFFSET - len < addr) {
+ addr = PAGE_OFFSET;
+ vma = find_vma(mm, PAGE_OFFSET);
+ }
+ if (task_size < addr) {
+ if (start_addr != TASK_UNMAPPED_BASE) {
+ start_addr = addr = TASK_UNMAPPED_BASE;
+ goto full_search;
+ }
+ return -ENOMEM;
+ }
+ if (!vma || addr + len <= vma->vm_start) {
+ /*
+ * Remember the place where we stopped the search:
+ */
+ mm->free_area_cache = addr + len;
+ return addr;
+ }
+ addr = vma->vm_end;
+ if (do_color_align)
+ addr = COLOUR_ALIGN(addr, pgoff);
+ }
+}
+
+/* Try to align mapping such that we align it as much as possible. */
+unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags)
+{
+ unsigned long align_goal, addr = -ENOMEM;
+
+ if (flags & MAP_FIXED) {
+ /* Ok, don't mess with it. */
+ return get_unmapped_area(NULL, addr, len, pgoff, flags);
+ }
+ flags &= ~MAP_SHARED;
+
+ align_goal = PAGE_SIZE;
+ if (len >= (4UL * 1024 * 1024))
+ align_goal = (4UL * 1024 * 1024);
+ else if (len >= (512UL * 1024))
+ align_goal = (512UL * 1024);
+ else if (len >= (64UL * 1024))
+ align_goal = (64UL * 1024);
+
+ do {
+ addr = get_unmapped_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags);
+ if (!(addr & ~PAGE_MASK)) {
+ addr = (addr + (align_goal - 1UL)) & ~(align_goal - 1UL);
+ break;
+ }
+
+ if (align_goal == (4UL * 1024 * 1024))
+ align_goal = (512UL * 1024);
+ else if (align_goal == (512UL * 1024))
+ align_goal = (64UL * 1024);
+ else
+ align_goal = PAGE_SIZE;
+ } while ((addr & ~PAGE_MASK) && align_goal > PAGE_SIZE);
+
+ /* Mapping is smaller than 64K or larger areas could not
+ * be obtained.
+ */
+ if (addr & ~PAGE_MASK)
+ addr = get_unmapped_area(NULL, orig_addr, len, pgoff, flags);
+
+ return addr;
+}
+
+asmlinkage unsigned long sparc_brk(unsigned long brk)
+{
+ /* People could try to be nasty and use ta 0x6d in 32bit programs */
+ if (test_thread_flag(TIF_32BIT) &&
+ brk >= 0xf0000000UL)
+ return current->mm->brk;
+
+ if ((current->mm->brk & PAGE_OFFSET) != (brk & PAGE_OFFSET))
+ return current->mm->brk;
+ return sys_brk(brk);
+}
+
+/*
+ * sys_pipe() is the normal C calling standard for creating
+ * a pipe. It's not the way unix traditionally does this, though.
+ */
+asmlinkage long sparc_pipe(struct pt_regs *regs)
+{
+ int fd[2];
+ int error;
+
+ error = do_pipe(fd);
+ if (error)
+ goto out;
+ regs->u_regs[UREG_I1] = fd[1];
+ error = fd[0];
+out:
+ return error;
+}
+
+/*
+ * sys_ipc() is the de-multiplexer for the SysV IPC calls..
+ *
+ * This is really horribly ugly.
+ */
+
+asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second,
+ unsigned long third, void __user *ptr, long fifth)
+{
+ int err;
+
+ /* No need for backward compatibility. We can start fresh... */
+ if (call <= SEMCTL) {
+ switch (call) {
+ case SEMOP:
+ err = sys_semtimedop(first, ptr,
+ (unsigned)second, NULL);
+ goto out;
+ case SEMTIMEDOP:
+ err = sys_semtimedop(first, ptr, (unsigned)second,
+ (const struct timespec __user *) fifth);
+ goto out;
+ case SEMGET:
+ err = sys_semget(first, (int)second, (int)third);
+ goto out;
+ case SEMCTL: {
+ union semun fourth;
+ err = -EINVAL;
+ if (!ptr)
+ goto out;
+ err = -EFAULT;
+ if (get_user(fourth.__pad,
+ (void __user * __user *) ptr))
+ goto out;
+ err = sys_semctl(first, (int)second | IPC_64,
+ (int)third, fourth);
+ goto out;
+ }
+ default:
+ err = -ENOSYS;
+ goto out;
+ };
+ }
+ if (call <= MSGCTL) {
+ switch (call) {
+ case MSGSND:
+ err = sys_msgsnd(first, ptr, (size_t)second,
+ (int)third);
+ goto out;
+ case MSGRCV:
+ err = sys_msgrcv(first, ptr, (size_t)second, fifth,
+ (int)third);
+ goto out;
+ case MSGGET:
+ err = sys_msgget((key_t)first, (int)second);
+ goto out;
+ case MSGCTL:
+ err = sys_msgctl(first, (int)second | IPC_64, ptr);
+ goto out;
+ default:
+ err = -ENOSYS;
+ goto out;
+ };
+ }
+ if (call <= SHMCTL) {
+ switch (call) {
+ case SHMAT: {
+ ulong raddr;
+ err = do_shmat(first, ptr, (int)second, &raddr);
+ if (!err) {
+ if (put_user(raddr,
+ (ulong __user *) third))
+ err = -EFAULT;
+ }
+ goto out;
+ }
+ case SHMDT:
+ err = sys_shmdt(ptr);
+ goto out;
+ case SHMGET:
+ err = sys_shmget(first, (size_t)second, (int)third);
+ goto out;
+ case SHMCTL:
+ err = sys_shmctl(first, (int)second | IPC_64, ptr);
+ goto out;
+ default:
+ err = -ENOSYS;
+ goto out;
+ };
+ } else {
+ err = -ENOSYS;
+ }
+out:
+ return err;
+}
+
+asmlinkage long sparc64_newuname(struct new_utsname __user *name)
+{
+ int ret = sys_newuname(name);
+
+ if (current->personality == PER_LINUX32 && !ret) {
+ ret = (copy_to_user(name->machine, "sparc\0\0", 8)
+ ? -EFAULT : 0);
+ }
+ return ret;
+}
+
+asmlinkage long sparc64_personality(unsigned long personality)
+{
+ int ret;
+
+ if (current->personality == PER_LINUX32 &&
+ personality == PER_LINUX)
+ personality = PER_LINUX32;
+ ret = sys_personality(personality);
+ if (ret == PER_LINUX32)
+ ret = PER_LINUX;
+
+ return ret;
+}
+
+/* Linux version of mmap */
+asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
+ unsigned long prot, unsigned long flags, unsigned long fd,
+ unsigned long off)
+{
+ struct file * file = NULL;
+ unsigned long retval = -EBADF;
+
+ if (!(flags & MAP_ANONYMOUS)) {
+ file = fget(fd);
+ if (!file)
+ goto out;
+ }
+ flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+ len = PAGE_ALIGN(len);
+ retval = -EINVAL;
+
+ if (test_thread_flag(TIF_32BIT)) {
+ if (len > 0xf0000000UL ||
+ ((flags & MAP_FIXED) && addr > 0xf0000000UL - len))
+ goto out_putf;
+ } else {
+ if (len > -PAGE_OFFSET ||
+ ((flags & MAP_FIXED) &&
+ addr < PAGE_OFFSET && addr + len > -PAGE_OFFSET))
+ goto out_putf;
+ }
+
+ down_write(¤t->mm->mmap_sem);
+ retval = do_mmap(file, addr, len, prot, flags, off);
+ up_write(¤t->mm->mmap_sem);
+
+out_putf:
+ if (file)
+ fput(file);
+out:
+ return retval;
+}
+
+asmlinkage long sys64_munmap(unsigned long addr, size_t len)
+{
+ long ret;
+
+ if (len > -PAGE_OFFSET ||
+ (addr < PAGE_OFFSET && addr + len > -PAGE_OFFSET))
+ return -EINVAL;
+ down_write(¤t->mm->mmap_sem);
+ ret = do_munmap(current->mm, addr, len);
+ up_write(¤t->mm->mmap_sem);
+ return ret;
+}
+
+extern unsigned long do_mremap(unsigned long addr,
+ unsigned long old_len, unsigned long new_len,
+ unsigned long flags, unsigned long new_addr);
+
+asmlinkage unsigned long sys64_mremap(unsigned long addr,
+ unsigned long old_len, unsigned long new_len,
+ unsigned long flags, unsigned long new_addr)
+{
+ struct vm_area_struct *vma;
+ unsigned long ret = -EINVAL;
+ if (test_thread_flag(TIF_32BIT))
+ goto out;
+ if (old_len > -PAGE_OFFSET || new_len > -PAGE_OFFSET)
+ goto out;
+ if (addr < PAGE_OFFSET && addr + old_len > -PAGE_OFFSET)
+ goto out;
+ down_write(¤t->mm->mmap_sem);
+ if (flags & MREMAP_FIXED) {
+ if (new_addr < PAGE_OFFSET &&
+ new_addr + new_len > -PAGE_OFFSET)
+ goto out_sem;
+ } else if (addr < PAGE_OFFSET && addr + new_len > -PAGE_OFFSET) {
+ unsigned long map_flags = 0;
+ struct file *file = NULL;
+
+ ret = -ENOMEM;
+ if (!(flags & MREMAP_MAYMOVE))
+ goto out_sem;
+
+ vma = find_vma(current->mm, addr);
+ if (vma) {
+ if (vma->vm_flags & VM_SHARED)
+ map_flags |= MAP_SHARED;
+ file = vma->vm_file;
+ }
+
+ /* MREMAP_FIXED checked above. */
+ new_addr = get_unmapped_area(file, addr, new_len,
+ vma ? vma->vm_pgoff : 0,
+ map_flags);
+ ret = new_addr;
+ if (new_addr & ~PAGE_MASK)
+ goto out_sem;
+ flags |= MREMAP_FIXED;
+ }
+ ret = do_mremap(addr, old_len, new_len, flags, new_addr);
+out_sem:
+ up_write(¤t->mm->mmap_sem);
+out:
+ return ret;
+}
+
+/* we come to here via sys_nis_syscall so it can setup the regs argument */
+asmlinkage unsigned long c_sys_nis_syscall(struct pt_regs *regs)
+{
+ static int count;
+
+ /* Don't make the system unusable, if someone goes stuck */
+ if (count++ > 5)
+ return -ENOSYS;
+
+ printk ("Unimplemented SPARC system call %ld\n",regs->u_regs[1]);
+#ifdef DEBUG_UNIMP_SYSCALL
+ show_regs (regs);
+#endif
+
+ return -ENOSYS;
+}
+
+/* #define DEBUG_SPARC_BREAKPOINT */
+
+asmlinkage void sparc_breakpoint(struct pt_regs *regs)
+{
+ siginfo_t info;
+
+ if (test_thread_flag(TIF_32BIT)) {
+ regs->tpc &= 0xffffffff;
+ regs->tnpc &= 0xffffffff;
+ }
+#ifdef DEBUG_SPARC_BREAKPOINT
+ printk ("TRAP: Entering kernel PC=%lx, nPC=%lx\n", regs->tpc, regs->tnpc);
+#endif
+ info.si_signo = SIGTRAP;
+ info.si_errno = 0;
+ info.si_code = TRAP_BRKPT;
+ info.si_addr = (void __user *)regs->tpc;
+ info.si_trapno = 0;
+ force_sig_info(SIGTRAP, &info, current);
+#ifdef DEBUG_SPARC_BREAKPOINT
+ printk ("TRAP: Returning to space: PC=%lx nPC=%lx\n", regs->tpc, regs->tnpc);
+#endif
+}
+
+extern void check_pending(int signum);
+
+asmlinkage long sys_getdomainname(char __user *name, int len)
+{
+ int nlen;
+ int err = -EFAULT;
+
+ down_read(&uts_sem);
+
+ nlen = strlen(system_utsname.domainname) + 1;
+
+ if (nlen < len)
+ len = nlen;
+ if (len > __NEW_UTS_LEN)
+ goto done;
+ if (copy_to_user(name, system_utsname.domainname, len))
+ goto done;
+ err = 0;
+done:
+ up_read(&uts_sem);
+ return err;
+}
+
+asmlinkage long solaris_syscall(struct pt_regs *regs)
+{
+ static int count;
+
+ regs->tpc = regs->tnpc;
+ regs->tnpc += 4;
+ if (test_thread_flag(TIF_32BIT)) {
+ regs->tpc &= 0xffffffff;
+ regs->tnpc &= 0xffffffff;
+ }
+ if (++count <= 5) {
+ printk ("For Solaris binary emulation you need solaris module loaded\n");
+ show_regs (regs);
+ }
+ send_sig(SIGSEGV, current, 1);
+
+ return -ENOSYS;
+}
+
+#ifndef CONFIG_SUNOS_EMUL
+asmlinkage long sunos_syscall(struct pt_regs *regs)
+{
+ static int count;
+
+ regs->tpc = regs->tnpc;
+ regs->tnpc += 4;
+ if (test_thread_flag(TIF_32BIT)) {
+ regs->tpc &= 0xffffffff;
+ regs->tnpc &= 0xffffffff;
+ }
+ if (++count <= 20)
+ printk ("SunOS binary emulation not compiled in\n");
+ force_sig(SIGSEGV, current);
+
+ return -ENOSYS;
+}
+#endif
+
+asmlinkage long sys_utrap_install(utrap_entry_t type,
+ utrap_handler_t new_p,
+ utrap_handler_t new_d,
+ utrap_handler_t __user *old_p,
+ utrap_handler_t __user *old_d)
+{
+ if (type < UT_INSTRUCTION_EXCEPTION || type > UT_TRAP_INSTRUCTION_31)
+ return -EINVAL;
+ if (new_p == (utrap_handler_t)(long)UTH_NOCHANGE) {
+ if (old_p) {
+ if (!current_thread_info()->utraps) {
+ if (put_user(NULL, old_p))
+ return -EFAULT;
+ } else {
+ if (put_user((utrap_handler_t)(current_thread_info()->utraps[type]), old_p))
+ return -EFAULT;
+ }
+ }
+ if (old_d) {
+ if (put_user(NULL, old_d))
+ return -EFAULT;
+ }
+ return 0;
+ }
+ if (!current_thread_info()->utraps) {
+ current_thread_info()->utraps =
+ kmalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long), GFP_KERNEL);
+ if (!current_thread_info()->utraps)
+ return -ENOMEM;
+ current_thread_info()->utraps[0] = 1;
+ memset(current_thread_info()->utraps+1, 0,
+ UT_TRAP_INSTRUCTION_31*sizeof(long));
+ } else {
+ if ((utrap_handler_t)current_thread_info()->utraps[type] != new_p &&
+ current_thread_info()->utraps[0] > 1) {
+ long *p = current_thread_info()->utraps;
+
+ current_thread_info()->utraps =
+ kmalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long),
+ GFP_KERNEL);
+ if (!current_thread_info()->utraps) {
+ current_thread_info()->utraps = p;
+ return -ENOMEM;
+ }
+ p[0]--;
+ current_thread_info()->utraps[0] = 1;
+ memcpy(current_thread_info()->utraps+1, p+1,
+ UT_TRAP_INSTRUCTION_31*sizeof(long));
+ }
+ }
+ if (old_p) {
+ if (put_user((utrap_handler_t)(current_thread_info()->utraps[type]), old_p))
+ return -EFAULT;
+ }
+ if (old_d) {
+ if (put_user(NULL, old_d))
+ return -EFAULT;
+ }
+ current_thread_info()->utraps[type] = (long)new_p;
+
+ return 0;
+}
+
+long sparc_memory_ordering(unsigned long model, struct pt_regs *regs)
+{
+ if (model >= 3)
+ return -EINVAL;
+ regs->tstate = (regs->tstate & ~TSTATE_MM) | (model << 14);
+ return 0;
+}
+
+asmlinkage long sys_rt_sigaction(int sig,
+ const struct sigaction __user *act,
+ struct sigaction __user *oact,
+ void __user *restorer,
+ size_t sigsetsize)
+{
+ struct k_sigaction new_ka, old_ka;
+ int ret;
+
+ /* XXX: Don't preclude handling different sized sigset_t's. */
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+
+ if (act) {
+ new_ka.ka_restorer = restorer;
+ if (copy_from_user(&new_ka.sa, act, sizeof(*act)))
+ return -EFAULT;
+ }
+
+ ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+ if (!ret && oact) {
+ if (copy_to_user(oact, &old_ka.sa, sizeof(*oact)))
+ return -EFAULT;
+ }
+
+ return ret;
+}
+
+/* Invoked by rtrap code to update performance counters in
+ * user space.
+ */
+asmlinkage void update_perfctrs(void)
+{
+ unsigned long pic, tmp;
+
+ read_pic(pic);
+ tmp = (current_thread_info()->kernel_cntd0 += (unsigned int)pic);
+ __put_user(tmp, current_thread_info()->user_cntd0);
+ tmp = (current_thread_info()->kernel_cntd1 += (pic >> 32));
+ __put_user(tmp, current_thread_info()->user_cntd1);
+ reset_pic();
+}
+
+asmlinkage long sys_perfctr(int opcode, unsigned long arg0, unsigned long arg1, unsigned long arg2)
+{
+ int err = 0;
+
+ switch(opcode) {
+ case PERFCTR_ON:
+ current_thread_info()->pcr_reg = arg2;
+ current_thread_info()->user_cntd0 = (u64 __user *) arg0;
+ current_thread_info()->user_cntd1 = (u64 __user *) arg1;
+ current_thread_info()->kernel_cntd0 =
+ current_thread_info()->kernel_cntd1 = 0;
+ write_pcr(arg2);
+ reset_pic();
+ set_thread_flag(TIF_PERFCTR);
+ break;
+
+ case PERFCTR_OFF:
+ err = -EINVAL;
+ if (test_thread_flag(TIF_PERFCTR)) {
+ current_thread_info()->user_cntd0 =
+ current_thread_info()->user_cntd1 = NULL;
+ current_thread_info()->pcr_reg = 0;
+ write_pcr(0);
+ clear_thread_flag(TIF_PERFCTR);
+ err = 0;
+ }
+ break;
+
+ case PERFCTR_READ: {
+ unsigned long pic, tmp;
+
+ if (!test_thread_flag(TIF_PERFCTR)) {
+ err = -EINVAL;
+ break;
+ }
+ read_pic(pic);
+ tmp = (current_thread_info()->kernel_cntd0 += (unsigned int)pic);
+ err |= __put_user(tmp, current_thread_info()->user_cntd0);
+ tmp = (current_thread_info()->kernel_cntd1 += (pic >> 32));
+ err |= __put_user(tmp, current_thread_info()->user_cntd1);
+ reset_pic();
+ break;
+ }
+
+ case PERFCTR_CLRPIC:
+ if (!test_thread_flag(TIF_PERFCTR)) {
+ err = -EINVAL;
+ break;
+ }
+ current_thread_info()->kernel_cntd0 =
+ current_thread_info()->kernel_cntd1 = 0;
+ reset_pic();
+ break;
+
+ case PERFCTR_SETPCR: {
+ u64 __user *user_pcr = (u64 __user *)arg0;
+
+ if (!test_thread_flag(TIF_PERFCTR)) {
+ err = -EINVAL;
+ break;
+ }
+ err |= __get_user(current_thread_info()->pcr_reg, user_pcr);
+ write_pcr(current_thread_info()->pcr_reg);
+ current_thread_info()->kernel_cntd0 =
+ current_thread_info()->kernel_cntd1 = 0;
+ reset_pic();
+ break;
+ }
+
+ case PERFCTR_GETPCR: {
+ u64 __user *user_pcr = (u64 __user *)arg0;
+
+ if (!test_thread_flag(TIF_PERFCTR)) {
+ err = -EINVAL;
+ break;
+ }
+ err |= __put_user(current_thread_info()->pcr_reg, user_pcr);
+ break;
+ }
+
+ default:
+ err = -EINVAL;
+ break;
+ };
+ return err;
+}