diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/sparc/kernel/sys_sparc_32.c')
-rw-r--r-- | ANDROID_3.4.5/arch/sparc/kernel/sys_sparc_32.c | 300 |
1 files changed, 0 insertions, 300 deletions
diff --git a/ANDROID_3.4.5/arch/sparc/kernel/sys_sparc_32.c b/ANDROID_3.4.5/arch/sparc/kernel/sys_sparc_32.c deleted file mode 100644 index 42b282fa..00000000 --- a/ANDROID_3.4.5/arch/sparc/kernel/sys_sparc_32.c +++ /dev/null @@ -1,300 +0,0 @@ -/* linux/arch/sparc/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/errno.h> -#include <linux/types.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/fs.h> -#include <linux/file.h> -#include <linux/sem.h> -#include <linux/msg.h> -#include <linux/shm.h> -#include <linux/stat.h> -#include <linux/syscalls.h> -#include <linux/mman.h> -#include <linux/utsname.h> -#include <linux/smp.h> -#include <linux/ipc.h> - -#include <asm/uaccess.h> -#include <asm/unistd.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; /* Possibly older binaries want 8192 on sun4's? */ -} - -#define COLOUR_ALIGN(addr) (((addr)+SHMLBA-1)&~(SHMLBA-1)) - -unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) -{ - struct vm_area_struct * vmm; - - 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; - } - - /* See asm-sparc/uaccess.h */ - if (len > TASK_SIZE - PAGE_SIZE) - return -ENOMEM; - if (ARCH_SUN4C && len > 0x20000000) - return -ENOMEM; - if (!addr) - addr = TASK_UNMAPPED_BASE; - - if (flags & MAP_SHARED) - addr = COLOUR_ALIGN(addr); - else - addr = PAGE_ALIGN(addr); - - for (vmm = find_vma(current->mm, addr); ; vmm = vmm->vm_next) { - /* At this point: (!vmm || addr < vmm->vm_end). */ - if (ARCH_SUN4C && addr < 0xe0000000 && 0x20000000 - len < addr) { - addr = PAGE_OFFSET; - vmm = find_vma(current->mm, PAGE_OFFSET); - } - if (TASK_SIZE - PAGE_SIZE - len < addr) - return -ENOMEM; - if (!vmm || addr + len <= vmm->vm_start) - return addr; - addr = vmm->vm_end; - if (flags & MAP_SHARED) - addr = COLOUR_ALIGN(addr); - } -} - -/* - * sys_pipe() is the normal C calling standard for creating - * a pipe. It's not the way unix traditionally does this, though. - */ -asmlinkage int sparc_pipe(struct pt_regs *regs) -{ - int fd[2]; - int error; - - error = do_pipe_flags(fd, 0); - if (error) - goto out; - regs->u_regs[UREG_I1] = fd[1]; - error = fd[0]; -out: - return error; -} - -int sparc_mmap_check(unsigned long addr, unsigned long len) -{ - if (ARCH_SUN4C && - (len > 0x20000000 || - (addr < 0xe0000000 && addr + len > 0x20000000))) - return -EINVAL; - - /* See asm-sparc/uaccess.h */ - if (len > TASK_SIZE - PAGE_SIZE || addr + len > TASK_SIZE - PAGE_SIZE) - return -EINVAL; - - return 0; -} - -/* Linux version of mmap */ - -asmlinkage unsigned long sys_mmap2(unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, unsigned long fd, - unsigned long pgoff) -{ - /* Make sure the shift for mmap2 is constant (12), no matter what PAGE_SIZE - we have. */ - return sys_mmap_pgoff(addr, len, prot, flags, fd, - pgoff >> (PAGE_SHIFT - 12)); -} - -asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, unsigned long fd, - unsigned long off) -{ - /* no alignment check? */ - return sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT); -} - -long sparc_remap_file_pages(unsigned long start, unsigned long size, - unsigned long prot, unsigned long pgoff, - unsigned long flags) -{ - /* This works on an existing mmap so we don't need to validate - * the range as that was done at the original mmap call. - */ - return sys_remap_file_pages(start, size, prot, - (pgoff >> (PAGE_SHIFT - 12)), flags); -} - -/* 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 = 0; - - if (count++ > 5) - return -ENOSYS; - printk ("%s[%d]: Unimplemented SPARC system call %d\n", - current->comm, task_pid_nr(current), (int)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; - -#ifdef DEBUG_SPARC_BREAKPOINT - printk ("TRAP: Entering kernel PC=%x, nPC=%x\n", regs->pc, regs->npc); -#endif - info.si_signo = SIGTRAP; - info.si_errno = 0; - info.si_code = TRAP_BRKPT; - info.si_addr = (void __user *)regs->pc; - info.si_trapno = 0; - force_sig_info(SIGTRAP, &info, current); - -#ifdef DEBUG_SPARC_BREAKPOINT - printk ("TRAP: Returning to space: PC=%x nPC=%x\n", regs->pc, regs->npc); -#endif -} - -asmlinkage int -sparc_sigaction (int sig, const struct old_sigaction __user *act, - struct old_sigaction __user *oact) -{ - struct k_sigaction new_ka, old_ka; - int ret; - - WARN_ON_ONCE(sig >= 0); - sig = -sig; - - if (act) { - unsigned long mask; - - if (!access_ok(VERIFY_READ, act, sizeof(*act)) || - __get_user(new_ka.sa.sa_handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_restorer, &act->sa_restorer)) - return -EFAULT; - __get_user(new_ka.sa.sa_flags, &act->sa_flags); - __get_user(mask, &act->sa_mask); - siginitset(&new_ka.sa.sa_mask, mask); - new_ka.ka_restorer = NULL; - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - /* In the clone() case we could copy half consistent - * state to the user, however this could sleep and - * deadlock us if we held the signal lock on SMP. So for - * now I take the easy way out and do no locking. - */ - if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || - __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer)) - return -EFAULT; - __put_user(old_ka.sa.sa_flags, &oact->sa_flags); - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); - } - - return ret; -} - -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; -} - -asmlinkage int sys_getdomainname(char __user *name, int len) -{ - int nlen, err; - - if (len < 0) - return -EINVAL; - - down_read(&uts_sem); - - nlen = strlen(utsname()->domainname) + 1; - err = -EINVAL; - if (nlen > len) - goto out; - - err = -EFAULT; - if (!copy_to_user(name, utsname()->domainname, nlen)) - err = 0; - -out: - up_read(&uts_sem); - return err; -} - -/* - * 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[]) -{ - long __res; - register long __g1 __asm__ ("g1") = __NR_execve; - register long __o0 __asm__ ("o0") = (long)(filename); - register long __o1 __asm__ ("o1") = (long)(argv); - register long __o2 __asm__ ("o2") = (long)(envp); - asm volatile ("t 0x10\n\t" - "bcc 1f\n\t" - "mov %%o0, %0\n\t" - "sub %%g0, %%o0, %0\n\t" - "1:\n\t" - : "=r" (__res), "=&r" (__o0) - : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) - : "cc"); - return __res; -} |