2 * Copyright 2003 PathScale, Inc.
4 * Licensed under the GPL
7 #include "linux/linkage.h"
8 #include "linux/slab.h"
10 #include "asm/uaccess.h"
11 #define __FRAME_OFFSETS
12 #include "asm/ptrace.h"
13 #include "asm/unistd.h"
14 #include "asm/prctl.h" /* XXX This should get the constants from libc */
15 #include "choose-mode.h"
17 asmlinkage long sys_uname64(struct new_utsname __user * name)
21 err = copy_to_user(name, &system_utsname, sizeof (*name));
23 if (personality(current->personality) == PER_LINUX32)
24 err |= copy_to_user(&name->machine, "i686", 5);
25 return err ? -EFAULT : 0;
29 extern int modify_ldt(int func, void *ptr, unsigned long bytecount);
31 long sys_modify_ldt_tt(int func, void *ptr, unsigned long bytecount)
33 /* XXX This should check VERIFY_WRITE depending on func, check this
36 if (!access_ok(VERIFY_READ, ptr, bytecount))
38 return(modify_ldt(func, ptr, bytecount));
42 #ifdef CONFIG_MODE_SKAS
43 extern int userspace_pid[];
45 long sys_modify_ldt_skas(int func, void *ptr, unsigned long bytecount)
47 struct ptrace_ldt ldt;
51 buf = kmalloc(bytecount, GFP_KERNEL);
60 res = copy_from_user(buf, ptr, bytecount);
69 ldt = ((struct ptrace_ldt) { .func = func,
71 .bytecount = bytecount });
72 #warning Need to look up userspace_pid by cpu
73 res = ptrace(PTRACE_LDT, userspace_pid[0], 0, (unsigned long) &ldt);
81 res = copy_to_user(ptr, buf, n);
95 long sys_modify_ldt(int func, void *ptr, unsigned long bytecount)
97 return(CHOOSE_MODE_PROC(sys_modify_ldt_tt, sys_modify_ldt_skas, func,
101 #ifdef CONFIG_MODE_TT
102 extern long arch_prctl(int code, unsigned long addr);
104 static long arch_prctl_tt(int code, unsigned long addr)
112 ret = arch_prctl(code, addr);
116 ret = arch_prctl(code, (unsigned long) &tmp);
118 ret = put_user(tmp, &addr);
129 #ifdef CONFIG_MODE_SKAS
131 static long arch_prctl_skas(int code, unsigned long addr)
137 current->thread.regs.regs.skas.regs[GS_BASE / sizeof(unsigned long)] = addr;
140 current->thread.regs.regs.skas.regs[FS_BASE / sizeof(unsigned long)] = addr;
143 ret = put_user(current->thread.regs.regs.skas.regs[GS / sizeof(unsigned long)], &addr);
146 ret = put_user(current->thread.regs.regs.skas.regs[FS / sizeof(unsigned \
158 long sys_arch_prctl(int code, unsigned long addr)
160 return(CHOOSE_MODE_PROC(arch_prctl_tt, arch_prctl_skas, code, addr));
163 long sys_clone(unsigned long clone_flags, unsigned long newsp,
164 void __user *parent_tid, void __user *child_tid)
168 /* XXX: normal arch do here this pass, and also pass the regs to
169 * do_fork, instead of NULL. Currently the arch-independent code
170 * ignores these values, while the UML code (actually it's
171 * copy_thread) does the right thing. But this should change,
174 newsp = UPT_SP(current->thread.regs);*/
175 current->thread.forking = 1;
176 ret = do_fork(clone_flags, newsp, NULL, 0, parent_tid, child_tid);
177 current->thread.forking = 0;
182 * Overrides for Emacs so that we follow Linus's tabbing style.
183 * Emacs will notice this stuff at the end of the file and automatically
184 * adjust the settings for this buffer only. This must remain at the end
186 * ---------------------------------------------------------------------------
188 * c-file-style: "linux"