2 * Copyright 2003 PathScale, Inc.
4 * Licensed under the GPL
7 #include "linux/linkage.h"
8 #include "linux/slab.h"
10 #include "linux/utsname.h"
11 #include "linux/personality.h"
12 #include "asm/uaccess.h"
13 #define __FRAME_OFFSETS
14 #include "asm/ptrace.h"
15 #include "asm/unistd.h"
16 #include "asm/prctl.h" /* XXX This should get the constants from libc */
17 #include "choose-mode.h"
19 asmlinkage long sys_uname64(struct new_utsname __user * name)
23 err = copy_to_user(name, &system_utsname, sizeof (*name));
25 if (personality(current->personality) == PER_LINUX32)
26 err |= copy_to_user(&name->machine, "i686", 5);
27 return err ? -EFAULT : 0;
31 extern int modify_ldt(int func, void *ptr, unsigned long bytecount);
33 long sys_modify_ldt_tt(int func, void *ptr, unsigned long bytecount)
35 /* XXX This should check VERIFY_WRITE depending on func, check this
38 if (!access_ok(VERIFY_READ, ptr, bytecount))
40 return(modify_ldt(func, ptr, bytecount));
44 #ifdef CONFIG_MODE_SKAS
45 extern int userspace_pid[];
47 #include "skas_ptrace.h"
49 long sys_modify_ldt_skas(int func, void *ptr, unsigned long bytecount)
51 struct ptrace_ldt ldt;
55 buf = kmalloc(bytecount, GFP_KERNEL);
64 res = copy_from_user(buf, ptr, bytecount);
73 ldt = ((struct ptrace_ldt) { .func = func,
75 .bytecount = bytecount });
76 #warning Need to look up userspace_pid by cpu
77 res = ptrace(PTRACE_LDT, userspace_pid[0], 0, (unsigned long) &ldt);
85 res = copy_to_user(ptr, buf, n);
99 long sys_modify_ldt(int func, void *ptr, unsigned long bytecount)
101 return(CHOOSE_MODE_PROC(sys_modify_ldt_tt, sys_modify_ldt_skas, func,
105 #ifdef CONFIG_MODE_TT
106 extern long arch_prctl(int code, unsigned long addr);
108 static long arch_prctl_tt(int code, unsigned long addr)
116 ret = arch_prctl(code, addr);
120 ret = arch_prctl(code, (unsigned long) &tmp);
122 ret = put_user(tmp, &addr);
133 #ifdef CONFIG_MODE_SKAS
135 static long arch_prctl_skas(int code, unsigned long addr)
141 current->thread.regs.regs.skas.regs[GS_BASE / sizeof(unsigned long)] = addr;
144 current->thread.regs.regs.skas.regs[FS_BASE / sizeof(unsigned long)] = addr;
147 ret = put_user(current->thread.regs.regs.skas.regs[GS / sizeof(unsigned long)], &addr);
150 ret = put_user(current->thread.regs.regs.skas.regs[FS / sizeof(unsigned \
162 long sys_arch_prctl(int code, unsigned long addr)
164 return(CHOOSE_MODE_PROC(arch_prctl_tt, arch_prctl_skas, code, addr));
167 long sys_clone(unsigned long clone_flags, unsigned long newsp,
168 void __user *parent_tid, void __user *child_tid)
172 /* XXX: normal arch do here this pass, and also pass the regs to
173 * do_fork, instead of NULL. Currently the arch-independent code
174 * ignores these values, while the UML code (actually it's
175 * copy_thread) does the right thing. But this should change,
178 newsp = UPT_SP(current->thread.regs);*/
179 current->thread.forking = 1;
180 ret = do_fork(clone_flags, newsp, NULL, 0, parent_tid, child_tid);
181 current->thread.forking = 0;
186 * Overrides for Emacs so that we follow Linus's tabbing style.
187 * Emacs will notice this stuff at the end of the file and automatically
188 * adjust the settings for this buffer only. This must remain at the end
190 * ---------------------------------------------------------------------------
192 * c-file-style: "linux"