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 wrap_sys_shmat(int shmid, char __user *shmaddr, int shmflg)
21 return do_shmat(shmid, shmaddr, shmflg, &raddr) ?: (long) raddr;
25 extern int modify_ldt(int func, void *ptr, unsigned long bytecount);
27 long sys_modify_ldt_tt(int func, void *ptr, unsigned long bytecount)
29 /* XXX This should check VERIFY_WRITE depending on func, check this
32 if(verify_area(VERIFY_READ, ptr, bytecount))
34 return(modify_ldt(func, ptr, bytecount));
38 #ifdef CONFIG_MODE_SKAS
39 extern int userspace_pid;
41 #ifndef __NR_mm_indirect
42 #define __NR_mm_indirect 241
45 long sys_modify_ldt_skas(int func, void *ptr, unsigned long bytecount)
47 unsigned long args[6];
51 buf = kmalloc(bytecount, GFP_KERNEL);
60 res = copy_from_user(buf, ptr, bytecount);
70 args[1] = (unsigned long) buf;
72 res = syscall(__NR_mm_indirect, ¤t->mm->context.u,
73 __NR_modify_ldt, args);
82 res = copy_to_user(ptr, buf, n);
96 long sys_modify_ldt(int func, void *ptr, unsigned long bytecount)
98 return(CHOOSE_MODE_PROC(sys_modify_ldt_tt, sys_modify_ldt_skas, func,
102 #ifdef CONFIG_MODE_TT
103 extern long arch_prctl(int code, unsigned long addr);
105 static long arch_prctl_tt(int code, unsigned long addr)
113 ret = arch_prctl(code, addr);
117 ret = arch_prctl(code, (unsigned long) &tmp);
119 ret = put_user(tmp, &addr);
130 #ifdef CONFIG_MODE_SKAS
132 static long arch_prctl_skas(int code, unsigned long addr)
138 current->thread.regs.regs.skas.regs[GS_BASE / sizeof(unsigned long)] = addr;
141 current->thread.regs.regs.skas.regs[FS_BASE / sizeof(unsigned long)] = addr;
144 ret = put_user(current->thread.regs.regs.skas.regs[GS / sizeof(unsigned long)], &addr);
147 ret = put_user(current->thread.regs.regs.skas.regs[FS / sizeof(unsigned \
159 long sys_arch_prctl(int code, unsigned long addr)
161 return(CHOOSE_MODE_PROC(arch_prctl_tt, arch_prctl_skas, code, addr));
164 long sys_clone(unsigned long clone_flags, unsigned long newsp,
165 void __user *parent_tid, void __user *child_tid)
169 /* XXX: normal arch do here this pass, and also pass the regs to
170 * do_fork, instead of NULL. Currently the arch-independent code
171 * ignores these values, while the UML code (actually it's
172 * copy_thread) does the right thing. But this should change,
175 newsp = UPT_SP(current->thread.regs);*/
176 current->thread.forking = 1;
177 ret = do_fork(clone_flags, newsp, NULL, 0, parent_tid, child_tid);
178 current->thread.forking = 0;
183 * Overrides for Emacs so that we follow Linus's tabbing style.
184 * Emacs will notice this stuff at the end of the file and automatically
185 * adjust the settings for this buffer only. This must remain at the end
187 * ---------------------------------------------------------------------------
189 * c-file-style: "linux"