2 * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
3 * Licensed under the GPL
7 #include <asm/sigcontext.h>
8 #include <sys/ptrace.h>
9 #include <linux/ptrace.h>
10 #include "sysdep/ptrace.h"
11 #include "sysdep/ptrace_user.h"
12 #include "kern_util.h"
14 #include "sigcontext.h"
16 extern int userspace_pid;
18 int copy_sc_from_user_skas(union uml_pt_regs *regs, void *from_ptr)
20 struct sigcontext sc, *from = from_ptr;
21 unsigned long fpregs[FP_FRAME_SIZE];
24 err = copy_from_user_proc(&sc, from, sizeof(sc));
25 err |= copy_from_user_proc(fpregs, sc.fpstate, sizeof(fpregs));
29 regs->skas.regs[GS] = sc.gs;
30 regs->skas.regs[FS] = sc.fs;
31 regs->skas.regs[ES] = sc.es;
32 regs->skas.regs[DS] = sc.ds;
33 regs->skas.regs[EDI] = sc.edi;
34 regs->skas.regs[ESI] = sc.esi;
35 regs->skas.regs[EBP] = sc.ebp;
36 regs->skas.regs[UESP] = sc.esp;
37 regs->skas.regs[EBX] = sc.ebx;
38 regs->skas.regs[EDX] = sc.edx;
39 regs->skas.regs[ECX] = sc.ecx;
40 regs->skas.regs[EAX] = sc.eax;
41 regs->skas.regs[EIP] = sc.eip;
42 regs->skas.regs[CS] = sc.cs;
43 regs->skas.regs[EFL] = sc.eflags;
44 regs->skas.regs[UESP] = sc.esp_at_signal;
45 regs->skas.regs[SS] = sc.ss;
46 regs->skas.fault_addr = sc.cr2;
47 regs->skas.fault_type = FAULT_WRITE(sc.err);
48 regs->skas.trap_type = sc.trapno;
50 err = ptrace(PTRACE_SETFPREGS, userspace_pid, 0, fpregs);
52 printk("copy_sc_to_user - PTRACE_SETFPREGS failed, "
53 "errno = %d\n", errno);
60 int copy_sc_to_user_skas(void *to_ptr, void *fp, union uml_pt_regs *regs,
61 unsigned long fault_addr, int fault_type)
63 struct sigcontext sc, *to = to_ptr;
64 struct _fpstate *to_fp;
65 unsigned long fpregs[FP_FRAME_SIZE];
68 sc.gs = regs->skas.regs[GS];
69 sc.fs = regs->skas.regs[FS];
70 sc.es = regs->skas.regs[ES];
71 sc.ds = regs->skas.regs[DS];
72 sc.edi = regs->skas.regs[EDI];
73 sc.esi = regs->skas.regs[ESI];
74 sc.ebp = regs->skas.regs[EBP];
75 sc.esp = regs->skas.regs[UESP];
76 sc.ebx = regs->skas.regs[EBX];
77 sc.edx = regs->skas.regs[EDX];
78 sc.ecx = regs->skas.regs[ECX];
79 sc.eax = regs->skas.regs[EAX];
80 sc.eip = regs->skas.regs[EIP];
81 sc.cs = regs->skas.regs[CS];
82 sc.eflags = regs->skas.regs[EFL];
83 sc.esp_at_signal = regs->skas.regs[UESP];
84 sc.ss = regs->skas.regs[SS];
86 sc.err = TO_SC_ERR(fault_type);
87 sc.trapno = regs->skas.trap_type;
89 err = ptrace(PTRACE_GETFPREGS, userspace_pid, 0, fpregs);
91 printk("copy_sc_to_user - PTRACE_GETFPREGS failed, "
92 "errno = %d\n", errno);
95 to_fp = (struct _fpstate *)
96 (fp ? (unsigned long) fp : ((unsigned long) to + sizeof(*to)));
102 return(copy_to_user_proc(to, &sc, sizeof(sc)) ||
103 copy_to_user_proc(to_fp, fpregs, sizeof(fpregs)));
107 * Overrides for Emacs so that we follow Linus's tabbing style.
108 * Emacs will notice this stuff at the end of the file and automatically
109 * adjust the settings for this buffer only. This must remain at the end
111 * ---------------------------------------------------------------------------
113 * c-file-style: "linux"