Merge branches 'irq-urgent-for-linus', 'x86-urgent-for-linus' and 'sched-urgent-for...

[pandora-kernel.git] / arch / um / os-Linux / registers.c

diff --git a/arch/um/os-Linux/registers.c b/arch/um/os-Linux/registers.c
index 9dc3fad..b866b9e 100644 (file)
--- a/arch/um/os-Linux/registers.c
+++ b/arch/um/os-Linux/registers.c
@@ -1,54 +1,58 @@
 /*
  * Copyright (C) 2004 PathScale, Inc
+ * Copyright (C) 2004 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
  * Licensed under the GPL
  */
 
 #include <errno.h>
 #include <string.h>
 #include <sys/ptrace.h>
-#include "user.h"
 #include "sysdep/ptrace.h"
+#include "sysdep/ptrace_user.h"
+#include "registers.h"
 
-/* This is set once at boot time and not changed thereafter */
-
-static unsigned long exec_regs[MAX_REG_NR];
-
-void init_thread_registers(union uml_pt_regs *to)
-{
-       memcpy(to->skas.regs, exec_regs, sizeof(to->skas.regs));
-}
-
-void save_registers(int pid, union uml_pt_regs *regs)
+int save_registers(int pid, struct uml_pt_regs *regs)
 {
        int err;
 
-       err = ptrace(PTRACE_GETREGS, pid, 0, regs->skas.regs);
-       if(err < 0)
-               panic("save_registers - saving registers failed, errno = %d\n",
-                     errno);
+       err = ptrace(PTRACE_GETREGS, pid, 0, regs->gp);
+       if (err < 0)
+               return -errno;
+       return 0;
 }
 
-void restore_registers(int pid, union uml_pt_regs *regs)
+int restore_registers(int pid, struct uml_pt_regs *regs)
 {
        int err;
 
-       err = ptrace(PTRACE_SETREGS, pid, 0, regs->skas.regs);
-       if(err < 0)
-               panic("restore_registers - saving registers failed, "
-                     "errno = %d\n", errno);
+       err = ptrace(PTRACE_SETREGS, pid, 0, regs->gp);
+       if (err < 0)
+               return -errno;
+       return 0;
 }
 
-void init_registers(int pid)
+/* This is set once at boot time and not changed thereafter */
+
+static unsigned long exec_regs[MAX_REG_NR];
+static unsigned long exec_fp_regs[FP_SIZE];
+
+int init_registers(int pid)
 {
        int err;
 
        err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs);
-       if(err)
-               panic("check_ptrace : PTRACE_GETREGS failed, errno = %d",
-                     errno);
+       if (err < 0)
+               return -errno;
+
+       arch_init_registers(pid);
+       get_fp_registers(pid, exec_fp_regs);
+       return 0;
 }
 
-void get_safe_registers(unsigned long *regs)
+void get_safe_registers(unsigned long *regs, unsigned long *fp_regs)
 {
        memcpy(regs, exec_regs, sizeof(exec_regs));
+
+       if (fp_regs)
+               memcpy(fp_regs, exec_fp_regs, sizeof(exec_fp_regs));
 }