This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / arch / um / sys-x86_64 / ptrace.c

diff --git a/arch/um/sys-x86_64/ptrace.c b/arch/um/sys-x86_64/ptrace.c
new file mode 100644 (file)
index 0000000..8c146b2
--- /dev/null
+++ b/arch/um/sys-x86_64/ptrace.c
@@ -0,0 +1,138 @@
+/*
+ * Copyright 2003 PathScale, Inc.
+ *
+ * Licensed under the GPL
+ */
+
+#define __FRAME_OFFSETS
+#include "asm/ptrace.h"
+#include "linux/sched.h"
+#include "linux/errno.h"
+#include "asm/elf.h"
+
+/* XXX x86_64 */
+unsigned long not_ss;
+unsigned long not_ds;
+unsigned long not_es;
+
+#define SC_SS(r) (not_ss)
+#define SC_DS(r) (not_ds)
+#define SC_ES(r) (not_es)
+
+/* determines which flags the user has access to. */
+/* 1 = access 0 = no access */
+#define FLAG_MASK 0x44dd5UL
+
+int putreg(struct task_struct *child, int regno, unsigned long value)
+{
+       unsigned long tmp;
+
+#ifdef TIF_IA32
+       /* Some code in the 64bit emulation may not be 64bit clean.
+          Don't take any chances. */
+       if (test_tsk_thread_flag(child, TIF_IA32))
+               value &= 0xffffffff;
+#endif
+       switch (regno){
+       case FS:
+       case GS:
+       case DS:
+       case ES:
+       case SS:
+       case CS:
+               if (value && (value & 3) != 3)
+                       return -EIO;
+               value &= 0xffff;
+               break;
+
+       case FS_BASE:
+       case GS_BASE:
+               if (!((value >> 48) == 0 || (value >> 48) == 0xffff))
+                       return -EIO;
+               break;
+
+       case EFLAGS:
+               value &= FLAG_MASK;
+               tmp = PT_REGS_EFLAGS(&child->thread.regs) & ~FLAG_MASK;
+               value |= tmp;
+               break;
+       }
+
+       PT_REGS_SET(&child->thread.regs, regno, value);
+       return 0;
+}
+
+unsigned long getreg(struct task_struct *child, int regno)
+{
+       unsigned long retval = ~0UL;
+       switch (regno) {
+       case FS:
+       case GS:
+       case DS:
+       case ES:
+       case SS:
+       case CS:
+               retval = 0xffff;
+               /* fall through */
+       default:
+               retval &= PT_REG(&child->thread.regs, regno);
+#ifdef TIF_IA32
+               if (test_tsk_thread_flag(child, TIF_IA32))
+                       retval &= 0xffffffff;
+#endif
+       }
+       return retval;
+}
+
+void arch_switch(void)
+{
+/* XXX
+       printk("arch_switch\n");
+*/
+}
+
+int is_syscall(unsigned long addr)
+{
+       panic("is_syscall");
+}
+
+int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu )
+{
+       panic("dump_fpu");
+       return(1);
+}
+
+int get_fpregs(unsigned long buf, struct task_struct *child)
+{
+       panic("get_fpregs");
+       return(0);
+}
+
+int set_fpregs(unsigned long buf, struct task_struct *child)
+{
+       panic("set_fpregs");
+       return(0);
+}
+
+int get_fpxregs(unsigned long buf, struct task_struct *tsk)
+{
+       panic("get_fpxregs");
+       return(0);
+}
+
+int set_fpxregs(unsigned long buf, struct task_struct *tsk)
+{
+       panic("set_fxpregs");
+       return(0);
+}
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ */