Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / openrisc / include / asm / ptrace.h

diff --git a/qemu/roms/u-boot/arch/openrisc/include/asm/ptrace.h b/qemu/roms/u-boot/arch/openrisc/include/asm/ptrace.h
new file mode 100644 (file)
index 0000000..6608d8a
--- /dev/null
+++ b/qemu/roms/u-boot/arch/openrisc/include/asm/ptrace.h
@@ -0,0 +1,128 @@
+/*
+ * OpenRISC Linux
+ *
+ * Linux architectural port borrowing liberally from similar works of
+ * others.  All original copyrights apply as per the original source
+ * declaration.
+ *
+ * OpenRISC implementation:
+ * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
+ * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
+ * et al.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef __ASM_OPENRISC_PTRACE_H
+#define __ASM_OPENRISC_PTRACE_H
+
+#include <asm/spr-defs.h>
+
+#ifndef __ASSEMBLY__
+/*
+ * This is the layout of the regset returned by the GETREGSET ptrace call
+ */
+struct user_regs_struct {
+       /* GPR R0-R31... */
+       unsigned long gpr[32];
+       unsigned long pc;
+       unsigned long sr;
+       unsigned long pad1;
+       unsigned long pad2;
+};
+#endif
+
+#ifdef __KERNEL__
+
+/*
+ * Make kernel PTrace/register structures opaque to userspace... userspace can
+ * access thread state via the regset mechanism.  This allows us a bit of
+ * flexibility in how we order the registers on the stack, permitting some
+ * optimizations like packing call-clobbered registers together so that
+ * they share a cacheline (not done yet, though... future optimization).
+ */
+
+#ifndef __ASSEMBLY__
+/*
+ * This struct describes how the registers are laid out on the kernel stack
+ * during a syscall or other kernel entry.
+ *
+ * This structure should always be cacheline aligned on the stack.
+ * FIXME: I don't think that's the case right now.  The alignment is
+ * taken care of elsewhere... head.S, process.c, etc.
+ */
+
+struct pt_regs {
+       union {
+               struct {
+                       /* Named registers */
+                       long  sr;       /* Stored in place of r0 */
+                       long  sp;       /* r1 */
+               };
+               struct {
+                       /* Old style */
+                       long offset[2];
+                       long gprs[30];
+               };
+               struct {
+                       /* New style */
+                       long gpr[32];
+               };
+       };
+       long  pc;
+       long  orig_gpr11;       /* For restarting system calls */
+       long  syscallno;        /* Syscall number (used by strace) */
+       long dummy;             /* Cheap alignment fix */
+};
+#endif /* __ASSEMBLY__ */
+
+/* TODO: Rename this to REDZONE because that's what it is */
+#define STACK_FRAME_OVERHEAD  128  /* size of minimum stack frame */
+
+#define instruction_pointer(regs)      ((regs)->pc)
+#define user_mode(regs)                        (((regs)->sr & SPR_SR_SM) == 0)
+#define user_stack_pointer(regs)       ((unsigned long)(regs)->sp)
+#define profile_pc(regs)               instruction_pointer(regs)
+
+/*
+ * Offsets used by 'ptrace' system call interface.
+ */
+#define PT_SR         0
+#define PT_SP         4
+#define PT_GPR2       8
+#define PT_GPR3       12
+#define PT_GPR4       16
+#define PT_GPR5       20
+#define PT_GPR6       24
+#define PT_GPR7       28
+#define PT_GPR8       32
+#define PT_GPR9       36
+#define PT_GPR10      40
+#define PT_GPR11      44
+#define PT_GPR12      48
+#define PT_GPR13      52
+#define PT_GPR14      56
+#define PT_GPR15      60
+#define PT_GPR16      64
+#define PT_GPR17      68
+#define PT_GPR18      72
+#define PT_GPR19      76
+#define PT_GPR20      80
+#define PT_GPR21      84
+#define PT_GPR22      88
+#define PT_GPR23      92
+#define PT_GPR24      96
+#define PT_GPR25      100
+#define PT_GPR26      104
+#define PT_GPR27      108
+#define PT_GPR28      112
+#define PT_GPR29      116
+#define PT_GPR30      120
+#define PT_GPR31      124
+#define PT_PC        128
+#define PT_ORIG_GPR11 132
+#define PT_SYSCALLNO  136
+
+#endif /* __KERNEL__ */
+
+#endif /* __ASM_OPENRISC_PTRACE_H */