PAL.C.T MINI SHELL
/* -*- linux-c -*-
*
* s390x dwarf unwinder header file
* Copyright (C) 2011 Red Hat, Inc.
*
* This file is part of systemtap, and is free software. You can
* redistribute it and/or modify it under the terms of the GNU General
* Public License (GPL); either version 2, or (at your option) any
* later version.
*/
#ifndef _STP_S390X_UNWIND_H
#define _STP_S390X_UNWIND_H
#include <linux/sched.h>
#include <asm/ptrace.h>
#define _stp_get_unaligned(ptr) (*(ptr))
#define UNW_PC(frame) (frame)->regs.psw.addr
#define UNW_SP(frame) (frame)->regs.gprs[15]
#define STACK_LIMIT(ptr) (((ptr) - 1) & ~(THREAD_SIZE - 1))
#define UNW_REGISTER_INFO \
PTREGS_INFO(gprs[0]), \
PTREGS_INFO(gprs[1]), \
PTREGS_INFO(gprs[2]), \
PTREGS_INFO(gprs[3]), \
PTREGS_INFO(gprs[4]), \
PTREGS_INFO(gprs[5]), \
PTREGS_INFO(gprs[6]), \
PTREGS_INFO(gprs[7]), \
PTREGS_INFO(gprs[8]), \
PTREGS_INFO(gprs[9]), \
PTREGS_INFO(gprs[10]), \
PTREGS_INFO(gprs[11]), \
PTREGS_INFO(gprs[12]), \
PTREGS_INFO(gprs[13]), \
PTREGS_INFO(gprs[14]), \
PTREGS_INFO(gprs[15]), \
PTREGS_INFO(psw.addr), \
PTREGS_INFO(psw.mask)
#define DWARF_REG_MAP(r) \
((r >= 0 && r <= 15) ? r /* gpr0-15 */ \
: (r == 64) ? 16 /* PSW addr */ \
: (r == 65) ? 17 /* PSW mask */ \
: 9999)
#define UNW_PC_IDX 16
#define UNW_SP_IDX 15
#define UNW_SP_FROM_CFA 0 /* Stack pointer is just gprs15, normal cfi. */
static inline void arch_unw_init_frame_info(struct unwind_frame_info *info,
/*const*/ struct pt_regs *regs,
int sanitize)
{
if (&info->regs == regs) { /* happens when unwinding kernel->user */
info->call_frame = 1;
return;
}
memset(info, 0, sizeof(*info));
/* XXX handle sanitize??? */
info->regs = *regs;
}
#endif /* _STP_S390X_UNWIND_H */
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