/*
 *  x86_64 signal definitions
 *
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, see <http://www.gnu.org/licenses/>.
 */
#ifndef _TARGET_ARCH_SIGNAL_H_
#define _TARGET_ARCH_SIGNAL_H_

#include "cpu.h"

/* Size of the signal trampolin code placed on the stack. */
#define TARGET_SZSIGCODE    0

/* compare to  x86/include/_limits.h */
#define TARGET_MINSIGSTKSZ  (512 * 4)               /* min sig stack size */
#define TARGET_SIGSTKSZ     (MINSIGSTKSZ + 32768)   /* recommended size */

#define TARGET_MC_GET_CLEAR_RET 0x0001

struct target_sigcontext {
    /* to be added */
};

typedef struct target_mcontext {
} target_mcontext_t;

typedef struct target_ucontext {
    target_sigset_t   uc_sigmask;
    target_mcontext_t uc_mcontext;
    abi_ulong         uc_link;
    target_stack_t    uc_stack;
    int32_t           uc_flags;
    int32_t         __spare__[4];
} target_ucontext_t;

struct target_sigframe {
    abi_ulong   sf_signum;
    abi_ulong   sf_siginfo;    /* code or pointer to sf_si */
    abi_ulong   sf_ucontext;   /* points to sf_uc */
    abi_ulong   sf_addr;       /* undocumented 4th arg */
    target_ucontext_t   sf_uc; /* = *sf_uncontext */
    target_siginfo_t    sf_si; /* = *sf_siginfo (SA_SIGINFO case)*/
    uint32_t    __spare__[2];
};

/*
 * Compare to amd64/amd64/machdep.c sendsig()
 * Assumes that target stack frame memory is locked.
 */
static inline abi_long set_sigtramp_args(CPUX86State *regs,
        int sig, struct target_sigframe *frame, abi_ulong frame_addr,
        struct target_sigaction *ka)
{
    /* XXX return -TARGET_EOPNOTSUPP; */
    return 0;
}

/* Compare to amd64/amd64/machdep.c get_mcontext() */
static inline abi_long get_mcontext(CPUX86State *regs,
                target_mcontext_t *mcp, int flags)
{
    /* XXX */
    return -TARGET_EOPNOTSUPP;
}

/* Compare to amd64/amd64/machdep.c set_mcontext() */
static inline abi_long set_mcontext(CPUX86State *regs,
        target_mcontext_t *mcp, int srflag)
{
    /* XXX */
    return -TARGET_EOPNOTSUPP;
}

static inline abi_long get_ucontext_sigreturn(CPUX86State *regs,
        abi_ulong target_sf, abi_ulong *target_uc)
{
    /* XXX */
    *target_uc = 0;
    return -TARGET_EOPNOTSUPP;
}

#endif /* !TARGET_ARCH_SIGNAL_H_ */