#ifndef _LINUX_CONTEXT_H

#define _LINUX_CONTEXT_H

/* Signal handling functions */

#undef hwd_siginfo_t

/* Changed from struct siginfo due to POSIX and Fedora 18       */

/* If this breaks anything then we need to add an aufoconf test */

typedef siginfo_t hwd_siginfo_t;

#undef hwd_ucontext_t

typedef ucontext_t hwd_ucontext_t;

#if defined(__ia64__)

#define OVERFLOW_ADDRESS(ctx) ctx.ucontext->uc_mcontext.sc_ip

#elif defined(__i386__)

#define OVERFLOW_ADDRESS(ctx) ctx.ucontext->uc_mcontext.gregs[REG_EIP]

#elif defined(__x86_64__)

#define OVERFLOW_ADDRESS(ctx) ctx.ucontext->uc_mcontext.gregs[REG_RIP]

#elif defined(__powerpc__) && !defined(__powerpc64__)

/*

 * The index of the Next IP (REG_NIP) was obtained by looking at kernel

 * source code.  It wasn't documented anywhere else that I could find.

 */

#define REG_NIP 32

#define OVERFLOW_ADDRESS(ctx) ctx.ucontext->uc_mcontext.uc_regs->gregs[REG_NIP]

#elif defined(__powerpc64__)

#define OVERFLOW_ADDRESS(ctx) ctx.ucontext->uc_mcontext.regs->nip

#elif defined(__sparc__)

#define OVERFLOW_ADDRESS(ctx) ((struct sigcontext *)ctx.ucontext)->si_regs.pc

#elif defined(__arm__)

#define OVERFLOW_ADDRESS(ctx) ctx.ucontext->uc_mcontext.arm_pc

#elif defined(__aarch64__)

#define OVERFLOW_ADDRESS(ctx) ctx.ucontext->uc_mcontext.pc

#elif defined(__mips__)

#define OVERFLOW_ADDRESS(ctx) ctx.ucontext->uc_mcontext.pc

#else

#error "OVERFLOW_ADDRESS() undefined!"

#endif

#define GET_OVERFLOW_ADDRESS(ctx) (caddr_t)(OVERFLOW_ADDRESS(ctx))

#endif