db/d44/linux-context_8h_source.html

00001 #ifndef _LINUX_CONTEXT_H
00002 #define _LINUX_CONTEXT_H
00003
00004 /* Signal handling functions */
00005
00006 #undef hwd_siginfo_t
00007
00008 /* Changed from struct siginfo due to POSIX and Fedora 18       */
00009 /* If this breaks anything then we need to add an aufoconf test */
00010 typedef siginfo_t hwd_siginfo_t;
00011
00012 #undef hwd_ucontext_t
00013 typedef ucontext_t hwd_ucontext_t;
00014
00015 #if defined(__ia64__)
00016 #define OVERFLOW_ADDRESS(ctx) ctx.ucontext->uc_mcontext.sc_ip
00017 #elif defined(__i386__)
00018 #define OVERFLOW_ADDRESS(ctx) ctx.ucontext->uc_mcontext.gregs[REG_EIP]
00019 #elif defined(__x86_64__)
00020 #define OVERFLOW_ADDRESS(ctx) ctx.ucontext->uc_mcontext.gregs[REG_RIP]
00021 #elif defined(__powerpc__) && !defined(__powerpc64__)
00022 /*
00023  * The index of the Next IP (REG_NIP) was obtained by looking at kernel
00024  * source code.  It wasn't documented anywhere else that I could find.
00025  */
00026 #define REG_NIP 32
00027 #define OVERFLOW_ADDRESS(ctx) ctx.ucontext->uc_mcontext.uc_regs->gregs[REG_NIP]
00028 #elif defined(__powerpc64__)
00029 #define OVERFLOW_ADDRESS(ctx) ctx.ucontext->uc_mcontext.regs->nip
00030 #elif defined(__sparc__)
00031 #define OVERFLOW_ADDRESS(ctx) ((struct sigcontext *)ctx.ucontext)->si_regs.pc
00032 #elif defined(__arm__)
00033 #define OVERFLOW_ADDRESS(ctx) ctx.ucontext->uc_mcontext.arm_pc
00034 #elif defined(__mips__)
00035 #define OVERFLOW_ADDRESS(ctx) ctx.ucontext->uc_mcontext.pc
00036 #else
00037 #error "OVERFLOW_ADDRESS() undefined!"
00038 #endif
00039
00040 #define GET_OVERFLOW_ADDRESS(ctx) (caddr_t)(OVERFLOW_ADDRESS(ctx))
00041
00042 #endif