x86_64-ucontext.h

memory test check for embeded linux

/*
 * This header is culled from various kernel headers for x86_64.
 * Glibc and the kernel don't agree on the layout for ucontext_t.
 */
#ifndef X86_64_UCONTEXT_H
#define X86_64_UCONTEXT_H

typedef unsigned long my_sigset_t;
typedef struct my_sigaltstack {
        void *ss_sp;
        int ss_flags;
        size_t ss_size;
} my_stack_t;

typedef unsigned short my___u16;
typedef unsigned int my___u32;
typedef unsigned long long my___u64;

struct my__fpstate {
        my___u16   cwd;
        my___u16   swd;
        my___u16   twd;    /* Note this is not the same as the 32bit/x87/FSAVE twd */
        my___u16   fop;
        my___u64   rip;
        my___u64   rdp;
        my___u32   mxcsr;
        my___u32   mxcsr_mask;
        my___u32   st_space[32];   /* 8*16 bytes for each FP-reg */
        my___u32   xmm_space[64];  /* 16*16 bytes for each XMM-reg  */
        my___u32   reserved2[24];
};

struct my_sigcontext {
        unsigned long r8;
        unsigned long r9;
        unsigned long r10;
        unsigned long r11;
        unsigned long r12;
        unsigned long r13;
        unsigned long r14;
        unsigned long r15;
        unsigned long rdi;
        unsigned long rsi;
        unsigned long rbp;
        unsigned long rbx;
        unsigned long rdx;
        unsigned long rax;
        unsigned long rcx;
        unsigned long rsp;
        unsigned long rip;
        unsigned long eflags;           /* RFLAGS */
        unsigned short cs;
        unsigned short gs;
        unsigned short fs;
        unsigned short __pad0;
        unsigned long err;
        unsigned long trapno;
        unsigned long oldmask;
        unsigned long cr2;
        struct my__fpstate *fpstate;       /* zero when no FPU context */
        unsigned long reserved1[8];
};

struct my_ucontext;
struct my_ucontext {
        unsigned long        uc_flags;
        struct my_ucontext  *uc_link;
        my_stack_t           uc_stack;
        struct my_sigcontext uc_mcontext;
        my_sigset_t          uc_sigmask;   /* mask last for extensibility */
};

typedef struct my_ucontext my_ucontext_t;

#define ucontext_t my_ucontext_t

#endif /* X86_64_UCONTEXT_H */