root/src/pkg/runtime/defs_plan9_amd64.h

#define PAGESIZE 0x200000ULL

typedef struct Ureg Ureg;

struct Ureg {
        uint64  ax;
        uint64  bx;
        uint64  cx;
        uint64  dx;
        uint64  si;
        uint64  di;
        uint64  bp;
        uint64  r8;
        uint64  r9;
        uint64  r10;
        uint64  r11;
        uint64  r12;
        uint64  r13;
        uint64  r14;
        uint64  r15;

        uint16  ds;
        uint16  es;
        uint16  fs;
        uint16  gs;

        uint64  type;
        uint64  error;                          /* error code (or zero) */
        uint64  ip;                             /* pc */
        uint64  cs;                             /* old context */
        uint64  flags;                          /* old flags */
        uint64  sp;                             /* sp */
        uint64  ss;                             /* old stack segment */
};