github.com/afumu/libc@v0.0.6/musl/arch/i386/bits/user.h (about)

     1  #undef __WORDSIZE
     2  #define __WORDSIZE 32
     3  
     4  typedef struct user_fpregs_struct {
     5  	long cwd, swd, twd, fip, fcs, foo, fos, st_space[20];
     6  } elf_fpregset_t;
     7  
     8  typedef struct user_fpxregs_struct {
     9  	unsigned short cwd, swd, twd, fop;
    10  	long fip, fcs, foo, fos, mxcsr, reserved;
    11  	long st_space[32], xmm_space[32], padding[56];
    12  } elf_fpxregset_t;
    13  
    14  struct user_regs_struct {
    15  	long ebx, ecx, edx, esi, edi, ebp, eax, xds, xes, xfs, xgs;
    16  	long orig_eax, eip, xcs, eflags, esp, xss;
    17  };
    18  
    19  #define ELF_NGREG 17
    20  typedef unsigned long elf_greg_t, elf_gregset_t[ELF_NGREG];
    21  
    22  struct user {
    23  	struct user_regs_struct		regs;
    24  	int				u_fpvalid;
    25  	struct user_fpregs_struct	i387;
    26  	unsigned long			u_tsize;
    27  	unsigned long			u_dsize;
    28  	unsigned long			u_ssize;
    29  	unsigned long			start_code;
    30  	unsigned long			start_stack;
    31  	long				signal;
    32  	int				reserved;
    33  	struct user_regs_struct		*u_ar0;
    34  	struct user_fpregs_struct	*u_fpstate;
    35  	unsigned long			magic;
    36  	char				u_comm[32];
    37  	int				u_debugreg[8];
    38  };
    39  
    40  #define PAGE_MASK		(~(PAGESIZE-1))
    41  #define NBPG			PAGESIZE
    42  #define UPAGES			1
    43  #define HOST_TEXT_START_ADDR	(u.start_code)
    44  #define HOST_STACK_END_ADDR	(u.start_stack + u.u_ssize * NBPG)