musl/arch/i386/bits/user.h

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#undef __WORDSIZE
#define __WORDSIZE 32
struct user_fpregs_struct
{
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long cwd, swd, twd, fip, fcs, foo, fos, st_space[20];
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};
struct user_fpxregs_struct
{
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unsigned short cwd, swd, twd, fop;
long fip, fcs, foo, fos, mxcsr, reserved;
long st_space[32], xmm_space[32], padding[56];
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};
struct user_regs_struct
{
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long ebx, ecx, edx, esi, edi, ebp, eax, xds, xes, xfs, xgs;
long orig_eax, eip, xcs, eflags, esp, xss;
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};
struct user
{
struct user_regs_struct regs;
int u_fpvalid;
struct user_fpregs_struct i387;
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unsigned long u_tsize;
unsigned long u_dsize;
unsigned long u_ssize;
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unsigned long start_code;
unsigned long start_stack;
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long signal;
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int reserved;
struct user_regs_struct *u_ar0;
struct user_fpregs_struct *u_fpstate;
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unsigned long magic;
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char u_comm[32];
int u_debugreg[8];
};
#define PAGE_MASK (~(PAGE_SIZE-1))
#define NBPG PAGE_SIZE
#define UPAGES 1
#define HOST_TEXT_START_ADDR (u.start_code)
#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)