Add a "fork" of musl as //fusl.

fusl/arch/i386/bits/user.h

Index: fusl/arch/i386/bits/user.h
diff --git a/fusl/arch/i386/bits/user.h b/fusl/arch/i386/bits/user.h
new file mode 100644
index 0000000000000000000000000000000000000000..fa623621eeba35e84dedc74c7dc6c768f2e8118a
--- /dev/null
+++ b/fusl/arch/i386/bits/user.h
@@ -0,0 +1,48 @@
+#undef __WORDSIZE
+#define __WORDSIZE 32
+
+typedef struct user_fpregs_struct
+{
+	long cwd, swd, twd, fip, fcs, foo, fos, st_space[20];
+} elf_fpregset_t;
+
+typedef struct user_fpxregs_struct
+{
+	unsigned short cwd, swd, twd, fop;
+	long fip, fcs, foo, fos, mxcsr, reserved;
+	long st_space[32], xmm_space[32], padding[56];
+} elf_fpxregset_t;
+
+struct user_regs_struct
+{
+	long ebx, ecx, edx, esi, edi, ebp, eax, xds, xes, xfs, xgs;
+	long orig_eax, eip, xcs, eflags, esp, xss;
+};
+
+#define ELF_NGREG 17
+typedef unsigned long elf_greg_t, elf_gregset_t[ELF_NGREG];
+
+struct user
+{
+	struct user_regs_struct		regs;
+	int				u_fpvalid;
+	struct user_fpregs_struct	i387;
+	unsigned long			u_tsize;
+	unsigned long			u_dsize;
+	unsigned long			u_ssize;
+	unsigned long			start_code;
+	unsigned long			start_stack;
+	long				signal;
+	int				reserved;
+	struct user_regs_struct		*u_ar0;
+	struct user_fpregs_struct	*u_fpstate;
+	unsigned long			magic;
+	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)