sh: add freestanding bits

arch/sh/freestanding/bits.h

@@ -0,0 +1,29 @@
+#ifndef LIBUCONTEXT_BITS_H
+#define LIBUCONTEXT_BITS_H
+
+typedef unsigned long libucontext_greg_t, libucontext_gregset_t[16];
+typedef unsigned long libucontext_freg_t, libucontext_fpregset_t[16];
+typedef struct sigcontext {
+	unsigned long oldmask;
+	unsigned long gregs[16];
+	unsigned long pc, pr, sr;
+	unsigned long gbr, mach, macl;
+	unsigned long fpregs[16];
+	unsigned long xfpregs[16];
+	unsigned int fpscr, fpul, ownedfp;
+} libucontext_mcontext_t;
+
+typedef struct {
+	void *ss_sp;
+	int ss_flags;
+	size_t ss_size;
+} libucontext_stack_t;
+
+typedef struct libucontext_ucontext {
+	unsigned long uc_flags;
+	struct libucontext_ucontext *uc_link;
+	libucontext_stack_t uc_stack;
+	libucontext_mcontext_t uc_mcontext;
+} libucontext_ucontext_t;
+
+#endif