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

fusl/arch/sh/crt_arch.h

Index: fusl/arch/sh/crt_arch.h
diff --git a/fusl/arch/sh/crt_arch.h b/fusl/arch/sh/crt_arch.h
new file mode 100644
index 0000000000000000000000000000000000000000..f341c8fbc096819d69333590bad906653df32ff2
--- /dev/null
+++ b/fusl/arch/sh/crt_arch.h
@@ -0,0 +1,78 @@
+#ifdef __SH_FDPIC__
+
+__asm__(
+".text \n"
+".global " START " \n"
+START ": \n"
+"	tst r8, r8 \n"
+"	bf 1f \n"
+"	mov #68, r3 \n"
+"	add r3, r3 \n"
+"	mov #8, r4 \n"
+"	swap.w r4, r4 \n"
+"	trapa #31 \n"
+"	nop \n"
+"	nop \n"
+"	nop \n"
+"	nop \n"
+"1:	nop \n"
+#ifndef SHARED
+"	mov r8, r4 \n"
+"	mova 1f, r0 \n"
+"	mov.l 1f, r5 \n"
+"	mov.l 1f+4, r6 \n"
+"	add r0, r5 \n"
+"	mov.l 4f, r1 \n"
+"5:	bsrf r1 \n"
+"	 add r0, r6 \n"
+"	mov r0, r12 \n"
+#endif
+"	mov r10, r5 \n"
+"	mov r15, r4 \n"
+"	mov.l r9, @-r15 \n"
+"	mov.l r8, @-r15 \n"
+"	mov #-16, r0 \n"
+"	mov.l 2f, r1 \n"
+"3:	bsrf r1 \n"
+"	 and r0, r15 \n"
+".align 2 \n"
+"1:	.long __ROFIXUP_LIST__@PCREL \n"
+"	.long __ROFIXUP_END__@PCREL + 4 \n"
+"2:	.long " START "_c@PCREL - (3b+4-.) \n"
+#ifndef SHARED
+"4:	.long __fdpic_fixup@PCREL - (5b+4-.) \n"
+#endif
+);
+
+#ifndef SHARED
+#include "fdpic_crt.h"
+#endif
+
+#else
+
+__asm__(
+".text \n"
+".global " START " \n"
+START ": \n"
+"	mova 1f, r0 \n"
+"	mov.l 1f, r5 \n"
+"	add r0, r5 \n"
+"	mov r15, r4 \n"
+"	mov #-16, r0 \n"
+"	mov.l 2f, r1 \n"
+"3:	bsrf r1 \n"
+"	 and r0, r15 \n"
+".align 2 \n"
+".weak _DYNAMIC \n"
+".hidden _DYNAMIC \n"
+"1:	.long _DYNAMIC-. \n"
+"2:	.long " START "_c@PCREL - (3b+4-.) \n"
+);
+
+#endif
+
+/* used by gcc for switching the FPU between single and double precision */
+#ifdef SHARED
+__attribute__((__visibility__("hidden")))
+#endif
+const unsigned long __fpscr_values[2] = { 0, 0x80000 };