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

fusl/src/internal/dynlink.h

+#ifndef _INTERNAL_RELOC_H
+#define _INTERNAL_RELOC_H
+
+#include <features.h>
+#include <elf.h>
+#include <stdint.h>
+
+#if UINTPTR_MAX == 0xffffffff
+typedef Elf32_Ehdr Ehdr;
+typedef Elf32_Phdr Phdr;
+typedef Elf32_Sym Sym;
+#define R_TYPE(x) ((x)&255)
+#define R_SYM(x) ((x)>>8)
+#else
+typedef Elf64_Ehdr Ehdr;
+typedef Elf64_Phdr Phdr;
+typedef Elf64_Sym Sym;
+#define R_TYPE(x) ((x)&0x7fffffff)
+#define R_SYM(x) ((x)>>32)
+#endif
+
+/* These enum constants provide unmatchable default values for
+ * any relocation type the arch does not use. */
+enum {
+        REL_NONE = 0,
+        REL_SYMBOLIC = -100,
+        REL_GOT,
+        REL_PLT,
+        REL_RELATIVE,
+        REL_OFFSET,
+        REL_OFFSET32,
+        REL_COPY,
+        REL_SYM_OR_REL,
+        REL_DTPMOD,
+        REL_DTPOFF,
+        REL_TPOFF,
+        REL_TPOFF_NEG,
+        REL_TLSDESC,
+        REL_FUNCDESC,
+        REL_FUNCDESC_VAL,
+};
+
+struct fdpic_loadseg {
+        uintptr_t addr, p_vaddr, p_memsz;
+};
+
+struct fdpic_loadmap {
+        unsigned short version, nsegs;
+        struct fdpic_loadseg segs[];
+};
+
+struct fdpic_dummy_loadmap {
+        unsigned short version, nsegs;
+        struct fdpic_loadseg segs[1];
+};
+
+#include "reloc.h"
+
+#ifndef FDPIC_CONSTDISP_FLAG
+#define FDPIC_CONSTDISP_FLAG 0
+#endif
+
+#ifndef DL_FDPIC
+#define DL_FDPIC 0
+#endif
+
+#ifndef DL_NOMMU_SUPPORT
+#define DL_NOMMU_SUPPORT 0
+#endif
+
+#if !DL_FDPIC
+#define IS_RELATIVE(x,s) ( \
+        (R_TYPE(x) == REL_RELATIVE) || \
+        (R_TYPE(x) == REL_SYM_OR_REL && !R_SYM(x)) )
+#else
+#define IS_RELATIVE(x,s) ( ( \
+        (R_TYPE(x) == REL_FUNCDESC_VAL) || \
+        (R_TYPE(x) == REL_SYMBOLIC) ) \
+        && (((s)[R_SYM(x)].st_info & 0xf) == STT_SECTION) )
+#endif
+
+#ifndef NEED_MIPS_GOT_RELOCS
+#define NEED_MIPS_GOT_RELOCS 0
+#endif
+
+#define AUX_CNT 32
+#define DYN_CNT 32
+
+typedef void (*stage2_func)(unsigned char *, size_t *);
+typedef _Noreturn void (*stage3_func)(size_t *);
+
+#endif