In order to be able to build linux-zero on SuperH (both big- and little-endian), it needs to be added to arch_array in src/os/linux/vm/os_linux.cpp:

diff -r 9ad65a522a1f src/os/linux/vm/os_linux.cpp
--- a/src/os/linux/vm/os_linux.cpp Wed Aug 23 11:14:40 2017 +0200
+++ b/src/os/linux/vm/os_linux.cpp Thu Aug 24 10:32:31 2017 +0200
@@ -1748,8 +1748,10 @@
     {EM_PPC, EM_PPC, ELFCLASS32, ELFDATA2MSB, (char*)"Power PC 32"},
 #if defined(VM_LITTLE_ENDIAN)
     {EM_PPC64, EM_PPC64, ELFCLASS64, ELFDATA2LSB, (char*)"Power PC 64 LE"},
+ {EM_SH, EM_SH, ELFCLASS32, ELFDATA2LSB, (char*)"SuperH"},
 #else
     {EM_PPC64, EM_PPC64, ELFCLASS64, ELFDATA2MSB, (char*)"Power PC 64"},
+ {EM_SH, EM_SH, ELFCLASS32, ELFDATA2MSB, (char*)"SuperH BE"},
 #endif
     {EM_ARM, EM_ARM, ELFCLASS32, ELFDATA2LSB, (char*)"ARM"},
     {EM_S390, EM_S390, ELFCLASSNONE, ELFDATA2MSB, (char*)"IBM System/390"},
@@ -1791,9 +1793,11 @@
   static Elf32_Half running_arch_code=EM_MIPS;
 #elif (defined M68K)
   static Elf32_Half running_arch_code=EM_68K;
+#elif (defined SH)
+ static Elf32_Half running_arch_code=EM_SH;
 #else
     #error Method os::dll_load requires that one of following is defined:\
- AARCH64, ALPHA, ARM, AMD64, IA32, IA64, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, S390, __sparc
+ AARCH64, ALPHA, ARM, AMD64, IA32, IA64, M68K, MIPS, MIPSEL, PARISC, __powerpc__, __powerpc64__, S390, SH, __sparc
 #endif
 
   // Identify compatability class for VM's architecture and library's architecture