relibc_compiler-builtins/thumbv7em-none-eabi.json

{
    "arch": "arm",
    "data-layout": "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64",
    "llvm-target": "thumbv7em-none-eabi",
    "os": "none",
    "target-endian": "little",
    "target-pointer-width": "32"
}