diff --git a/lib/libc/include/riscv32-linux-musl/bits/fenv.h b/lib/libc/include/riscv32-linux-musl/bits/fenv.h
index b260c6f63b..2c126e6bab 100644
--- a/lib/libc/include/riscv32-linux-musl/bits/fenv.h
+++ b/lib/libc/include/riscv32-linux-musl/bits/fenv.h
@@ -1,3 +1,7 @@
+#ifdef __riscv_float_abi_soft
+#define FE_ALL_EXCEPT   0
+#define FE_TONEAREST    0
+#else
 #define FE_INVALID      16
 #define FE_DIVBYZERO    8
 #define FE_OVERFLOW     4
@@ -10,8 +14,9 @@
 #define FE_DOWNWARD     2
 #define FE_UPWARD       3
 #define FE_TOWARDZERO   1
+#endif
 
 typedef unsigned int fexcept_t;
 typedef unsigned int fenv_t;
 
-#define FE_DFL_ENV      ((const fenv_t *) -1)
\ No newline at end of file
+#define FE_DFL_ENV      ((const fenv_t *) -1)
diff --git a/lib/libc/include/riscv64-linux-musl/bits/fenv.h b/lib/libc/include/riscv64-linux-musl/bits/fenv.h
index b260c6f63b..2c126e6bab 100644
--- a/lib/libc/include/riscv64-linux-musl/bits/fenv.h
+++ b/lib/libc/include/riscv64-linux-musl/bits/fenv.h
@@ -1,3 +1,7 @@
+#ifdef __riscv_float_abi_soft
+#define FE_ALL_EXCEPT   0
+#define FE_TONEAREST    0
+#else
 #define FE_INVALID      16
 #define FE_DIVBYZERO    8
 #define FE_OVERFLOW     4
@@ -10,8 +14,9 @@
 #define FE_DOWNWARD     2
 #define FE_UPWARD       3
 #define FE_TOWARDZERO   1
+#endif
 
 typedef unsigned int fexcept_t;
 typedef unsigned int fenv_t;
 
-#define FE_DFL_ENV      ((const fenv_t *) -1)
\ No newline at end of file
+#define FE_DFL_ENV      ((const fenv_t *) -1)