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-rw-r--r--ports/sysdeps/aarch64/fpu/fpu_control.h3
-rw-r--r--ports/sysdeps/aarch64/soft-fp/sfp-machine.h2
2 files changed, 4 insertions, 1 deletions
diff --git a/ports/sysdeps/aarch64/fpu/fpu_control.h b/ports/sysdeps/aarch64/fpu/fpu_control.h
index 79ab5fb95d..6a265e89b5 100644
--- a/ports/sysdeps/aarch64/fpu/fpu_control.h
+++ b/ports/sysdeps/aarch64/fpu/fpu_control.h
@@ -59,6 +59,9 @@
                    E E D D
                        E E
  */
+
+#define _FPU_FPCR_RM_MASK  0xc00000
+
 #define _FPU_FPCR_MASK_IXE 0x1000
 #define _FPU_FPCR_MASK_UFE 0x0800
 #define _FPU_FPCR_MASK_OFE 0x0400
diff --git a/ports/sysdeps/aarch64/soft-fp/sfp-machine.h b/ports/sysdeps/aarch64/soft-fp/sfp-machine.h
index d21d00a934..9bb94e5ccc 100644
--- a/ports/sysdeps/aarch64/soft-fp/sfp-machine.h
+++ b/ports/sysdeps/aarch64/soft-fp/sfp-machine.h
@@ -47,7 +47,7 @@
 
 #define _FP_DECL_EX		fpu_control_t _fcw
 
-#define FP_ROUNDMODE		(_fcw & 0x3)
+#define FP_ROUNDMODE		(_fcw & _FPU_FPCR_RM_MASK)
 
 #define FP_RND_NEAREST		FE_TONEAREST
 #define FP_RND_ZERO		FE_TOWARDZERO