From 8039c6cacb5f4627b6085cda1e5c8db8ef70b9d6 Mon Sep 17 00:00:00 2001
From: Andrew Waterman <andrew@sifive.com>
Date: Sun, 13 Nov 2016 17:52:34 -0800
Subject: For RV32, mmap offset is in 4 KiB increments

---
 pk/syscall.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/pk/syscall.c b/pk/syscall.c
index c5f650c..e6b2454 100644
--- a/pk/syscall.c
+++ b/pk/syscall.c
@@ -320,8 +320,12 @@ int sys_getuid()
 
 uintptr_t sys_mmap(uintptr_t addr, size_t length, int prot, int flags, int fd, off_t offset)
 {
-  uintptr_t ret =  do_mmap(addr, length, prot, flags, fd, offset);
-  return ret;
+#ifdef __riscv32
+  if (offset != (offset << 12 >> 12))
+    return -ENXIO;
+  offset <<= 12;
+#endif
+  return do_mmap(addr, length, prot, flags, fd, offset);
 }
 
 int sys_munmap(uintptr_t addr, size_t length)
-- 
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