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-rw-r--r--src/internal/syscall.h4
-rw-r--r--src/mman/mmap.c5
2 files changed, 7 insertions, 2 deletions
diff --git a/src/internal/syscall.h b/src/internal/syscall.h
index 0a2840ad..bb96c26e 100644
--- a/src/internal/syscall.h
+++ b/src/internal/syscall.h
@@ -8,6 +8,10 @@
#define SYSCALL_RLIM_INFINITY (~0ULL)
#endif
+#ifndef SYSCALL_MMAP2_UNIT
+#define SYSCALL_MMAP2_UNIT 4096ULL
+#endif
+
#ifndef __scc
#define __scc(X) ((long) (X))
typedef long syscall_arg_t;
diff --git a/src/mman/mmap.c b/src/mman/mmap.c
index b56cff86..1917a540 100644
--- a/src/mman/mmap.c
+++ b/src/mman/mmap.c
@@ -11,7 +11,8 @@ static void dummy0(void) { }
weak_alias(dummy1, __vm_lock);
weak_alias(dummy0, __vm_unlock);
-#define OFF_MASK ((-0x2000ULL << (8*sizeof(long)-1)) | 0xfff)
+#define UNIT SYSCALL_MMAP2_UNIT
+#define OFF_MASK ((-0x2000ULL << (8*sizeof(long)-1)) | (UNIT-1))
void *__mmap(void *start, size_t len, int prot, int flags, int fd, off_t off)
{
@@ -27,7 +28,7 @@ void *__mmap(void *start, size_t len, int prot, int flags, int fd, off_t off)
}
if (flags & MAP_FIXED) __vm_lock(-1);
#ifdef SYS_mmap2
- ret = (void *)syscall(SYS_mmap2, start, len, prot, flags, fd, off>>12);
+ ret = (void *)syscall(SYS_mmap2, start, len, prot, flags, fd, off/UNIT);
#else
ret = (void *)syscall(SYS_mmap, start, len, prot, flags, fd, off);
#endif