diff options
Diffstat (limited to 'runtime/loc2c-runtime.h')
| -rw-r--r-- | runtime/loc2c-runtime.h | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/runtime/loc2c-runtime.h b/runtime/loc2c-runtime.h index c51908a9..4617f697 100644 --- a/runtime/loc2c-runtime.h +++ b/runtime/loc2c-runtime.h @@ -1,6 +1,6 @@ /* target operations * Copyright (C) 2005 Red Hat Inc. - * Copyright (C) 2005,2006 Intel Corporation. + * Copyright (C) 2005, 2006, 2007 Intel Corporation. * * This file is part of systemtap, and is free software. You can * redistribute it and/or modify it under the terms of the GNU General @@ -461,3 +461,41 @@ *_d = '\0'; \ (dst); \ }) + + +#if defined __i386__ + +/* x86 can't do 8-byte put/get_user_asm, so we have to split it */ + +#define kread(ptr) \ + ({ \ + typeof(*(ptr)) _r; \ + if (sizeof(*(ptr)) == 8) { \ + union { u64 q; u32 l[2]; } _q; \ + _q.l[0] = (u32) deref(4, &((u32 *)(ptr))[0]); \ + _q.l[1] = (u32) deref(4, &((u32 *)(ptr))[1]); \ + _r = (typeof(*(ptr))) _q.q; \ + } else \ + _r = (typeof(*(ptr))) deref(sizeof(*(ptr)), (ptr)); \ + _r; \ + }) + +#define kwrite(ptr, value) \ + ({ \ + if (sizeof(*(ptr)) == 8) { \ + union { u64 q; u32 l[2]; } _q; \ + _q.q = (u64)(typeof(*(ptr)))(value); \ + store_deref(4, &((u32 *)(ptr))[0], _q.l[0]); \ + store_deref(4, &((u32 *)(ptr))[1], _q.l[1]); \ + } else \ + store_deref(sizeof(*(ptr)), (ptr), (typeof(*(ptr)))(value)); \ + }) + +#else + +#define kread(ptr) \ + ( (typeof(*(ptr))) deref(sizeof(*(ptr)), (ptr)) ) +#define kwrite(ptr, value) \ + ( store_deref(sizeof(*(ptr)), (ptr), (typeof(*(ptr)))(value)) ) + +#endif |