diff options
| author | jistone <jistone> | 2007-02-06 22:55:59 +0000 |
|---|---|---|
| committer | jistone <jistone> | 2007-02-06 22:55:59 +0000 |
| commit | 88b3808b6ce58165aa4c526eafca3dc08daf8f88 (patch) | |
| tree | ebbc6c1deee029efbb2134a4d2361b2653e9f9fe /runtime/loc2c-runtime.h | |
| parent | f902d9596b3f7ee135d180ec0bae01c05d9a97bd (diff) | |
| download | systemtap-steved-88b3808b6ce58165aa4c526eafca3dc08daf8f88.tar.gz systemtap-steved-88b3808b6ce58165aa4c526eafca3dc08daf8f88.tar.xz systemtap-steved-88b3808b6ce58165aa4c526eafca3dc08daf8f88.zip | |
2007-02-06 Josh Stone <joshua.i.stone@intel.com>
runtime/
* loc2c-runtime.h (kread): Let it work with const types.
testsuite/
* systemtap.base/deref.stp: Test kread with const sources.
Diffstat (limited to 'runtime/loc2c-runtime.h')
| -rw-r--r-- | runtime/loc2c-runtime.h | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/runtime/loc2c-runtime.h b/runtime/loc2c-runtime.h index 7ed9d415..8ccc9826 100644 --- a/runtime/loc2c-runtime.h +++ b/runtime/loc2c-runtime.h @@ -467,16 +467,12 @@ /* x86 can't do 8-byte put/get_user_asm, so we have to split it */ -#define kread(ptr) \ - ({ \ - union { typeof(*(ptr)) v; u32 l[2]; } _kr; \ - if (sizeof(*(ptr)) == 8) { \ - _kr.l[0] = (u32) deref(4, &((u32 *)(ptr))[0]); \ - _kr.l[1] = (u32) deref(4, &((u32 *)(ptr))[1]); \ - } else \ - _kr.v = (typeof(*(ptr))) deref(sizeof(*(ptr)), (ptr)); \ - _kr.v; \ - }) +#define kread(ptr) \ + ((sizeof(*(ptr)) == 8) ? \ + *(typeof(ptr))&(u32[2]) { \ + (u32) deref(4, &((u32 *)(ptr))[0]), \ + (u32) deref(4, &((u32 *)(ptr))[1]) } \ + : (typeof(*(ptr))) deref(sizeof(*(ptr)), (ptr))) #define kwrite(ptr, value) \ ({ \ |