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| author | Johannes Berg <johannes.berg@intel.com> | 2014-02-20 11:55:12 +0100 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2014-02-20 11:55:12 +0100 |
| commit | bf5f48339a019c9b4b42284c3f45d58942cbda27 (patch) | |
| tree | 79976135166ffbdaf4ccb91bcadb17ddb551f060 /arch/powerpc/lib/code-patching.c | |
| parent | d85dad75566674ca8012715ac00a84ced3697972 (diff) | |
| parent | 35582ad9d342025653aaf28ed321bf5352488d7f (diff) | |
Merge remote-tracking branch 'wireless-next/master' into mac80211-next
Diffstat (limited to 'arch/powerpc/lib/code-patching.c')
| -rw-r--r-- | arch/powerpc/lib/code-patching.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c index 17e5b236431..d5edbeb8eb8 100644 --- a/arch/powerpc/lib/code-patching.c +++ b/arch/powerpc/lib/code-patching.c @@ -159,6 +159,21 @@ unsigned int translate_branch(const unsigned int *dest, const unsigned int *src) return 0; } +#ifdef CONFIG_PPC_BOOK3E_64 +void __patch_exception(int exc, unsigned long addr) +{ + extern unsigned int interrupt_base_book3e; + unsigned int *ibase = &interrupt_base_book3e; + + /* Our exceptions vectors start with a NOP and -then- a branch + * to deal with single stepping from userspace which stops on + * the second instruction. Thus we need to patch the second + * instruction of the exception, not the first one + */ + + patch_branch(ibase + (exc / 4) + 1, addr, 0); +} +#endif #ifdef CONFIG_CODE_PATCHING_SELFTEST |