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| author | Michael Neuling <mikey@neuling.org> | 2016-03-07 13:27:33 +1100 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2016-03-07 14:04:02 +1100 |
| commit | fe4bf686b88e25f8b74e3f712dadb8ca3ea133a3 (patch) | |
| tree | 6c12089bf4b2d8d4ec4dda9824bbe08d40312a15 /core/init.c | |
| parent | de9f52b7bb8672e52430918c58fbf9dc7cb2e876 (diff) | |
| download | skiboot-fe4bf686b88e25f8b74e3f712dadb8ca3ea133a3.zip skiboot-fe4bf686b88e25f8b74e3f712dadb8ca3ea133a3.tar.gz skiboot-fe4bf686b88e25f8b74e3f712dadb8ca3ea133a3.tar.bz2 | |
init: Save away first 16 bytes of memory
Currently the null branch catcher blows away the first 16 bytes of
memory.
This patch saves this away in case we need to reinstate them later
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'core/init.c')
| -rw-r--r-- | core/init.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/core/init.c b/core/init.c index 1d2f6e0..1d9ef70 100644 --- a/core/init.c +++ b/core/init.c @@ -49,6 +49,7 @@ enum proc_gen proc_gen; static uint64_t kernel_entry; static bool kernel_32bit; +static char zero_location[16]; #ifdef SKIBOOT_GCOV void skiboot_gcov_done(void); @@ -539,6 +540,7 @@ static void setup_branch_null_catcher(void) * ABI v1 (ie. big endian). This will be broken if we ever * move to ABI v2 (ie little endian) */ + memcpy(zero_location, 0, 16); /* Save away in case we need it later */ memcpy(0, bn, 16); } |