diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2017-04-06 01:56:55 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-04-07 02:35:51 +0300 |
| commit | b3622d3217eb351717b157d64ce0895e662b7657 (patch) | |
| tree | 11ce6f7dbe4d58e945a32acb19f8e22cbc32f894 /arch/ia64/lib/memcpy_mck.S | |
| parent | 652c1aaca2a026d374d139058e8e7f3175e861d6 (diff) | |
| download | linux-b3622d3217eb351717b157d64ce0895e662b7657.tar.xz | |
get rid of padding, switch to RAW_COPY_USER
Merced is fucked, so what else is new?
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/ia64/lib/memcpy_mck.S')
| -rw-r--r-- | arch/ia64/lib/memcpy_mck.S | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/arch/ia64/lib/memcpy_mck.S b/arch/ia64/lib/memcpy_mck.S index b264b6a7967b..bbbadc478f5b 100644 --- a/arch/ia64/lib/memcpy_mck.S +++ b/arch/ia64/lib/memcpy_mck.S @@ -556,9 +556,6 @@ EK(.ex_handler, (p17) st8 [dst1]=r39,8); \ #define D r22 #define F r28 -#define memset_arg0 r32 -#define memset_arg2 r33 - #define saved_retval loc0 #define saved_rtlink loc1 #define saved_pfs_stack loc2 @@ -622,7 +619,7 @@ EK(.ex_handler, (p17) st8 [dst1]=r39,8); \ * (faulting_addr - orig_dst) -> len to faulting st address * B = (cur_dst - orig_dst) -> len copied so far * C = A - B -> len need to be copied - * D = orig_len - A -> len need to be zeroed + * D = orig_len - A -> len need to be left along */ (p6) sub A = F, saved_in0 (p7) sub A = F, saved_in1 @@ -638,9 +635,6 @@ EK(.ex_handler, (p17) st8 [dst1]=r39,8); \ sub D = saved_in2, A ;; cmp.gt p8,p0=C,r0 // more than 1 byte? - add memset_arg0=saved_in0, A -(p6) mov memset_arg2=0 // copy_to_user should not call memset -(p7) mov memset_arg2=D // copy_from_user need to have kbuf zeroed mov r8=0 mov saved_retval = D mov saved_rtlink = b0 @@ -652,11 +646,6 @@ EK(.ex_handler, (p17) st8 [dst1]=r39,8); \ ;; add saved_retval=saved_retval,r8 // above might return non-zero value - cmp.gt p8,p0=memset_arg2,r0 // more than 1 byte? - mov out0=memset_arg0 // *s - mov out1=r0 // c - mov out2=memset_arg2 // n -(p8) br.call.sptk.few b0=memset ;; mov retval=saved_retval |