A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-30 11:41:38 -04:00
Code Issues Projects Releases Packages Wiki Activity

arm64: Implement __lshrti3 library function

Browse source 
Commit fb8722735f ("arm64: support __int128 on gcc 5+") added support
for the __int128 data type, but this breaks the build in some configurations
where GCC ends up emitting calls to the __lshrti3 helper in libgcc, which
results in a link error:

  kernel/sched/fair.o: In function `__calc_delta':
  fair.c:(.text+0xca0): undefined reference to `__lshrti3'
  kernel/time/timekeeping.o: In function `timekeeping_resume':
  timekeeping.c:(.text+0x3f60): undefined reference to `__lshrti3'
  make: *** [vmlinux] Error 1

Fix the build by providing an implementation of __lshrti3, like we do
already for __ashlti3 and __ashrti3.

Reported-by: Arnd Bergmann <[email protected]>
Signed-off-by: Jason A. Donenfeld <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
This commit is contained in:
Jason A. Donenfeld 2017-11-07 01:49:54 +00:00 • committed by Will Deacon
commit 9bfe7553fa
1 changed files with 21 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

21
arch/arm64/lib/tishift.S
View file

@ -57,3 +57,24 @@ ENTRY(__ashrti3)
mov x1, x2
ret
ENDPROC(__ashrti3)
ENTRY(__lshrti3)
cbz x2, 1f
mov x3, #64
sub x3, x3, x2
cmp x3, #0
b.le 2f
lsr x0, x0, x2
lsl x3, x1, x3
lsr x2, x1, x2
orr x0, x0, x3
mov x1, x2
1:
ret
2:
neg w0, w3
mov x2, #0
lsr x0, x1, x0
mov x1, x2
ret
ENDPROC(__lshrti3)