diff options
| author | Chris Zankel <chris@zankel.net> | 2007-11-14 13:47:02 -0800 |
|---|---|---|
| committer | Chris Zankel <chris@zankel.net> | 2008-02-13 17:21:27 -0800 |
| commit | 50c0716aa2f49a9d34589e380fad73402464c088 (patch) | |
| tree | 714e50f1c391bbed2034b361ac2be66773b1cb2c | |
| parent | ed3174d93c342b8b2eeba6bbd124707d55304a7b (diff) | |
[XTENSA] Add missing a2 register restore in register spill routine
Register a2 is saved in depc but wasn't getting restored before
returning from _spill_registers when there weren't any registers
to spill. The mask to cut the top bit from the rotated WINDOWMASK
register was also one bit short.
Signed-off-by: CHris Zankel <chris@zankel.net>
| -rw-r--r-- | arch/xtensa/kernel/entry.S | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S index 91a689eca43..401b33bfd9c 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -1344,7 +1344,7 @@ ENTRY(_spill_registers) /* We are done if there are no more than the current register frame. */ - extui a3, a3, 1, WSBITS-2 # a3 = 0yyxxxwww + extui a3, a3, 1, WSBITS-1 # a3 = 0yyxxxwww movi a2, (1 << (WSBITS-1)) _beqz a3, .Lnospill # only one active frame? jump @@ -1394,6 +1394,10 @@ ENTRY(_spill_registers) l32e a4, a1, -16 j .Lc12c +.Lnospill: + rsr a2, DEPC # restore a2 and 'return' + jx a0 + .Lloop: _bbsi.l a3, 1, .Lc4 _bbci.l a3, 2, .Lc12 @@ -1419,8 +1423,6 @@ ENTRY(_spill_registers) movi a3, 1 sll a3, a3 wsr a3, WINDOWSTART - -.Lnospill: jx a0 .Lc4: s32e a4, a9, -16 |