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| author | Vineet Gupta <vgupta@synopsys.com> | 2019-05-10 16:24:15 -0700 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2019-07-01 11:02:22 -0700 |
| commit | ab854bfcd310b5872fe12eb8d3f2c30fe427f8f7 (patch) | |
| tree | 9603e87b60aef272e54f4f501f2c1966446e764d /arch/arc | |
| parent | 23c0cbd0c75c3b564850294427fd2be2bc2a015b (diff) | |
| download | blackbird-op-linux-ab854bfcd310b5872fe12eb8d3f2c30fe427f8f7.tar.gz blackbird-op-linux-ab854bfcd310b5872fe12eb8d3f2c30fe427f8f7.zip | |
ARCv2: entry: avoid a branch
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc')
| -rw-r--r-- | arch/arc/include/asm/entry-arcv2.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/arc/include/asm/entry-arcv2.h b/arch/arc/include/asm/entry-arcv2.h index 3209a6762960..beaf655666cb 100644 --- a/arch/arc/include/asm/entry-arcv2.h +++ b/arch/arc/include/asm/entry-arcv2.h @@ -100,12 +100,11 @@ ; 2. Upon entry SP is always saved (for any inspection, unwinding etc), ; but on return, restored only if U mode + lr r9, [AUX_USER_SP] ; U mode SP + mov.nz r9, sp add.nz r9, r9, SZ_PT_REGS - PT_sp - 4 ; K mode SP - bnz 1f - lr r9, [AUX_USER_SP] ; U mode SP -1: PUSH r9 ; SP (pt_regs->sp) PUSH fp |
