[PATCH] sparc: Remove sequence that could trigger B2BST errata
Daniel Hellstrom
daniel at gaisler.com
Wed Sep 19 14:13:26 UTC 2018
From: Daniel Cederman <cederman at gaisler.com>
---
cpukit/score/cpu/sparc/syscall.S | 2 --
1 file changed, 2 deletions(-)
diff --git a/cpukit/score/cpu/sparc/syscall.S b/cpukit/score/cpu/sparc/syscall.S
index 574cf66..603ed7a 100644
--- a/cpukit/score/cpu/sparc/syscall.S
+++ b/cpukit/score/cpu/sparc/syscall.S
@@ -212,9 +212,7 @@ SYM(syscall_lazy_fp_switch):
std %f30, [%l5 + SPARC_FP_CONTEXT_OFFSET_F30_F31]
SPARC_LEON3FT_B2BST_NOP
st %fsr, [%l5 + SPARC_FP_CONTEXT_OFFSET_FSR]
- SPARC_LEON3FT_B2BST_NOP
st %g0, [%g6 + SPARC_PER_CPU_FP_OWNER_OFFSET]
- SPARC_LEON3FT_B2BST_NOP
st %l5, [%l7 + %lo(SPARC_THREAD_CONTROL_REGISTERS_FP_CONTEXT_OFFSET)]
.Lfp_save_done:
--
2.7.4
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