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sparc: Remove sequences that the B2BST scan script warns about

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Update #4336.
This commit is contained in:
Daniel Cederman
2017-12-19 13:37:08 +01:00
committed by Daniel Hellstrom
parent bfd1b6eef3
commit 0cae482a45
2 changed files with 6 additions and 3 deletions
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6
cpukit/score/cpu/sparc/cpu_asm.S
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@@ -683,11 +683,13 @@ isr_dispatch:
cmp %l6, %l7
bne,a .Ldisable_fp
andn %l0, %l5, %l0
st %g0, [%g6 + SPARC_PER_CPU_FP_OWNER_OFFSET]
ba .Lthread_dispatch_done
st %g0, [%g6 + SPARC_PER_CPU_FP_OWNER_OFFSET]
nop
.Ldisable_fp:
st %l0, [%fp + ISF_PSR_OFFSET]
ba .Lthread_dispatch_done
st %l0, [%fp + ISF_PSR_OFFSET]
nop
.Lnon_fp_thread_dispatch:
#elif defined(SPARC_USE_SYNCHRONOUS_FP_SWITCH)
/* Test if we interrupted a floating point thread (PSR[EF] == 1) */

3
cpukit/score/cpu/sparc/syscall.S
View File

@@ -218,9 +218,10 @@ SYM(syscall_lazy_fp_switch):
.Lfp_save_done:
/* Restore the floating point context if necessary */
st %g0, [%l4 + %lo(SPARC_THREAD_CONTROL_REGISTERS_FP_CONTEXT_OFFSET)]
cmp %l6, 0
be .Lfp_restore_done
st %g0, [%l4 + %lo(SPARC_THREAD_CONTROL_REGISTERS_FP_CONTEXT_OFFSET)]
nop
ldd [%l6 + SPARC_FP_CONTEXT_OFFSET_F0_F1], %f0
ldd [%l6 + SPARC_FP_CONTEXT_OFFSET_F2_F3], %f2
ldd [%l6 + SPARC_FP_CONTEXT_OFFSET_F4_F5], %f4