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add isb after cpacr update

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Simon Renblad 2025-01-06 14:21:59 +08:00
parent 710984bdaf
commit 281ba1370d
1 changed files with 1 additions and 0 deletions
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libcortex_a9/src/fpu.rs
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@ -6,6 +6,7 @@ pub fn enable_fpu() {
mrc p15, 0, r1, c1, c0, 2 mrc p15, 0, r1, c1, c0, 2
orr r1, r1, (0b1111<<20) orr r1, r1, (0b1111<<20)
mcr p15, 0, r1, c1, c0, 2 mcr p15, 0, r1, c1, c0, 2
isb
vmrs r1, fpexc vmrs r1, fpexc
orr r1, r1, (1<<30) orr r1, r1, (1<<30)