arm64: debug: fix mdscr.ss check when enabling debug exceptions
When we take an exception at EL1, we only want to enable debug exceptions if we're not currently stepping, otherwise we can easily get stuck in a loop stepping into interrupt handlers. Unfortunately, the current code tests the wrong bit in the mdscr, so fix that. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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@ -82,7 +82,7 @@
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.macro enable_dbg_if_not_stepping, tmp
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mrs \tmp, mdscr_el1
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tbnz \tmp, #1, 9990f
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tbnz \tmp, #0, 9990f
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enable_dbg
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9990:
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.endm
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