arm: Do not clear LR on exception in SPL
PATCH 1/1 arm: Do not clear LR on exception in SPL
When an exception or interrupt occurs the link register (LR) may contain the source of the exception, although we do not print the value it may still be extracted with a debugger. When in SPL we loop on getting and exception, but use a linking branch, which over-writes the LR value, use a regular branch instruction here.
Signed-off-by Andrew F. Davis <[email protected]>
--- arch/arm/lib/vectors.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
arch/arm/lib/vectors.S +1 -1
@@ -133,7 +133,7 @@ not_used: irq: fiq: 1: - bl 1b /* hang and never return */ + b 1b /* hang and never return */ #else /* !CONFIG_SPL_BUILD */
Signature · 1 line
2.17.1
Quoted 7 lines · Andrew F. Davis
When an exception or interrupt occurs the link register (LR) may contain the source of the exception, although we do not print the value it may still be extracted with a debugger. When in SPL we loop on getting and exception, but use a linking branch, which over-writes the LR value, use a regular branch instruction here.
Signed-off-by Andrew F. Davis <[email protected]>
Applied to u-boot/master, thanks!
Signature · 8 lines
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