unimore/kernel-hacking-2024-linux-steffo
unimore/kernel-hacking-2024-linux-steffo
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annotate that [fp, #-4] is the saved lr

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Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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Uwe Kleine-König 2009-01-31 01:21:56 +01:00
parent 6fd7ad96d6
commit b3c960b277
1 changed files with 1 additions and 1 deletions
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2
arch/arm/kernel/entry-common.S
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@ -136,7 +136,7 @@ ENTRY(mcount)
ldmia sp!, {r0-r3, pc}
trace:
ldr r1, [fp, #-4]
ldr r1, [fp, #-4] @ lr of instrumented routine
mov r0, lr
sub r0, r0, #MCOUNT_INSN_SIZE
mov lr, pc