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elf2dmp: Don't abandon when Prcb is set to 0

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Prcb may be set to 0 for some CPUs if the dump was taken before they
start. The dump may still contain valuable information for started CPUs
so don't abandon conversion in such a case.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Viktor Prutyanov <viktor.prutyanov@phystech.edu>
Message-id: 20230611033434.14659-1-akihiko.odaki@daynix.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Akihiko Odaki 2023-06-11 12:34:34 +09:00 committed by Peter Maydell
parent 638511e992
commit 548b8edc6d
1 changed files with 5 additions and 0 deletions
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5
contrib/elf2dmp/main.c
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@ -316,6 +316,11 @@ static int fill_context(KDDEBUGGER_DATA64 *kdbg,
return 1; return 1;
} }
if (!Prcb) {
eprintf("Context for CPU #%d is missing\n", i);
continue;
}
if (va_space_rw(vs, Prcb + kdbg->OffsetPrcbContext, if (va_space_rw(vs, Prcb + kdbg->OffsetPrcbContext,
&Context, sizeof(Context), 0)) { &Context, sizeof(Context), 0)) {
eprintf("Failed to read CPU #%d ContextFrame location\n", i); eprintf("Failed to read CPU #%d ContextFrame location\n", i);