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The calculation of FrameTemp is done using the size indicated by mo_pushpop() before being written back to EBP, but the final writeback to EBP is done using the size indicated by mo_stacksize(). In the case where mo_pushpop() is MO_32 and mo_stacksize() is MO_16 then the final writeback to EBP is done using MO_16 which can leave junk in the top 16-bits of EBP after executing ENTER. Change the writeback of EBP to use the same size indicated by mo_pushpop() to ensure that the full value is written back. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2198 Message-ID: <20240606095319.229650-5-mark.cave-ayland@ilande.co.uk> Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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