Alexander Markov
12f6eb699f
ClobberAndCall was using an incorrect register for the first parameter on Windows (rdx instead of rcx). This caused crashes on vm-kernel-precomp-win-release-x64 bot after landing unrelated change (https://dart-review.googlesource.com/c/sdk/+/127381). Change-Id: I5a150ecc743abdb3e00c8afd0d1dd851b777f2e9 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/128009 Reviewed-by: Daco Harkes <dacoharkes@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com> Commit-Queue: Alexander Markov <alexmarkov@google.com>
42 lines
606 B
ArmAsm
42 lines
606 B
ArmAsm
.code
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ClobberAndCall proc
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;; Clobber some significant registers and call the nullary function which is
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;; passed in as the first argument.
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;; Pool pointer register.
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push r15
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mov r15, 1
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;; Thread register.
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push r14
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mov r14, 1
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;; Code register.
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push r12
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mov r12, 1
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;; Arguments descriptor register (volatile).
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mov r10, 1
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;; Clobber all other volatile registers (except the argument).
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mov rax, 1
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mov rdx, 1
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mov r8, 1
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mov r9, 1
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mov r11, 1
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;; Stack must be 16-byte aligned before the call. We save three registers above
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;; to ensure this.
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call rcx
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pop r12
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pop r14
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pop r15
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ret
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ClobberAndCall endp
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end
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