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Reader: implement jmp msil instruction #192

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erozenfeld opened this issue Feb 24, 2015 · 1 comment
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Reader: implement jmp msil instruction #192

erozenfeld opened this issue Feb 24, 2015 · 1 comment
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@erozenfeld erozenfeld added this to the Sprint 87 milestone Jul 25, 2015
@erozenfeld erozenfeld assigned erozenfeld and unassigned libengu Jul 25, 2015
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This is needed for ngen-ing mscorlib.dll.

erozenfeld added a commit to erozenfeld/llilc that referenced this issue Jul 31, 2015
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Implement translation of jmp msil instruction.
7c7198c 
jmp is implemented as a call marked with musttail followed by a ret.

If the caller has a secret parameter we need to pass it to the jmp call
because the signature and the calling convention of the caller and
the musttail call must match. To accommodate that a parallel
LLVM change modifies CLR_SecretParameter calling convention
to make the secret parameter the first pointer-sized parameter
(still passed in R10) rather than a parameter passed with a
"CLR_SecretParameter" attribute.

All indirect parameters are passed as they come to the caller, without
copying them to the current frame.

Indirect result parameter is typed as a managed pointer in a jmp call
because we type indirect result parameter for the caller as a
managed pointer.

Closes dotnet#192.
@erozenfeld erozenfeld mentioned this issue Jul 31, 2015
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