dba2eab826
There are several assembly functions that transition from the Windows ABI to the Go ABI. These all need to save all registers that are callee-save in the Windows ABI and caller-save in the Go ABI and prepare the register state for Go. However, they all do this slightly differently and most of them don't save the necessary XMM registers for this transition (which could corrupt them in the C caller). Furthermore, now that we have a carefully specified Go ABI, it's clear that none of these actually get all of the details 100% right. So, unify this code into two macros in a shared header in runtime/cgo/abi_amd64.h that handle all necessary registers and setup and use these macros everywhere on Windows that handles transitions from C to Go. Change-Id: I62f41345a507aad1ca383814ac8b7e2a9ffb821e Reviewed-on: https://go-review.googlesource.com/c/go/+/309769 Trust: Austin Clements <austin@google.com> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> Reviewed-by: Michael Knyszek <mknyszek@google.com> |
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