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runtime: generate windows/arm64 callback asm

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This CL is part of a stack adding windows/arm64
support (#36439), intended to land in the Go 1.17 cycle.

Change-Id: I5e2b589797808626bcca771cdf860d5cb85586cb
Reviewed-on: https://go-review.googlesource.com/c/go/+/288826
Trust: Russ Cox <rsc@golang.org>
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Russ Cox 2021-01-22 15:16:13 -05:00
parent f6c4b4bf96
commit 427bd7599d
3 changed files with 4043 additions and 2 deletions
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4
src/runtime/syscall_windows.go
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@ -71,8 +71,8 @@ func callbackasmAddr(i int) uintptr {
panic("unsupported architecture")
case "386", "amd64":
entrySize = 5
case "arm":
// On ARM, each entry is a MOV instruction
case "arm", "arm64":
// On ARM and ARM64, each entry is a MOV instruction
// followed by a branch instruction
entrySize = 8
}