* [PATCH] libgo: fix support for ia64
@ 2017-06-06 13:11 Andreas Schwab
2017-06-07 18:13 ` Ian Lance Taylor
0 siblings, 1 reply; 2+ messages in thread
From: Andreas Schwab @ 2017-06-06 13:11 UTC (permalink / raw)
To: gcc-patches
This adds support for ia64 in lfstack.
Andreas.
diff --git a/libgo/go/runtime/lfstack_64bit.go b/libgo/go/runtime/lfstack_64bit.go
index b314a3ba21..99dcec02de 100644
--- a/libgo/go/runtime/lfstack_64bit.go
+++ b/libgo/go/runtime/lfstack_64bit.go
@@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
-// +build amd64 arm64 mips64 mips64le ppc64 ppc64le s390x arm64be alpha mipsn64 sparc64
+// +build amd64 arm64 mips64 mips64le ppc64 ppc64le s390x arm64be alpha mipsn64 sparc64 ia64
package runtime
@@ -38,12 +38,22 @@ const (
// room in the bottom for the count.
sparcLinuxAddrBits = 52
sparcLinuxCntBits = 64 - sparcLinuxAddrBits + 3
+
+ // On IA64, the virtual address space is devided into 8 regions, with
+ // 52 address bits each (with 64k page size).
+ ia64AddrBits = 55
+ ia64CntBits = 64 - ia64AddrBits + 3
)
func lfstackPack(node *lfnode, cnt uintptr) uint64 {
if GOARCH == "sparc64" && GOOS == "linux" {
return uint64(uintptr(unsafe.Pointer(node)))<<(64-sparcLinuxAddrBits) | uint64(cnt&(1<<sparcLinuxCntBits-1))
}
+ if GOARCH == "ia64" {
+ // Top three bits are the region number
+ val := uint64(uintptr(unsafe.Pointer(node)))
+ return (val<<(64-ia64AddrBits))&(1<<(64-3)-1) | val&^(1<<(64-3)-1) | uint64(cnt&(1<<ia64CntBits-1))
+ }
return uint64(uintptr(unsafe.Pointer(node)))<<(64-addrBits) | uint64(cnt&(1<<cntBits-1))
}
@@ -56,5 +66,8 @@ func lfstackUnpack(val uint64) *lfnode {
if GOARCH == "sparc64" && GOOS == "linux" {
return (*lfnode)(unsafe.Pointer(uintptr(int64(val) >> sparcLinuxCntBits << 3)))
}
+ if GOARCH == "ia64" {
+ return (*lfnode)(unsafe.Pointer(uintptr((val >> ia64CntBits << 3)&(1<<(64-3)-1) | val&^(1<<(64-3)-1))))
+ }
return (*lfnode)(unsafe.Pointer(uintptr(val >> cntBits << 3)))
}
--
2.13.1
--
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] libgo: fix support for ia64
2017-06-06 13:11 [PATCH] libgo: fix support for ia64 Andreas Schwab
@ 2017-06-07 18:13 ` Ian Lance Taylor
0 siblings, 0 replies; 2+ messages in thread
From: Ian Lance Taylor @ 2017-06-07 18:13 UTC (permalink / raw)
To: Andreas Schwab; +Cc: gcc-patches, gofrontend-dev
On Tue, Jun 6, 2017 at 6:11 AM, Andreas Schwab <schwab@suse.de> wrote:
> This adds support for ia64 in lfstack.
Thanks.
Committed to mainline.
Ian
> diff --git a/libgo/go/runtime/lfstack_64bit.go b/libgo/go/runtime/lfstack_64bit.go
> index b314a3ba21..99dcec02de 100644
> --- a/libgo/go/runtime/lfstack_64bit.go
> +++ b/libgo/go/runtime/lfstack_64bit.go
> @@ -2,7 +2,7 @@
> // Use of this source code is governed by a BSD-style
> // license that can be found in the LICENSE file.
>
> -// +build amd64 arm64 mips64 mips64le ppc64 ppc64le s390x arm64be alpha mipsn64 sparc64
> +// +build amd64 arm64 mips64 mips64le ppc64 ppc64le s390x arm64be alpha mipsn64 sparc64 ia64
>
> package runtime
>
> @@ -38,12 +38,22 @@ const (
> // room in the bottom for the count.
> sparcLinuxAddrBits = 52
> sparcLinuxCntBits = 64 - sparcLinuxAddrBits + 3
> +
> + // On IA64, the virtual address space is devided into 8 regions, with
> + // 52 address bits each (with 64k page size).
> + ia64AddrBits = 55
> + ia64CntBits = 64 - ia64AddrBits + 3
> )
>
> func lfstackPack(node *lfnode, cnt uintptr) uint64 {
> if GOARCH == "sparc64" && GOOS == "linux" {
> return uint64(uintptr(unsafe.Pointer(node)))<<(64-sparcLinuxAddrBits) | uint64(cnt&(1<<sparcLinuxCntBits-1))
> }
> + if GOARCH == "ia64" {
> + // Top three bits are the region number
> + val := uint64(uintptr(unsafe.Pointer(node)))
> + return (val<<(64-ia64AddrBits))&(1<<(64-3)-1) | val&^(1<<(64-3)-1) | uint64(cnt&(1<<ia64CntBits-1))
> + }
> return uint64(uintptr(unsafe.Pointer(node)))<<(64-addrBits) | uint64(cnt&(1<<cntBits-1))
> }
>
> @@ -56,5 +66,8 @@ func lfstackUnpack(val uint64) *lfnode {
> if GOARCH == "sparc64" && GOOS == "linux" {
> return (*lfnode)(unsafe.Pointer(uintptr(int64(val) >> sparcLinuxCntBits << 3)))
> }
> + if GOARCH == "ia64" {
> + return (*lfnode)(unsafe.Pointer(uintptr((val >> ia64CntBits << 3)&(1<<(64-3)-1) | val&^(1<<(64-3)-1))))
> + }
> return (*lfnode)(unsafe.Pointer(uintptr(val >> cntBits << 3)))
> }
> --
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2017-06-07 18:13 ` Ian Lance Taylor
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