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cmd/internal/obj, cmd/link, runtime: increase stack limit to accommodate larger frames on ppc64x

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Larger stack frames mean nosplit functions use more stack and so the limit
needs to increase.

The change to test/nosplit.go is a bit ugly but I can't really think of a
way to make it nicer.

Change-Id: I2616b58015f0b62abbd62951575fcd0d2d8643c2
Reviewed-on: https://go-review.googlesource.com/16504
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Michael Hudson-Doyle 2015-10-30 12:47:24 +13:00
parent c3ba74931f
commit c1b6e392f5
3 changed files with 41 additions and 27 deletions
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2
src/runtime/stack.go
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@ -90,7 +90,7 @@ const (
// The stack guard is a pointer this many bytes above the
// bottom of the stack.
_StackGuard = 640*sys.StackGuardMultiplier + _StackSystem
_StackGuard = 720*sys.StackGuardMultiplier + _StackSystem
// After a stack split check the SP is allowed to be this
// many bytes below the stack guard. This saves an instruction