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| author | Michael Hudson-Doyle <michael.hudson@canonical.com> | 2015-10-09 12:44:27 +1300 |
|---|---|---|
| committer | Michael Hudson-Doyle <michael.hudson@canonical.com> | 2015-10-18 22:13:30 +0000 |
| commit | 45c06b27a44a65c219a7445278b129c868332a6c (patch) | |
| tree | a004227041b6834fb5a23bb6bee0f559f1d62415 /src/runtime/textflag.h | |
| parent | d0c9b40964f1951d2684545f1a6df64be899d26d (diff) | |
| download | go-45c06b27a44a65c219a7445278b129c868332a6c.tar.gz go-45c06b27a44a65c219a7445278b129c868332a6c.zip | |
cmd/internal/obj, runtime: add NOFRAME flag to suppress stack frame set up on ppc64x
Replace the confusing game where a frame size of $-8 would suppress the
implicit setting up of a stack frame with a nice explicit flag.
The code to set up the function prologue is still a little confusing but better
than it was.
Change-Id: I1d49278ff42c6bc734ebfb079998b32bc53f8d9a
Reviewed-on: https://go-review.googlesource.com/15670
Reviewed-by: Minux Ma <minux@golang.org>
Diffstat (limited to 'src/runtime/textflag.h')
| -rw-r--r-- | src/runtime/textflag.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/runtime/textflag.h b/src/runtime/textflag.h index f2690c938e..dbf3d9977c 100644 --- a/src/runtime/textflag.h +++ b/src/runtime/textflag.h @@ -24,3 +24,7 @@ // Allocate a word of thread local storage and store the offset from the // thread local base to the thread local storage in this variable. #define TLSBSS 256 +// Do not insert instructions to allocate a stack frame for this function. +// Only valid on functions that declare a frame size of 0. +// TODO(mwhudson): only implemented for ppc64x at present. +#define NOFRAME 512 |