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go/src/runtime/textflag.h
Michael Hudson-Doyle 45c06b27a4 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>
2015-10-18 22:13:30 +00:00

31 lines
1.2 KiB
C

// Copyright 2013 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// This file defines flags attached to various functions
// and data objects. The compilers, assemblers, and linker must
// all agree on these values.
// Don't profile the marked routine. This flag is deprecated.
#define NOPROF 1
// It is ok for the linker to get multiple of these symbols. It will
// pick one of the duplicates to use.
#define DUPOK 2
// Don't insert stack check preamble.
#define NOSPLIT 4
// Put this data in a read-only section.
#define RODATA 8
// This data contains no pointers.
#define NOPTR 16
// This is a wrapper function and should not count as disabling 'recover'.
#define WRAPPER 32
// This function uses its incoming context register.
#define NEEDCTXT 64
// 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