From 85a6623152988c267cea008d20616b61ea9c223c Mon Sep 17 00:00:00 2001
From: Sverker Eriksson <sverker@erlang.org>
Date: Tue, 12 Apr 2016 20:41:58 +0200
Subject: erts: Add 'exec_alloc' for hipe code

that uses its own super carrier (erts_exec_mmapper)
to guarantee low addressed and executable memory (PROT_EXEC).

Currently only used on x86_64 that needs low memory
for HiPE/AMD64's small code model.

By initializing erts_exec_mapper early we secure
its low memory area before erts_literal_mmapper might
steal it.
---
 erts/etc/common/erlexec.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'erts/etc')

diff --git a/erts/etc/common/erlexec.c b/erts/etc/common/erlexec.c
index 54da59e50d..96259f8fa6 100644
--- a/erts/etc/common/erlexec.c
+++ b/erts/etc/common/erlexec.c
@@ -74,6 +74,7 @@ static const char plusM_au_allocs[]= {
     'R',	/* driver_alloc		*/
     'S',	/* sl_alloc		*/
     'T',	/* temp_alloc		*/
+    'X',	/* exec_alloc		*/
     'Z',        /* test_alloc           */
     '\0'
 };
@@ -123,6 +124,7 @@ static char *plusM_other_switches[] = {
     "Ytp",
     "Ytt",
     "Iscs",
+    "Xscs",
     NULL
 };
 
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