From a292bd33e1212057f7abc86210b5eeefc3c68e7f Mon Sep 17 00:00:00 2001
From: Zeex <zeex@rocketmail.com>
Date: Wed, 11 Nov 2020 01:54:03 +0600
Subject: Don't use MAP_32BIT on macOS

This flag requires use of entitlements i.e. code signing...
---
 subhook_unix.c | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

(limited to 'subhook_unix.c')

diff --git a/subhook_unix.c b/subhook_unix.c
index d0d1251..6a5410b 100644
--- a/subhook_unix.c
+++ b/subhook_unix.c
@@ -40,15 +40,18 @@ int subhook_unprotect(void *address, size_t size) {
 }
 
 void *subhook_alloc_code(size_t size) {
-  return mmap(NULL,
-              size,
-              SUBHOOK_CODE_PROTECT_FLAGS,
-              #ifdef MAP_32BIT
-                MAP_32BIT |
-              #endif
-              MAP_PRIVATE | MAP_ANONYMOUS,
-              -1,
-              0);
+  void *address;
+
+  address = mmap(NULL,
+                 size,
+                 SUBHOOK_CODE_PROTECT_FLAGS,
+                 #if defined MAP_32BIT && !defined __APPLE__
+                   MAP_32BIT |
+                 #endif
+                 MAP_PRIVATE | MAP_ANONYMOUS,
+                 -1,
+                 0);
+  return address == MAP_FAILED ? NULL : address;
 }
 
 int subhook_free_code(void *address, size_t size) {
-- 
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