From 4b2319fd67631e06ab655f445d3b3cfcb18d3714 Mon Sep 17 00:00:00 2001
From: pancake <pancake@nowsecure.com>
Date: Wed, 2 Jun 2021 15:09:57 +0200
Subject: [PATCH] native: fix macho header for amd64 macOS 'Big Sur' (#10304)

---
 vlib/v/gen/native/amd64.v | 10 ++++------
 vlib/v/gen/native/macho.v | 14 +++++++-------
 2 files changed, 11 insertions(+), 13 deletions(-)

diff --git a/vlib/v/gen/native/amd64.v b/vlib/v/gen/native/amd64.v
index 1f421e6085..99c8d5a9d9 100644
--- a/vlib/v/gen/native/amd64.v
+++ b/vlib/v/gen/native/amd64.v
@@ -664,13 +664,11 @@ fn (mut g Gen) fn_decl(node ast.FnDecl) {
 		// println('end of main: gen exit')
 		zero := ast.IntegerLiteral{}
 		g.gen_exit(zero)
-		// return
-	}
-	if !is_main {
-		// g.leave()
-		g.add8(.rsp, 0x10)
-		g.pop(.rbp)
+		return
 	}
+	// g.leave()
+	g.add8(.rsp, 0x10)
+	g.pop(.rbp)
 	g.ret()
 }
 
diff --git a/vlib/v/gen/native/macho.v b/vlib/v/gen/native/macho.v
index a61b5d424e..6e7ebd3648 100644
--- a/vlib/v/gen/native/macho.v
+++ b/vlib/v/gen/native/macho.v
@@ -11,14 +11,14 @@ const (
 	//
 	macho_symcmd_size        = 0x18
 	macho_d_size             = 0x50
-	lc_symtab                = 0x2
-	lc_dysymtab              = 0xb
 	mh_object                = 1
 	mh_execute               = 2
+	lc_dysymtab              = 0xb
+	lc_load_dylib            = 0xc
+	lc_load_dylinker         = 0xe
 	lc_main                  = 0x80000028
 	lc_segment_64            = 0x19
-	lc_load_dylinker         = 0xe
-	lc_load_dylib            = 0xc
+	lc_symtab                = 0x2
 )
 
 struct Symbol {
@@ -95,7 +95,7 @@ fn (mut g Gen) macho_segment64_text() []int {
 	g.write32(native.lc_segment_64) // LC_SEGMENT_64
 	g.write32(152) // 152
 	g.write_string_with_padding('__TEXT', 16) // section name
-	g.write64(0x100001000) // vmaddr
+	g.write64(0x100000000) // vmaddr
 	patch << g.buf.len
 	g.write64(0x00001000) // + codesize) // vmsize
 	g.write64(0x00000000) // filesize
@@ -109,7 +109,7 @@ fn (mut g Gen) macho_segment64_text() []int {
 
 	g.write_string_with_padding('__text', 16) // section name
 	g.write_string_with_padding('__TEXT', 16) // segment name
-	g.write64(0x0000000100002000) // vmaddr
+	g.write64(0x0000000100001000) // vmaddr
 	patch << g.buf.len
 	g.write64(0) // vmsize
 	g.write32(4096) // offset
@@ -395,7 +395,7 @@ fn (mut g Gen) write_symbol(s Symbol) {
 fn (mut g Gen) sym_string_table() int {
 	begin := g.buf.len
 	g.zeroes(1)
-	at := i64(0x100001000)
+	at := i64(0x100000000)
 	for i, s in g.strings {
 		g.write64_at(at + g.buf.len, int(g.str_pos[i]))
 		g.write_string(s)