From: Rich Felker <dalias@aerifal.cx>
Date: Wed, 17 Jul 2019 03:07:49 +0000 (-0400)
Subject: fix broken lseek on x32 (x86_64/ILP32) with offsets larger than LONG_MAX
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=1a28c6eade3046e73da0e80bbb7c377f24f514c7;p=musl

fix broken lseek on x32 (x86_64/ILP32) with offsets larger than LONG_MAX

this is analogous to commit 918c5fa0fc656e49b1ab9ce47183a23e3a36bc00
which fixed the corresponding issue for mips n32.
---

diff --git a/src/unistd/x32/lseek.c b/src/unistd/x32/lseek.c
new file mode 100644
index 00000000..32636429
--- /dev/null
+++ b/src/unistd/x32/lseek.c
@@ -0,0 +1,15 @@
+#include <unistd.h>
+#include "syscall.h"
+
+off_t __lseek(int fd, off_t offset, int whence)
+{
+	off_t ret;
+	__asm__ __volatile__ ("syscall"
+		: "=a"(ret)
+		: "a"(SYS_lseek), "D"(fd), "S"(offset), "d"(whence)
+		: "rcx", "r11", "memory");
+	return ret < 0 ? __syscall_ret(ret) : ret;
+}
+
+weak_alias(__lseek, lseek);
+weak_alias(__lseek, lseek64);