From: Rich Felker <dalias@aerifal.cx>
Date: Thu, 3 May 2012 01:14:41 +0000 (-0400)
Subject: PIE support for x86_64 (untested)
X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=commitdiff_plain;h=94167cafd5a8f4f8309c3f82f5bda17f4767cb60

PIE support for x86_64 (untested)
---

diff --git a/crt/x86_64/Scrt1.s b/crt/x86_64/Scrt1.s
new file mode 100644
index 00000000..d8b71617
--- /dev/null
+++ b/crt/x86_64/Scrt1.s
@@ -0,0 +1,18 @@
+/* Written 2011 Nicholas J. Kain, released as Public Domain */
+.weak _init
+.weak _fini
+.text
+.global _start
+_start:
+	xor %rbp,%rbp   /* rbp:undefined -> mark as zero 0 (ABI) */
+	mov %rdx,%r9    /* 6th arg: ptr to register with atexit() */
+	pop %rsi        /* 2nd arg: argc */
+	mov %rsp,%rdx   /* 3rd arg: argv */
+	andq $-16,%rsp  /* align stack pointer */
+	push %rax       /* 8th arg: glibc ABI compatible */
+	push %rsp       /* 7th arg: glibc ABI compatible */
+	lea _fini(%rip),%r8           /* 5th arg: fini/dtors function */
+	lea _init(%rip),%rcx          /* 4th arg: init/ctors function */
+	mov main@GOTPCREL(%rip),%rdi  /* 1st arg: application entry ip */
+	call __libc_start_main@PLT    /* musl init will run the program */
+1:	jmp 1b