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authorRich Felker <dalias@aerifal.cx>2012-05-02 21:01:55 -0400
committerRich Felker <dalias@aerifal.cx>2012-05-02 21:01:55 -0400
commit83023d1b50297cd2aa0fe4cbd2a0539462bb7c48 (patch)
tree899f0e3f0a7e759bdec1a0a657a4780179d8c9f3
parentc9dea48f84cd772ac250c091356dd6ef956ea3f6 (diff)
downloadmusl-83023d1b50297cd2aa0fe4cbd2a0539462bb7c48.tar.gz
PIE support for i386
-rw-r--r--Makefile2
-rw-r--r--crt/Scrt1.c0
-rw-r--r--crt/i386/Scrt1.s24
3 files changed, 25 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 2265fce4..1b9e2436 100644
--- a/Makefile
+++ b/Makefile
@@ -39,7 +39,7 @@ ALL_INCLUDES = $(sort $(wildcard include/*.h include/*/*.h) $(GENH))
EMPTY_LIB_NAMES = m rt pthread crypt util xnet resolv dl
EMPTY_LIBS = $(EMPTY_LIB_NAMES:%=lib/lib%.a)
-CRT_LIBS = lib/crt1.o lib/crti.o lib/crtn.o
+CRT_LIBS = lib/crt1.o lib/Scrt1.o lib/crti.o lib/crtn.o
STATIC_LIBS = lib/libc.a
SHARED_LIBS = lib/libc.so
TOOL_LIBS = lib/musl-gcc.specs
diff --git a/crt/Scrt1.c b/crt/Scrt1.c
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/crt/Scrt1.c
diff --git a/crt/i386/Scrt1.s b/crt/i386/Scrt1.s
new file mode 100644
index 00000000..b0fbe104
--- /dev/null
+++ b/crt/i386/Scrt1.s
@@ -0,0 +1,24 @@
+.weak _init
+.weak _fini
+.text
+.global _start
+_start:
+ xorl %ebp,%ebp
+ popl %ecx
+ movl %esp,%eax
+ andl $-16,%esp
+ pushl %esp
+ pushl %esp
+ pushl %edx
+ call 1f
+1: addl $_GLOBAL_OFFSET_TABLE_,(%esp)
+ pop %ebx
+ call 1f
+1: addl $[_fini-.],(%esp)
+ call 1f
+1: addl $[_init-.],(%esp)
+ pushl %eax
+ pushl %ecx
+ pushl main@GOT(%ebx)
+ call __libc_start_main@plt
+1: jmp 1b