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authorEric Andersen <andersen@codepoet.org>2001-01-15 13:28:58 +0000
committerEric Andersen <andersen@codepoet.org>2001-01-15 13:28:58 +0000
commit0a3e7b0f16865e89a8ee8dc1761e2658338559f8 (patch)
tree23592eb91c384bf4ee1327e05e433aef17d2dc09
parent12e006e50e0f08ba12eaaacfb91553401d114ad1 (diff)
USe the name crt0.o, and cp it to $(TOPDIR)/libcrt0.o
-rw-r--r--libc/sysdeps/linux/arm/Makefile12
-rw-r--r--libc/sysdeps/linux/arm/crt0.S66
2 files changed, 76 insertions, 2 deletions
diff --git a/libc/sysdeps/linux/arm/Makefile b/libc/sysdeps/linux/arm/Makefile
index 7d901b769..a75e47715 100644
--- a/libc/sysdeps/linux/arm/Makefile
+++ b/libc/sysdeps/linux/arm/Makefile
@@ -25,7 +25,10 @@ include $(TOPDIR)Rules.mak
LIBC=$(TOPDIR)libc.a
ASFLAGS=$(CFLAGS)
-SSRC=_start.S longjmp.S setjmp.S
+CRT0=_start.S
+CRT0_OBJ=$(patsubst %.S,%.o, $(CRT0))
+
+SSRC=longjmp.S setjmp.S
SOBJS=$(patsubst %.S,%.o, $(SSRC))
CSRC=fork.c vfork.c
@@ -34,13 +37,18 @@ COBJS=$(patsubst %.c,%.o, $(CSRC))
OBJS=$(SOBJS) $(MOBJ) $(COBJS)
-all: $(OBJS) $(LIBC)
+all: $(OBJS) $(CRT0_OBJ) $(LIBC)
$(LIBC): ar-target
ar-target: $(OBJS)
$(AR) $(ARFLAGS) $(LIBC) $(OBJS)
+$(CRT0_OBJ): %.o : %.S
+ $(CC) $(CFLAGS) -c $< -o $@
+ $(STRIPTOOL) -x -R .note -R .comment $*.o
+ cp $*.o $(TOPDIR)/libcrt0.o
+
$(SOBJS): %.o : %.S
$(CC) $(CFLAGS) -c $< -o $@
$(STRIPTOOL) -x -R .note -R .comment $*.o
diff --git a/libc/sysdeps/linux/arm/crt0.S b/libc/sysdeps/linux/arm/crt0.S
new file mode 100644
index 000000000..3944bd34c
--- /dev/null
+++ b/libc/sysdeps/linux/arm/crt0.S
@@ -0,0 +1,66 @@
+/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB. If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+
+#define BASEREG r9
+
+@ r0 = argc
+@ r1 = argv
+@ r2 = envp
+@ sl = data segment
+
+
+
+ .text
+ .align 2
+ .global _start, exit, main
+ .type _start,%function
+
+.text
+_start:
+ @ adjust the data sgement base pointer
+ ldr r3,=__data_start
+ sub sl,sl,r3
+ mov BASEREG,sl
+
+ ldr r3, .L3
+ str r2,[BASEREG,r3]
+ ldr r0,[sp, #0]
+ ldr r1,[sp, #4]
+ ldr r2,[sp, #8]
+ bl main
+ ldr r0,=0
+ bl exit
+
+
+.L3: .word environ
+
+
+ .data
+ .align 2
+ .global __errno, __environ
+
+__environ: .long 0
+.weak environ
+environ = __environ
+
+__errno: .long 0
+.weak errno
+errno = __errno
+
+