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authorEric Andersen <andersen@codepoet.org>2002-05-10 08:28:15 +0000
committerEric Andersen <andersen@codepoet.org>2002-05-10 08:28:15 +0000
commitb5bbbc0f5f2c2c36c56249c7b2e305eb78cab7e3 (patch)
tree70acacdc76cb4cfdb2aa4072fc3535ff99594f81 /libc/sysdeps/linux/alpha/crt0.S
parent4a6cfe318094cc8b20e6e3003f417f8ab3563bb1 (diff)
First pass attempt at an alpha port
Diffstat (limited to 'libc/sysdeps/linux/alpha/crt0.S')
-rw-r--r--libc/sysdeps/linux/alpha/crt0.S72
1 files changed, 72 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/alpha/crt0.S b/libc/sysdeps/linux/alpha/crt0.S
new file mode 100644
index 000000000..a489622bf
--- /dev/null
+++ b/libc/sysdeps/linux/alpha/crt0.S
@@ -0,0 +1,72 @@
+/* Startup code for Alpha/ELF.
+ Copyright (C) 1993,1995,1996,1997,1998,2000,2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Richard Henderson <rth@tamu.edu>
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+
+ .text
+ .align 3
+ .globl _start
+ .ent _start, 0
+ .type _start,@function
+_start:
+ .frame $15, 0, $31
+ mov $31, $15
+ br $29, 1f
+1: ldgp $29, 0($29)
+ subq $30, 16, $30
+ .prologue 0
+
+ /* Load address of the user's main function. */
+ lda $16, main
+
+ ldl $17, 16($30) /* get argc */
+ lda $18, 24($30) /* get argv */
+
+#if 0
+ /* Load address of our own entry points to .fini and .init. */
+ lda $19, _init
+ lda $20, _fini
+
+ /* Store address of the shared library termination function. */
+ mov $0, $21
+
+ /* Provide the highest stack address to the user code. */
+ stq $30, 0($30)
+#endif
+
+ /* Call the user's main function, and exit with its value.
+ But let the libc call main. */
+ jsr $26, __uClibc_main
+
+ /* Die very horribly if exit returns. Call_pal hlt is callable from
+ kernel mode only; this will result in an illegal instruction trap. */
+ call_pal 0
+ .end _start
+
+/* For ECOFF backwards compatibility. */
+.weak __start;
+ __start = _start
+
+/* Define a symbol for the first piece of initialized data. */
+ .data
+ .globl __data_start
+__data_start:
+ .long 0
+ .weak data_start
+ data_start = __data_start