libc/libgloss/ft32/crt0.S

74 lines
1.5 KiB
ArmAsm

/* crt0.S -- startup file for FT32
*
* Copyright (c) 2015 FTDI
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
.globl __start
.weak _start
.text
.type __start,@function
__start:
_start:
jmp truestart
jmp truestart
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truestart:
ldk.l $sp, 0xfffc /* set the top of stack */
ldk.l $fp,0 /* zero fp to allow unwinders to stop */
/* Set argc and argv to zero */
ldk.l $r0, 0
ldk.l $r1, 0
sub.l $sp,$sp,24 # room for the args to main
call main
call exit
.Lend:
.size __start,(.Lend-__start)