67 lines
1.8 KiB
ArmAsm
67 lines
1.8 KiB
ArmAsm
/*
|
|
* cfe_prestart.S -- startup file for MIPS running CFE.
|
|
* Derived from crt0.S.
|
|
*
|
|
* Copyright (c) 1995, 1996, 1997 Cygnus Support
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifdef __mips16
|
|
/* This file contains 32 bit assembly code. */
|
|
.set nomips16
|
|
#endif
|
|
|
|
#include "regs.S"
|
|
|
|
/* This is for referencing addresses that are not in the .sdata or
|
|
.sbss section under embedded-pic, or before we've set up gp. */
|
|
#ifdef __mips_embedded_pic
|
|
# ifdef __mips64
|
|
# define LA(t,x) la t,x-PICBASE ; daddu t,s0,t
|
|
# else
|
|
# define LA(t,x) la t,x-PICBASE ; addu t,s0,t
|
|
# endif
|
|
#else /* __mips_embedded_pic */
|
|
# define LA(t,x) la t,x
|
|
#endif /* __mips_embedded_pic */
|
|
|
|
.globl __cfe_handle
|
|
.globl __cfe_entrypt
|
|
|
|
.text
|
|
.align 2
|
|
|
|
.globl _prestart
|
|
.ent _prestart
|
|
_prestart:
|
|
.set noreorder
|
|
#ifdef __mips_embedded_pic
|
|
PICBASE = .+8
|
|
bal PICBASE
|
|
nop
|
|
move s0,$31
|
|
#endif
|
|
|
|
/* These are actually pointers, but they're guaranteed to be
|
|
in compatibility space and it's just easier to store them
|
|
as words ("unsigned int") than worry about the actual
|
|
pointer size of the runtime we're building. */
|
|
LA (v0, __cfe_handle)
|
|
sw a0, 0(v0)
|
|
LA (v0, __cfe_entrypt)
|
|
sw a2, 0(v0)
|
|
|
|
LA (v0, _start)
|
|
jr v0
|
|
nop
|
|
.end _prestart
|