source: mainline/uspace/lib/c/arch/mips32/src/entryjmp.s@ bae7bdc

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since bae7bdc was bae7bdc, checked in by Jiri Svoboda <jiri@…>, 14 years ago

Move functions for jumping to the entry point from loader to the C library,
so they are close to the other side of the fence (i.e. to the entry points).

  • Property mode set to 100644
File size: 1.8 KB
Line 
1#
2# Copyright (c) 2008 Jiri Svoboda
3# All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions
7# are met:
8#
9# - Redistributions of source code must retain the above copyright
10# notice, this list of conditions and the following disclaimer.
11# - Redistributions in binary form must reproduce the above copyright
12# notice, this list of conditions and the following disclaimer in the
13# documentation and/or other materials provided with the distribution.
14# - The name of the author may not be used to endorse or promote products
15# derived from this software without specific prior written permission.
16#
17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27#
28
29.text
30.section .text
31.global entry_point_jmp
32.set noreorder
33
34## void entry_point_jmp(void *entry_point, void *pcb);
35#
36# $a0 (=$4) contains entry_point
37# $a1 (=$5) contains pcb
38#
39# Jump to program entry point
40.ent entry_point_jmp
41entry_point_jmp:
42 # tmp := entry_point
43 move $25, $a0
44
45 # Pass pcb to the entry point in $a0
46 move $a0, $a1
47 jr $25
48 nop
49.end
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