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rdbg_cpu_asm.S @ 4caeb10

4.104.114.84.95

Last change on this file since 4caeb10 was 4caeb10, checked in by Ralf Corsepius <ralf.corsepius@…>, on 04/01/04 at 10:17:32

2004-04-01 Ralf Corsepius <ralf_corsepius@…>

File size: 1.3 KB

Line
1	/* cpu_asm.s
2	*
3	* This file contains all assembly code for the Intel i386 implementation
4	* of RDBG.
5	*
6	* $Id$
7	*
8	*/
9
10	#include <rtems/asm.h>
11
12	BEGIN_CODE
13
14	/*
15	* void copyback_data_cache_and_invalidate_instr_cache(addr, size)
16	*
17	* This routine performs a copy of the data cache
18	* and invalidate the instruction cache
19	*/
20
21	.p2align 1
22	PUBLIC (copyback_data_cache_and_invalidate_instr_cache)
23
24	SYM (copyback_data_cache_and_invalidate_instr_cache):
25	wbinvd
26	ret
27
28
29
30	/*
31	* void enterRdbg(void)
32	*
33	* This function perform a call to the exception 19
34	* It is used :
35	* 1 - in the user code, to simulate a Breakpoint.
36	* (with justSaveContext = 0)
37	* 2 - in the RDBG code, to push a ctx in the list.
38	* (with justSaveContext = 1)
39	*
40	* In most of case, it will be use as described in 1.
41	* The 2nd possibility will be used by RDBG to obtain
42	* its own ctx
43	*/
44
45	PUBLIC (enterRdbg)
46
47	SYM (enterRdbg):
48	int $50
49	ret
50
51
52	/*
53	* void rtems_exception_prologue_50(void)
54	*
55	* Exception 50 is used to enter Rdbg
56	*
57	*/
58
59	.p2align 4
60
61	PUBLIC (rtems_exception_prologue_50)
62	PUBLIC (_Exception_Handler)
63
64	SYM (rtems_exception_prologue_50):
65	pushl $ 0
66	pushl $ 50
67	jmp SYM(_Exception_Handler) ;
68
69
70	END_CODE
71
72	END

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