nand-ecoscentric: packages/hal/mips/arch/current/src/mips-stub.c annotate

annotate packages/hal/mips/arch/current/src/mips-stub.c @ 3403:8c8767bb9a62 default tip

devs/nand/micron_mt29: Remove defunct references (in comments) to mt29f2g08_oob_ecc.

author	Ross Younger <wry@ecoscentric.com>
date	Sun, 18 Jan 2015 17:59:01 +1300
parents	74dbf4c3f2e1
children

rev	line source
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	1 //========================================================================
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	2 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	3 // mips-stub.h
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	4 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	5 // Helper functions for stub, generic to all MIPS processors
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	6 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	7 //========================================================================
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	8 // ####ECOSGPLCOPYRIGHTBEGIN####
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	9 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	10 // This file is part of eCos, the Embedded Configurable Operating System.
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 151 diff changeset	12 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	13 // eCos is free software; you can redistribute it and/or modify it under
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	14 // the terms of the GNU General Public License as published by the Free
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	15 // Software Foundation; either version 2 or (at your option) any later
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	16 // version.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 151 diff changeset	17 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	18 // eCos is distributed in the hope that it will be useful, but WITHOUT
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	21 // for more details.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 151 diff changeset	22 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	23 // You should have received a copy of the GNU General Public License
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 151 diff changeset	26 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	27 // As a special exception, if other files instantiate templates or use
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	28 // macros or inline functions from this file, or you compile this file
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	29 // and link it with other works to produce a work based on this file,
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	30 // this file does not by itself cause the resulting work to be covered by
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	31 // the GNU General Public License. However the source code for this file
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	32 // must still be made available in accordance with section (3) of the GNU
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	33 // General Public License v2.
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 151 diff changeset	34 //
2729 74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	35 // This exception does not invalidate any other reasons why a work based
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	36 // on this file might be covered by the GNU General Public License.
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	37 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text. jlarmour parents: 210 diff changeset	38 // ####ECOSGPLCOPYRIGHTEND####
64 c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	39 //========================================================================
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	40 //#####DESCRIPTIONBEGIN####
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	41 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	42 // Author(s): Red Hat, nickg
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	43 // Contributors: Red Hat, nickg
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	44 // Date: 1998-06-08
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	45 // Purpose:
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	46 // Description: Helper functions for stub, generic to all MIPS processors
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	47 // Usage:
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	48 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	49 //####DESCRIPTIONEND####
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	50 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	51 //========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	52
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	53 #include <stddef.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	54
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	55 #include <pkgconf/hal.h>
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	56
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 115 diff changeset	57 #ifdef CYGPKG_REDBOOT
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 115 diff changeset	58 #include <pkgconf/redboot.h>
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 115 diff changeset	59 #endif
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 115 diff changeset	60
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	61 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	62
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	63 #include <cyg/hal/hal_stub.h>
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	64
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	65 #define CYGARC_HAL_COMMON_EXPORT_CPU_MACROS
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	66 #include <cyg/hal/mips-regs.h>
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	67
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	68 #include <cyg/hal/hal_arch.h>
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 115 diff changeset	69 #include <cyg/hal/hal_intr.h>
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	70 #include <cyg/hal/mips_opcode.h>
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	71
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	72 typedef unsigned long t_inst;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	73
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	74 /*----------------------------------------------------------------------
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	75 * Asynchronous interrupt support
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	76 */
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	77
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	78 static struct
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	79 {
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	80 t_inst *targetAddr;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	81 t_inst savedInstr;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	82 } asyncBuffer;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	83
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	84 /* Called to asynchronously interrupt a running program.
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	85 Must be passed address of instruction interrupted.
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	86 This is typically called in response to a debug port
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	87 receive interrupt.
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	88 */
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	89
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	90 void
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	91 install_async_breakpoint(void *epc)
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	92 {
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	93 long gp_save;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	94
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	95 /* This may be called from a separately linked program,
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	96 so we need to save and restore the incoming gp register
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	97 and setup our stub local gp register.
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	98 Alternatively, we could skip this foolishness if we
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	99 compiled libstub with "-G 0". */
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	100
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	101 __asm__ volatile ( "move %0,$28\n"
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	102 ".extern _gp\n"
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	103 "la $28,_gp\n"
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	104 : "=r" (gp_save) );
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	105
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	106 asyncBuffer.targetAddr = epc;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	107 asyncBuffer.savedInstr = (t_inst )epc;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	108 (t_inst )epc = (t_inst )_breakinst;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	109 __instruction_cache(CACHE_FLUSH);
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	110 __data_cache(CACHE_FLUSH);
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	111
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	112 __asm__ volatile ( "move $28,%0\n" :: "r"(gp_save) );
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	113 }
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	114
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	115 /--------------------------------------------------------------------/
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	116 /* Given a trap value TRAP, return the corresponding signal. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	117
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	118 int __computeSignal (unsigned int trap_number)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	119 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	120 switch (trap_number)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	121 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	122 case EXC_INT:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	123 /* External interrupt */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	124 return SIGINT;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	125
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	126 case EXC_RI:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	127 /* Reserved instruction */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	128 case EXC_CPU:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	129 /* Coprocessor unusable */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	130 return SIGILL;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	131
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	132 case EXC_BP:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	133 /* Break point */
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	134 if (asyncBuffer.targetAddr != NULL)
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	135 {
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	136 /* BP installed by serial driver to stop running program */
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	137 *asyncBuffer.targetAddr = asyncBuffer.savedInstr;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	138 __instruction_cache(CACHE_FLUSH);
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	139 __data_cache(CACHE_FLUSH);
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	140 asyncBuffer.targetAddr = NULL;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	141 return SIGINT;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	142 }
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	143 return SIGTRAP;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	144
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	145 case EXC_OVF:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	146 /* Arithmetic overflow */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	147 case EXC_TRAP:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	148 /* Trap exception */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	149 case EXC_FPE:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	150 /* Floating Point Exception */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	151 return SIGFPE;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	152
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	153 case EXC_IBE:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	154 /* Bus error (Ifetch) */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	155 case EXC_DBE:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	156 /* Bus error (data load or store) */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	157 return SIGBUS;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	158
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	159 case EXC_MOD:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	160 /* TLB modification exception */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	161 case EXC_TLBL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	162 /* TLB miss (Load or Ifetch) */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	163 case EXC_TLBS:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	164 /* TLB miss (Store) */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	165 case EXC_ADEL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	166 /* Address error (Load or Ifetch) */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	167 case EXC_ADES:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	168 /* Address error (Store) */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	169 return SIGSEGV;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	170
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	171 case EXC_SYS:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	172 /* System call */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	173 return SIGSYS;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	174
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	175 default:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	176 return SIGTERM;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	177 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	178 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	179
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	180 /* Return the trap number corresponding to the last-taken trap. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	181
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	182 int __get_trap_number (void)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	183 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	184 return (get_register (CAUSE) & CAUSE_EXCMASK) >> CAUSE_EXCSHIFT;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	185 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	186
151 25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 115 diff changeset	187 #if defined(CYGSEM_REDBOOT_BSP_SYSCALLS)
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 115 diff changeset	188 int __is_bsp_syscall(void)
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 115 diff changeset	189 {
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 115 diff changeset	190 return __get_trap_number() == EXC_SYS;
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 115 diff changeset	191 }
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 115 diff changeset	192 #endif
25e238959bae Merge from eCos master repository on 2001-02-12-23:44:24-GMT jlarmour parents: 115 diff changeset	193
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	194 /* Set the currently-saved pc register value to PC. This also updates NPC
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	195 as needed. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	196
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	197 void set_pc (target_register_t pc)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	198 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	199 put_register (PC, pc);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	200 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	201
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	202
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	203 /*----------------------------------------------------------------------
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	204 * Single-step support
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	205 */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	206
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	207 /* Saved instruction data for single step support. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	208
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	209 static struct
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	210 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	211 t_inst *targetAddr;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	212 t_inst savedInstr;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	213 } instrBuffer;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	214
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	215
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	216 /* Set things up so that the next user resume will execute one instruction.
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	217 This may be done by setting breakpoints or setting a single step flag
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	218 in the saved user registers, for example. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	219
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	220 void __single_step (void)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	221 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	222 InstFmt inst;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	223 t_inst pc = (t_inst ) get_register (PC);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	224
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	225 instrBuffer.targetAddr = pc + 1; /* set default */
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	226
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	227 inst.word = pc; / read the next instruction */
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	228
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	229 //diag_printf("pc %08x %08x\n",pc,inst.word);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	230
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	231 switch (inst.RType.op) { /* override default if branch */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	232 case OP_SPECIAL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	233 switch (inst.RType.func) {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	234 case OP_JR:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	235 case OP_JALR:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	236 instrBuffer.targetAddr = (t_inst *) get_register (inst.RType.rs);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	237 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	238 };
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	239 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	240
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	241 case OP_REGIMM:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	242 switch (inst.IType.rt) {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	243 case OP_BLTZ:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	244 case OP_BLTZL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	245 case OP_BLTZAL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	246 case OP_BLTZALL:
26 4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	247 if ((int)get_register (inst.IType.rs) < 0 )
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	248 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	249 (t_inst *)(((signed short)inst.IType.imm<<2)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	250 + (get_register (PC) + 4));
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	251 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	252 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	253 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	254 case OP_BGEZ:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	255 case OP_BGEZL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	256 case OP_BGEZAL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	257 case OP_BGEZALL:
26 4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	258 if ((int)get_register (inst.IType.rs) >= 0 )
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	259 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	260 (t_inst *)(((signed short)inst.IType.imm<<2)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	261 + (get_register (PC) + 4));
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	262 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	263 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	264 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	265 };
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	266 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	267
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	268 case OP_J:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	269 case OP_JAL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	270 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	271 (t_inst *)((inst.JType.target<<2)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	272 + ((get_register (PC) + 4)&0xf0000000));
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	273 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	274
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	275 case OP_BEQ:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	276 case OP_BEQL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	277 if (get_register (inst.IType.rs) == get_register (inst.IType.rt))
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	278 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	279 (t_inst *)(((signed short)inst.IType.imm<<2)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	280 + (get_register (PC) + 4));
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	281 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	282 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	283 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	284 case OP_BNE:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	285 case OP_BNEL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	286 if (get_register (inst.IType.rs) != get_register (inst.IType.rt))
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	287 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	288 (t_inst *)(((signed short)inst.IType.imm<<2)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	289 + (get_register (PC) + 4));
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	290 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	291 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	292 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	293 case OP_BLEZ:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	294 case OP_BLEZL:
26 4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	295 if ((int)get_register (inst.IType.rs) <= 0)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	296 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	297 (t_inst *)(((signed short)inst.IType.imm<<2) + (get_register (PC) + 4));
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	298 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	299 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	300 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	301 case OP_BGTZ:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	302 case OP_BGTZL:
26 4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	303 if ((int)get_register (inst.IType.rs) > 0)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	304 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	305 (t_inst *)(((signed short)inst.IType.imm<<2) + (get_register (PC) + 4));
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	306 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	307 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	308 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	309
26 4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	310 #ifdef CYGHWR_HAL_MIPS_FPU
4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	311
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	312 case OP_COP1:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	313 if (inst.RType.rs == OP_BC)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	314 switch (inst.RType.rt) {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	315 case COPz_BCF:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	316 case COPz_BCFL:
26 4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	317 if (get_register (FCR31) & FCR31_C)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	318 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	319 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	320 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	321 (t_inst *)(((signed short)inst.IType.imm<<2)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	322 + (get_register (PC) + 4));
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	323 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	324 case COPz_BCT:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	325 case COPz_BCTL:
26 4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	326 if (get_register (FCR31) & FCR31_C)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	327 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	328 (t_inst *)(((signed short)inst.IType.imm<<2)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	329 + (get_register (PC) + 4));
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	330 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	331 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	332 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	333 };
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	334 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	335 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	336
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	337 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	338 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	339
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	340
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	341 /* Clear the single-step state. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	342
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	343 void __clear_single_step (void)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	344 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	345 //diag_printf("clear_ss ta %08x\n",instrBuffer.targetAddr);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	346 if (instrBuffer.targetAddr != NULL)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	347 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	348 *instrBuffer.targetAddr = instrBuffer.savedInstr;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	349 instrBuffer.targetAddr = NULL;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	350 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	351 instrBuffer.savedInstr = NOP_INSTR;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	352 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	353
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	354
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	355 void __install_breakpoints ()
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	356 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	357 //diag_printf("install_bpt ta %08x\n",instrBuffer.targetAddr);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	358 if (instrBuffer.targetAddr != NULL)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	359 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	360 instrBuffer.savedInstr = *instrBuffer.targetAddr;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	361 *instrBuffer.targetAddr = __break_opcode ();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	362 //diag_printf("ta %08x si %08x *ta %08x\n",
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	363 // instrBuffer.targetAddr,instrBuffer.savedInstr,*instrBuffer.targetAddr);
8 ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	364
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	365 /* Ensure that the planted breakpoint makes it out to memory and
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	366 is subsequently loaded into the instruction cache.
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	367 */
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	368 __data_cache (CACHE_FLUSH) ;
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	369 __instruction_cache (CACHE_FLUSH) ;
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	370 }
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 66 diff changeset	371
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 66 diff changeset	372 /* Install the breakpoints in the breakpoint list */
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 66 diff changeset	373 __install_breakpoint_list();
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	374 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	375
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	376 void __clear_breakpoints (void)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	377 {
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 66 diff changeset	378 __clear_breakpoint_list();
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	379 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	380
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	381
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	382 /* If the breakpoint we hit is in the breakpoint() instruction, return a
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	383 non-zero value. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	384
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	385 int
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	386 __is_breakpoint_function ()
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	387 {
115 6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST jlarmour parents: 112 diff changeset	388 return get_register (PC) == (target_register_t)(unsigned long)&_breakinst;
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	389 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	390
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	391
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	392 /* Skip the current instruction. Since this is only called by the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	393 stub when the PC points to a breakpoint or trap instruction,
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	394 we can safely just skip 4. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	395
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	396 void __skipinst (void)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	397 {
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	398 put_register (PC, get_register (PC) + 4);
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	399 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	400
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	401 #endif // CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS

Mercurial > nand-ecoscentric

annotate packages/hal/mips/arch/current/src/mips-stub.c @ 3403:8c8767bb9a62 default tip