flash_v2: packages/hal/mips/arch/current/src/mips-stub.c annotate

annotate packages/hal/mips/arch/current/src/mips-stub.c @ 64:c38311975d4f ecos-sw-2000-01-28

Merge from eCos master repository on 2000-01-28-04:28:11-GMT

author	jlarmour
date	Fri, 28 Jan 2000 04:59:39 +0000
parents	a0774359f013
children	bf00f99aec69

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 //========================================================================
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	8 //####COPYRIGHTBEGIN####
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	9 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	10 // -------------------------------------------
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	11 // The contents of this file are subject to the Red Hat eCos Public License
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	12 // Version 1.0 (the "License"); you may not use this file except in
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	13 // compliance with the License. You may obtain a copy of the License at
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	14 // http://sourceware.cygnus.com/ecos
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	15 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	16 // Software distributed under the License is distributed on an
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	18 // License for the specific language governing rights and limitations under
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	19 // the License.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	20 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	21 // The Original Code is eCos - Embedded Configurable Operating System,
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	22 // released September 30, 1998.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	23 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	24 // The Initial Developer of the Original Code is Red Hat.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	25 // Portions created by Red Hat are
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	27 // All Rights Reserved.
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	28 // -------------------------------------------
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	29 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	30 //####COPYRIGHTEND####
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	31 //========================================================================
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	32 //#####DESCRIPTIONBEGIN####
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	33 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	34 // Author(s): Red Hat, nickg
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	35 // Contributors: Red Hat, nickg
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	36 // Date: 1998-06-08
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	37 // Purpose:
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	38 // 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	39 // Usage:
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	40 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	41 //####DESCRIPTIONEND####
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	42 //
c38311975d4f Merge from eCos master repository on 2000-01-28-04:28:11-GMT jlarmour parents: 50 diff changeset	43 //========================================================================
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	44
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	45 #include <stddef.h>
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	46
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	47 #include <pkgconf/hal.h>
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	48
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	49 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	50
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	51 #include <cyg/hal/hal_stub.h>
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	52
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	53 #define CYGARC_HAL_COMMON_EXPORT_CPU_MACROS
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	54 #include <cyg/hal/mips-regs.h>
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	55
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	56 #include <cyg/hal/hal_arch.h>
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	57 #include <cyg/hal/mips_opcode.h>
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	58
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	59 typedef unsigned long t_inst;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	60
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	61 /*----------------------------------------------------------------------
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	62 * Asynchronous interrupt support
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	63 */
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	64
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	65 static struct
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	66 {
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	67 t_inst *targetAddr;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	68 t_inst savedInstr;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	69 } asyncBuffer;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	70
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	71 /* 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	72 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	73 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	74 receive interrupt.
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	75 */
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 void
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	78 install_async_breakpoint(void *epc)
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 long gp_save;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	81
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	82 /* 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	83 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	84 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	85 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	86 compiled libstub with "-G 0". */
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	87
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	88 __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	89 ".extern _gp\n"
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	90 "la $28,_gp\n"
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	91 : "=r" (gp_save) );
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 asyncBuffer.targetAddr = epc;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	94 asyncBuffer.savedInstr = (t_inst )epc;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	95 (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	96 __instruction_cache(CACHE_FLUSH);
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	97 __data_cache(CACHE_FLUSH);
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	98
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	99 __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	100 }
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	101
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	102 /--------------------------------------------------------------------/
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	103 /* Given a trap value TRAP, return the corresponding signal. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	104
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	105 int __computeSignal (unsigned int trap_number)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	106 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	107 switch (trap_number)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	108 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	109 case EXC_INT:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	110 /* External interrupt */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	111 return SIGINT;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	112
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	113 case EXC_RI:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	114 /* Reserved instruction */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	115 case EXC_CPU:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	116 /* Coprocessor unusable */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	117 return SIGILL;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	118
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	119 case EXC_BP:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	120 /* Break point */
10 d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	121 if (asyncBuffer.targetAddr != NULL)
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	122 {
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	123 /* 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	124 *asyncBuffer.targetAddr = asyncBuffer.savedInstr;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	125 __instruction_cache(CACHE_FLUSH);
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	126 __data_cache(CACHE_FLUSH);
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	127 asyncBuffer.targetAddr = NULL;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	128 return SIGINT;
d3fbcdfa1b2f Merge from eCos master repository on 1999-05-29-00:13:11-BST jlarmour parents: 8 diff changeset	129 }
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	130 return SIGTRAP;
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_OVF:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	133 /* Arithmetic overflow */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	134 case EXC_TRAP:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	135 /* Trap exception */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	136 case EXC_FPE:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	137 /* Floating Point Exception */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	138 return SIGFPE;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	139
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	140 case EXC_IBE:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	141 /* Bus error (Ifetch) */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	142 case EXC_DBE:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	143 /* Bus error (data load or store) */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	144 return SIGBUS;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	145
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	146 case EXC_MOD:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	147 /* TLB modification exception */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	148 case EXC_TLBL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	149 /* TLB miss (Load or Ifetch) */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	150 case EXC_TLBS:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	151 /* TLB miss (Store) */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	152 case EXC_ADEL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	153 /* Address error (Load or Ifetch) */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	154 case EXC_ADES:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	155 /* Address error (Store) */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	156 return SIGSEGV;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	157
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	158 case EXC_SYS:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	159 /* System call */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	160 return SIGSYS;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	161
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	162 default:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	163 return SIGTERM;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	164 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	165 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	166
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	167 /* Return the trap number corresponding to the last-taken trap. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	168
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	169 int __get_trap_number (void)
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 return (get_register (CAUSE) & CAUSE_EXCMASK) >> CAUSE_EXCSHIFT;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	172 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	173
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	174 /* 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	175 as needed. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	176
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	177 void set_pc (target_register_t pc)
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 put_register (PC, pc);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	180 }
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
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 * Single-step support
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
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	187 /* Saved instruction data for single step support. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	188
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	189 static struct
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	190 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	191 t_inst *targetAddr;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	192 t_inst savedInstr;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	193 } instrBuffer;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	194
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	195
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	196 /* 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	197 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	198 in the saved user registers, for example. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	199
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	200 void __single_step (void)
0 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 InstFmt inst;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	203 t_inst pc = (t_inst ) get_register (PC);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	204
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	205 instrBuffer.targetAddr = pc + 1; /* set default */
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	206
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	207 inst.word = pc; / read the next instruction */
0 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 //diag_printf("pc %08x %08x\n",pc,inst.word);
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 switch (inst.RType.op) { /* override default if branch */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	212 case OP_SPECIAL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	213 switch (inst.RType.func) {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	214 case OP_JR:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	215 case OP_JALR:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	216 instrBuffer.targetAddr = (t_inst *) get_register (inst.RType.rs);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	217 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	218 };
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	219 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	220
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	221 case OP_REGIMM:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	222 switch (inst.IType.rt) {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	223 case OP_BLTZ:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	224 case OP_BLTZL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	225 case OP_BLTZAL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	226 case OP_BLTZALL:
26 4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	227 if ((int)get_register (inst.IType.rs) < 0 )
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	228 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	229 (t_inst *)(((signed short)inst.IType.imm<<2)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	230 + (get_register (PC) + 4));
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	231 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	232 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	233 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	234 case OP_BGEZ:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	235 case OP_BGEZL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	236 case OP_BGEZAL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	237 case OP_BGEZALL:
26 4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	238 if ((int)get_register (inst.IType.rs) >= 0 )
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	239 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	240 (t_inst *)(((signed short)inst.IType.imm<<2)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	241 + (get_register (PC) + 4));
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	242 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	243 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	244 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	245 };
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	246 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	247
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	248 case OP_J:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	249 case OP_JAL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	250 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	251 (t_inst *)((inst.JType.target<<2)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	252 + ((get_register (PC) + 4)&0xf0000000));
0 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
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	255 case OP_BEQ:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	256 case OP_BEQL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	257 if (get_register (inst.IType.rs) == get_register (inst.IType.rt))
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	258 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	259 (t_inst *)(((signed short)inst.IType.imm<<2)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	260 + (get_register (PC) + 4));
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	261 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	262 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	263 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	264 case OP_BNE:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	265 case OP_BNEL:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	266 if (get_register (inst.IType.rs) != get_register (inst.IType.rt))
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	267 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	268 (t_inst *)(((signed short)inst.IType.imm<<2)
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	269 + (get_register (PC) + 4));
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	270 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	271 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	272 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	273 case OP_BLEZ:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	274 case OP_BLEZL:
26 4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	275 if ((int)get_register (inst.IType.rs) <= 0)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	276 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	277 (t_inst *)(((signed short)inst.IType.imm<<2) + (get_register (PC) + 4));
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	278 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	279 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	280 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	281 case OP_BGTZ:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	282 case OP_BGTZL:
26 4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	283 if ((int)get_register (inst.IType.rs) > 0)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	284 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	285 (t_inst *)(((signed short)inst.IType.imm<<2) + (get_register (PC) + 4));
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	286 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	287 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	288 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	289
26 4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	290 #ifdef CYGHWR_HAL_MIPS_FPU
4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	291
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	292 case OP_COP1:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	293 if (inst.RType.rs == OP_BC)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	294 switch (inst.RType.rt) {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	295 case COPz_BCF:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	296 case COPz_BCFL:
26 4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	297 if (get_register (FCR31) & FCR31_C)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	298 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	299 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	300 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	301 (t_inst *)(((signed short)inst.IType.imm<<2)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	302 + (get_register (PC) + 4));
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	303 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	304 case COPz_BCT:
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	305 case COPz_BCTL:
26 4741a3c3496a Merge from eCos master repository on 1999-07-23-05:47:06-BST jlarmour parents: 10 diff changeset	306 if (get_register (FCR31) & FCR31_C)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	307 instrBuffer.targetAddr =
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	308 (t_inst *)(((signed short)inst.IType.imm<<2)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	309 + (get_register (PC) + 4));
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	310 else
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	311 instrBuffer.targetAddr = (t_inst *)(get_register (PC) + 8);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	312 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	313 };
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	314 break;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	315 #endif
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	316
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	317 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	318 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	319
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	320
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	321 /* Clear the single-step state. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	322
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	323 void __clear_single_step (void)
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	324 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	325 //diag_printf("clear_ss ta %08x\n",instrBuffer.targetAddr);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	326 if (instrBuffer.targetAddr != NULL)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	327 {
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	328 *instrBuffer.targetAddr = instrBuffer.savedInstr;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	329 instrBuffer.targetAddr = NULL;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	330 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	331 instrBuffer.savedInstr = NOP_INSTR;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	332 }
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
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	335 void __install_breakpoints ()
0 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 //diag_printf("install_bpt ta %08x\n",instrBuffer.targetAddr);
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	338 if (instrBuffer.targetAddr != NULL)
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 instrBuffer.savedInstr = *instrBuffer.targetAddr;
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	341 *instrBuffer.targetAddr = __break_opcode ();
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	342 //diag_printf("ta %08x si %08x *ta %08x\n",
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	343 // 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	344
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	345 /* 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	346 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	347 */
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	348 __data_cache (CACHE_FLUSH) ;
ece80412419a Merge from eCos master repository on 1999-05-21-22:05:54-BST jlarmour parents: 2 diff changeset	349 __instruction_cache (CACHE_FLUSH) ;
0 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 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	352
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	353 void __clear_breakpoints (void)
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	354 {
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	355 }
443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	356
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	357
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	358 /* If the breakpoint we hit is in the breakpoint() instruction, return a
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	359 non-zero value. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	360
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	361 int
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	362 __is_breakpoint_function ()
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	363 {
50 a0774359f013 Merge from eCos master repository on 1999-11-02-17:02:15-GMT jlarmour parents: 26 diff changeset	364 return get_register (PC) == (target_register_t)(unsigned long)&CYG_LABEL_NAME(breakinst);
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	365 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	366
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	367
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	368 /* Skip the current instruction. Since this is only called by the
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	369 stub when the PC points to a breakpoint or trap instruction,
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	370 we can safely just skip 4. */
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	371
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	372 void __skipinst (void)
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	373 {
2 443894e2e912 Block commit of eCos version 1.2.1 jlarmour parents: 0 diff changeset	374 put_register (PC, get_register (PC) + 4);
0 3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	375 }
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	376
3111d98ba7b3 Initial commit of eCos version 1.1 jlarmour parents: diff changeset	377 #endif // CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS

Mercurial > flash_v2

annotate packages/hal/mips/arch/current/src/mips-stub.c @ 64:c38311975d4f ecos-sw-2000-01-28