ecos: packages/hal/sh/arch/current/src/hal

annotate packages/hal/sh/arch/current/src/hal_misc.c @ 1423:440ddbf97b39

2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> * cdl/hal_sh.cdl: CYGHWR_HAL_SH_FPU_REGS is only needed if there's an FPU. * include/hal_var_bank.h (HAL_THREAD_INIT_CONTEXT_FPU): Use FPSCR init value from HAL register definitions. 2003-09-19 John Dallaway <jld@ecoscentric.com> * cdl/hal_sh.cdl: Specify default CDL values for sh4_202_md target. 2003-09-11 Nick Garnett <nickg@ecoscentric.com> * include/hal_var_bank.h (HAL_THREAD_INIT_CONTEXT_FPU): Changed initial value of fpscr to do round-to-nearest rather than round-to-zero. 2003-09-08 Nick Garnett <nickg@ecoscentric.com> * src/vectors.S (cyg_hal_default_exception_vsr): Added code to switch to interrupt stack when fielding exceptions from RedBoot or some other ROM monitor. Without this we get potential stack overflows when debugging via the network. 2003-09-05 Nick Garnett <nickg@ecoscentric.com> * include/hal_arch.h: * include/hal_var_bank.h: * include/hal_var_bank.inc: * src/context.S: Added support for floating point state save and restore and GDB * src/hal_misc.c (hal_delay_us): Fixed implementation of this routine so that it actually works. * src/hal_syscall.c: Added support for all supportable syscalls. * src/sh_stub.c: Added check in __is_bsp_syscall() for trap 34 traps using the TRA register. * src/vectors.S: Set startup stack size to the same as the interrupt stack size. In some configurations of RedBoot the previous value was too small. * include/sh_stub.h: Fixed HAL_STUB_PLATFORM_STUBS_FIXUP() to only rewind for a breakpoint. Traps are not rewound. * cdl/hal_sh.cdl: Added option for SH architecture FP register count.

author	nickg
date	Fri, 05 Dec 2003 17:06:23 +0000
parents	d2c90368aeef
children	74dbf4c3f2e1

rev	line source
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	1 //==========================================================================
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	2 //
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	3 // hal_misc.c
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	4 //
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	5 // HAL miscellaneous functions
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	6 //
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	7 //==========================================================================
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	8 //####ECOSGPLCOPYRIGHTBEGIN####
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	9 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	10 // This file is part of eCos, the Embedded Configurable Operating System.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
1423 440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	12 // Copyright (C) 2003 Nick Garnett
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	13 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	14 // eCos is free software; you can redistribute it and/or modify it under
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	15 // the terms of the GNU General Public License as published by the Free
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	16 // Software Foundation; either version 2 or (at your option) any later version.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	17 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	18 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	19 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	21 // for more details.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	22 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	23 // You should have received a copy of the GNU General Public License along
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	24 // with eCos; if not, write to the Free Software Foundation, Inc.,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	25 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	26 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	27 // As a special exception, if other files instantiate templates or use macros
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	28 // or inline functions from this file, or you compile this file and link it
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	29 // with other works to produce a work based on this file, this file does not
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	30 // by itself cause the resulting work to be covered by the GNU General Public
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	31 // License. However the source code for this file must still be made available
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	32 // in accordance with section (3) of the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	33 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	34 // This exception does not invalidate any other reasons why a work based on
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	35 // this file might be covered by the GNU General Public License.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	36 //
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	37 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
210 d2c90368aeef Merge from eCos master repository on 2002-05-23-21:39:14-BST jlarmour parents: 208 diff changeset	38 // at http://sources.redhat.com/ecos/ecos-license/
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	39 // -------------------------------------------
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	40 //####ECOSGPLCOPYRIGHTEND####
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	41 //==========================================================================
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	42 //#####DESCRIPTIONBEGIN####
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	43 //
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	44 // Author(s): jskov
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	45 // Contributors: jskov, jlarmour, nickg
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	46 // Date: 1999-04-03
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	47 // Purpose: HAL miscellaneous functions
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	48 // Description: This file contains miscellaneous functions provided by the
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	49 // HAL.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	50 //
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	51 //####DESCRIPTIONEND####
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	52 //
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	53 //===========================================================================
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	54
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	55 #include <pkgconf/hal.h>
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	56
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	57 #include <cyg/infra/cyg_type.h>
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	58 #include <cyg/infra/cyg_trac.h> // tracing macros
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	59 #include <cyg/infra/cyg_ass.h> // assertion macros
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	60 #include <cyg/infra/diag.h> // diag_printf
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	61
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	62 #include <cyg/hal/hal_arch.h> // HAL header
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	63 #include <cyg/hal/hal_cache.h> // HAL cache
130 eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 128 diff changeset	64 #include <cyg/hal/hal_intr.h> // HAL interrupts/exceptions
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	65
134 d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	66 #include <cyg/hal/sh_regs.h> // timer registers
d2f49caf9e38 Merge from eCos master repository on 2000-11-03-09:00:49-GMT jlarmour parents: 130 diff changeset	67
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	68 //---------------------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	69 // Functions used during initialization.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	70
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	71 #ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	72 cyg_bool cyg_hal_stop_constructors;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	73 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	74
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	75 typedef void (*pfunc) (void);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	76 extern pfunc __CTOR_LIST__[];
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	77 extern pfunc __CTOR_END__[];
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	78
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	79 void
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	80 cyg_hal_invoke_constructors (void)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	81 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	82 #ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	83 static pfunc *p = &__CTOR_END__[-1];
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	84
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	85 cyg_hal_stop_constructors = 0;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	86 for (; p >= __CTOR_LIST__; p--) {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	87 (*p) ();
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	88 if (cyg_hal_stop_constructors) {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	89 p--;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	90 break;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	91 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	92 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	93 #else
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	94 pfunc *p;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	95
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	96 for (p = &__CTOR_END__[-1]; p >= __CTOR_LIST__; p--)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	97 (*p) ();
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	98 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	99 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	100
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	101 //---------------------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	102 // First level C exception handler.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	103
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	104 externC void __handle_exception (void);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	105
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	106 externC HAL_SavedRegisters *_hal_registers;
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	107 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
130 eb9fd8c04db3 Merge from eCos master repository on 2000-10-23-17:01:37-BST jlarmour parents: 128 diff changeset	108 externC void* volatile __mem_fault_handler;
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	109 #endif
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	110
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	111 void
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	112 cyg_hal_exception_handler(HAL_SavedRegisters *regs)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	113 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	114 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	115 if (__mem_fault_handler &&
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	116 ((regs->event >= _CYGNUM_HAL_VECTOR_FIRST_MEM_FAULT) &&
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	117 (regs->event <= _CYGNUM_HAL_VECTOR_LAST_MEM_FAULT))) {
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	118 regs->pc = (unsigned long)__mem_fault_handler;
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	119 return; // Caught an exception inside stubs
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	120 }
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	121
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	122 // Set the pointer to the registers of the current exception
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	123 // context. At entry the GDB stub will expand the
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	124 // HAL_SavedRegisters structure into a (bigger) register array.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	125 _hal_registers = regs;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	126
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	127 __handle_exception();
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	128
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	129 #elif defined(CYGFUN_HAL_COMMON_KERNEL_SUPPORT) && \
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	130 defined(CYGPKG_HAL_EXCEPTIONS)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	131
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	132 cyg_hal_deliver_exception( regs->event, (CYG_ADDRWORD)regs );
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	133
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	134 #else
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	135
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	136 CYG_FAIL("Exception!!!");
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	137
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	138 #endif
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	139
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	140 return;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	141 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	142
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	143 //---------------------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	144 // Default ISR
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	145 externC cyg_uint32
105 5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST jlarmour parents: 76 diff changeset	146 hal_arch_default_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data)
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	147 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	148 return 0;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	149 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	150
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	151 //--------------------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	152 // Determine the index of the ls bit of the supplied mask.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	153
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	154 cyg_uint32
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	155 hal_lsbit_index(cyg_uint32 mask)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	156 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	157 cyg_uint32 n = mask;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	158
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	159 static const signed char tab[64] =
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	160 { -1, 0, 1, 12, 2, 6, 0, 13, 3, 0, 7, 0, 0, 0, 0, 14, 10,
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	161 4, 0, 0, 8, 0, 0, 25, 0, 0, 0, 0, 0, 21, 27 , 15, 31, 11,
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	162 5, 0, 0, 0, 0, 0, 9, 0, 0, 24, 0, 0 , 20, 26, 30, 0, 0, 0,
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	163 0, 23, 0, 19, 29, 0, 22, 18, 28, 17, 16, 0
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	164 };
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	165
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	166 n &= ~(n-1UL);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	167 n = (n<<16)-n;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	168 n = (n<<6)+n;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	169 n = (n<<4)+n;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	170
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	171 return tab[n>>26];
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	172 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	173
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	174 //--------------------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	175 // Determine the index of the ms bit of the supplied mask.
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	176
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	177 cyg_uint32
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	178 hal_msbit_index(cyg_uint32 mask)
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	179 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	180 cyg_uint32 x = mask;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	181 cyg_uint32 w;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	182
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	183 // Phase 1: make word with all ones from that one to the right
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	184 x \|= x >> 16;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	185 x \|= x >> 8;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	186 x \|= x >> 4;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	187 x \|= x >> 2;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	188 x \|= x >> 1;
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	189
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	190 // Phase 2: calculate number of "1" bits in the word
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	191 w = (x & 0x55555555) + ((x >> 1) & 0x55555555);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	192 w = (w & 0x33333333) + ((w >> 2) & 0x33333333);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	193 w = w + (w >> 4);
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	194 w = (w & 0x000F000F) + ((w >> 8) & 0x000F000F);
196 9b55e9c69693 Merge from eCos master repository on 2001-11-23-15:32:03-GMT jlarmour parents: 134 diff changeset	195 return (cyg_uint32)((w + (w >> 16)) & 0xFF) - 1;
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	196
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	197 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	198
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	199 //---------------------------------------------------------------------------
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	200 // Idle thread action
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	201
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	202 void
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	203 hal_idle_thread_action( cyg_uint32 count )
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	204 {
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	205 }
435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	206
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	207 #ifdef CYGHWR_SH_RTC_TIMER_IS_TMU
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	208 //---------------------------------------------------------------------------
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	209 // Low-level delay (in microseconds)
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	210
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	211 void
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	212 hal_delay_us(int usecs)
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	213 {
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	214 unsigned char _tstr; // Current clock control
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	215 volatile unsigned char tstr = (volatile unsigned char )CYGARC_REG_TSTR;
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	216 volatile unsigned long tcnt = (volatile unsigned long )CYGARC_REG_TCNT1;
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	217 volatile unsigned long tcor = (volatile unsigned long )CYGARC_REG_TCOR1;
1423 440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	218 volatile unsigned short tcr = (volatile unsigned short )CYGARC_REG_TCR1;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	219 unsigned long clocks_per_us = (((CYGHWR_HAL_SH_ONCHIP_PERIPHERAL_SPEED/1000000) +
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	220 (CYGHWR_HAL_SH_TMU_PRESCALE_0-1)) /
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	221 CYGHWR_HAL_SH_TMU_PRESCALE_0);
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	222 volatile int diff, diff2;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	223 volatile cyg_uint32 val1, val2;
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	224
1423 440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	225 *tcr = (( 4==CYGHWR_HAL_SH_TMU_PRESCALE_0) ? CYGARC_REG_TCR_TPSC_4 :
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	226 (16==CYGHWR_HAL_SH_TMU_PRESCALE_0) ? CYGARC_REG_TCR_TPSC_16:
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	227 (64==CYGHWR_HAL_SH_TMU_PRESCALE_0) ? CYGARC_REG_TCR_TPSC_64:
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	228 CYGARC_REG_TCR_TPSC_256);
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	229
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	230 *tcnt = 0x0FFFFFFF;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	231 *tcor = 0x0FFFFFFF;
440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	232
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	233 _tstr = *tstr;
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	234 *tstr \|= CYGARC_REG_TSTR_STR1; // Enable channel 1
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	235 while (usecs-- > 0) {
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	236 diff = 0;
1423 440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	237 val1 = *tcnt;
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	238 while (diff < clocks_per_us) {
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	239 while ((val2 = *tcnt) == val1) ;
1423 440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	240 diff2 = val1 - val2;
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	241 if (diff2 < 0) diff2 += *tcor;
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	242 diff += diff2;
1423 440ddbf97b39 2003-09-21 Jonathan Larmour <jifl@eCosCentric.com> nickg parents: 210 diff changeset	243 val1 = val2;
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	244 }
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	245 }
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	246 *tstr = _tstr; // Restore timer to previous state
02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	247 }
208 e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST jlarmour parents: 196 diff changeset	248 #endif
112 02ea4320376c Merge from eCos master repository on 2000-07-21-21:01:39-BST jlarmour parents: 105 diff changeset	249
105 5a0cc6c243a9 Merge from eCos master repository on 2000-06-30-08:18:49-BST jlarmour parents: 76 diff changeset	250 //---------------------------------------------------------------------------
76 435cced73e2f eCos v1.3.1 merged from eCos master repository on 2000-03-27-23:22:51-BST jlarmour parents: diff changeset	251 // End of hal_misc.c

Mercurial > ecos

annotate packages/hal/sh/arch/current/src/hal_misc.c @ 1423:440ddbf97b39