diff options
Diffstat (limited to 'zpu/sw/ecos/repository/hal/zylin/arch/current/src/hal_misc.c')
| -rw-r--r-- | zpu/sw/ecos/repository/hal/zylin/arch/current/src/hal_misc.c | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/zpu/sw/ecos/repository/hal/zylin/arch/current/src/hal_misc.c b/zpu/sw/ecos/repository/hal/zylin/arch/current/src/hal_misc.c new file mode 100644 index 0000000..eea2465 --- /dev/null +++ b/zpu/sw/ecos/repository/hal/zylin/arch/current/src/hal_misc.c @@ -0,0 +1,177 @@ +/*==========================================================================
+//
+// hal_misc.c
+//
+// HAL miscellaneous functions
+//
+//==========================================================================
+//####ECOSGPLCOPYRIGHTBEGIN####
+// -------------------------------------------
+// This file is part of eCos, the Embedded Configurable Operating System.
+// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
+//
+// eCos is free software; you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free
+// Software Foundation; either version 2 or (at your option) any later version.
+//
+// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+// for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with eCos; if not, write to the Free Software Foundation, Inc.,
+// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or inline functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. However the source code for this file must still be made available
+// in accordance with section (3) of the GNU General Public License.
+//
+// This exception does not invalidate any other reasons why a work based on
+// this file might be covered by the GNU General Public License.
+//
+// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
+// at http://sources.redhat.com/ecos/ecos-license/
+// -------------------------------------------
+//####ECOSGPLCOPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s): nickg, gthomas
+// Contributors: nickg, gthomas
+// Date: 1999-02-20
+// Purpose: HAL miscellaneous functions
+// Description: This file contains miscellaneous functions provided by the
+// HAL.
+//
+//####DESCRIPTIONEND####
+//
+//=========================================================================*/
+
+#include <pkgconf/hal.h>
+#include <pkgconf/hal_zylin.h>
+#ifdef CYGPKG_KERNEL
+#include <pkgconf/kernel.h>
+#endif
+#ifdef CYGPKG_CYGMON
+#include <pkgconf/cygmon.h>
+#endif
+
+#include <cyg/infra/cyg_type.h>
+#include <cyg/infra/cyg_trac.h> // tracing macros
+#include <cyg/infra/cyg_ass.h> // assertion macros
+
+#include <cyg/hal/hal_arch.h> // HAL header
+#include <cyg/hal/hal_intr.h> // HAL header
+
+#include <cyg/hal/var_io.h>
+#include <cyg/hal/hal_io.h>
+
+externC void diag_printf(const char *fmt, ...);
+
+/*------------------------------------------------------------------------*/
+/* First level C exception handler. */
+
+
+/*------------------------------------------------------------------------*/
+/* C++ support - run initial constructors */
+
+#ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
+cyg_bool cyg_hal_stop_constructors;
+#endif
+
+typedef void (*pfunc) (void);
+extern pfunc __CTOR_LIST__[];
+extern pfunc __CTOR_END__[];
+
+void
+cyg_hal_invoke_constructors (void)
+{
+#ifdef CYGSEM_HAL_STOP_CONSTRUCTORS_ON_FLAG
+ static pfunc *p = &__CTOR_END__[-1];
+
+ cyg_hal_stop_constructors = 0;
+ for (; p >= __CTOR_LIST__; p--) {
+ (*p) ();
+ if (cyg_hal_stop_constructors) {
+ p--;
+ break;
+ }
+ }
+#else
+ pfunc *p;
+
+ for (p = &__CTOR_END__[-1]; p >= __CTOR_LIST__; p--)
+ (*p) ();
+#endif
+}
+
+
+/*-------------------------------------------------------------------------*/
+/* Misc functions */
+
+int
+hal_lsbindex(int mask)
+{
+ int i;
+ for (i = 0; i < 32; i++) {
+ if (mask & (1<<i)) return (i);
+ }
+ return (-1);
+}
+
+int
+hal_msbindex(int mask)
+{
+ int i;
+ for (i = 31; i >= 0; i--) {
+ if (mask & (1<<i)) return (i);
+ }
+ return (-1);
+}
+
+/*------------------------------------------------------------------------*/
+/* Architecture default ISR */
+
+externC cyg_uint32
+hal_arch_default_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data)
+{
+ CYG_TRACE1(true, "Interrupt: %d", vector);
+
+ CYG_FAIL("Spurious Interrupt!!!");
+ return 0;
+}
+
+extern volatile int *INTERRUPT_MASK;
+
+cyg_uint32 zpu_disable_interrupts()
+{
+ /* NOTE! We disable interrupts before flipping the cached state */
+ cyg_uint32 t=*INTERRUPT_MASK;
+ *INTERRUPT_MASK=1;
+ return t;
+}
+
+void zpu_enable_interrupts()
+{
+ *INTERRUPT_MASK=0;
+}
+
+void zpu_restore_interrupts(cyg_uint32 t)
+{
+ if (t==0)
+ zpu_enable_interrupts();
+ else
+ zpu_disable_interrupts();
+}
+
+externC cyg_uint32 zpu_query_interrupts()
+{
+ return *INTERRUPT_MASK;
+}
+
+/*------------------------------------------------------------------------*/
+// EOF hal_misc.c
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