126 lines
5.0 KiB
C
126 lines
5.0 KiB
C
/**************************************************************************/
|
|
/* Copyright (c) Cadence Design Systems, Inc. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/**************************************************************************/
|
|
|
|
/**************************************************************************/
|
|
/* */
|
|
/* DESCRIPTION */
|
|
/* */
|
|
/* Xtensa-specific interrupt handler wrapper. */
|
|
/* */
|
|
/* RELEASE HISTORY */
|
|
/* */
|
|
/* DATE NAME DESCRIPTION */
|
|
/* */
|
|
/* 12-31-2020 Cadence Design Systems Initial Version 6.1.3 */
|
|
/* */
|
|
/**************************************************************************/
|
|
|
|
|
|
#include <xtensa/config/core.h>
|
|
#include <xtensa/core-macros.h>
|
|
|
|
#include "xtensa_rtos.h"
|
|
#include "xtensa_api.h"
|
|
|
|
#include "tx_api.h"
|
|
#include "tx_thread.h"
|
|
|
|
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
|
|
#include "tx_execution_profile.h"
|
|
#endif
|
|
|
|
|
|
#if (XCHAL_HAVE_XEA3 && XCHAL_HAVE_INTERRUPTS)
|
|
|
|
/* Table of interrupt hooks. Used for testing ONLY. */
|
|
#ifdef XT_INTEXC_HOOKS
|
|
volatile XT_INTEXC_HOOK _xt_intexc_hooks[XT_INTEXC_HOOK_NUM];
|
|
#endif
|
|
|
|
|
|
/* Handler table is in xtensa_intr_asm.S */
|
|
|
|
typedef struct xt_handler_table_entry {
|
|
void * handler;
|
|
void * arg;
|
|
} xt_handler_table_entry;
|
|
|
|
extern xt_handler_table_entry _xt_interrupt_table[XCHAL_NUM_INTERRUPTS + 1];
|
|
extern int32_t xt_sw_intnum;
|
|
|
|
static int32_t xt_wflag;
|
|
|
|
|
|
/**************************************************************************/
|
|
/* Wrapper for interrupt handlers. Argument is (intnum << 2). */
|
|
/* Execution comes here from the dispatch code if the wrapper is */
|
|
/* enabled. */
|
|
/**************************************************************************/
|
|
void
|
|
xt_interrupt_wrapper(void * arg)
|
|
{
|
|
uint32_t intnum = (uint32_t)(arg) >> 2;
|
|
xt_handler_table_entry * entry;
|
|
xt_handler handler;
|
|
|
|
/* Increment interrupt nest counter. */
|
|
_tx_thread_system_state++;
|
|
|
|
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
|
|
/* Call the ISR enter function to indicate an ISR is executing. */
|
|
_tx_execution_isr_enter();
|
|
#endif
|
|
|
|
/* Load handler address and argument from table. Note that the
|
|
first entry in the table points to this wrapper, so we have
|
|
to skip ahead one.
|
|
*/
|
|
entry = _xt_interrupt_table + intnum + 1;
|
|
handler = (xt_handler) entry->handler;
|
|
|
|
(*handler)(entry->arg);
|
|
|
|
#ifdef TX_ENABLE_EXECUTION_CHANGE_NOTIFY
|
|
/* Call the ISR exit function to indicate an ISR is complete. */
|
|
_tx_execution_isr_exit();
|
|
#endif
|
|
|
|
/* If a context switch is pending, trigger the SW interrupt
|
|
to process the switch. Set an internal flag so we don't
|
|
trigger the sw interrupt again when handling it.
|
|
*/
|
|
if (xt_wflag != 0) {
|
|
xt_wflag = 0;
|
|
}
|
|
else if (_tx_thread_current_ptr != _tx_thread_execute_ptr) {
|
|
xt_wflag = 1;
|
|
xt_interrupt_trigger(xt_sw_intnum);
|
|
}
|
|
|
|
/* Decrement interrupt nest counter. */
|
|
_tx_thread_system_state--;
|
|
}
|
|
|
|
#endif /* XCHAL_HAVE_XEA3 && XCHAL_HAVE_INTERRUPTS */
|
|
|