55 lines
2.0 KiB
C
55 lines
2.0 KiB
C
// Copyright 2023 Bradley D. Nelson
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#if defined(ENABLE_ESP32_FORTH_FAULT_HANDLING)
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#include <setjmp.h>
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#include "soc/soc.h"
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#include <xtensa/xtensa_api.h>
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static __thread jmp_buf g_forth_fault;
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static __thread int g_forth_signal;
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static __thread uint32_t g_forth_setlevel;
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#define FAULT_ENTRY \
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if (setjmp(g_forth_fault)) { THROWIT(-g_forth_signal); }
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static void IRAM_ATTR forth_exception_handler(XtExcFrame *frame) {
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g_forth_signal = frame->exccause;
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XTOS_RESTORE_INTLEVEL(g_forth_setlevel);
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longjmp(g_forth_fault, 1);
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}
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static void forth_faults_setup(void) {
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xt_set_exception_handler(EXCCAUSE_LOAD_STORE_ERROR, forth_exception_handler);
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xt_set_exception_handler(EXCCAUSE_PRIVILEGED, forth_exception_handler);
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xt_set_exception_handler(EXCCAUSE_UNALIGNED, forth_exception_handler);
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xt_set_exception_handler(EXCCAUSE_DIVIDE_BY_ZERO, forth_exception_handler);
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xt_set_exception_handler(EXCCAUSE_INSTR_ERROR, forth_exception_handler);
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xt_set_exception_handler(EXCCAUSE_ILLEGAL, forth_exception_handler);
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xt_set_exception_handler(EXCCAUSE_LOAD_PROHIBITED, forth_exception_handler);
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xt_set_exception_handler(EXCCAUSE_STORE_PROHIBITED, forth_exception_handler);
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xt_set_exception_handler(EXCCAUSE_INSTR_PROHIBITED, forth_exception_handler);
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uint32_t default_setlevel = XTOS_SET_INTLEVEL(XCHAL_EXCM_LEVEL);
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XTOS_RESTORE_INTLEVEL(default_setlevel);
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g_forth_setlevel = default_setlevel;
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}
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#else
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#define forth_faults_setup()
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#define FAULT_ENTRY
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#endif
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