77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/*
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* Copyright (c) 2021, Shenzhen Academy of Aerospace Technology
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2021-11-16 Dystopia the first version
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*/
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#ifndef __TRAP_H__
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#define __TRAP_H__
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#include "c66xx.h"
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/*
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* exception operation macro
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*/
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#define disable_exception()
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#define get_except_type() EFR
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#define ack_exception(type) ECR = 1ul << (type)
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#define get_iexcept() IERR
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#define set_iexcept(mask) IERR = (mask)
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/*
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* exception types
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*/
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#define EXCEPT_TYPE_NXF 31 /* NMI */
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#define EXCEPT_TYPE_EXC 30 /* external exception */
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#define EXCEPT_TYPE_IXF 1 /* internal exception */
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#define EXCEPT_TYPE_SXF 0 /* software exception */
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#define EXCEPT_CAUSE_LBX (1 << 7) /* loop buffer exception */
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#define EXCEPT_CAUSE_PRX (1 << 6) /* privilege exception */
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#define EXCEPT_CAUSE_RAX (1 << 5) /* resource access exception */
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#define EXCEPT_CAUSE_RCX (1 << 4) /* resource conflict exception */
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#define EXCEPT_CAUSE_OPX (1 << 3) /* opcode exception */
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#define EXCEPT_CAUSE_EPX (1 << 2) /* execute packet exception */
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#define EXCEPT_CAUSE_FPX (1 << 1) /* fetch packet exception */
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#define EXCEPT_CAUSE_IFX (1 << 0) /* instruction fetch exception */
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enum SYSTEM_TRAP_CODE
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{
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ABORT_BUS_ADDRERR = 0, // bus address error
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ABORT_BUS_ACCERR, // bus access permission error
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ABORT_OPCODE_ILL, // illegal opcode
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ABORT_PRVREG_ILL, // privilege register
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ABORT_PRVOPC_ILL, // privileged opcode
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ABORT_ILLTRP_ILL, // illegal trap
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ABORT_BRKPT_ILL, // handling breakpoints
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};
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/*
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* abort types
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*/
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#define ABORT_TYPE_BUS 0 // bus access abnormal
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#define ABORT_TYPE_MAP 1 // page table mapping error
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#define ABORT_TYPE_UNDDEF 0xff // undefined exception
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#define ABORT_TYPE_FATAL 0xffffffff // fatal error
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struct rt_exception_info {
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char *kernel_str;
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int type;
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int code;
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};
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#define BKPT_OPCODE 0x56454314 /* illegal opcode */
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#define INTC_MEXPMASK __SYSREGA(0x018000e0, unsigned int)
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#define __ffs(a) (_lmbd(1, _bitr(a)))
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#define __fls(a) (!(a) ? 0 : (32 - _lmbd(1, (a))))
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extern void rt_trap_init(void);
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#endif /* __TRAP_H__ */
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