0dd719f1bd
On second thought, handle unknown faults caused by processes by sending SIGSEGV to them instead of bringing the whole system to a grind. arm/archconst: use values defined in armreg.h Change-Id: Ieed5bb06910ab0c8eef1e68b0b4eec680867acd3
52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
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#ifndef _ARM_ACONST_H
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#define _ARM_ACONST_H
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#include <machine/interrupt.h>
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#include <machine/memory.h>
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#include <machine/cpu.h>
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#include <arm/armreg.h>
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/* Program stack words and masks. */
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#define INIT_PSR (PSR_USR32_MODE | PSR_F) /* initial psr */
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#define INIT_TASK_PSR (PSR_SVC32_MODE | PSR_F) /* initial psr for tasks */
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/* Exception vector numbers */
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#define RESET_VECTOR 0
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#define UNDEFINED_INST_VECTOR 1
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#define SUPERVISOR_CALL_VECTOR 2
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#define PREFETCH_ABORT_VECTOR 3
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#define DATA_ABORT_VECTOR 4
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#define HYPERVISOR_CALL_VECTOR 5
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#define INTERRUPT_VECTOR 6
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#define FAST_INTERRUPT_VECTOR 7
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/* Data abort helper */
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#define is_align_fault(fault_status) \
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((fault_status) == FAULT_ALIGN_0)
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#define is_trans_fault(fault_status) \
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(((fault_status) == FAULT_TRANS_S) || ((fault_status) == FAULT_TRANS_P))
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#define is_perm_fault(fault_status) \
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(((fault_status) == FAULT_PERM_S) || ((fault_status) == FAULT_PERM_P))
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/*
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* defines how many bytes are reserved at the top of the kernel stack for global
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* information like currently scheduled process or current cpu id
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*/
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#define ARM_STACK_TOP_RESERVED (2 * sizeof(reg_t))
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/* only selected bits are changeable by user e.g.[31:9] and skip the
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* mode bits. It is probably is a better idea to look at the current
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* status to determine if one is allowed to write these values. This
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* might allow debugging of privileged processes
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*/
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#define SET_USR_PSR(rp, npsr) \
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rp->p_reg.psr = ( rp->p_reg.psr & 0x1F) | ( npsr & ~0x1F)
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#define PG_ALLOCATEME ((phys_bytes)-1)
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#endif /* _ARM_ACONST_H */
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