99 lines
1.8 KiB
ArmAsm
99 lines
1.8 KiB
ArmAsm
/*
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* File : trapisr_gcc.S
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2006-09-15 QiuYi The first version.
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*/
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/**
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* @addtogroup I386
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*/
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/*@{*/
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#define ENTRY(proc)\
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.align 2;\
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.globl proc;\
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.type proc,@function;\
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proc:
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#define TRAPFNC(name,num)\
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ENTRY(name)\
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pushl $(num);\
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jmp _traps;\
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.data;\
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.long name;\
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.text
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#define TRAPFNC_NOEC(name,num)\
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ENTRY(name)\
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pushl $0;\
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pushl $(num);\
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jmp _traps;\
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.data;\
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.long name;\
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.text
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.globl trap_func
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.data
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.align 4
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.type trap_func,@object
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trap_func :
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.text
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/* CPU traps */
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TRAPFNC_NOEC(Xdivide, 0)
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TRAPFNC_NOEC(Xdebug, 1)
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TRAPFNC_NOEC(Xnmi, 2)
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TRAPFNC_NOEC(Xbrkpt, 3)
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TRAPFNC_NOEC(Xoflow, 4)
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TRAPFNC_NOEC(Xbound, 5)
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TRAPFNC_NOEC(Xillop, 6)
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TRAPFNC_NOEC(Xdevice, 7)
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TRAPFNC (Xdblflt, 8)
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TRAPFNC (Xtss, 9)
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TRAPFNC (Xsegnp, 10)
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TRAPFNC (Xstack, 11)
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TRAPFNC (Xgpflt, 12)
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TRAPFNC (Xpgflt, 13)
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TRAPFNC_NOEC(Xfperr, 14)
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TRAPFNC (Xalign, 15)
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/* default handler -- not for any specific trap */
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TRAPFNC (Xdefault, 500)
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.p2align 4,0x90
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.globl _traps
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.type _traps,@function
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.globl rt_interrupt_enter
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.globl rt_interrupt_leave
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_traps:
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push %ds
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push %es
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pushal
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movw $0x10,%ax
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movw %ax,%ds
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movw %ax,%es
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pushl %esp
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call rt_interrupt_enter
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movl %esp, %eax
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addl $0x2c,%eax /*get trapno*/
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movl (%eax),%eax
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pushl %eax /*push trapno*/
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call rt_hw_trap_irq
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addl $4,%esp
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call rt_interrupt_leave
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popl %esp
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popal
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pop %es
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pop %ds
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add $8,%esp
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iret
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/*@}*/
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