27 lines
457 B
ArmAsm
27 lines
457 B
ArmAsm
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# $Header$
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.globl .trp
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.trp:
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movl r0,-(sp)
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movl 8(sp),r0
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movl 4(sp),8(sp)
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movl (sp)+,(sp)
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cmpl r0,$16
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bgequ L1 # a trapnumber >= 16 cannot be ignored
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bbc r0,.trpim,L1
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movl (sp)+,r0
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rsb
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L1:
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pushr $017776 # save registers
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movl r0,-(sp) # trapnumber on stack
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movl .trppc,r0
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beql L2 #is there a user defined traphandler?
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clrl .trppc
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jsb (r0) #if so, call it
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tstl (sp)+
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popr $017776 #restore registers
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movl (sp)+,r0
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rsb
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L2:
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bpt
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