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annotate level2/modules/kernel/ficpt.asm @ 3195:6eb2edad80d8

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L2: Introduce symbol KrnBlk to define kernel block number This is the block number that the kernel is loaded into. This is platform-specific, a function of the behaviour of the platform MMU/DAT. CRCs are unaffected by this change.
author Neal Crook <foofoobedoo@gmail.com>
date Thu, 01 Jun 2017 22:13:49 +0100
parents 039ddb7c8ad7
children
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1 **************************************************
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2 * System Call: F$Icpt
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3 *
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4 * Function: Sets the function to be called when a signal arrives.
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039ddb7c8ad7 l2 kernel: Remove tabs and trailing whitespace, align comments
Neal Crook <foofoobedoo@gmail.com>
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5 *
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6 *
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7 * Input: X = Address of intercept routine
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8 * U = Address of intercept routine data area
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9 *
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10 * Output: None
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11 *
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12 * Error: CC = C bit set; B = error code
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13 *
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14 FIcpt ldx <D.Proc get current process pointer
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15 ldd R$X,u Get vector for signal trap handler
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16 IFNE H6309
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17 ldw R$U,u Get data area ptr for signal trap handler
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18 stq P$SigVec,x Save them in descriptor
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19 ELSE
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20 std P$SigVec,x
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21 ldd R$U,u
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22 std P$SigDat,x
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23 ENDC
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24 clrb clear errors
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25 rts return