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; Copyright 2016 Castle Technology Ltd
;
; Licensed under the Apache License, Version 2.0 (the "License");
; you may not use this file except in compliance with the License.
; You may obtain a copy of the License at
;
; http://www.apache.org/licenses/LICENSE-2.0
;
; Unless required by applicable law or agreed to in writing, software
; distributed under the License is distributed on an "AS IS" BASIS,
; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
; See the License for the specific language governing permissions and
; limitations under the License.
;
; DA handler for AMBControl DA nodes
AMBDAHandler ROUT
CMP R0, #DAHandler_ResizePMP
BNE UnknownHandlerError
; In:
; R0 = Reason code
; R1 = change amount (pages)
; R2 = DA number (ignore)
; R12 -> AMBNode
; Out:
; All regs preserved
Entry "R1,R2,R12"
[ AMB_Debug
LDR R2, [R12, #AMBNode_handle]
DebugReg R2, "AMBDAHandler "
DebugReg R1
]
MOV R2, R12
CMP R1, #0
LDR LR, [R2, #AMBNode_DANode+DANode_PMPSize]
LDR R12, =ZeroPage+AMBControl_ws
ADD R1, R1, LR
LDR R12, [R12]
ADR R14, %FT10
BGT growpages
BLT shrinkpages
10
[ AMB_Debug
LDR R2, [R2, #AMBNode_DANode+DANode_PMPSize]
DebugReg R2, "<AMBDAHandler new size "
]
EXIT
END