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Amiga Plus Special 23
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AMIGAplus Sonderheft 23 (2000)(Falke)(DE)[!].iso
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BlizKick
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ramlibstack.ASM
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Assembly Source File
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1999-11-06
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2KB
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100 lines
; FILE: Source:modules/ramlibstack.ASM REV: 2 --- make ramlib stack 8k
;
; Make ramlib stack 8k
; ~~~~~~~~~~~~~~~~~~~~
; This module hacks ramlib initialization so that it will allocate
; 8k stack instead of original 2k. Substitutes MCPRamlibPatch.
;
; Written by Harry Sintonen.
; This source code is Public Domain.
;
incdir "include:"
include "blizkickmodule.i" ; Some required...
SECTION PATCH,CODE
_DUMMY_LABEL
BK_PTC
; Code is run with following incoming parameters:
;
; a0=ptr to ROM start (buffer) eg. $1DE087B8
; a1=ptr to ROM start (ROM) eg. $00F80000 (do *not* access!)
; d0=ROM lenght in bytes eg. $00080000
; a2=ptr to _FindResident routine (will search ROM buffer for resident tag):
; CALL: jsr (a2)
; IN: a0=ptr to ROM, d0=rom len, a1=ptr to resident name
; OUT: d0=ptr to resident (buf) or NULL
; a3=ptr to _InstallModule routine (can be used to plant a "module"):
; CALL: jsr (a3)
; IN: a0=ptr to ROM, d0=rom len, a1=ptr to module, d6=dosbase
; OUT: d0=success
; a4=ptr to _Printf routine (will dump some silly things (errormsg?) to stdout ;-)
; CALL: jsr (a4)
; IN: a0=FmtString, a1=Array (may be 0), d6=dosbase
; OUT: -
; d6=dosbase, a6=execbase
;
; Code should return:
;
; d0=true if succeeded, false if failed.
; d1-d7/a0-a6 can be trashed. a7 *must* be preserved! ;-)
cmp.w #37,($C,a0)
bhs.b .cont
moveq #0,d0
rts
.cont movem.l d0/a0-a1,-(sp)
lea (ramlibname,pc),a1
jsr (a2)
tst.l d0
beq .fail
move.l d0,a5
move.l a5,a0 ; a0=beg of search
lea (2048,a0),a1 ; a1=end of search
move.l #$2608E48B,d1
move.l #$7808E19C,d2
move.l #$4EAEFF76,d3
.find addq.l #2,a0
cmp.l a1,a0
bhs.b .not_found
cmp.l (a0),d1
bne.b .find
cmp.l (4,a0),d2
bne.b .find
cmp.l (8,a0),d3
bne.b .find
move.w #$7820,(4,a0)
moveq #1,d0
bra.b .noerr
.not_found move.l (RT_IDSTRING,a5),a0
sub.l (2*4,sp),a0 ;[a1]
add.l (1*4,sp),a0 ;[a0]
move.l a0,-(sp)
move.l sp,a1
lea (fmt1,pc),a0
jsr (a4)
addq.l #4,sp
.fail moveq #0,d0
.noerr lea (3*4,sp),sp
rts
ramlibname dc.b 'ramlib',0
fmt1 dc.b 'Couldn''t patch %s',0
SECTION VERSION,DATA
dc.b '$VER: ramlibstack_PATCH 1.0 (19.10.98)',0