Apple-2gs-SW/Linker
1
0
Fork 0
mirror of https://github.com/byteworksinc/Linker.git synced 2024-11-08 18:08:25 +00:00
Code Issues Projects Releases Wiki Activity
c21ae46a4d
Linker/out.asm
Kelvin Sherlock c21ae46a4d convert CR files to LF for better git compatibility.
2017-10-02 09:35:05 -04:00

3148 lines
59 KiB
NASM
Raw Blame History

keep obj/out
mcopy out.mac
****************************************************************
*
* Ouput Module
*
* This module handles writing the output file and locating the
* proper load segment for code segments.
*
****************************************************************
copy directPage
****************************************************************
*
* OutCommon - global data for the segment module
*
****************************************************************
*
OutCommon data
;
; Constants
;
nameSize equ 10 size of a load segment name
dictGrowSize equ 4096 grow size for the dictionary buffer
dynGrowSize equ 1024 grow size for synamic segment buffer
;
; global variables
;
expressSegment ds 2 express segment number
keepRefnum ds 2 keep file reference number
lastLoadNumber ds 4 last load number allocated
loadList ds 4 head of load segment list
loadNamePtr ds 4 pointer to the name of the load segment
;
; Dynamic segment information
;
dynHandle ds 4 handle of the dynamic segment buffer
dynSize ds 2 bytes left in the buffer
dynBuffSize ds 4 total memory in the segment buffer
dynStart ds 4 ptr to the start of the buffer
dynSegment ds 2 dynamic segment number
;
; Current load segment information
;
loadNext ds 4 pointer to the next load segment
loadLast ds 4 pointer to the last load segment
loadPtr ds 4 pointer to the storage location for this record
loadNumber ds 2 number of this load segment
loadType ds 2 load segment type
loadORG ds 4 load segment origin
loadAlign ds 4 load segment aligment
loadBankSize ds 4 load segment bank size
loadName ds nameSize name of the load segment
loadSeg ds 4 handle of the segment buffer
loadSegStart ds 4 start of the segment buffer
loadPC ds 4 size of the load segment
loadOp ds 4 op disp for the segment buffer
loadOpSt ds 4 op at start of current lConst
loadDict ds 4 handle of the dictionary buffer
loadDictStart ds 4 start of the dictionary buffer
loadDictSize ds 2 bytes left in the dictionary buffer
loadDp ds 4 dp disp for the dictionary buffer
loadPass2 ds 2 are we ready for pass 2?
loadEnd anop end of the record
loadSize equ loadEnd-loadNext size of a load module record (even!)
end
****************************************************************
*
* AddEnd - add an end record to the dictionary
*
* Inputs:
* loadNext... - load segment record
*
****************************************************************
*
AddEnd private
using OutCommon
lda loadDictSize make sure there is room in the dictionary
bne lb1
jsr ExpandDictBuffer
lb1 short M save the end marker
lda #0
sta [dp]
long M
inc4 dp update dp
dec loadDictSize update loadDictSize
rts
end
****************************************************************
*
* AddSegment - add a segment to the expressload table
*
* Inputs:
* r8 - pointer to the segment to add
* r4,r8 - expressload list pointers
* expOffset - segment offset pointer
* expMap - segment map pointer
* expHeader - segment header map
* expressSegment - express segment number
*
****************************************************************
*
AddSegment private
using OutCommon
jsr MoveSegment move the segment ot the new list
sub4 expHeader,expOffset,r12 set the segment offset
lda r12
sta [expOffset]
ldy #6 zero the reserved words
lda #0
lb1 sta [expOffset],Y
dey
dey
bne lb1
add4 expOffset,#8 update the offset pointer
ldy #loadNumber-loadNext get the old segment number
lda [r4],Y
dec A set it's mapped segment
asl A
tay
lda expressSegment
sta [expMap],Y
ldy #loadNumber-loadNext set the new segment number
sta [r4],Y
inc expressSegment update segment number
add4 fMark,#69+5 allow for the segment header & lconst
move4 fMark,mark1 set the lconst mark
ldy #loadPC-loadNext find the segment size
lda [r4],Y
sta len1
iny
iny
lda [r4],Y
sta len1+2
add4 fMark,len1 allow for the segment body
move4 fMark,mark2 set the reloc mark
ldy #loadDp-loadNext find the reloc size
lda [r4],Y
sta len2
iny
iny
lda [r4],Y
sta len2+2
ora len2 if len2 = 0 then
bne lb1a
stz mark2 mark2 = 0
stz mark2+2
lb1a add4 fMark,len2 allow for the dictionary
inc4 fMark allow for the end mark
ldy #loadBankSize-loadNext set the bank size
lda [r4],Y
sta bankSize
iny
iny
lda [r4],Y
sta bankSize+2
ldy #loadType-loadNext set the segment type
lda [r4],Y
sta kind
ldy #loadOrg-loadNext set the origin
lda [r4],Y
sta org
iny
iny
lda [r4],Y
sta org+2
ldy #loadAlign-loadNext set the alignment factor
lda [r4],Y
sta align
iny
iny
lda [r4],Y
sta align+2
ldy #loadNumber-loadNext set the segment number
lda [r4],Y
sta segNum
ldx #nameSize-2 set the segment name
ldy #loadName-loadNext+nameSize-2
lb2 lda [r4],Y
sta name,X
dey
dey
dex
dex
bpl lb2
ldy #segEnd-mark1-1 move the header to the express segment
short M
lb3 lda mark1,Y
sta [expHeader],Y
dey
bpl lb3
long M
add4 expHeader,#69 update the segment header pointer
rts
mark1 ds 4 lConst file mark
len1 ds 4 lConst length
mark2 ds 4 reloc file mark
len2 ds 4 reloc length
dc i1'0' undefined
dc i1'0' label length
dc i1'4' number length
dc i1'2' version
bankSize ds 4 bank size
kind ds 2 segment type
dc i'0' undefined
org ds 4 origin
align ds 4 alignment
dc i1'0' numsex
dc i1'0' undefined
segNum ds 2 segment number
dc i4'0' segment entry
dc i'lname-len1' disp to name
dc i'segend-mark1' disp to body
lname dc 10c' ' load name
dc i1'10' segment name length
name ds 10 segment name
segend anop
end
****************************************************************
*
* CheckHeader - check the header parameters
*
* Inputs:
* segOrg - origin for this segment
* segAlign - alignment for this segment
* segType - type for this segment
* segBanksize - banksize for this segment
* loadType - load segment type
* loadORG - load segment origin
* loadAlign - load segment aligment
* loadBankSize - load segment bank size
*
* Outputs:
* loadType - load segment type
* loadORG - load segment origin
* loadAlign - load segment aligment
* loadBankSize - load segment bank size
*
****************************************************************
*
CheckHeader private
using OutCommon
using Common
;
; Set the load segment type
;
lda loadPC if at the start of the segment then
ora loadPC+2
bne st1
lda segType use segType
and #$FEFF
sta loadType
bra st4 else
st1 lda segType or in the or flags
and #$1D00
ora loadType
sta loadType
lda segType mask out missing and flags
and #$E200
ora #$3DFF
and loadType
sta loadType
lda loadType get the type without flags
and #$007F
sta r0
lda segType
and #$007F
cmp r0 if they do not match then
beq st4
cmp #1 if seg is data then
bne st2
lda r0 if not load in [code,init,dp] then
beq st4
cmp #$10
beq st4
cmp #$12
beq st4
err15 ph4 #0 flag segment conflict
ph2 #15
jsr Error
bra st4
st2 cmp #0 else if seg in [code,init,dp] then
beq st3
cmp #$10
beq st3
cmp #$12
bne err15
st3 lda r0 if load = data then
cmp #1
bne err15
lda loadType use seg type
and #$FF00
sta loadType
lda segType
and #$007F
ora loadType
sta loadType
! else flag the error
st4 anop endif
lda bankOrg if bankOrg then
beq st5
lda loadType bank org the program
ora #$0100
sta loadType
st5 anop endif
;
; Set the load segment origin (pass 1)
;
lda pass branch if pass 2
cmp #2
beq or0
lda segOrg skip if org is 0
ora segOrg+2
jeq or4
lda loadPC if at the start of the segment then
ora loadPC+2
ora loadOrg
ora loadOrg+2
bne po1
move4 segOrg,loadOrg loadOrg = segOrg
bra po3 else
po1 sub4 segOrg,loadOrg,r0 update the pc
lda r2
bmi po3
cmpl r0,pc
blt po3
move4 r0,pc
po3 anop endif
bra or4
;
; Set the load segment origin (pass 2)
;
or0 lda segOrg skip if org is 0
ora segOrg+2
beq or4
lda loadPC if at the start of the segment then
ora loadPC+2
ora loadOrg
ora loadOrg+2
bne or1
move4 segOrg,loadOrg loadOrg = segOrg
bra or3 else
or1 sub4 segOrg,loadOrg,r0 update the pc
sub4 r0,pc
lda r2
bpl or2 if disp is negative then
ph4 #0 Error(NULL,3)
ph2 #3
jsr Error
bra or3 else
or2 lda r0 define DS bytes to fill space
ora r2
beq or3
jsr DefineDS
or3 anop endif
jsr CheckAlignOrg check for conflicts between align,org
or4 anop
;
; Set the load segment alignment (pass 1)
;
lda pass branch if pass 2
cmp #2
beq sa0
lda segAlign skip if alignment is 0
ora segAlign+2
jeq sa4
lda loadPC if at the start of the segment then
ora loadPC+2
ora loadAlign
ora loadAlign+2
bne la1
move4 segAlign,loadAlign loadAlign = segAlign
bra la2 else
la1 move4 segAlign,r0 PrepareAlign(segAlign)
jsr PrepareAlign
la2 anop endif
bra sa4
;
; Set the load segment alignment (pass 2)
;
sa0 lda segAlign skip if alignment is 0
ora segAlign+2
beq sa4
ph4 segAlign make sure the align is a power of 2
jsr CheckAlign
lda loadPC if at the start of the segment then
ora loadPC+2
ora loadAlign
ora loadAlign+2
bne sa1
move4 segAlign,loadAlign loadAlign = segAlign
bra sa3 else
sa1 cmpl loadAlign,segAlign if loadAlign < segAlign then
bge sa2
ph4 #0 Error(NULL,22)
ph2 #22
jsr Error
bra sa3 else
sa2 move4 segAlign,r0 DefineAlign(segAlign)
jsr DefineAlign
! anop endif
sa3 anop endif
jsr CheckAlignOrg check for conflicts between align,org
sa4 anop
;
; Set the load segment bank size
;
lda pass branch if pass 2
cmp #2
beq rt1
lda loadBankSize if loadBanksize = 0
ora loadBanksize+2
beq bs1
cmpl segBanksize,loadBanksize or ((segBanksize < loadBanksize)
bge bs2 and (segBanksize <> 0)) then
lda segBanksize
ora segBanksize+2
beq bs2
bs1 move4 segBankSize,loadBankSize loadBankSize = segBankSize
bs2 anop
rt1 rts
;
; CheckAlignOrg - make sure the align and org do not conflict
;
CheckAlignOrg anop
lda loadAlign if loadAlign <> 0 then
ora loadAlign+2
beq ca2
sub4 loadAlign,#1,r0 if loadOrg & (loadAlign-1) then
lda r0
and loadOrg
bne ca1
lda r2
and loadOrg+2
beq ca2
ca1 ph4 #0 Error(NULL,21)
ph2 #21
jsr Error
ca2 rts
end
****************************************************************
*
* CompactCInterseg - compact a cInterseg record
*
* Inputs:
* r0 - ptr to the cInterseg record
* r4 - ptr to the end of the dictionary
* dp - ptr to the next free byte in the dictionary
*
****************************************************************
*
CompactCInterseg private
using Common
using OutCommon
;
; See if the record can be compacted
;
lda [r0] length must be 2 or 3
xba
and #$00FF
cmp #2
beq ck1
cmp #3
jne nc1
ck1 sta length
cmp #3 if length = 3 then
bne ck2
ldy #2 shift count must be 0
lda [r0],Y
and #$00FF
jne nc1
stz shift
lda #2 set the record type
sta recordType
ldy #5 set the segment number
lda [r0],Y
and #$00FF
sta segment
bra ck3 else {if length = 2 then}
ck2 ldy #5 segment number must be <= 12
lda [r0],Y
and #$00FF
sta segment
cmp #13
jge nc1
ldx express if express then
beq ck2a
cmp #12 don't use 12, either
jeq nc1
ck2a clc set the record type for shift 0
lda segment
adc #13
sta recordType
ldy #2 shift must be 0 or -16
lda [r0],Y
and #$00FF
sta shift
beq ck3
cmp #$00F0
jne nc1
add2 recordType,#12 set the record type for shift -16
ck3 anop
;
; Create a Super record
;
lda #13 create the record header
cmp loadDictSize make sure there is room in the
blt sp1 dictionary
jsr ExpandDictBuffer
sp1 add4 dp,#1,recordLengthPtr save a pointer to the length field
sub4 recordLengthPtr,loadDictStart
short M set the op code
lda #$F7
sta [dp]
ldy #5 set the super record type
lda recordType
sta [dp],Y
long M
add4 dp,#6 skip the super record header
sub2 loadDictSize,#6
ldy #4 set the segment offset page
lda [r0],Y
and #$00FF
sta page
beq pg3 if page <> 0 then
sta r12 while (r12 := page) > $7F do
pg1 lda r12
cmp #$80
blt pg2
short M write a skip page for $7F pages
lda #$FF
sta [dp]
long M
inc4 dp
dec loadDictSize
sub2 r12,#$7F r12 -= $7F
bra pg1 endwhile
pg2 lda r12 if r12 <> 0 then
beq pg3
short M write a skip page for r12 pages
ora #$80
sta [dp]
long M
inc4 dp
dec loadDictSize
pg3 anop
move4 dp,r12 initialize the page counter
short M
lda #$FF
sta [r12]
long M
inc4 dp skip the page counter
dec loadDictSize
move4 r0,r8 for each dictionary record do
sp2 cmpl r8,r4
jeq sp14
lda [r8] if it is a Reloc then
and #$00FF
cmp #$E2
bne sp3
add4 r8,#11 skip the record
bra sp2 loop
sp3 cmp #$75 if it is a skipped cReloc or
beq sp4 cReloc then
cmp #$F5
bne sp5
sp4 add4 r8,#7 skip the record
bra sp2 loop
sp5 cmp #$76 if it is a skipped cInterseg then
bne sp6
add4 r8,#8 skip the record
bra sp2 loop
sp6 cmp #$E3 if it is an Interseg then
bne sp7
add4 r8,#15 skip the record
bra sp2 loop
sp7 ldy #2 if the cInterseg is a different type
short M then
lda [r8],Y
cmp shift
bne sp7a
dey
lda [r8],Y
cmp length
bne sp7a
cmp #3
beq sp8
ldy #5
lda [r8],Y
cmp segment
beq sp8
sp7a long M skip the record
add4 r8,#8
brl sp2 loop
sp8 long M make sure there is room in the
lda #5 dictionary
cmp loadDictSize
blt sp9
sub4 r12,loadDictStart
jsr ExpandDictBuffer
add4 r12,loadDictStart
sp9 short M if r8^.page <> page then
sec
ldy #4
lda [r8],Y
sbc page
beq sp13
dec A if r8^.page - page > 1 then
beq sp12
sp10 cmp #$80 record a page skip
blt sp11
tax
lda #$FF
sta [dp]
long M
inc4 dp
dec loadDictSize
short M
txa
sec
sbc #$7F
bra sp10
sp11 cmp #0
beq sp12
ora #$80
sta [dp]
long M
inc4 dp
dec loadDictSize
short M
sp12 ldy #4 record the new page
lda [r8],Y
sta page
lda #$FF set up a record count
sta [dp]
long M
move4 dp,r12
inc4 dp
dec loadDictSize
short M
sp13 lda [r12] increment the record count
inc A
sta [r12]
ldy #3 set the offset
lda [r8],Y
sta [dp]
long M
inc4 dp
dec loadDictSize
short M mark the record
lda [r8]
and #$7F
sta [r8]
long M
add4 r8,#8 skip the record
brl sp2 loop
sp14 anop set the super record length
add4 recordLengthPtr,loadDictStart,r12
sub4 dp,r12,recordLengthPtr
sub4 recordLengthPtr,#4
ldy #2
lda recordLengthPtr
sta [r12]
lda recordLengthPtr+2
sta [r12],Y
rts
;
; Cannot compact - put the unchanged record in the dictionary
;
nc1 lda #8 make sure there is room in the
cmp loadDictSize dictionary
blt nc2
jsr ExpandDictBuffer
nc2 ldy #6 move the record
nc3 lda [r0],Y
sta [dp],Y
dey
dey
bpl nc3
add4 dp,#8 skip the record
sub2 loadDictSize,#8
add4 r0,#8
rts
;
; Local data
;
recordLengthPtr ds 4 pointer to the super record length field
page ds 2 current cReloc page number
length ds 2 length of the cReloc fields
shift ds 2 shift count
segment ds 2 segment number
recordType ds 2 type of the Super record
end
****************************************************************
*
* CompactCReloc - compact a cReloc record
*
* Inputs:
* r0 - ptr to the cReloc record
* r4 - ptr to the end of the dictionary
* dp - ptr to the next free byte in the dictionary
*
****************************************************************
*
CompactCReloc private
using OutCommon
;
; See if the record can be compacted
;
lda [r0] length must be 2 or 3
xba
and #$00FF
cmp #2
beq ck1
cmp #3
jne nc1
ck1 sta length
ldy #2 shift count must be 0
lda [r0],Y
and #$00FF
jne nc1
;
; Create a Super record
;
lda #13 create the record header
cmp loadDictSize make sure there is room in the
blt sp1 dictionary
jsr ExpandDictBuffer
sp1 add4 dp,#1,recordLengthPtr save a pointer to the length field
sub4 recordLengthPtr,loadDictStart
short M set the op code
lda #$F7
sta [dp]
ldy #5 set the super record type
lda length
and #$01
sta [dp],Y
long M
add4 dp,#6 skip the super record header
sub2 loadDictSize,#6
ldy #4 set the segment offset page
lda [r0],Y
and #$00FF
sta page
beq pg3 if page <> 0 then
sta r12 while (r12 := page) > $7F do
pg1 lda r12
cmp #$80
blt pg2
short M write a skip page for $7F pages
lda #$FF
sta [dp]
long M
inc4 dp
dec loadDictSize
sub2 r12,#$7F r12 -= $7F
bra pg1 endwhile
pg2 lda r12 if r12 <> 0 then
beq pg3
short M write a skip page for r12 pages
ora #$80
sta [dp]
long M
inc4 dp
dec loadDictSize
pg3 anop
move4 dp,r12 initialize the page counter
short M
lda #$FF
sta [r12]
long M
inc4 dp skip the page counter
dec loadDictSize
move4 r0,r8 for each dictionary record do
sp2 cmpl r8,r4
jeq sp14
lda [r8] if it is a Reloc then
and #$00FF
cmp #$E2
bne sp3
add4 r8,#11 skip the record
bra sp2 loop
sp3 cmp #$75 if it is a skipped cReloc then
bne sp4
add4 r8,#7 skip the record
bra sp2 loop
sp4 cmp #$F6 if it is a cInterseg or skipped
beq sp5 cInterseg then
cmp #$76
bne sp6
sp5 add4 r8,#8 skip the record
bra sp2 loop
sp6 cmp #$E3 if it is an Interseg then
bne sp7
add4 r8,#15 skip the record
bra sp2 loop
sp7 ldy #1 if the cReloc is a different type then
lda [r8],Y
cmp length (checks length and shift=0)
beq sp8
add4 r8,#7 skip the record
bra sp2 loop
sp8 lda #5 make sure there is room in the
cmp loadDictSize dictionary
blt sp9
sub4 r12,loadDictStart
jsr ExpandDictBuffer
add4 r12,loadDictStart
sp9 short M if r8^.page <> page then
sec
ldy #4
lda [r8],Y
sbc page
beq sp13
dec A if r8^.page - page > 1 then
beq sp12
sp10 cmp #$80 record a page skip
blt sp11
tax
lda #$FF
sta [dp]
long M
inc4 dp
dec loadDictSize
short M
txa
sec
sbc #$7F
bra sp10
sp11 cmp #0
beq sp12
ora #$80
sta [dp]
long M
inc4 dp
dec loadDictSize
short M
sp12 ldy #4 record the new page
lda [r8],Y
sta page
lda #$FF set up a record count
sta [dp]
long M
move4 dp,r12
inc4 dp
dec loadDictSize
short M
sp13 lda [r12] increment the record count
inc A
sta [r12]
ldy #3 set the offset
lda [r8],Y
sta [dp]
long M
inc4 dp
dec loadDictSize
short M mark the record
lda [r8]
and #$7F
sta [r8]
long M
add4 r8,#7 skip the record
brl sp2 loop
sp14 anop set the super record length
add4 recordLengthPtr,loadDictStart,r12
sub4 dp,r12,recordLengthPtr
sub4 recordLengthPtr,#4
ldy #2
lda recordLengthPtr
sta [r12]
lda recordLengthPtr+2
sta [r12],Y
rts
;
; Cannot compact - put the unchanged record in the dictionary
;
nc1 lda #8 make sure there is room in the
cmp loadDictSize dictionary
blt nc2
jsr ExpandDictBuffer
nc2 ldy #6 move the record
nc3 lda [r0],Y
sta [dp],Y
dey
dey
bpl nc3
add4 dp,#7 skip the record
sub2 loadDictSize,#7
add4 r0,#7
rts
;
; Local data
;
recordLengthPtr ds 4 pointer to the super record length field
page ds 2 current cReloc page number
length ds 2 length of the cReloc fields
end
****************************************************************
*
* CompactSegment - compact a single segment
*
* Inputs:
* LoadNext... - segment record
*
****************************************************************
*
CompactSegment private
using OutCommon
using Common
lda loadDict if there is no dictionary then
ora loadDict+2
bne lb1
rts return
lb1 move4 loadDict,dictHandle save the dictionary handle
move4 loadDictStart,r0 get a pointer to the dictionary
move4 dp,r4 get a pointer to the dictionary end
stz loadDictStart zero the current load dictionary
stz loadDictStart+2
stz loadDict
stz loadDict+2
stz loadDp
stz loadDp+2
stz dp
stz dp+2
stz loadDictSize
stz loadDictSize+2
lb2 cmpl r0,r4 for each dictionary entry do
jeq lb12
lda [r0] if r0^ = cReloc then
and #$00FF
cmp #$00F5
bne lb3
jsr CompactCReloc compact the record
bra lb2 loop
lb3 cmp #$75 if r0^ = skipped cReloc then
bne lb4
add4 r0,#7 skip the record
bra lb2 loop
lb4 cmp #$E2 if r0^ = Reloc then
bne lb7
lda #12 make sure there is room in the
cmp loadDictSize dictionary
blt lb5
jsr ExpandDictBuffer
lb5 ldy #10 move the record
lb6 lda [r0],Y
sta [dp],Y
dey
dey
bpl lb6
add4 dp,#11 skip the record
sub2 loadDictSize,#11
add4 r0,#11
bra lb2 loop
lb7 cmp #$F6 if r0^ = cInterseg then
bne lb8
jsr CompactCInterseg compact the record
bra lb2 loop
lb8 cmp #$76 if r0^ = skipped cInterseg then
bne lb9
add4 r0,#8 skip the record
brl lb2 loop
! (condition must be true) if r0^ = Interseg then
lb9 lda #16 make sure there is room in the
cmp loadDictSize dictionary
blt lb10
jsr ExpandDictBuffer
lb10 ldy #14 move the record
lb11 lda [r0],Y
sta [dp],Y
dey
dey
bpl lb11
add4 dp,#15 skip the record
sub2 loadDictSize,#15
add4 r0,#15
brl lb2 loop
lb12 ph4 dictHandle free the old dictionary buffer
_DisposeHandle
rts
dictHandle ds 4 old dictionary handle
end
****************************************************************
*
* CreateDynamicSegment - create the dynamic segment (if any)
*
* Inputs:
* dynSegment - dynmaic segment number; 0 if none
* dynStart - start of the dynamic segment
* dy - next byte in the buffer
*
****************************************************************
*
CreateDynamicSegment private
using OutCommon
lda dynSegment quit if there is no segment
bne lb0
rts
lb0 lda dynSize write the trailing 4 bytes
cmp #4
bge lb1
jsr ExpandDynamicBuffer
lb1 ldy #2
lda #0
sta [dy]
sta [dy],Y
add4 dy,#4
sub4 dy,dynStart,r0 set the size of the lConst
sub4 r0,#5
move4 dynStart,r4
lda #$F2
sta [r4]
ldy #1
lda r0
sta [r4],Y
iny
iny
lda r2
sta [r4],Y
move #0,loadNext,#loadSize clear all entries
lda dynSegment set the segment number
sta loadNumber
lda #2 set the segment type
sta loadType
lla loadBankSize,$10000 set the load segment bank size
move jumpName,loadName,#nameSize set the segment name
move4 dynHandle,loadSeg set the segment buffer handle
move4 dynStart,loadSegStart set the load segment start
sub4 dy,dynStart,loadPc set the segment size
sub4 loadPc,#5
move4 loadPc,pc
move4 dy,op set the segment pointer
sub4 dy,dynStart,loadOp set the segment displacement
inc loadPass2 ready for pass 2
stz dp no dictionary pointer
stz dp+2
jsr SaveSegment
rts
jumpName dc c'~JumpTable'
end
****************************************************************
*
* CreateFile - make sure an output file exists
*
* Inputs:
* kname - keep file name
*
****************************************************************
*
CreateFile private
using OutCommon
move4 kname,giPathname see if a file exists
OSGet_File_Info giRec
bcs lb1
lda giFiletype yes -> make sure it is an OBJ file
cmp #$B3
blt err7
cmp #$BF+1
bge err7
rts
lb1 move4 kname,crPathname no file exists, so create one
OSCreate crRec
bcs err12
rts
err12 lda #12 file write error
jmp TermError
err7 lda #7 Could not overwrite existing file
jmp TermError
;
; Local data
;
giRec dc i'3' GetFileInfo record
giPathname ds 4
ds 2
giFiletype ds 2
crRec dc i'4'
crPathname ds 4
dc i'$C3'
dc i'EXE'
dc i4'$0100'
end
****************************************************************
*
* DecimalVariable - convert an OS string to a decimal value
*
* Inputs:
* r0 - pointer to the shell variable value
*
* Outputs:
* C - set if all characters are digits, else clear
* X-A - value (if C set); least sig. 32 bits only
*
****************************************************************
*
DecimalVariable private
lda [r0] get a loop counter
sta r12
stz r8 set the initial value
stz r10
add4 r0,#2,r4 get a character pointer
lb1 lda [r4] if the character is not a digit then
and #$00FF return false
cmp #'0'
blt lb3
cmp #'9'+1
bge lb3
mul4 r8,#10 r8 = r8*10 + value(r4^)
lda [r4]
and #$000F
clc
adc r8
sta r8
bcc lb2
inc r10
lb2 inc4 r4 loop
dec r12
bne lb1
lda r8 return value
ldx r10
sec
rts
lb3 clc return false
rts
end
****************************************************************
*
* DoCompact - compact the dictionaries
*
****************************************************************
*
DoCompact private
using OutCommon
using Common
jsr SaveSegment save the current segment
lda #1 set the segment number
sta segment
lb1 move4 loadList,r0 find the proper segment
lb2 ldy #loadNumber-loadNext
lda [r0],Y
cmp segment
bne lb3
jsr GetSegment get the segment
jsr CompactSegment compact the segment
jsr SaveSegment save the segment
inc segment next segment
bra lb1 start the search over
lb3 ldy #2 next segment pointer
lda [r0],Y
tax
lda [r0]
sta r0
stx r2
ora r2
bne lb2
move4 loadList,r0 done - get a segment back
jsr GetSegment
rts return
segment ds 2 segment number
end
****************************************************************
*
* DynamicCheck - if any segment is dynamic, set up a jump table
*
* Inputs:
* loadList - list of current load segments
* loadNext... - active load segment
* lastLoadNumber - last load number allocated
*
* Outputs: (if there is a dynamic segment)
* dynHandle - handle of the synamic segment
* dynStart - start of the dynamic segment
* dynSize - size of the dynamic segment
* dy - pointer to the next spot in the dynamic segment
* dynSegment - dynamic segment number
*
****************************************************************
*
DynamicCheck start
using OutCommon
;
; See if any segment is dynamic
;
lda loadType check the current segment
bmi pr1
move4 loadList,r0 check the segments in the segment list
cs1 lda r0
ora r2
beq cs2
ldy #loadType-loadNext
lda [r0],Y
bmi pr1
ldy #2
lda [r0],Y
tax
lda [r0]
sta r0
stx r2
bra cs1
cs2 rts
;
; Prepare for dynamic segment output
;
pr1 stz dy zero the pointer
stz dy+2
stz dynSize zero the size
stz dynBuffSize no memory in the buffer
stz dynBuffSize+2
stz dynHandle no handle, yet
stz dynHandle+2
stz dynStart initialize the field
stz dynStart+2
jsr ExpandDynamicBuffer get an initial buffer
add4 dy,#5 create space for the lConst opcode
ldy #6 insert the 8 leading zeros
lda #0
pr2 sta [dy],Y
dey
dey
bpl pr2
sub2 dynSize,#13
add4 dy,#8
lda lastLoadNumber get a segment number
inc A
sta lastLoadNumber
sta dynSegment
rts
end
****************************************************************
*
* ExpandDictBuffer - expand the dictionary buffer
*
* Inputs:
* loadDict - handle of the dictionary buffer, nil for none
* loadDictSize - size of the dictionary buffer
*
* Outputs:
* loadDict - handle of the dictionary buffer
* loadDictStart - start of the dictionary buffer
* loadDictSize - size of the dictionary buffer
* dp - start of the dictionary buffer
*
* Notes:
* Other than dp, direct page is not disturbed.
*
****************************************************************
*
ExpandDictBuffer start
using Common
using OutCommon
lda loadDict if there is no buffer then
ora loadDict+2
bne lb1
la loadDictSize,dictGrowSize set the dictionary size
pha get a new buffer
pha
ph4 #dictGrowSize
ph2 userID
ph2 #$8000
ph4 #0
_NewHandle
jcs oom
pl4 loadDict
stz loadDP loadDP = 0
stz loadDP+2
brl lb2 else
lb1 sub4 dp,loadDictStart,loadDP get the displacement
ph4 loadDict unlock the handle
_HUnlock
pha get the current handle size
pha
ph4 loadDict
_GetHandleSize
clc set the new size
lda 1,S
adc #dictGrowSize
sta 1,S
lda 3,S
adc #^dictGrowSize
sta 3,S
ph4 loadDict expand the buffer
_SetHandleSize
bcs oom
ph4 loadDict lock the handle
_HLock
add2 loadDictSize,#dictGrowSize update the free space
lb2 anop endif
move4 loadDict,dp dereference the handle
ldy #2
lda [dp]
sta loadDictStart
lda [dp],Y
sta loadDictStart+2
add4 loadDictStart,loadDP,dp set dp
rts
oom lda #5
jmp TermError
end
****************************************************************
*
* ExpandDynamicBuffer - expand the dynamic segment buffer
*
* Inputs:
* dynHandle - handle of the buffer, nil for none
* dynBuffSize - size of the buffer
* synSize - bytes left in the current buffer
* dy - pointer to the current buffer
* dynStart - start of the buffer
*
* Outputs:
* dynHandle - handle of the buffer, nil for none
* dynBuffSize - size of the buffer
* synSize - bytes left in the current buffer
* dy - pointer to the current buffer
* dynStart - start of the buffer
*
****************************************************************
*
ExpandDynamicBuffer private
using Common
using OutCommon
lda dynHandle if there is no buffer then
ora dynHandle+2
bne lb1
pha get a new buffer
pha
ph4 #dynGrowSize
ph2 userID
ph2 #$8000
ph4 #0
_NewHandle
jcs oom
pl4 dynHandle
lla dynBuffSize,dynGrowSize set the size
bra lb2 else
lb1 ph4 loadDict unlock the handle
_HUnlock
add4 dynBuffSize,#dynGrowSize get the new size
ph4 dynBuffSize set the new size
ph4 dynHandle expand the buffer
_SetHandleSize
bcs oom
ph4 dynHandle lock the handle
_HLock
lb2 anop endif
add2 dynSize,#dynGrowSize update the free space
sub4 dy,dynStart convert dy to a displacement
move4 dynHandle,r0 dereference the handle
ldy #2
lda [r0]
sta dynStart
lda [r0],Y
sta dynStart+2
add4 dy,dynStart set dy
rts
oom lda #5
jmp TermError
end
****************************************************************
*
* ExpressLoad - Handle express loading
*
* Inputs:
* express - is the program express loaded?
*
****************************************************************
*
ExpressLoad private
using OutCommon
using Common
;
; Sort the segments by number
;
lda #1 set the initial segment number
sta expressSegment
stz r0 nothing in the output list
stz r2
sn1 move4 loadList,r8 for each segment number
sn2 lda r8 for each segment
ora r10
beq sn4
ldy #loadNumber-loadNext if this is the right segment then
lda [r8],Y
cmp expressSegment
bne sn3
jsr MoveSegment move the segment to the new list
bra sn4
sn3 ldy #2 next segment
lda [r8],Y
tax
lda [r8]
sta r8
stx r10
bra sn2
sn4 inc expressSegment next segment number
lda loadList
ora loadList+2
bne sn1
move4 r0,loadList replace the list
;
; Build the expressload segment
;
pha get memory for the lConst record
pha
mul4 lastLoadNumber,#79,r0
add4 r0,#7
ph4 r0
ph2 userID
ph2 #$8000
ph4 #0
_NewHandle
bcc ex1
lda #5
jmp TermError
ex1 pl4 r0 recover the handle
ldy #2 recover the start pointer
lda [r0]
sta expStart
lda [r0],Y
sta expStart+2
add4 expStart,#6,expOffset set the initial offset pointer
mul4 lastLoadNumber,#8,r0 set the initial map pointer
add4 r0,expOffset,expMap
mul4 lastLoadNumber,#2,r0 set the initial header pointer
add4 r0,expMap,expHeader
lda #2 start with segment 2
sta expressSegment
mul4 lastLoadNumber,#79,fMark set the initial file mark
add4 fMark,#67+5+4+2+1
;
; Add all static segments to the expressload segment
;
stz r0 nothing in the output list
stz r2
st1 move4 loadList,r8 for each segment do
st2 lda r8
ora r10
beq dy1
ldy #loadType-loadNext if it is a static segment then
lda [r8],Y
bmi st3
jsr AddSegment add the segment to the express list
bra st1 loop
st3 ldy #2 next segment
lda [r8],Y
tax
lda [r8]
sta r8
stx r10
bra st2
;
; Add all remaining segments to the expressload segment
;
dy1 lda loadList for each segment do
ora loadList+2
beq dn1
move4 loadList,r8 add the segment to the express list
jsr AddSegment
bra dy1
;
; Adjust the dynamic segment number
;
dn1 anop
lda dynSegment get the old segment number
beq fe1 skip if there isn't one
dec A set its mapped segment
asl A
tay
lda [expMap],Y
sta dynSegment set the new segment number
;
; Finish off the express record
;
fe1 move4 r0,loadList replace the load list pointer
lda #0 put and end mark after the record
short M
sta [expHeader]
long M
ldy #2 zero the reserved space for the link
sta [expStart]
sta [expStart],Y
ldy #4 set the number of segments
lda lastLoadNumber
dec A
sta [expStart],Y
;
; Write the expressload segment
;
! set the size of the segment
sub4 expHeader,expStart,length
add4 length,#headerEnd-header+1,byteCnt
move4 length,length2 set the length of the lCost record
lda keepRefnum write the header
sta wrRefnum
sta wsRefnum
OSWrite wrRec
bcs lb1
move4 expStart,wsBuff write the body
add4 length,#1,wsLen
OSWrite wsRec
bcs lb1
rts
lb1 lda #12
jmp TermError
;
; Local data
;
wsRec dc i'4' write the body
wsRefnum ds 2
wsBuff ds 4
wsLen ds 4
ds 4
wrRec dc i'4' write the segment header
wrRefnum ds 2
da 'header'
dc i4'headerEnd-header'
ds 4
header anop segment header model
byteCnt ds 4 length of the segment, in bytes
dc i4'0' reserved space at the end of the segment
length ds 4 length of the segment
dc i1'0' undefined
dc i1'0' label length
dc i1'4' number length
dc i1'2' OMF version
dc i4'$10000' bank size
dc i'$8001' segment kind
dc i'0' undefined
dc i4'0' origin
dc i4'0' alignment factor
dc i1'0' numSex; set to LSB first
dc i1'0' undefined
dc i'1' segment number
dc i4'0' entry point
dc i'ldName-header' disp to the segment name
dc i'data-header' disp to the segment image
ldName dc 10c' ' load segment name; unused in load segs
dc i1'12' length of the segment name
dc c'~ExpressLoad' segment name
data dc i1'$F2' lConst header
length2 ds 4
headerEnd anop
end
****************************************************************
*
* FindLoadSegment - find the proper load segment for a file
*
* Inputs:
* loadNamePtr - pointer to the load segment name
* segOrg - origin for this segment
* segAlign - alignment for this segment
* segType - type for this segment
* segBanksize - banksize for this segment
*
* Outputs:
* loadNumber - load segment number
*
* Additional outputs if pass = 2:
* op - pointer to the next output segment byte
* dp - pointer to the next dictionary segment byte
* dictSize - remaining bytes in the dictionary segment
* dictStart - pointer to the first byte in the dictionary
*
****************************************************************
*
FindLoadSegment start
using Common
using OutCommon
lda loadNumber if there is an existing segment then
bmi lb3
move4 loadNamePtr,r0 if we need this segment then
ldy #nameSize-2
lb1 lda [r0],Y
cmp loadName,Y
bne lb2
dey
dey
bpl lb1
move4 pc,loadPC save the program counter
jsr Pass2Prep make sure we are "pass 2 ready"
jsr CheckHeader check header parameters
rts return
lb2 jsr SaveSegment save the current segment info
lb3 move4 loadList,r0 find the correct segment
move4 loadNamePtr,r8
lb4 lda r0
ora r2
beq lb6
add4 r0,#loadName-loadNext,r4
ldy #nameSize-2
lb5 lda [r4],Y
cmp [r8],Y
bne lb5a
dey
dey
bpl lb5
jsr GetSegment recover the segment
jsr CheckHeader check header parameters
rts
lb5a ldy #2 next segment
lda [r0],Y
tax
lda [r0]
sta r0
stx r2
bra lb4
lb6 jsr NewSegment create a new segment
jsr CheckHeader
rts
end
****************************************************************
*
* FinishLconst - finish the current lconst record
*
* Inputs:
* op - current ptr in buffer
* opst - op at the start of this record
*
* Outputs:
* opst - set to op
*
****************************************************************
*
FinishLConst start
sub4 op,opSt,r0
sub4 r0,#5
lda #$F2
sta [opSt]
ldy #1
lda r0
sta [opSt],Y
lda r2
iny
iny
sta [opSt],Y
move4 op,opSt
rts
end
****************************************************************
*
* GetSegment - get a segment from storage
*
* Inputs:
* r0 - pointer to the segment to get
* pass - current pass number
*
* Outputs:
* loadNext... - filled in
* pc - set to last value
* op,opst,dp,dpSize - set as appropriate
*
****************************************************************
*
GetSegment private
using Common
using OutCommon
ldy #loadSize-2 recover the segment
lb0 lda [r0],Y
sta loadNext,Y
dey
dey
bpl lb0
lda loadSeg if there is a segment buffer then
ora loadSeg+2
beq lb1
ph4 loadSeg lock the buffer
_HLock
move4 loadSeg,r0 dereference the segment
ldy #2
lda [r0]
sta loadSegStart
lda [r0],Y
sta loadSegStart+2
add4 loadOp,loadSegStart,op set the segment pointer
add4 loadOpSt,loadSegStart,opst set the lConst pointer
bra lb3 else if pass = 2 then
lb1 lda pass
cmp #2
bne lb3
move4 loadPC,pc save the program counter
jsr Pass2Prep prepare for pass2
lb3 anop endif
move4 loadPC,pc reset the program counter
lda loadDict if there is a dictionary then
ora loadDict+2
beq lb4
ph4 loadDict lock the buffer
_HLock
move4 loadDict,r0 dereference the segment
ldy #2
lda [r0]
sta loadDictStart
lda [r0],Y
sta loadDictStart+2
add4 loadDp,loadDictStart,dp set the segment pointer
lb4 lda loadLast break the back link
ora loadLast+2
beq lb5
move4 loadLast,r0
ldy #2
lda loadNext
sta [r0]
lda loadNext+2
sta [r0],Y
bra lb6
lb5 move4 loadNext,loadList
lb6 lda loadNext break the forward link
ora loadNext+2
beq lb7
move4 loadNext,r0
ldy #loadLast-loadNext
lda loadLast
sta [r0],Y
iny
iny
lda loadLast+2
sta [r0],Y
lb7 rts
end
****************************************************************
*
* HexVariable - convert an OS string to a value
*
* Inputs:
* r0 - pointer to the shell variable value
*
* Outputs:
* C - set if all characters are hex digits, else clear
* X-A - value (if C set); least sig. 32 bits only
*
****************************************************************
*
HexVariable private
lda [r0] get a loop counter
sta r12
stz r8 set the initial value
stz r10
add4 r0,#2,r4 get a character pointer
lda [r4] the first char must be '$'
and #$00FF
cmp #'$'
bne lb3
inc4 r4
dec r12
beq lb2a
lb1 lda [r4] if the character is not a digit then
and #$00FF return false
cmp #'0'
blt lb3
cmp #'9'+1
blt lb1a
and #$005F
cmp #'F'+1
bge lb3
cmp #'A'
blt lb3
lb1a pha r8 = r8*16 + value(r4^)
mul4 r8,#16
pla
and #$007F
cmp #'9'+1
blt lb1b
sbc #7
lb1b and #$000F
clc
adc r8
sta r8
bcc lb2
inc r10
lb2 inc4 r4 loop
dec r12
bne lb1
lb2a lda r8 return value
ldx r10
sec
rts
lb3 clc return false
rts
end
****************************************************************
*
* InitOut - initialize the output buffer variables
*
****************************************************************
*
InitOut start
using Common
using OutCommon
lda #-1 no load segment is active
sta loadNumber
stz lastLoadNumber no load segments created
stz loadList no load segments in the list
stz loadList+2
stz dynSegment no dynamic segment
rts
end
****************************************************************
*
* IsDynamic - is the segment dynamic?
*
* Inputs:
* A - segment to check
*
* Outputs:
* C - set if the segment is dynamic, else clear
*
****************************************************************
*
IsDynamic start
using OutCommon
cmp loadNumber if A = current segment then
bne lb2
lda loadType return dynamic(loadType)
lb0 bpl lb1
sec
rts
lb1 clc
rts
lb2 sta r4 save the segment number
move4 loadList,r0 for each segment in the list do
lb3 lda r0
ora r2
beq lb1
ldy #loadNumber-loadNext if this is the correct segment then
lda [r0],Y
cmp r4
bne lb4
ldy #loadType-loadNext return dynamic(r0^.loadType)
lda [r0],Y
bra lb0
lb4 ldy #2 next segment
lda [r0],Y
tax
lda [r0]
sta r0
stx r2
bra lb3
end
****************************************************************
*
* JumpTable - create/reuse a jump table entry
*
* Inputs:
* expValue - disp into the dynamic segment
* expSegment - dynamic segment number
* shiftFlag - shift flag for the expression
*
* Outputs:
* expValue - disp into the segment buffer
* expSegment - dynamic segment number
*
****************************************************************
*
JumpTable start
using OutCommon
using ExpCommon
userID equ 0 disp to the user ID field
file equ 2 disp to the file number
seg equ 4 disp to the segment number
offset equ 6 disp to the offset (expr value)
jsl equ 10 disp to the jsl to the loader
length equ 14 length of a record
header equ 8+5 bytes in the buffer header
add4 dynStart,#header,r0 check for an existing entry
lb1 cmpl r0,dy
bge lb3
ldy #seg
lda [r0],Y
cmp expSegment
bne lb2
ldy #offset
lda [r0],Y
cmp expValue
bne lb2
iny
iny
lda [r0],Y
cmp expValue+2
beq lb5
lb2 add4 r0,#length
bra lb1
lb3 lda dynSize no existing entry; create a new one
cmp #length
bge lb4
jsr ExpandDynamicBuffer
lb4 move4 dy,r0
add4 dy,#length
lda #0
sta [r0]
ldy #file
lda #1
sta [r0],Y
ldy #seg
lda expSegment
sta [r0],Y
ldy #offset
lda expValue
sta [r0],Y
iny
iny
lda expValue+2
sta [r0],Y
ldy #jsl
lda #$0022
sta [r0],Y
iny
iny
lda #0
sta [r0],Y
lb5 sub4 r0,dynStart,expValue set the new expValue
add4 expValue,#jsl-5
lda dynSegment set the new segment value
sta expSegment
lda shiftFlag check for an illegal shift
beq lb6
ph4 #0
ph2 #20
jsr Error
lb6 rts
end
****************************************************************
*
* KeepFile - write the segments to the file
*
* Inputs:
* loadList - head of the load list
* kname - pointer to the output name
*
****************************************************************
*
KeepFile start
using Common
using OutCommon
lda #1 set the segment number
sta segment
jsr CreateFile create/check the file
move4 kname,opPathname open the file
OSOpen opRec
bcc lb0
err12 lda #12
jmp TermError
lb0 lda opRefnum save the keep refnum
sta keepRefnum
sta clRefnum
sta mkRefnum
OSSet_EOF mkRec erase the old file contents
bcs err12
lda compact if compact then
beq lb0a
jsr DoCompact compact the dictionaries
lb0a jsr SaveSegment save the current segment
jsr CreateDynamicSegment create the dynamic segment
lda express if express then
beq lb1
jsr ExpressLoad write the expressload segment (if any)
inc segment first segment to process is 2
lb1 move4 loadList,r0 find the proper segment
lb2 ldy #loadNumber-loadNext
lda [r0],Y
cmp segment
beq lb3
ldy #2
lda [r0],Y
tax
lda [r0]
sta r0
stx r2
ora r2
bne lb2
OSClose clRec none left -- close the file
move4 loadList,r0 get a segment back
jsr GetSegment
jsr SetFileType
rts
lb3 jsr GetSegment get and lock the segment
jsr AddEnd add an end record to the dictionary
jsr FinishLConst finish the current lconst record
lda express if express then
beq lb4
jsr Remap remap the segment numbers
bra lb5 else
lb4 jsr OptimizeDS optimize the DS, LConst records
lb5 jsr WriteHeader write the header
jsr WriteBody write the segment image
jsr WriteDictionary write the dictionary
jsr SaveSegment save the segment
inc segment next segment
bra lb1
;
; Local data
;
clRec dc i'1' close record
clRefnum ds 2
opRec dc i'2' open record
opRefnum ds 2
opPathname ds 4
mkRec dc i'3' set mark record
mkRefnum ds 2
dc i'0'
dc i4'0'
segment ds 2 segment number
end
****************************************************************
*
* MoveSegment - move a segment record
*
* Inputs:
* r0 - pointer to the head of the new list
* r4 - pointer to the last record in the new list (if r0 <> nil)
* r8 - pointer to the record to move
* loadList - pointer to the first record in the old list
*
* Outputs:
* input pointers are modified
*
****************************************************************
*
MoveSegment private
using OutCommon
;
; Break the back link
;
ldy #loadLast-loadNext if r8^.last = nil then
lda [r8],Y
iny
iny
ora [r8],Y
bne lb1
ldy #2 loadList := r8^.next
lda [r8]
sta loadList
lda [r8],Y
sta loadList+2
bra lb2 else
lb1 ldy #loadLast-loadNext r12 := r8^.last
lda [r8],Y
sta r12
iny
iny
lda [r8],Y
sta r14
ldy #2 r12^.next := r8^.next
lda [r8]
sta [r12]
lda [r8],Y
sta [r12],Y
lb2 anop endif
;
; Break the forward link
;
ldy #2 if r8^.next <> nil then
lda [r8]
ora [r8],Y
beq lb3
lda [r8] r12 := r8^.next
sta r12
lda [r8],Y
sta r14
ldy #loadLast-loadNext r12^.last := r8^.last
lda [r8],Y
sta [r12],Y
iny
iny
lda [r8],Y
sta [r12],Y
lb3 anop endif
;
; Add the record to the new list
;
ldy #2 r8^.next := nil
lda #0
sta [r8]
sta [r8],Y
lda r0 if r0 = nil then
ora r2
bne lb4
ldy #loadLast-loadNext r8^.last := nil
lda #0
sta [r8],Y
iny
iny
sta [r8],Y
move4 r8,r0 r0 := r8
bra lb5 else
lb4 ldy #2 r4^.next := r8
lda r8
sta [r4]
lda r10
sta [r4],Y
ldy #loadLast-loadNext r8^.last := r4
lda r4
sta [r8],Y
iny
iny
lda r6
sta [r8],Y
lb5 anop endif
move4 r8,r4 r4 := r8
rts
end
****************************************************************
*
* NamedVariable - see if the variable is a file type
*
* Inputs:
* r0 - pointer to the shell variable value
*
* Outputs:
* C - set if we have a match, else clear
* X-A - variable value (if C is set)
*
****************************************************************
*
NamedVariable private
lda [r0] if length <> 3 then
cmp #3
bne lb3 return false
lda #nameEnd-name-3 index into the name array
sta r4
lda #$BA initial file number
sta r6
lb1 ldx r4 check for match
ldy #2
short M
lb1a lda [r0],Y
cmp name,X
beq lb1b
and #$5F
cmp name,X
bne lb2
lb1b inx
iny
cpy #5
bne lb1a
long M
lda r6 return the file type
ldx #0
sec
rts
lb2 long M no match - loop
dec r6
sec
lda r4
sbc #3
sta r4
bpl lb1
lb3 clc return false
rts
;
; Local data
;
name dc c'S16' file type mnemonics
dc c'RTL'
dc c'EXE'
dc c'PIF'
dc c'TIF'
dc c'NDA'
dc c'CDA'
dc c'TOL'
nameEnd anop
end
****************************************************************
*
* NewSegment - create a new segment record
*
* Inputs:
* loadNamePtr - pointer to the load name
* lastLoadNumber - load number for the last segment created
*
* Outputs:
* loadNumber - number of this load segment
* loadName - name of the load segment
* pc - 0
* * - all other load record variables are set to 0
*
****************************************************************
*
NewSegment private
using Common
using OutCommon
move #0,loadNext,#loadSize
move4 loadNamePtr,r0
ldy #nameSize-2
lb1 lda [r0],Y
sta loadName,Y
dey
dey
bpl lb1
inc lastLoadNumber
lda lastLoadNumber
sta loadNumber
stz pc
stz pc+2
rts
end
****************************************************************
*
* OptimizeDS - optimize DS and LConst records
*
* This subroutine removes LConst records that have a length
* of zero, and combines adjacent DS records.
*
* Inputs:
* op - ptr to the end of the load segment body
* opst - copy of op
* loadSegStart - start of the load segment body
*
* Outputs:
* op - ptr to the end of the load segment body
* opst - copy of op
*
****************************************************************
*
OptimizeDS private
using Common
using OutCommon
LConst equ $F2 long contanst op-code
DS equ $F0 DS op-code
lda loadSegStart r0 = to address
ldx loadSegStart+2 r4 = from address
sta r0
stx r2
sta r4
stx r6
stz r8 r8 = false {r0, r4 are the same}
lb2 cmpl r4,op while r4 <> op do
jge lb12
lda [r4] if r4^ = LConst then
and #$00FF
cmp #LConst
bne lb3
ldy #1 if length = 0 then
lda [r4],Y
ldy #3
ora [r4],Y
bne lb4
add4 r4,#5 skip the record
lda #1 r8 := true
sta r8
bra lb2
lb3 add4 r4,#5,r10 else {if r4^ = DS then}
lb3a cmpl r10,op if (r10 = r4+5) < op then
bge lb4
lda [r10] if r10^ = LConst then
and #$00FF
cmp #LConst
bne lb3b
ldy #1 if r10^.length = 0 then
lda [r10],Y
ldy #3
ora [r10],Y
bne lb4
add4 r10,#5 skip the lconst
lda #1 r8 := true
sta r8
bra lb3a try again
lb3b ldy #1 else if r10^ = DS then
clc r10^.length += r4^.length
lda [r10],Y
adc [r4],Y
sta [r10],Y
ldy #3
lda [r10],Y
adc [r4],Y
sta [r10],Y
move4 r10,r4 r4 := r10
lda #1 r8 := true
sta r8
bra lb3 try again
lb4 lda r8 {move the record to the new spot}
beq lb10 if the record needs to be moved then
lda [r4] if r4^ = LConst then
and #$00FF
cmp #Lconst
bne lb9
ldy #1
lda [r4],Y
sta r10
ldy #3
lda [r4],Y
sta r12
add4 r10,#5
ldx r12
beq lb6
ldy #0
lb5 lda [r4],Y
sta [r0],Y
iny
iny
bne lb5
inc r2
inc r6
dex
bne lb5
lb6 lda r10
beq lb10
ldy #0
lsr A
tax
bcc lb7
short M
lda [r4]
sta [r0]
long M
iny
lb7 txa
beq lb10
lb8 lda [r4],Y
sta [r0],Y
iny
iny
dex
bne lb8
bra lb10 else {if r4^ = DS then}
lb9 lda [r4]
sta [r0]
ldy #2
lda [r4],Y
sta [r0],Y
iny
lda [r4],Y
sta [r0],Y
lb10 lda [r0] {next record}
and #$00FF
cmp #LConst
bne lb11
clc
ldy #1
lda [r0],Y
adc r4
tax
ldy #3
lda [r0],Y
adc r6
sta r6
stx r4
clc
ldy #1
lda [r0],Y
adc r0
tax
ldy #3
lda [r0],Y
adc r2
sta r2
stx r0
lb11 add4 r0,#5
add4 r4,#5
brl lb2 endwhile
lb12 lda r0 op = opst = r0
ldx r2
sta op
stx op+2
sta opst
stx opst+2
rts
end
****************************************************************
*
* Pass2Prep - prepare a buffer for the first call to pass2
*
* Inputs:
* loadPass2 - has the buffer been prepared for pass 2?
*
****************************************************************
*
Pass2Prep private
using Common
using OutCommon
lda pass if this is not pass 2
cmp #2
bne lb1
lda loadPass2 or the buffer has already been prepared
beq lb2
lb1 rts return
lb2 add4 length,loadPC update the length of the program
lda loadBanksize check for a bank overflow
ora loadBanksize+2
beq lb2a
cmpl loadPC,loadBanksize
blt lb2a
ph4 #0
ph2 #18
jsr Error
lb2a pha get memory for the output buffer
pha
clc
lda loadPC
adc #5
tax
lda loadPC+2
adc #0
pha
phx
ph2 userID
ph2 #$8000
ph4 #0
_NewHandle
bcc lb3
lda #5
jmp TermError
lb3 pl4 loadSeg
move4 loadSeg,r0 dereference the segment
ldy #2
lda [r0]
sta loadSegStart
sta op
sta opst
lda [r0],Y
sta loadSegStart+2
sta op+2
sta opst+2
add4 op,#5 skip the space for the lConst header
stz loadPC loadPC = 0
stz loadPC+2
stz loadOrg loadOrg = 0
stz loadOrg+2
stz loadAlign loadAlign = 0
stz loadAlign+2
stz pc pc = 0
stz pc+2
inc loadPass2 loadPass2 = true
rts
end
****************************************************************
*
* PrintSegmentInfo - print the segment statistics
*
* Inputs:
* loadList - head of the load list
*
****************************************************************
*
PrintSegmentInfo start
using Common
using OutCommon
puts #'Segment Information:',cr=t write segment header
putcr
puts #' Number Name Type Length Org',cr=t
putcr
jsr SaveSegment save the current segment
lda #1 set the segment number
sta segment
lda kflag
beq lb1
lda express
beq lb1
inc segment
lb1 move4 loadList,r0 find the proper segment
lb2 ldy #loadNumber-loadNext
lda [r0],Y
cmp segment
beq lb3
ldy #2
lda [r0],Y
tax
lda [r0]
sta r0
stx r2
ora r2
bne lb2
move4 loadList,r0 done - get a segment back
jsr GetSegment
rts
lb3 put2 segment,#6 print the segment number
putc #' ',#6
inc segment
ldy #loadName-loadNext print the segment name
short I,M
ldx #0
lb3a lda [r0],Y
beq lb3b
sta name+1,X
iny
inx
cpx #10
bne lb3a
lb3b stx name
sec
lda #13
sbc name
sta fw
long I,M
puts name-1
putc #'$',fw print the type
pea 0
ldy #loadType-loadNext
lda [r0],Y
pha
ph2 #2
ph2 #0
jsr PrintHex
puts #' $' print the length
ldy #loadPC-loadNext+2
lda [r0],Y
pha
dey
dey
lda [r0],Y
pha
ph2 #8
ph2 #0
jsr PrintHex
puts #' '
ldy #loadORG-loadNext+2 print the org
lda [r0],Y
sta r6
dey
dey
lda [r0],Y
sta r4
ora r6
beq lb4
putc #'$'
ph4 r4
ph2 #8
ph2 #0
jsr PrintHex
putcr
brl lb1
lb4 puts #'Relocatable',cr=t
brl lb1
segment ds 2 segment number
name dc i1'10',10c' ' segment name
fw dc i'0' field width for spaces after name
end
****************************************************************
*
* Remap - remap the segment numbers in interseg references
*
* Inputs:
* loadDictStart - start of the dictionary
*
* Notes:
* This remapping is needed when express loading a segment
* changes the segment numbers.
*
****************************************************************
*
Remap private
using OutCommon
move4 loadDictStart,r0
lb1 lda [r0] get an op code
and #$00FF
jeq lb5 quit if it is the end
cmp #$E2 skip reloc
bne lb2
add4 r0,#11
bra lb1
lb2 cmp #$E3 remap interseg
bne lb3
ldy #9
lda [r0],Y
dec A
asl A
tay
lda [expMap],Y
ldy #9
sta [r0],Y
add4 r0,#15
bra lb1
lb3 cmp #$F5 skip cReloc
bne lb4
add4 r0,#7
bra lb1
lb4 cmp #$F7 remap Super
jne lb4a
ldy #5 if r0^.type = 2 {interseg1} then
lda [r0],Y
and #$00FF
cmp #2
jne sp7
add4 r0,#6,r4 r4 = disp to 1st subrecord
sec r8 = page offset
lda loadSegStart
sbc #$0100-7
sta r8
lda loadSegStart+2
sbc #0
sta r10
ldy #1 r12 = # bytes to process
lda [r0],Y
dec A
sta r12
sp1 lda [r4] repeat
and #$00FF if r4^ & $80 <> 0 then
bit #$0080
beq sp4
and #$007F add in the page displacement
bne sp2
lda #$0080
sp2 xba
clc
adc r8
sta r8
bcc sp3
inc r10
sp3 inc4 r4 ++r4
dec r12 --r12
bra sp6 next entry
sp4 sta r14 else r14 = #bytes + 1
inc4 r4 skip the count byte
dec r12
lda r8 new page
clc
adc #$100
sta r8
bcc sp5
inc r10
sp5 short I,M repeat
lda [r4] remap one segment
tay
tax
lda [r8],Y
dec A
asl A
tay
lda [expMap],Y
txy
sta [r8],Y
long I,M
inc4 r4 ++r4
dec r12 --r12
dec r14 --r14
bpl sp5 until r14 < 0
sp6 lda r12 until r12 = 0
bne sp1
bra sp9
sp7 cmp #14 else if r0^.type in [14..25] then
blt sp9
cmp #26
bge sp8
short I,M remap the segment number
sec
sbc #14
asl A
tay
lda [expMap],Y
clc
adc #13
ldy #5
sta [r0],Y
long I,M
bra sp9 else if r0^.type in [26..37] then
sp8 short I,M remap the segment number
sec
sbc #26
asl A
tay
lda [expMap],Y
clc
adc #25
ldy #5
sta [r0],Y
long I,M
sp9 anop endif
ldy #1 skip the record
clc
lda [r0],Y
adc r0
tax
iny
iny
lda [r0],Y
adc r2
sta r2
stx r0
add4 r0,#5
brl lb1
lb4a short I,M remap cInterseg
ldy #5
lda [r0],Y
dec A
asl A
tay
lda [expMap],Y
ldy #5
sta [r0],Y
long I,M
add4 r0,#8
brl lb1
lb5 rts
end
****************************************************************
*
* RemapJumpTable - remap the segment numbers in the jump table
*
* Inputs:
* loadSegStart - start of the jump table buffer
*
* Notes:
* This remapping is needed when express loading a segment
* changes the segment numbers.
*
****************************************************************
*
RemapJumpTable private
using OutCommon
add4 loadSegStart,#8+5,r0
lb1 ldy #2 quit if file = 0
lda [r0],Y
beq lb2
ldy #4 remap a segment
lda [r0],Y
dec A
asl A
tay
lda [expMap],Y
ldy #4
sta [r0],Y
add4 r0,#14
bra lb1
lb2 rts
end
****************************************************************
*
* SaveSegment - save the current load segment record
*
****************************************************************
*
SaveSegment private
using OutCommon
move4 loadList,loadNext insert the record in the linked list
stz loadLast
stz loadLast+2
move4 pc,loadPC save the current pc
lda loadSeg if there is a segment buffer then
ora loadSeg+2
beq lb1
sub4 op,loadSegStart,loadOp save the op displacement
sub4 opst,loadSegStart,loadOpSt save the opst displacement
ph4 loadSeg unlock the segment buffer
_HUnlock
lb1 lda loadDict if there is a dictionary buffer then
ora loadDict+2
beq lb2
sub4 dp,loadDictStart,loadDP save the dp displacement
ph4 loadDict unlock the dictionary buffer
_HUnlock
lb2 lda loadPtr if there is no spot reserved then
ora loadPtr+2
bne lb3
ph2 #loadSize get some space
jsr GetSymbolMemory
sta loadPtr
stx loadPtr+2
lb3 move4 loadPtr,r0 save the record
ldy #loadSize-2
lb4 lda loadNext,Y
sta [r0],Y
dey
dey
bpl lb4
lda loadList if loadList <> nil then
ora loadList+2
beq lb5
move4 loadList,r0 loadList^.loadLast = loadPtr
ldy #loadLast-loadNext
lda loadPtr
sta [r0],Y
iny
iny
lda loadPtr+2
sta [r0],Y
lb5 move4 loadPtr,loadList point the head to this segment
rts
end
****************************************************************
*
* SetFileType - set the file type and aux type
*
* Inputs:
* kname - keep name pointer
*
****************************************************************
*
SetFileType private
;
; Get the current file info
;
move4 kname,giPathName
OSGet_File_Info giRec
;
; Set the file type
;
ph4 #FileType read the file type variable
jsr ReadVariable
sta r0
stx r2
lda [r0] if the variable exists then
beq lb2
jsr NamedVariable handle a named variable
bcs lb1
jsr DecimalVariable handle a decimal variable
bcs lb1
jsr HexVariable handle a hex variable
bcs lb1
err13 ph4 #0 flag a bad file name error
ph2 #13
jsr Error
bra lb2
lb1 txy check for a file type out of range
bne err13
cmp #$B3
blt err13
cmp #$BF+1
bge err13
sta giFileType set the file type
bra lb3 else
lb2 lda #EXE use the default file type
sta giFileType
lb3 anop endif
ph4 r0 Free(r0)
jsr Free
;
; Set the aux type
;
ph4 #AuxType read the file type variable
jsr ReadVariable
sta r0
stx r2
lda [r0] if the variable exists then
beq ax2
jsr DecimalVariable handle a decimal variable
bcs ax1
jsr HexVariable handle a hex variable
bcs ax1
ph4 #0 flag a bad file name error
ph2 #19
jsr Error
bra ax2
ax1 stx giAuxType+2 save the aux type
sta giAuxType
bra ax3 else
ax2 lla giAuxType,$100 use the default aux type
ax3 anop endif
ph4 r0 Free(r0)
jsr Free
;
; Update the file info
;
OSSet_File_Info giRec
bcs fi1
rts
fi1 lda #12
jmp TermError
;
; Local data
;
giRec dc i'4' get/set file info record
giPathname ds 4
ds 2
giFileType ds 2
giAuxType ds 4
FileType dos KeepType filetype shell variable name
AuxType dos AuxType auxtype shell variable name
end
****************************************************************
*
* WriteBody - write the body of a load segment
*
* Inputs:
* loadNext... - load segment record
* keepRefnum - keep file reference number
*
****************************************************************
*
WriteBody private
using Common
using OutCommon
lda express if express then
beq lb0
lda loadNumber if loadNumber = dynSegment then
cmp dynSegment
bne lb0
jsr RemapJumpTable remap the dynamic jump table
lb0 move4 loadSegStart,wrBuff set the buffer address
sub4 op,loadSegStart,wrLength set the length
lda keepRefnum set the refnum
sta wrRefnum
OSWrite wrRec write the segment
bcs lb1
rts
lb1 lda #12
jmp TermError
;
; Local data
;
wrRec dc i'4' write the segment
wrRefnum ds 2
wrBuff ds 4
wrLength ds 4
ds 4
end
****************************************************************
*
* WriteDictionary - write the dictionary for a load segment
*
* Inputs:
* loadNext... - load segment record
* keepRefnum - keep file reference number
*
****************************************************************
*
WriteDictionary private
using Common
using OutCommon
sub4 dp,loadDictStart,wrLength set the length
move4 loadDictStart,wrBuff set the buffer address
lda keepRefnum set the refnum
sta wrRefnum
OSWrite wrRec write the segment
bcs lb1
rts
lb1 lda #12
jmp TermError
;
; Local data
;
wrRec dc i'4' write the segment
wrRefnum ds 2
wrBuff ds 4
wrLength ds 4
ds 4
end
****************************************************************
*
* WriteHeader - write the segment header for a load segment
*
* Inputs:
* loadNext... - load segment record
* keepRefnum - keep file reference number
*
* Notes:
* This subroutine also writes the lConst opcode and
* length field for the code image that will be written
* by WriteBody.
*
****************************************************************
*
WriteHeader private
using OutCommon
! set the size of the segment
sub4 opst,loadSegStart,byteCnt
add4 byteCnt,#headerEnd-header
sub4 dp,loadDictStart,r0
add4 byteCnt,r0
move4 loadPC,length set the length of the segment
move4 loadBankSize,bankSize set the bankSize of the segment
lda loadType set the kind of the segment
sta kind
move4 loadORG,org set the org of the segment
move4 loadAlign,align set the alignment factor of the segment
lda loadNumber set the segment number
sta segNum
move loadName,segName,#nameSize set the segment name
lda keepRefnum write the header
sta wrRefnum
OSWrite wrRec
bcs lb1
rts
lb1 lda #12
jmp TermError
;
; Local data
;
wrRec dc i'4' write the segment
wrRefnum ds 2
da 'header'
dc i4'headerEnd-header'
ds 4
header anop segment header model
byteCnt ds 4 length of the segment, in bytes
dc i4'0' reserved space at the end of the segment
length ds 4 length of the segment
dc i1'0' undefined
dc i1'0' label length
dc i1'4' number length
dc i1'2' OMF version
bankSize ds 4 bank size
kind ds 2 segment kind
dc i'0' undefined
org ds 4 origin
align ds 4 alignment factor
dc i1'0' numSex; set to LSB first
dc i1'0' undefined
segnum ds 2 segment number
ds 4 entry point
dc i'ldName-header' disp to the segment name
dc i'headerEnd-header' disp to the segment image
dc i4'0' temp ORG
ldName dc 10c' ' load segment name; unused in load segs
dc i1'10' length of the segment name
segName ds 10 segment name
headerEnd anop
end
Reference in New Issue View Git Blame Copy Permalink