diff options
Diffstat (limited to 'programs/sub-suite/libc.s')
| -rw-r--r-- | programs/sub-suite/libc.s | 499 |
1 files changed, 205 insertions, 294 deletions
diff --git a/programs/sub-suite/libc.s b/programs/sub-suite/libc.s index ae35146..53e936a 100644 --- a/programs/sub-suite/libc.s +++ b/programs/sub-suite/libc.s @@ -17,12 +17,10 @@ strtoull: pla ; Get the character back. beq @end ; No, so we're done. @alpha: - sec ; Yes, so prepare for a non borrowing subtract. - sbc #'a'-10 ; Get the numeric value from this digit. + sub #'a'-10 ; Yes, so get the numeric value from this digit. bra @chkbase ; Check if the value matches the base. @digit: - sec ; Prepare for a non borrowing subtract. - sbc #'0' ; Get the numeric value from this digit. + sub #'0' ; Get the numeric value from this digit. @chkbase: cmp sp+25 ; Does the value match the base? bcs @end ; No, so we're done. @@ -30,8 +28,7 @@ strtoull: tab ; Save the digit value. lda.q sp+1 ; Get the value from the value buffer. mul sp+25 ; Multiply the value by the base. - clc ; Prepare for a non carrying add. - adc b ; Add the digit value to the total value. + add a, b ; Add the digit value to the total value. sta.q sp+1 ; Place the value in the value buffer. iny ; Increment the string index. and #0 ; Reset A. @@ -44,80 +41,72 @@ strtoull: strlen: - phy.q ; Preserve Y. - pha.q ; Set the temp variable to the argument. and #0 ; Reset A. - tay ; Reset Y. @loop: - lda (sp+1), y ; Are we at the end of the string? - beq @end ; Yes, so we're done. - iny ; No, so increment the index. - bra @loop ; Keep looping. + inc ; Increment the index. + cmp (d+a-1), #0 ; Are we at the end of the string? + bne @loop ; No, so keep looping. @end: - pla.q ; Get the argument back. - tya ; Get the return value. - ply.q ; Get the preserved value back. + dec ; Decrement the length to not include the terminator. rts ; End of strlen. strcmp: - ldb #0 ; Reset B. - tba ; Reset A. + phb.q ; Preserve B. + phx.q ; Preserve X. phy.q ; Preserve Y. + and #0 ; Reset A. + tab ; Reset B. + tax ; Reset X. tay ; Reset Y. @loop: - ldb #0 ; Set the islong flag to false. - lda (sp+25), y ; Are we at the end of the first string? + ldx #0 ; Set the islong flag to false. + mov a, (d+y) ; Are we at the end of the first string? beq cmpr ; Yes, so check if we're too short, or too long. - ldb #1 ; No, so set the islong flag to true. - cmp (sp+19), y ; Is the character of both strings, the same? + ldx #1 ; No, so set the islong flag to true. + cmp a, (s+y) ; Is the character of both strings, the same? bne cmpr ; No, so check if we're too short, or too long. iny ; Yes, so increment the index. bra @loop ; Keep looping. -strccmp: strcasecmp: - ldb #0 ; Reset B. - tba ; Reset A. + phb.q ; Preserve B. + phx.q ; Preserve X. phy.q ; Preserve Y. + and #0 ; Reset A. + tab ; Reset B. + tax ; Reset X. + inx ; Set X to 1. tay ; Reset Y. @loop: - ldb #0 ; Set the islong flag to false. - lda (sp+25), y ; Are we at the end of the first string? + dex ; Set the islong flag to false. + mov a, (d+y) ; Are we at the end of the first string? beq cmpr ; Yes, so check if we're too short, or too long. - ldb #1 ; No, so set the islong flag to true. + inx ; No, so set the islong flag to true. jsr tolower ; Convert the character of string 1 to lowercase. - phb ; Preserve the islong flag. - pha ; Preserve the converted character. - lda (sp+19), y ; Get the character of the second string. + tab ; Save the converted character. + mov a, (s+y) ; Get the character of the second string. jsr tolower ; Convert the character of string 2 to lowercase. - tab ; Place it in B. - pla ; Get the character of string 1 back. cmp b ; Is the character of both strings, the same? - plb ; Get the islong flag back. bne cmpr ; No, so check if we're too short, or too long. iny ; Yes, so increment the index. bra @loop ; Keep looping. cmpr: - lda (sp+17), y ; Are we at the end of the second string? + mov a, (s+y) ; Are we at the end of the second string? beq @islong ; Yes, so check the islong flag. @isshort: - lda (sp+25), y ; No, but are we at the end of the first string? - beq @short ; Yes, so return -1. -@islong: - cpb #1 ; Is the islong flag true? - bne @equ ; No, so return 0. -@long: - lda #1 ; Yes, so return 1. + mov a, (d+y) ; No, but are we at the end of the first string? + bne @islong ; No, so check if the islong flag is true. + lda #$FF ; Yes, so return -1. bra @end ; We are done. -@equ: - lda #0 ; Return 0. - bra @end ; We are done. -@short: - lda #$FF ; Return -1. +@islong: + cpx #1 ; Is the islong flag true? + set a, eq ; Return true if it is. @end: - ply.q ; Get the preserved value back. + ply.q ; Restore Y. + plx.q ; Restore X. + plb.q ; Restore B. rts ; End of cmpr. @@ -195,304 +184,226 @@ toupper: ; malloc: Dynamically allocate memory. -; Input: A = size in bytes to allocate. +; Input: D = size in bytes to allocate. ; Output: A = Pointer to allocated memory. -; Caller preserved registers: none. -; Callie preserved registers: Y. +; Caller preserved registers: D. +; Callie preserved registers: B, X, Y. malloc: - phy.q ; Preserve Y. - pha.q ; Preserve the size. - and #0 ; Reset A. - tay ; Reset Y. - sbs #$10 ; Allocate 2 local variables onto the stack. - lda.q sp+17 ; Get the size. - ora.d sp+21 ; Is the size zero? - beq @end ; Yes, so we're done. - lda.q sp+17 ; No, so get back the size. - clc ; Prepare for a non carrying add. - adc #ublk ; Add the size of a used block struct, to the size. - sta.q sp+17 ; Set the actual size. - lda.q heapf ; Get the first heap entry. - sta.q sp+9 ; Save it in the second local variable. - bra @checkblk ; Check the block. + phb.q ; Preserve B. + phx.q ; Preserve X. + phy.q ; Preserve Y. + xor b, b ; Reset B. + mov x, b ; Reset X. + txy ; Reset Y. + mov a, d ; Get the size. + beq @end ; The size is zero, so we're done. + add #ublk ; Add the size of a used block struct, to the size. + cmp #ublk ; Is the total size smaller than the size of a used block struct? + bcs @getheapf ; No, so get the first heap entry. +@toosmall: + lda #ublk ; Yes, so set the total size to the size of a used block struct. +@getheapf: + mov d, a ; Place the new size into the passed size. + ldb.q heapf ; Get the first heap entry. + bra @checkblk ; Check the block. @findfblk: - ldy #fblk.size ; Get the size of this free block. - lda.q (sp+9), y ; - sec ; Prepare for a non borrowing subtract. - sbc.q sp+17 ; Subtract the size of this free block, with the passed size. - bcs @blkfound ; The result is less than, or equal to the free size, so return the found block. - ldy #fblk.next ; Get the next free block. - lda.q (sp+9), y ; - sta.q sp+9 ; Set the current free block, to the next free block. + mov.q a, (b+fblk.size) ; Get the size of this free block. + sub a, d ; Subtract the size of this free block, with the passed size. + bcs @blkfound ; The result is less than, or equal to the free size, so return the found block. + mov.q b, (b+fblk.next) ; Set the current free block, to the next free block. @checkblk: - ora.d sp+13 ; Is the address of this block, zero? - bne @findfblk ; No, so keep looping. - lda.q heapptr ; Yes, so get the current top of the heap. - clc ; Prepare for a non carrying add. - adc.q sp+17 ; Add the top of the heap, with the passed size. - bcs @outofspace ; The result overflowed, so return zero. - cmp.q heapend ; Is the top of the heap, less than, or equal to the max heap size? - bcc @inctop ; Yes, so increase the current top of the heap. - beq @inctop ; + bne @findfblk ; The address of this block is non NULL, so keep looping. + mov a, d ; Get the passed size. + add.q heapptr ; Add the top of the heap, with the passed size. +; mov d, a ; Save the new size. + bcs @outofspace ; The result overflowed, so return zero. + cmp.q heapend ; Is the top of the heap, less than, or equal to the max heap size? + bcc @inctop ; Yes, so increase the current top of the heap. + beq @inctop ; @outofspace: - and #0 ; Return zero. - bra @end ; We are done. + and #0 ; Return zero. + bra @end ; We are done. @inctop: - pha.q ; Preserve heapptr + size. - lda.q heapptr ; Get the previous top of the heap. - sta.q sp+17 ; Set the current free block to the previous top of the heap. - pla.q ; Restore heapptr + size. - sta.q heapptr ; Increment the current top of the heap by the passed size. - bra @setsize ; Set the size, and start address into the used space of the block. + + ldb.q heapptr ; Set the current free block to the previous top of the heap. + sta.q heapptr ; Increment the current top of the heap by the passed size. + bra @setsize ; Set the size, and start address into the used space of the block. @blkfound: - bne @sliceblk ; The block is big enough to slice. - cmp #fblk ; Is the block big enough to slice? - bcs @sliceblk ; Yes, so slice the block. - ldy #fblk.prev ; No, so get the previous free block. - lda.q (sp+9), y ; - sta.q sp+1 ; Set the third local variable, to the previous free block. - ora.d sp+5 ; Is the previous block, set to zero? - beq @setheapf ; Yes, so set the first block. - ldy #fblk.next ; No, so get the next free block. - lda.q (sp+9), y ; - sta.q (sp+1), y ; Set the previous block's next block, to the next block. - bra @chknxtblk ; Check the next block. + bne @sliceblk ; The block is big enough to slice. + cmp #fblk ; Is the block big enough to slice? + bcs @sliceblk ; Yes, so slice the block. + mov.q x, (b+fblk.prev) ; Get the previous free block. + beq @setheapf ; The previous block is NULL, so set the first block. + ldy #fblk.next ; No, so set the offset to the next free block. + mov.q (x+y), (b+y) ; Set the previous block's next block, to the next block. + bra @chknxtblk ; Check the next block. @setheapf: - lda.q (sp+9), y ; Get the next block. - sta.q heapf ; Set the first heap entry to it. + ldy #fblk.next ; Set the offset to the next block. + mov.q heapf, (b+y) ; Set the first heap entry to the next block. @chknxtblk: - lda.q (sp+9), y ; Get the next free block. - sta.q sp+1 ; Set the third local variable to the next free block. - ora.d sp+5 ; Is the next block, zero? - beq @setheapl ; Yes, so set the least heap entry. - ldy #fblk.prev ; No, so get the current previous block. - lda.q (sp+9), y ; - sta.q (sp+1), y ; Set the next block's previous block to the current previous block. - bra @retptr ; Return the pointer. + mov.q x, (b+y) ; Get the next free block. + beq @setheapl ; The next block is NULL, so set the least heap entry. + ldy #fblk.prev ; Get the current previous block. + mov.q (x+y), (b+y) ; Set the next block's previous block to the current previous block. + bra @retptr ; Return the pointer. @setheapl: - ldy #fblk.prev ; Get the current previous block. - lda.q (sp+9), y ; - sta.q heapl ; Set the last heap entry to the current previous block. - bra @retptr ; Return the pointer. + ldy #fblk.prev ; Get the current previous block. + mov.q heapl, (b+y) ; Set the last heap entry to the current previous block. + bra @retptr ; Return the pointer. @sliceblk: - ldy #fblk.size ; Get the size of the current block. - lda.q (sp+9), y ; - sec ; Prepare for a non borrowing subtract. - sbc.q sp+17 ; Subtract the current block's size from the passed size. - sta.q (sp+9), y ; Set the current block's size to the subtracted size. - clc ; Prepare for a non carrying add. - adc.q sp+9 ; Add the current block's size to the pointer of the current block. - sta.q sp+9 ; Set the current block to the space above it (return value). + ldy #fblk.size ; Get the size of the current block. + sub.q (b+y), d ; Subtract the current block's size from the passed size. + add.q b, (b+y) ; Add the current block's size to the pointer of the current block. @setsize: - ldy #ublk.size ; Start setting the used block's size, to the passed size. - lda.q sp+17 ; Get the passed size. - sta.q (sp+9), y ; Set the used block's size to the passed size. + mov.q (b+ublk.size), d ; Set the used block's size to the passed size. @retptr: - ldy #ublk.start ; Start setting the used block's starting address, to the used block. - lda.q sp+9 ; Get the used block. - sta.q (sp+9), y ; Set the used block's starting address, to the used block. - clc ; Prepare for a non carrying add. - adc #ublk ; Return the pointer to the real memory block. + mov.q (b+ublk.start), b ; Set the used block's starting address, to the used block. + add b, #ublk ; Get the pointer to the real memory block. + tba ; Return the pointer to the real memory block. @end: - ads #$18 ; Clean up the stack frame. - ply.q ; Restore Y. - rts ; End of malloc. + ply.q ; Restore Y. + plx.q ; Restore X. + plb.q ; Restore B. + rts ; End of malloc. ; free: Free allocated memory. -; Input: A = Pointer to allocated memory. +; Input: D = Pointer to allocated memory. ; Output: none. -; Caller preserved registers: none. -; Callie preserved registers: A, B, Y. +; Caller preserved registers: D. +; Callie preserved registers: A, B, X, Y, E. free: - pha.q ; Preserve A. - phb.q ; Preserve B. - phy.q ; Preserve Y. - pha.q ; Push the pointer argument to the stack. - and #0 ; Reset A. - tay ; Reset Y. - sbs #$18 ; Allocate 3 local variables onto the stack. - lda.q sp+25 ; Get the passed pointer. - ora.d sp+29 ; Is the passed pointer NULL? - bne @getrealblk ; No, so get the real block. - bra @end ; Yes, so we're done. + pha.q ; Preserve A. + phb.q ; Preserve B. + phx.q ; Preserve X. + phy.q ; Preserve Y. + phe.q ; Preserve E. + and #0 ; Reset A. + tab ; Reset B. + tax ; Reset X. + tay ; Reset Y. + mov a, d ; Get the passed pointer. + bne @getrealblk ; The pointer isn't NULL, so get the real block. + bra @end ; The pointer is NULL, so we're done. @getrealblk: - lda.q sp+25 ; Get the passed pointer. - sec ; Prepare for a non borrowing subtract. - sbc #8 ; Move the passed pointer back by one. - sta.q sp+25 ; Set the first local variable to the start of the used block. - lda.q (sp+25) ; Get the real block address. - sta.q sp+25 ; Set the passed pointer to the start of the real block. - ldy #ublk.size ; Get the size of the real block. - lda.q (sp+25), y; - sta.q sp+17 ; Save the size of the real block. - clc ; Prepare for a non carrying add. - adc.q sp+25 ; Add the size of the real block with the start of the real block. - cmp.q heapptr ; Is this block on top of the heap? - bne @heapadd ; No, so add it to the free block list. + sub #8 ; Get the start of the used block. + mov.q a, (a) ; Get the start of the real block. + mov.q b, (a+ublk.size) ; Get the size of the real block. + lea e, (a+b) ; Add the size of the real block with the start of the real block. + cpe.q heapptr ; Is this block on top of the heap? + bne @heapadd ; No, so add it to the free block list. @dectop: - lda.q sp+25 ; Get the block. - sta.q heapptr ; Set the top of the heap to it. + sta.q heapptr ; Set the top of the heap to the start of the current real block. @chklastblk: - lda.q heapl ; Get the last free list entry. - sta.q sp+17 ; Copy it into the second local variable. - ora.d sp+21 ; Is the free list empty? - beq @end ; Yes, so we're done. - lda.q sp+17 ; No, so Get the last free list entry. - ldy #fblk.size ; Get the size of the block. - lda.q (sp+17), y; - clc ; Prepare for a non carrying add. - adc.q sp+17 ; Add the size of the block, with the address of the block entry. - cmp.q heapptr ; Is the last block on top of the heap? - bne @end ; No, so we're done. + ldb.q heapl ; Get the last free list entry. + beq @end ; The free list is empty, so we're done. + ldy #fblk.size ; Get the size of the block. + mov.q a, (b+fblk.size) ; Get the size of the block. + lea e, (a+b) ; Add the size of the block, with the address of the block entry. + cpe.q heapptr ; Is the last block on top of the heap? + bne @end ; No, so we're done. @delblk: - lda.q sp+17 ; Yes, so remove the last block. - sta.q heapptr ; + stb.q heapptr ; Yes, so remove the last block. @correctblk: - ldy #fblk.prev ; Get the previous block. - lda.q (sp+17), y; - sta.q sp+25 ; Save the previous block for now. - sta.q heapl ; Set the last block to the previous block. - ora.d sp+29 ; Is the previous block non NULL? - bne @delnxtblk ; Yes, so delete the next block. - sta.q heapf ; No, so empty the free list. - bra @end ; We are done. + mov.q a, (b+fblk.prev) ; Get the previous block. + sta.q heapl ; Set the last block to the previous block. + bne @delnxtblk ; The previous block isn't NULL, so delete the next block. + sta.q heapf ; The previous block is NULL, so empty the free list. + bra @end ; We are done. @delnxtblk: - and #0 ; Reset A. - ldy #fblk.next ; Delete the next block. - sta.q (sp+25), y; + lea e, (a+fblk.next) ; Delete the next block. + stz.q (e) ; @end: - ads #$20 ; Clean up the stack frame. - ply.q ; Restore Y. - plb.q ; Restore B. - pla.q ; Restore A. - rts ; End of free. + ple.q ; Restore E. + ply.q ; Restore Y. + plx.q ; Restore X. + plb.q ; Restore B. + pla.q ; Restore A. + rts ; End of free. @heapadd: - lda.q heapf ; Get the first block. - sta.q sp+9 ; Copy it into the third local variable. - ora.d sp+13 ; Is the free list empty? - bne @srchflst ; No, so start searching the free list. + ldy.q heapf ; Get the first block. + bne @srchflst ; The Free list isn't empty, so start searching the free list. @empty: - ldy #fblk.next ; Clear the next block. - sta.q (sp+25), y; - ldy #fblk.prev ; Clear the previous block. - sta.q (sp+25), y; - lda.q sp+25 ; Reset A. - sta.q heapf ; Clear the first block entry. - sta.q heapf ; Clear the last block entry. - bra @end ; We are done. + mov.q (a+fblk.next), y ; Clear the next block. + mov.q (a+fblk.prev), y ; Clear the previous block. + sta.q heapf ; Set the first block entry to the current block. + sta.q heapl ; Set the last block entry to the current block. + bra @end ; We are done. @srchflst: - and #0 ; Reset A. - sta.q sp+1 ; Reset the left pointer. - ldy #fblk.next ; Setup for the loop. @loop: - lda.q sp+9 ; Get the right pointer. - cmp.q sp+25 ; Is the right pointer at, or below the current block? - beq @nextright ; Yes, so get the next right pointer. - bcs @chkrmerge ; No, so do the right block merge. + cmp y, a ; Is the right pointer at, or below the current block? + beq @nextright ; Yes, so get the next right pointer. + bcs @chkrmerge ; No, so do the right block merge. @nextright: - sta.q sp+1 ; Set the left pointer, to the right pointer. - lda.q (sp+9), y ; Get the next right pointer. - sta.q sp+9 ; Set the current right pointer to the next right pointer. - ora.d sp+13 ; Is the next right pointer NULL? - bne @loop ; No, so keep looping. + tyx ; Set the left pointer, to the right pointer. + mov.q y, (y+fblk.next) ; Set the current right pointer to the next right pointer. + bne @loop ; The next right pointer isn't NULL, so keep looping. @st_lmerge2: - sta.q (sp+25), y; Clear the next block. - lda.q sp+25 ; Get the current block. - sta.q heapl ; Set the last free block entry to it. - bra @chklmerge2 ; Do the left block merge. + mov.q (a+fblk.next), y ; Clear the next block. + sta.q heapl ; Set the last free block entry to it. + bra @chklmerge2 ; Do the left block merge. @chkrmerge: - lda.q sp+25 ; Get the current block. - clc ; Prepare for a non carrying add. - adc.q sp+17 ; Add the size of the current block, to the current block. - cmp.q sp+9 ; Is the right pointer NULL? - bne @normerge ; No, so don't merge the right block. + lea e, (a+b) ; Add the size of the current block, to the current block. + cmp e, y ; Is the current block the same as the right block? + bne @normerge ; No, so don't merge the right block. @rmerge: - ldy #fblk.size ; Get the size of the right pointer. - lda.q sp+17 ; Get the size of the current block. - clc ; Prepare for a non carrying add. - adc.q (sp+9), y ; Add the size of the current block, with the size of the right pointer. - sta.q (sp+25), y; Set the size of the current block, to the new size. + mov e, b ; Get the size of the current block. + add.q e, (y+fblk.size) ; Add the size of the current block, with the size of the right pointer. + mov.q (a+fblk.size), e ; Set the size of the current block, to the new size. @rmerge2: - ldy #fblk.next ; Get the next right pointer. - lda.q (sp+9), y ; - sta.q (sp+25), y; Set the next block, to the next right pointer. - sta.q sp+17 ; Save the next block in the second local variable. - ora.d sp+21 ; Is the next block NULL? - beq @setheapl ; Yes, so set the last block. + lea fblk.next ; Get the next right pointer. + mov.q (a+e), (y+e) ; Set the next block, to the next right pointer. + mov.q b, (y+e) ; Save the next block. + beq @setheapl ; The next block is NULL, so set the last block. @setprev: - lda.q sp+25 ; Get the current block. - ldy #fblk.prev ; Set the previous block to the current block. - sta.q (sp+17), y; - bra @chklmerge ; Do the left block merge. + mov.q (b+fblk.prev), a ; Set the previous block to the current block. + bra @chklmerge ; Do the left block merge. @setheapl: - lda.q sp+25 ; Get the current block. - sta.q heapl ; Set the last block to the current block. - bra @chklmerge ; Do the left block merge. + sta.q heapl ; Set the last block to the current block. + bra @chklmerge ; Do the left block merge. @normerge: - lda.q sp+9 ; Get the right pointer. - ldy #fblk.next ; Set the next block to the right pointer. - sta.q (sp+25), y; - lda.q sp+25 ; Get the current block. - ldy #fblk.prev ; Set the previous right pointer to the current block. - lda.q (sp+9), y ; + mov.q (a+fblk.next), y ; Set the next block to the right pointer. + mov.q (y+fblk.prev), a ; Set the previous right pointer to the current block. @chklmerge: - lda.q sp+1 ; Get the left pointer. - ora.d sp+5 ; Is the left pointer NULL? - bne @chklmerge2 ; No, so keep checking. + and x, x ; Is the left pointer NULL? + bne @chklmerge2 ; No, so keep checking. @newstart: - ldy #fblk.prev ; Clear the previous block. - sta.q (sp+25), y; - lda.q sp+25 ; Get the current block. - sta.q heapf ; Set the first block, to the current block. - bra @end2 ; We are done. + mov.q (a+fblk.prev), x ; + sta.q heapf ; Set the first block, to the current block. + bra @end2 ; We are done. @chklmerge2: - ldy #fblk.size ; Get the size of the left block. - lda.q (sp+1), y ; - clc ; Prepare for a non carrying add. - adc.q sp+1 ; Add the size of the left block, to the left pointer. - cmp.q sp+25 ; Is the left block adjacent? - bne @nolmerge ; No, so don't merge the left block. + mov.q e, (x+fblk.size) ; Get the size of the left block. + add e, x ; Add the size of the left block, to the left pointer. + cmp e, a ; Is the left block adjacent? + bne @nolmerge ; No, so don't merge the left block. @lmerge: - lda.q (sp+1), y ; Get the size of the left block. - clc ; Prepare for a non carrying add. - ldb.q (sp+25), y; Get the size of the current block. - adc b ; Add the size of the left block, with the size of the current block. - sta.q (sp+1), y ; Set the size of the left block to the new size. + lea fblk.size ; Set the offset to the block size. + add.q (x+e), (a+e) ; Add the size of the left block, with the size of the current block. @lmerge2: - ldy #fblk.next ; Get the next block. - lda.q (sp+25), y; - sta.q (sp+1), y ; Set the next left pointer, to the next block. - sta.q sp+17 ; Set the second local variable to the next block. - ora.d sp+21 ; Is the next left pointer NULL? - beq @newlast ; Yes, so set the last block. + lea fblk.next ; Set the offset to the next block. + mov.q (x+e), (a+e) ; Set the next left pointer, to the next block. + mov.q b, (a+e) ; Get the next block. + beq @newlast ; The next block is NULL, so set the last block. @lprev: - lda.q sp+1 ; Get the left pointer. - ldy #fblk.prev ; Set the next left pointer's previous pointer to the left pointer. - sta.q (sp+17), y; - bra @end2 ; We are done. + mov.q (b+fblk.prev), x ; Set the next left pointer's previous pointer to the left pointer. + bra @end2 ; We are done. @newlast: - lda.q sp+1 ; Get the left pointer. - sta.q heapl ; Set the last block, to the left pointer. - bra @end2 ; We are done. + stx.q heapl ; Set the last block, to the left pointer. + bra @end2 ; We are done. @nolmerge: - lda.q sp+25 ; Get the current block. - ldy #fblk.next ; Set the next left pointer, to the current block. - sta.q (sp+1), y ; + mov.q (x+fblk.next), a ; Set the next left pointer, to the current block. @nolmerge2: - lda.q sp+1 ; Get the left pointer. - ldy #fblk.prev ; Set the previous block, to the left pointer. - sta.q (sp+25), y; + mov.q (a+fblk.prev), x ; Set the previous block, to the left pointer. @end2: - ads #$20 ; Clean up the stack frame. - ply.q ; Restore Y. - plb.q ; Restore B. - pla.q ; Restore A. - rts ; End of free. + ple.q ; Restore E. + ply.q ; Restore Y. + plb.q ; Restore B. + pla.q ; Restore A. + rts ; End of free. ; memcpy: memory to memory copy. |