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optimize, fix relocations

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This commit is contained in:
Joshua Bell 2019-01-09 16:36:42 -08:00
parent afeed7db72
commit aeaba90b16
1 changed files with 23 additions and 15 deletions
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38
path.s
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@ -18,8 +18,6 @@
;;; TODO: ;;; TODO:
;;; * Support multi-segment path (e.g. /hd/bin:/hd/extras/bin) ;;; * Support multi-segment path (e.g. /hd/bin:/hd/extras/bin)
;;; * Fail install if on an Integer BASIC machine
;;; * Skip leading spaces
;;; ============================================================ ;;; ============================================================
@ -137,9 +135,8 @@ CASE_MASK = $DF
page_num9 := *+2 ; address needing updating page_num9 := *+2 ; address needing updating
jsr skip_leading_spaces jsr skip_leading_spaces
nxtchr: lda INBUF,x
page_num6 := *+2 ; address needing updating page_num6 := *+2 ; address needing updating
jsr to_upper_ascii nxtchr: jsr to_upper_ascii
page_num1 := *+2 ; address needing updating page_num1 := *+2 ; address needing updating
cmp command_string,x cmp command_string,x
@ -176,7 +173,7 @@ nxtchr: lda INBUF,x
check_if_token: check_if_token:
;; Is a PATH set? ;; Is a PATH set?
page_num18 := *+2 ; address needing updating page_num17 := *+2 ; address needing updating
lda path_buffer lda path_buffer
beq not_ours beq not_ours
@ -210,9 +207,8 @@ mloop: iny ; Advance through token table
;; Check for match ;; Check for match
next_char: next_char:
lda INBUF,x ; Next character
page_num8 := *+2 ; address needing updating page_num8 := *+2 ; address needing updating
jsr to_upper_ascii jsr to_upper_ascii ; Next character
;; NOTE: Does not skip over spaces, unlike BASIC tokenizer ;; NOTE: Does not skip over spaces, unlike BASIC tokenizer
@ -224,6 +220,7 @@ next_char:
;; Otherwise, advance to next token ;; Otherwise, advance to next token
next_token: next_token:
page_num12 := *+2 ; address needing updating
jsr skip_leading_spaces jsr skip_leading_spaces
sloop: lda (ptr),y ; Scan table looking for a high bit set sloop: lda (ptr),y ; Scan table looking for a high bit set
iny iny
@ -252,7 +249,7 @@ maybe_invoke:
;; Compose path ;; Compose path
ldx #0 ldx #0
ldy #1 ldy #1
page_num12 := *+2 ; address needing updating page_num11 := *+2 ; address needing updating
: lda path_buffer+1,x : lda path_buffer+1,x
inx inx
sta (ptr),y sta (ptr),y
@ -265,8 +262,11 @@ maybe_invoke:
sta (ptr),y sta (ptr),y
iny iny
page_num15 := *+2 ; address needing updating
jsr skip_leading_spaces jsr skip_leading_spaces
: lda INBUF,x page_num16 := *+2 ; address needing updating
: jsr to_upper_ascii
lda INBUF,x
and #$7F and #$7F
cmp #'.' cmp #'.'
beq ok beq ok
@ -277,10 +277,6 @@ maybe_invoke:
cmp #'A' cmp #'A'
bcc notok bcc notok
cmp #'Z'+1 cmp #'Z'+1
bcc ok
cmp #'a'
bcc notok
cmp #'z'+1
bcs notok bcs notok
ok: sta (ptr),y ok: sta (ptr),y
@ -430,7 +426,11 @@ set_path:
;;; ============================================================ ;;; ============================================================
;;; Helpers ;;; Helpers
;;; Returns INBUF,x with high bit stripped and up-cased
;;; (also converts {|}~DEL to [\]^_ but that's okay)
.proc to_upper_ascii .proc to_upper_ascii
lda INBUF,x
and #$7F and #$7F
cmp #'a' cmp #'a'
bcc skip bcc skip
@ -465,6 +465,9 @@ path_buffer:
handler_pages = (.sizeof(handler) + $FF) / $100 handler_pages = (.sizeof(handler) + $FF) / $100
next_command := handler::next_command next_command := handler::next_command
;;; ============================================================
;;; Installation Data
new_page: new_page:
.byte 0 .byte 0
page_delta: page_delta:
@ -480,7 +483,12 @@ relocation_table:
.addr handler::page_num6 .addr handler::page_num6
.addr handler::page_num7 .addr handler::page_num7
.addr handler::page_num8 .addr handler::page_num8
.addr handler::page_num9
.addr handler::page_num10
.addr handler::page_num11
.addr handler::page_num12 .addr handler::page_num12
.addr handler::page_num14 .addr handler::page_num14
.addr handler::page_num18 .addr handler::page_num15
table_end := * .addr handler::page_num16
.addr handler::page_num17
table_end := *