diff options
Diffstat (limited to 'programs/sub-suite/utils.s')
| -rw-r--r-- | programs/sub-suite/utils.s | 257 |
1 files changed, 40 insertions, 217 deletions
diff --git a/programs/sub-suite/utils.s b/programs/sub-suite/utils.s index a66f036..046164a 100644 --- a/programs/sub-suite/utils.s +++ b/programs/sub-suite/utils.s @@ -1,22 +1,5 @@ ; Utility subroutines for SuBAsm. -.org util_data -; Hex character table. -hex_char: - .byte "0123456789ABCDEF" - -; Compare, and return table for pre-tokens. -ptok_tab: - .byte ".@:=+-><(),xy\"\'#;$%" -; Compare, and return table for isdelm. -dtab: - .byte "\n,\"\' " -; Compare, and return table for isdelm2. -dtab2: - .byte "),.+<>-=;\n" - -.org utils - print_hi: and #0 ; Reset A. sta idx3 ; Clear the string index. @@ -139,48 +122,6 @@ print_hex: rts ; End of print_hex. -strtoull: - phy.w ; Preserve Y. - sta f ; Save the base. - and #0 ; Reset A. - tay ; Reset Y. - sta.q valbuf ; Reset the value buffer. -@loop: - lda (ptr3), y ; Get a character from the string. - pha ; Preserve the character. - jsr isdigit ; Is this character, a digit? - pla ; Get the character back. - bne @digit ; Yes, so extract the value from it. - jsr tolower ; No, so convert the character to lowercase. - pha ; Preserve the character. - jsr islower ; Is this an alphabetical character? - 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. - 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. -@chkbase: - cmp f ; Does the value match the base? - bcs @end ; No, so we're done. -@addval: - tab ; Save the digit value. - lda.q valbuf ; Get the value from the value buffer. - mul f ; Multiply the value by the base. - clc ; Prepare for a non carrying add. - aab ; Add the digit value to the total value. - sta.q valbuf ; Place the value in the value buffer. - iny ; Increment the string index. - bra @loop ; Keep looping. -@end: - ply.w ; Get Y back. - ldb #0 ; Reset B. - rts ; End of strtoull. - - charcpy: ldx idx3 ; Get the string index. sta strbuf, x ; Save it in the string buffer. @@ -188,164 +129,46 @@ charcpy: rts ; End of charcpy. -strlen: - ldb #1 ; Set the second pointer - jsr set_ptr ; to the passed pointer. - deb ; Reset B. - tba ; Reset A. - tax ; Reset X. - phy.w ; Preserve Y. - txy ; Reset Y. -@loop: - lda (ptr2), 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. -@end: - tyx ; Return the length in X. - ply.w ; Get the preserved value back. - rts ; End of strlen. - - -strcmp: - ldb #1 ; Set the second pointer - jsr set_ptr ; to the passed pointer. - deb ; Reset B. - tba ; Reset A. - phy.w ; Preserve Y. - tay ; Reset Y. -@loop: - ldb #0 ; Set the islong flag to false. - lda (ptr), 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 (ptr2), 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. - -strcasecmp: - ldb #1 ; Set the second pointer - jsr set_ptr ; to the passed pointer. - deb ; Reset B. - tba ; Reset A. - phy.w ; Preserve Y. - tay ; Reset Y. -@loop: - ldb #0 ; Set the islong flag to false. - lda (ptr), 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. - jsr tolower ; Convert the character of string 1 to lowercase. - phb ; Preserve the islong flag. - pha ; Preserve the converted character. - lda (ptr2), 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. - cab ; 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 (ptr2), y ; Are we at the end of the second string? - beq @islong ; Yes, so check the islong flag. -@isshort: - lda (ptr), 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. - bra @end ; We are done. -@equ: - lda #0 ; Return 0. - bra @end ; We are done. -@short: - lda #$FF ; Return -1. -@end: - ply.w ; Get the preserved value back. - rts ; End of strcmp. - - -isdigit: - sec ; Prepare for a non carrying subtraction. - sbc #'0' ; Subtract $30 from the passed character. - and #$FF ; Make sure that we have only one byte. - cmp #10 ; Is the subtracted value, less than 10? - bcs @false ; No, so return false. -@true: - lda #1 ; Yes, so return true. - bra @end ; We are done. -@false: - lda #0 ; Return false. -@end: - rts ; End of isdigit. - -isxdigit: - pha ; Preserve the character. - jsr isdigit ; Is this character, a decimal digit? - pla ; Get the character back. - bne @true ; Yes, so return true. -@alpha: - sec ; No, so prepare for a non carrying subtract. - ora #$20 ; Convert it to lowercase. - sbc #'a' ; Subtract $61 from the character. - and #$FF ; Make sure that we have only one byte. - cmp #6 ; Is the subtracted value, less than 6? - bcs @false ; No, so return false. -@true: - lda #1 ; Yes, so return true. - bra @end ; We are done. -@false: - lda #0 ; Return false. -@end: - rts ; End of isxdigit. - - -isupper: - sec ; Prepare for a non carrying subtraction. - sbc #'A' ; Subtract $41 from the passed character. - bra isletter ; Check if it's less than 26. -islower: - sec ; Prepare for a non carrying subtraction. - sbc #'a' ; Subtract $61 from the passed character. -isletter: - and #$FF ; Make sure that we have only one byte. - cmp #26 ; Is the subtracted value, less than 26? - bcs @false ; No, so return false. -@true: - lda #1 ; Yes, so return true. - bra @end ; We are done. -@false: - lda #0 ; Return false. -@end: - rts ; End of isletter. - - -tolower: - pha ; Preserve the character. - jsr isupper ; Is this character, an uppercase character? - pla ; Get the character back. - beq @end ; No, so we're done. -@lower: - ora #$20 ; Yes, so convert it to lowercase. -@end: - rts ; End of tolower. - - -toupper: - pha ; Preserve the character. - jsr islower ; Is this character, a lowercase character? - pla ; Get the character back. - beq @end ; No, so we're done. -@upper: - and #$5F ; Yes, so convert it to uppercase. -@end: - rts ; End of toupper. +strcmpg: + ldb.w #strcmp ; Get the address of strcmp. + phb.q ; Use it for an indirect call. + ldb.q ptr ; Get the first pointer. + bra gargs ; Jump to the argument handler. +strcaseg: + ldb.w #strccmp ; Get the address of strcasecmp. + phb.q ; Use it for an indirect call. + ldb.q ptr ; Get the first pointer. + bra gargs ; Jump to the argument handler. +gargs: + phb.q ; Use the pointer in B as the first arg. + pha.q ; Use the value in A as the second arg. + and #0 ; reset a. + tab ; reset b. + jsr (sp+17) ; call the pushed routine. + tab ; Preserve the return value. + pla.q ; Get the second arg back. + pla.q ; Get the first arg back. + pla.q ; Get the pushed routine back. + tba ; Get the return value back. + rts ; End of gargs. + + +strtoullg: + ldb.q ptr3 ; Get the third pointer. + phb.q ; Push the first arg. + pha ; Push the second arg. + and #0 ; Reset A. + tab ; Reset B. + jsr strtoull ; Call strtoull. + tab ; Preserve the return value. + pla ; Get the second arg back. + pla.q ; Get the first arg back. + tba ; Get the return value back. + pha.q ; Preserve the return value. + and #0 ; Reset A. + tab ; Reset B. + pla.q ; Get the return value back. + rts ; End of strtoullg. isdelm2: |