mirror of https://github.com/A2osX/A2osX.git
602 lines
10 KiB
Plaintext
602 lines
10 KiB
Plaintext
NEW
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AUTO 3,1
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*/--------------------------------------
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* # StrToF
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* Convert String to 40 bits Float
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* ## C
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* `float strtof (const char* str, char** endptr );`
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* ## ASM
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* `>PUSHW str`
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* `>PUSHWI EndPtr`
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* `>SYSCALL StrToF`
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* ## RETURN VALUE
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* On stack (float)
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*\--------------------------------------
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K.StrToF >PULLW ZPPtr1
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>PULLYA
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jsr K.AToF
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lda TXTPTR
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sta (ZPPtr1)
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ldy #1
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lda TXTPTR+1
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sta (ZPPtr1),y
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rts
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*/--------------------------------------
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* # AToF
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* Convert String to 40 bits Float
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* ## C
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* `float atof ( const char* str );`
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* ## ASM
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* `>LDYA str`
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* `>SYSCALL atof`
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* ## RETURN VALUE
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* On stack (float)
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*\--------------------------------------
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K.AToF >STYA TXTPTR Ptr to source string
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lda pStack
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sec
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sbc #5
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sta pStack
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jsr CHARGOT
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ldx #FPU.FIN
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jmp GP.GetFac
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*/--------------------------------------
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* # StrToL/StrToUL
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* Convert String to 32 bits (unsigned) int
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* ## C
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* `long strtol (const char* str, char** endptr, int base);`
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* `unsigned long strtoul (const char* str, char** endptr, int base);`
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* ## ASM
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* `>PUSHW str`
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* `>PUSHW EndPtr`
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* `>PUSHB Base`
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* `>SYSCALL StrToL`
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* ## RETURN VALUE
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* On stack (long)
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*\--------------------------------------
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K.StrToL sec Signed
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.HS 90 BCC
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K.StrToUL clc Unsigned
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>PULLA Base
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>PULLW ZPPtr1 EndPtr
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>PULLW ZPPtr2 str
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jsr K.AToL.I
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bcs K.StrToUL.rts
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* clc
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adc ZPPtr2
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sta (ZPPtr1)
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lda #0
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adc ZPPtr2+1
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ldy #1
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sta (ZPPtr1),y
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K.StrToUL.rts rts
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*/--------------------------------------
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* # atol
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* Convert String to 32 bits long
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* ## C
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* `long atol ( const char * str );`
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* ## ASM
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* `>LDYA str`
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* `>SYSCALL atol`
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* ## RETURN VALUE
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* On stack (long)
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*\--------------------------------------
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K.AToL >STYA ZPPtr2 C-String in Ptr2, Dst buffer in Ptr1
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* lda #10 base 10
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sec signed
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K.AToL.I jsr MATH.Dec2ACC32
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bcs .9
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ldx #3
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.3 lda ACC32,x
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>PUSHA
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dex
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bpl .3
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tya Y = A = Count processed
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* clc
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.9
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rts
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*/--------------------------------------
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* # atoi
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* Convert String to 16 bits int
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* ## C
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* `int atoi ( const char * str );`
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* ## ASM
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* `>LDYAI str`
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* `>SYSCALL atoi`
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* ## RETURN VALUE
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* Y,A = int
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*\--------------------------------------
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K.atoi >STYA ZPPtr2
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* lda #10 base 10
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sec signed
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jsr MATH.Dec2ACC32
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bcs .9
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>LDYA ACC32
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.9 rts
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*/--------------------------------------
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* # RealPath
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* Return the canonicalized absolute pathname
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* ## C / CSH
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* `char *realpath(const char *path, char *resolvedpath);`
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* ## ASM
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* `>PUSHW path`
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* `>PUSHW resolvedpath`
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* `>SYSCALL realpath`
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* ## RETURN VALUE
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* CC : success
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* Y,A = Ptr to Full Path (C-String Buffer, MLI.MAXPATH+1)
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* X = hMem of Full Path
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* CS : A = Error Code
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*\--------------------------------------
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K.realpath.DST .BS 2
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K.realpath.RET4 >RET 4
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K.realpath ldy #3
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lda (pStack),y
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>PUSHA
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lda (pStack),y
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>PUSHA
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>PUSHWZ
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jsr K.expand
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bcs K.realpath.RET4
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>STYA ZPPtr1
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stx .99+1 save expanded buffer hMem
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>PULLW K.realpath.DST resolved path
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inc pStack discard path
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inc pStack
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ldx #$ff
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lda (ZPPtr1)
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cmp #'/' full path starting with '/'?
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beq .3 yes, do not append to current prefix
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.1 ldy #S.PS.hCWD
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lda (pPS),y
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jsr K.GetMemPtr
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>STYA .20+1
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ldy #$ff
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.2 iny
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inx
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.20 lda $ffff,y
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sta K.Buf256,x
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bne .2
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dex
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.3 ldy #$ff
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.4 iny
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inx
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lda (ZPPtr1),y
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sta K.Buf256,x
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bne .4
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dex
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beq .81 we have '/'....nothing to do...
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*--------------------------------------
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* X=LEN, K.Buf256 = /dir1/./../file(/)\0
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*--------------------------------------
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ldx #0 will skip leading /
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.5 ldy #0 reset dot counter=0
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.6 inx
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lda K.Buf256,x
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beq .8
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.7 cmp #'/'
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beq .8
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cmp #'.'
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bne .5
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iny
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bra .6
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.8 tya
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beq .80 Y was 0....nothing to do...
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dey one dot ?
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bne .9 no..
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dex
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dex
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jsr K.RealPath.RemoveAtX we found "/.", remove,useless....
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bra .80
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.9 dey "/.." ?
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bne .99 "/..." ??!!...syntax error
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dex
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dex
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dex
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txa we found "/.."
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beq .99 at the beginning of string...cannot remove /dir/..
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jsr K.RealPath.RemoveAtX remove "/.."
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.10 dex
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lda K.Buf256,x go to "/dir"
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cmp #'/'
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bne .10
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jsr K.RealPath.RemoveAtX ...remove "/dir"
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.80 lda K.Buf256,x was / or \0 ?
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bne .5
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*--------------------------------------
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.81 jsr .99
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.82 ldy K.realpath.DST
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lda K.realpath.DST+1
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bne .85
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>LDYAI MLI.MAXPATH+1
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jsr K.getmem
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bcs .90
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.85 >STYA ZPPtr1
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ldy #$ff
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.83 iny
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lda K.Buf256,y
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sta (ZPPtr1),y
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bne .83
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>LDYA ZPPtr1
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clc
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rts
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.99 lda #$ff SELF MODIFIED
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jsr K.FreeMem
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lda #E.BADPATH
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sec
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.90 rts
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*--------------------------------------
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K.RealPath.RemoveAtX
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txa X = "/something"
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tay
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.1 iny
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lda K.Buf256,y
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beq .2 found /something\0
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cmp #'/'
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bne .1 found /something/
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.2 phx save X for exit
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.3 iny K.Buf256,y=/ or 0
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inx
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lda K.Buf256-1,y
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sta K.Buf256-1,x
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bne .3
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txa
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bne .8
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lda #'/' Make sure we have a least '/' in the buffer
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sta K.Buf256
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stz K.Buf256+1
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.8 plx restore X
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rts
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*/--------------------------------------
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* # Expand
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* ## C
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* `char *expand(const char *str, char *expanded);`
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* ## ASM
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* `>PUSHW str`
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* `>PUSHW expanded`
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* `>SYSCALL expand`
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* ## RETURN VALUE
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* if expanded == null
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* Y,A = PTR to Expanded String
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* X = hMem to Expanded String
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* if expanded != null
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* Y,A = strlen
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*\--------------------------------------
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K.Expand ldy #2
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lda (pStack),y
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pha
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iny
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lda (pStack),y
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ply
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jsr K.strdup
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bcc .1
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jmp .9
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.1 phx Save temp string...
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>STYA TXTPTR
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stz ENV.BufPtr init Expanded String len=0
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stz ENV.bExp No var found yet
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stz ENV.bNoExp Reset no expand flag
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.10 lda (TXTPTR) End of CSTR?
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beq .80
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jsr SHARED.TXTPTRn
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.11 cmp #'''
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bne .21
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lda ENV.bNoExp
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eor #$ff
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sta ENV.bNoExp toggle flag
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bra .10
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.21 bit ENV.bNoExp
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bpl .23
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.22 jsr ENV.AddAToBuf
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bra .10
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.23 cmp #'$' no, found one ?
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bne .22 no, store...
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lda (TXTPTR)
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bne .24
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lda #'$' End of string, output $
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bra .22
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.24
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* sec
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ror ENV.bExp Toggle Expanded flag
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stz ENV.VarEndChar
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cmp #'{' "${VAR]"?
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bne .31
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dec ENV.VarEndChar "}" expected
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jsr SHARED.TXTPTRn skip "{"
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bra .40
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.31 jsr ENV.SysVar 0-9 *#?@$!
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bcs .40
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.35 jsr SHARED.TXTPTRn skip $x
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bra .10
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.40 jsr ENV.ExpandStrVar
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bcc .70
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.50 ldy ENV.BufPtr
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lda /K.Buf256
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>STYA FORPNT
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ldx #_GetEnv
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jsr K.GetEnv.I
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bcs .70
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ldx ENV.BufPtr
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.51 lda K.Buf256,x
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beq .52
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inx
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bra .51
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.52 stx ENV.BufPtr
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.70 lda (TXTPTR)
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beq .72
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jsr SHARED.IsIDValid
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bcs .72
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jsr SHARED.TXTPTRn
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bra .70
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.72 lda ENV.VarEndChar
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bne .35 skip "}" and loop
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bra .10
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.80 ldx ENV.BufPtr
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stz K.Buf256,x
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pla discard temp string
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jsr K.FreeMem
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bit ENV.bExp Did we expand something ?
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bpl .81
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jsr STRING.DupBuf256
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bcs .9
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jmp .1
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.81 ldy #1
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lda (pStack),y
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beq .83
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sta ZPPtr1+1
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lda (pStack)
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sta ZPPtr1
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ldy #$ff
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.82 iny
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lda K.Buf256,y
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sta (ZPPtr1),y
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bne .82
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* Y = len, A = 0
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bra .9
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.83 jsr STRING.DupBuf256
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.9 >RET 4
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*--------------------------------------
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ENV.SysVar jsr ZP.IsDigit $0 ... $9 ?
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bcs .1
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and #$0f
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jsr K.ArgV
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bcs .8 Arg# is undefined, do not append anything
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jsr ENV.AddYAToBuf
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.8 clc
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rts
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.1 ldx #ENV.SysVars.Cnt-1
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.2 cmp ENV.SysVars,x
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beq .3
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dex
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bpl .2
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sec
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rts
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.3 txa
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beq ENV.SysVarsAllArgs
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ldy ENV.SysVars.PS-1,x
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lda (pPS),y
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*--------------------------------------
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ENV.SysVarsNum jsr MATH.A2STR10NP
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ldy #0
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.1 lda FOUTBuf,y
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beq ENV.SysVarsNum.8
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iny
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jsr ENV.AddAToBuf
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bra .1
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ENV.SysVarsNum.8
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clc
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rts
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*--------------------------------------
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ENV.SysVarsAllArgs
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lda #1
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jsr K.ArgV
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bcs ENV.SysVarsNum.8
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>STYA ZPPtr3
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.1 lda (ZPPtr3)
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beq ENV.SysVarsNum.8
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.2 jsr ENV.AddP3ToBuf
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jsr ENV.NextEnvP3
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lda (ZPPtr3)
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beq ENV.SysVarsNum.8
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lda #C.SPACE
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jsr ENV.AddAToBuf
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bra .2
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*--------------------------------------
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ENV.SysVars .AS "*#?@$!"
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ENV.SysVars.Cnt .EQ *-ENV.SysVars
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ENV.SysVars.PS .DA #S.PS.ARGC,#S.PS.RC,#S.PS.PPID,#S.PS.PID,#S.PS.CPID
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*--------------------------------------
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ENV.ExpandStrVar
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>LDYAI ENV.StrVars
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>STYA ZPPtr3
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ldx #0
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.1 lda (ZPPtr3)
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beq .9
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ldy #$ff
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.2 iny
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lda (TXTPTR),y
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beq .3
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jsr SHARED.IsIDValid
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bcs .3
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cmp (ZPPtr3),y
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beq .2
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bra .4
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.3 lda (ZPPtr3),y
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bne .4
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jmp (ENV.StrVarsJmp,x)
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.4 inx
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inx
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jsr ENV.NextEnvP3
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bra .1
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.9 sec
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rts
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*--------------------------------------
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ENV.StrVars .AZ "PWD"
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.DA #0
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*--------------------------------------
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ENV.StrVarsJmp .DA ENV.StrVarsPWD
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*--------------------------------------
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ENV.StrVarsPWD ldy #S.PS.hCWD
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lda (pPS),y
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jsr K.GetMemPtr
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*--------------------------------------
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ENV.AddYAToBuf >STYA ZPPtr3
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*--------------------------------------
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ENV.AddP3ToBuf ldx ENV.BufPtr
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ldy #$ff
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dex
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.1 iny
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inx
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lda (ZPPtr3),y
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sta K.Buf256,x
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bne .1
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stx ENV.BufPtr
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rts
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*--------------------------------------
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ENV.AddAToBuf ldx ENV.BufPtr
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sta K.Buf256,x
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inc ENV.BufPtr
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rts
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*--------------------------------------
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ENV.NextEnvP3 jsr ENV.GetP3LenY
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tya
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sec
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adc ZPPtr3
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sta ZPPtr3
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bcc .8
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inc ZPPtr3+1
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.8 rts
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*--------------------------------------
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ENV.GetP3LenY ldy #$ff
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.1 iny
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lda (ZPPtr3),y
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bne .1
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rts
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*--------------------------------------
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MAN
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SAVE usr/src/sys/kernel.s.stdlib
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LOAD usr/src/sys/kernel.s
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ASM
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