cc65/libsrc/geos-common/system/oserror.s

;
; Ullrich von Bassewitz, 17.05.2000
; GEOS port: Maciej 'YTM/Elysium' Witkowiak
; 2.7.2001
;
; int __fastcall__ _osmaperrno (unsigned char oserror);
; /* Map a system specific error into a system independent code */
;

            .export __osmaperrno

            .include "errno.inc"
            .include "const.inc"

__osmaperrno:
        ldx #ErrTabSize
@L1:    cmp ErrTab-2,x          ; Search for the error code
        beq @L2                 ; Jump if found
        dex
        dex
        bne @L1                 ; Next entry

; Code not found, return EINVAL

        lda #<EINVAL
        ldx #>EINVAL
        rts

; Found the code

@L2:    lda ErrTab-1,x
        ldx #$00                ; High byte always zero
        rts

.rodata

ErrTab:
        .byte NO_BLOCKS,        EINVAL  ; ???
        .byte INV_TRACK,        EINVAL  ; invalid track&sector pair
        .byte INSUFF_SPACE,     ENOSPC  ; out of space
        .byte FULL_DIRECTORY,   ENOSPC  ; directory is full
        .byte FILE_NOT_FOUND,   ENOENT  ; file not found
        .byte BAD_BAM,          EIO     ; bam inconsistent
        .byte UNOPENED_VLIR,    EINVAL  ; using VLIR file without opening
        .byte INV_RECORD,       EINVAL  ; using >128 VLIR record number
        .byte OUT_OF_RECORDS,   ENOSPC  ; cannot insert/add record
        .byte STRUCT_MISMAT,    EINVAL  ; ???
        .byte BFR_OVERFLOW,     ENOMEM  ; file longer than buffer or end of file
        .byte CANCEL_ERR,       EIO     ; ???
        .byte DEV_NOT_FOUND,    ENODEV  ; device not found
        .byte INCOMPATIBLE,     EINVAL  ; ???

;       .byte 20,               ; Read error
;       .byte 21,               ; Read error
;       .byte 22,               ; Read error
;       .byte 23,               ; Read error
;       .byte 24,               ; Read error
;       .byte 25,               ; Write error
        .byte 26, EACCES        ; Write protect on
;       .byte 27,               ; Read error
;       .byte 28,               ; Write error
;       .byte 29,               ; Disk ID mismatch
;       .byte 30,               ; Syntax error
;       .byte 31,               ; Syntax error
;       .byte 32,               ; Syntax error
        .byte 33, EINVAL        ; Syntax error (invalid file name)
        .byte 34, EINVAL        ; Syntax error (no file given)
;       .byte 39,               ; Syntax error
;       .byte 50,               ; Record not present
;       .byte 51,               ; Overflow in record
;       .byte 52,               ; File too large
        .byte 60, EINVAL        ; Write file open
        .byte 61, EINVAL        ; File not open
        .byte 62, ENOENT        ; File not found
        .byte 63, EEXIST        ; File exists
        .byte 64, EINVAL        ; File type mismatch
;       .byte 65,               ; No block
;       .byte 66,               ; Illegal track or sector
;       .byte 67,               ; Illegal system track or sector
        .byte 70, EBUSY         ; No channel
;       .byte 71,               ; Directory error
;       .byte 72,               ; Disk full
;       .byte 73,               ; DOS version mismatch

ErrTabSize      = (* - ErrTab)