mirror of https://github.com/cc65/cc65.git
67 lines
2.3 KiB
ArmAsm
67 lines
2.3 KiB
ArmAsm
;
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; 2000-05-17, Ullrich von Bassewitz
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; 2022, ChaN
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; 2023, Rumbledethumps
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;
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; int __fastcall__ __osmaperrno (unsigned char oserror);
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;
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; RP6502 will respond with a union of CC65 and FatFs errnos.
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; This will map FatFs errors into the CC65 range for portable code.
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EFATFS_START := 32
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.include "rp6502.inc"
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.include "errno.inc"
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.code
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___osmaperrno:
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cmp #EFATFS_START
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bmi @L2
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ldx #ErrTabSize
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@L1:
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cmp ErrTab-2,x ; Search for the error code
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beq @L3 ; Jump if found
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dex
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dex
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bne @L1 ; Next entry
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; Code not found, return EUNKNOWN
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lda #<EUNKNOWN
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ldx #>EUNKNOWN
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@L2:
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rts
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; Found the code
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@L3:
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lda ErrTab-1,x
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ldx #$00 ; High byte always zero
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rts
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.rodata
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ErrTab:
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.byte FR_DISK_ERR , EIO ; A hard error occurred in the low level disk I/O layer
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; .byte FR_INT_ERR , EUNKNOWN ; Assertion failed
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.byte FR_NOT_READY , EBUSY ; The physical drive cannot work
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.byte FR_NO_FILE , ENOENT ; Could not find the file
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.byte FR_NO_PATH , ENOENT ; Could not find the path
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.byte FR_INVALID_NAME , EINVAL ; The path name format is invalid
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.byte FR_DENIED , EACCES ; Access denied due to prohibited access or directory full
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.byte FR_EXIST , EEXIST ; Access denied due to prohibited access
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.byte FR_INVALID_OBJECT , EINVAL ; The file/directory object is invalid
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.byte FR_WRITE_PROTECTED , EACCES ; The physical drive is write protected
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.byte FR_INVALID_DRIVE , ENODEV ; The logical drive number is invalid
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; .byte FR_NOT_ENABLED , EUNKNOWN ; The volume has no work area
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; .byte FR_NO_FILESYSTEM , EUNKNOWN ; There is no valid FAT volume
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; .byte FR_MKFS_ABORTED , EUNKNOWN ; The f_mkfs() aborted due to any problem
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; .byte FR_TIMEOUT , EUNKNOWN ; Could not get a grant to access the volume within defined period
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.byte FR_LOCKED , EBUSY ; The operation is rejected according to the file sharing policy
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.byte FR_NOT_ENOUGH_CORE , ENOMEM ; LFN working buffer could not be allocated
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.byte FR_TOO_MANY_OPEN_FILES , EMFILE ; Number of open files > FF_FS_LOCK
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.byte FR_INVALID_PARAMETER , EINVAL ; Given parameter is invalid
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ErrTabSize = (* - ErrTab)
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