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Invalid error codes will set errno

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git-svn-id: svn://svn.cc65.org/cc65/trunk@2784 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz 2003-12-19 18:45:26 +00:00
parent 4b5cd3b981
commit 96b5da41f1
1 changed files with 10 additions and 3 deletions
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13
libsrc/common/strerror.s
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@ -15,12 +15,19 @@ _strerror:
bne @L1 ; Jump if invalid error
cmp #EMAX ; Valid error code (map EUNKNOWN to 0)?
bcc @L2 ; Jump if ok
@L1: lda #$00 ; "Unknown error"
@L2: asl a ; * 2
tay
; The given error code is invalid
@L1: lda #<EINVAL
sta __errno
lda #>EINVAL ; = 0
sta __errno+1
; lda #$00 ; A contains zero: "Unknown error"
; Load the pointer to the error message and return
@L2: asl a ; * 2
tay
ldx __sys_errlist+1,y
lda __sys_errlist,y
rts