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# 19apr11abu
# (c) Software Lab. Alexander Burger
# System macros
(code 'errno_A 0)
call __errno_location # Get address of 'errno'
ld4 (A) # Load value
ret
(code 'errnoC 0)
call __errno_location # Get address of 'errno'
xchg A C
st4 (C) # Store new value
ret
(code 's_isdirS_F 0) # S_ISDIR
ld4 (S `(+ I ST_MODE)) # Get 'st_mode' from 'stat'
and A `S_IFMT
cmp A `S_IFDIR
ret
(code 'wifstoppedS_F 0) # WIFSTOPPED
ld A (S I) # Get status
cmp B `(hex "7F") # (((status) & 0xff) == 0x7f)
ret
(code 'wifsignaledS_F 0) # WIFSIGNALED
ld A (S I) # Get status
and B `(hex "7F") # (((status) & 0x7f) + 1) >> 1) > 0)
inc B
shr B 1
ret
(code 'wtermsigS_A 0) # WTERMSIG
ld A (S I) # Get status
and B `(hex "7F") # ((status) & 0x7f)
zxt
ret
# vi:et:ts=3:sw=3
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