157 Commits

Author	SHA1	Message	Date
jtc	97ad548bc0	Replaced instructions with immediate operands with compatible alternatives ... saving a few bytes while the cycle count remains the same --- could actually be faster, depending on the cache, prefetch queue, etc.	1993-10-20 18:50:15 +00:00
jtc	6802033480	sigsetjmp() for the i386.	1993-10-19 20:44:00 +00:00
jtc	39ff8227a8	Makefile.inc, basically a place to put KMSRC definition	1993-10-15 01:24:47 +00:00
jtc	479a1c33c9	Provide i386 versions of div and ldiv -- they are simpler than the C versions, ... since the idiv instruction does the right thing wrt truncating towards zero.	1993-10-08 23:57:13 +00:00
jtc	e09d2f42db	Use "testb %cl,%cl" instead of "cmpb $0,%cl". ... This saves three cycles per character, and reduces the size of the function by eight bytes (the loop is unrolled eight times). Thanks to davidg for pointing this out.	1993-10-08 01:25:51 +00:00
jtc	b3f9f8f6f4	Provide an assembly language version of labs(). ... Since ints and longs are both 32 bits on a i386, we could alias abs() and labs() together as mycroft did with memmove()/memcpy(), but I'm waiting on an interpretation ruling to see if it is legal.	1993-10-08 00:01:04 +00:00
cgd	0b9f50897e	make an arch directory in libc, and move all machine dirs into it	1993-10-07 00:17:24 +00:00