mycroft
42d9c8af6c
Oops; need to use fnstenv/fldenv for this.
1995-04-09 21:00:57 +00:00
mycroft
a94ab51d20
Fix typo.
1995-04-09 20:44:02 +00:00
mycroft
10b402aa60
Add fpset{mask,round,sticky}().
1995-04-09 20:33:13 +00:00
mycroft
ddbc579aa7
Another optimization.
1995-04-09 19:31:33 +00:00
mycroft
14e246dc4a
Optimize.
1995-04-09 19:18:49 +00:00
jtc
907e54c9e9
ENTRY(fpgetmask) -> ENTRY(fpgetsticky)
1995-04-09 19:14:28 +00:00
jtc
80bba6a1e1
Added flt_rounds, fpget{round,mask,sticky}.
1995-04-07 14:57:16 +00:00
mycroft
ce36f636ab
Separate machine dependencies.
1995-03-20 14:45:27 +00:00
mycroft
4c34be6b52
Clean up deleted files.
1995-03-01 00:00:00 +00:00
cgd
572e3f3188
don't forget inifinity.c
1995-02-25 16:24:22 +00:00
cgd
ea1ca14ecb
need these for new gen/Makefile
1995-02-25 16:20:12 +00:00
cgd
6929ad87a5
need these now, with new net Makefile.inc
1995-02-25 14:58:43 +00:00
jtc
e7d917e6eb
Remove extra "u" constraint that caused gcc 2.6.3 not to compile this file.
...
Note that gcc 2.4.5, the compiler we are currently using, still compiles it
correctly after this change.
1995-02-17 06:01:47 +00:00
mycroft
d04155c293
Optimize better.
1995-02-05 14:58:44 +00:00
jtc
b4bd7fea24
Replaced pops with adds.
1994-12-24 01:16:44 +00:00
jtc
26eccb0a9b
Exchange offsets of "saved signal mask" and "signal mask saved" so
...
that the layout of sigjmp_bufs and jmp_bufs are the same (except
for the "signal mask saved" appended to the end).
1994-12-24 01:05:44 +00:00
mycroft
fcc40a849d
If len == 0, then the result must be 0 regardless of the other arguments.
1994-11-24 16:36:35 +00:00
mycroft
2db41a19e7
Use trap gate to enter kernel.
1994-10-26 19:49:42 +00:00
mycroft
837f99d25c
Clean up deleted files.
1994-10-06 04:38:25 +00:00
mycroft
345c8ef85c
Clean up deleted files.
1994-04-02 05:36:54 +00:00
cgd
da34d8a406
have cerror DTRT on returns, w.r.t. quads and -1. it needs to be done
...
here (think of syscall(SYS_lseek,...)). also, kill bogus lseek thang.
1994-04-02 05:36:52 +00:00
mycroft
b3086b2299
Need to set %edx to -1 before cerror, though perhaps we should have something
...
more generic for this.
1994-03-31 18:38:57 +00:00
mycroft
a3450ab6e8
Add a .text and .align to SYSCALL().
1994-03-31 18:31:23 +00:00
jtc
98cbb217ac
mem -> reg & reg->reg moves take the same time; so save a cycle by reading
...
the block length from the stack instead of caching it in a register.
1994-03-22 01:15:47 +00:00
jtc
1f29a3d910
Smaller & Faster.
1994-03-16 17:40:23 +00:00
jtc
5ac78ccb34
[hn]to[nh][sl] functions used xchgb %h1,%b1 instead of the faster (on the
...
i486 & i586) rorw $8, %w1.
1994-03-16 17:34:14 +00:00
jtc
915f7d4d3d
Use RCSID macro.
1994-03-12 01:48:26 +00:00
jtc
c95cd47ba2
Use RCSID macro for RCS ID's.
1994-03-12 01:39:55 +00:00
mycroft
90ff28fef4
Style police. Use `je' and `jne' only on the result of an equality test;
...
use `jz' and `jnz' in all other cases.
1994-02-14 20:05:52 +00:00
jtc
7f582f99d4
Fix spelling mistake: cashe -> cache.
1994-02-14 17:45:16 +00:00
jtc
01284ad877
Performance improvement from Bruce Evans.
...
Removes one test instruction for each character.
1994-02-14 17:44:39 +00:00
jtc
f28455f783
Use "ror $8,%ax" instead of "xchg %al,%ah": equal on a i386, 1 cycle faster
...
on a i486, and 2 cycles faster on a iPentium.
1994-02-14 17:43:19 +00:00
jtc
5cffad2151
Use movzbl, not movsbl, to zero extend for unsigned comparison.
...
Fix from Bruce Evans.
1994-02-07 20:57:05 +00:00
jtc
e2c220f94b
Fix spelling error in Copyright notice
1994-01-28 20:34:33 +00:00
mycroft
1fe07f186d
Separate curbrk and mincrk.
1994-01-27 15:08:03 +00:00
mycroft
3463cb4eef
Trivial speedup inspired by SPARC code.
1994-01-27 15:00:49 +00:00
mycroft
ef980f76fe
One last tweak.
1994-01-27 06:53:25 +00:00
mycroft
22e614ce10
Random cleanup.
1994-01-27 06:34:59 +00:00
mycroft
9c8862a970
Pedanticism.
1994-01-27 06:34:02 +00:00
mycroft
3cf1bd9939
SYS_brk --> SYS_break. Where's my axe?
1994-01-27 04:30:34 +00:00
mycroft
17b2a501cd
Stylistic changes.
1994-01-27 04:16:50 +00:00
mycroft
0496df7164
More stylistic changes.
1994-01-27 04:14:50 +00:00
mycroft
e84d8b28f3
Stylistic changes.
1994-01-27 04:10:20 +00:00
mycroft
b6b0ec3424
Fix bug jtc introduced.
1994-01-27 04:07:13 +00:00
jtc
7835a85a78
Optimization tweaks:
...
Use testl %reg,%reg instead of cmpl $0,%reg
Use xorl %reg,%reg instead of movl $0,%reg
1994-01-24 19:24:36 +00:00
pk
39c0326588
PIC_*() macros moved to <machine/asm.h>
1994-01-07 00:48:22 +00:00
jtc
0e09f939b2
Fix bug #24 by renaming _logname_valid to __logname_valid.
1993-12-18 01:02:47 +00:00
mycroft
cc81da7447
Shorten setup for longword operations a little.
1993-12-10 10:51:11 +00:00
mycroft
dca61f6f90
Share code.
1993-12-10 10:45:18 +00:00
jtc
a9e5cc4f83
No reason these can't share code...
1993-12-08 22:10:14 +00:00
pk
f3f7594fc9
Use PIC_PLT for error returns.
...
Correct operand order in accessing `minbrk' and `curbrk'.
1993-12-06 23:28:08 +00:00
pk
417e7a6fff
Remove spurious PIC_EPILOGUE and PIC_GOTOFF macros.
1993-12-06 23:27:04 +00:00
pk
3581f42619
Use PIC_PLT() macro for error returns
1993-12-06 23:26:04 +00:00
cgd
0ada107897
update for .S and MACHINE_ARCH
1993-12-04 02:33:35 +00:00
mycroft
448e711c78
Clean up deleted files.
1993-12-04 01:28:42 +00:00
jtc
32d96ccd3c
Remove special case for len == 0 --- It wasn't needed. By dropping the
...
conditional, the general case (where we are actually swapping bytes) is
a tiny bit faster.
1993-11-25 01:18:24 +00:00
cgd
2be44f5352
copy SYS.h and DEFS.h, too.
1993-11-05 22:44:00 +00:00
jtc
4418616857
Move the old berkeley sccs id into the header comment like it is done
...
for other source files.
1993-10-21 02:19:25 +00:00
jtc
6be8b83abc
Gcc helper functions should still use the ENTRY() macro so they will be
...
show up in profiled code. (The gcc helper functions in the other ports
do this allready).
1993-10-21 02:03:37 +00:00
jtc
34d1aad0c1
Use PIC_PLT macro with the function calls (as was done with setjmp()).
1993-10-21 01:59:44 +00:00
jtc
79591d04bc
So many files in arch/i386 have been changed I might as well run my
...
remove unecessary trailing whitespace script.
1993-10-21 01:48:14 +00:00
jtc
823c36577c
Change instances of LIBC_RCS back to LIBC_SCCS. If we are going to change
...
th LIBC_RCS, the entire source tree should be updated at once.
Remove && !defined(lint) from conditionals around rcs id's. No one is
ever going to pass a *.s file through lint.
1993-10-21 01:39:55 +00:00
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