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bastring.h (class basic_string:Rep): Encode xlock opcode as .bytes instead of mnemonics. 

Wed Jun  2 00:21:54 1999  Robert Lipe  <robertlipe@usa.net>
        * std/bastring.h (class basic_string:Rep): Encode xlock opcode
        as .bytes instead of mnemonics.

From-SVN: r27295
This commit is contained in:
Robert Lipe 1999-06-01 23:27:14 +00:00 committed by Jeff Law
parent a310f94892
commit 73f3aa96d2
2 changed files with 14 additions and 2 deletions
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5
libstdc++/ChangeLog
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@ -1,3 +1,8 @@
Wed Jun 2 00:21:54 1999 Robert Lipe <robertlipe@usa.net>
* std/bastring.h (class basic_string:Rep): Encode xlock opcode
as .bytes instead of mnemonics.
1999-05-20 Angela Marie Thomas <angela@cygnus.com>
* configure.in: Test for ${compiler_name}.exe as well.

11
libstdc++/std/bastring.h
View File

@ -77,8 +77,15 @@ private:
void release ()
{
size_t __val;
asm ("lock; xaddl %0, %2"
: "=r" (__val) : "0" (-1), "m" (ref) : "memory");
// This opcode exists as a .byte instead of as a mnemonic for the
// benefit of SCO OpenServer 5. The system assembler (which is
// essentially required on this target) can't assemble xaddl in
//COFF mode.
asm (".byte 0xf0, 0x0f, 0xc1, 0x02" // lock; xaddl %eax, (%edx)
: "=a" (__val)
: "0" (-1), "m" (ref), "d" (&ref)
: "memory");
if (__val == 1)
delete this;
}