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History log of /src/lib/libc/arch/m68k/sys/__vfork14.S
RevisionDateAuthorComments
 1.12  12-Sep-2013  joerg Pass PICFLAGS down to cc-as-as and use __PIC__ to decide if it is small
vs big PIC mode. Retire -DPIC and -DBIGPIC.
 1.11  16-Jul-2013  matt Use SYSTRAP.
Don't use the PLT to call CERROR
Use LEA_LCL / GOT_SETUP
Remove non-__ELF__ code.
Make __minbrk and __curbrk hidden and avoid using the GOT for them.
Convert to motorola syntax.
 1.10  16-Jul-2013  matt Convert to normal Motorola syntax for addressing.
%r@ -> (%r)
%r@- -> -(%r)
%r@+ -> (%r)+
%r@(n) n(%r)
etc.
No object differences.
 1.9  07-Aug-2003  agc branches: 1.9.56; 1.9.62;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22280, verified by myself.
 1.8  07-Dec-2000  scw The last change broke things if SYS___vfork14 returned an error; fix it.
 1.7  02-Dec-2000  scw Save the return address in %a1 across the vfork syscall instead of %a0.
 1.6  25-Oct-1999  thorpej Add register prefixes.
 1.5  18-Oct-1999  itohy ELF PIC support.
 1.4  02-May-1999  kleink branches: 1.4.2;
We can shave off a register-register move when using the SVR4 ABI: __errno()
will return its pointer result in a0.
 1.3  06-Oct-1998  kleink Add *__errno() redirection for _REENTRANT code. Also, some movel vs. movl
consistency.
 1.2  01-Jul-1998  thorpej Use _C_LABEL() to generate C labels.
 1.1  04-Jan-1998  thorpej Add syscall stubs for __vfork14(). These are basically copies of Ovfork.S
with the syscall numbers changed.

Since 4.4BSD vfork(2) did not share address space, Ovfork.S could be changed
to be identical to fork.S (modulo syscall numbers). __vfork14.S, however,
needs to remain separate since with a shared address space, the stub needs to
pre-decrement the stack and do an indirect jump to the return address, so that
the shared stackframe is still there when the parent returns. (Obviously,
this does not apply to systems which to not build stackframes on leaf calls.)
 1.4.2.1  27-Dec-1999  wrstuden Pull up to last week's -current.
 1.9.62.1  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.9.56.1  22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")

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