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Call fork_exit() now instead of futzing around in assembly during a fork 

return.
This commit is contained in:
John Baldwin 2001-01-24 09:43:26 +00:00
parent 9aa16122c1
commit 89cb8fc912
3 changed files with 9 additions and 72 deletions
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27
sys/amd64/amd64/exception.S
View File

@ -289,31 +289,10 @@ IDTVEC(int0x80_syscall)
jmp _doreti
ENTRY(fork_trampoline)
MTX_EXIT(_sched_lock, MTX_SPIN)
sti /* XXX: we need this for kernel threads
created very early before interrupts
are enabled */
#ifdef SMP
cmpl $0,PCPU(SWITCHTIME)
jne 1f
PCPU_ADDR(SWITCHTIME, %eax)
pushl %eax
call _microuptime
popl %edx
movl _ticks,%eax
movl %eax,PCPU(SWITCHTICKS)
1:
#endif
/*
* cpu_set_fork_handler intercepts this function call to
* have this call a non-return function to stay in kernel mode.
* initproc has its own fork handler, but it does return.
*/
pushl %ebx /* arg1 */
call *%esi /* function */
addl $4,%esp
pushl %esi /* function */
call _fork_exit
addl $8,%esp
/* cut from syscall */
/*

27
sys/amd64/amd64/exception.s
View File

@ -289,31 +289,10 @@ IDTVEC(int0x80_syscall)
jmp _doreti
ENTRY(fork_trampoline)
MTX_EXIT(_sched_lock, MTX_SPIN)
sti /* XXX: we need this for kernel threads
created very early before interrupts
are enabled */
#ifdef SMP
cmpl $0,PCPU(SWITCHTIME)
jne 1f
PCPU_ADDR(SWITCHTIME, %eax)
pushl %eax
call _microuptime
popl %edx
movl _ticks,%eax
movl %eax,PCPU(SWITCHTICKS)
1:
#endif
/*
* cpu_set_fork_handler intercepts this function call to
* have this call a non-return function to stay in kernel mode.
* initproc has its own fork handler, but it does return.
*/
pushl %ebx /* arg1 */
call *%esi /* function */
addl $4,%esp
pushl %esi /* function */
call _fork_exit
addl $8,%esp
/* cut from syscall */
/*

27
sys/i386/i386/exception.s
View File

@ -289,31 +289,10 @@ IDTVEC(int0x80_syscall)
jmp _doreti
ENTRY(fork_trampoline)
MTX_EXIT(_sched_lock, MTX_SPIN)
sti /* XXX: we need this for kernel threads
created very early before interrupts
are enabled */
#ifdef SMP
cmpl $0,PCPU(SWITCHTIME)
jne 1f
PCPU_ADDR(SWITCHTIME, %eax)
pushl %eax
call _microuptime
popl %edx
movl _ticks,%eax
movl %eax,PCPU(SWITCHTICKS)
1:
#endif
/*
* cpu_set_fork_handler intercepts this function call to
* have this call a non-return function to stay in kernel mode.
* initproc has its own fork handler, but it does return.
*/
pushl %ebx /* arg1 */
call *%esi /* function */
addl $4,%esp
pushl %esi /* function */
call _fork_exit
addl $8,%esp
/* cut from syscall */
/*