diff options
Diffstat (limited to 'xenolinux-2.4.21-pre4-sparse/arch/xeno/kernel/entry.S')
| -rw-r--r-- | xenolinux-2.4.21-pre4-sparse/arch/xeno/kernel/entry.S | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/xenolinux-2.4.21-pre4-sparse/arch/xeno/kernel/entry.S b/xenolinux-2.4.21-pre4-sparse/arch/xeno/kernel/entry.S index 0a6a5374d1..0525e2976e 100644 --- a/xenolinux-2.4.21-pre4-sparse/arch/xeno/kernel/entry.S +++ b/xenolinux-2.4.21-pre4-sparse/arch/xeno/kernel/entry.S @@ -133,6 +133,55 @@ ENOSYS = 38 movl $-8192, reg; \ andl %esp, reg +ENTRY(lcall7) + pushfl # We get a different stack layout with call + pushl %eax # gates, which has to be cleaned up later.. + SAVE_ALL + movl EIP(%esp),%eax # due to call gates, this is eflags, not eip.. + movl CS(%esp),%edx # this is eip.. + movl EFLAGS(%esp),%ecx # and this is cs.. + movl %eax,EFLAGS(%esp) # + andl $~(NT_MASK|TF_MASK|DF_MASK), %eax + pushl %eax + popfl + movl %edx,EIP(%esp) # Now we move them to their "normal" places + movl %ecx,CS(%esp) # + movl %esp,%ebx + pushl %ebx + andl $-8192,%ebx # GET_CURRENT + movl exec_domain(%ebx),%edx # Get the execution domain + movl 4(%edx),%edx # Get the lcall7 handler for the domain + pushl $0x7 + call *%edx + addl $4, %esp + popl %eax + jmp ret_from_sys_call + +ENTRY(lcall27) + pushfl # We get a different stack layout with call + pushl %eax # gates, which has to be cleaned up later.. + SAVE_ALL + movl EIP(%esp),%eax # due to call gates, this is eflags, not eip.. + movl CS(%esp),%edx # this is eip.. + movl EFLAGS(%esp),%ecx # and this is cs.. + movl %eax,EFLAGS(%esp) # + andl $~(NT_MASK|TF_MASK|DF_MASK), %eax + pushl %eax + popfl + movl %edx,EIP(%esp) # Now we move them to their "normal" places + movl %ecx,CS(%esp) # + movl %esp,%ebx + pushl %ebx + andl $-8192,%ebx # GET_CURRENT + movl exec_domain(%ebx),%edx # Get the execution domain + movl 4(%edx),%edx # Get the lcall7 handler for the domain + pushl $0x27 + call *%edx + addl $4, %esp + popl %eax + jmp ret_from_sys_call + + ENTRY(ret_from_fork) pushl %ebx call SYMBOL_NAME(schedule_tail) |