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Merge "Fix the order of arguments to sys_clone for x86."

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Elliott Hughes 2013-11-27 00:34:44 +00:00 committed by Gerrit Code Review
commit 98c910fb21
1 changed files with 14 additions and 14 deletions
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28
libc/arch-x86/bionic/__bionic_clone.S
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@ -7,29 +7,32 @@ ENTRY(__bionic_clone)
pushl %esi
pushl %edi
# insert arguments onto the child stack
# Align child stack.
movl 20(%esp), %ecx
andl $~15, %ecx
movl 36(%esp), %eax
movl %eax, -16(%ecx)
movl 40(%esp), %eax
movl %eax, -12(%ecx)
# Copy 'fn' and 'arg' onto the child stack
movl 36(%esp), %eax # Read 'fn'.
movl %eax, -16(%ecx) # Write 'fn'.
movl 40(%esp), %eax # Read 'arg'.
movl %eax, -12(%ecx) # Write 'arg'.
subl $16, %ecx
movl 16(%esp), %ebx
movl 24(%esp), %edx
movl 32(%esp), %esi
movl 28(%esp), %edi
# make system call
# Make the system call.
movl $__NR_clone, %eax
movl 16(%esp), %ebx # flags
#movl %ecx, %ecx # child stack (already there)
movl 24(%esp), %edx # parent_tid
movl 28(%esp), %esi # tls
movl 32(%esp), %edi # child_tid
int $0x80
# Check result.
cmpl $0, %eax
je bc_child
jg bc_parent
# an error occurred, set errno and return -1
# An error occurred, so set errno and return -1.
negl %eax
pushl %eax
call __set_errno
@ -38,9 +41,6 @@ ENTRY(__bionic_clone)
jmp bc_return
bc_child:
# we're in the child now, call __bionic_clone_entry
# with the appropriate arguments on the child stack
# we already placed most of them
call __bionic_clone_entry
hlt