On Sun Sep 28, 2014 at 03:26:53 +0000, Zachary wrote:
Thank you, Adam. Based on your reply, I have another question.
As the macro defined in L4Re source code, the branch adress is: L4_SYSCALL_INVOKE 0xFFFFFFF4 L4_SYSCALL_MEM_OP 0xFFFFFFF0
This means the "L4_SYSCALL_INVOKE" is at the higher address.
And in asm_entry.h, the syscall table is: .macro GEN_SYSCALL_TABLE .align 4 .global sys_call_table sys_call_table: ... .word sys_kdb_ke .word sys_ipc_wrapper .word sys_arm_mem_op ... .endm
On the contrary, this table tells me that the "sys_ipc_wrapper" is at the lower address, so, why this happens?
The offsets into the table are just calculated so that it works. Please see the usage sites of sys_call_table in the same file.
Adam