Syscall entry points


Linux uses int 0x80
arguments in registers
pushed onto stack in kernel space
almost normal calling conventions in kernel

Unix uses lcall7 (Solaris lcall27)
arguments are struct in memory
kernel only gets pointer
Unix has strange inkernel syscall calling convetions
Linux-ABI massages it into normal Linux format


Details are in arch/i386/kernel/entry.S
system_call for native binaries
lcall7/lcall27 for Unix binaries