| .hidden __sysinfo |
| |
| # We do some gymnastics here to pretend that a call to __syscall |
| # Is actually a call into the __sysinfo function. As they have |
| # the same type we really just want to do a jmp, but need to |
| # do the lookup in a way that supports PIC and not clobber |
| # any registers |
| |
| .global __syscall |
| .hidden __syscall |
| .type __syscall,@function |
| __syscall: |
| subl $4, %esp # Reserve space for tail call |
| push %eax # Save EAX |
| call 1f # Determine our IP |
| 1: mov (%esp),%eax |
| add $[__sysinfo-1b],%eax |
| mov (%eax),%eax |
| test %eax,%eax |
| jz 2f |
| movl %eax, 8(%esp) # Put this in space we reserved |
| addl $4, %esp # Junk our IP |
| popl %eax # Restore eax |
| ret # Tail call |
| 2: addl $4, %esp |
| popl %eax |
| addl $4, %esp |
| int $128 |
| ret |
