| /* | |
| * arch/arm64/syscall.S | |
| * | |
| * System call common handling - if the return | |
| * value from the system call is negative, then | |
| * extract the magnitude and return it as errno and | |
| * return -1, if the return value is 0 that is | |
| * success case. | |
| */ | |
| .type __syscall_common,#function | |
| .globl __syscall_common | |
| .balign 8 | |
| __syscall_common: | |
| cmp x0, #0x0 | |
| b.ge 2f | |
| neg x0, x0 | |
| ldr x8, 1f | |
| str x0, [x8] | |
| mov x0, #-1 | |
| 2: | |
| ret | |
| 1: | |
| .dword errno |