pivot_root on tilepro

change the root mount

sys_pivot_root(const char *new_root, const char *put_old)
number41 (0x29)
abicommon
entry pointsys_pivot_root
sinceLinux 3.7 or earlier (3.7 is the first release scanned for tilepro)
man pagepivot_root(2)
sourceelixir.bootlin.com

Registers

registervalue
r1041, the syscall number
r0const char *new_root
r1const char *put_old
r0the return value

Then run swint1 to enter the kernel.

The kernel uses r1 to signal an error for ordinary calls.

Fast atomic calls use negative numbers and have different register behavior.

This architecture was removed from the Linux kernel in Linux 4.17. The newest release with a syscall table here is Linux 4.16. The other removed architectures live on the historical architectures page.

Same syscall on other architectures

Get this as JSON: https://api.syscall.sh/v2/syscalls/tilepro/pivot_root?kernel=all