gbos.git/c/kill.c, branch master gbos - a tiny Unix-flavored OS for the Game Boy Color (kernel, shell, coreutils in C, RAM filesystem) https://git.sl0p.foo/gbos.git/atom/c/kill.c?h=master 2026-07-17T22:38:38Z refactor: c/ -> usr/, compiled program blobs out of the source tree 2026-07-17T22:38:38Z user user@clank 2026-07-17T22:38:38Z urn:sha1:ba2d7ae1d7b319645b10aaa31a7f664f9f80c25c Userland sources live in usr/ (fits the Unix theme better than 'c'). SDCC output .bin blobs land in build/usr/ with the other build artifacts instead of littering the source dir; programs.asm INCBINs them from there. Byte-identical ROM. kill + ps: implement SYS_KILL (pid 1 immortal) and a ps tool 2026-07-16T09:10:45Z user user@clank 2026-07-16T09:10:45Z urn:sha1:2d3597c3a02f821bb364b8ecc23fc5949fca738d - PCB gains PROC_PROG (running program id), set by exec, inherited on fork. - sys_kill(pid): reject pid 1 (immortal) and unknown/dead pids; mark the target zombie, reparent its children to init, wake its parent if blocked in wait; schedule away if a process kills itself. Reuses FindPcbByPid/ReparentToInit. - sys_ps(slot,buf)->{pid,state,prog}; sys_progname(id) via NameTable reverse lookup. NameTable gains sh/ps/kill. - libc: kill/psget/progname; tools ps (pid state cmd) and kill <pid>. - verified: ps lists sh(B)+ps(R); kill 1 refused; kill 42 fails.