syscall.sh / parisc / waitpid

waitpid

wait for process to change state

sys_waitpid(pid_t pid, int *stat_addr, int options)

number	7 (0x7)
abi	common
entry point	`sys_waitpid`
since	Linux 5.0
man page	waitpid(2)
source	elixir.bootlin.com

Registers

register	value
`r20`	7, the syscall number
`r26`	pid_t pid
`r25`	int *stat_addr
`r24`	int options
`r28`	the return value

Then run ble 0x100(%sr2, %r0) to enter the kernel.

Same syscall on other architectures

x86 7
ppc64 7
ppc 7
mipso32 4007
m68k 7
microblaze 7
sh 7
sparc 212
sparc64 212

Get this as JSON: https://api.syscall.sh/v2/syscalls/parisc/waitpid