ref: 17f7f6be4e1a316c0f5f26ff70e047aece4de2bc
dir: /sys/src/libthread/arm.c/
#include <u.h> #include <libc.h> #include <thread.h> #include "threadimpl.h" /* first argument goes in a register; simplest just to ignore it */ static void launcherarm(int, void (*f)(void *arg), void *arg) { (*f)(arg); threadexits(nil); } void _threadinitstack(Thread *t, void (*f)(void*), void *arg) { ulong *tos; tos = (ulong*)&t->stk[t->stksize&~7]; *--tos = (ulong)arg; *--tos = (ulong)f; *--tos = 0; /* first arg to launchermips */ *--tos = 0; /* place to store return PC */ t->sched[JMPBUFPC] = (ulong)launcherarm+JMPBUFDPC; t->sched[JMPBUFSP] = (ulong)tos; }