HelenOS sources
t0 90 kernel/arch/mips32/include/arch/istate_struct.h uint32_t t0; // arg5
t0 86 kernel/arch/mips32/src/exception.c istate->t0, istate->t1, istate->t2, istate->t3);
t0 100 uspace/lib/c/arch/mips32/include/libarch/elf_linux.h elf_regs->r8 = istate->t0;
t0 90 uspace/lib/c/arch/mips32/include/libarch/istate_struct.h uint32_t t0; // arg5
t0 264 uspace/lib/console/src/console.c struct timespec t0;
t0 265 uspace/lib/console/src/console.c getuptime(&t0);
t0 295 uspace/lib/console/src/console.c *timeout -= NSEC2USEC(ts_sub_diff(&t1, &t0));
HelenOS homepage, sources at GitHub