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#include "u.h"
#include "ureg.h"
#include "../port/lib.h"
#include "../port/error.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "io.h"
#include "arm.h"
#include "tos.h"
void (*proctrace)(Proc *, int, vlong);
uintptr
userpc(void)
{
return dbgpc(up);
}
uintptr
dbgpc(Proc *p)
{
Ureg *ureg;
ureg = p->dbgreg;
if(ureg == 0)
return 0;
return ureg->pc;
}
void
setkernur(Ureg *ureg, Proc *p)
{
ureg->pc = p->sched.pc;
ureg->sp = p->sched.sp+4;
ureg->r14 = (ulong) sched;
}
void
setregisters(Ureg *, char *, char *, int)
{
}
void
procsave(Proc *p)
{
uvlong t;
cycles(&t);
p->pcycles += t;
}
void
procrestore(Proc *p)
{
uvlong t;
cycles(&t);
p->pcycles -= t;
}
void
procfork(Proc *)
{
}
void
procsetup(Proc *p)
{
p->fpstate = FPinit;
}
static void
linkproc(void)
{
spllo();
up->kpfun(up->kparg);
pexit("kproc exiting", 0);
}
void
kprocchild(Proc *p, void (*func)(void *), void *arg)
{
p->sched.pc = (ulong) linkproc;
p->sched.sp = (ulong) p->kstack + KSTACK;
p->kpfun = func;
p->kparg = arg;
}
void
forkchild(Proc *p, Ureg *ureg)
{
Ureg *cureg;
p->sched.sp = (ulong) p->kstack + KSTACK - (sizeof(Ureg) + 8);
p->sched.pc = (ulong) forkret;
cureg = (Ureg*) (p->sched.sp + 8);
memmove(cureg, ureg, sizeof(Ureg));
cureg->r0 = 0;
p->psstate = 0;
p->insyscall = 0;
}
uintptr
execregs(uintptr entry, ulong ssize, ulong nargs)
{
ulong *sp;
Ureg *ureg;
sp = (ulong *) (USTKTOP - ssize);
*--sp = nargs;
ureg = up->dbgreg;
memset(ureg, 0, sizeof *ureg);
ureg->psr = PsrMusr;
ureg->sp = (ulong) sp;
ureg->pc = entry;
return USTKTOP - sizeof(Tos);
}
void
evenaddr(uintptr addr)
{
if(addr & 3){
postnote(up, 1, "sys: odd address", NDebug);
error(Ebadarg);
}
}
void
_dumpstack(ulong sp, ulong pc)
{
int x;
uintptr l, v, i, estack;
x = 0;
x += iprint("ktrace /arm/s9panda %#.8lux %#.8lux <<EOF\n",
pc, sp);
i = 0;
if(up
&& (uintptr)&l >= (uintptr)up->kstack
&& (uintptr)&l <= (uintptr)up->kstack+KSTACK)
estack = (uintptr)up->kstack+KSTACK;
else if((uintptr)&l >= (uintptr)(KTZERO - BY2PG)
&& (uintptr)&l <= (uintptr)KTZERO)
estack = (uintptr)KTZERO;
else
return;
x += iprint("estackx %p\n", estack);
for(l = (uintptr)&l; l < estack; l += sizeof(uintptr)){
v = *(uintptr*)l;
if((KTZERO < v && v < (uintptr)etext) || estack-l < 32){
x += iprint("%.8p=%.8p ", l, v);
i++;
}
if(i == 4){
i = 0;
x += iprint("\n");
}
}
if(i)
iprint("\n");
iprint("EOF\n");
}
void
printureg(Ureg *ureg)
{
print("R0 %.8ulx R1 %.8ulx R2 %.8ulx R3 %.8ulx\n", ureg->r0, ureg->r1, ureg->r2, ureg->r3);
print("R4 %.8ulx R5 %.8ulx R6 %.8ulx R7 %.8ulx\n", ureg->r4, ureg->r5, ureg->r6, ureg->r7);
print("R8 %.8ulx R9 %.8ulx R10 %.8ulx R11 %.8ulx\n", ureg->r8, ureg->r9, ureg->r10, ureg->r11);
print("R12 %.8ulx R13 %.8ulx R14 %.8ulx R15 %.8ulx\n", ureg->r12, ureg->r13, ureg->r14, ureg->pc);
print("PSR %.8ulx exception %ld\n", ureg->psr, ureg->type);
}
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