/* $NetBSD: bugstart.S,v 1.1 2014/11/21 20:10:28 christos Exp $ */

/* $NetBSD: bugstart.S,v 1.1 2014/11/21 20:10:28 christos Exp $ */

#define _LOCORE
#include <machine/prom.h>
#undef _LOCORE
#include <machine/asm.h>

.data
.even

GLOBAL(bugargs)
.space MVMEPROM_ARGS_MAX*4

.text
.even

.long _C_LABEL(start) - 0x10
.long _C_LABEL(start)

#define BUG_ARG(which) _C_LABEL(bugargs) + (which)

ENTRY_NOPROFILE(_start)
ENTRY_NOPROFILE(start)
moveml %d0/%a0,%sp@-
lea _C_LABEL(edata),%a0
movl #_C_LABEL(end) - 4,%d0
subl %a0,%d0
lsrl #2,%d0
1: clrl %a0@+
dbra %d0,1b
moveml %sp@+,%d0/%a0
movl MVMEPROM_REG_DEVLUN, BUG_ARG(MVMEPROM_ARGS_DEVLUN)
movl MVMEPROM_REG_CTRLLUN, BUG_ARG(MVMEPROM_ARGS_CTRLLUN)
movl MVMEPROM_REG_FLAGS, BUG_ARG(MVMEPROM_ARGS_FLAGS)
movl MVMEPROM_REG_CTRLADDR, BUG_ARG(MVMEPROM_ARGS_CTRLADDR)
movl MVMEPROM_REG_ENTRY, BUG_ARG(MVMEPROM_ARGS_ENTRY)
movl MVMEPROM_REG_CONFBLK, BUG_ARG(MVMEPROM_ARGS_CONFBLK)
movl MVMEPROM_REG_NBARGSTART, BUG_ARG(MVMEPROM_ARGS_NBARGSTART)
movl MVMEPROM_REG_NBARGEND, BUG_ARG(MVMEPROM_ARGS_NBARGEND)
movl MVMEPROM_REG_ARGSTART, BUG_ARG(MVMEPROM_ARGS_ARGSTART)
movl MVMEPROM_REG_ARGEND, BUG_ARG(MVMEPROM_ARGS_ARGEND)
jmp _C_LABEL(_bugstart)

ENTRY_NOPROFILE(bugexec)
addql #4,%sp
movl BUG_ARG(MVMEPROM_ARGS_DEVLUN), MVMEPROM_REG_DEVLUN
movl BUG_ARG(MVMEPROM_ARGS_CTRLLUN), MVMEPROM_REG_CTRLLUN
movl BUG_ARG(MVMEPROM_ARGS_FLAGS), MVMEPROM_REG_FLAGS
movl BUG_ARG(MVMEPROM_ARGS_CTRLADDR), MVMEPROM_REG_CTRLADDR
movl BUG_ARG(MVMEPROM_ARGS_ENTRY), MVMEPROM_REG_ENTRY
movl BUG_ARG(MVMEPROM_ARGS_CONFBLK), MVMEPROM_REG_CONFBLK
movl BUG_ARG(MVMEPROM_ARGS_NBARGSTART), MVMEPROM_REG_NBARGSTART
movl BUG_ARG(MVMEPROM_ARGS_NBARGEND), MVMEPROM_REG_NBARGEND
movl BUG_ARG(MVMEPROM_ARGS_ARGSTART), MVMEPROM_REG_ARGSTART
movl BUG_ARG(MVMEPROM_ARGS_ARGEND), MVMEPROM_REG_ARGEND
ENTRY_NOPROFILE(__main)
rts