/* $OpenBSD: arm_machdep.c,v 1.1 2004/02/01 05:09:48 drahn Exp $ */
/* $NetBSD: arm_machdep.c,v 1.7 2003/10/25 19:44:42 scw Exp $ */
/*
* Copyright (c) 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 1994-1998 Mark Brinicombe.
* Copyright (c) 1994 Brini.
* All rights reserved.
*
* This code is derived from software written for Brini by Mark Brinicombe
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Mark Brinicombe
* for the NetBSD Project.
* 4. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/exec.h>
#include <sys/proc.h>
#include <sys/systm.h>
#include <sys/user.h>
#include <sys/pool.h>
#include <arm/cpufunc.h>
#include <machine/pcb.h>
#include <machine/vmparam.h>
#include <machine/bus.h>
static __inline struct trapframe *
process_frame(struct proc *p)
{
return (p->p_addr->u_pcb.pcb_tf);
}
/*
* The ARM architecture places the vector page at address 0.
* Later ARM architecture versions, however, allow it to be
* relocated to a high address (0xffff0000). This is primarily
* to support the Fast Context Switch Extension.
*
* This variable contains the address of the vector page. It
* defaults to 0; it only needs to be initialized if we enable
* relocated vectors.
*/
vaddr_t vector_page;
/*
* Clear registers on exec
*/
void
setregs(struct proc *p, struct exec_package *pack, u_long stack,
register_t *retval)
{
struct trapframe *tf;
tf = p->p_addr->u_pcb.pcb_tf;
memset(tf, 0, sizeof(*tf));
/* tf->tf_r0 = (u_int)p->p_proc->p_psstr; */
tf->tf_usr_sp = stack;
tf->tf_usr_lr = pack->ep_entry;
tf->tf_svc_lr = 0x77777777; /* Something we can see */
tf->tf_pc = pack->ep_entry;
#ifdef __PROG32
tf->tf_spsr = PSR_USR32_MODE;
#endif
p->p_addr->u_pcb.pcb_flags = 0;
retval[1] = 0;
}
#if 0
/*
* startlwp:
*
* Start a new LWP.
*/
void
startlwp(void *arg)
{
int err;
ucontext_t *uc = arg;
struct lwp *l = curlwp;
err = cpu_setmcontext(l, &uc->uc_mcontext, uc->uc_flags);
#ifdef DIAGNOSTIC
if (err)
printf("Error %d from cpu_setmcontext.", err);
#endif
pool_put(&lwp_uc_pool, uc);
userret(l);
}
/*
* XXX This is a terrible name.
*/
void
upcallret(struct lwp *l)
{
userret(l);
}
/*
* cpu_upcall:
*
* Send an an upcall to userland.
*/
void
cpu_upcall(struct lwp *l, int type, int nevents, int ninterrupted, void *sas,
void *ap, void *sp, sa_upcall_t upcall)
{
struct trapframe *tf;
struct saframe *sf, frame;
tf = process_frame(l);
/* Finally, copy out the rest of the frame. */
#if 0 /* First 4 args in regs (see below). */
frame.sa_type = type;
frame.sa_sas = sas;
frame.sa_events = nevents;
frame.sa_interrupted = ninterrupted;
#endif
frame.sa_arg = ap;
sf = (struct saframe *)sp - 1;
if (copyout(&frame, sf, sizeof(frame)) != 0) {
/* Copying onto the stack didn't work. Die. */
sigexit(l, SIGILL);
/* NOTREACHED */
}
tf->tf_r0 = type;
tf->tf_r1 = (int) sas;
tf->tf_r2 = nevents;
tf->tf_r3 = ninterrupted;
tf->tf_pc = (int) upcall;
tf->tf_usr_sp = (int) sf;
tf->tf_usr_lr = 0; /* no return */
}
#endif
#define _CONCAT(A,B) A ## B
#define __C(A,B) _CONCAT(A,B)
#define BUS_SPACE_COPY_N(BYTES,TYPE) \
void \
__C(bus_space_copy_,BYTES)(bus_space_tag_t bst, bus_space_handle_t h1, \
bus_size_t o1, bus_space_handle_t h2, bus_size_t o2, \
bus_size_t c) \
{ \
int i; \
\
if (h1 == h2 && o2 > o1) \
for (i = c-1; i >= 0; i--) \
__C(bus_space_write_,BYTES)(bst, h2, o2+(BYTES*i), \
__C(bus_space_read_,BYTES)(bst, h1, o1+(BYTES*i))); \
else \
for (i = 0; i < c; i++) \
__C(bus_space_write_,BYTES)(bst, h2, o2+(BYTES*i), \
__C(bus_space_read_,BYTES)(bst, h1, o1+(BYTES*i))); \
}
BUS_SPACE_COPY_N(1,u_int8_t)
BUS_SPACE_COPY_N(2,u_int16_t)
BUS_SPACE_COPY_N(4,u_int32_t)
#if 0
#define BUS_SPACE_READ_RAW_MULTI_N(BYTES,SHIFT,TYPE) \
void \
__C(bus_space_read_raw_multi_,BYTES)(bus_space_tag_t bst, \
bus_space_handle_t h, bus_addr_t o, u_int8_t *dst, bus_size_t size) \
{ \
TYPE *src; \
TYPE *rdst = (TYPE *)dst; \
int i; \
int count = size >> SHIFT; \
\
src = (TYPE *)(h+o); \
for (i = 0; i < count; i++) { \
rdst[i] = *src; \
} \
}
BUS_SPACE_READ_RAW_MULTI_N(2,1,u_int16_t)
BUS_SPACE_READ_RAW_MULTI_N(4,2,u_int32_t)
#define BUS_SPACE_WRITE_RAW_MULTI_N(BYTES,SHIFT,TYPE) \
void \
__C(bus_space_write_raw_multi_,BYTES)( bus_space_tag_t bst, \
bus_space_handle_t h, bus_addr_t o, const u_int8_t *src, \
bus_size_t size) \
{ \
int i; \
TYPE *dst; \
TYPE *rsrc = (TYPE *)src; \
int count = size >> SHIFT; \
\
dst = (TYPE *)(h+o); \
for (i = 0; i < count; i++) { \
*dst = rsrc[i]; \
} \
}
BUS_SPACE_WRITE_RAW_MULTI_N(2,1,u_int16_t)
BUS_SPACE_WRITE_RAW_MULTI_N(4,2,u_int32_t)
#endif
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