/*
* Sandboxed magic_buffer invocation
*
* a0 holds length of the output capabilty, a1 holds the length of the
* magic data, and a2 holds the length of the input file buffer. a3
* indicates if timing data should be collected.
*/
int
invoke(register_t a0, register_t a1, register_t a2, register_t a3)
{
int ret = 0;
size_t outsize, magicsize, filesize;
char *filebuf;
const char *type, *errstr;
void *magicbuf;
magic_t magic;
int dotimings;
uint32_t timings[4];
outsize = a0;
magicsize = a1;
filesize = a2;
dotimings = a3;
if (dotimings)
timings[0] = sysarch(MIPS_GET_COUNT, NULL);
if ((magicbuf = malloc(magicsize)) == NULL)
return (-1);
memcpy_fromcap(magicbuf, MINIFILE_MAGIC_CAP, 0, magicsize);
magic = magic_open(MAGIC_MIME_TYPE);
if (magic == NULL)
return (-1);
if (magic_load_buffers(magic, &magicbuf, &magicsize, 1) == -1) {
magic_close(magic);
return (-1);
}
if ((filebuf = malloc(filesize)) == NULL)
return (-1);
memcpy_fromcap(filebuf, MINIFILE_FILE_CAP, 0, filesize);
if (dotimings)
timings[1] = sysarch(MIPS_GET_COUNT, NULL);
type = magic_buffer(magic, filebuf, filesize);
if (type == NULL) {
ret = -1;
errstr = magic_error(magic);
type = (errstr == NULL ? "badmagic" : errstr);
}
if (dotimings)
timings[2] = sysarch(MIPS_GET_COUNT, NULL);
memcpy_tocap(MINIFILE_OUT_CAP, type, 0, MIN(strlen(type) + 1, outsize));
if (dotimings) {
timings[3] = sysarch(MIPS_GET_COUNT, NULL);
memcpy_tocap(MINIFILE_TIMING_CAP, timings, 0,
(4 * sizeof(uint32_t)));
}
return (ret);
}
int
i386_set_ioperm(unsigned int start, unsigned int length, int enable) {
struct i386_ioperm_args p;
p.start = start;
p.length = length;
p.enable = enable;
return (sysarch(I386_SET_IOPERM, &p));
}
fp_except
fpsetmask(fp_except mask)
{
struct alpha_fp_except_args a;
a.mask = mask;
return sysarch(ALPHA_FPSETMASK, &a);
}
fp_except
fpsetsticky(fp_except sticky)
{
struct alpha_fp_except_args a;
a.mask = sticky;
return sysarch(ALPHA_FPSETSTICKY, &a);
}
int
x86_64_get_mtrr(struct mtrr *mtrrp, int *n)
{
struct x86_64_get_mtrr_args a;
a.mtrrp = mtrrp;
a.n = n;
return sysarch(X86_64_GET_MTRR, (void *)&a);
}
int
i386_iopl(int iopl)
{
struct i386_iopl_args p;
p.iopl = iopl;
return sysarch(I386_IOPL, &p);
}
int
arm_sync_icache(uintptr_t addr, size_t len)
{
struct arm_sync_icache_args p;
p.addr = addr;
p.len = len;
return sysarch(ARM_SYNC_ICACHE, (void *)&p);
}
int
cacheflush(void *addr, int nbytes, int cache)
{
struct mips64_cacheflush_args args;
args.va = (vaddr_t)addr;
args.sz = (size_t)nbytes;
args.which = cache;
return sysarch(MIPS64_CACHEFLUSH, (void *)&args);
}
void
_set_tp(void *tp)
{
#ifdef ARM_TP_ADDRESS
*((struct tcb **)ARM_TP_ADDRESS) = tp;
#else
sysarch(ARM_SET_TP, tp);
#endif
}
int
_cacheflush(void *addr, size_t nbytes, int whichcache)
{
struct mips_cacheflush_args cfa;
cfa.va = (vaddr_t)(intptr_t)addr;
cfa.nbytes = nbytes;
cfa.whichcache = whichcache;
return sysarch(MIPS_CACHEFLUSH, (void *)&cfa);
}
int
amd64_set_fsbase(void *addr)
{
if (amd64_detect_rdfsgsbase() == RDFSGS_SUPPORTED) {
wrfsbase((uintptr_t)addr);
return (0);
}
return (sysarch(AMD64_SET_FSBASE, &addr));
}
int
x86_pkru_unprotect_range(void *addr, unsigned long len)
{
struct amd64_set_pkru a64pkru;
memset(&a64pkru, 0, sizeof(a64pkru));
a64pkru.addr = addr;
a64pkru.len = len;
return (sysarch(X86_CLEAR_PKRU, &a64pkru));
}
int
i386_vm86(int fcn, void *data)
{
struct i386_vm86_args p;
p.sub_op = fcn;
p.sub_args = (char *)data;
return (sysarch(I386_VM86, &p));
}
int
i386_set_ldt(int start, union descriptor *descs, int num)
{
struct i386_ldt_args p;
p.start = start;
p.descs = descs;
p.num = num;
return sysarch(I386_SET_LDT, &p);
}
int
x86_pkru_protect_range(void *addr, unsigned long len, u_int keyidx, int flags)
{
struct amd64_set_pkru a64pkru;
memset(&a64pkru, 0, sizeof(a64pkru));
a64pkru.addr = addr;
a64pkru.len = len;
a64pkru.keyidx = keyidx;
a64pkru.flags = flags;
return (sysarch(X86_SET_PKRU, &a64pkru));
}
void *
__tls_get_addr(tls_index* ti)
{
Elf_Addr** tls;
char *p;
sysarch(MIPS_GET_TLS, &tls);
p = tls_get_addr_common(tls, ti->ti_module, ti->ti_offset + TLS_DTP_OFFSET);
return (p);
}
static struct pci_io_handle *
pci_device_openbsd_open_legacy_io(struct pci_io_handle *ret,
struct pci_device *dev, pciaddr_t base, pciaddr_t size)
{
#if defined(__i386__)
struct i386_iopl_args ia;
#elif defined(__amd64__)
struct amd64_iopl_args ia;
#endif
/* With X server privilege separation, i/o access is
enabled early and never disabled, allow recursive,
privilege-less calls */
if (legacy_io_handle != NULL) {
ret->base = legacy_io_handle->base;
ret->size = legacy_io_handle->size;
ret->memory = legacy_io_handle->memory;
return ret;
}
#if defined(__i386__)
ia.iopl = 1;
if (sysarch(I386_IOPL, &ia))
return NULL;
#elif defined(__amd64__)
ia.iopl = 1;
if (sysarch(AMD64_IOPL, &ia))
return NULL;
#elif defined(PCI_MAGIC_IO_RANGE)
ret->memory = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED,
aperturefd, PCI_MAGIC_IO_RANGE + base);
if (ret->memory == MAP_FAILED)
return NULL;
#else
return NULL;
#endif
ret->base = base;
ret->size = size;
legacy_io_handle = ret;
return ret;
}
static int
sethae(u_int64_t hae)
{
#ifdef __FreeBSD__
#ifndef ALPHA_SETHAE
#define ALPHA_SETHAE 0
#endif
struct parms p;
p.hae = hae;
return (sysarch(ALPHA_SETHAE, (char *)&p));
#endif
#ifdef __OpenBSD__
return -1;
#endif
}
void
allocate_initial_tls(Obj_Entry *objs)
{
char *tls;
/*
* Fix the size of the static TLS block by using the maximum
* offset allocated so far and adding a bit for dynamic modules to
* use.
*/
tls_static_space = tls_last_offset + tls_last_size + RTLD_STATIC_TLS_EXTRA;
tls = (char *) allocate_tls(objs, NULL, TLS_TCB_SIZE, 8);
sysarch(MIPS_SET_TLS, tls);
}
int
i386_get_ioperm(unsigned int start, unsigned int *length, int *enable)
{
struct i386_ioperm_args p;
int error;
p.start = start;
p.length = *length;
p.enable = *enable;
error = sysarch(I386_GET_IOPERM, &p);
*length = p.length;
*enable = p.enable;
return (error);
}
int
__sparc_utrap_install(utrap_entry_t type, utrap_handler_t new_precise,
utrap_handler_t new_deferred, utrap_handler_t *old_precise,
utrap_handler_t *old_deferred)
{
struct sparc_utrap_install_args uia;
struct sparc_utrap_args ua[1];
ua[0].type = type;
ua[0].new_precise = new_precise;
ua[0].new_deferred = new_deferred;
ua[0].old_precise = old_precise;
ua[0].old_deferred = old_deferred;
uia.num = 1;
uia.handlers = ua;
return (sysarch(SPARC_UTRAP_INSTALL, &uia));
}
register_t
cheritest_libcheri_userfn_getstack(void)
{
struct cheri_stack cs;
struct cheri_stack_frame *csfp;
u_int stack_depth;
int retval;
retval = sysarch(CHERI_GET_STACK, &cs);
if (retval != 0)
cheritest_failure_err("sysarch(CHERI_GET_STACK) failed");
/* Does stack layout look sensible enough to continue? */
if ((cs.cs_tsize % CHERI_FRAME_SIZE) != 0)
cheritest_failure_errx(
"stack size (%ld) not a multiple of frame size",
cs.cs_tsize);
stack_depth = cs.cs_tsize / CHERI_FRAME_SIZE;
if ((cs.cs_tsp % CHERI_FRAME_SIZE) != 0)
cheritest_failure_errx(
"stack pointer (%ld) not a multiple of frame size",
cs.cs_tsp);
/* Validate that two stack frames are found. */
if (cs.cs_tsp != cs.cs_tsize - (register_t)(2 * CHERI_FRAME_SIZE))
cheritest_failure_errx("stack contains %d frames; expected "
"2", (cs.cs_tsize - (2 * CHERI_FRAME_SIZE)) /
CHERI_FRAME_SIZE);
/* Validate that the first is a saved ambient context. */
csfp = &cs.cs_frames[stack_depth - 1];
if (cheri_getbase(csfp->csf_pcc) != cheri_getbase(cheri_getpcc()) ||
cheri_getlen(csfp->csf_pcc) != cheri_getlen(cheri_getpcc()))
cheritest_failure_errx("frame 0: not global code cap");
/* Validate that the second is cheritest_objectp. */
csfp = &cs.cs_frames[stack_depth - 2];
if ((cheri_getbase(csfp->csf_pcc) != cheri_getbase(
sandbox_object_getobject(cheritest_objectp).co_codecap)) ||
cheri_getlen(csfp->csf_pcc) != cheri_getlen(
sandbox_object_getobject(cheritest_objectp).co_codecap))
cheritest_failure_errx("frame 1: not sandbox code cap");
return (0);
}
/*
* Return the number of frames on the trusted stack.
*/
int
cheri_stack_numframes(int *numframesp)
{
struct cheri_stack cs;
/*
* Retrieve trusted stack and validate before returning a frame count.
*/
if (sysarch(CHERI_GET_STACK, &cs) != 0)
return (-1);
if ((cs.cs_tsize % CHERI_FRAME_SIZE) != 0 ||
(cs.cs_tsp > cs.cs_tsize) ||
(cs.cs_tsp % CHERI_FRAME_SIZE) != 0) {
errno = ERANGE;
return (-1);
}
*numframesp = (cs.cs_tsize - cs.cs_tsp) / CHERI_FRAME_SIZE;
return (0);
}
int
__fillcontextx2(char *ctx)
{
struct ucontextx *ucxp;
ucontext_t *ucp;
mcontext_vfp_t *mvp;
struct arm_get_vfpstate_args vfp_arg;
ucxp = (struct ucontextx *)ctx;
ucp = &ucxp->ucontext;
mvp = &ucxp->mcontext_vfp;
vfp_arg.mc_vfp_size = sizeof(mcontext_vfp_t);
vfp_arg.mc_vfp = mvp;
if (sysarch(ARM_GET_VFPSTATE, &vfp_arg) == -1)
return (-1);
ucp->uc_mcontext.mc_vfp_size = sizeof(mcontext_vfp_t);
ucp->uc_mcontext.mc_vfp_ptr = mvp;
return (0);
}
int
__fillcontextx2(char *ctx)
{
struct amd64_get_xfpustate xfpu;
ucontext_t *ucp;
ucp = (ucontext_t *)ctx;
if (xstate_sz != 0) {
xfpu.addr = (char *)(ucp + 1);
xfpu.len = xstate_sz;
if (sysarch(AMD64_GET_XFPUSTATE, &xfpu) == -1)
return (-1);
ucp->uc_mcontext.mc_xfpustate = (__register_t)xfpu.addr;
ucp->uc_mcontext.mc_xfpustate_len = xstate_sz;
ucp->uc_mcontext.mc_flags |= _MC_HASFPXSTATE;
} else {
ucp->uc_mcontext.mc_xfpustate = 0;
ucp->uc_mcontext.mc_xfpustate_len = 0;
}
return (0);
}
void __clear_cache(void* start, void* end)
{
#if __i386__ || __x86_64__
/*
* Intel processors have a unified instruction and data cache
* so there is nothing to do
*/
#elif defined(__NetBSD__) && defined(__arm__)
struct arm_sync_icache_args arg;
arg.addr = (uintptr_t)start;
arg.len = (uintptr_t)end - (uintptr_t)start;
sysarch(ARM_SYNC_ICACHE, &arg);
#else
#if __APPLE__
/* On Darwin, sys_icache_invalidate() provides this functionality */
sys_icache_invalidate(start, end-start);
#else
compilerrt_abort();
#endif
#endif
}
int
freebsd32_sysarch(struct thread *td, struct freebsd32_sysarch_args *uap)
{
struct sysarch_args uap1;
struct i386_ldt_args uapl;
struct i386_ldt_args32 uapl32;
int error;
if (uap->op == I386_SET_LDT || uap->op == I386_GET_LDT) {
if ((error = copyin(uap->parms, &uapl32, sizeof(uapl32))) != 0)
return (error);
uap1.op = uap->op;
uap1.parms = (char *)&uapl;
uapl.start = uapl32.start;
uapl.descs = (struct user_segment_descriptor *)(uintptr_t)
uapl32.descs;
uapl.num = uapl32.num;
return (sysarch_ldt(td, &uap1, UIO_SYSSPACE));
} else {
uap1.op = uap->op;
uap1.parms = uap->parms;
return (sysarch(td, &uap1));
}
}
void
__sparc_utrap_setup(void)
{
sysarch(SPARC_UTRAP_INSTALL, (void *)&uia);
}
fp_except
fpgetsticky(void)
{
return sysarch(ALPHA_FPGETSTICKY, 0L);
}
int
gc_cheri_get_ts(_gc_cap struct gc_ts *buf)
{
return (sysarch(CHERI_GET_STACK, (void *)&buf->gts_cs));
}
