Minimal set of diffs from the i386 bits to the AlphaLinux.

Submitted by:	gallatin (content, minimization by me)
This commit is contained in:
David E. O'Brien 2000-09-07 06:12:41 +00:00
parent 2440c807a3
commit ab721da874
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=65563

View File

@ -30,34 +30,21 @@
#include <sys/param.h>
#include <sys/mman.h>
#include <sys/proc.h>
#include <sys/mount.h>
#include <sys/sysproto.h>
#include <sys/systm.h>
#include <sys/unistd.h>
#include <machine/frame.h>
#include <machine/psl.h>
#include <machine/segments.h>
#include <machine/sysarch.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <i386/linux/linux.h>
#include <i386/linux/linux_proto.h>
#include <compat/linux/linux_ipc.h>
#include <sys/user.h>
#include <alpha/linux/linux.h>
#include <alpha/linux/linux_proto.h>
#include <compat/linux/linux_signal.h>
#include <compat/linux/linux_util.h>
struct linux_descriptor {
unsigned int entry_number;
unsigned long base_addr;
unsigned int limit;
unsigned int seg_32bit:1;
unsigned int contents:2;
unsigned int read_exec_only:1;
unsigned int limit_in_pages:1;
unsigned int seg_not_present:1;
unsigned int useable:1;
};
struct linux_select_argv {
int nfds;
fd_set *readfds;
@ -86,61 +73,6 @@ linux_execve(struct proc *p, struct linux_execve_args *args)
return (execve(p, &bsd));
}
int
linux_ipc(struct proc *p, struct linux_ipc_args *args)
{
switch (args->what) {
case LINUX_SEMOP:
return (linux_semop(p, args));
case LINUX_SEMGET:
return (linux_semget(p, args));
case LINUX_SEMCTL:
return (linux_semctl(p, args));
case LINUX_MSGSND:
return (linux_msgsnd(p, args));
case LINUX_MSGRCV:
return (linux_msgrcv(p, args));
case LINUX_MSGGET:
return (linux_msgget(p, args));
case LINUX_MSGCTL:
return (linux_msgctl(p, args));
case LINUX_SHMAT:
return (linux_shmat(p, args));
case LINUX_SHMDT:
return (linux_shmdt(p, args));
case LINUX_SHMGET:
return (linux_shmget(p, args));
case LINUX_SHMCTL:
return (linux_shmctl(p, args));
}
uprintf("LINUX: 'ipc' typ=%d not implemented\n", args->what);
return (ENOSYS);
}
int
linux_select(struct proc *p, struct linux_select_args *args)
{
struct linux_select_argv linux_args;
struct linux_newselect_args newsel;
int error;
#ifdef SELECT_DEBUG
printf("Linux-emul(%ld): select(%x)\n", (long)p->p_pid, args->ptr);
#endif
error = copyin(args->ptr, &linux_args, sizeof(linux_args));
if (error)
return (error);
newsel.nfds = linux_args.nfds;
newsel.readfds = linux_args.readfds;
newsel.writefds = linux_args.writefds;
newsel.exceptfds = linux_args.exceptfds;
newsel.timeout = linux_args.timeout;
return (linux_newselect(p, &newsel));
}
int
linux_fork(struct proc *p, struct linux_fork_args *args)
{
@ -184,78 +116,14 @@ linux_vfork(struct proc *p, struct linux_vfork_args *args)
int
linux_clone(struct proc *p, struct linux_clone_args *args)
{
int error, ff = RFPROC;
struct proc *p2;
int exit_signal;
vm_offset_t start;
struct rfork_args rf_args;
#ifdef DEBUG
if (args->flags & CLONE_PID)
printf("linux_clone(%ld): CLONE_PID not yet supported\n",
(long)p->p_pid);
printf("linux_clone(%ld): invoked with flags %x and stack %x\n",
(long)p->p_pid, (unsigned int)args->flags,
(unsigned int)args->stack);
#endif
if (!args->stack)
return (EINVAL);
exit_signal = args->flags & 0x000000ff;
if (exit_signal >= LINUX_NSIG)
return (EINVAL);
if (exit_signal <= LINUX_SIGTBLSZ)
exit_signal = linux_to_bsd_signal[_SIG_IDX(exit_signal)];
/* RFTHREAD probably not necessary here, but it shouldn't hurt */
ff |= RFTHREAD;
if (args->flags & CLONE_VM)
ff |= RFMEM;
if (args->flags & CLONE_SIGHAND)
ff |= RFSIGSHARE;
if (!(args->flags & CLONE_FILES))
ff |= RFFDG;
error = 0;
start = 0;
rf_args.flags = ff;
if ((error = rfork(p, &rf_args)) != 0)
return (error);
p2 = pfind(p->p_retval[0]);
if (p2 == 0)
return (ESRCH);
p2->p_sigparent = exit_signal;
p2->p_md.md_regs->tf_esp = (unsigned int)args->stack;
#ifdef DEBUG
printf ("linux_clone(%ld): successful rfork to %ld\n", (long)p->p_pid,
(long)p2->p_pid);
#endif
return (0);
return ENOSYS;
}
/* XXX move */
struct linux_mmap_argv {
linux_caddr_t addr;
int len;
int prot;
int flags;
int fd;
int pos;
};
#define STACK_SIZE (2 * 1024 * 1024)
#define GUARD_SIZE (4 * PAGE_SIZE)
#define STACK_SIZE (2 * 1024 * 1024)
#define GUARD_SIZE (4 * PAGE_SIZE)
int
linux_mmap(struct proc *p, struct linux_mmap_args *args)
linux_mmap(struct proc *p, struct linux_mmap_args *linux_args)
{
struct mmap_args /* {
caddr_t addr;
@ -267,28 +135,28 @@ linux_mmap(struct proc *p, struct linux_mmap_args *args)
off_t pos;
} */ bsd_args;
int error;
struct linux_mmap_argv linux_args;
error = copyin(args->ptr, &linux_args, sizeof(linux_args));
if (error)
return (error);
#ifdef DEBUG
printf("Linux-emul(%ld): mmap(%p, %d, %d, 0x%08x, %d, %d)",
(long)p->p_pid, (void *)linux_args.addr, linux_args.len,
linux_args.prot, linux_args.flags, linux_args.fd, linux_args.pos);
printf("Linux-emul(%ld): mmap(%p, 0x%lx, 0x%x, 0x%x, 0x%x, 0x%lx)\n",
(long)p->p_pid, (void *)linux_args->addr, linux_args->len,
linux_args->prot, linux_args->flags, linux_args->fd, linux_args->pos);
#endif
bsd_args.prot = linux_args->prot | PROT_READ; /* always required */
bsd_args.flags = 0;
if (linux_args.flags & LINUX_MAP_SHARED)
if (linux_args->flags & LINUX_MAP_SHARED)
bsd_args.flags |= MAP_SHARED;
if (linux_args.flags & LINUX_MAP_PRIVATE)
if (linux_args->flags & LINUX_MAP_PRIVATE)
bsd_args.flags |= MAP_PRIVATE;
if (linux_args.flags & LINUX_MAP_FIXED)
if (linux_args->flags & LINUX_MAP_FIXED){
bsd_args.flags |= MAP_FIXED;
if (linux_args.flags & LINUX_MAP_ANON)
bsd_args.pos = trunc_page(linux_args->pos);
} else {
bsd_args.pos = linux_args->pos;
}
if (linux_args->flags & LINUX_MAP_ANON)
bsd_args.flags |= MAP_ANON;
if (linux_args.flags & LINUX_MAP_GROWSDOWN) {
if (linux_args->flags & LINUX_MAP_GROWSDOWN) {
bsd_args.flags |= MAP_STACK;
/* The linux MAP_GROWSDOWN option does not limit auto
@ -313,11 +181,11 @@ linux_mmap(struct proc *p, struct linux_mmap_args *args)
*/
/* This gives us TOS */
bsd_args.addr = linux_args.addr + linux_args.len;
bsd_args.addr = linux_args->addr + linux_args->len;
/* This gives us our maximum stack size */
if (linux_args.len > STACK_SIZE - GUARD_SIZE)
bsd_args.len = linux_args.len;
if (linux_args->len > STACK_SIZE - GUARD_SIZE)
bsd_args.len = linux_args->len;
else
bsd_args.len = STACK_SIZE - GUARD_SIZE;
@ -328,222 +196,37 @@ linux_mmap(struct proc *p, struct linux_mmap_args *args)
* don't have a way to autogrow it.
*/
bsd_args.addr -= bsd_args.len;
bsd_args.addr = (caddr_t)round_page(bsd_args.addr); /* XXXX */
} else {
bsd_args.addr = linux_args.addr;
bsd_args.len = linux_args.len;
bsd_args.addr = linux_args->addr;
bsd_args.len = linux_args->len;
}
bsd_args.prot = linux_args.prot | PROT_READ; /* always required */
if (linux_args.flags & LINUX_MAP_ANON)
bsd_args.fd = linux_args->fd;
if(linux_args->fd == 0)
bsd_args.fd = -1;
else
bsd_args.fd = linux_args.fd;
bsd_args.pos = linux_args.pos;
bsd_args.pad = 0;
#ifdef DEBUG
printf("-> (%p, %d, %d, 0x%08x, %d, %d)\n", (void *)bsd_args.addr,
bsd_args.len, bsd_args.prot, bsd_args.flags, bsd_args.fd,
(int)bsd_args.pos);
printf("Linux-emul(%ld): mmap(%p, 0x%lx, 0x%x, 0x%x, 0x%x, 0x%lx)\n",
(long)p->p_pid,
(void *)bsd_args.addr,
bsd_args.len,
bsd_args.prot,
bsd_args.flags,
bsd_args.fd,
bsd_args.pos);
#endif
return (mmap(p, &bsd_args));
}
int
linux_pipe(struct proc *p, struct linux_pipe_args *args)
{
int error;
int reg_edx;
if (bsd_args.addr == 0)
bsd_args.addr = (caddr_t)0x40000000UL;
error = mmap(p, &bsd_args);
#ifdef DEBUG
printf("Linux-emul(%ld): pipe(*)\n", (long)p->p_pid);
printf("Linux-emul(%ld): mmap returns %d, 0x%lx\n",
(long)p->p_pid, error, p->p_retval[0]);
#endif
reg_edx = p->p_retval[1];
error = pipe(p, 0);
if (error) {
p->p_retval[1] = reg_edx;
return (error);
}
error = copyout(p->p_retval, args->pipefds, 2*sizeof(int));
if (error) {
p->p_retval[1] = reg_edx;
return (error);
}
p->p_retval[1] = reg_edx;
p->p_retval[0] = 0;
return (0);
}
int
linux_ioperm(struct proc *p, struct linux_ioperm_args *args)
{
struct sysarch_args sa;
struct i386_ioperm_args *iia;
caddr_t sg;
sg = stackgap_init();
iia = stackgap_alloc(&sg, sizeof(struct i386_ioperm_args));
iia->start = args->start;
iia->length = args->length;
iia->enable = args->enable;
sa.op = I386_SET_IOPERM;
sa.parms = (char *)iia;
return (sysarch(p, &sa));
}
int
linux_iopl(struct proc *p, struct linux_iopl_args *args)
{
int error;
if (args->level < 0 || args->level > 3)
return (EINVAL);
if ((error = suser(p)) != 0)
return (error);
if (securelevel > 0)
return (EPERM);
p->p_md.md_regs->tf_eflags = (p->p_md.md_regs->tf_eflags & ~PSL_IOPL) |
(args->level * (PSL_IOPL / 3));
return (0);
}
int
linux_modify_ldt(p, uap)
struct proc *p;
struct linux_modify_ldt_args *uap;
{
int error;
caddr_t sg;
struct sysarch_args args;
struct i386_ldt_args *ldt;
struct linux_descriptor ld;
union descriptor *desc;
sg = stackgap_init();
if (uap->ptr == NULL)
return (EINVAL);
switch (uap->func) {
case 0x00: /* read_ldt */
ldt = stackgap_alloc(&sg, sizeof(*ldt));
ldt->start = 0;
ldt->descs = uap->ptr;
ldt->num = uap->bytecount / sizeof(union descriptor);
args.op = I386_GET_LDT;
args.parms = (char*)ldt;
error = sysarch(p, &args);
p->p_retval[0] *= sizeof(union descriptor);
break;
case 0x01: /* write_ldt */
case 0x11: /* write_ldt */
if (uap->bytecount != sizeof(ld))
return (EINVAL);
error = copyin(uap->ptr, &ld, sizeof(ld));
if (error)
return (error);
ldt = stackgap_alloc(&sg, sizeof(*ldt));
desc = stackgap_alloc(&sg, sizeof(*desc));
ldt->start = ld.entry_number;
ldt->descs = desc;
ldt->num = 1;
desc->sd.sd_lolimit = (ld.limit & 0x0000ffff);
desc->sd.sd_hilimit = (ld.limit & 0x000f0000) >> 16;
desc->sd.sd_lobase = (ld.base_addr & 0x00ffffff);
desc->sd.sd_hibase = (ld.base_addr & 0xff000000) >> 24;
desc->sd.sd_type = SDT_MEMRO | ((ld.read_exec_only ^ 1) << 1) |
(ld.contents << 2);
desc->sd.sd_dpl = 3;
desc->sd.sd_p = (ld.seg_not_present ^ 1);
desc->sd.sd_xx = 0;
desc->sd.sd_def32 = ld.seg_32bit;
desc->sd.sd_gran = ld.limit_in_pages;
args.op = I386_SET_LDT;
args.parms = (char*)ldt;
error = sysarch(p, &args);
break;
default:
error = EINVAL;
break;
}
if (error == EOPNOTSUPP) {
printf("linux: modify_ldt needs kernel option USER_LDT\n");
error = ENOSYS;
}
return (error);
}
int
linux_sigaction(struct proc *p, struct linux_sigaction_args *args)
{
linux_osigaction_t osa;
linux_sigaction_t act, oact;
int error;
#ifdef DEBUG
printf("Linux-emul(%ld): sigaction(%d, %p, %p)\n", (long)p->p_pid,
args->sig, (void *)args->nsa, (void *)args->osa);
#endif
if (args->nsa != NULL) {
error = copyin(args->nsa, &osa, sizeof(linux_osigaction_t));
if (error)
return (error);
act.lsa_handler = osa.lsa_handler;
act.lsa_flags = osa.lsa_flags;
act.lsa_restorer = osa.lsa_restorer;
LINUX_SIGEMPTYSET(act.lsa_mask);
act.lsa_mask.__bits[0] = osa.lsa_mask;
}
error = linux_do_sigaction(p, args->sig, args->nsa ? &act : NULL,
args->osa ? &oact : NULL);
if (args->osa != NULL && !error) {
osa.lsa_handler = oact.lsa_handler;
osa.lsa_flags = oact.lsa_flags;
osa.lsa_restorer = oact.lsa_restorer;
osa.lsa_mask = oact.lsa_mask.__bits[0];
error = copyout(&osa, args->osa, sizeof(linux_osigaction_t));
}
return (error);
}
/*
* Linux has two extra args, restart and oldmask. We dont use these,
* but it seems that "restart" is actually a context pointer that
* enables the signal to happen with a different register set.
*/
int
linux_sigsuspend(struct proc *p, struct linux_sigsuspend_args *args)
{
struct sigsuspend_args bsd;
sigset_t *sigmask;
linux_sigset_t mask;
caddr_t sg = stackgap_init();
#ifdef DEBUG
printf("Linux-emul(%ld): sigsuspend(%08lx)\n",
(long)p->p_pid, (unsigned long)args->mask);
#endif
sigmask = stackgap_alloc(&sg, sizeof(sigset_t));
LINUX_SIGEMPTYSET(mask);
mask.__bits[0] = args->mask;
linux_to_bsd_sigset(&mask, sigmask);
bsd.sigmask = sigmask;
return (sigsuspend(p, &bsd));
}
int
linux_rt_sigsuspend(p, uap)
struct proc *p;
@ -574,62 +257,100 @@ linux_rt_sigsuspend(p, uap)
}
int
linux_pause(struct proc *p, struct linux_pause_args *args)
linux_mprotect(p, uap)
struct proc *p;
struct linux_mprotect_args *uap;
{
struct sigsuspend_args bsd;
sigset_t *sigmask;
caddr_t sg = stackgap_init();
#ifdef DEBUG
printf("Linux-emul(%d): pause()\n", p->p_pid);
printf("Linux-emul(%ld): mprotect(%p, 0x%lx, 0x%x)\n",
(long)p->p_pid, (void *)uap->addr, uap->len, uap->prot);
#endif
sigmask = stackgap_alloc(&sg, sizeof(sigset_t));
*sigmask = p->p_sigmask;
bsd.sigmask = sigmask;
return (sigsuspend(p, &bsd));
return (mprotect(p, (void *)uap));
}
int
linux_sigaltstack(p, uap)
linux_munmap(p, uap)
struct proc *p;
struct linux_sigaltstack_args *uap;
struct linux_munmap_args *uap;
{
struct sigaltstack_args bsd;
stack_t *ss, *oss;
linux_stack_t lss;
int error;
caddr_t sg = stackgap_init();
#ifdef DEBUG
printf("Linux-emul(%ld): munmap(%p, 0x%lx)\n",
(long)p->p_pid, (void *)uap->addr, uap->len);
#endif
return (munmap(p, (void *)uap));
}
/*
* linux/alpha has 2 mappings for this,
* This is here purely to shut the compiler up.
*/
int
linux_setpgid(p, uap)
struct proc *p;
struct linux_setpgid_args *uap;
{
return (setpgid(p, (void *)uap));
}
static unsigned int linux_to_bsd_resource[LINUX_RLIM_NLIMITS] =
{ RLIMIT_CPU, RLIMIT_FSIZE, RLIMIT_DATA, RLIMIT_STACK,
RLIMIT_CORE, RLIMIT_RSS, RLIMIT_NOFILE, -1,
RLIMIT_NPROC, RLIMIT_MEMLOCK
};
int dosetrlimit __P((struct proc *p, u_int which, struct rlimit *limp));
int
linux_setrlimit(p, uap)
struct proc *p;
struct linux_setrlimit_args *uap;
{
struct rlimit rlim;
u_int which;
int error;
#ifdef DEBUG
printf("Linux-emul(%ld): sigaltstack(%p, %p)\n",
(long)p->p_pid, uap->uss, uap->uoss);
printf("Linux-emul(%ld): setrlimit(%d, %p)\n",
(long)p->p_pid, uap->resource, (void *)uap->rlim);
#endif
error = copyin(uap->uss, &lss, sizeof(linux_stack_t));
if (error)
return (error);
if (uap->resource >= LINUX_RLIM_NLIMITS)
return EINVAL;
ss = stackgap_alloc(&sg, sizeof(stack_t));
ss->ss_sp = lss.ss_sp;
ss->ss_size = (lss.ss_size >= LINUX_MINSIGSTKSZ &&
lss.ss_size < MINSIGSTKSZ) ? MINSIGSTKSZ : lss.ss_size;
ss->ss_flags = lss.ss_flags;
which = linux_to_bsd_resource[uap->resource];
oss = (uap->uoss != NULL)
? stackgap_alloc(&sg, sizeof(stack_t))
: NULL;
if (which == -1)
return EINVAL;
if ((error =
copyin((caddr_t)uap->rlim, (caddr_t)&rlim, sizeof (struct rlimit))))
return (error);
return dosetrlimit(p, which, &rlim);
}
int
linux_getrlimit(p, uap)
struct proc *p;
struct linux_getrlimit_args *uap;
{
u_int which;
#ifdef DEBUG
printf("Linux-emul(%ld): getrlimit(%d, %p)\n",
(long)p->p_pid, uap->resource, (void *)uap->rlim);
#endif
if (uap->resource >= LINUX_RLIM_NLIMITS)
return EINVAL;
which = linux_to_bsd_resource[uap->resource];
if (which == -1)
return EINVAL;
return (copyout((caddr_t)&p->p_rlimit[which], (caddr_t)uap->rlim,
sizeof (struct rlimit)));
bsd.ss = ss;
bsd.oss = oss;
error = sigaltstack(p, &bsd);
if (!error && oss != NULL) {
lss.ss_sp = oss->ss_sp;
lss.ss_size = oss->ss_size;
lss.ss_flags = oss->ss_flags;
error = copyout(&lss, uap->uoss, sizeof(linux_stack_t));
}
return (error);
}