1 /* $Id: sys_sparc.c,v 1.57 2002/02/09 19:49:30 davem Exp $
2 * linux/arch/sparc64/kernel/sys_sparc.c
4 * This file contains various random system calls that
5 * have a non-standard calling sequence on the Linux/sparc
9 #include <linux/errno.h>
10 #include <linux/types.h>
11 #include <linux/sched.h>
13 #include <linux/file.h>
15 #include <linux/sem.h>
16 #include <linux/msg.h>
17 #include <linux/shm.h>
18 #include <linux/stat.h>
19 #include <linux/mman.h>
20 #include <linux/utsname.h>
21 #include <linux/smp.h>
22 #include <linux/slab.h>
23 #include <linux/syscalls.h>
24 #include <linux/ipc.h>
25 #include <linux/personality.h>
26 #include <linux/random.h>
28 #include <asm/uaccess.h>
29 #include <asm/utrap.h>
30 #include <asm/perfctr.h>
31 #include <asm/unistd.h>
33 /* #define DEBUG_UNIMP_SYSCALL */
35 asmlinkage unsigned long sys_getpagesize(void)
40 #define VA_EXCLUDE_START (0x0000080000000000UL - (1UL << 32UL))
41 #define VA_EXCLUDE_END (0xfffff80000000000UL + (1UL << 32UL))
43 /* Does addr --> addr+len fall within 4GB of the VA-space hole or
44 * overflow past the end of the 64-bit address space?
46 static inline int invalid_64bit_range(unsigned long addr, unsigned long len)
48 unsigned long va_exclude_start, va_exclude_end;
50 va_exclude_start = VA_EXCLUDE_START;
51 va_exclude_end = VA_EXCLUDE_END;
53 if (unlikely(len >= va_exclude_start))
56 if (unlikely((addr + len) < addr))
59 if (unlikely((addr >= va_exclude_start && addr < va_exclude_end) ||
60 ((addr + len) >= va_exclude_start &&
61 (addr + len) < va_exclude_end)))
67 /* Does start,end straddle the VA-space hole? */
68 static inline int straddles_64bit_va_hole(unsigned long start, unsigned long end)
70 unsigned long va_exclude_start, va_exclude_end;
72 va_exclude_start = VA_EXCLUDE_START;
73 va_exclude_end = VA_EXCLUDE_END;
75 if (likely(start < va_exclude_start && end < va_exclude_start))
78 if (likely(start >= va_exclude_end && end >= va_exclude_end))
84 /* These functions differ from the default implementations in
85 * mm/mmap.c in two ways:
87 * 1) For file backed MAP_SHARED mmap()'s we D-cache color align,
88 * for fixed such mappings we just validate what the user gave us.
89 * 2) For 64-bit tasks we avoid mapping anything within 4GB of
90 * the spitfire/niagara VA-hole.
93 static inline unsigned long COLOUR_ALIGN(unsigned long addr,
96 unsigned long base = (addr+SHMLBA-1)&~(SHMLBA-1);
97 unsigned long off = (pgoff<<PAGE_SHIFT) & (SHMLBA-1);
102 static inline unsigned long COLOUR_ALIGN_DOWN(unsigned long addr,
105 unsigned long base = addr & ~(SHMLBA-1);
106 unsigned long off = (pgoff<<PAGE_SHIFT) & (SHMLBA-1);
108 if (base + off <= addr)
113 unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags)
115 struct mm_struct *mm = current->mm;
116 struct vm_area_struct * vma;
117 unsigned long task_size = TASK_SIZE;
118 unsigned long start_addr;
121 if (flags & MAP_FIXED) {
122 /* We do not accept a shared mapping if it would violate
123 * cache aliasing constraints.
125 if ((flags & MAP_SHARED) &&
126 ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
131 if (test_thread_flag(TIF_32BIT))
132 task_size = STACK_TOP32;
133 if (unlikely(len > task_size || len >= VA_EXCLUDE_START))
137 if (filp || (flags & MAP_SHARED))
142 addr = COLOUR_ALIGN(addr, pgoff);
144 addr = PAGE_ALIGN(addr);
146 vma = find_vma(mm, addr);
147 if (task_size - len >= addr &&
148 (!vma || addr + len <= vma->vm_start))
152 if (len > mm->cached_hole_size) {
153 start_addr = addr = mm->free_area_cache;
155 start_addr = addr = TASK_UNMAPPED_BASE;
156 mm->cached_hole_size = 0;
163 addr = COLOUR_ALIGN(addr, pgoff);
165 addr = PAGE_ALIGN(addr);
167 for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
168 /* At this point: (!vma || addr < vma->vm_end). */
169 if (addr < VA_EXCLUDE_START &&
170 (addr + len) >= VA_EXCLUDE_START) {
171 addr = VA_EXCLUDE_END;
172 vma = find_vma(mm, VA_EXCLUDE_END);
174 if (unlikely(task_size < addr)) {
175 if (start_addr != TASK_UNMAPPED_BASE) {
176 start_addr = addr = TASK_UNMAPPED_BASE;
177 mm->cached_hole_size = 0;
182 if (likely(!vma || addr + len <= vma->vm_start)) {
184 * Remember the place where we stopped the search:
186 mm->free_area_cache = addr + len;
189 if (addr + mm->cached_hole_size < vma->vm_start)
190 mm->cached_hole_size = vma->vm_start - addr;
194 addr = COLOUR_ALIGN(addr, pgoff);
199 arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
200 const unsigned long len, const unsigned long pgoff,
201 const unsigned long flags)
203 struct vm_area_struct *vma;
204 struct mm_struct *mm = current->mm;
205 unsigned long task_size = STACK_TOP32;
206 unsigned long addr = addr0;
209 /* This should only ever run for 32-bit processes. */
210 BUG_ON(!test_thread_flag(TIF_32BIT));
212 if (flags & MAP_FIXED) {
213 /* We do not accept a shared mapping if it would violate
214 * cache aliasing constraints.
216 if ((flags & MAP_SHARED) &&
217 ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
222 if (unlikely(len > task_size))
226 if (filp || (flags & MAP_SHARED))
229 /* requesting a specific address */
232 addr = COLOUR_ALIGN(addr, pgoff);
234 addr = PAGE_ALIGN(addr);
236 vma = find_vma(mm, addr);
237 if (task_size - len >= addr &&
238 (!vma || addr + len <= vma->vm_start))
242 /* check if free_area_cache is useful for us */
243 if (len <= mm->cached_hole_size) {
244 mm->cached_hole_size = 0;
245 mm->free_area_cache = mm->mmap_base;
248 /* either no address requested or can't fit in requested address hole */
249 addr = mm->free_area_cache;
250 if (do_color_align) {
251 unsigned long base = COLOUR_ALIGN_DOWN(addr-len, pgoff);
256 /* make sure it can fit in the remaining address space */
257 if (likely(addr > len)) {
258 vma = find_vma(mm, addr-len);
259 if (!vma || addr <= vma->vm_start) {
260 /* remember the address as a hint for next time */
261 return (mm->free_area_cache = addr-len);
265 if (unlikely(mm->mmap_base < len))
268 addr = mm->mmap_base-len;
270 addr = COLOUR_ALIGN_DOWN(addr, pgoff);
274 * Lookup failure means no vma is above this address,
275 * else if new region fits below vma->vm_start,
276 * return with success:
278 vma = find_vma(mm, addr);
279 if (likely(!vma || addr+len <= vma->vm_start)) {
280 /* remember the address as a hint for next time */
281 return (mm->free_area_cache = addr);
284 /* remember the largest hole we saw so far */
285 if (addr + mm->cached_hole_size < vma->vm_start)
286 mm->cached_hole_size = vma->vm_start - addr;
288 /* try just below the current vma->vm_start */
289 addr = vma->vm_start-len;
291 addr = COLOUR_ALIGN_DOWN(addr, pgoff);
292 } while (likely(len < vma->vm_start));
296 * A failed mmap() very likely causes application failure,
297 * so fall back to the bottom-up function here. This scenario
298 * can happen with large stack limits and large mmap()
301 mm->cached_hole_size = ~0UL;
302 mm->free_area_cache = TASK_UNMAPPED_BASE;
303 addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags);
305 * Restore the topdown base:
307 mm->free_area_cache = mm->mmap_base;
308 mm->cached_hole_size = ~0UL;
313 /* Try to align mapping such that we align it as much as possible. */
314 unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags)
316 unsigned long align_goal, addr = -ENOMEM;
318 if (flags & MAP_FIXED) {
319 /* Ok, don't mess with it. */
320 return get_unmapped_area(NULL, orig_addr, len, pgoff, flags);
322 flags &= ~MAP_SHARED;
324 align_goal = PAGE_SIZE;
325 if (len >= (4UL * 1024 * 1024))
326 align_goal = (4UL * 1024 * 1024);
327 else if (len >= (512UL * 1024))
328 align_goal = (512UL * 1024);
329 else if (len >= (64UL * 1024))
330 align_goal = (64UL * 1024);
333 addr = get_unmapped_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags);
334 if (!(addr & ~PAGE_MASK)) {
335 addr = (addr + (align_goal - 1UL)) & ~(align_goal - 1UL);
339 if (align_goal == (4UL * 1024 * 1024))
340 align_goal = (512UL * 1024);
341 else if (align_goal == (512UL * 1024))
342 align_goal = (64UL * 1024);
344 align_goal = PAGE_SIZE;
345 } while ((addr & ~PAGE_MASK) && align_goal > PAGE_SIZE);
347 /* Mapping is smaller than 64K or larger areas could not
350 if (addr & ~PAGE_MASK)
351 addr = get_unmapped_area(NULL, orig_addr, len, pgoff, flags);
356 /* Essentially the same as PowerPC... */
357 void arch_pick_mmap_layout(struct mm_struct *mm)
359 unsigned long random_factor = 0UL;
361 if (current->flags & PF_RANDOMIZE) {
362 random_factor = get_random_int();
363 if (test_thread_flag(TIF_32BIT))
364 random_factor &= ((1 * 1024 * 1024) - 1);
366 random_factor = ((random_factor << PAGE_SHIFT) &
371 * Fall back to the standard layout if the personality
372 * bit is set, or if the expected stack growth is unlimited:
374 if (!test_thread_flag(TIF_32BIT) ||
375 (current->personality & ADDR_COMPAT_LAYOUT) ||
376 current->signal->rlim[RLIMIT_STACK].rlim_cur == RLIM_INFINITY ||
377 sysctl_legacy_va_layout) {
378 mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
379 mm->get_unmapped_area = arch_get_unmapped_area;
380 mm->unmap_area = arch_unmap_area;
382 /* We know it's 32-bit */
383 unsigned long task_size = STACK_TOP32;
386 gap = current->signal->rlim[RLIMIT_STACK].rlim_cur;
387 if (gap < 128 * 1024 * 1024)
388 gap = 128 * 1024 * 1024;
389 if (gap > (task_size / 6 * 5))
390 gap = (task_size / 6 * 5);
392 mm->mmap_base = PAGE_ALIGN(task_size - gap - random_factor);
393 mm->get_unmapped_area = arch_get_unmapped_area_topdown;
394 mm->unmap_area = arch_unmap_area_topdown;
398 asmlinkage unsigned long sparc_brk(unsigned long brk)
400 /* People could try to be nasty and use ta 0x6d in 32bit programs */
401 if (test_thread_flag(TIF_32BIT) && brk >= STACK_TOP32)
402 return current->mm->brk;
404 if (unlikely(straddles_64bit_va_hole(current->mm->brk, brk)))
405 return current->mm->brk;
411 * sys_pipe() is the normal C calling standard for creating
412 * a pipe. It's not the way unix traditionally does this, though.
414 asmlinkage long sparc_pipe(struct pt_regs *regs)
422 regs->u_regs[UREG_I1] = fd[1];
429 * sys_ipc() is the de-multiplexer for the SysV IPC calls..
431 * This is really horribly ugly.
434 asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second,
435 unsigned long third, void __user *ptr, long fifth)
439 /* No need for backward compatibility. We can start fresh... */
440 if (call <= SEMCTL) {
443 err = sys_semtimedop(first, ptr,
444 (unsigned)second, NULL);
447 err = sys_semtimedop(first, ptr, (unsigned)second,
448 (const struct timespec __user *) fifth);
451 err = sys_semget(first, (int)second, (int)third);
454 err = sys_semctl(first, third,
455 (int)second | IPC_64,
464 if (call <= MSGCTL) {
467 err = sys_msgsnd(first, ptr, (size_t)second,
471 err = sys_msgrcv(first, ptr, (size_t)second, fifth,
475 err = sys_msgget((key_t)first, (int)second);
478 err = sys_msgctl(first, (int)second | IPC_64, ptr);
485 if (call <= SHMCTL) {
489 err = do_shmat(first, ptr, (int)second, &raddr);
492 (ulong __user *) third))
498 err = sys_shmdt(ptr);
501 err = sys_shmget(first, (size_t)second, (int)third);
504 err = sys_shmctl(first, (int)second | IPC_64, ptr);
517 asmlinkage long sparc64_newuname(struct new_utsname __user *name)
519 int ret = sys_newuname(name);
521 if (current->personality == PER_LINUX32 && !ret) {
522 ret = (copy_to_user(name->machine, "sparc\0\0", 8)
528 asmlinkage long sparc64_personality(unsigned long personality)
532 if (current->personality == PER_LINUX32 &&
533 personality == PER_LINUX)
534 personality = PER_LINUX32;
535 ret = sys_personality(personality);
536 if (ret == PER_LINUX32)
542 int sparc64_mmap_check(unsigned long addr, unsigned long len,
545 if (test_thread_flag(TIF_32BIT)) {
546 if (len >= STACK_TOP32)
549 if ((flags & MAP_FIXED) && addr > STACK_TOP32 - len)
552 if (len >= VA_EXCLUDE_START)
555 if ((flags & MAP_FIXED) && invalid_64bit_range(addr, len))
562 /* Linux version of mmap */
563 asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
564 unsigned long prot, unsigned long flags, unsigned long fd,
567 struct file * file = NULL;
568 unsigned long retval = -EBADF;
570 if (!(flags & MAP_ANONYMOUS)) {
575 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
576 len = PAGE_ALIGN(len);
578 down_write(¤t->mm->mmap_sem);
579 retval = do_mmap(file, addr, len, prot, flags, off);
580 up_write(¤t->mm->mmap_sem);
588 asmlinkage long sys64_munmap(unsigned long addr, size_t len)
592 if (invalid_64bit_range(addr, len))
595 down_write(¤t->mm->mmap_sem);
596 ret = do_munmap(current->mm, addr, len);
597 up_write(¤t->mm->mmap_sem);
601 extern unsigned long do_mremap(unsigned long addr,
602 unsigned long old_len, unsigned long new_len,
603 unsigned long flags, unsigned long new_addr);
605 asmlinkage unsigned long sys64_mremap(unsigned long addr,
606 unsigned long old_len, unsigned long new_len,
607 unsigned long flags, unsigned long new_addr)
609 struct vm_area_struct *vma;
610 unsigned long ret = -EINVAL;
612 if (test_thread_flag(TIF_32BIT))
614 if (unlikely(new_len >= VA_EXCLUDE_START))
616 if (unlikely(invalid_64bit_range(addr, old_len)))
619 down_write(¤t->mm->mmap_sem);
620 if (flags & MREMAP_FIXED) {
621 if (invalid_64bit_range(new_addr, new_len))
623 } else if (invalid_64bit_range(addr, new_len)) {
624 unsigned long map_flags = 0;
625 struct file *file = NULL;
628 if (!(flags & MREMAP_MAYMOVE))
631 vma = find_vma(current->mm, addr);
633 if (vma->vm_flags & VM_SHARED)
634 map_flags |= MAP_SHARED;
638 /* MREMAP_FIXED checked above. */
639 new_addr = get_unmapped_area(file, addr, new_len,
640 vma ? vma->vm_pgoff : 0,
643 if (new_addr & ~PAGE_MASK)
645 flags |= MREMAP_FIXED;
647 ret = do_mremap(addr, old_len, new_len, flags, new_addr);
649 up_write(¤t->mm->mmap_sem);
654 /* we come to here via sys_nis_syscall so it can setup the regs argument */
655 asmlinkage unsigned long c_sys_nis_syscall(struct pt_regs *regs)
659 /* Don't make the system unusable, if someone goes stuck */
663 printk ("Unimplemented SPARC system call %ld\n",regs->u_regs[1]);
664 #ifdef DEBUG_UNIMP_SYSCALL
671 /* #define DEBUG_SPARC_BREAKPOINT */
673 asmlinkage void sparc_breakpoint(struct pt_regs *regs)
677 if (test_thread_flag(TIF_32BIT)) {
678 regs->tpc &= 0xffffffff;
679 regs->tnpc &= 0xffffffff;
681 #ifdef DEBUG_SPARC_BREAKPOINT
682 printk ("TRAP: Entering kernel PC=%lx, nPC=%lx\n", regs->tpc, regs->tnpc);
684 info.si_signo = SIGTRAP;
686 info.si_code = TRAP_BRKPT;
687 info.si_addr = (void __user *)regs->tpc;
689 force_sig_info(SIGTRAP, &info, current);
690 #ifdef DEBUG_SPARC_BREAKPOINT
691 printk ("TRAP: Returning to space: PC=%lx nPC=%lx\n", regs->tpc, regs->tnpc);
695 extern void check_pending(int signum);
697 asmlinkage long sys_getdomainname(char __user *name, int len)
706 nlen = strlen(utsname()->domainname) + 1;
712 if (!copy_to_user(name, utsname()->domainname, nlen))
720 asmlinkage long solaris_syscall(struct pt_regs *regs)
724 regs->tpc = regs->tnpc;
726 if (test_thread_flag(TIF_32BIT)) {
727 regs->tpc &= 0xffffffff;
728 regs->tnpc &= 0xffffffff;
731 printk ("For Solaris binary emulation you need solaris module loaded\n");
734 send_sig(SIGSEGV, current, 1);
739 #ifndef CONFIG_SUNOS_EMUL
740 asmlinkage long sunos_syscall(struct pt_regs *regs)
744 regs->tpc = regs->tnpc;
746 if (test_thread_flag(TIF_32BIT)) {
747 regs->tpc &= 0xffffffff;
748 regs->tnpc &= 0xffffffff;
751 printk ("SunOS binary emulation not compiled in\n");
752 force_sig(SIGSEGV, current);
758 asmlinkage long sys_utrap_install(utrap_entry_t type,
759 utrap_handler_t new_p,
760 utrap_handler_t new_d,
761 utrap_handler_t __user *old_p,
762 utrap_handler_t __user *old_d)
764 if (type < UT_INSTRUCTION_EXCEPTION || type > UT_TRAP_INSTRUCTION_31)
766 if (new_p == (utrap_handler_t)(long)UTH_NOCHANGE) {
768 if (!current_thread_info()->utraps) {
769 if (put_user(NULL, old_p))
772 if (put_user((utrap_handler_t)(current_thread_info()->utraps[type]), old_p))
777 if (put_user(NULL, old_d))
782 if (!current_thread_info()->utraps) {
783 current_thread_info()->utraps =
784 kzalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long), GFP_KERNEL);
785 if (!current_thread_info()->utraps)
787 current_thread_info()->utraps[0] = 1;
789 if ((utrap_handler_t)current_thread_info()->utraps[type] != new_p &&
790 current_thread_info()->utraps[0] > 1) {
791 long *p = current_thread_info()->utraps;
793 current_thread_info()->utraps =
794 kmalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long),
796 if (!current_thread_info()->utraps) {
797 current_thread_info()->utraps = p;
801 current_thread_info()->utraps[0] = 1;
802 memcpy(current_thread_info()->utraps+1, p+1,
803 UT_TRAP_INSTRUCTION_31*sizeof(long));
807 if (put_user((utrap_handler_t)(current_thread_info()->utraps[type]), old_p))
811 if (put_user(NULL, old_d))
814 current_thread_info()->utraps[type] = (long)new_p;
819 long sparc_memory_ordering(unsigned long model, struct pt_regs *regs)
823 regs->tstate = (regs->tstate & ~TSTATE_MM) | (model << 14);
827 asmlinkage long sys_rt_sigaction(int sig,
828 const struct sigaction __user *act,
829 struct sigaction __user *oact,
830 void __user *restorer,
833 struct k_sigaction new_ka, old_ka;
836 /* XXX: Don't preclude handling different sized sigset_t's. */
837 if (sigsetsize != sizeof(sigset_t))
841 new_ka.ka_restorer = restorer;
842 if (copy_from_user(&new_ka.sa, act, sizeof(*act)))
846 ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
849 if (copy_to_user(oact, &old_ka.sa, sizeof(*oact)))
856 /* Invoked by rtrap code to update performance counters in
859 asmlinkage void update_perfctrs(void)
861 unsigned long pic, tmp;
864 tmp = (current_thread_info()->kernel_cntd0 += (unsigned int)pic);
865 __put_user(tmp, current_thread_info()->user_cntd0);
866 tmp = (current_thread_info()->kernel_cntd1 += (pic >> 32));
867 __put_user(tmp, current_thread_info()->user_cntd1);
871 asmlinkage long sys_perfctr(int opcode, unsigned long arg0, unsigned long arg1, unsigned long arg2)
877 current_thread_info()->pcr_reg = arg2;
878 current_thread_info()->user_cntd0 = (u64 __user *) arg0;
879 current_thread_info()->user_cntd1 = (u64 __user *) arg1;
880 current_thread_info()->kernel_cntd0 =
881 current_thread_info()->kernel_cntd1 = 0;
884 set_thread_flag(TIF_PERFCTR);
889 if (test_thread_flag(TIF_PERFCTR)) {
890 current_thread_info()->user_cntd0 =
891 current_thread_info()->user_cntd1 = NULL;
892 current_thread_info()->pcr_reg = 0;
894 clear_thread_flag(TIF_PERFCTR);
900 unsigned long pic, tmp;
902 if (!test_thread_flag(TIF_PERFCTR)) {
907 tmp = (current_thread_info()->kernel_cntd0 += (unsigned int)pic);
908 err |= __put_user(tmp, current_thread_info()->user_cntd0);
909 tmp = (current_thread_info()->kernel_cntd1 += (pic >> 32));
910 err |= __put_user(tmp, current_thread_info()->user_cntd1);
916 if (!test_thread_flag(TIF_PERFCTR)) {
920 current_thread_info()->kernel_cntd0 =
921 current_thread_info()->kernel_cntd1 = 0;
925 case PERFCTR_SETPCR: {
926 u64 __user *user_pcr = (u64 __user *)arg0;
928 if (!test_thread_flag(TIF_PERFCTR)) {
932 err |= __get_user(current_thread_info()->pcr_reg, user_pcr);
933 write_pcr(current_thread_info()->pcr_reg);
934 current_thread_info()->kernel_cntd0 =
935 current_thread_info()->kernel_cntd1 = 0;
940 case PERFCTR_GETPCR: {
941 u64 __user *user_pcr = (u64 __user *)arg0;
943 if (!test_thread_flag(TIF_PERFCTR)) {
947 err |= __put_user(current_thread_info()->pcr_reg, user_pcr);
959 * Do a system call from kernel instead of calling sys_execve so we
960 * end up with proper pt_regs.
962 int kernel_execve(const char *filename, char *const argv[], char *const envp[])
965 register long __g1 __asm__ ("g1") = __NR_execve;
966 register long __o0 __asm__ ("o0") = (long)(filename);
967 register long __o1 __asm__ ("o1") = (long)(argv);
968 register long __o2 __asm__ ("o2") = (long)(envp);
969 asm volatile ("t 0x6d\n\t"
970 "sub %%g0, %%o0, %0\n\t"
971 "movcc %%xcc, %%o0, %0\n\t"
972 : "=r" (__res), "=&r" (__o0)
973 : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1)