778 lines
19 KiB
C
778 lines
19 KiB
C
/* linux/arch/sparc64/kernel/sys_sparc.c
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*
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* This file contains various random system calls that
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* have a non-standard calling sequence on the Linux/sparc
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* platform.
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*/
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/sched.h>
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#include <linux/fs.h>
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#include <linux/file.h>
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#include <linux/mm.h>
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#include <linux/sem.h>
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#include <linux/msg.h>
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#include <linux/shm.h>
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#include <linux/stat.h>
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#include <linux/mman.h>
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#include <linux/utsname.h>
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#include <linux/smp.h>
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#include <linux/slab.h>
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#include <linux/syscalls.h>
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#include <linux/ipc.h>
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#include <linux/personality.h>
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#include <linux/random.h>
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#include <linux/export.h>
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#include <asm/uaccess.h>
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#include <asm/utrap.h>
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#include <asm/unistd.h>
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#include "entry.h"
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#include "systbls.h"
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/* #define DEBUG_UNIMP_SYSCALL */
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asmlinkage unsigned long sys_getpagesize(void)
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{
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return PAGE_SIZE;
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}
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#define VA_EXCLUDE_START (0x0000080000000000UL - (1UL << 32UL))
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#define VA_EXCLUDE_END (0xfffff80000000000UL + (1UL << 32UL))
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/* Does addr --> addr+len fall within 4GB of the VA-space hole or
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* overflow past the end of the 64-bit address space?
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*/
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static inline int invalid_64bit_range(unsigned long addr, unsigned long len)
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{
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unsigned long va_exclude_start, va_exclude_end;
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va_exclude_start = VA_EXCLUDE_START;
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va_exclude_end = VA_EXCLUDE_END;
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if (unlikely(len >= va_exclude_start))
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return 1;
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if (unlikely((addr + len) < addr))
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return 1;
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if (unlikely((addr >= va_exclude_start && addr < va_exclude_end) ||
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((addr + len) >= va_exclude_start &&
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(addr + len) < va_exclude_end)))
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return 1;
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return 0;
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}
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/* Does start,end straddle the VA-space hole? */
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static inline int straddles_64bit_va_hole(unsigned long start, unsigned long end)
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{
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unsigned long va_exclude_start, va_exclude_end;
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va_exclude_start = VA_EXCLUDE_START;
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va_exclude_end = VA_EXCLUDE_END;
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if (likely(start < va_exclude_start && end < va_exclude_start))
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return 0;
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if (likely(start >= va_exclude_end && end >= va_exclude_end))
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return 0;
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return 1;
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}
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/* These functions differ from the default implementations in
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* mm/mmap.c in two ways:
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*
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* 1) For file backed MAP_SHARED mmap()'s we D-cache color align,
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* for fixed such mappings we just validate what the user gave us.
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* 2) For 64-bit tasks we avoid mapping anything within 4GB of
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* the spitfire/niagara VA-hole.
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*/
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static inline unsigned long COLOUR_ALIGN(unsigned long addr,
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unsigned long pgoff)
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{
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unsigned long base = (addr+SHMLBA-1)&~(SHMLBA-1);
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unsigned long off = (pgoff<<PAGE_SHIFT) & (SHMLBA-1);
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return base + off;
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}
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static inline unsigned long COLOUR_ALIGN_DOWN(unsigned long addr,
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unsigned long pgoff)
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{
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unsigned long base = addr & ~(SHMLBA-1);
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unsigned long off = (pgoff<<PAGE_SHIFT) & (SHMLBA-1);
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if (base + off <= addr)
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return base + off;
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return base - off;
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}
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unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags)
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{
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struct mm_struct *mm = current->mm;
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struct vm_area_struct * vma;
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unsigned long task_size = TASK_SIZE;
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unsigned long start_addr;
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int do_color_align;
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if (flags & MAP_FIXED) {
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/* We do not accept a shared mapping if it would violate
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* cache aliasing constraints.
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*/
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if ((flags & MAP_SHARED) &&
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((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
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return -EINVAL;
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return addr;
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}
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if (test_thread_flag(TIF_32BIT))
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task_size = STACK_TOP32;
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if (unlikely(len > task_size || len >= VA_EXCLUDE_START))
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return -ENOMEM;
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do_color_align = 0;
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if (filp || (flags & MAP_SHARED))
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do_color_align = 1;
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if (addr) {
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if (do_color_align)
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addr = COLOUR_ALIGN(addr, pgoff);
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else
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addr = PAGE_ALIGN(addr);
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vma = find_vma(mm, addr);
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if (task_size - len >= addr &&
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(!vma || addr + len <= vma->vm_start))
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return addr;
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}
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if (len > mm->cached_hole_size) {
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start_addr = addr = mm->free_area_cache;
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} else {
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start_addr = addr = TASK_UNMAPPED_BASE;
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mm->cached_hole_size = 0;
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}
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task_size -= len;
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full_search:
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if (do_color_align)
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addr = COLOUR_ALIGN(addr, pgoff);
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else
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addr = PAGE_ALIGN(addr);
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for (vma = find_vma(mm, addr); ; vma = vma->vm_next) {
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/* At this point: (!vma || addr < vma->vm_end). */
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if (addr < VA_EXCLUDE_START &&
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(addr + len) >= VA_EXCLUDE_START) {
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addr = VA_EXCLUDE_END;
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vma = find_vma(mm, VA_EXCLUDE_END);
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}
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if (unlikely(task_size < addr)) {
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if (start_addr != TASK_UNMAPPED_BASE) {
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start_addr = addr = TASK_UNMAPPED_BASE;
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mm->cached_hole_size = 0;
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goto full_search;
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}
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return -ENOMEM;
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}
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if (likely(!vma || addr + len <= vma->vm_start)) {
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/*
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* Remember the place where we stopped the search:
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*/
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mm->free_area_cache = addr + len;
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return addr;
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}
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if (addr + mm->cached_hole_size < vma->vm_start)
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mm->cached_hole_size = vma->vm_start - addr;
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addr = vma->vm_end;
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if (do_color_align)
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addr = COLOUR_ALIGN(addr, pgoff);
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}
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}
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unsigned long
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arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
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const unsigned long len, const unsigned long pgoff,
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const unsigned long flags)
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{
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struct vm_area_struct *vma;
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struct mm_struct *mm = current->mm;
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unsigned long task_size = STACK_TOP32;
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unsigned long addr = addr0;
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int do_color_align;
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/* This should only ever run for 32-bit processes. */
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BUG_ON(!test_thread_flag(TIF_32BIT));
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if (flags & MAP_FIXED) {
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/* We do not accept a shared mapping if it would violate
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* cache aliasing constraints.
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*/
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if ((flags & MAP_SHARED) &&
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((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
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return -EINVAL;
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return addr;
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}
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if (unlikely(len > task_size))
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return -ENOMEM;
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do_color_align = 0;
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if (filp || (flags & MAP_SHARED))
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do_color_align = 1;
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/* requesting a specific address */
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if (addr) {
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if (do_color_align)
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addr = COLOUR_ALIGN(addr, pgoff);
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else
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addr = PAGE_ALIGN(addr);
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vma = find_vma(mm, addr);
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if (task_size - len >= addr &&
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(!vma || addr + len <= vma->vm_start))
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return addr;
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}
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/* check if free_area_cache is useful for us */
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if (len <= mm->cached_hole_size) {
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mm->cached_hole_size = 0;
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mm->free_area_cache = mm->mmap_base;
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}
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/* either no address requested or can't fit in requested address hole */
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addr = mm->free_area_cache;
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if (do_color_align) {
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unsigned long base = COLOUR_ALIGN_DOWN(addr-len, pgoff);
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addr = base + len;
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}
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/* make sure it can fit in the remaining address space */
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if (likely(addr > len)) {
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vma = find_vma(mm, addr-len);
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if (!vma || addr <= vma->vm_start) {
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/* remember the address as a hint for next time */
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return (mm->free_area_cache = addr-len);
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}
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}
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if (unlikely(mm->mmap_base < len))
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goto bottomup;
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addr = mm->mmap_base-len;
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if (do_color_align)
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addr = COLOUR_ALIGN_DOWN(addr, pgoff);
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do {
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/*
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* Lookup failure means no vma is above this address,
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* else if new region fits below vma->vm_start,
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* return with success:
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*/
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vma = find_vma(mm, addr);
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if (likely(!vma || addr+len <= vma->vm_start)) {
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/* remember the address as a hint for next time */
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return (mm->free_area_cache = addr);
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}
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/* remember the largest hole we saw so far */
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if (addr + mm->cached_hole_size < vma->vm_start)
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mm->cached_hole_size = vma->vm_start - addr;
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/* try just below the current vma->vm_start */
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addr = vma->vm_start-len;
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if (do_color_align)
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addr = COLOUR_ALIGN_DOWN(addr, pgoff);
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} while (likely(len < vma->vm_start));
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bottomup:
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/*
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* A failed mmap() very likely causes application failure,
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* so fall back to the bottom-up function here. This scenario
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* can happen with large stack limits and large mmap()
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* allocations.
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*/
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mm->cached_hole_size = ~0UL;
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mm->free_area_cache = TASK_UNMAPPED_BASE;
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addr = arch_get_unmapped_area(filp, addr0, len, pgoff, flags);
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/*
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* Restore the topdown base:
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*/
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mm->free_area_cache = mm->mmap_base;
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mm->cached_hole_size = ~0UL;
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return addr;
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}
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/* Try to align mapping such that we align it as much as possible. */
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unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags)
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{
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unsigned long align_goal, addr = -ENOMEM;
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unsigned long (*get_area)(struct file *, unsigned long,
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unsigned long, unsigned long, unsigned long);
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get_area = current->mm->get_unmapped_area;
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if (flags & MAP_FIXED) {
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/* Ok, don't mess with it. */
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return get_area(NULL, orig_addr, len, pgoff, flags);
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}
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flags &= ~MAP_SHARED;
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align_goal = PAGE_SIZE;
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if (len >= (4UL * 1024 * 1024))
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align_goal = (4UL * 1024 * 1024);
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else if (len >= (512UL * 1024))
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align_goal = (512UL * 1024);
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else if (len >= (64UL * 1024))
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align_goal = (64UL * 1024);
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do {
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addr = get_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags);
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if (!(addr & ~PAGE_MASK)) {
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addr = (addr + (align_goal - 1UL)) & ~(align_goal - 1UL);
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break;
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}
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if (align_goal == (4UL * 1024 * 1024))
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align_goal = (512UL * 1024);
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else if (align_goal == (512UL * 1024))
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align_goal = (64UL * 1024);
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else
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align_goal = PAGE_SIZE;
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} while ((addr & ~PAGE_MASK) && align_goal > PAGE_SIZE);
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/* Mapping is smaller than 64K or larger areas could not
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* be obtained.
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*/
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if (addr & ~PAGE_MASK)
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addr = get_area(NULL, orig_addr, len, pgoff, flags);
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return addr;
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}
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EXPORT_SYMBOL(get_fb_unmapped_area);
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/* Essentially the same as PowerPC. */
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static unsigned long mmap_rnd(void)
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{
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unsigned long rnd = 0UL;
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if (current->flags & PF_RANDOMIZE) {
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unsigned long val = get_random_int();
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if (test_thread_flag(TIF_32BIT))
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rnd = (val % (1UL << (23UL-PAGE_SHIFT)));
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else
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rnd = (val % (1UL << (30UL-PAGE_SHIFT)));
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}
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return rnd << PAGE_SHIFT;
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}
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void arch_pick_mmap_layout(struct mm_struct *mm)
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{
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unsigned long random_factor = mmap_rnd();
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unsigned long gap;
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/*
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* Fall back to the standard layout if the personality
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* bit is set, or if the expected stack growth is unlimited:
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*/
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gap = rlimit(RLIMIT_STACK);
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if (!test_thread_flag(TIF_32BIT) ||
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(current->personality & ADDR_COMPAT_LAYOUT) ||
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gap == RLIM_INFINITY ||
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sysctl_legacy_va_layout) {
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mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
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mm->get_unmapped_area = arch_get_unmapped_area;
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mm->unmap_area = arch_unmap_area;
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} else {
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/* We know it's 32-bit */
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unsigned long task_size = STACK_TOP32;
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if (gap < 128 * 1024 * 1024)
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gap = 128 * 1024 * 1024;
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if (gap > (task_size / 6 * 5))
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gap = (task_size / 6 * 5);
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mm->mmap_base = PAGE_ALIGN(task_size - gap - random_factor);
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mm->get_unmapped_area = arch_get_unmapped_area_topdown;
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mm->unmap_area = arch_unmap_area_topdown;
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}
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}
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/*
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* sys_pipe() is the normal C calling standard for creating
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* a pipe. It's not the way unix traditionally does this, though.
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*/
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SYSCALL_DEFINE1(sparc_pipe_real, struct pt_regs *, regs)
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{
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int fd[2];
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int error;
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error = do_pipe_flags(fd, 0);
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if (error)
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goto out;
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regs->u_regs[UREG_I1] = fd[1];
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error = fd[0];
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out:
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return error;
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}
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/*
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* sys_ipc() is the de-multiplexer for the SysV IPC calls..
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*
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* This is really horribly ugly.
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*/
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SYSCALL_DEFINE6(sparc_ipc, unsigned int, call, int, first, unsigned long, second,
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unsigned long, third, void __user *, ptr, long, fifth)
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{
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long err;
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/* No need for backward compatibility. We can start fresh... */
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if (call <= SEMCTL) {
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switch (call) {
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case SEMOP:
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err = sys_semtimedop(first, ptr,
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(unsigned)second, NULL);
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goto out;
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case SEMTIMEDOP:
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err = sys_semtimedop(first, ptr, (unsigned)second,
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(const struct timespec __user *)
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(unsigned long) fifth);
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goto out;
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case SEMGET:
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err = sys_semget(first, (int)second, (int)third);
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goto out;
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case SEMCTL: {
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err = sys_semctl(first, second,
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(int)third | IPC_64,
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(union semun) ptr);
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goto out;
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}
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default:
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err = -ENOSYS;
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goto out;
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}
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}
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if (call <= MSGCTL) {
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switch (call) {
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case MSGSND:
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err = sys_msgsnd(first, ptr, (size_t)second,
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(int)third);
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goto out;
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case MSGRCV:
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err = sys_msgrcv(first, ptr, (size_t)second, fifth,
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(int)third);
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goto out;
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case MSGGET:
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err = sys_msgget((key_t)first, (int)second);
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goto out;
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case MSGCTL:
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err = sys_msgctl(first, (int)second | IPC_64, ptr);
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goto out;
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default:
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err = -ENOSYS;
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goto out;
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}
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}
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if (call <= SHMCTL) {
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switch (call) {
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case SHMAT: {
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ulong raddr;
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err = do_shmat(first, ptr, (int)second, &raddr);
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if (!err) {
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if (put_user(raddr,
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(ulong __user *) third))
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err = -EFAULT;
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}
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goto out;
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}
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case SHMDT:
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err = sys_shmdt(ptr);
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goto out;
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case SHMGET:
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err = sys_shmget(first, (size_t)second, (int)third);
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goto out;
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case SHMCTL:
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err = sys_shmctl(first, (int)second | IPC_64, ptr);
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goto out;
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default:
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err = -ENOSYS;
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goto out;
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}
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} else {
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err = -ENOSYS;
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}
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out:
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return err;
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}
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SYSCALL_DEFINE1(sparc64_personality, unsigned long, personality)
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{
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int ret;
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if (current->personality == PER_LINUX32 &&
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personality == PER_LINUX)
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personality = PER_LINUX32;
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ret = sys_personality(personality);
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if (ret == PER_LINUX32)
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ret = PER_LINUX;
|
|
|
|
return ret;
|
|
}
|
|
|
|
int sparc_mmap_check(unsigned long addr, unsigned long len)
|
|
{
|
|
if (test_thread_flag(TIF_32BIT)) {
|
|
if (len >= STACK_TOP32)
|
|
return -EINVAL;
|
|
|
|
if (addr > STACK_TOP32 - len)
|
|
return -EINVAL;
|
|
} else {
|
|
if (len >= VA_EXCLUDE_START)
|
|
return -EINVAL;
|
|
|
|
if (invalid_64bit_range(addr, len))
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Linux version of mmap */
|
|
SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len,
|
|
unsigned long, prot, unsigned long, flags, unsigned long, fd,
|
|
unsigned long, off)
|
|
{
|
|
unsigned long retval = -EINVAL;
|
|
|
|
if ((off + PAGE_ALIGN(len)) < off)
|
|
goto out;
|
|
if (off & ~PAGE_MASK)
|
|
goto out;
|
|
retval = sys_mmap_pgoff(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
|
|
out:
|
|
return retval;
|
|
}
|
|
|
|
SYSCALL_DEFINE2(64_munmap, unsigned long, addr, size_t, len)
|
|
{
|
|
if (invalid_64bit_range(addr, len))
|
|
return -EINVAL;
|
|
|
|
return vm_munmap(addr, len);
|
|
}
|
|
|
|
extern unsigned long do_mremap(unsigned long addr,
|
|
unsigned long old_len, unsigned long new_len,
|
|
unsigned long flags, unsigned long new_addr);
|
|
|
|
SYSCALL_DEFINE5(64_mremap, unsigned long, addr, unsigned long, old_len,
|
|
unsigned long, new_len, unsigned long, flags,
|
|
unsigned long, new_addr)
|
|
{
|
|
unsigned long ret = -EINVAL;
|
|
|
|
if (test_thread_flag(TIF_32BIT))
|
|
goto out;
|
|
|
|
down_write(¤t->mm->mmap_sem);
|
|
ret = do_mremap(addr, old_len, new_len, flags, new_addr);
|
|
up_write(¤t->mm->mmap_sem);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
/* we come to here via sys_nis_syscall so it can setup the regs argument */
|
|
asmlinkage unsigned long c_sys_nis_syscall(struct pt_regs *regs)
|
|
{
|
|
static int count;
|
|
|
|
/* Don't make the system unusable, if someone goes stuck */
|
|
if (count++ > 5)
|
|
return -ENOSYS;
|
|
|
|
printk ("Unimplemented SPARC system call %ld\n",regs->u_regs[1]);
|
|
#ifdef DEBUG_UNIMP_SYSCALL
|
|
show_regs (regs);
|
|
#endif
|
|
|
|
return -ENOSYS;
|
|
}
|
|
|
|
/* #define DEBUG_SPARC_BREAKPOINT */
|
|
|
|
asmlinkage void sparc_breakpoint(struct pt_regs *regs)
|
|
{
|
|
siginfo_t info;
|
|
|
|
if (test_thread_flag(TIF_32BIT)) {
|
|
regs->tpc &= 0xffffffff;
|
|
regs->tnpc &= 0xffffffff;
|
|
}
|
|
#ifdef DEBUG_SPARC_BREAKPOINT
|
|
printk ("TRAP: Entering kernel PC=%lx, nPC=%lx\n", regs->tpc, regs->tnpc);
|
|
#endif
|
|
info.si_signo = SIGTRAP;
|
|
info.si_errno = 0;
|
|
info.si_code = TRAP_BRKPT;
|
|
info.si_addr = (void __user *)regs->tpc;
|
|
info.si_trapno = 0;
|
|
force_sig_info(SIGTRAP, &info, current);
|
|
#ifdef DEBUG_SPARC_BREAKPOINT
|
|
printk ("TRAP: Returning to space: PC=%lx nPC=%lx\n", regs->tpc, regs->tnpc);
|
|
#endif
|
|
}
|
|
|
|
extern void check_pending(int signum);
|
|
|
|
SYSCALL_DEFINE2(getdomainname, char __user *, name, int, len)
|
|
{
|
|
int nlen, err;
|
|
|
|
if (len < 0)
|
|
return -EINVAL;
|
|
|
|
down_read(&uts_sem);
|
|
|
|
nlen = strlen(utsname()->domainname) + 1;
|
|
err = -EINVAL;
|
|
if (nlen > len)
|
|
goto out;
|
|
|
|
err = -EFAULT;
|
|
if (!copy_to_user(name, utsname()->domainname, nlen))
|
|
err = 0;
|
|
|
|
out:
|
|
up_read(&uts_sem);
|
|
return err;
|
|
}
|
|
|
|
SYSCALL_DEFINE5(utrap_install, utrap_entry_t, type,
|
|
utrap_handler_t, new_p, utrap_handler_t, new_d,
|
|
utrap_handler_t __user *, old_p,
|
|
utrap_handler_t __user *, old_d)
|
|
{
|
|
if (type < UT_INSTRUCTION_EXCEPTION || type > UT_TRAP_INSTRUCTION_31)
|
|
return -EINVAL;
|
|
if (new_p == (utrap_handler_t)(long)UTH_NOCHANGE) {
|
|
if (old_p) {
|
|
if (!current_thread_info()->utraps) {
|
|
if (put_user(NULL, old_p))
|
|
return -EFAULT;
|
|
} else {
|
|
if (put_user((utrap_handler_t)(current_thread_info()->utraps[type]), old_p))
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
if (old_d) {
|
|
if (put_user(NULL, old_d))
|
|
return -EFAULT;
|
|
}
|
|
return 0;
|
|
}
|
|
if (!current_thread_info()->utraps) {
|
|
current_thread_info()->utraps =
|
|
kzalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long), GFP_KERNEL);
|
|
if (!current_thread_info()->utraps)
|
|
return -ENOMEM;
|
|
current_thread_info()->utraps[0] = 1;
|
|
} else {
|
|
if ((utrap_handler_t)current_thread_info()->utraps[type] != new_p &&
|
|
current_thread_info()->utraps[0] > 1) {
|
|
unsigned long *p = current_thread_info()->utraps;
|
|
|
|
current_thread_info()->utraps =
|
|
kmalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long),
|
|
GFP_KERNEL);
|
|
if (!current_thread_info()->utraps) {
|
|
current_thread_info()->utraps = p;
|
|
return -ENOMEM;
|
|
}
|
|
p[0]--;
|
|
current_thread_info()->utraps[0] = 1;
|
|
memcpy(current_thread_info()->utraps+1, p+1,
|
|
UT_TRAP_INSTRUCTION_31*sizeof(long));
|
|
}
|
|
}
|
|
if (old_p) {
|
|
if (put_user((utrap_handler_t)(current_thread_info()->utraps[type]), old_p))
|
|
return -EFAULT;
|
|
}
|
|
if (old_d) {
|
|
if (put_user(NULL, old_d))
|
|
return -EFAULT;
|
|
}
|
|
current_thread_info()->utraps[type] = (long)new_p;
|
|
|
|
return 0;
|
|
}
|
|
|
|
asmlinkage long sparc_memory_ordering(unsigned long model,
|
|
struct pt_regs *regs)
|
|
{
|
|
if (model >= 3)
|
|
return -EINVAL;
|
|
regs->tstate = (regs->tstate & ~TSTATE_MM) | (model << 14);
|
|
return 0;
|
|
}
|
|
|
|
SYSCALL_DEFINE5(rt_sigaction, int, sig, const struct sigaction __user *, act,
|
|
struct sigaction __user *, oact, void __user *, restorer,
|
|
size_t, sigsetsize)
|
|
{
|
|
struct k_sigaction new_ka, old_ka;
|
|
int ret;
|
|
|
|
/* XXX: Don't preclude handling different sized sigset_t's. */
|
|
if (sigsetsize != sizeof(sigset_t))
|
|
return -EINVAL;
|
|
|
|
if (act) {
|
|
new_ka.ka_restorer = restorer;
|
|
if (copy_from_user(&new_ka.sa, act, sizeof(*act)))
|
|
return -EFAULT;
|
|
}
|
|
|
|
ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
|
|
|
|
if (!ret && oact) {
|
|
if (copy_to_user(oact, &old_ka.sa, sizeof(*oact)))
|
|
return -EFAULT;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Do a system call from kernel instead of calling sys_execve so we
|
|
* end up with proper pt_regs.
|
|
*/
|
|
int kernel_execve(const char *filename,
|
|
const char *const argv[],
|
|
const char *const envp[])
|
|
{
|
|
long __res;
|
|
register long __g1 __asm__ ("g1") = __NR_execve;
|
|
register long __o0 __asm__ ("o0") = (long)(filename);
|
|
register long __o1 __asm__ ("o1") = (long)(argv);
|
|
register long __o2 __asm__ ("o2") = (long)(envp);
|
|
asm volatile ("t 0x6d\n\t"
|
|
"sub %%g0, %%o0, %0\n\t"
|
|
"movcc %%xcc, %%o0, %0\n\t"
|
|
: "=r" (__res), "=&r" (__o0)
|
|
: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1)
|
|
: "cc");
|
|
return __res;
|
|
}
|