diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sh/lowlevel-atomic.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sh/lowlevel-atomic.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sh/lowlevel-atomic.h b/sysdeps/unix/sysv/linux/sh/lowlevel-atomic.h new file mode 100644 index 0000000000..d580ca3ce5 --- /dev/null +++ b/sysdeps/unix/sysv/linux/sh/lowlevel-atomic.h @@ -0,0 +1,80 @@ +/* Copyright (C) 2003-2014 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#ifdef __ASSEMBLER__ + +#define _IMP1 #1 +#define _IMM1 #-1 +#define _IMM4 #-4 +#define _IMM6 #-6 +#define _IMM8 #-8 + +#define INC(mem, reg) \ + .align 2; \ + mova 99f, r0; \ + mov r15, r1; \ + mov _IMM6, r15; \ +98: mov.l mem, reg; \ + add _IMP1, reg; \ + mov.l reg, mem; \ +99: mov r1, r15 + +#define DEC(mem, reg) \ + .align 2; \ + mova 99f, r0; \ + mov r15, r1; \ + mov _IMM6, r15; \ +98: mov.l mem, reg; \ + add _IMM1, reg; \ + mov.l reg, mem; \ +99: mov r1, r15 + +#define XADD(reg, mem, old, tmp) \ + .align 2; \ + mova 99f, r0; \ + nop; \ + mov r15, r1; \ + mov _IMM8, r15; \ +98: mov.l mem, old; \ + mov reg, tmp; \ + add old, tmp; \ + mov.l tmp, mem; \ +99: mov r1, r15 + +#define XCHG(reg, mem, old) \ + .align 2; \ + mova 99f, r0; \ + nop; \ + mov r15, r1; \ + mov _IMM4, r15; \ +98: mov.l mem, old; \ + mov.l reg, mem; \ +99: mov r1, r15 + +#define CMPXCHG(reg, mem, new, old) \ + .align 2; \ + mova 99f, r0; \ + nop; \ + mov r15, r1; \ + mov _IMM8, r15; \ +98: mov.l mem, old; \ + cmp/eq old, reg; \ + bf 99f; \ + mov.l new, mem; \ +99: mov r1, r15 + +#endif /* __ASSEMBLER__ */ |