diff options
Diffstat (limited to 'sysdeps/csky/sysdep.h')
-rw-r--r-- | sysdeps/csky/sysdep.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/sysdeps/csky/sysdep.h b/sysdeps/csky/sysdep.h new file mode 100644 index 0000000000..526a7d3bca --- /dev/null +++ b/sysdeps/csky/sysdep.h @@ -0,0 +1,84 @@ +/* Assembler macros for C-SKY. + Copyright (C) 2018 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/>. */ + +#include <sysdeps/generic/sysdep.h> +#include <features.h> + +#ifdef __ASSEMBLER__ + +# define ASM_SIZE_DIRECTIVE(name) .size name,.-name + +/* Define an entry point visible from C. */ +# define ENTRY(name) \ + .globl name; \ + .type name,@function; \ + .align 4; \ + name##:; \ + cfi_startproc; \ + CALL_MCOUNT + +# undef END +# define END(name) \ + cfi_endproc; \ + ASM_SIZE_DIRECTIVE(name) + +/* If compiled for profiling, call `mcount' at the start of each function. */ +# ifdef PROF +# ifdef __PIC__ +# define CALL_MCOUNT \ + subi sp, 4; \ + stw lr, (sp, 0); \ + grs t0, .Lgetpc; \ +.Lgetpc: \ + lrw gb, .Lgetpc@GOTPC; \ + addu gb, t0; \ + lrw t1, _mcount@PLT; \ + ldr.w t0, (gb, t1 << 0); \ + jmp t0; +# else +# define CALL_MCOUNT \ + subi sp, 4; \ + stw lr, (sp, 0); \ + jbsr _mcount; +# endif +# else +# define CALL_MCOUNT /* Do nothing. */ +# endif + +# if defined (__CK860__) +/* Instruction fetch will be faster when the label is 16 bytes aligned. + Filling with nop instruction to avoid extra jump. */ +# define LABLE_ALIGN \ + .balignw 16, 0x6c03 + +# define PRE_BNEZAD(R) + +# define BNEZAD(R, L) \ + bnezad R, L +# else +# define LABLE_ALIGN \ + .balignw 8, 0x6c03 + +# define PRE_BNEZAD(R) \ + subi R, 1 + +# define BNEZAD(R, L) \ + bnez R, L +# endif + +#endif |