1  /* Assembler macros for SH.
       2     Copyright (C) 1999-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library; if not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <sysdeps/generic/sysdep.h>
      20  
      21  #ifdef	__ASSEMBLER__
      22  
      23  /* Syntactic details of assembler.  */
      24  
      25  #define ALIGNARG(log2) log2
      26  #define ASM_SIZE_DIRECTIVE(name) .size name,.-name
      27  
      28  #ifdef SHARED
      29  #define PLTJMP(_x)	_x##@PLT
      30  #else
      31  #define PLTJMP(_x)	_x
      32  #endif
      33  
      34  
      35  /* Define an entry point visible from C.  */
      36  #define	ENTRY(name)							      \
      37    .globl C_SYMBOL_NAME(name);						      \
      38    .type C_SYMBOL_NAME(name),@function;					      \
      39    .align ALIGNARG(5);							      \
      40    C_LABEL(name)								      \
      41    cfi_startproc;							      \
      42    CALL_MCOUNT
      43  
      44  #undef	END
      45  #define END(name)							      \
      46    cfi_endproc;								      \
      47    ASM_SIZE_DIRECTIVE(C_SYMBOL_NAME(name))
      48  
      49  /* If compiled for profiling, call `mcount' at the start of each function.  */
      50  #ifdef	PROF
      51  #define CALL_MCOUNT					\
      52  	mov.l	1f,r1;					\
      53  	sts.l	pr,@-r15;				\
      54  	cfi_adjust_cfa_offset (4);			\
      55  	cfi_rel_offset (pr, 0);				\
      56  	mova	2f,r0;					\
      57  	jmp	@r1;					\
      58  	 lds	r0,pr;					\
      59  	.align	2;					\
      60  1:	.long	mcount;					\
      61  2:	lds.l	@r15+,pr;				\
      62  	cfi_adjust_cfa_offset (-4);			\
      63  	cfi_restore (pr)
      64  
      65  #else
      66  #define CALL_MCOUNT		/* Do nothing.  */
      67  #endif
      68  
      69  /* Since C identifiers are not normally prefixed with an underscore
      70     on this system, the asm identifier `syscall_error' intrudes on the
      71     C name space.  Make sure we use an innocuous name.  */
      72  #define	syscall_error	__syscall_error
      73  #define mcount		_mcount
      74  
      75  #endif	/* __ASSEMBLER__ */