1  /* Copyright (C) 1997-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #ifndef _LINUX_SPARC32_SYSDEP_H
      19  #define _LINUX_SPARC32_SYSDEP_H 1
      20  
      21  #include <sysdeps/unix/sysv/linux/sparc/sysdep.h>
      22  
      23  #if IS_IN (rtld)
      24  # include <dl-sysdep.h>		/* Defines RTLD_PRIVATE_ERRNO.  */
      25  #endif
      26  #include <tls.h>
      27  
      28  #undef SYS_ify
      29  #define SYS_ify(syscall_name) __NR_##syscall_name
      30  
      31  #ifdef __ASSEMBLER__
      32  
      33  #define LOADSYSCALL(x) mov __NR_##x, %g1
      34  
      35  #undef PSEUDO
      36  #define PSEUDO(name, syscall_name, args)	\
      37  	.text;					\
      38  ENTRY(name);					\
      39  	LOADSYSCALL(syscall_name);		\
      40  	ta		0x10;			\
      41  	bcc		1f;			\
      42  	 nop;					\
      43  	SYSCALL_ERROR_HANDLER			\
      44  1:
      45  
      46  #undef PSEUDO_NOERRNO
      47  #define PSEUDO_NOERRNO(name, syscall_name, args)\
      48  	.text;					\
      49  ENTRY(name);					\
      50  	LOADSYSCALL(syscall_name);		\
      51  	ta		0x10;
      52  
      53  #undef PSEUDO_ERRVAL
      54  #define PSEUDO_ERRVAL(name, syscall_name, args)	\
      55  	.text;					\
      56  ENTRY(name);					\
      57  	LOADSYSCALL(syscall_name);		\
      58  	ta		0x10;
      59  
      60  #undef PSEUDO_END
      61  #define PSEUDO_END(name)			\
      62  	END(name)
      63  
      64  #ifndef PIC
      65  # define SYSCALL_ERROR_HANDLER			\
      66  	mov	%o7, %g1;			\
      67  	call	__syscall_error;		\
      68  	 mov	%g1, %o7;
      69  #else
      70  # if RTLD_PRIVATE_ERRNO
      71  #  define SYSCALL_ERROR_HANDLER			\
      72  0:	SETUP_PIC_REG_LEAF(o2,g1)		\
      73  	sethi	%gdop_hix22(rtld_errno), %g1;	\
      74  	xor	%g1, %gdop_lox10(rtld_errno), %g1;\
      75  	ld	[%o2 + %g1], %g1, %gdop(rtld_errno); \
      76  	st	%o0, [%g1];			\
      77  	jmp	%o7 + 8;			\
      78  	 mov	-1, %o0;
      79  # elif defined _LIBC_REENTRANT
      80  
      81  #  if IS_IN (libc)
      82  #   define SYSCALL_ERROR_ERRNO __libc_errno
      83  #  else
      84  #   define SYSCALL_ERROR_ERRNO errno
      85  #  endif
      86  #  define SYSCALL_ERROR_HANDLER					\
      87  0:	SETUP_PIC_REG_LEAF(o2,g1)				\
      88  	sethi	%tie_hi22(SYSCALL_ERROR_ERRNO), %g1;		\
      89  	add	%g1, %tie_lo10(SYSCALL_ERROR_ERRNO), %g1;	\
      90  	ld	[%o2 + %g1], %g1, %tie_ld(SYSCALL_ERROR_ERRNO);	\
      91  	st	%o0, [%g7 + %g1];				\
      92  	jmp	%o7 + 8;					\
      93  	 mov	-1, %o0;
      94  # else
      95  #  define SYSCALL_ERROR_HANDLER		\
      96  0:	SETUP_PIC_REG_LEAF(o2,g1)	\
      97  	sethi	%gdop_hix22(errno), %g1;\
      98  	xor	%g1, %gdop_lox10(errno), %g1;\
      99  	ld	[%o2 + %g1], %g1, %gdop(errno);\
     100  	st	%o0, [%g1];		\
     101  	jmp	%o7 + 8;		\
     102  	 mov	-1, %o0;
     103  # endif	/* _LIBC_REENTRANT */
     104  #endif	/* PIC */
     105  
     106  
     107  #else  /* __ASSEMBLER__ */
     108  
     109  #define __SYSCALL_STRING						\
     110  	"ta	0x10;"							\
     111  	"bcc	1f;"							\
     112  	" nop;"								\
     113  	"sub	%%g0, %%o0, %%o0;"					\
     114  	"1:"
     115  
     116  #define __SYSCALL_CLOBBERS						\
     117  	"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",			\
     118  	"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",		\
     119  	"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",		\
     120  	"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",		\
     121  	"cc", "memory"
     122  
     123  #undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
     124  #define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
     125  
     126  #endif	/* __ASSEMBLER__ */
     127  
     128  #endif /* linux/sparc/sysdep.h */