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-/* Copyright (C) 1999, 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
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- This file is part of the GNU C Library.
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- Written by Jes Sorensen, <Jes.Sorensen@cern.ch>, April 1999.
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- Based on code originally written by David Mosberger-Tang
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-
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- The GNU C Library is free software; you can redistribute it and/or
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- modify it under the terms of the GNU Lesser General Public
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- License as published by the Free Software Foundation; either
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- version 2.1 of the License, or (at your option) any later version.
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-
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- The GNU C Library is distributed in the hope that it will be useful,
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- but WITHOUT ANY WARRANTY; without even the implied warranty of
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- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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- Lesser General Public License for more details.
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-
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- You should have received a copy of the GNU Lesser General Public
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- License along with the GNU C Library; if not, write to the Free
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- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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- 02111-1307 USA. */
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-
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-#ifndef _LINUX_IA64_SYSDEP_H
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-#define _LINUX_IA64_SYSDEP_H 1
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-
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-#include <features.h>
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-#include <asm/unistd.h>
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-
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-#ifdef __ASSEMBLER__
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-
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-/* Macros to help writing .prologue directives in assembly code. */
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-#define ASM_UNW_PRLG_RP 0x8
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-#define ASM_UNW_PRLG_PFS 0x4
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-#define ASM_UNW_PRLG_PSP 0x2
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-#define ASM_UNW_PRLG_PR 0x1
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-#define ASM_UNW_PRLG_GRSAVE(ninputs) (32+(ninputs))
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-
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-#ifdef __STDC__
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-#define C_LABEL(name) name :
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-#else
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-#define C_LABEL(name) name/**/:
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-#endif
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-
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-#define CALL_MCOUNT
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-
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-#define ENTRY(name) \
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- .text; \
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- .align 32; \
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- .proc C_SYMBOL_NAME(name); \
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- .global C_SYMBOL_NAME(name); \
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- C_LABEL(name) \
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- CALL_MCOUNT
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-
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-#define LEAF(name) \
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- .text; \
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- .align 32; \
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- .proc C_SYMBOL_NAME(name); \
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- .global name; \
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- C_LABEL(name)
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-
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-/* Mark the end of function SYM. */
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-#undef END
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-#define END(sym) .endp C_SYMBOL_NAME(sym)
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-
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-/* For Linux we can use the system call table in the header file
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- /usr/include/asm/unistd.h
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- of the kernel. But these symbols do not follow the SYS_* syntax
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- so we have to redefine the `SYS_ify' macro here. */
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-#undef SYS_ify
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-#ifdef __STDC__
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-# define SYS_ify(syscall_name) __NR_##syscall_name
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-#else
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-# define SYS_ify(syscall_name) __NR_/**/syscall_name
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-#endif
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-
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-/* Linux uses a negative return value to indicate syscall errors, unlike
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- most Unices, which use the condition codes' carry flag.
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-
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- Since version 2.1 the return value of a system call might be negative
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- even if the call succeeded. E.g., the `lseek' system call might return
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- a large offset. Therefore we must not anymore test for < 0, but test
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- for a real error by making sure the value in %d0 is a real error
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- number. Linus said he will make sure the no syscall returns a value
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- in -1 .. -4095 as a valid result so we can savely test with -4095. */
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-
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-/* We don't want the label for the error handler to be visible in the symbol
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- table when we define it here. */
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-#define SYSCALL_ERROR_LABEL __syscall_error
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-
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-#undef PSEUDO
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-#define PSEUDO(name, syscall_name, args) \
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- ENTRY(name) \
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- DO_CALL (SYS_ify(syscall_name)); \
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- cmp.eq p6,p0=-1,r10; \
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-(p6) br.cond.spnt.few __syscall_error;
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-
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-#define DO_CALL_VIA_BREAK(num) \
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- mov r15=num; \
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- break __BREAK_SYSCALL
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-
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-#ifdef IA64_USE_NEW_STUB
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-# ifdef SHARED
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-# define DO_CALL(num) \
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- .prologue; \
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- adds r2 = SYSINFO_OFFSET, r13;; \
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- ld8 r2 = [r2]; \
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- .save ar.pfs, r11; \
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- mov r11 = ar.pfs;; \
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- .body; \
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- mov r15 = num; \
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- mov b7 = r2; \
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- br.call.sptk.many b6 = b7;; \
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- .restore sp; \
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- mov ar.pfs = r11; \
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- .prologue; \
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- .body
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-# else /* !SHARED */
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-# define DO_CALL(num) \
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- .prologue; \
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- mov r15 = num; \
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- movl r2 = _dl_sysinfo;; \
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- ld8 r2 = [r2]; \
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- .save ar.pfs, r11; \
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- mov r11 = ar.pfs;; \
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- .body; \
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- mov b7 = r2; \
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- br.call.sptk.many b6 = b7;; \
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- .restore sp; \
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- mov ar.pfs = r11; \
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- .prologue; \
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- .body
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-# endif
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-#else
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-# define DO_CALL(num) DO_CALL_VIA_BREAK(num)
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-#endif
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-
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-#undef PSEUDO_END
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-#define PSEUDO_END(name) .endp C_SYMBOL_NAME(name);
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-
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-#undef PSEUDO_NOERRNO
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-#define PSEUDO_NOERRNO(name, syscall_name, args) \
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- ENTRY(name) \
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- DO_CALL (SYS_ify(syscall_name));
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-
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-#undef PSEUDO_END_NOERRNO
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-#define PSEUDO_END_NOERRNO(name) .endp C_SYMBOL_NAME(name);
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-
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-#undef PSEUDO_ERRVAL
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-#define PSEUDO_ERRVAL(name, syscall_name, args) \
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- ENTRY(name) \
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- DO_CALL (SYS_ify(syscall_name)); \
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- cmp.eq p6,p0=-1,r10; \
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-(p6) mov r10=r8;
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-
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-
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-#undef PSEUDO_END_ERRVAL
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-#define PSEUDO_END_ERRVAL(name) .endp C_SYMBOL_NAME(name);
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-
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-#undef END
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-#define END(name) \
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- .size C_SYMBOL_NAME(name), . - C_SYMBOL_NAME(name) ; \
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- .endp C_SYMBOL_NAME(name)
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-
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-#define ret br.ret.sptk.few b0
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-#define ret_NOERRNO ret
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-#define ret_ERRVAL ret
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-
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-#endif /* not __ASSEMBLER__ */
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-
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-#endif /* linux/ia64/sysdep.h */
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