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-rw-r--r--libpthread/nptl/sysdeps/unix/sysv/linux/arm/sysdep.h334
1 files changed, 0 insertions, 334 deletions
diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/sysdep.h b/libpthread/nptl/sysdeps/unix/sysv/linux/arm/sysdep.h
deleted file mode 100644
index 23c2bfc8c..000000000
--- a/libpthread/nptl/sysdeps/unix/sysv/linux/arm/sysdep.h
+++ /dev/null
@@ -1,334 +0,0 @@
-/* Copyright (C) 1992, 93, 1995-2000, 2002, 2003, 2005, 2006
- Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>, August 1995.
- ARM changes by Philip Blundell, <pjb27@cam.ac.uk>, May 1997.
-
- 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#ifndef _LINUX_ARM_SYSDEP_H
-#define _LINUX_ARM_SYSDEP_H 1
-
-#include <sys/syscall.h>
-
-/* There is some commonality. */
-#include <sysdeps/arm/sysdep.h>
-
-/* For Linux we can use the system call table in the header file
- /usr/include/asm/unistd.h
- of the kernel. But these symbols do not follow the SYS_* syntax
- so we have to redefine the `SYS_ify' macro here. */
-#undef SYS_ify
-#define SWI_BASE (0x900000)
-#define SYS_ify(syscall_name) (__NR_##syscall_name)
-
-
-#ifdef __ASSEMBLER__
-
-/* Linux uses a negative return value to indicate syscall errors,
- unlike most Unices, which use the condition codes' carry flag.
-
- Since version 2.1 the return value of a system call might be
- negative even if the call succeeded. E.g., the `lseek' system call
- might return a large offset. Therefore we must not anymore test
- for < 0, but test for a real error by making sure the value in R0
- is a real error number. Linus said he will make sure the no syscall
- returns a value in -1 .. -4095 as a valid result so we can safely
- test with -4095. */
-
-#undef PSEUDO
-#define PSEUDO(name, syscall_name, args) \
- .text; \
- ENTRY (name); \
- DO_CALL (syscall_name, args); \
- cmn r0, $4096;
-
-#define PSEUDO_RET \
- RETINSTR(cc, lr); \
- b PLTJMP(SYSCALL_ERROR)
-#undef ret
-#define ret PSEUDO_RET
-
-#undef PSEUDO_END
-#define PSEUDO_END(name) \
- SYSCALL_ERROR_HANDLER \
- END (name)
-
-#undef PSEUDO_NOERRNO
-#define PSEUDO_NOERRNO(name, syscall_name, args) \
- .text; \
- ENTRY (name); \
- DO_CALL (syscall_name, args);
-
-#define PSEUDO_RET_NOERRNO \
- DO_RET (lr);
-
-#undef ret_NOERRNO
-#define ret_NOERRNO PSEUDO_RET_NOERRNO
-
-#undef PSEUDO_END_NOERRNO
-#define PSEUDO_END_NOERRNO(name) \
- END (name)
-
-/* The function has to return the error code. */
-#undef PSEUDO_ERRVAL
-#define PSEUDO_ERRVAL(name, syscall_name, args) \
- .text; \
- ENTRY (name) \
- DO_CALL (syscall_name, args); \
- rsb r0, r0, #0
-
-#undef PSEUDO_END_ERRVAL
-#define PSEUDO_END_ERRVAL(name) \
- END (name)
-
-#define ret_ERRVAL PSEUDO_RET_NOERRNO
-
-#if NOT_IN_libc
-# define SYSCALL_ERROR __local_syscall_error
-# ifdef RTLD_PRIVATE_ERRNO
-# define SYSCALL_ERROR_HANDLER \
-__local_syscall_error: \
- ldr r1, 1f; \
- rsb r0, r0, #0; \
-0: str r0, [pc, r1]; \
- mvn r0, #0; \
- DO_RET(lr); \
-1: .word C_SYMBOL_NAME(rtld_errno) - 0b - 8;
-# else
-# define SYSCALL_ERROR_HANDLER \
-__local_syscall_error: \
- str lr, [sp, #-4]!; \
- str r0, [sp, #-4]!; \
- bl PLTJMP(C_SYMBOL_NAME(__errno_location)); \
- ldr r1, [sp], #4; \
- rsb r1, r1, #0; \
- str r1, [r0]; \
- mvn r0, #0; \
- ldr pc, [sp], #4;
-# endif
-#else
-# define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */
-# define SYSCALL_ERROR __syscall_error
-#endif
-
-/* Linux takes system call args in registers:
- syscall number in the SWI instruction
- arg 1 r0
- arg 2 r1
- arg 3 r2
- arg 4 r3
- arg 5 r4 (this is different from the APCS convention)
- arg 6 r5
- arg 7 r6
-
- The compiler is going to form a call by coming here, through PSEUDO, with
- arguments
- syscall number in the DO_CALL macro
- arg 1 r0
- arg 2 r1
- arg 3 r2
- arg 4 r3
- arg 5 [sp]
- arg 6 [sp+4]
- arg 7 [sp+8]
-
- We need to shuffle values between R4..R6 and the stack so that the
- caller's v1..v3 and stack frame are not corrupted, and the kernel
- sees the right arguments.
-
-*/
-
-#undef DO_CALL
-#if defined(__ARM_EABI__)
-#define DO_CALL(syscall_name, args) \
- DOARGS_##args \
- mov ip, r7; \
- ldr r7, =SYS_ify (syscall_name); \
- swi 0x0; \
- mov r7, ip; \
- UNDOARGS_##args
-#else
-#define DO_CALL(syscall_name, args) \
- DOARGS_##args \
- swi SYS_ify (syscall_name); \
- UNDOARGS_##args
-#endif
-
-#define DOARGS_0 /* nothing */
-#define DOARGS_1 /* nothing */
-#define DOARGS_2 /* nothing */
-#define DOARGS_3 /* nothing */
-#define DOARGS_4 /* nothing */
-#define DOARGS_5 str r4, [sp, $-4]!; ldr r4, [sp, $4];
-#define DOARGS_6 mov ip, sp; stmfd sp!, {r4, r5}; ldmia ip, {r4, r5};
-#define DOARGS_7 mov ip, sp; stmfd sp!, {r4, r5, r6}; ldmia ip, {r4, r5, r6};
-
-#define UNDOARGS_0 /* nothing */
-#define UNDOARGS_1 /* nothing */
-#define UNDOARGS_2 /* nothing */
-#define UNDOARGS_3 /* nothing */
-#define UNDOARGS_4 /* nothing */
-#define UNDOARGS_5 ldr r4, [sp], $4;
-#define UNDOARGS_6 ldmfd sp!, {r4, r5};
-#define UNDOARGS_7 ldmfd sp!, {r4, r5, r6};
-
-#else /* not __ASSEMBLER__ */
-
-/* Define a macro which expands into the inline wrapper code for a system
- call. */
-#undef INLINE_SYSCALL
-#define INLINE_SYSCALL(name, nr, args...) \
- ({ unsigned int _sys_result = INTERNAL_SYSCALL (name, , nr, args); \
- if (__builtin_expect (INTERNAL_SYSCALL_ERROR_P (_sys_result, ), 0)) \
- { \
- __set_errno (INTERNAL_SYSCALL_ERRNO (_sys_result, )); \
- _sys_result = (unsigned int) -1; \
- } \
- (int) _sys_result; })
-
-#undef INTERNAL_SYSCALL_DECL
-#define INTERNAL_SYSCALL_DECL(err) do { } while (0)
-
-#undef INTERNAL_SYSCALL_RAW
-#if defined(__thumb__)
-/* Hide the use of r7 from the compiler, this would be a lot
- * easier but for the fact that the syscalls can exceed 255.
- * For the moment the LOAD_ARG_7 is sacrificed.
- * We can't use push/pop inside the asm because that breaks
- * unwinding (ie. thread cancellation).
- */
-#define INTERNAL_SYSCALL_RAW(name, err, nr, args...) \
- ({ unsigned int _sys_result; \
- { \
- int _sys_buf[2]; \
- register int _a1 __asm__ ("a1"); \
- register int *_v3 __asm__ ("v3") = _sys_buf; \
- LOAD_ARGS_##nr (args) \
- *_v3 = (int) (name); \
- __asm__ __volatile__ ("str r7, [v3, #4]\n" \
- "\tldr r7, [v3]\n" \
- "\tswi 0 @ syscall " #name "\n" \
- "\tldr r7, [v3, #4]" \
- : "=r" (_a1) \
- : "r" (_v3) ASM_ARGS_##nr \
- : "memory"); \
- _sys_result = _a1; \
- } \
- (int) _sys_result; })
-#elif defined(__ARM_EABI__)
-#define INTERNAL_SYSCALL_RAW(name, err, nr, args...) \
- ({unsigned int _sys_result; \
- { \
- register int _a1 __asm__ ("r0"), _nr __asm__ ("r7"); \
- LOAD_ARGS_##nr (args) \
- _nr = name; \
- __asm__ __volatile__ ("swi 0x0 @ syscall " #name \
- : "=r" (_a1) \
- : "r" (_nr) ASM_ARGS_##nr \
- : "memory"); \
- _sys_result = _a1; \
- } \
- (int) _sys_result; })
-#else /* !defined(__ARM_EABI__) */
-#define INTERNAL_SYSCALL_RAW(name, err, nr, args...) \
- ({ unsigned int _sys_result; \
- { \
- register int _a1 __asm__ ("a1"); \
- LOAD_ARGS_##nr (args) \
- __asm__ __volatile__ ("swi %1 @ syscall " #name \
- : "=r" (_a1) \
- : "i" (name) ASM_ARGS_##nr \
- : "memory"); \
- _sys_result = _a1; \
- } \
- (int) _sys_result; })
-#endif
-
-#undef INTERNAL_SYSCALL
-#define INTERNAL_SYSCALL(name, err, nr, args...) \
- INTERNAL_SYSCALL_RAW(SYS_ify(name), err, nr, args)
-
-#undef INTERNAL_SYSCALL_ARM
-#define INTERNAL_SYSCALL_ARM(name, err, nr, args...) \
- INTERNAL_SYSCALL_RAW(__ARM_NR_##name, err, nr, args)
-
-#undef INTERNAL_SYSCALL_ERROR_P
-#define INTERNAL_SYSCALL_ERROR_P(val, err) \
- ((unsigned int) (val) >= 0xfffff001u)
-
-#undef INTERNAL_SYSCALL_ERRNO
-#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val))
-
-#define LOAD_ARGS_0()
-#define ASM_ARGS_0
-#define LOAD_ARGS_1(a1) \
- _a1 = (int) (a1); \
- LOAD_ARGS_0 ()
-#define ASM_ARGS_1 ASM_ARGS_0, "r" (_a1)
-#define LOAD_ARGS_2(a1, a2) \
- register int _a2 __asm__ ("a2") = (int) (a2); \
- LOAD_ARGS_1 (a1)
-#define ASM_ARGS_2 ASM_ARGS_1, "r" (_a2)
-#define LOAD_ARGS_3(a1, a2, a3) \
- register int _a3 __asm__ ("a3") = (int) (a3); \
- LOAD_ARGS_2 (a1, a2)
-#define ASM_ARGS_3 ASM_ARGS_2, "r" (_a3)
-#define LOAD_ARGS_4(a1, a2, a3, a4) \
- register int _a4 __asm__ ("a4") = (int) (a4); \
- LOAD_ARGS_3 (a1, a2, a3)
-#define ASM_ARGS_4 ASM_ARGS_3, "r" (_a4)
-#define LOAD_ARGS_5(a1, a2, a3, a4, a5) \
- register int _v1 __asm__ ("v1") = (int) (a5); \
- LOAD_ARGS_4 (a1, a2, a3, a4)
-#define ASM_ARGS_5 ASM_ARGS_4, "r" (_v1)
-#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \
- register int _v2 __asm__ ("v2") = (int) (a6); \
- LOAD_ARGS_5 (a1, a2, a3, a4, a5)
-#define ASM_ARGS_6 ASM_ARGS_5, "r" (_v2)
-#define LOAD_ARGS_7(a1, a2, a3, a4, a5, a6, a7) \
- register int _v3 __asm__ ("v3") = (int) (a7); \
- LOAD_ARGS_6 (a1, a2, a3, a4, a5, a6)
-#define ASM_ARGS_7 ASM_ARGS_6, "r" (_v3)
-
-#if defined(__ARM_EABI__)
-#undef INTERNAL_SYSCALL_NCS
-#define INTERNAL_SYSCALL_NCS(number, err, nr, args...) \
- INTERNAL_SYSCALL_RAW(number, err, nr, args)
-#else
-/* We can't implement non-constant syscalls directly since the syscall
- number is normally encoded in the instruction. So use SYS_syscall. */
-#undef INTERNAL_SYSCALL_NCS
-#define INTERNAL_SYSCALL_NCS(number, err, nr, args...) \
- INTERNAL_SYSCALL_NCS_##nr (number, err, args)
-
-#define INTERNAL_SYSCALL_NCS_0(number, err, args...) \
- INTERNAL_SYSCALL (syscall, err, 1, number, args)
-#define INTERNAL_SYSCALL_NCS_1(number, err, args...) \
- INTERNAL_SYSCALL (syscall, err, 2, number, args)
-#define INTERNAL_SYSCALL_NCS_2(number, err, args...) \
- INTERNAL_SYSCALL (syscall, err, 3, number, args)
-#define INTERNAL_SYSCALL_NCS_3(number, err, args...) \
- INTERNAL_SYSCALL (syscall, err, 4, number, args)
-#define INTERNAL_SYSCALL_NCS_4(number, err, args...) \
- INTERNAL_SYSCALL (syscall, err, 5, number, args)
-#define INTERNAL_SYSCALL_NCS_5(number, err, args...) \
- INTERNAL_SYSCALL (syscall, err, 6, number, args)
-#endif
-
-#endif /* __ASSEMBLER__ */
-
-#endif /* linux/arm/sysdep.h */
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