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author | Roland McGrath <roland@gnu.org> | 2005-05-24 06:18:37 +0000 |
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committer | Roland McGrath <roland@gnu.org> | 2005-05-24 06:18:37 +0000 |
commit | ce9b3bc17a7abc5b729b9e2cc72eb207a3617328 (patch) | |
tree | 7ccac7afcfaae36311c75b36001588534184718f /sysdeps/unix/sysv/linux/arm/sysdep.h | |
parent | 88b8441a81c7bc9414a97a0a123c09b6c724f80a (diff) | |
download | glibc-ce9b3bc17a7abc5b729b9e2cc72eb207a3617328.tar.gz glibc-ce9b3bc17a7abc5b729b9e2cc72eb207a3617328.tar.xz glibc-ce9b3bc17a7abc5b729b9e2cc72eb207a3617328.zip |
Move arm port to ports repository cvs/fedora-glibc-20050524T1606
2005-05-23 Roland McGrath <roland@redhat.com> * sysdeps/arm, sysdeps/unix/arm, sysdeps/unix/sysv/linux/arm: Subdirectories moved to ports repository. * configure.in (base_machine): Remove arm* and thumb* patterns. * shlib-versions (arm.*-.*-linux.*): Remove this pattern.
Diffstat (limited to 'sysdeps/unix/sysv/linux/arm/sysdep.h')
-rw-r--r-- | sysdeps/unix/sysv/linux/arm/sysdep.h | 236 |
1 files changed, 0 insertions, 236 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/sysdep.h b/sysdeps/unix/sysv/linux/arm/sysdep.h deleted file mode 100644 index 668aa1a2f1..0000000000 --- a/sysdeps/unix/sysv/linux/arm/sysdep.h +++ /dev/null @@ -1,236 +0,0 @@ -/* Copyright (C) 1992, 93, 1995-2000, 2002, 2003 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 - -/* There is some commonality. */ -#include <sysdeps/unix/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 savely - 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 -# 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; -#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 -#define DO_CALL(syscall_name, args) \ - DOARGS_##args \ - swi SYS_ify (syscall_name); \ - UNDOARGS_##args - -#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 -#define INTERNAL_SYSCALL(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" (SYS_ify(name)) ASM_ARGS_##nr \ - : "memory"); \ - _sys_result = _a1; \ - } \ - (int) _sys_result; }) - -#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) - -#endif /* __ASSEMBLER__ */ - -#endif /* linux/arm/sysdep.h */ |