diff options
| -rw-r--r-- | libc/sysdeps/linux/arm/sysdep.h | 285 | ||||
| -rw-r--r-- | libpthread/nptl/sysdeps/unix/sysv/linux/arm/sysdep.h | 334 |
2 files changed, 278 insertions, 341 deletions
diff --git a/libc/sysdeps/linux/arm/sysdep.h b/libc/sysdeps/linux/arm/sysdep.h index 3c7a182bb..0c39dfa31 100644 --- a/libc/sysdeps/linux/arm/sysdep.h +++ b/libc/sysdeps/linux/arm/sysdep.h @@ -17,8 +17,20 @@ 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 <common/sysdep.h> +#include <sys/syscall.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__ /* Syntactic details of assembler. */ @@ -50,7 +62,7 @@ mov pc, _reg #endif #else /* APCS-26 */ -#define LOADREGS(cond, base, reglist...)\ +#define LOADREGS(cond, base, reglist...) \ ldm##cond base,reglist^ #define RETINSTR(cond, reg) \ mov##cond##s pc, reg @@ -59,15 +71,15 @@ #endif /* Define an entry point visible from C. */ -#define ENTRY(name) \ - ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \ - ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),function) \ - .align ALIGNARG(4); \ - name##: \ +#define ENTRY(name) \ + ASM_GLOBAL_DIRECTIVE C_SYMBOL_NAME(name); \ + ASM_TYPE_DIRECTIVE (C_SYMBOL_NAME(name),function) \ + .align ALIGNARG(4); \ + name##: \ CALL_MCOUNT #undef END -#define END(name) \ +#define END(name) \ ASM_SIZE_DIRECTIVE(name) /* If compiled for profiling, call `mcount' at the start of each function. */ @@ -87,5 +99,264 @@ #define syscall_error __syscall_error #define mcount _mcount #endif +/* 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)) + +#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 */ 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 */ |