diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/sysdep.h | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h index 79ad72abff..8845e46157 100644 --- a/sysdeps/unix/sysv/linux/i386/sysdep.h +++ b/sysdeps/unix/sysv/linux/i386/sysdep.h @@ -1,4 +1,5 @@ -/* Copyright (C) 1992,1993,1995-2000,2002,2003 Free Software Foundation, Inc. +/* Copyright (C) 1992,1993,1995-2000,2002,2003,2004 + Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper, <drepper@gnu.org>, August 1995. @@ -343,7 +344,10 @@ asm (".L__X'%ebx = 1\n\t" /* Define a macro which expands inline into the wrapper code for a system call. This use is for internal calls that do not need to handle errors normally. It will never touch errno. This returns just what the kernel - gave back. */ + gave back. + + The _NCS variant allows non-constant syscall numbers but it is not + possible to use more than four parameters. */ #undef INTERNAL_SYSCALL #ifdef I386_USE_SYSENTER # ifdef SHARED @@ -360,6 +364,18 @@ asm (".L__X'%ebx = 1\n\t" : "i" (__NR_##name), "i" (offsetof (tcbhead_t, sysinfo)) \ ASMFMT_##nr(args) : "memory", "cc"); \ (int) resultvar; }) +# define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \ + ({ \ + register unsigned int resultvar; \ + EXTRAVAR_##nr \ + asm volatile ( \ + LOADARGS_##nr \ + "call *%%gs:%P2\n\t" \ + RESTOREARGS_##nr \ + : "=a" (resultvar) \ + : "0" (name), "i" (offsetof (tcbhead_t, sysinfo)) \ + ASMFMT_##nr(args) : "memory", "cc"); \ + (int) resultvar; }) # else # define INTERNAL_SYSCALL(name, err, nr, args...) \ ({ \ @@ -373,6 +389,17 @@ asm (".L__X'%ebx = 1\n\t" : "=a" (resultvar) \ : "i" (__NR_##name) ASMFMT_##nr(args) : "memory", "cc"); \ (int) resultvar; }) +# define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \ + ({ \ + register unsigned int resultvar; \ + EXTRAVAR_##nr \ + asm volatile ( \ + LOADARGS_##nr \ + "call *_dl_sysinfo\n\t" \ + RESTOREARGS_##nr \ + : "=a" (resultvar) \ + : "0" (name) ASMFMT_##nr(args) : "memory", "cc"); \ + (int) resultvar; }) # endif #else # define INTERNAL_SYSCALL(name, err, nr, args...) \ @@ -387,6 +414,17 @@ asm (".L__X'%ebx = 1\n\t" : "=a" (resultvar) \ : "i" (__NR_##name) ASMFMT_##nr(args) : "memory", "cc"); \ (int) resultvar; }) +# define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \ + ({ \ + register unsigned int resultvar; \ + EXTRAVAR_##nr \ + asm volatile ( \ + LOADARGS_##nr \ + "int $0x80\n\t" \ + RESTOREARGS_##nr \ + : "=a" (resultvar) \ + : "0" (name) ASMFMT_##nr(args) : "memory", "cc"); \ + (int) resultvar; }) #endif #undef INTERNAL_SYSCALL_DECL |