mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-13 14:50:17 +00:00
25f1e16ef0
CET is only support for x86_64, this patch reverts: -faaee1f07ex86: Support shadow stack pointer in setjmp/longjmp. -be9ccd27c0i386: Add _CET_ENDBR to indirect jump targets in add_n.S/sub_n.S -c02695d776x86/CET: Update vfork to prevent child return -5d844e1b72i386: Enable CET support in ucontext functions -124bcde683x86: Add _CET_ENDBR to functions in crti.S -562837c002x86: Add _CET_ENDBR to functions in dl-tlsdesc.S -f753fa7deax86: Support IBT and SHSTK in Intel CET [BZ #21598] -825b58f3fbi386-mcount.S: Add _CET_ENDBR to _mcount and __fentry__ -7e119cd582i386: Use _CET_NOTRACK in i686/memcmp.S -177824e232i386: Use _CET_NOTRACK in memcmp-sse4.S -0a899af097i386: Use _CET_NOTRACK in memcpy-ssse3-rep.S -7fb613361ci386: Use _CET_NOTRACK in memcpy-ssse3.S -77a8ae0948i386: Use _CET_NOTRACK in memset-sse2-rep.S -00e7b76a8fi386: Use _CET_NOTRACK in memset-sse2.S -90d15dc577i386: Use _CET_NOTRACK in strcat-sse2.S -f1574581c7i386: Use _CET_NOTRACK in strcpy-sse2.S -4031d7484ai386/sub_n.S: Add a missing _CET_ENDBR to indirect jump - target - Checked on i686-linux-gnu.
450 lines
15 KiB
C
450 lines
15 KiB
C
/* Copyright (C) 1992-2024 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _LINUX_I386_SYSDEP_H
|
|
#define _LINUX_I386_SYSDEP_H 1
|
|
|
|
/* There is some commonality. */
|
|
#include <sysdeps/unix/sysv/linux/sysdep.h>
|
|
#include <sysdeps/unix/i386/sysdep.h>
|
|
/* Defines RTLD_PRIVATE_ERRNO and USE_DL_SYSINFO. */
|
|
#include <dl-sysdep.h>
|
|
#include <tls.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 SYS_ify(syscall_name) __NR_##syscall_name
|
|
|
|
#ifndef I386_USE_SYSENTER
|
|
# if defined USE_DL_SYSINFO \
|
|
&& (IS_IN (libc) || IS_IN (libpthread))
|
|
# define I386_USE_SYSENTER 1
|
|
# else
|
|
# define I386_USE_SYSENTER 0
|
|
# endif
|
|
#endif
|
|
|
|
#if !I386_USE_SYSENTER && IS_IN (libc) && !defined SHARED
|
|
/* Inside static libc, we have two versions. For compilation units
|
|
with !I386_USE_SYSENTER, the vDSO entry mechanism cannot be
|
|
used. */
|
|
# define I386_DO_SYSCALL_STRING "__libc_do_syscall_int80"
|
|
#else
|
|
# define I386_DO_SYSCALL_STRING "__libc_do_syscall"
|
|
#endif
|
|
|
|
#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 %eax
|
|
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. */
|
|
|
|
/* We don't want the label for the error handle to be global when we define
|
|
it here. */
|
|
#undef SYSCALL_ERROR_LABEL
|
|
#define SYSCALL_ERROR_LABEL __syscall_error
|
|
|
|
#undef PSEUDO
|
|
#define PSEUDO(name, syscall_name, args) \
|
|
.text; \
|
|
ENTRY (name) \
|
|
DO_CALL (syscall_name, args); \
|
|
cmpl $-4095, %eax; \
|
|
jae SYSCALL_ERROR_LABEL
|
|
|
|
#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)
|
|
|
|
#undef PSEUDO_END_NOERRNO
|
|
#define PSEUDO_END_NOERRNO(name) \
|
|
END (name)
|
|
|
|
#define ret_NOERRNO ret
|
|
|
|
/* 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); \
|
|
negl %eax
|
|
|
|
#undef PSEUDO_END_ERRVAL
|
|
#define PSEUDO_END_ERRVAL(name) \
|
|
END (name)
|
|
|
|
#define ret_ERRVAL ret
|
|
|
|
#define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.c is used. */
|
|
|
|
/* The original calling convention for system calls on Linux/i386 is
|
|
to use int $0x80. */
|
|
#if I386_USE_SYSENTER
|
|
# ifdef PIC
|
|
# define ENTER_KERNEL call *%gs:SYSINFO_OFFSET
|
|
# else
|
|
# define ENTER_KERNEL call *_dl_sysinfo
|
|
# endif
|
|
#else
|
|
# define ENTER_KERNEL int $0x80
|
|
#endif
|
|
|
|
/* Linux takes system call arguments in registers:
|
|
|
|
syscall number %eax call-clobbered
|
|
arg 1 %ebx call-saved
|
|
arg 2 %ecx call-clobbered
|
|
arg 3 %edx call-clobbered
|
|
arg 4 %esi call-saved
|
|
arg 5 %edi call-saved
|
|
arg 6 %ebp call-saved
|
|
|
|
The stack layout upon entering the function is:
|
|
|
|
24(%esp) Arg# 6
|
|
20(%esp) Arg# 5
|
|
16(%esp) Arg# 4
|
|
12(%esp) Arg# 3
|
|
8(%esp) Arg# 2
|
|
4(%esp) Arg# 1
|
|
(%esp) Return address
|
|
|
|
(Of course a function with say 3 arguments does not have entries for
|
|
arguments 4, 5, and 6.)
|
|
|
|
The following code tries hard to be optimal. A general assumption
|
|
(which is true according to the data books I have) is that
|
|
|
|
2 * xchg is more expensive than pushl + movl + popl
|
|
|
|
Beside this a neat trick is used. The calling conventions for Linux
|
|
tell that among the registers used for parameters %ecx and %edx need
|
|
not be saved. Beside this we may clobber this registers even when
|
|
they are not used for parameter passing.
|
|
|
|
As a result one can see below that we save the content of the %ebx
|
|
register in the %edx register when we have less than 3 arguments
|
|
(2 * movl is less expensive than pushl + popl).
|
|
|
|
Second unlike for the other registers we don't save the content of
|
|
%ecx and %edx when we have more than 1 and 2 registers resp.
|
|
|
|
The code below might look a bit long but we have to take care for
|
|
the pipelined processors (i586). Here the `pushl' and `popl'
|
|
instructions are marked as NP (not pairable) but the exception is
|
|
two consecutive of these instruction. This gives no penalty on
|
|
other processors though. */
|
|
|
|
#undef DO_CALL
|
|
#define DO_CALL(syscall_name, args) \
|
|
PUSHARGS_##args \
|
|
DOARGS_##args \
|
|
movl $SYS_ify (syscall_name), %eax; \
|
|
ENTER_KERNEL \
|
|
POPARGS_##args
|
|
|
|
#define PUSHARGS_0 /* No arguments to push. */
|
|
#define DOARGS_0 /* No arguments to frob. */
|
|
#define POPARGS_0 /* No arguments to pop. */
|
|
#define _PUSHARGS_0 /* No arguments to push. */
|
|
#define _DOARGS_0(n) /* No arguments to frob. */
|
|
#define _POPARGS_0 /* No arguments to pop. */
|
|
|
|
#define PUSHARGS_1 movl %ebx, %edx; L(SAVEBX1): PUSHARGS_0
|
|
#define DOARGS_1 _DOARGS_1 (4)
|
|
#define POPARGS_1 POPARGS_0; movl %edx, %ebx; L(RESTBX1):
|
|
#define _PUSHARGS_1 pushl %ebx; cfi_adjust_cfa_offset (4); \
|
|
cfi_rel_offset (ebx, 0); L(PUSHBX1): _PUSHARGS_0
|
|
#define _DOARGS_1(n) movl n(%esp), %ebx; _DOARGS_0(n-4)
|
|
#define _POPARGS_1 _POPARGS_0; popl %ebx; cfi_adjust_cfa_offset (-4); \
|
|
cfi_restore (ebx); L(POPBX1):
|
|
|
|
#define PUSHARGS_2 PUSHARGS_1
|
|
#define DOARGS_2 _DOARGS_2 (8)
|
|
#define POPARGS_2 POPARGS_1
|
|
#define _PUSHARGS_2 _PUSHARGS_1
|
|
#define _DOARGS_2(n) movl n(%esp), %ecx; _DOARGS_1 (n-4)
|
|
#define _POPARGS_2 _POPARGS_1
|
|
|
|
#define PUSHARGS_3 _PUSHARGS_2
|
|
#define DOARGS_3 _DOARGS_3 (16)
|
|
#define POPARGS_3 _POPARGS_3
|
|
#define _PUSHARGS_3 _PUSHARGS_2
|
|
#define _DOARGS_3(n) movl n(%esp), %edx; _DOARGS_2 (n-4)
|
|
#define _POPARGS_3 _POPARGS_2
|
|
|
|
#define PUSHARGS_4 _PUSHARGS_4
|
|
#define DOARGS_4 _DOARGS_4 (24)
|
|
#define POPARGS_4 _POPARGS_4
|
|
#define _PUSHARGS_4 pushl %esi; cfi_adjust_cfa_offset (4); \
|
|
cfi_rel_offset (esi, 0); L(PUSHSI1): _PUSHARGS_3
|
|
#define _DOARGS_4(n) movl n(%esp), %esi; _DOARGS_3 (n-4)
|
|
#define _POPARGS_4 _POPARGS_3; popl %esi; cfi_adjust_cfa_offset (-4); \
|
|
cfi_restore (esi); L(POPSI1):
|
|
|
|
#define PUSHARGS_5 _PUSHARGS_5
|
|
#define DOARGS_5 _DOARGS_5 (32)
|
|
#define POPARGS_5 _POPARGS_5
|
|
#define _PUSHARGS_5 pushl %edi; cfi_adjust_cfa_offset (4); \
|
|
cfi_rel_offset (edi, 0); L(PUSHDI1): _PUSHARGS_4
|
|
#define _DOARGS_5(n) movl n(%esp), %edi; _DOARGS_4 (n-4)
|
|
#define _POPARGS_5 _POPARGS_4; popl %edi; cfi_adjust_cfa_offset (-4); \
|
|
cfi_restore (edi); L(POPDI1):
|
|
|
|
#define PUSHARGS_6 _PUSHARGS_6
|
|
#define DOARGS_6 _DOARGS_6 (40)
|
|
#define POPARGS_6 _POPARGS_6
|
|
#define _PUSHARGS_6 pushl %ebp; cfi_adjust_cfa_offset (4); \
|
|
cfi_rel_offset (ebp, 0); L(PUSHBP1): _PUSHARGS_5
|
|
#define _DOARGS_6(n) movl n(%esp), %ebp; _DOARGS_5 (n-4)
|
|
#define _POPARGS_6 _POPARGS_5; popl %ebp; cfi_adjust_cfa_offset (-4); \
|
|
cfi_restore (ebp); L(POPBP1):
|
|
|
|
#else /* !__ASSEMBLER__ */
|
|
|
|
extern int __syscall_error (int)
|
|
attribute_hidden __attribute__ ((__regparm__ (1)));
|
|
|
|
/* Six-argument syscalls use an out-of-line helper, because an inline
|
|
asm using all registers apart from %esp cannot work reliably and
|
|
the assembler does not support describing an asm that saves and
|
|
restores %ebp itself as a separate stack frame. This structure
|
|
stores the arguments not passed in registers; %edi is passed with a
|
|
pointer to this structure. */
|
|
struct libc_do_syscall_args
|
|
{
|
|
int ebx, edi, ebp;
|
|
};
|
|
|
|
# define VDSO_NAME "LINUX_2.6"
|
|
# define VDSO_HASH 61765110
|
|
|
|
/* List of system calls which are supported as vsyscalls. */
|
|
# define HAVE_CLOCK_GETTIME_VSYSCALL "__vdso_clock_gettime"
|
|
# define HAVE_CLOCK_GETTIME64_VSYSCALL "__vdso_clock_gettime64"
|
|
# define HAVE_GETTIMEOFDAY_VSYSCALL "__vdso_gettimeofday"
|
|
# define HAVE_TIME_VSYSCALL "__vdso_time"
|
|
# define HAVE_CLOCK_GETRES_VSYSCALL "__vdso_clock_getres"
|
|
|
|
# define HAVE_CLONE3_WRAPPER 1
|
|
|
|
# undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
|
|
# define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
|
|
|
|
/* 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.
|
|
|
|
The _NCS variant allows non-constant syscall numbers but it is not
|
|
possible to use more than four parameters. */
|
|
#undef INTERNAL_SYSCALL
|
|
#define INTERNAL_SYSCALL_MAIN_0(name, args...) \
|
|
INTERNAL_SYSCALL_MAIN_INLINE(name, 0, args)
|
|
#define INTERNAL_SYSCALL_MAIN_1(name, args...) \
|
|
INTERNAL_SYSCALL_MAIN_INLINE(name, 1, args)
|
|
#define INTERNAL_SYSCALL_MAIN_2(name, args...) \
|
|
INTERNAL_SYSCALL_MAIN_INLINE(name, 2, args)
|
|
#define INTERNAL_SYSCALL_MAIN_3(name, args...) \
|
|
INTERNAL_SYSCALL_MAIN_INLINE(name, 3, args)
|
|
#define INTERNAL_SYSCALL_MAIN_4(name, args...) \
|
|
INTERNAL_SYSCALL_MAIN_INLINE(name, 4, args)
|
|
#define INTERNAL_SYSCALL_MAIN_5(name, args...) \
|
|
INTERNAL_SYSCALL_MAIN_INLINE(name, 5, args)
|
|
|
|
#define INTERNAL_SYSCALL_MAIN_NCS_0(name, args...) \
|
|
INTERNAL_SYSCALL_MAIN_NCS(name, 0, args)
|
|
#define INTERNAL_SYSCALL_MAIN_NCS_1(name, args...) \
|
|
INTERNAL_SYSCALL_MAIN_NCS(name, 1, args)
|
|
#define INTERNAL_SYSCALL_MAIN_NCS_2(name, args...) \
|
|
INTERNAL_SYSCALL_MAIN_NCS(name, 2, args)
|
|
#define INTERNAL_SYSCALL_MAIN_NCS_3(name, args...) \
|
|
INTERNAL_SYSCALL_MAIN_NCS(name, 3, args)
|
|
#define INTERNAL_SYSCALL_MAIN_NCS_4(name, args...) \
|
|
INTERNAL_SYSCALL_MAIN_NCS(name, 4, args)
|
|
#define INTERNAL_SYSCALL_MAIN_NCS_5(name, args...) \
|
|
INTERNAL_SYSCALL_MAIN_NCS(name, 5, args)
|
|
|
|
/* Each object using 6-argument inline syscalls must include a
|
|
definition of __libc_do_syscall. */
|
|
#define INTERNAL_SYSCALL_MAIN_6(name, arg1, arg2, arg3, \
|
|
arg4, arg5, arg6) \
|
|
struct libc_do_syscall_args _xv = \
|
|
{ \
|
|
(int) (arg1), \
|
|
(int) (arg5), \
|
|
(int) (arg6) \
|
|
}; \
|
|
asm volatile ( \
|
|
"movl %1, %%eax\n\t" \
|
|
"call " I386_DO_SYSCALL_STRING \
|
|
: "=a" (resultvar) \
|
|
: "i" (__NR_##name), "c" (arg2), "d" (arg3), "S" (arg4), "D" (&_xv) \
|
|
: "memory", "cc")
|
|
#define INTERNAL_SYSCALL_MAIN_NCS_6(name, arg1, arg2, arg3, \
|
|
arg4, arg5, arg6) \
|
|
struct libc_do_syscall_args _xv = \
|
|
{ \
|
|
(int) (arg1), \
|
|
(int) (arg5), \
|
|
(int) (arg6) \
|
|
}; \
|
|
asm volatile ( \
|
|
"movl %1, %%eax\n\t" \
|
|
"call " I386_DO_SYSCALL_STRING \
|
|
: "=a" (resultvar) \
|
|
: "a" (name), "c" (arg2), "d" (arg3), "S" (arg4), "D" (&_xv) \
|
|
: "memory", "cc")
|
|
|
|
#define INTERNAL_SYSCALL(name, nr, args...) \
|
|
({ \
|
|
register unsigned int resultvar; \
|
|
INTERNAL_SYSCALL_MAIN_##nr (name, args); \
|
|
(int) resultvar; })
|
|
#define INTERNAL_SYSCALL_NCS(name, nr, args...) \
|
|
({ \
|
|
register unsigned int resultvar; \
|
|
INTERNAL_SYSCALL_MAIN_NCS_##nr (name, args); \
|
|
(int) resultvar; })
|
|
|
|
#if I386_USE_SYSENTER
|
|
# ifdef PIC
|
|
# define INTERNAL_SYSCALL_MAIN_INLINE(name, nr, args...) \
|
|
LOADREGS_##nr(args) \
|
|
asm volatile ( \
|
|
"call *%%gs:%P2" \
|
|
: "=a" (resultvar) \
|
|
: "a" (__NR_##name), "i" (offsetof (tcbhead_t, sysinfo)) \
|
|
ASMARGS_##nr(args) : "memory", "cc")
|
|
# define INTERNAL_SYSCALL_MAIN_NCS(name, nr, args...) \
|
|
LOADREGS_##nr(args) \
|
|
asm volatile ( \
|
|
"call *%%gs:%P2" \
|
|
: "=a" (resultvar) \
|
|
: "a" (name), "i" (offsetof (tcbhead_t, sysinfo)) \
|
|
ASMARGS_##nr(args) : "memory", "cc")
|
|
# else /* I386_USE_SYSENTER && !PIC */
|
|
# define INTERNAL_SYSCALL_MAIN_INLINE(name, nr, args...) \
|
|
LOADREGS_##nr(args) \
|
|
asm volatile ( \
|
|
"call *_dl_sysinfo" \
|
|
: "=a" (resultvar) \
|
|
: "a" (__NR_##name) ASMARGS_##nr(args) : "memory", "cc")
|
|
# define INTERNAL_SYSCALL_MAIN_NCS(name, nr, args...) \
|
|
LOADREGS_##nr(args) \
|
|
asm volatile ( \
|
|
"call *_dl_sysinfo" \
|
|
: "=a" (resultvar) \
|
|
: "a" (name) ASMARGS_##nr(args) : "memory", "cc")
|
|
# endif /* I386_USE_SYSENTER && !PIC */
|
|
#else /* !I386_USE_SYSENTER */
|
|
# define INTERNAL_SYSCALL_MAIN_INLINE(name, nr, args...) \
|
|
LOADREGS_##nr(args) \
|
|
asm volatile ( \
|
|
"int $0x80" \
|
|
: "=a" (resultvar) \
|
|
: "a" (__NR_##name) ASMARGS_##nr(args) : "memory", "cc")
|
|
# define INTERNAL_SYSCALL_MAIN_NCS(name, nr, args...) \
|
|
LOADREGS_##nr(args) \
|
|
asm volatile ( \
|
|
"int $0x80" \
|
|
: "=a" (resultvar) \
|
|
: "a" (name) ASMARGS_##nr(args) : "memory", "cc")
|
|
#endif /* !I386_USE_SYSENTER */
|
|
|
|
#define LOADREGS_0()
|
|
#define ASMARGS_0()
|
|
#define LOADREGS_1(arg1) \
|
|
LOADREGS_0 ()
|
|
#define ASMARGS_1(arg1) \
|
|
ASMARGS_0 (), "b" ((unsigned int) (arg1))
|
|
#define LOADREGS_2(arg1, arg2) \
|
|
LOADREGS_1 (arg1)
|
|
#define ASMARGS_2(arg1, arg2) \
|
|
ASMARGS_1 (arg1), "c" ((unsigned int) (arg2))
|
|
#define LOADREGS_3(arg1, arg2, arg3) \
|
|
LOADREGS_2 (arg1, arg2)
|
|
#define ASMARGS_3(arg1, arg2, arg3) \
|
|
ASMARGS_2 (arg1, arg2), "d" ((unsigned int) (arg3))
|
|
#define LOADREGS_4(arg1, arg2, arg3, arg4) \
|
|
LOADREGS_3 (arg1, arg2, arg3)
|
|
#define ASMARGS_4(arg1, arg2, arg3, arg4) \
|
|
ASMARGS_3 (arg1, arg2, arg3), "S" ((unsigned int) (arg4))
|
|
#define LOADREGS_5(arg1, arg2, arg3, arg4, arg5) \
|
|
LOADREGS_4 (arg1, arg2, arg3, arg4)
|
|
#define ASMARGS_5(arg1, arg2, arg3, arg4, arg5) \
|
|
ASMARGS_4 (arg1, arg2, arg3, arg4), "D" ((unsigned int) (arg5))
|
|
|
|
#define ASMFMT_0()
|
|
#ifdef __PIC__
|
|
# define ASMFMT_1(arg1) \
|
|
, "cd" (arg1)
|
|
# define ASMFMT_2(arg1, arg2) \
|
|
, "d" (arg1), "c" (arg2)
|
|
# define ASMFMT_3(arg1, arg2, arg3) \
|
|
, "D" (arg1), "c" (arg2), "d" (arg3)
|
|
# define ASMFMT_4(arg1, arg2, arg3, arg4) \
|
|
, "D" (arg1), "c" (arg2), "d" (arg3), "S" (arg4)
|
|
# define ASMFMT_5(arg1, arg2, arg3, arg4, arg5) \
|
|
, "0" (arg1), "m" (_xv), "c" (arg2), "d" (arg3), "S" (arg4), "D" (arg5)
|
|
#else
|
|
# define ASMFMT_1(arg1) \
|
|
, "b" (arg1)
|
|
# define ASMFMT_2(arg1, arg2) \
|
|
, "b" (arg1), "c" (arg2)
|
|
# define ASMFMT_3(arg1, arg2, arg3) \
|
|
, "b" (arg1), "c" (arg2), "d" (arg3)
|
|
# define ASMFMT_4(arg1, arg2, arg3, arg4) \
|
|
, "b" (arg1), "c" (arg2), "d" (arg3), "S" (arg4)
|
|
# define ASMFMT_5(arg1, arg2, arg3, arg4, arg5) \
|
|
, "b" (arg1), "c" (arg2), "d" (arg3), "S" (arg4), "D" (arg5)
|
|
#endif
|
|
|
|
#define EXTRAVAR_0
|
|
#define EXTRAVAR_1
|
|
#define EXTRAVAR_2
|
|
#define EXTRAVAR_3
|
|
#define EXTRAVAR_4
|
|
#ifdef __PIC__
|
|
# define EXTRAVAR_5 int _xv;
|
|
#else
|
|
# define EXTRAVAR_5
|
|
#endif
|
|
|
|
#endif /* __ASSEMBLER__ */
|
|
|
|
#endif /* linux/i386/sysdep.h */
|