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(DO_INLINE_SYSCALL): Move LOAD_ARGS_##nr up front and add LOAD_REGS_##nr. (LOAD_ARGS_0, LOAD_ARGS_1, LOAD_ARGS_2, LOAD_ARGS_3, LOAD_ARGS_4) (LOAD_ARGS_5, LOAD_ARGS_6): Load argument values into temporary variables. (LOAD_REGS_0, LOAD_REGS_1, LOAD_REGS_2, LOAD_REGS_3, LOAD_REGS_4) (LOAD_REGS_5, LOAD_REGS_6): New macros to actually load the syscall argument registers.

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This commit is contained in:
Ulrich Drepper 2004-04-13 00:26:51 +00:00
parent 21496a85f9
commit cfcc576a36
1 changed files with 42 additions and 21 deletions
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63
sysdeps/unix/sysv/linux/ia64/sysdep.h
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@ -1,4 +1,4 @@
/* Copyright (C) 1999, 2000, 2002, 2003 Free Software Foundation, Inc.
/* Copyright (C) 1999, 2000, 2002, 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Jes Sorensen, <Jes.Sorensen@cern.ch>, April 1999.
Based on code originally written by David Mosberger-Tang
@ -200,12 +200,13 @@
#ifdef IA64_USE_NEW_STUB
#define DO_INLINE_SYSCALL(name, nr, args...) \
LOAD_ARGS_##nr (args) \
register long _r8 __asm ("r8"); \
register long _r10 __asm ("r10"); \
register long _r15 __asm ("r15") = __NR_##name; \
register void *_b7 __asm ("b7") = ((tcbhead_t *) __thread_self)->private; \
long _retval; \
LOAD_ARGS_##nr (args); \
LOAD_REGS_##nr \
/* \
* Don't specify any unwind info here. We mark ar.pfs as \
* clobbered. This will force the compiler to save ar.pfs \
@ -221,11 +222,12 @@
#else /* !IA64_USE_NEW_STUB */
#define DO_INLINE_SYSCALL(name, nr, args...) \
LOAD_ARGS_##nr (args) \
register long _r8 asm ("r8"); \
register long _r10 asm ("r10"); \
register long _r15 asm ("r15") = __NR_##name; \
long _retval; \
LOAD_ARGS_##nr (args); \
LOAD_REGS_##nr \
__asm __volatile (BREAK_INSN (__BREAK_SYSCALL) \
: "=r" (_r8), "=r" (_r10), "=r" (_r15) \
ASM_OUTARGS_##nr \
@ -262,25 +264,44 @@
#undef INTERNAL_SYSCALL_ERRNO
#define INTERNAL_SYSCALL_ERRNO(val, err) (val)
#define LOAD_ARGS_0() do { } while (0)
#define LOAD_ARGS_1(out0) \
register long _out0 asm ("out0") = (long) (out0); \
#define LOAD_ARGS_0()
#define LOAD_REGS_0
#define LOAD_ARGS_1(a1) \
long _arg1 = (long) (a1); \
LOAD_ARGS_0 ()
#define LOAD_ARGS_2(out0, out1) \
register long _out1 asm ("out1") = (long) (out1); \
LOAD_ARGS_1 (out0)
#define LOAD_ARGS_3(out0, out1, out2) \
register long _out2 asm ("out2") = (long) (out2); \
LOAD_ARGS_2 (out0, out1)
#define LOAD_ARGS_4(out0, out1, out2, out3) \
register long _out3 asm ("out3") = (long) (out3); \
LOAD_ARGS_3 (out0, out1, out2)
#define LOAD_ARGS_5(out0, out1, out2, out3, out4) \
register long _out4 asm ("out4") = (long) (out4); \
LOAD_ARGS_4 (out0, out1, out2, out3)
#define LOAD_ARGS_6(out0, out1, out2, out3, out4, out5) \
register long _out5 asm ("out5") = (long) (out5); \
LOAD_ARGS_5 (out0, out1, out2, out3, out4)
#define LOAD_REGS_1 \
register long _out0 asm ("out0") = _arg1; \
LOAD_REGS_0
#define LOAD_ARGS_2(a1, a2) \
long _arg2 = (long) (a2); \
LOAD_ARGS_1 (a1)
#define LOAD_REGS_2 \
register long _out1 asm ("out1") = _arg2; \
LOAD_REGS_1
#define LOAD_ARGS_3(a1, a2, a3) \
long _arg3 = (long) (a3); \
LOAD_ARGS_2 (a1, a2)
#define LOAD_REGS_3 \
register long _out2 asm ("out2") = _arg3; \
LOAD_REGS_2
#define LOAD_ARGS_4(a1, a2, a3, a4) \
long _arg4 = (long) (a4); \
LOAD_ARGS_3 (a1, a2, a3)
#define LOAD_REGS_4 \
register long _out3 asm ("out3") = _arg4; \
LOAD_REGS_3
#define LOAD_ARGS_5(a1, a2, a3, a4, a5) \
long _arg5 = (long) (a5); \
LOAD_ARGS_4 (a1, a2, a3, a4)
#define LOAD_REGS_5 \
register long _out4 asm ("out4") = _arg5; \
LOAD_REGS_4
#define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6) \
long _arg6 = (long) (a6); \
LOAD_ARGS_5 (a1, a2, a3, a4, a5)
#define LOAD_REGS_6 \
register long _out5 asm ("out5") = _arg6; \
LOAD_REGS_5
#define ASM_OUTARGS_0
#define ASM_OUTARGS_1 ASM_OUTARGS_0, "=r" (_out0)