Re: 2.6.6-rc3-mm2 [sparc, sparc64, mips syscall broken]

Paul Jackson
2004-05-05T17:35:22Z

She doesn't build for sparc64 either (using crosstool). And I'd
wager a pretty penny this applies to sparc and mips as well.

The patch kernel-syscalls-retval-fix.patch is missing a bunch of
semicolons. Several lines that look like:

__syscall_return(type, __res) \

should instead be:

__syscall_return(type, __res); \

Here's the 2.6.6-rc3-mm2 kernel-syscalls-retval-fix.patch updated with
this change, for all three sparc, sparc64, and mips. I am only able to
test build sparc64, and unable to test boot any of this. With this
change, sparc64 built.

============================ snip ============================

Index: 2.6.6-rc3-mm2/include/asm-alpha/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-alpha/unistd.h 2004-05-05 09:35:45.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-alpha/unistd.h 2004-05-05 09:36:24.000000000 -0700
@@ -378,8 +378,12 @@

#if defined(__GNUC__)

+#ifdef __KERNEL__
+#define _syscall_return(type) return ((type) _sc_ret)
+#else
#define _syscall_return(type) \
return (_sc_err ? errno = _sc_ret, _sc_ret = -1L : 0), (type) _sc_ret
+#endif

#define _syscall_clobbers \
"$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", \
Index: 2.6.6-rc3-mm2/include/asm-arm26/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-arm26/unistd.h 2004-05-05 09:33:36.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-arm26/unistd.h 2004-05-05 09:36:24.000000000 -0700
@@ -277,6 +277,9 @@
#define __syscall(name) "swi\t" __sys1(__NR_##name) "\n\t"
#endif

+#ifdef __KERNEL__
+#define __syscall_return(type, res) return ((type)(res))
+#else
#define __syscall_return(type, res) \
do { \
if ((unsigned long)(res) >= (unsigned long)(-125)) { \
@@ -285,6 +288,7 @@
} \
return (type) (res); \
} while (0)
+#endif

#define _syscall0(type,name) \
type name(void) { \
Index: 2.6.6-rc3-mm2/include/asm-arm/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-arm/unistd.h 2004-05-05 09:33:34.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-arm/unistd.h 2004-05-05 09:36:24.000000000 -0700
@@ -324,6 +324,9 @@
#endif
#endif

+#ifdef __KERNEL__
+#define __syscall_return(type, res) return ((type)(res))
+#else
#define __syscall_return(type, res) \
do { \
if ((unsigned long)(res) >= (unsigned long)(-125)) { \
@@ -332,6 +335,7 @@
} \
return (type) (res); \
} while (0)
+#endif

#define _syscall0(type,name) \
type name(void) { \
Index: 2.6.6-rc3-mm2/include/asm-h8300/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-h8300/unistd.h 2004-05-05 09:33:42.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-h8300/unistd.h 2004-05-05 09:36:24.000000000 -0700
@@ -276,6 +276,9 @@
/* user-visible error numbers are in the range -1 - -122: see
<asm-m68k/errno.h> */

+#ifdef __KERNEL__
+#define __syscall_return(type, res) return ((type)(res))
+#else
#define __syscall_return(type, res) \
do { \
if ((unsigned long)(res) >= (unsigned long)(-125)) { \
@@ -287,6 +290,7 @@
} \
return (type) (res); \
} while (0)
+#endif

#define _syscall0(type, name) \
type name(void) \
Index: 2.6.6-rc3-mm2/include/asm-i386/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-i386/unistd.h 2004-05-05 09:33:43.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-i386/unistd.h 2004-05-05 09:36:24.000000000 -0700
@@ -293,6 +293,9 @@

/* user-visible error numbers are in the range -1 - -124: see <asm-i386/errno.h> */

+#ifdef __KERNEL__
+#define __syscall_return(type, res) return ((type)(res))
+#else
#define __syscall_return(type, res) \
do { \
if ((unsigned long)(res) >= (unsigned long)(-125)) { \
@@ -301,6 +304,7 @@
} \
return (type) (res); \
} while (0)
+#endif

/* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */
#define _syscall0(type,name) \
Index: 2.6.6-rc3-mm2/include/asm-m68knommu/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-m68knommu/unistd.h 2004-05-05 09:33:46.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-m68knommu/unistd.h 2004-05-05 09:36:24.000000000 -0700
@@ -226,17 +226,18 @@
/* user-visible error numbers are in the range -1 - -122: see
<asm-m68k/errno.h> */

+#ifdef __KERNEL__
+#define __syscall_return(type, res) return ((type)(res))
+#else
#define __syscall_return(type, res) \
do { \
if ((unsigned long)(res) >= (unsigned long)(-125)) { \
- /* avoid using res which is declared to be in register d0; \
- errno might expand to a function call and clobber it. */ \
- int __err = -(res); \
- errno = __err; \
+ errno = -(res); \
res = -1; \
} \
return (type) (res); \
} while (0)
+#endif

#define _syscall0(type, name) \
type name(void) \
@@ -248,11 +249,7 @@
: "=g" (__res) \
: "i" (__NR_##name) \
: "cc", "%d0"); \
- if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
- errno = -__res; \
- __res = -1; \
- } \
- return (type)__res; \
+ __syscall_return(type, __res); \
}

#define _syscall1(type, name, atype, a) \
@@ -267,11 +264,7 @@
: "i" (__NR_##name), \
"g" ((long)a) \
: "cc", "%d0", "%d1"); \
- if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
- errno = -__res; \
- __res = -1; \
- } \
- return (type)__res; \
+ __syscall_return(type, __res); \
}

#define _syscall2(type, name, atype, a, btype, b) \
@@ -288,11 +281,7 @@
"a" ((long)a), \
"g" ((long)b) \
: "cc", "%d0", "%d1", "%d2"); \
- if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
- errno = -__res; \
- __res = -1; \
- } \
- return (type)__res; \
+ __syscall_return(type, __res); \
}

#define _syscall3(type, name, atype, a, btype, b, ctype, c) \
@@ -311,11 +300,7 @@
"a" ((long)b), \
"g" ((long)c) \
: "cc", "%d0", "%d1", "%d2", "%d3"); \
- if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
- errno = -__res; \
- __res = -1; \
- } \
- return (type)__res; \
+ __syscall_return(type, __res); \
}

#define _syscall4(type, name, atype, a, btype, b, ctype, c, dtype, d) \
@@ -337,11 +322,7 @@
"g" ((long)d) \
: "cc", "%d0", "%d1", "%d2", "%d3", \
"%d4"); \
- if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
- errno = -__res; \
- __res = -1; \
- } \
- return (type)__res; \
+ __syscall_return(type, __res); \
}

#define _syscall5(type, name, atype, a, btype, b, ctype, c, dtype, d, etype, e) \
@@ -365,11 +346,7 @@
"g" ((long)e) \
: "cc", "%d0", "%d1", "%d2", "%d3", \
"%d4", "%d5"); \
- if ((unsigned long)(__res) >= (unsigned long)(-125)) { \
- errno = -__res; \
- __res = -1; \
- } \
- return (type)__res; \
+ __syscall_return(type, __res); \
}

Index: 2.6.6-rc3-mm2/include/asm-m68k/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-m68k/unistd.h 2004-05-05 09:33:46.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-m68k/unistd.h 2004-05-05 09:36:24.000000000 -0700
@@ -244,6 +244,9 @@
/* user-visible error numbers are in the range -1 - -124: see
<asm-m68k/errno.h> */

+#ifdef __KERNEL__
+#define __syscall_return(type, res) return ((type)(res))
+#else
#define __syscall_return(type, res) \
do { \
if ((unsigned long)(res) >= (unsigned long)(-125)) { \
@@ -255,6 +258,7 @@
} \
return (type) (res); \
} while (0)
+#endif

#define _syscall0(type,name) \
type name(void) \
Index: 2.6.6-rc3-mm2/include/asm-mips/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-mips/unistd.h 2004-05-05 09:35:58.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-mips/unistd.h 2004-05-05 09:36:24.000000000 -0700
@@ -820,6 +820,16 @@

#ifndef __ASSEMBLY__

+#ifdef __KERNEL__
+#define __syscall_return(type, res) return ((type)(res))
+#else
+do { \
+ if (__a3 == 0) \
+ return (type)(res); \
+ errno = res; \
+ return -1; \
+} while (0)
+
/* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */
#define _syscall0(type,name) \
type name(void) \
@@ -837,10 +847,7 @@
: "i" (__NR_##name) \
: "$2", "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24"); \
\
- if (__a3 == 0) \
- return (type) __v0; \
- errno = __v0; \
- return -1; \
+ __syscall_return(type, __v0); \
}

/*
@@ -864,10 +871,7 @@
: "r" (__a0), "i" (__NR_##name) \
: "$2", "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24"); \
\
- if (__a3 == 0) \
- return (type) __v0; \
- errno = __v0; \
- return -1; \
+ __syscall_return(type, __v0); \
}

#define _syscall2(type,name,atype,a,btype,b) \
@@ -888,10 +892,7 @@
: "r" (__a0), "r" (__a1), "i" (__NR_##name) \
: "$2", "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24"); \
\
- if (__a3 == 0) \
- return (type) __v0; \
- errno = __v0; \
- return -1; \
+ __syscall_return(type, __v0); \
}

#define _syscall3(type,name,atype,a,btype,b,ctype,c) \
@@ -913,10 +914,7 @@
: "r" (__a0), "r" (__a1), "r" (__a2), "i" (__NR_##name) \
: "$2", "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24"); \
\
- if (__a3 == 0) \
- return (type) __v0; \
- errno = __v0; \
- return -1; \
+ __syscall_return(type, __v0); \
}

#define _syscall4(type,name,atype,a,btype,b,ctype,c,dtype,d) \
@@ -938,10 +936,7 @@
: "r" (__a0), "r" (__a1), "r" (__a2), "i" (__NR_##name) \
: "$2", "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24"); \
\
- if (__a3 == 0) \
- return (type) __v0; \
- errno = __v0; \
- return -1; \
+ __syscall_return(type, __v0); \
}

#if (_MIPS_SIM == _MIPS_SIM_ABI32)
@@ -974,10 +969,7 @@
"m" ((unsigned long)e) \
: "$2", "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24"); \
\
- if (__a3 == 0) \
- return (type) __v0; \
- errno = __v0; \
- return -1; \
+ __syscall_return(type, __v0); \
}

#define _syscall6(type,name,atype,a,btype,b,ctype,c,dtype,d,etype,e,ftype,f) \
@@ -1006,10 +998,7 @@
"m" ((unsigned long)e), "m" ((unsigned long)f) \
: "$2", "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24"); \
\
- if (__a3 == 0) \
- return (type) __v0; \
- errno = __v0; \
- return -1; \
+ __syscall_return(type, __v0); \
}

#endif /* (_MIPS_SIM == _MIPS_SIM_ABI32) */
@@ -1036,10 +1025,7 @@
: "r" (__a0), "r" (__a1), "r" (__a2), "i" (__NR_##name) \
: "$2","$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24"); \
\
- if (__a3 == 0) \
- return (type) __v0; \
- errno = __v0; \
- return -1; \
+ __syscall_return(type, __v0); \
}

#define _syscall6(type,name,atype,a,btype,b,ctype,c,dtype,d,etype,e,ftype,f) \
@@ -1064,10 +1050,7 @@
"i" (__NR_##name) \
: "$2","$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24"); \
\
- if (__a3 == 0) \
- return (type) __v0; \
- errno = __v0; \
- return -1; \
+ __syscall_return(type, __v0); \
}

#endif /* (_MIPS_SIM == _MIPS_SIM_NABI32) || (_MIPS_SIM == _MIPS_SIM_ABI64) */
Index: 2.6.6-rc3-mm2/include/asm-parisc/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-parisc/unistd.h 2004-05-05 09:33:49.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-parisc/unistd.h 2004-05-05 09:36:24.000000000 -0700
@@ -739,6 +739,17 @@

#define SYS_ify(syscall_name) __NR_##syscall_name

+#ifdef __KERNEL__
+#define __syscall_return __sys_res
+#else
+#define __syscall_return \
+ if (__sys_res >= (unsigned long)-4095) { \
+ errno = -__sys_res; \
+ __sys_res = (unsigned long)-1; \
+ } \
+ __sys_res; \
+#endif
+
/* The system call number MUST ALWAYS be loaded in the delay slot of
the ble instruction, or restarting system calls WILL NOT WORK. See
arch/parisc/kernel/signal.c - dhd, 2000-07-26 */
@@ -755,11 +766,7 @@
); \
__sys_res = __res; \
} \
- if (__sys_res >= (unsigned long)-4095) { \
- errno = -__sys_res; \
- __sys_res = (unsigned long)-1; \
- } \
- __sys_res; \
+ __syscall_return \
})

#define K_LOAD_ARGS_0()
Index: 2.6.6-rc3-mm2/include/asm-ppc64/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-ppc64/unistd.h 2004-05-05 09:33:51.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-ppc64/unistd.h 2004-05-05 09:36:24.000000000 -0700
@@ -286,6 +286,19 @@

#ifndef __ASSEMBLY__

+#ifdef __KERNEL__
+#define __syscall_return \
+ if (__sc_err & 0x10000000) \
+ __sc_ret = - __sc_ret;
+#else
+#define __syscall_return \
+ if (__sc_err & 0x10000000) \
+ { \
+ errno = __sc_ret; \
+ __sc_ret = -1; \
+ }
+#endif
+
/* On powerpc a system call basically clobbers the same registers like a
* function call, with the exception of LR (which is needed for the
* "sc; bnslr" sequence) and CR (where only CR0.SO is clobbered to signal
@@ -317,11 +330,7 @@
__sc_ret = __sc_3; \
__sc_err = __sc_0; \
} \
- if (__sc_err & 0x10000000) \
- { \
- errno = __sc_ret; \
- __sc_ret = -1; \
- } \
+ __syscall_return \
return (type) __sc_ret

#define __sc_loadargs_0(name, dummy...) \
Index: 2.6.6-rc3-mm2/include/asm-ppc/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-ppc/unistd.h 2004-05-05 09:33:49.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-ppc/unistd.h 2004-05-05 09:36:24.000000000 -0700
@@ -277,6 +277,19 @@

#define __NR(n) #n

+#ifdef __KERNEL__
+#define __syscall_return \
+ if (__sc_err & 0x10000000) \
+ __sc_ret = - __sc_ret;
+#else
+#define __syscall_return \
+ if (__sc_err & 0x10000000) \
+ { \
+ errno = __sc_ret; \
+ __sc_ret = -1; \
+ }
+#endif
+
/* On powerpc a system call basically clobbers the same registers like a
* function call, with the exception of LR (which is needed for the
* "sc; bnslr" sequence) and CR (where only CR0.SO is clobbered to signal
@@ -307,11 +320,7 @@
__sc_ret = __sc_3; \
__sc_err = __sc_0; \
} \
- if (__sc_err & 0x10000000) \
- { \
- errno = __sc_ret; \
- __sc_ret = -1; \
- } \
+ __syscall_return \
return (type) __sc_ret

#define __sc_loadargs_0(name, dummy...) \
Index: 2.6.6-rc3-mm2/include/asm-s390/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-s390/unistd.h 2004-05-05 09:35:45.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-s390/unistd.h 2004-05-05 09:36:24.000000000 -0700
@@ -360,6 +360,9 @@

/* user-visible error numbers are in the range -1 - -122: see <asm-s390/errno.h> */

+#ifdef __KERNEL__
+#define __syscall_return(type, res) return ((type)(res))
+#else
#define __syscall_return(type, res) \
do { \
if ((unsigned long)(res) >= (unsigned long)(-125)) { \
@@ -368,6 +371,7 @@
} \
return (type) (res); \
} while (0)
+#endif

#define _svc_clobber "1", "cc", "memory"

Index: 2.6.6-rc3-mm2/include/asm-sh/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-sh/unistd.h 2004-05-05 09:33:51.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-sh/unistd.h 2004-05-05 09:36:24.000000000 -0700
@@ -286,6 +286,9 @@

/* user-visible error numbers are in the range -1 - -124: see <asm-sh/errno.h> */

+#ifdef __KERNEL__
+#define __syscall_return(type, res) return ((type)(res))
+#else
#define __syscall_return(type, res) \
do { \
if ((unsigned long)(res) >= (unsigned long)(-124)) { \
@@ -297,6 +300,7 @@
} \
return (type) (res); \
} while (0)
+#endif

/* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */
#define _syscall0(type,name) \
Index: 2.6.6-rc3-mm2/include/asm-sparc64/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-sparc64/unistd.h 2004-05-05 09:33:53.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-sparc64/unistd.h 2004-05-05 10:02:44.000000000 -0700
@@ -303,6 +303,16 @@
* find a free slot in the 0-282 range.
*/

+#ifdef __KERNEL__
+#define __syscall_return(type, res) return ((type)(res))
+#else
+#define __syscall_return(type, res) \
+ if (res >= 0) \
+ return (type)res; \
+ errno = -res; \
+ return -1;
+#endif
+
#define _syscall0(type,name) \
type name(void) \
{ \
@@ -314,10 +324,7 @@
: "=r" (__res)\
: "r" (__g1) \
: "o0", "cc"); \
-if (__res >= 0) \
- return (type) __res; \
-errno = -__res; \
-return -1; \
+ __syscall_return(type, __res); \
}

#define _syscall1(type,name,type1,arg1) \
@@ -332,10 +339,7 @@
: "=r" (__res), "=&r" (__o0) \
: "1" (__o0), "r" (__g1) \
: "cc"); \
-if (__res >= 0) \
- return (type) __res; \
-errno = -__res; \
-return -1; \
+ __syscall_return(type, __res); \
}

#define _syscall2(type,name,type1,arg1,type2,arg2) \
@@ -351,10 +355,7 @@
: "=r" (__res), "=&r" (__o0) \
: "1" (__o0), "r" (__o1), "r" (__g1) \
: "cc"); \
-if (__res >= 0) \
- return (type) __res; \
-errno = -__res; \
-return -1; \
+ __syscall_return(type, __res); \
}

#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
@@ -371,10 +372,7 @@
: "=r" (__res), "=&r" (__o0) \
: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) \
: "cc"); \
-if (__res>=0) \
- return (type) __res; \
-errno = -__res; \
-return -1; \
+ __syscall_return(type, __res); \
}

#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
@@ -392,10 +390,7 @@
: "=r" (__res), "=&r" (__o0) \
: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__g1) \
: "cc"); \
-if (__res>=0) \
- return (type) __res; \
-errno = -__res; \
-return -1; \
+ __syscall_return(type, __res); \
}

#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
@@ -415,10 +410,7 @@
: "=r" (__res), "=&r" (__o0) \
: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__o4), "r" (__g1) \
: "cc"); \
-if (__res>=0) \
- return (type) __res; \
-errno = -__res; \
-return -1; \
+ __syscall_return(type, __res); \
}
#ifdef __KERNEL_SYSCALLS__

Index: 2.6.6-rc3-mm2/include/asm-sparc/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-sparc/unistd.h 2004-05-05 09:33:52.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-sparc/unistd.h 2004-05-05 10:02:24.000000000 -0700
@@ -302,6 +302,16 @@
* find a free slot in the 0-282 range.
*/

+#ifdef __KERNEL__
+#define __syscall_return(type, res) return ((type)(res))
+#else
+#define __syscall_return(type, res) \
+ if (res < -255 || res >= 0) \
+ return (type)res; \
+ errno = -res; \
+ return -1;
+#endif
+
#define _syscall0(type,name) \
type name(void) \
{ \
@@ -315,10 +325,7 @@
: "=r" (__res)\
: "r" (__g1) \
: "o0", "cc"); \
-if (__res < -255 || __res >= 0) \
- return (type) __res; \
-errno = -__res; \
-return -1; \
+ __syscall_return(type, __res); \
}

#define _syscall1(type,name,type1,arg1) \
@@ -335,10 +342,7 @@
: "=r" (__res), "=&r" (__o0) \
: "1" (__o0), "r" (__g1) \
: "cc"); \
-if (__res < -255 || __res >= 0) \
- return (type) __res; \
-errno = -__res; \
-return -1; \
+ __syscall_return(type, __res); \
}

#define _syscall2(type,name,type1,arg1,type2,arg2) \
@@ -356,10 +360,7 @@
: "=r" (__res), "=&r" (__o0) \
: "1" (__o0), "r" (__o1), "r" (__g1) \
: "cc"); \
-if (__res < -255 || __res >= 0) \
- return (type) __res; \
-errno = -__res; \
-return -1; \
+ __syscall_return(type, __res); \
}

#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
@@ -378,10 +379,7 @@
: "=r" (__res), "=&r" (__o0) \
: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) \
: "cc"); \
-if (__res < -255 || __res>=0) \
- return (type) __res; \
-errno = -__res; \
-return -1; \
+ __syscall_return(type, __res); \
}

#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
@@ -401,10 +399,7 @@
: "=r" (__res), "=&r" (__o0) \
: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__g1) \
: "cc"); \
-if (__res < -255 || __res>=0) \
- return (type) __res; \
-errno = -__res; \
-return -1; \
+ __syscall_return(type, __res); \
}

#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
@@ -426,10 +421,7 @@
: "=r" (__res), "=&r" (__o0) \
: "1" (__o0), "r" (__o1), "r" (__o2), "r" (__o3), "r" (__o4), "r" (__g1) \
: "cc"); \
-if (__res < -255 || __res>=0) \
- return (type) __res; \
-errno = -__res; \
-return -1; \
+ __syscall_return(type, __res); \
}
#ifdef __KERNEL_SYSCALLS__

Index: 2.6.6-rc3-mm2/include/asm-v850/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-v850/unistd.h 2004-05-05 09:33:54.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-v850/unistd.h 2004-05-05 09:36:24.000000000 -0700
@@ -245,6 +245,9 @@
#define __builtin_expect(x, expected_value) (x)
#endif

+#ifdef __KERNEL__
+#define __syscall_return(type, res) return ((type)(res))
+#else
#define __syscall_return(type, res) \
do { \
/* user-visible error numbers are in the range -1 - -124: \
@@ -255,7 +258,7 @@
} \
return (type) (res); \
} while (0)
-
+#endif

#define _syscall0(type, name) \
type name (void) \
Index: 2.6.6-rc3-mm2/include/asm-x86_64/unistd.h
===================================================================
--- 2.6.6-rc3-mm2.orig/include/asm-x86_64/unistd.h 2004-05-05 09:35:55.000000000 -0700
+++ 2.6.6-rc3-mm2/include/asm-x86_64/unistd.h 2004-05-05 09:36:24.000000000 -0700
@@ -560,6 +560,9 @@

#define __syscall_clobber "r11","rcx","memory"

+#ifdef __KERNEL__
+#define __syscall_return(type, res) return ((type)(res))
+#else
#define __syscall_return(type, res) \
do { \
if ((unsigned long)(res) >= (unsigned long)(-127)) { \
@@ -568,6 +571,7 @@
} \
return (type) (res); \
} while (0)
+#endif

#ifndef __KERNEL_SYSCALLS__

============================ snip ============================

--
I won't rest till it's the best ...
Programmer, Linux Scalability
Paul Jackson <pj@sgi.com> 1.650.933.1373