Implement syscall() for powerpc. Fixup syscall code so

it compiles properly with gcc 3.3.
 -Erik

ldso/ldso/powerpc/dl-syscalls.h

@@ -32,7 +32,8 @@
 
 #undef __syscall_clobbers
 #define __syscall_clobbers \
-	"r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+	"r9", "r10", "r11", "r12"
+	//"r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
 
 #undef _syscall0
 #define _syscall0(type,name)						\
@@ -49,7 +50,7 @@ type name(void)								\
 			 "mfcr %1      "				\
 			: "=&r" (__sc_3), "=&r" (__sc_0)		\
 			: "0"   (__sc_3), "1"   (__sc_0)		\
-			: __syscall_clobbers);				\
+			: "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12" ); \
 		__sc_ret = __sc_3;					\
 		__sc_err = __sc_0;					\
 	}								\
@@ -72,7 +73,7 @@ type name(type1 arg1)							\
 			 "mfcr %1      "				\
 			: "=&r" (__sc_3), "=&r" (__sc_0)		\
 			: "0"   (__sc_3), "1"   (__sc_0)		\
-			: __syscall_clobbers);				\
+			: "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12" ); \
 		__sc_ret = __sc_3;					\
 		__sc_err = __sc_0;					\
 	}								\
@@ -98,7 +99,7 @@ type name(type1 arg1, type2 arg2)					\
 			: "=&r" (__sc_3), "=&r" (__sc_0)		\
 			: "0"   (__sc_3), "1"   (__sc_0),		\
 			  "r"   (__sc_4)				\
-			: __syscall_clobbers);				\
+			: "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12" ); \
 		__sc_ret = __sc_3;					\
 		__sc_err = __sc_0;					\
 	}								\
@@ -127,7 +128,7 @@ type name(type1 arg1, type2 arg2, type3 arg3)				\
 			: "0"   (__sc_3), "1"   (__sc_0),		\
 			  "r"   (__sc_4),				\
 			  "r"   (__sc_5)				\
-			: __syscall_clobbers);				\
+			: "r6", "r7", "r8", "r9", "r10", "r11", "r12" ); \
 		__sc_ret = __sc_3;					\
 		__sc_err = __sc_0;					\
 	}								\
@@ -159,7 +160,7 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4)		\
 			  "r"   (__sc_4),				\
 			  "r"   (__sc_5),				\
 			  "r"   (__sc_6)				\
-			: __syscall_clobbers);				\
+			: "r7", "r8", "r9", "r10", "r11", "r12" );	\
 		__sc_ret = __sc_3;					\
 		__sc_err = __sc_0;					\
 	}								\
@@ -194,7 +195,7 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5)	\
 			  "r"   (__sc_5),				\
 			  "r"   (__sc_6),				\
 			  "r"   (__sc_7)				\
-			: __syscall_clobbers);				\
+			: "r8", "r9", "r10", "r11", "r12" );		\
 		__sc_ret = __sc_3;					\
 		__sc_err = __sc_0;					\
 	}								\
@@ -233,7 +234,7 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6
 			  "r"   (__sc_6),				\
 			  "r"   (__sc_7),				\
 			  "r"   (__sc_8)				\
-			: __syscall_clobbers);				\
+			: "r9", "r10", "r11", "r12" );			\
 		__sc_ret = __sc_3;					\
 		__sc_err = __sc_0;					\
 	}								\

ldso/ldso/powerpc/ld_syscalls.h

@@ -32,7 +32,8 @@
 
 #undef __syscall_clobbers
 #define __syscall_clobbers \
-	"r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+	"r9", "r10", "r11", "r12"
+	//"r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
 
 #undef _syscall0
 #define _syscall0(type,name)						\
@@ -49,7 +50,7 @@ type name(void)								\
 			 "mfcr %1      "				\
 			: "=&r" (__sc_3), "=&r" (__sc_0)		\
 			: "0"   (__sc_3), "1"   (__sc_0)		\
-			: __syscall_clobbers);				\
+			: "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12" ); \
 		__sc_ret = __sc_3;					\
 		__sc_err = __sc_0;					\
 	}								\
@@ -72,7 +73,7 @@ type name(type1 arg1)							\
 			 "mfcr %1      "				\
 			: "=&r" (__sc_3), "=&r" (__sc_0)		\
 			: "0"   (__sc_3), "1"   (__sc_0)		\
-			: __syscall_clobbers);				\
+			: "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12" ); \
 		__sc_ret = __sc_3;					\
 		__sc_err = __sc_0;					\
 	}								\
@@ -98,7 +99,7 @@ type name(type1 arg1, type2 arg2)					\
 			: "=&r" (__sc_3), "=&r" (__sc_0)		\
 			: "0"   (__sc_3), "1"   (__sc_0),		\
 			  "r"   (__sc_4)				\
-			: __syscall_clobbers);				\
+			: "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12" ); \
 		__sc_ret = __sc_3;					\
 		__sc_err = __sc_0;					\
 	}								\
@@ -127,7 +128,7 @@ type name(type1 arg1, type2 arg2, type3 arg3)				\
 			: "0"   (__sc_3), "1"   (__sc_0),		\
 			  "r"   (__sc_4),				\
 			  "r"   (__sc_5)				\
-			: __syscall_clobbers);				\
+			: "r6", "r7", "r8", "r9", "r10", "r11", "r12" ); \
 		__sc_ret = __sc_3;					\
 		__sc_err = __sc_0;					\
 	}								\
@@ -159,7 +160,7 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4)		\
 			  "r"   (__sc_4),				\
 			  "r"   (__sc_5),				\
 			  "r"   (__sc_6)				\
-			: __syscall_clobbers);				\
+			: "r7", "r8", "r9", "r10", "r11", "r12" );	\
 		__sc_ret = __sc_3;					\
 		__sc_err = __sc_0;					\
 	}								\
@@ -194,7 +195,7 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5)	\
 			  "r"   (__sc_5),				\
 			  "r"   (__sc_6),				\
 			  "r"   (__sc_7)				\
-			: __syscall_clobbers);				\
+			: "r8", "r9", "r10", "r11", "r12" );		\
 		__sc_ret = __sc_3;					\
 		__sc_err = __sc_0;					\
 	}								\
@@ -233,7 +234,7 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6
 			  "r"   (__sc_6),				\
 			  "r"   (__sc_7),				\
 			  "r"   (__sc_8)				\
-			: __syscall_clobbers);				\
+			: "r9", "r10", "r11", "r12" );			\
 		__sc_ret = __sc_3;					\
 		__sc_err = __sc_0;					\
 	}								\

libc/sysdeps/linux/powerpc/Makefile

@@ -24,7 +24,8 @@ CRT0_SRC = crt0.S
 CRT0_OBJ = crt0.o crt1.o gcrt1.o
 CRT0_DEPS=gmon-start.S
 
-SSRC=__longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S brk.S clone.S __uClibc_syscall.S
+SSRC=__longjmp.S setjmp.S bsd-setjmp.S bsd-_setjmp.S brk.S \
+	clone.S __uClibc_syscall.S syscall.S
 ifeq ($(strip $(UCLIBC_PROFILING)),y)
 SSRC+=mcount.S
 endif

libc/sysdeps/linux/powerpc/_mmap.c

@@ -5,7 +5,7 @@
 #include <sys/syscall.h>
 
 #define __syscall_clobbers \
-	"r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "r12"
+	"r9", "r10", "r11", "r12"
 #define __syscall_return(type) \
 	return (__sc_err & 0x10000000 ? errno = __sc_ret, __sc_ret = -1 : 0), \
 	       (type) __sc_ret

libc/sysdeps/linux/powerpc/bits/syscalls.h

@@ -11,30 +11,31 @@
 #include <bits/sysnum.h>
 
 
-#define STRINGIFY(s) STRINGIFY2 (s)
-#define STRINGIFY2(s) #s
+#define __STRINGIFY(s) __STRINGIFY2 (s)
+#define __STRINGIFY2(s) #s
 
+#undef JUMPTARGET
 #ifdef __PIC__
-#define JUMPTARGET(name) STRINGIFY(name##@plt)
+#define __MAKE_SYSCALL	__STRINGIFY(__uClibc_syscall@plt)
 #else
-#define JUMPTARGET(name) STRINGIFY(name)
+#define __MAKE_SYSCALL	__STRINGIFY(__uClibc_syscall)
 #endif
 
 #define unified_syscall_body(name)			\
 	__asm__ (					\
 	".section \".text\"\n\t"			\
 	".align 2\n\t"					\
-	".globl " STRINGIFY(name) "\n\t"				\
-	".type " STRINGIFY(name) ",@function\n"			\
-	#name":\n\tli 0," STRINGIFY(__NR_##name) "\n\t"	\
-	"b " JUMPTARGET(__uClibc_syscall) "\n"		\
-	".Lfe1" STRINGIFY(name) ":\n\t"				\
-	".size\t" STRINGIFY(name) ",.Lfe1" STRINGIFY(name) "-" STRINGIFY(name) "\n"	\
+	".globl " __STRINGIFY(name) "\n\t"		\
+	".type " __STRINGIFY(name) ",@function\n\t"	\
+	#name":\n\tli 0," __STRINGIFY(__NR_##name) "\n\t"	\
+	"b " __MAKE_SYSCALL "\n\t"		\
+	".Lfe1" __STRINGIFY(name) ":\n\t"			\
+	".size\t" __STRINGIFY(name) ",.Lfe1" __STRINGIFY(name) "-" __STRINGIFY(name) "\n"	\
 	)
 
 #undef _syscall0
-#define _syscall0(type,name)						\
-type name(void);							\
+#define _syscall0(type,name)				\
+type name(void);					\
 unified_syscall_body(name)
 
 #undef _syscall1

libc/sysdeps/linux/powerpc/syscall.S

@@ -0,0 +1,45 @@
+/* Copyright (C) 1991, 1992, 1997, 1999 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <features.h>
+
+	.section ".text"
+	.globl	syscall;
+	.type	syscall,@function;
+	.align  2;
+
+.globl syscall;
+.type syscall,@function;
+.align 2;
+
+syscall:
+	mr 0,3
+	mr 3,4
+	mr 4,5
+	mr 5,6
+	mr 6,7
+	mr 7,8
+	sc
+	bnslr;
+#ifdef __PIC__
+	b __syscall_error@plt
+#else
+	b __syscall_error
+#endif
+
+.size syscall,.-syscall