* Added clone() system call.

* Proper implementation of bits/syscalls.h, no cheating by just including
  <asm/unistd.h>.
* Proper implementation of syscall.S, it no longer contains the
  __syscall_error, instead it contains code which makes syscall(nr,...) a
  system call.
* Added sysdep.S which contains the code for __syscall_error.
* Added some macros to sysdep.h.
* Added sys/procfs.h, which is needed when compiling with thread support.
* Removed unused syscall-cris.c.

libc/sysdeps/linux/cris/Makefile

@@ -19,7 +19,7 @@ ASFLAGS=$(CFLAGS)
 CRT0=crt0.c
 CRT0_OBJ=$(patsubst %.c,%.o, $(CRT0))
 
-SSRC= setjmp.S __longjmp.S
+SSRC= setjmp.S __longjmp.S clone.S sysdep.S syscall.S
 ifeq ($(UNIFIED_SYSCALL),true)
 	SSRC += __uClibc_syscall.S
 endif
@@ -53,6 +53,7 @@ $(COBJS): %.o : %.c
 
 headers:
 	@(TOPDIR=$(TOPDIR) CC=$(CC) /bin/sh $(TOPDIR)/extra/scripts/gen_bits_syscall_h.sh > bits/syscall.h ) 
+#	cd $(TOPDIR)/include/sys && ln -fs ../../libc/sysdeps/linux/m68k/reg.h .
 
 clean:
 	rm -f *.[oa] *~ core

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

@@ -1,10 +1,159 @@
-/*
+#ifndef _BITS_SYSCALLS_H
- * nothing needed here until we want pthread support or similar
+#define _BITS_SYSCALLS_H
- */
 
-#include <features.h>
+#ifndef _SYSCALL_H
-/* Do something very evil for now.  Until we include our out syscall
+#error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."
- * macros, short circuit bits/syscall.h  and use asm/unistd.h instead */
+#endif
-#define _BITS_SYSCALL_H
-#include <asm/unistd.h>
 
+/* Include the __NR_<name> definitions. */
+#include <bits/syscall.h>
+
+#if 0
+#ifndef __set_errno
+#define __set_errno(val) (*__errno_location()) = (val)
+#endif
+#endif
+
+#undef SYS_ify
+#define SYS_ify(syscall_name)   (__NR_##syscall_name)
+
+#ifndef __ASSEMBLER__
+
+#undef _syscall0
+#define _syscall0(type,name) \
+type name(void) \
+{ \
+return (type) (INLINE_SYSCALL(name, 0)); \
+}
+
+#undef _syscall1
+#define _syscall1(type,name,type1,arg1) \
+type name(type1 arg1) \
+{ \
+return (type) (INLINE_SYSCALL(name, 1, arg1)); \
+}
+
+#undef _syscall2
+#define _syscall2(type,name,type1,arg1,type2,arg2) \
+type name(type1 arg1,type2 arg2) \
+{ \
+return (type) (INLINE_SYSCALL(name, 2, arg1, arg2)); \
+}
+
+#undef _syscall3
+#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
+type name(type1 arg1,type2 arg2,type3 arg3) \
+{ \
+return (type) (INLINE_SYSCALL(name, 3, arg1, arg2, arg3)); \
+}
+
+#undef _syscall4
+#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
+type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
+{ \
+return (type) (INLINE_SYSCALL(name, 4, arg1, arg2, arg3, arg4)); \
+} 
+
+#undef _syscall5
+#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
+          type5,arg5) \
+type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
+{ \
+return (type) (INLINE_SYSCALL(name, 5, arg1, arg2, arg3, arg4, arg5)); \
+}
+
+#undef INLINE_SYSCALL
+#define INLINE_SYSCALL(name, nr, args...)	\
+  ({						\
+     unsigned long __sys_res;			\
+     register unsigned long __res asm ("r10");	\
+     LOAD_ARGS_c_##nr (args)			\
+     register unsigned long __callno asm ("r9")	\
+       = SYS_ify (name);			\
+     asm volatile (LOAD_ARGS_asm_##nr (args)	\
+		   CHECK_ARGS_asm_##nr		\
+		   "break 13"			\
+		   : "=r" (__res)		\
+		   : ASM_ARGS_##nr (args)	\
+		   : ASM_CLOBBER_##nr);		\
+     __sys_res = __res;				\
+						\
+     if (__sys_res >= (unsigned long) -4096)	\
+       {					\
+	 __set_errno (- __sys_res);		\
+	 __sys_res = (unsigned long) -1;	\
+       }					\
+     __sys_res;					\
+   })
+
+#define LOAD_ARGS_c_0()
+#define LOAD_ARGS_asm_0()
+#define ASM_CLOBBER_0 "memory"
+#define ASM_ARGS_0() "r" (__callno)
+#define CHECK_ARGS_asm_0
+
+#define LOAD_ARGS_c_1(r10) \
+	LOAD_ARGS_c_0()						\
+	register unsigned long __r10 __asm__ ("r10") = (unsigned long) (r10);
+#define LOAD_ARGS_asm_1(r10) LOAD_ARGS_asm_0 ()
+#define ASM_CLOBBER_1 ASM_CLOBBER_0
+#define ASM_ARGS_1(r10) ASM_ARGS_0 (), "0" (__r10)
+#define CHECK_ARGS_asm_1			\
+	".ifnc %0,$r10\n\t"			\
+	".err\n\t"				\
+	".endif\n\t"
+
+#define LOAD_ARGS_c_2(r10, r11) \
+	LOAD_ARGS_c_1(r10)					\
+	register unsigned long __r11 __asm__ ("r11") = (unsigned long) (r11);
+#define LOAD_ARGS_asm_2(r10, r11) LOAD_ARGS_asm_1 (r10)
+#define ASM_CLOBBER_2 ASM_CLOBBER_1
+#define ASM_ARGS_2(r10, r11) ASM_ARGS_1 (r10), "r" (__r11)
+#define CHECK_ARGS_asm_2			\
+	".ifnc %0-%3,$r10-$r11\n\t"		\
+	".err\n\t"				\
+	".endif\n\t"
+
+#define LOAD_ARGS_c_3(r10, r11, r12) \
+	LOAD_ARGS_c_2(r10, r11)					\
+	register unsigned long __r12 __asm__ ("r12") = (unsigned long) (r12);
+#define LOAD_ARGS_asm_3(r10, r11, r12) LOAD_ARGS_asm_2 (r10, r11)
+#define ASM_CLOBBER_3 ASM_CLOBBER_2
+#define ASM_ARGS_3(r10, r11, r12) ASM_ARGS_2 (r10, r11), "r" (__r12)
+#define CHECK_ARGS_asm_3			\
+	".ifnc %0-%3-%4,$r10-$r11-$r12\n\t"	\
+	".err\n\t"				\
+	".endif\n\t"
+
+#define LOAD_ARGS_c_4(r10, r11, r12, r13) \
+	LOAD_ARGS_c_3(r10, r11, r12)				\
+	register unsigned long __r13 __asm__ ("r13") = (unsigned long) (r13);
+#define LOAD_ARGS_asm_4(r10, r11, r12, r13) LOAD_ARGS_asm_3 (r10, r11, r12)
+#define ASM_CLOBBER_4 ASM_CLOBBER_3
+#define ASM_ARGS_4(r10, r11, r12, r13) ASM_ARGS_3 (r10, r11, r12), "r" (__r13)
+#define CHECK_ARGS_asm_4				\
+	".ifnc %0-%3-%4-%5,$r10-$r11-$r12-$r13\n\t"	\
+	".err\n\t"					\
+	".endif\n\t"
+
+#define LOAD_ARGS_c_5(r10, r11, r12, r13, mof) \
+	LOAD_ARGS_c_4(r10, r11, r12, r13)
+#define LOAD_ARGS_asm_5(r10, r11, r12, r13, mof) \
+	LOAD_ARGS_asm_4 (r10, r11, r12, r13) "move %6,$mof\n\t"
+#define ASM_CLOBBER_5 ASM_CLOBBER_4
+#define ASM_ARGS_5(r10, r11, r12, r13, mof) \
+	ASM_ARGS_4 (r10, r11, r12, r13), "g" (mof)
+#define CHECK_ARGS_asm_5 CHECK_ARGS_asm_4
+
+#define LOAD_ARGS_c_6(r10, r11, r12, r13, mof, srp)		\
+	LOAD_ARGS_c_5(r10, r11, r12, r13, mof)
+#define LOAD_ARGS_asm_6(r10, r11, r12, r13, mof, srp)		\
+	LOAD_ARGS_asm_5(r10, r11, r12, r13, mof)		\
+	"move %7,$srp\n\t"
+#define ASM_CLOBBER_6 ASM_CLOBBER_5, "srp"
+#define ASM_ARGS_6(r10, r11, r12, r13, mof, srp) \
+	ASM_ARGS_5 (r10, r11, r12, r13, mof), "g" (srp)
+#define CHECK_ARGS_asm_6 CHECK_ARGS_asm_5
+
+#endif /* not __ASSEMBLER__ */
+#endif /* _BITS_SYSCALLS_H */

libc/sysdeps/linux/cris/clone.S

@@ -0,0 +1,89 @@
+/* Copyright (C) 2001 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <asm/errno.h>
+#include <sys/syscall.h>
+#include <sysdep.h>
+
+/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */
+
+	.syntax no_register_prefix
+
+        .text
+ENTRY (__clone)
+	/* Sanity check arguments: No NULL function pointers.  Allow a NULL
+	   stack pointer though; it makes the kernel allocate stack.  */
+	test.d	r10
+	beq	1f
+	nop
+
+	/* We need to muck with a few registers.  */
+	movem	r1,[sp=sp-8]
+
+	/* Save the function pointer and argument.  We can't save them
+	   onto the new stack since it can be NULL.  */
+	move.d	r10,r0
+	move.d	r13,r1
+
+        /* Move the other arguments into place for the system call.  */
+	move.d	r11,r10
+	move.d	r12,r11
+
+	/* Do the system call.  */
+	movu.w	SYS_ify (clone),r9
+	break	13
+	test.d	r10
+	beq	.Lthread_start
+	nop
+
+	/* Jump to error handler if we get (unsigned) -4096 .. 0xffffffff.  */
+	cmps.w	-4096,r10
+	bhs	0f
+	movem	[sp+],r1
+
+	/* In parent, successful return.  (Avoid using "ret" - it's a macro.)  */
+	Ret
+	nop
+
+.Lthread_start:
+	/* Terminate frame pointers here.  */
+	moveq	0,r8
+
+	/* I've told you once.  */
+	move.d	r1,r10
+	jsr	r0
+
+	SETUP_PIC
+	PLTCALL	(_exit)
+
+	/* Die horribly.  */
+	test.d	[6809]
+
+	/* Stop the unstoppable.  */
+9:
+	ba	9b
+	nop
+
+/* Local error handler.  */
+1:
+	movs.w	-EINVAL,r10
+	/* Drop through into the ordinary error handler.  */
+PSEUDO_END (__clone)
+
+.globl clone
+	clone = __clone

libc/sysdeps/linux/cris/sys/procfs.h

@@ -0,0 +1,115 @@
+/* Copyright (C) 1996, 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _SYS_PROCFS_H
+#define _SYS_PROCFS_H	1
+
+/* This is somehow modelled after the file of the same name on SysVr4
+   systems.  It provides a definition of the core file format for ELF
+   used on Linux.  */
+
+#include <features.h>
+#include <signal.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/ucontext.h>
+#include <sys/user.h>
+#include <asm/elf.h>
+
+__BEGIN_DECLS
+
+struct elf_siginfo
+  {
+    int si_signo;			/* Signal number.  */
+    int si_code;			/* Extra code.  */
+    int si_errno;			/* Errno.  */
+  };
+
+/* Definitions to generate Intel SVR4-like core files.  These mostly
+   have the same names as the SVR4 types with "elf_" tacked on the
+   front to prevent clashes with linux definitions, and the typedef
+   forms have been avoided.  This is mostly like the SVR4 structure,
+   but more Linuxy, with things that Linux does not support and which
+   gdb doesn't really use excluded.  Fields present but not used are
+   marked with "XXX".  */
+struct elf_prstatus
+  {
+#if 0
+    long int pr_flags;			/* XXX Process flags.  */
+    short int pr_why;			/* XXX Reason for process halt.  */
+    short int pr_what;			/* XXX More detailed reason.  */
+#endif
+    struct elf_siginfo pr_info;		/* Info associated with signal.  */
+    short int pr_cursig;		/* Current signal.  */
+    unsigned long int pr_sigpend;	/* Set of pending signals.  */
+    unsigned long int pr_sighold;	/* Set of held signals.  */
+#if 0
+    struct sigaltstack pr_altstack;	/* Alternate stack info.  */
+    struct sigaction pr_action;		/* Signal action for current sig.  */
+#endif
+    __pid_t pr_pid;
+    __pid_t pr_ppid;
+    __pid_t pr_pgrp;
+    __pid_t pr_sid;
+    struct timeval pr_utime;		/* User time.  */
+    struct timeval pr_stime;		/* System time.  */
+    struct timeval pr_cutime;		/* Cumulative user time.  */
+    struct timeval pr_cstime;		/* Cumulative system time.  */
+#if 0
+    long int pr_instr;			/* Current instruction.  */
+#endif
+    elf_gregset_t pr_reg;		/* GP registers.  */
+    int pr_fpvalid;			/* True if math copro being used.  */
+  };
+
+
+#define ELF_PRARGSZ     (80)    /* Number of chars for args */
+
+struct elf_prpsinfo
+  {
+    char pr_state;			/* Numeric process state.  */
+    char pr_sname;			/* Char for pr_state.  */
+    char pr_zomb;			/* Zombie.  */
+    char pr_nice;			/* Nice val.  */
+    unsigned long int pr_flag;		/* Flags.  */
+    unsigned short int pr_uid;
+    unsigned short int pr_gid;
+    int pr_pid, pr_ppid, pr_pgrp, pr_sid;
+    /* Lots missing */
+    char pr_fname[16];			/* Filename of executable.  */
+    char pr_psargs[ELF_PRARGSZ];	/* Initial part of arg list.  */
+  };
+
+/* Addresses.  */
+typedef void *psaddr_t;
+
+/* Register sets.  Linux has different names.  */
+typedef gregset_t prgregset_t;
+typedef fpregset_t prfpregset_t;
+
+/* We don't have any differences between processes and threads,
+   therefore habe only ine PID type.  */
+typedef __pid_t lwpid_t;
+
+
+typedef struct elf_prstatus prstatus_t;
+typedef struct elf_prpsinfo prpsinfo_t;
+
+__END_DECLS
+
+#endif	/* sys/procfs.h */

libc/sysdeps/linux/cris/syscall-cris.c

@@ -1,41 +0,0 @@
-/* syscall.c - generalized linux system call interface */
-
-#include <stdarg.h>
-#include <syscall.h>
-#include <errno.h>
-
-/* perform a Linux/CRIS system call with variable number of arguments
- * put them and the syscall number in the right registers and call
- * break 13.
- */
-
-int
-syscall(int number, ...)
-{
-	register long __a __asm__ ("r10");
-	register long __b __asm__ ("r11");
-	register long __c __asm__ ("r12");
-	register long __d __asm__ ("r13");
-	register long __e __asm__ ("r0");
-        va_list args;
-
-        va_start(args, number);
-        __a = va_arg(args, int);
-        __b = va_arg(args, int);
-        __c = va_arg(args, int);
-        __d = va_arg(args, int);
-        __e = va_arg(args, int);
-        va_end(args);
-
-        __asm__ volatile ("movu.w %1,$r9\n\tbreak 13\n\t"
-                : "=r" (__a)
-                : "g" (number), "0" (__a), "r" (__b), "r" (__c), "r" (__d),
-                          "r" (__e)
-                : "r10", "r9");
-
-        if (__a >= 0)
-		return __a;
-
-	errno = -__a;
-        return -1;
-}

libc/sysdeps/linux/cris/syscall.S

@@ -1,18 +1,40 @@
-#include <sys/syscall.h>
+/* Copyright (C) 2001 Free Software Foundation, Inc.
-	
+   This file is part of the GNU C Library.
-        .globl __syscall_error
-__syscall_error:
-                        
-        neg.d $r10,$r10
 
-        push $r10
+   The GNU C Library is free software; you can redistribute it and/or
-        push $srp
+   modify it under the terms of the GNU Library General Public License as
-        jsr __errno_location
+   published by the Free Software Foundation; either version 2 of the
-        pop $srp
+   License, or (at your option) any later version.
-        pop $r11
-        move.d $r11,[$r10]
 
-        moveq -1, $r10
+   The GNU C Library is distributed in the hope that it will be useful,
-        ret
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
-        nop
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
 
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sysdep.h>
+
+	.syntax no_register_prefix
+
+/* Make syscall (callno, ...) into a system call.  */
+
+ENTRY (syscall)
+	move.d	r10,r9
+	move.d	r11,r10
+	move.d	r12,r11
+	move.d	r13,r12
+	move.d	[sp],r13
+	move	srp,[sp]
+	move	[sp+4],mof
+	move	[sp+8],srp
+	break	13
+	cmps.w	-4096,r10
+	bhs	0f
+	move	[sp],srp
+	Ret
+	nop
+PSEUDO_END (syscall)

libc/sysdeps/linux/cris/sysdep.S

@@ -0,0 +1,77 @@
+/* Copyright (C) 2001 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 Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sysdep.h>
+
+/* Make space for the errno variable.  */
+
+	.globl	C_SYMBOL_NAME(errno)
+	.type	C_SYMBOL_NAME(errno),@object
+	.lcomm	C_SYMBOL_NAME(errno),4
+
+	errno = _errno
+
+	/* weak_alias (errno, _errno) */
+
+
+/* The syscall stubs jump here when they detect an error, bot for PIC and
+   non-PIC.  */
+
+	.syntax	no_register_prefix
+
+ENTRY (__syscall_error)
+	neg.d	r10,r10
+
+#ifdef	_LIBC_REENTRANT
+	push	r10
+	push	srp
+
+	/* Note that __syscall_error is only visible within this library,
+	   and no-one passes it on as a pointer, so can assume that R0 (GOT
+	   pointer) is correctly set up.  */
+	PLTCALL	(__errno_location)
+
+	pop	srp
+	pop	r11
+	move.d	r11,[r10]
+
+#else /* not _LIBC_REENTRANT */
+# ifdef __PIC__
+	move.d	[r0+C_SYMBOL_NAME(errno:GOT)],r9
+	move.d  r10,[r9]
+# else
+	move.d	r10,[C_SYMBOL_NAME(errno)]
+# endif
+#endif /* _LIBC_REENTRANT */
+
+#ifdef __PIC__
+/* PIC callers are supposed to have R0 on stack, ready for us to restore.
+   Callers are only allowed from within this DSO, so the GOT in r0 is the
+   one we want to use.
+
+   (Don't use "ret" - it's a macro).   */
+
+	moveq	-1,r10
+	Ret
+	pop	r0
+#else
+	Ret
+	moveq	-1,r10
+#endif
+
+END (__syscall_error)

libc/sysdeps/linux/cris/sysdep.h

@@ -91,6 +91,22 @@
 #define END(name) \
   ASM_SIZE_DIRECTIVE (C_SYMBOL_NAME (name))
 
+#define PSEUDO(name, syscall_name, args) \
+  ENTRY (name)                      @ \
+  DOARGS_##args                     @ \
+  movu.w SYS_ify (syscall_name),$r9         @ \
+  break 13                      @ \
+  cmps.w -4096,$r10                 @ \
+  bhs   0f                      @ \
+  nop                           @ \
+  UNDOARGS_return_##args
+
+#define PSEUDO_END(name) \
+0:                          @ \
+  SETUP_PIC                     @ \
+  PLTJUMP (syscall_error)               @ \
+  END (name)
+
 /* If compiled for profiling, call `mcount' at the start of each function.
    FIXME: Note that profiling is not actually implemented.  This is just
    example code which might not even compile, though it is believed to be