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-rw-r--r--libc/sysdeps/linux/mips/Makefile.arch8
-rw-r--r--libc/sysdeps/linux/mips/clone.S2
-rw-r--r--libc/sysdeps/linux/mips/sys/asm.h16
-rw-r--r--libc/sysdeps/linux/mips/sys/regdef.h2
-rw-r--r--libc/sysdeps/linux/mips/syscall_error.S82
-rw-r--r--libc/sysdeps/linux/mips/sysdep.h54
-rw-r--r--libc/sysdeps/linux/mips/vfork.S97
7 files changed, 259 insertions, 2 deletions
diff --git a/libc/sysdeps/linux/mips/Makefile.arch b/libc/sysdeps/linux/mips/Makefile.arch
index 2570a6988..73e64991c 100644
--- a/libc/sysdeps/linux/mips/Makefile.arch
+++ b/libc/sysdeps/linux/mips/Makefile.arch
@@ -7,11 +7,15 @@
CSRC := \
__longjmp.c brk.c setjmp_aux.c mmap.c __syscall_error.c \
- cacheflush.c pread_write.c sysmips.c _test_and_set.c sigaction.c \
+ cacheflush.c pread_write.c sysmips.c _test_and_set.c \
readahead.c
ifeq ($(UCLIBC_HAS_ADVANCED_REALTIME),y)
- CSRC += posix_fadvise.c posix_fadvise64.c
+CSRC += posix_fadvise.c posix_fadvise64.c
+endif
+
+ifneq ($(UCLIBC_HAS_THREADS_NATIVE),y)
+CSRC += sigaction.c
endif
SSRC := bsd-_setjmp.S bsd-setjmp.S setjmp.S clone.S syscall.S pipe.S
diff --git a/libc/sysdeps/linux/mips/clone.S b/libc/sysdeps/linux/mips/clone.S
index 15fa29558..52b81cb1e 100644
--- a/libc/sysdeps/linux/mips/clone.S
+++ b/libc/sysdeps/linux/mips/clone.S
@@ -132,3 +132,5 @@ L(__thread_start):
jal _exit
#endif
.end __thread_start
+weak_alias(clone, __clone)
+
diff --git a/libc/sysdeps/linux/mips/sys/asm.h b/libc/sysdeps/linux/mips/sys/asm.h
index 79d143975..d424ed3b1 100644
--- a/libc/sysdeps/linux/mips/sys/asm.h
+++ b/libc/sysdeps/linux/mips/sys/asm.h
@@ -472,4 +472,20 @@ symbol = value
# define MTC0 dmtc0
#endif
+/* The MIPS archtectures do not have a uniform memory model. Particular
+ platforms may provide additional guarantees - for instance, the R4000
+ LL and SC instructions implicitly perform a SYNC, and the 4K promises
+ strong ordering.
+
+ However, in the absence of those guarantees, we must assume weak ordering
+ and SYNC explicitly where necessary.
+
+ Some obsolete MIPS processors may not support the SYNC instruction. This
+ applies to "true" MIPS I processors; most of the processors which compile
+ using MIPS I implement parts of MIPS II. */
+
+#ifndef MIPS_SYNC
+# define MIPS_SYNC sync
+#endif
+
#endif /* sys/asm.h */
diff --git a/libc/sysdeps/linux/mips/sys/regdef.h b/libc/sysdeps/linux/mips/sys/regdef.h
index 9d2c4c1c4..2d94130af 100644
--- a/libc/sysdeps/linux/mips/sys/regdef.h
+++ b/libc/sysdeps/linux/mips/sys/regdef.h
@@ -20,6 +20,8 @@
#ifndef _SYS_REGDEF_H
#define _SYS_REGDEF_H
+#include <sgidefs.h>
+
/*
* Symbolic register names for 32 bit ABI
*/
diff --git a/libc/sysdeps/linux/mips/syscall_error.S b/libc/sysdeps/linux/mips/syscall_error.S
new file mode 100644
index 000000000..c96b6ed12
--- /dev/null
+++ b/libc/sysdeps/linux/mips/syscall_error.S
@@ -0,0 +1,82 @@
+/* Copyright (C) 1992, 1993, 1994, 1997, 1998, 1999, 2000, 2002, 2003
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Brendan Kehoe (brendan@zen.org).
+
+ 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 <sys/asm.h>
+#include <sysdep.h>
+#include <bits/errno.h>
+
+#ifdef __UCLIBC_HAS_THREADS__
+
+LOCALSZ= 3
+FRAMESZ= (((NARGSAVE+LOCALSZ)*SZREG)+ALSZ)&ALMASK
+RAOFF= FRAMESZ-(1*SZREG)
+GPOFF= FRAMESZ-(2*SZREG)
+V0OFF= FRAMESZ-(3*SZREG)
+
+ENTRY(__syscall_error)
+#ifdef __PIC__
+ .set noat
+ SETUP_GPX (AT)
+ .set at
+#endif
+ PTR_SUBU sp, FRAMESZ
+ .set noat
+ SETUP_GPX64(GPOFF,AT)
+ .set at
+#ifdef __PIC__
+ SAVE_GP(GPOFF)
+#endif
+ REG_S v0, V0OFF(sp)
+ REG_S ra, RAOFF(sp)
+
+ /* Find our per-thread errno address */
+ jal __errno_location
+
+ /* Store the error value. */
+ REG_L t0, V0OFF(sp)
+ sw t0, 0(v0)
+
+ /* And just kick back a -1. */
+ REG_L ra, RAOFF(sp)
+ RESTORE_GP64
+ PTR_ADDU sp, FRAMESZ
+ li v0, -1
+ j ra
+ END(__syscall_error)
+
+#else /* __UCLIBC_HAS_THREADS__ */
+
+
+ENTRY(__syscall_error)
+#ifdef __PIC__
+ SETUP_GPX (AT)
+#endif
+ SETUP_GPX64 (t9, AT)
+
+ /* Store it in errno... */
+ sw v0, errno
+
+ /* And just kick back a -1. */
+ li v0, -1
+
+ RESTORE_GP64
+ j ra
+ END(__syscall_error)
+#endif /* __UCLIBC_HAS_THREADS__ */
diff --git a/libc/sysdeps/linux/mips/sysdep.h b/libc/sysdeps/linux/mips/sysdep.h
new file mode 100644
index 000000000..38d4ce903
--- /dev/null
+++ b/libc/sysdeps/linux/mips/sysdep.h
@@ -0,0 +1,54 @@
+/* Adapted from glibc's sysdeps/unix/mips/sysdep.h */
+
+/* Copyright (C) 1992, 1995, 1997, 1999, 2000, 2002, 2003
+ Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Brendan Kehoe (brendan@zen.org).
+
+ 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>
+
+#if __UCLIBC_HAS_THREADS_NATIVE__
+#include_next <sysdep.h>
+
+#else
+
+#ifdef __ASSEMBLER__
+
+#include <sgidefs.h>
+#include <sys/regdef.h>
+
+#define ENTRY(name) \
+ .globl name; \
+ .align 2; \
+ .ent name,0; \
+ name##:
+
+#undef END
+#define END(function) \
+ .end function; \
+ .size function,.-function
+
+#if _MIPS_SIM == _ABIO32
+# define L(label) $L ## label
+#else
+# define L(label) .L ## label
+#endif
+
+#endif
+
+#endif /* __UCLIBC_HAS_THREADS_NATIVE__ */
diff --git a/libc/sysdeps/linux/mips/vfork.S b/libc/sysdeps/linux/mips/vfork.S
new file mode 100644
index 000000000..8400df052
--- /dev/null
+++ b/libc/sysdeps/linux/mips/vfork.S
@@ -0,0 +1,97 @@
+/* Copyright (C) 2005 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. */
+
+/* vfork() is just a special case of clone(). */
+
+#include <sys/asm.h>
+#include <sysdep.h>
+
+#ifndef SAVE_PID
+#define SAVE_PID
+#endif
+
+#ifndef RESTORE_PID
+#define RESTORE_PID
+#endif
+
+
+/* int vfork() */
+
+ .text
+LOCALSZ= 1
+FRAMESZ= (((NARGSAVE+LOCALSZ)*SZREG)+ALSZ)&ALMASK
+GPOFF= FRAMESZ-(1*SZREG)
+NESTED(__vfork,FRAMESZ,sp)
+#ifdef __PIC__
+ SETUP_GP
+#endif
+ PTR_SUBU sp, FRAMESZ
+ SETUP_GP64 (a5, __vfork)
+#ifdef __PIC__
+ SAVE_GP (GPOFF)
+#endif
+#ifdef PROF
+# if (_MIPS_SIM != _ABIO32)
+ PTR_S a5, GPOFF(sp)
+# endif
+ .set noat
+ move $1, ra
+# if (_MIPS_SIM == _ABIO32)
+ subu sp,sp,8
+# endif
+ jal _mcount
+ .set at
+# if (_MIPS_SIM != _ABIO32)
+ PTR_L a5, GPOFF(sp)
+# endif
+#endif
+
+ PTR_ADDU sp, FRAMESZ
+
+ SAVE_PID
+
+ li a0, 0x4112 /* CLONE_VM | CLONE_VFORK | SIGCHLD */
+ move a1, sp
+
+ /* Do the system call */
+ li v0,__NR_clone
+ syscall
+
+ RESTORE_PID
+
+ bnez a3,L(error)
+
+ /* Successful return from the parent or child. */
+ RESTORE_GP64
+ j ra
+ nop
+
+ /* Something bad happened -- no child created. */
+L(error):
+#ifdef __PIC__
+ PTR_LA t9, __syscall_error
+ RESTORE_GP64
+ jr t9
+#else
+ RESTORE_GP64
+ j __syscall_error
+#endif
+ END(__vfork)
+
+.weak vfork;
+ vfork = __vfork
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