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-rw-r--r--libc/sysdeps/linux/sh/Makefile2
-rw-r--r--libc/sysdeps/linux/sh/clone.S137
-rw-r--r--libc/sysdeps/linux/sh/vfork.S1
-rw-r--r--libpthread/linuxthreads/sysdeps/sh/pt-machine.h56
-rw-r--r--libpthread/linuxthreads/sysdeps/sh/sigcontextinfo.h27
5 files changed, 222 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/sh/Makefile b/libc/sysdeps/linux/sh/Makefile
index 1f7d76a70..2e37e8974 100644
--- a/libc/sysdeps/linux/sh/Makefile
+++ b/libc/sysdeps/linux/sh/Makefile
@@ -32,7 +32,7 @@ TARGET_MACHINE_TYPE=$(shell $(CC) -dumpmachine)
CRT0=crt0.S
CRT0_OBJ=$(patsubst %.S,%.o, $(CRT0))
-SSRC=setjmp.S bsd-setjmp.S bsd-_setjmp.S __longjmp.S vfork.S
+SSRC=setjmp.S bsd-setjmp.S bsd-_setjmp.S __longjmp.S vfork.S clone.S
SOBJS=$(patsubst %.S,%.o, $(SSRC))
CSRC=_mmap.c longjmp.c pipe.c __init_brk.c brk.c sbrk.c
diff --git a/libc/sysdeps/linux/sh/clone.S b/libc/sysdeps/linux/sh/clone.S
new file mode 100644
index 000000000..95ae6647c
--- /dev/null
+++ b/libc/sysdeps/linux/sh/clone.S
@@ -0,0 +1,137 @@
+/* Copyright (C) 1999, 2000 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. */
+
+/* clone() is even more special than fork() as it mucks with stacks
+ and invokes a function in the right context after its all over. */
+
+#include <asm/unistd.h>
+#include <sysdep.h>
+#define _ERRNO_H 1
+#include <bits/errno.h>
+
+/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg); */
+
+ .text
+.extern __syscall_error
+
+ENTRY(__clone)
+ /* sanity check arguments. */
+ tst r4, r4
+ bf/s 1f
+ tst r5, r5
+ bf/s 1f
+ mov.l .L1, r1
+#ifdef SHARED
+ mov.l r12, @-r15
+ sts.l pr, @-r15
+ mov.l .LG, r12
+ mova .LG, r0
+ add r0, r12
+ mova .L1, r0
+ add r0, r1
+ jsr @r1
+ mov #-EINVAL, r4
+ lds.l @r15+, pr
+ rts
+ mov.l @r15+, r12
+#else
+ jmp @r1
+ mov #-EINVAL, r4
+#endif
+ .align 2
+.L1:
+ .long PLTJMP(C_SYMBOL_NAME(__syscall_error))
+1:
+ /* insert the args onto the new stack */
+ mov.l r7, @-r5
+ /* save the function pointer as the 0th element */
+ mov.l r4, @-r5
+
+ /* do the system call */
+ mov r6, r4
+ mov #+__NR_clone, r3
+ trapa #0x12
+ mov r0, r1
+ mov #-12, r2
+ shad r2, r1
+ not r1, r1 // r1=0 means r0 = -1 to -4095
+ tst r1, r1 // i.e. error in linux
+ bf 2f
+ mov.l .L2, r1
+#ifdef SHARED
+ mov r0, r4
+ mov.l r12, @-r15
+ sts.l pr, @-r15
+ mov.l .LG, r12
+ mova .LG, r0
+ add r0, r12
+ mova .L2, r0
+ add r0, r1
+ jsr @r1
+ nop
+ lds.l @r15+, pr
+ rts
+ mov.l @r15+, r12
+#else
+ jmp @r1
+ mov r0, r4
+#endif
+ .align 2
+.L2:
+ .long PLTJMP(C_SYMBOL_NAME(__syscall_error))
+
+2:
+ tst r0, r0
+ bt 3f
+ rts
+ nop
+3:
+ /* thread starts */
+ mov.l @r15, r1
+ jsr @r1
+ mov.l @(4,r15), r4
+
+ /* we are done, passing the return value through r0 */
+ mov.l .L3, r1
+#ifdef SHARED
+ mov.l r12, @-r15
+ sts.l pr, @-r15
+ mov r0, r4
+ mova .LG, r0
+ mov.l .LG, r12
+ add r0, r12
+ mova .L3, r0
+ add r0, r1
+ jsr @r1
+ nop
+ lds.l @r15+, pr
+ rts
+ mov.l @r15+, r12
+#else
+ jmp @r1
+ mov r0, r4
+#endif
+ .align 2
+.LG:
+ .long _GLOBAL_OFFSET_TABLE_
+.L3:
+ .long PLTJMP(C_SYMBOL_NAME(_exit))
+ END(__clone)
+
+.globl clone;
+ clone = __clone
diff --git a/libc/sysdeps/linux/sh/vfork.S b/libc/sysdeps/linux/sh/vfork.S
index 6b20cc3bb..ef7b373aa 100644
--- a/libc/sysdeps/linux/sh/vfork.S
+++ b/libc/sysdeps/linux/sh/vfork.S
@@ -85,6 +85,7 @@ ENTRY (__vfork)
.align 4
2:
+.global __syscall_error
__syscall_error:
/* Store it in errno... */
mov.l .L4, r1
diff --git a/libpthread/linuxthreads/sysdeps/sh/pt-machine.h b/libpthread/linuxthreads/sysdeps/sh/pt-machine.h
new file mode 100644
index 000000000..7287dc936
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/sh/pt-machine.h
@@ -0,0 +1,56 @@
+/* Machine-dependent pthreads configuration and inline functions.
+ SuperH version.
+ Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Niibe Yutaka <gniibe@m17n.org>.
+
+ 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 PT_EI
+# define PT_EI extern inline
+#endif
+
+/* Spinlock implementation; required. */
+PT_EI long int
+testandset (int *spinlock)
+{
+ int ret;
+
+ __asm__ __volatile__(
+ "tas.b @%1\n\t"
+ "movt %0"
+ : "=r" (ret)
+ : "r" (spinlock)
+ : "memory", "cc");
+
+ return (ret == 0);
+}
+
+
+/* Get some notion of the current stack. Need not be exactly the top
+ of the stack, just something somewhere in the current frame. */
+#define CURRENT_STACK_FRAME stack_pointer
+register char * stack_pointer __asm__ ("r15");
+
+/* Return the thread descriptor for the current thread. */
+struct _pthread_descr_struct;
+#define THREAD_SELF \
+ ({ struct _pthread_descr_struct *self; \
+ __asm__("stc gbr,%0" : "=r" (self)); self;})
+
+/* Initialize the thread-unique value. */
+#define INIT_THREAD_SELF(descr, nr) \
+ ({ __asm__("ldc %0,gbr" : : "r" (descr));})
diff --git a/libpthread/linuxthreads/sysdeps/sh/sigcontextinfo.h b/libpthread/linuxthreads/sysdeps/sh/sigcontextinfo.h
new file mode 100644
index 000000000..3e1f3e949
--- /dev/null
+++ b/libpthread/linuxthreads/sysdeps/sh/sigcontextinfo.h
@@ -0,0 +1,27 @@
+/* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Philip Blundell <philb@gnu.org>, 1999.
+
+ 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. */
+
+#define SIGCONTEXT int _a2, int _a3, int _a4, struct sigcontext
+
+#define SIGCONTEXT_EXTRA_ARGS _a2, _a3, _a4,
+#define GET_PC(ctx) ((void *) ctx.sc_pc)
+#define GET_FRAME(ctx) ((void *) ctx.sc_regs[14])
+#define GET_STACK(ctx) ((void *) ctx.sc_regs[15])
+#define CALL_SIGHANDLER(handler, signo, ctx) \
+ (handler)((signo), SIGCONTEXT_EXTRA_ARGS (ctx))
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 09:34:34 +0000