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-rw-r--r--ports/sysdeps/unix/bsd/sequent/i386/getgroups.S44
-rw-r--r--ports/sysdeps/unix/bsd/sequent/i386/sigvec.S45
-rw-r--r--ports/sysdeps/unix/bsd/sequent/i386/syscall.S31
-rw-r--r--ports/sysdeps/unix/bsd/sequent/i386/sysdep.h82
4 files changed, 202 insertions, 0 deletions
diff --git a/ports/sysdeps/unix/bsd/sequent/i386/getgroups.S b/ports/sysdeps/unix/bsd/sequent/i386/getgroups.S
new file mode 100644
index 000000000..55fa7288d
--- /dev/null
+++ b/ports/sysdeps/unix/bsd/sequent/i386/getgroups.S
@@ -0,0 +1,44 @@
+/* Copyright (C) 1994, 1995, 1997 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 <sysdep.h>
+#include <limits.h>
+
+/* Dynix erroneously reports `getgroups (0, 0)' as an error.
+ We fix up for that case. */
+
+#define syscall_error myerror
+SYSCALL__ (getgroups, 2)
+#undef syscall_error
+ ret
+myerror:
+ tstl 4(%esp) /* Was the first arg 0? */
+ jnz syscall_error /* If not, go to the normal error case. */
+ /* When called with (0, 0), we want to return the number of groups
+ without storing anything. The Dynix system call gives an error
+ for this case, so we fix up by calling it with a local array we
+ never use, and just use the return value. */
+ subl %esp, $(NGROUPS_MAX * 4) /* Allocate a local array. */
+ movl $NGROUPS_MAX, %ecx /* Pass NGROUPS_MAX for first arg. */
+ movl %esp, %edx /* Pass local array for second arg. */
+ DO_CALL (getgroups, 2) /* Do the system call. */
+ addl %esp, $(NGROUPS_MAX * 4) /* Pop the local array. */
+ jb syscall_error /* Check for error from the system call. */
+ ret /* Return its value. */
+
+weak_alias (__getgroups, getgroups)
diff --git a/ports/sysdeps/unix/bsd/sequent/i386/sigvec.S b/ports/sysdeps/unix/bsd/sequent/i386/sigvec.S
new file mode 100644
index 000000000..62373e131
--- /dev/null
+++ b/ports/sysdeps/unix/bsd/sequent/i386/sigvec.S
@@ -0,0 +1,45 @@
+/* Copyright (C) 1993, 1995, 1997 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 <sysdep.h>
+
+/* The Dynix `sigvec' system call takes an extra argument,
+ which is the address of the trampoline function. */
+
+.text
+.align 4
+trampoline:
+ cld /* Clear direction flag. */
+ call %eax /* Call the handler, address in %eax. */
+ addl $8, %esp /* Pop signum & code off the stack. */
+ /* __sigreturn will restore the context, and never return here. */
+ call C_SYMBOL_NAME (__sigreturn)
+
+.globl syscall_error
+ENTRY (__sigvec)
+ pushl $trampoline /* Push fourth arg: trampoline address. */
+ pushl 16(%esp) /* Push third arg: our third arg. */
+ pushl 16(%esp) /* Push second arg: our second arg. */
+ pushl 16(%esp) /* Push first arg: our first arg. */
+ mov %esp, %ecx /* Point the syscall at the arguments. */
+ addl $16, %esp /* Pop those four args. */
+ DO_CALL (sigvec, 4) /* Do the system call. */
+ jb syscall_error /* Check for error. */
+ ret
+
+weak_alias (__sigvec, sigvec)
diff --git a/ports/sysdeps/unix/bsd/sequent/i386/syscall.S b/ports/sysdeps/unix/bsd/sequent/i386/syscall.S
new file mode 100644
index 000000000..9ff189885
--- /dev/null
+++ b/ports/sysdeps/unix/bsd/sequent/i386/syscall.S
@@ -0,0 +1,31 @@
+/* `syscall' function for Sequent Symmetry running Dynix version 3.
+ Copyright (C) 1994, 1997 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 <sysdep.h>
+
+.text
+.globl syscall_error
+.align 4
+ENTRY (syscall)
+ leal 8(%esp), %ecx /* Load address of second argument. */
+ movl $SYS_HANDLER, %eax /* Use BSD system calls. */
+ movw 4(%esp), %ax /* Load system call number into low word. */
+ int $T_SVC6 /* Pretend it takes six args. */
+ jb syscall_error
+ ret
diff --git a/ports/sysdeps/unix/bsd/sequent/i386/sysdep.h b/ports/sysdeps/unix/bsd/sequent/i386/sysdep.h
new file mode 100644
index 000000000..c3d9d919b
--- /dev/null
+++ b/ports/sysdeps/unix/bsd/sequent/i386/sysdep.h
@@ -0,0 +1,82 @@
+/* System call interface code for Sequent Symmetry running Dynix version 3.
+ Copyright (C) 1993, 1995, 1997 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 <sysdeps/unix/i386/sysdep.h>
+
+#ifdef __ASSEMBLER__
+
+/* Get the symbols for system call interrupts. */
+#include <machine/trap.h>
+
+/* Use the BSD versions of system calls, by setting the high 16 bits
+ of the syscall number (see /usr/include/syscall.h). */
+#define SYS_HANDLER (SYS_bsd << 16)
+
+/* Dynix uses an interrupt interface to system calls.
+ "int $T_SVCn" are syscall interfaces for 0-6 arg functions.
+ (see /usr/include/machine/trap.h). */
+
+#undef DO_CALL
+
+#ifdef __STDC__
+#define DO_CALL(syscall_name, args) \
+ movl $(SYS_HANDLER | SYS_##syscall_name), %eax; \
+ int $T_SVC##args;
+#else
+#define DO_CALL(syscall_name, args) \
+ movl $(SYS_HANDLER | SYS_/**/syscall_name), %eax; \
+ int $T_SVC/**/args;
+#endif
+
+#undef PSEUDO
+#define PSEUDO(name, syscall_name, args) \
+ .text; \
+ .globl syscall_error; \
+ .align 4; \
+ ENTRY (name) \
+ ARGS (args) \
+ DO_CALL (syscall_name, args) \
+ jb syscall_error
+
+/* For one and two-argument calls, Dynix takes the arguments in %ecx and
+ %edx. For 3-6 argument calls, Dynix takes the address of the first
+ argument in %ecx. */
+
+#ifdef __STDC__
+#define ARGS(n) ARGS_##n
+#else
+#define ARGS(n) ARGS_/**/n
+#endif
+
+#define ARGS_0
+#define ARGS_1 movl 4(%esp), %ecx;
+#define ARGS_2 movl 4(%esp), %ecx; movl 8(%esp), %edx;
+#define ARGS_3 leal 4(%esp), %ecx;
+#define ARGS_4 ARGS_3
+#define ARGS_5 ARGS_3
+#define ARGS_6 ARGS_3
+
+/* Dynix reverses %ecx and %edx relative to most i386 Unices. */
+
+#undef r1
+#define r1 %ecx /* Secondary return-value register. */
+#undef scratch
+#define scratch %edx /* Call-clobbered register for random use. */
+
+#endif /* __ASSEMBLER__ */
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