summaryrefslogtreecommitdiff
path: root/ports/sysdeps/standalone/i960
diff options
context:
space:
mode:
Diffstat (limited to 'ports/sysdeps/standalone/i960')
-rw-r--r--ports/sysdeps/standalone/i960/Dist1
-rw-r--r--ports/sysdeps/standalone/i960/i960ca.h206
-rw-r--r--ports/sysdeps/standalone/i960/nindy960/Makefile24
-rw-r--r--ports/sysdeps/standalone/i960/nindy960/_exit.c55
-rw-r--r--ports/sysdeps/standalone/i960/nindy960/brdinit.c64
-rw-r--r--ports/sysdeps/standalone/i960/nindy960/console.c76
-rw-r--r--ports/sysdeps/standalone/i960/start.S152
7 files changed, 578 insertions, 0 deletions
diff --git a/ports/sysdeps/standalone/i960/Dist b/ports/sysdeps/standalone/i960/Dist
new file mode 100644
index 000000000..e1747ef91
--- /dev/null
+++ b/ports/sysdeps/standalone/i960/Dist
@@ -0,0 +1 @@
+i960ca.h
diff --git a/ports/sysdeps/standalone/i960/i960ca.h b/ports/sysdeps/standalone/i960/i960ca.h
new file mode 100644
index 000000000..0dcf5c374
--- /dev/null
+++ b/ports/sysdeps/standalone/i960/i960ca.h
@@ -0,0 +1,206 @@
+/* Copyright (C) 1994, 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil),
+ On-Line Applications Research Corporation.
+
+ 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. */
+
+/* i960ca.h
+ *
+ * This file contains macros which are used to access i80960CA
+ * registers which are not addressable by C. The functions
+ * in this file should be useful to the developer of target
+ * specific code.
+ */
+
+#ifndef i960ca_h__
+#define i960ca_h__
+
+typedef unsigned char unsigned8;
+typedef unsigned short unsigned16;
+typedef unsigned int unsigned32;
+
+/*
+ * Intel i80960CA Processor Control Block
+ */
+
+struct i80960ca_prcb {
+ unsigned32 *fault_tbl; /* fault table base address */
+ struct i80960ca_ctltbl
+ *control_tbl; /* control table base address */
+ unsigned32 initial_ac; /* AC register initial value */
+ unsigned32 fault_config; /* fault configuration word */
+ void *intr_tbl; /* interrupt table base address */
+ void *sys_proc_tbl; /* system procedure table */
+ /* base address */
+ unsigned32 reserved; /* reserved */
+ unsigned32 *intr_stack; /* interrupt stack pointer */
+ unsigned32 ins_cache_cfg; /* instruction cache */
+ /* configuration word */
+ unsigned32 reg_cache_cfg; /* register cache */
+ /* configuration word */
+};
+
+/*
+ * Intel i80960CA Control Table
+ */
+
+struct i80960ca_ctltbl {
+ /* Control Group 0 */
+ unsigned32 ipb0; /* IP breakpoint 0 */
+ unsigned32 ipb1; /* IP breakpoint 1 */
+ unsigned32 dab0; /* data address breakpoint 0 */
+ unsigned32 dab1; /* data address breakpoint 1 */
+ /* Control Group 1 */
+ unsigned32 imap0; /* interrupt map 0 */
+ unsigned32 imap1; /* interrupt map 1 */
+ unsigned32 imap2; /* interrupt map 2 */
+ unsigned32 icon; /* interrupt control */
+ /* Control Group 2 */
+ unsigned32 mcon0; /* memory region 0 configuration */
+ unsigned32 mcon1; /* memory region 1 configuration */
+ unsigned32 mcon2; /* memory region 2 configuration */
+ unsigned32 mcon3; /* memory region 3 configuration */
+ /* Control Group 3 */
+ unsigned32 mcon4; /* memory region 4 configuration */
+ unsigned32 mcon5; /* memory region 5 configuration */
+ unsigned32 mcon6; /* memory region 6 configuration */
+ unsigned32 mcon7; /* memory region 7 configuration */
+ /* Control Group 4 */
+ unsigned32 mcon8; /* memory region 8 configuration */
+ unsigned32 mcon9; /* memory region 9 configuration */
+ unsigned32 mcon10; /* memory region 10 configuration */
+ unsigned32 mcon11; /* memory region 11 configuration */
+ /* Control Group 5 */
+ unsigned32 mcon12; /* memory region 12 configuration */
+ unsigned32 mcon13; /* memory region 13 configuration */
+ unsigned32 mcon14; /* memory region 14 configuration */
+ unsigned32 mcon15; /* memory region 15 configuration */
+ /* Control Group 6 */
+ unsigned32 bpcon; /* breakpoint control */
+ unsigned32 tc; /* trace control */
+ unsigned32 bcon; /* bus configuration control */
+ unsigned32 reserved; /* reserved */
+};
+
+#define disable_intr( oldlevel ) \
+ { (oldlevel) = 0x1f0000; \
+ asm volatile ( "modpc 0,%1,%1" \
+ : "=d" ((oldlevel)) \
+ : "0" ((oldlevel)) ); \
+ }
+
+#define enable_intr( oldlevel ) \
+ { unsigned32 _mask = 0x1f0000; \
+ asm volatile ( "modpc 0,%0,%1" \
+ : "=d" (_mask), "=d" ((oldlevel)) \
+ : "0" (_mask), "1" ((oldlevel)) ); \
+ }
+
+#define flash_intr( oldlevel ) \
+ { unsigned32 _mask = 0x1f0000; \
+ asm volatile ( "modpc 0,%0,%1 ; \
+ mov %0,%1 ; \
+ modpc 0,%0,%1" \
+ : "=d" (_mask), "=d" ((oldlevel)) \
+ : "0" (_mask), "1" ((oldlevel)) ); \
+ }
+
+#define atomic_modify( mask, addr, prev ) \
+ { register unsigned32 _mask = (mask); \
+ register unsigned32 *_addr = (unsigned32 *)(addr); \
+ asm volatile( "atmod %0,%1,%1" \
+ : "=d" (_addr), "=d" (_mask) \
+ : "0" (_addr), "1" (_mask) ); \
+ (prev) = _mask; \
+ }
+
+#define delay( microseconds ) \
+ { register unsigned32 _delay=(microseconds); \
+ register unsigned32 _tmp; \
+ asm volatile( "delay0: \
+ remo 3,31,%0 ; \
+ cmpo 0,%0 ; \
+ subo 1,%1,%1 ; \
+ cmpobne.t 0,%1,delay0 " \
+ : "=d" (_tmp), "=d" (_delay) \
+ : "0" (_tmp), "1" (_delay) ); \
+ }
+
+#define enable_tracing() \
+ { register unsigned32 _pc = 0x1; \
+ asm volatile( "modpc 0,%0,%0" : "=d" (_pc) : "0" (_pc) ); \
+ }
+
+#define unmask_intr( xint ) \
+ { register unsigned32 _mask= (1<<(xint)); \
+ asm volatile( "or sf1,%0,sf1" : "=d" (_mask) : "0" (_mask) ); \
+ }
+
+#define mask_intr( xint ) \
+ { register unsigned32 _mask= (1<<(xint)); \
+ asm volatile( "andnot %0,sf1,sf1" : "=d" (_mask) : "0" (_mask) ); \
+ }
+
+#define clear_intr( xint ) \
+ { register unsigned32 _xint=(xint); \
+ asm volatile( "loop_til_cleared:" \
+ " clrbit %0,sf0,sf0 ;" \
+ " bbs %0,sf0,loop_til_cleared" \
+ : "=d" (_xint) : "0" (_xint) ); \
+ }
+
+#define reload_ctl_group( group ) \
+ { register int _cmd = ((group)|0x400) ; \
+ asm volatile( "sysctl %0,%0,%0" : "=d" (_cmd) : "0" (_cmd) ); \
+ }
+
+#define cause_intr( intr ) \
+ { register int _intr = (intr); \
+ asm volatile( "sysctl %0,%0,%0" : "=d" (_intr) : "0" (_intr) ); \
+ }
+
+#define soft_reset( prcb ) \
+ { register struct i80960ca_prcb *_prcb = (prcb); \
+ register unsigned32 *_next=0; \
+ register unsigned32 _cmd = 0x30000; \
+ asm volatile( "lda next,%1; \
+ sysctl %0,%1,%2; \
+ next: mov g0,g0" \
+ : "=d" (_cmd), "=d" (_next), "=d" (_prcb) \
+ : "0" (_cmd), "1" (_next), "2" (_prcb) ); \
+ }
+
+static inline unsigned32 pend_intrs()
+{ register unsigned32 _intr=0;
+ asm volatile( "mov sf0,%0" : "=d" (_intr) : "0" (_intr) );
+ return ( _intr );
+}
+
+static inline unsigned32 mask_intrs()
+{ register unsigned32 _intr=0;
+ asm volatile( "mov sf1,%0" : "=d" (_intr) : "0" (_intr) );
+ return( _intr );
+}
+
+static inline unsigned32 get_fp()
+{ register unsigned32 _fp=0;
+ asm volatile( "mov fp,%0" : "=d" (_fp) : "0" (_fp) );
+ return ( _fp );
+}
+
+#endif
+/* end of include file */
diff --git a/ports/sysdeps/standalone/i960/nindy960/Makefile b/ports/sysdeps/standalone/i960/nindy960/Makefile
new file mode 100644
index 000000000..40ead970a
--- /dev/null
+++ b/ports/sysdeps/standalone/i960/nindy960/Makefile
@@ -0,0 +1,24 @@
+# Copyright (C) 1993, 1997 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+# Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil),
+# On-Line Applications Research Corporation.
+
+# 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.
+
+
+# The nindy960 support has only been tested on the following boards:
+#
+# + Cyclone CVME961 VMEbus single board computer.
diff --git a/ports/sysdeps/standalone/i960/nindy960/_exit.c b/ports/sysdeps/standalone/i960/nindy960/_exit.c
new file mode 100644
index 000000000..9cd3f8519
--- /dev/null
+++ b/ports/sysdeps/standalone/i960/nindy960/_exit.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 1991, 1997, 1999 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil),
+ On-Line Applications Research Corporation.
+
+ 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 <unistd.h>
+#include <stdlib.h>
+
+/* The function `_exit' should take a status argument and simply
+ terminate program execution, using the low-order 8 bits of the
+ given integer as status. */
+
+/* This returns control to Nindy. */
+/* XXX where is __NORETURN ? */
+__NORETURN void
+_exit (status)
+ int status;
+{
+ /* status is ignored */
+
+ asm volatile( "mov 0,g0; \
+ fmark ; \
+ syncf ; \
+ .word 0xfeedface ; \
+ bx start" : : );
+ /* The constant 0xfeedface is a magic word for break which
+ * is defined by NINDY. The branch extended restarts the
+ * application if the user types "go".
+ */
+}
+weak_alias (_exit, _Exit)
+
+
+#ifdef HAVE_GNU_LD
+
+#include <gnu-stabs.h>
+
+stub_warning(_exit);
+
+#endif /* GNU stabs. */
diff --git a/ports/sysdeps/standalone/i960/nindy960/brdinit.c b/ports/sysdeps/standalone/i960/nindy960/brdinit.c
new file mode 100644
index 000000000..9985a9930
--- /dev/null
+++ b/ports/sysdeps/standalone/i960/nindy960/brdinit.c
@@ -0,0 +1,64 @@
+/* Copyright (C) 1994, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil),
+ On-Line Applications Research Corporation.
+
+ 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 <standalone.h>
+#include "i960ca.h"
+
+/* _Board_Initialize()
+
+This routine initializes the board.
+
+NOTE: Only tested on a Cyclone CVME961 but should be OK on any i960ca board. */
+
+void
+_Board_Initialize ()
+{
+ struct i80960ca_prcb *prcb; /* ptr to processor control block */
+ struct i80960ca_ctltbl *ctl_tbl; /* ptr to control table */
+
+ static inline struct i80960ca_prcb *get_prcb()
+ { register struct i80960ca_prcb *_prcb = 0;
+ asm volatile( "calls 5; \
+ mov g0,%0" \
+ : "=d" (_prcb) \
+ : "0" (_prcb) );
+ return ( _prcb );
+ }
+
+ prcb = get_prcb ();
+ ctl_tbl = prcb->control_tbl;
+
+ /* The following configures the data breakpoint (which must be set
+ * before this is executed) to break on writes only.
+ */
+
+ ctl_tbl->bpcon &= ~0x00cc0000;
+ reload_ctl_group (6);
+
+ /* bit 31 of the Register Cache Control can be set to
+ * enable an alternative caching algorithm. It does
+ * not appear to help our applications.
+ */
+
+ /* Configure Number of Register Caches */
+
+ prcb->reg_cache_cfg = 8;
+ soft_reset (prcb);
+}
diff --git a/ports/sysdeps/standalone/i960/nindy960/console.c b/ports/sysdeps/standalone/i960/nindy960/console.c
new file mode 100644
index 000000000..b062d9215
--- /dev/null
+++ b/ports/sysdeps/standalone/i960/nindy960/console.c
@@ -0,0 +1,76 @@
+/* Copyright (C) 1994, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil),
+ On-Line Applications Research Corporation.
+
+ 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 <standalone.h>
+#include "i960ca.h"
+
+/* Console IO routines for a NINDY960 board. */
+
+/*
+ * NINDY_IO( ... )
+ *
+ * Interface to NINDY.
+ */
+
+#define NINDY_INPUT 0
+#define NINDY_OUTPUT 1
+
+void ___NINDY_IO_WRAPPER( void ) /* never called */
+{
+ asm volatile ( " .text" );
+ asm volatile ( " .align 4" );
+ asm volatile ( " .globl _NINDY_IO" );
+ asm volatile ( "_NINDY_IO:" );
+ asm volatile ( " calls 0 /* call console routines */" );
+ asm volatile ( " ret" );
+}
+
+/***** !!!! HOW DO I EXFUN NINDY_IO? !!!! *****/
+
+/* _Console_Putc
+
+This routine transmits a character using NINDY. */
+
+int
+_Console_Putc (ch)
+ char ch;
+{
+ NINDY_IO( NINDY_OUTPUT, ch );
+ return( 0 );
+}
+
+/* _Console_Getc
+
+This routine reads a character from NINDY and returns it. */
+
+int
+_Console_Getc (poll)
+ int poll;
+{
+ char ch;
+
+ if ( poll ) {
+ /* I don't know how to poll with NINDY */
+ return -1;
+ } else {
+ NINDY_IO( NINDY_INPUT, &ch );
+ return ch;
+ }
+}
diff --git a/ports/sysdeps/standalone/i960/start.S b/ports/sysdeps/standalone/i960/start.S
new file mode 100644
index 000000000..579beb77f
--- /dev/null
+++ b/ports/sysdeps/standalone/i960/start.S
@@ -0,0 +1,152 @@
+/* Copyright (C) 1994, 1997 Free Software Foundation, Inc.
+ Contributed by Joel Sherrill (jsherril@redstone-emh2.army.mil),
+ On-Line Applications Research Corporation.
+ 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.
+
+ In addition to the permissions in the GNU Lesser General Public
+ License, the Free Software Foundation gives you unlimited
+ permission to link the compiled version of this file with other
+ programs, and to distribute those programs without any restriction
+ coming from the use of this file. (The GNU Lesser General Public
+ License restrictions do apply in other respects; for example, they
+ cover modification of the file, and distribution when not linked
+ into another program.)
+
+ Note that people who make modified versions of this file are not
+ obligated to grant this special exception for their modified
+ versions; it is their choice whether to do so. The GNU Lesser
+ General Public License gives permission to release a modified
+ version without this exception; this exception also makes it
+ possible to release a modified version which carries forward this
+ exception.
+
+ 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. */
+
+/* entry.s
+ *
+ * This file contains the entry point for the application.
+ * The name of this entry point is compiler dependent.
+ * It jumps to the BSP which is responsible for performing
+ * all initialization.
+ *
+ */
+
+ .text
+ .globl start # GNU960 default entry point
+
+start:
+ mov 3, r12
+ modpc r12, r12, r12 # enable tracing/trace faults
+ mov g5, g5 # NOP
+ mov 0, g14 # initialize constant for C
+
+ /*
+ * zero out uninitialized data area
+ */
+zerobss:
+ lda _end, r4 /* find end of .bss */
+ lda _bss_start, r5 /* find beginning of .bss */
+ ldconst 0, r6
+
+loop: st r6, (r5) /* to zero out uninitialized */
+ addo 4, r5, r5 /* data area */
+ cmpobl r5, r4, loop /* loop until _end reached */
+
+
+ lda heap_memory, r12 /* tell C lib where heap is */
+ st r12,___C_heap_start
+ lda heap_size, r12 /* tell C lib how big heap is */
+ st r12,___C_heap_size
+ lda stack_memory,r12 /* set up stack pointer: */
+ mov r12, sp
+ mov 0, g14 /* initialize constant for C */
+
+ call init_frames
+ ret /* return to monitor */
+
+init_frames:
+ ldconst 0x3b001000, g0
+ ldconst 0x00009107, g1
+ modac g1, g0, g0 /* set AC controls */
+
+ /*
+ * Call application mainline.
+ * Someday, real values of argc and argv will be set up.
+ * For now, they are set to 0.
+ */
+
+ callx __Board_Initialize /* Initialize the board */
+
+ ldconst 0,g0
+ ldconst 0,g1
+ ldconst 0,g2
+ callx ___libc_init /* initialize the library and */
+ /* call main */
+ /*
+ * if we return from main, we have "fallen" off the end
+ * of the program, therefore status is 0
+ * so move 0 to g0 (exit parameter)
+ */
+
+ mov 0, g0
+ callx __exit
+ ret
+
+
+/*
+ * Data Declarations. Start with a macro which helps declare space.
+ */
+
+#define DECLARE_SPACE(_name,_space,_align) \
+ .globl _name ; \
+ .align _align ; \
+.comm _name##,_space
+
+#define DECLARE_LABEL(_name) \
+ .globl _name ; \
+_name##:
+
+#define DECLARE_PTR(_name) DECLARE_SPACE(_name,4,2)
+#define DECLARE_U32(_name) DECLARE_SPACE(_name,4,2)
+#define DECLARE_U16(_name) DECLARE_SPACE(_name,2,1)
+
+/*
+ * Require environment stuff
+ */
+
+DECLARE_LABEL(_environ)
+DECLARE_PTR(environ)
+
+DECLARE_LABEL(_errno)
+DECLARE_U32(errno)
+
+/*
+ * Stack Size and Space
+ */
+
+ .set stack_size, 0x20000
+
+DECLARE_SPACE(stack_memory,stack_size,4)
+DECLARE_LABEL(stack_end)
+
+/*
+ * Heap Size and Space
+ */
+
+ .set heap_size, 0x20000
+
+DECLARE_SPACE(heap_memory,heap_size,4)
+DECLARE_LABEL(heap_end)
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-25 15:15:23 +0000