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-rw-r--r--sysdeps/standalone/m68k/m68020/Dist1
-rw-r--r--sysdeps/standalone/m68k/m68020/m68020.h88
-rw-r--r--sysdeps/standalone/m68k/m68020/mvme135/Implies2
-rw-r--r--sysdeps/standalone/m68k/m68020/mvme136/Dist1
-rw-r--r--sysdeps/standalone/m68k/m68020/mvme136/Makefile22
-rw-r--r--sysdeps/standalone/m68k/m68020/mvme136/_exit.c49
-rw-r--r--sysdeps/standalone/m68k/m68020/mvme136/brdinit.c53
-rw-r--r--sysdeps/standalone/m68k/m68020/mvme136/console.c101
-rw-r--r--sysdeps/standalone/m68k/m68020/mvme136/mvme136.ld62
-rw-r--r--sysdeps/standalone/m68k/m68020/start.S155
10 files changed, 534 insertions, 0 deletions
diff --git a/sysdeps/standalone/m68k/m68020/Dist b/sysdeps/standalone/m68k/m68020/Dist
new file mode 100644
index 0000000000..90b37b40eb
--- /dev/null
+++ b/sysdeps/standalone/m68k/m68020/Dist
@@ -0,0 +1 @@
+m68020.h
diff --git a/sysdeps/standalone/m68k/m68020/m68020.h b/sysdeps/standalone/m68k/m68020/m68020.h
new file mode 100644
index 0000000000..e9e6f7d875
--- /dev/null
+++ b/sysdeps/standalone/m68k/m68020/m68020.h
@@ -0,0 +1,88 @@
+/* Copyright (C) 1994 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 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., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+/* m68020.h
+ *
+ * This file contains macros which are used to access MC68020
+ * registers which are not addressable by C. These are
+ * useful when developing the board specific support.
+ */
+
+#ifndef m68020_h__
+#define m68020_h__
+
+typedef void ( *mc68020_isr )( void );
+
+#define disable_intr( level ) \
+ { (level) = 0; \
+ asm volatile ( "movew %%sr,%0 ; \
+ orw #0x0700,%%sr" \
+ : "=d" ((level)) : "0" ((level)) ); \
+ }
+
+#define enable_intr( level ) \
+ { asm volatile ( "movew %0,%%sr " \
+ : "=d" ((level)) : "0" ((level)) ); \
+ }
+
+#define flash_intr( level ) \
+ { asm volatile ( "movew %0,%%sr ; \
+ orw #0x0700,%%sr" \
+ : "=d" ((level)) : "0" ((level)) ); \
+ }
+
+#define get_vbr( vbr ) \
+ { (vbr) = 0; \
+ asm volatile ( "movec %%vbr,%0 " \
+ : "=a" (vbr) : "0" (vbr) ); \
+ }
+
+#define set_vbr( vbr ) \
+ { register mc68020_isr *_vbr= (mc68020_isr *)(vbr); \
+ asm volatile ( "movec %0,%%vbr " \
+ : "=a" (_vbr) : "0" (_vbr) ); \
+ }
+
+#define enable_caching() \
+ { register unsigned int _ctl=0x01; \
+ asm volatile ( "movec %0,%%cacr" \
+ : "=d" (_ctl) : "0" (_ctl) ); \
+ }
+
+#define delay( microseconds ) \
+ { register unsigned int _delay=(microseconds); \
+ register unsigned int _tmp=123; \
+ asm volatile( "0: \
+ nbcd %0 ; \
+ nbcd %0 ; \
+ dbf %1,0 " \
+ : "=d" (_tmp), "=d" (_delay) \
+ : "0" (_tmp), "1" (_delay) ); \
+ }
+
+#define enable_tracing()
+#define cause_intr( X )
+#define clear_intr( X )
+
+extern mc68020_isr M68Kvec[]; /* vector table address */
+
+#endif
+/* end of include file */
diff --git a/sysdeps/standalone/m68k/m68020/mvme135/Implies b/sysdeps/standalone/m68k/m68020/mvme135/Implies
new file mode 100644
index 0000000000..7142fe2985
--- /dev/null
+++ b/sysdeps/standalone/m68k/m68020/mvme135/Implies
@@ -0,0 +1,2 @@
+# Motorola MVME135 and MVME136 are compatible.
+standalone/m68k/m68020/mvme136
diff --git a/sysdeps/standalone/m68k/m68020/mvme136/Dist b/sysdeps/standalone/m68k/m68020/mvme136/Dist
new file mode 100644
index 0000000000..97b90583eb
--- /dev/null
+++ b/sysdeps/standalone/m68k/m68020/mvme136/Dist
@@ -0,0 +1 @@
+mvme136.ld
diff --git a/sysdeps/standalone/m68k/m68020/mvme136/Makefile b/sysdeps/standalone/m68k/m68020/mvme136/Makefile
new file mode 100644
index 0000000000..33f049c58c
--- /dev/null
+++ b/sysdeps/standalone/m68k/m68020/mvme136/Makefile
@@ -0,0 +1,22 @@
+# Copyright (C) 1993 Free Software Foundation, Inc.
+# 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 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., 675 Mass Ave,
+# Cambridge, MA 02139, USA.
+
+ifeq (bare,$(subdir))
+install-lib += mvme136.ld
+endif
diff --git a/sysdeps/standalone/m68k/m68020/mvme136/_exit.c b/sysdeps/standalone/m68k/m68020/mvme136/_exit.c
new file mode 100644
index 0000000000..d13b4d9770
--- /dev/null
+++ b/sysdeps/standalone/m68k/m68020/mvme136/_exit.c
@@ -0,0 +1,49 @@
+/* Copyright (C) 1994 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 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., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include "m68020.h"
+
+/* Return control to 135Bug */
+
+void
+DEFUN_VOID(__exit_trap)
+{
+ set_vbr( 0 ); /* restore 135Bug vectors */
+ asm volatile( "trap #15" ); /* trap to 135Bug */
+ asm volatile( ".short 0x63" ); /* return to 135Bug (.RETURN) */
+ asm volatile( "jmp main" ); /* restart program */
+}
+
+/* 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. */
+
+__NORETURN void
+DEFUN(_exit, (status), int status)
+{
+ /* status is ignored */
+
+ M68Kvec[ 45 ] = __exit_trap; /* install exit_trap handler */
+ asm volatile( "trap #13" ); /* insures SUPV mode */
+}
diff --git a/sysdeps/standalone/m68k/m68020/mvme136/brdinit.c b/sysdeps/standalone/m68k/m68020/mvme136/brdinit.c
new file mode 100644
index 0000000000..0c4801a49b
--- /dev/null
+++ b/sysdeps/standalone/m68k/m68020/mvme136/brdinit.c
@@ -0,0 +1,53 @@
+/* Copyright (C) 1994 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 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., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <standalone.h>
+#include "m68020.h"
+
+/* _Board_Initialize()
+
+This routine initializes the Motorola MVME135/MVME136. */
+
+void
+DEFUN_VOID(_Board_Initialize)
+{
+ mc68020_isr *monitors_vector_table;
+ int index;
+
+ monitors_vector_table = (mc68020_isr *)0; /* 135Bug Vectors are at 0 */
+ set_vbr( monitors_vector_table );
+
+ for ( index=2 ; index<=255 ; index++ )
+ M68Kvec[ index ] = monitors_vector_table[ 32 ];
+
+ M68Kvec[ 2 ] = monitors_vector_table[ 2 ]; /* bus error vector */
+ M68Kvec[ 4 ] = monitors_vector_table[ 4 ]; /* breakpoints vector */
+ M68Kvec[ 9 ] = monitors_vector_table[ 9 ]; /* trace vector */
+ M68Kvec[ 47 ] = monitors_vector_table[ 47 ]; /* system call vector */
+
+ set_vbr( &M68Kvec );
+
+ (*(unsigned char *)0xfffb0067) = 0x7f; /* make VME access round-robin */
+
+ enable_caching();
+
+}
diff --git a/sysdeps/standalone/m68k/m68020/mvme136/console.c b/sysdeps/standalone/m68k/m68020/mvme136/console.c
new file mode 100644
index 0000000000..159070bab9
--- /dev/null
+++ b/sysdeps/standalone/m68k/m68020/mvme136/console.c
@@ -0,0 +1,101 @@
+/* Copyright (C) 1994 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 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., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+#include <ansidecl.h>
+#include <standalone.h>
+#include "m68020.h"
+
+/* Console IO routines for a Motorola MVME135/MVME136 board.
+
+They currently use the B port. It should be possible to
+use the A port by filling in the reset of the chip structure,
+adding an ifdef for PORTA/PORTB, and switching the addresses,
+and maybe the macroes based on the macro. */
+
+/* M68681 DUART chip register structures and constants */
+
+typedef struct {
+ volatile unsigned char fill1[ 5 ]; /* channel A regs ( not used ) */
+ volatile unsigned char isr; /* interrupt status reg */
+ volatile unsigned char fill2[ 2 ]; /* counter regs (not used) */
+ volatile unsigned char mr1mr2b; /* MR1B and MR2B regs */
+ volatile unsigned char srb; /* status reg channel B */
+ volatile unsigned char fill3; /* do not access */
+ volatile unsigned char rbb; /* receive buffer channel B */
+ volatile unsigned char ivr; /* interrupt vector register */
+} r_m681_info;
+
+typedef struct {
+ volatile unsigned char fill1[ 4 ]; /* channel A regs (not used) */
+ volatile unsigned char acr; /* auxillary control reg */
+ volatile unsigned char imr; /* interrupt mask reg */
+ volatile unsigned char fill2[ 2 ]; /* counter regs (not used) */
+ volatile unsigned char mr1mr2b; /* MR1B and MR2B regs */
+ volatile unsigned char csrb; /* clock select reg */
+ volatile unsigned char crb; /* command reg */
+ volatile unsigned char tbb; /* transmit buffer channel B */
+ volatile unsigned char ivr; /* interrupt vector register */
+} w_m681_info;
+
+#define RD_M68681 ((r_m681_info *)0xfffb0040) /* ptr to the M68681 */
+#define WR_M68681 ((w_m681_info *)0xfffb0040) /* ptr to the M68681 */
+#define RXRDYB 0x01 /* status reg recv ready mask */
+#define TXRDYB 0x04 /* status reg trans ready mask */
+
+/* _Console_Putc
+
+This routine transmits a character out the M68681. It supports
+XON/XOFF flow control. */
+
+#define XON 0x11 /* control-Q */
+#define XOFF 0x13 /* control-S */
+
+int
+DEFUN( _Console_Putc, (ch), char ch )
+{
+ while ( ! (RD_M68681->srb & TXRDYB) ) ;
+ while ( RD_M68681->srb & RXRDYB ) /* must be an XOFF */
+ if ( RD_M68681->rbb == XOFF )
+ do {
+ while ( ! (RD_M68681->srb & RXRDYB) ) ;
+ } while ( RD_M68681->rbb != XON );
+
+ WR_M68681->tbb = ch;
+ return( 0 );
+}
+
+/* _Console_Getc
+
+This routine reads a character from the UART and returns it. */
+
+int
+DEFUN( _Console_Getc, (poll), int poll )
+{
+ if ( poll ) {
+ if ( !(RD_M68681->srb & RXRDYB) )
+ return -1;
+ else
+ return RD_M68681->rbb;
+ } else {
+ while ( !(RD_M68681->srb & RXRDYB) );
+ return RD_M68681->rbb;
+ }
+}
diff --git a/sysdeps/standalone/m68k/m68020/mvme136/mvme136.ld b/sysdeps/standalone/m68k/m68020/mvme136/mvme136.ld
new file mode 100644
index 0000000000..0f68330241
--- /dev/null
+++ b/sysdeps/standalone/m68k/m68020/mvme136/mvme136.ld
@@ -0,0 +1,62 @@
+/* Copyright (C) 1994 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 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., 675 Mass Ave,
+Cambridge, MA 02139, USA. */
+
+/* This file contains directives for the GNU linker which are specific
+to the Motorola MVME136/MVME135 boards. */
+
+MEMORY
+ {
+ ram : org = 0x3000, l = 1M
+ }
+
+/* This value is also when the space is allocated. If you change
+this one, change the other one!!! */
+
+heap_size = 0x20000;
+
+SECTIONS
+{
+ .text 0x3000 :
+ {
+ text_start = ABSOLUTE(.) ;
+ *(.text)
+ etext = ALIGN( 0x10 ) ;
+ }
+
+ .data ADDR( .text ) + SIZEOF( .text ):
+ {
+ data_start = . ;
+ *(.data)
+ edata = ALIGN( 0x10 ) ;
+ }
+
+ .bss ADDR( .data ) + SIZEOF( .data ):
+ {
+ bss_start = . ;
+ _bss_start = . ;
+ *(.bss)
+ *(COMMON)
+ heap_memory = .;
+ . += 0x20000;
+ end = . ;
+ _end = . ;
+ }
+}
diff --git a/sysdeps/standalone/m68k/m68020/start.S b/sysdeps/standalone/m68k/m68020/start.S
new file mode 100644
index 0000000000..cbabf5bf07
--- /dev/null
+++ b/sysdeps/standalone/m68k/m68020/start.S
@@ -0,0 +1,155 @@
+/* Copyright (C) 1994 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 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., 675 Mass Ave,
+Cambridge, MA 02139, 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 | Default entry point
+ .globl _start | Default entry point
+ .globl M68Kvec | Vector Table
+ .globl _M68Kvec | Vector Table
+
+start:
+_start:
+M68Kvec: | standard location for vectors
+_M68Kvec: | standard location for vectors
+ nop | for linkers with problem
+ | using location zero as entry
+ jmp around
+ .space 4088 | to avoid initial intr stack
+ | from 135BUG on MVME13? as entry
+ | and start code at 0x4000
+around:
+ move.w %sr,initial_sr | save initial values
+ movec %isp,%a0
+ movel %a0,initial_isp
+ movec %usp,%a0
+ movel %a0,initial_usp
+ movec %msp,%a0
+ movel %a0,initial_msp
+ oriw #0x0700,%sr | INTERRUPTS OFF!!!
+
+
+
+ |
+ | zero out uninitialized data area
+ |
+zerobss:
+ moveal #end,%a0 | find end of .bss
+ moveal #_bss_start,%a1 | find beginning of .bss
+ movel #0,%d0
+
+loop: movel #0,%a1@+ | to zero out uninitialized
+ cmpal %a0,%a1
+ jlt loop | loop until _end reached
+
+ movel #heap_size,__C_heap_size | set ___C_heap_size
+ movel #heap_memory,__C_heap_start | set ___C_heap_start
+ moveal #interrupt_stack_end,%a0 | set interrupt stack pointer
+ movec %a0,%isp
+ moveal #stack_end,%a0 | set master stack pointer
+ movec %a0,%msp
+ moveal #stack_end,%a6 | set base pointer
+ movw #0x3000,%sr | SUPV MODE,INTERRUPTS ON!!!
+
+#ifdef NEED_UNDERSCORES
+ jsr __Board_Initialize | initialize the board
+#else
+ jsr _Board_Initialize | initialize the board
+#endif
+
+ move.l #0,%sp@- | envp = NULL
+ move.l #0,%sp@- | argv = NULL
+ move.l #0,%sp@- | argc = NULL
+#ifdef NEED_UNDERSCORES
+ jsr ___libc_init | initialize the library and
+ | call main
+#else
+ jsr __libc_init | initialize the library and
+ | call main
+#endif
+ add.l #12,%sp
+
+ move.l #0,%sp@- | argc = NULL
+ jsr __exit | call the Board specific exit
+ addq.l #4,%sp
+
+ move.l initial_isp,%a0 | if __exit returns then we can
+ movec %a0,%isp | restore the initial values
+ move.l initial_usp,%a0
+ movec %a0,%usp
+ move.l initial_msp,%a0
+ movec %a0,%msp
+ move.w initial_sr,%sr
+ rts
+
+
+ .bss
+
+/*
+ * So initial stack registers and status register can be saved.
+ */
+
+#define DECLARE_SPACE(_name,_space,_align) \
+ .globl _name ; \
+ .align _align ; \
+_name##: .space _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)
+
+DECLARE_U32(initial_isp)
+DECLARE_U32(initial_msp)
+DECLARE_U32(initial_usp)
+DECLARE_U16(initial_sr)
+
+/*
+ * 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)
+
+DECLARE_SPACE(interrupt_stack_memory,0x1000,4)
+DECLARE_LABEL(interrupt_stack_end)