diff options
Diffstat (limited to 'libgloss/m32r')
29 files changed, 0 insertions, 6767 deletions
diff --git a/libgloss/m32r/Makefile.in b/libgloss/m32r/Makefile.in deleted file mode 100644 index 12a1be6..0000000 --- a/libgloss/m32r/Makefile.in +++ /dev/null @@ -1,144 +0,0 @@ -# Makefile for libgloss/m32r -# Copyright (c) 1996, 1998 Cygnus Support. -# All rights reserved. -# -# Redistribution and use in source and binary forms are permitted -# provided that the above copyright notice and this paragraph are -# duplicated in all such forms and that any documentation, -# advertising materials, and other materials related to such -# distribution and use acknowledge that the software was developed -# at Cygnus Support, Inc. Cygnus Support, Inc. may not be used to -# endorse or promote products derived from this software without -# specific prior written permission. -# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR -# IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED -# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - -DESTDIR = -VPATH = @srcdir@ @srcdir@/.. -srcdir = @srcdir@ -objdir = . -srcroot = $(srcdir)/../.. -objroot = $(objdir)/../.. - -host_alias = @host_alias@ -target_alias = @target_alias@ -prefix = @prefix@ -exec_prefix = @exec_prefix@ -bindir = @bindir@ -libdir = @libdir@ -tooldir = $(exec_prefix)/$(target_alias) - -TOP = ../.. -SRCTOP = ../.. - -# Multilib support variables. -# TOP is used instead of MULTI{BUILD,SRC}TOP. -MULTISRCTOP = -MULTIBUILDTOP = -MULTIDIRS = -MULTISUBDIR = -MULTIDO = true -MULTICLEAN = true - -INSTALL = @INSTALL@ -INSTALL_PROGRAM = @INSTALL_PROGRAM@ -INSTALL_DATA = @INSTALL_DATA@ - -SHELL = /bin/sh - -CC = @CC@ - -AS = @AS@ -AR = @AR@ -LD = @LD@ -RANLIB = @RANLIB@ - -AR_FLAGS = qv -BISON = bison -MAKEINFO = makeinfo - -.NOEXPORT: -MAKEOVERRIDES= - -TARGETDOC = ../../targetdep.tex - -CRT0 = crt0.o -GDBLIB = m32r-lib.o -GDBSTUB = m32r-stub.o -EVASCRIPT = eva.ld -STUBSCRIPT = eva-stub.ld - -GENERIC_LIBOBJS = \ - chmod.o close.o exit.o fstat.o getpid.o isatty.o kill.o lseek.o \ - open.o raise.o read.o sbrk.o stat.o unlink.o utime.o write.o - -LIBOBJS = trap0.o $(GENERIC_LIBOBJS) -LIBGLOSS = libgloss.a - -MONLIBOBJS = trapmon0.o $(GENERIC_LIBOBJS) -MONLIBGLOSS = libmon.a -MONSPECS = mon.specs - -# Host specific makefile fragment comes in here. -@host_makefile_frag@ - -all: $(CRT0) $(LIBGLOSS) $(MONLIBGLOSS) $(GDBLIB) $(GDBSTUB) - -libgloss.a: $(LIBOBJS) - $(AR) $(ARFLAGS) $@ $(LIBOBJS) - $(RANLIB) $@ - -libmon.a: $(MONLIBOBJS) - $(AR) $(ARFLAGS) $@ $(MONLIBOBJS) - $(RANLIB) $@ - -install: - mkdir -p $(DESTDIR)$(tooldir)/lib${MULTISUBDIR} - $(INSTALL_DATA) $(CRT0) $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$(CRT0) - $(INSTALL_DATA) $(LIBGLOSS) $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$(LIBGLOSS) - $(INSTALL_DATA) $(MONLIBGLOSS) $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$(MONLIBGLOSS) - $(INSTALL_DATA) $(GDBLIB) $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$(GDBLIB) - $(INSTALL_DATA) $(GDBSTUB) $(DESTDIR)$(tooldir)/lib${MULTISUBDIR}/$(GDBSTUB) - $(INSTALL_DATA) $(srcdir)/$(EVASCRIPT) $(DESTDIR)$(tooldir)/lib/$(EVASCRIPT) - $(INSTALL_DATA) $(srcdir)/$(STUBSCRIPT) $(DESTDIR)$(tooldir)/lib/$(STUBSCRIPT) - $(INSTALL_DATA) $(srcdir)/$(MONSPECS) $(DESTDIR)$(tooldir)/lib/$(MONSPECS) - -clean mostlyclean: - rm -f *~ *.[oa] - -distclean maintainer-clean realclean: clean - rm -f Makefile config.status - -info doc: -install-info: -clean-info: - -Makefile: Makefile.in config.status @host_makefile_frag_path@ - $(SHELL) config.status - -config.status: configure - $(SHELL) config.status --recheck - -# to support SunOS VPATH -crt0.o: crt0.S -m32r-lib.o: m32r-lib.c -m32r-stub.o: m32r-stub.c -chmod.o: chmod.c -close.o: close.c -exit.o: exit.c -fstat.o: fstat.c -getpid.o: getpid.c -isatty.o: isatty.c -kill.o: kill.c -lseek.o: lseek.c -open.o: open.c -raise.o: raise.c -read.o: read.c -sbrk.o: sbrk.c -stat.o: stat.c -unlink.o: unlink.c -utime.o: utime.c -write.o: write.c -trap0.o: trap0.S -trapmon0.o: trapmon0.c diff --git a/libgloss/m32r/aclocal.m4 b/libgloss/m32r/aclocal.m4 deleted file mode 100644 index b6cdfae..0000000 --- a/libgloss/m32r/aclocal.m4 +++ /dev/null @@ -1,344 +0,0 @@ -# generated automatically by aclocal 1.9.5 -*- Autoconf -*- - -# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, -# 2005 Free Software Foundation, Inc. -# This file is free software; 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When coming back to configure, we -# need to make the FD available again. -if test "$no_create" != yes; then - ac_cs_success=: - ac_config_status_args= - test "$silent" = yes && - ac_config_status_args="$ac_config_status_args --quiet" - exec 5>/dev/null - $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false - exec 5>>config.log - # Use ||, not &&, to avoid exiting from the if with $? = 1, which - # would make configure fail if this is the last instruction. - $ac_cs_success || { (exit 1); exit 1; } -fi - diff --git a/libgloss/m32r/configure.in b/libgloss/m32r/configure.in deleted file mode 100644 index aa3cf0c..0000000 --- a/libgloss/m32r/configure.in +++ /dev/null @@ -1,47 +0,0 @@ -dnl Process this file with autoconf to produce a configure script. -AC_PREREQ(2.59) -AC_INIT(crt0.S) - -AC_CANONICAL_SYSTEM -AC_ARG_PROGRAM - -if test "$srcdir" = "." ; then - mdir=`echo "${with_multisubdir}/" \ - | sed -e 's,\([[^/]][[^/]]*\),..,g' -e 's,^/$,,'` - AC_CONFIG_AUX_DIR(${mdir}../../..) -else - AC_CONFIG_AUX_DIR(${srcdir}/../..) -fi - -AC_PROG_INSTALL - -LIB_AC_PROG_CC -AS=${AS-as} -AC_SUBST(AS) -AR=${AR-ar} -AC_SUBST(AR) -LD=${LD-ld} -AC_SUBST(LD) -AC_PROG_RANLIB -LIB_AM_PROG_AS - -host_makefile_frag=${srcdir}/../config/default.mh - -dnl We have to assign the same value to other variables because autoconf -dnl doesn't provide a mechanism to substitute a replacement keyword with -dnl arbitrary data or pathnames. -dnl -host_makefile_frag_path=$host_makefile_frag -AC_SUBST(host_makefile_frag_path) -AC_SUBST_FILE(host_makefile_frag) - -AC_CONFIG_FILES(Makefile, -. ${srcdir}/../../config-ml.in, -srcdir=${srcdir} -target=${target} -with_multisubdir=${with_multisubdir} -ac_configure_args="${ac_configure_args} --enable-multilib" -CONFIG_SHELL=${CONFIG_SHELL-/bin/sh} -libgloss_topdir=${srcdir}/../.. -) -AC_OUTPUT diff --git a/libgloss/m32r/crt0.S b/libgloss/m32r/crt0.S deleted file mode 100644 index 7c22f5a..0000000 --- a/libgloss/m32r/crt0.S +++ /dev/null @@ -1,52 +0,0 @@ - .text - .balign 4 - .global _start -_start: - - seth sp, #shigh(_stack) - add3 sp, sp, #low(_stack) - ldi fp, #0 - -# Clear the BSS. Do it in two parts for efficiency: longwords first -# for most of it, then the remaining 0 to 3 bytes. - - seth r2, #shigh(__bss_start) - add3 r2, r2, #low(__bss_start); R2 = start of BSS - seth r3, #shigh(_end) - add3 r3, r3, #low(_end) ; R3 = end of BSS + 1 - - sub r3, r2 ; R3 = BSS size in bytes - mv r4, r3 - srli r4, #2 ; R4 = BSS size in longwords (rounded down) - ldi r1, #0 ; clear R1 for longword store - addi r2, #-4 ; account for pre-inc store - beqz r4, .Lendloop1 ; any more to go? -.Lloop1: - st r1, @+r2 ; yep, zero out another longword - addi r4, #-1 ; decrement count - bnez r4, .Lloop1 ; go do some more -.Lendloop1: - and3 r4, r3, #3 ; get no. of remaining BSS bytes to clear - addi r2, #4 ; account for pre-inc store - beqz r4, .Lendloop2 ; any more to go? -.Lloop2: - stb r1, @r2 ; yep, zero out another byte - addi r2, #1 ; bump address - addi r4, #-1 ; decrement count - bnez r4, .Lloop2 ; go do some more -.Lendloop2: - -# Run code in the .init section. -# This will queue the .fini section to be run with atexit. - - bl __init - -# Call main, then exit. - - bl main - bl exit - -# If that fails just loop. - -.Lexit: - bra .Lexit diff --git a/libgloss/m32r/eit.h b/libgloss/m32r/eit.h deleted file mode 100644 index ef51c08..0000000 --- a/libgloss/m32r/eit.h +++ /dev/null @@ -1,13 +0,0 @@ -/* M32R libgloss EIT interface. - Copyright (C) 1998, Cygnus Solutions. - - At present we only document trap 0, the syscall interface. - In the future this can hold further EIT related stuff. - [The m32r manuals use the acronym EIT: exception, interrupt, trap.] */ - -#include <reent.h> - -int __trap0 (int function, int p1, int p2, int p3, struct _reent *r); - -#define TRAP0(f, p1, p2, p3) \ -__trap0 (f, (int) (p1), (int) (p2), (int) (p3), _REENT) diff --git a/libgloss/m32r/eva-stub.ld b/libgloss/m32r/eva-stub.ld deleted file mode 100644 index 34c341c..0000000 --- a/libgloss/m32r/eva-stub.ld +++ /dev/null @@ -1,111 +0,0 @@ -OUTPUT_FORMAT("elf32-m32r", "elf32-m32r", - "elf32-m32r") -OUTPUT_ARCH(m32r) -ENTRY(_start) -/* Do we need any of these for elf? - __DYNAMIC = 0; */ - -INPUT(m32r-stub.o) -INPUT(m32r-lib.o) -INPUT(-lgloss) - -SECTIONS -{ - /* Read-only sections, merged into text segment: */ - . = 0x200000; - .interp : { *(.interp) } - .hash : { *(.hash) } - .dynsym : { *(.dynsym) } - .dynstr : { *(.dynstr) } - .rel.text : { *(.rel.text) } - .rela.text : { *(.rela.text) } - .rel.data : { *(.rel.data) } - .rela.data : { *(.rela.data) } - .rel.rodata : { *(.rel.rodata) } - .rela.rodata : { *(.rela.rodata) } - .rel.got : { *(.rel.got) } - .rela.got : { *(.rela.got) } - .rel.ctors : { *(.rel.ctors) } - .rela.ctors : { *(.rela.ctors) } - .rel.dtors : { *(.rel.dtors) } - .rela.dtors : { *(.rela.dtors) } - .rel.init : { *(.rel.init) } - .rela.init : { *(.rela.init) } - .rel.fini : { *(.rel.fini) } - .rela.fini : { *(.rela.fini) } - .rel.bss : { *(.rel.bss) } - .rela.bss : { *(.rela.bss) } - .rel.plt : { *(.rel.plt) } - .rela.plt : { *(.rela.plt) } - .init : { *(.init) } = 0 - .plt : { *(.plt) } - .text : - { - *(.text) - /* .gnu.warning sections are handled specially by elf32.em. */ - *(.gnu.warning) - *(.gnu.linkonce.t*) - } = 0 - _etext = .; - PROVIDE (etext = .); - .fini : { *(.fini) } = 0 - .rodata : { *(.rodata) *(.gnu.linkonce.r*) } - .rodata1 : { *(.rodata1) } - /* Adjust the address for the data segment. We want to adjust up to - the same address within the page on the next page up. */ - . = ALIGN(32) + (ALIGN(8) & (32 - 1)); - .data : - { - *(.data) - *(.gnu.linkonce.d*) - CONSTRUCTORS - } - .data1 : { *(.data1) } - .ctors : - { - *(.ctors) - } - .dtors : - { - *(.dtors) - } - .got : { *(.got.plt) *(.got) } - .dynamic : { *(.dynamic) } - /* We want the small data sections together, so single-instruction offsets - can access them all, and initialized data all before uninitialized, so - we can shorten the on-disk segment size. */ - .sdata : { *(.sdata) } - _edata = .; - PROVIDE (edata = .); - __bss_start = .; - .sbss : { *(.sbss) *(.scommon) } - .bss : - { - *(.dynbss) - *(.bss) - *(COMMON) - } - _end = . ; - PROVIDE (end = .); - /* Stabs debugging sections. */ - .stab 0 : { *(.stab) } - .stabstr 0 : { *(.stabstr) } - .stab.excl 0 : { *(.stab.excl) } - .stab.exclstr 0 : { *(.stab.exclstr) } - .stab.index 0 : { *(.stab.index) } - .stab.indexstr 0 : { *(.stab.indexstr) } - .comment 0 : { *(.comment) } - /* DWARF debug sections. - Symbols in the .debug DWARF section are relative to the beginning of the - section so we begin .debug at 0. It's not clear yet what needs to happen - for the others. */ - .debug 0 : { *(.debug) } - .debug_srcinfo 0 : { *(.debug_srcinfo) } - .debug_aranges 0 : { *(.debug_aranges) } - .debug_pubnames 0 : { *(.debug_pubnames) } - .debug_sfnames 0 : { *(.debug_sfnames) } - .line 0 : { *(.line) } - .stack 0x207ffc : { _stack = .; *(.stack) } - /* These must appear regardless of . */ -} - diff --git a/libgloss/m32r/eva.ld b/libgloss/m32r/eva.ld deleted file mode 100644 index ee66464..0000000 --- a/libgloss/m32r/eva.ld +++ /dev/null @@ -1,97 +0,0 @@ -OUTPUT_FORMAT("elf32-m32r", "elf32-m32r", - "elf32-m32r") -OUTPUT_ARCH(m32r) -ENTRY(_start) -/* Do we need any of these for elf? - __DYNAMIC = 0; */ - -INPUT(-lgloss) - -SECTIONS -{ - /* Read-only sections, merged into text segment: */ - . = 0x208000; - .interp : { *(.interp) } - .hash : { *(.hash) } - .dynsym : { *(.dynsym) } - .dynstr : { *(.dynstr) } - .rel.text : { *(.rel.text) } - .rela.text : { *(.rela.text) } - .rel.data : { *(.rel.data) } - .rela.data : { *(.rela.data) } - .rel.rodata : { *(.rel.rodata) } - .rela.rodata : { *(.rela.rodata) } - .rel.got : { *(.rel.got) } - .rela.got : { *(.rela.got) } - .rel.ctors : { *(.rel.ctors) } - .rela.ctors : { *(.rela.ctors) } - .rel.dtors : { *(.rel.dtors) } - .rela.dtors : { *(.rela.dtors) } - .rel.init : { *(.rel.init) } - .rela.init : { *(.rela.init) } - .rel.fini : { *(.rel.fini) } - .rela.fini : { *(.rela.fini) } - .rel.bss : { *(.rel.bss) } - .rela.bss : { *(.rela.bss) } - .rel.plt : { *(.rel.plt) } - .rela.plt : { *(.rela.plt) } - .init : { *(.init) } =0 - .plt : { *(.plt) } - .text : - { - *(.text) - /* .gnu.warning sections are handled specially by elf32.em. */ - *(.gnu.warning) - *(.gnu.linkonce.t*) - } =0 - _etext = .; - PROVIDE (etext = .); - .fini : { *(.fini) } =0 - .rodata : { *(.rodata) *(.gnu.linkonce.r*) } - .rodata1 : { *(.rodata1) } - /* Adjust the address for the data segment. We want to adjust up to - the same address within the page on the next page up. */ - . = ALIGN(32) + (ALIGN(8) & (32 - 1)); - .data : - { - *(.data) - *(.gnu.linkonce.d*) - CONSTRUCTORS - } - .data1 : { *(.data1) } - .ctors : { *(.ctors) } - .dtors : { *(.dtors) } - .got : { *(.got.plt) *(.got)} - .dynamic : { *(.dynamic) } - /* We want the small data sections together, so single-instruction offsets - can access them all, and initialized data all before uninitialized, so - we can shorten the on-disk segment size. */ - .sdata : { *(.sdata) } - _edata = .; - PROVIDE (edata = .); - __bss_start = .; - .sbss : { *(.sbss) *(.scommon) } - .bss : { *(.dynbss) *(.bss) *(COMMON) } - _end = . ; - PROVIDE (end = .); - /* Stabs debugging sections. */ - .stab 0 : { *(.stab) } - .stabstr 0 : { *(.stabstr) } - .stab.excl 0 : { *(.stab.excl) } - .stab.exclstr 0 : { *(.stab.exclstr) } - .stab.index 0 : { *(.stab.index) } - .stab.indexstr 0 : { *(.stab.indexstr) } - .comment 0 : { *(.comment) } - /* DWARF debug sections. - Symbols in the .debug DWARF section are relative to the beginning of the - section so we begin .debug at 0. It's not clear yet what needs to happen - for the others. */ - .debug 0 : { *(.debug) } - .debug_srcinfo 0 : { *(.debug_srcinfo) } - .debug_aranges 0 : { *(.debug_aranges) } - .debug_pubnames 0 : { *(.debug_pubnames) } - .debug_sfnames 0 : { *(.debug_sfnames) } - .line 0 : { *(.line) } - .stack 0x5ffffc : { _stack = .; *(.stack) } - /* These must appear regardless of . */ -} diff --git a/libgloss/m32r/exit.c b/libgloss/m32r/exit.c deleted file mode 100644 index 5251f0d..0000000 --- a/libgloss/m32r/exit.c +++ /dev/null @@ -1,10 +0,0 @@ -#include <sys/types.h> -#include <sys/stat.h> -#include "syscall.h" -#include "eit.h" - -void -_exit (n) -{ - TRAP0 (SYS_exit, n, 0, 0); -} diff --git a/libgloss/m32r/fstat.c b/libgloss/m32r/fstat.c deleted file mode 100644 index 1f91828..0000000 --- a/libgloss/m32r/fstat.c +++ /dev/null @@ -1,11 +0,0 @@ -#include <sys/types.h> -#include <sys/stat.h> -#include "syscall.h" -#include "eit.h" - -int -_fstat (int file, struct stat *st) -{ - st->st_mode = S_IFCHR; - return 0; -} diff --git a/libgloss/m32r/getpid.c b/libgloss/m32r/getpid.c deleted file mode 100644 index ff6e902..0000000 --- a/libgloss/m32r/getpid.c +++ /dev/null @@ -1,6 +0,0 @@ - -int -_getpid (int n) -{ - return 1; -} diff --git a/libgloss/m32r/isatty.c b/libgloss/m32r/isatty.c deleted file mode 100644 index cc9bfe1..0000000 --- a/libgloss/m32r/isatty.c +++ /dev/null @@ -1,8 +0,0 @@ - -/* FIXME: can we not nuke the 10,000 copies of this function - and fudge things (which is all this function does) in _fstat? */ -int -_isatty (int fd) -{ - return 1; -} diff --git a/libgloss/m32r/kill.c b/libgloss/m32r/kill.c deleted file mode 100644 index d7aaee9..0000000 --- a/libgloss/m32r/kill.c +++ /dev/null @@ -1,9 +0,0 @@ -#include <sys/types.h> -#include <sys/stat.h> -#include "syscall.h" -#include "eit.h" - -_kill (n, m) -{ - return TRAP0 (SYS_exit, 0xdead, 0, 0); -} diff --git a/libgloss/m32r/lseek.c b/libgloss/m32r/lseek.c deleted file mode 100644 index 1fbb5d0..0000000 --- a/libgloss/m32r/lseek.c +++ /dev/null @@ -1,10 +0,0 @@ -#include <sys/types.h> -#include <sys/stat.h> -#include "syscall.h" -#include "eit.h" - -int -_lseek (int file, int ptr, int dir) -{ - return TRAP0 (SYS_lseek, file, ptr, dir); -} diff --git a/libgloss/m32r/m32r-lib.c b/libgloss/m32r/m32r-lib.c deleted file mode 100644 index 1d2d291..0000000 --- a/libgloss/m32r/m32r-lib.c +++ /dev/null @@ -1,147 +0,0 @@ -/* Stand-alone library for M32R-EVA board. - * - * Copyright (c) 1996, 1998 Cygnus Support - * - * The authors hereby grant permission to use, copy, modify, distribute, - * and license this software and its documentation for any purpose, provided - * that existing copyright notices are retained in all copies and that this - * notice is included verbatim in any distributions. No written agreement, - * license, or royalty fee is required for any of the authorized uses. - * Modifications to this software may be copyrighted by their authors - * and need not follow the licensing terms described here, provided that - * the new terms are clearly indicated on the first page of each file where - * they apply. - */ - -/* #define REVC to enable handling of the original RevC board, - which is no longer the default, nor is it supported. */ - -#ifndef REVC - -/* Serial I/O routines for MSA2000G01 board */ -#define UART_INCHAR_ADDR 0xff004009 -#define UART_OUTCHR_ADDR 0xff004007 -#define UART_STATUS_ADDR 0xff004002 - -#else - -/* Serial I/O routines for M32R-EVA board */ -#define UART_INCHAR_ADDR 0xff102013 -#define UART_OUTCHR_ADDR 0xff10200f -#define UART_STATUS_ADDR 0xff102006 - -#endif - -#define UART_INPUT_EMPTY 0x4 -#define UART_OUTPUT_EMPTY 0x1 - -static volatile char *rx_port = (unsigned char *) UART_INCHAR_ADDR; -static volatile char *tx_port = (char *) UART_OUTCHR_ADDR; -static volatile short *rx_status = (short *) UART_STATUS_ADDR; -static volatile short *tx_status = (short *) UART_STATUS_ADDR; - -static int -rx_rdy() -{ -#ifndef REVC - return (*rx_status & UART_INPUT_EMPTY); -#else - return !(*rx_status & UART_INPUT_EMPTY); -#endif -} - -static int -tx_rdy() -{ - return (*tx_status & UART_OUTPUT_EMPTY); -} - -static unsigned char -rx_uchar() -{ - return *rx_port; -} - -void -tx_char(char c) -{ - *tx_port = c; -} - -int -getDebugChar() -{ - while (!rx_rdy()) - ; - return rx_uchar(); -} - -void -putDebugChar(int c) -{ - while (!tx_rdy()) - ; - tx_char(c); -} - -void mesg(char *p) -{ - while (*p) - { - if (*p == '\n') - putDebugChar('\r'); - putDebugChar(*p++); - } -} - -void phex(long x) -{ - char buf[9]; - int i; - - buf[8] = '\0'; - for (i = 7; i >= 0; i--) - { - char c = x & 0x0f; - buf[i] = c < 10 ? c + '0' : c - 10 + 'A'; - x >>= 4; - } - mesg(buf); -} - -/* - * These routines set and get exception handlers. They look a little - * funny because the M32R uses branch instructions in its exception - * vectors, not just the addresses. The instruction format used is - * BRA pcdisp24. - */ - -#define TRAP_VECTOR_BASE_ADDR 0x00000040 - -/* Setup trap TT to go to ROUTINE. */ -void -exceptionHandler (int tt, unsigned long routine) -{ -#ifndef REVC - unsigned long *tb = (unsigned long *) TRAP_VECTOR_BASE_ADDR; - tb[tt] = (0xff000000 | ((routine - (unsigned long) (&tb[tt])) >> 2)); -#else - unsigned long *tb = 0; /* Trap vector base address */ - - tb[tt] = ((routine >> 2) | 0xff000000) - tt; -#endif -} - -/* Return the address of trap TT handler */ -unsigned long -getExceptionHandler (int tt) -{ -#ifndef REVC - unsigned long *tb = (unsigned long *) TRAP_VECTOR_BASE_ADDR; - return ((tb[tt] & ~0xff000000) << 2) + (unsigned long) (&tb[tt]); -#else - unsigned long *tb = 0; /* Trap vector base address */ - - return ((tb[tt] + tt) | 0xff000000) << 2; -#endif -} diff --git a/libgloss/m32r/m32r-stub.c b/libgloss/m32r/m32r-stub.c deleted file mode 100644 index 4d54f72..0000000 --- a/libgloss/m32r/m32r-stub.c +++ /dev/null @@ -1,1779 +0,0 @@ -/**************************************************************************** - - THIS SOFTWARE IS NOT COPYRIGHTED - - HP offers the following for use in the public domain. HP makes no - warranty with regard to the software or it's performance and the - user accepts the software "AS IS" with all faults. - - HP DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD - TO THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES - OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - -****************************************************************************/ - -/**************************************************************************** - * Header: remcom.c,v 1.34 91/03/09 12:29:49 glenne Exp $ - * - * Module name: remcom.c $ - * Revision: 1.34 $ - * Date: 91/03/09 12:29:49 $ - * Contributor: Lake Stevens Instrument Division$ - * - * Description: low level support for gdb debugger. $ - * - * Considerations: only works on target hardware $ - * - * Written by: Glenn Engel $ - * ModuleState: Experimental $ - * - * NOTES: See Below $ - * - * Modified for M32R by Michael Snyder, Cygnus Support. - * - * To enable debugger support, two things need to happen. One, a - * call to set_debug_traps() is necessary in order to allow any breakpoints - * or error conditions to be properly intercepted and reported to gdb. - * Two, a breakpoint needs to be generated to begin communication. This - * is most easily accomplished by a call to breakpoint(). Breakpoint() - * simulates a breakpoint by executing a trap #1. - * - * The external function exceptionHandler() is - * used to attach a specific handler to a specific M32R vector number. - * It should use the same privilege level it runs at. It should - * install it as an interrupt gate so that interrupts are masked - * while the handler runs. - * - * Because gdb will sometimes write to the stack area to execute function - * calls, this program cannot rely on using the supervisor stack so it - * uses it's own stack area reserved in the int array remcomStack. - * - ************* - * - * The following gdb commands are supported: - * - * command function Return value - * - * g return the value of the CPU registers hex data or ENN - * G set the value of the CPU registers OK or ENN - * - * mAA..AA,LLLL Read LLLL bytes at address AA..AA hex data or ENN - * MAA..AA,LLLL: Write LLLL bytes at address AA.AA OK or ENN - * XAA..AA,LLLL: Write LLLL binary bytes at address OK or ENN - * AA..AA - * - * c Resume at current address SNN ( signal NN) - * cAA..AA Continue at address AA..AA SNN - * - * s Step one instruction SNN - * sAA..AA Step one instruction from AA..AA SNN - * - * k kill - * - * ? What was the last sigval ? SNN (signal NN) - * - * All commands and responses are sent with a packet which includes a - * checksum. A packet consists of - * - * $<packet info>#<checksum>. - * - * where - * <packet info> :: <characters representing the command or response> - * <checksum> :: <two hex digits computed as modulo 256 sum of <packetinfo>> - * - * When a packet is received, it is first acknowledged with either '+' or '-'. - * '+' indicates a successful transfer. '-' indicates a failed transfer. - * - * Example: - * - * Host: Reply: - * $m0,10#2a +$00010203040506070809101112131415#42 - * - ****************************************************************************/ - - -/************************************************************************ - * - * external low-level support routines - */ -extern void putDebugChar (); /* write a single character */ -extern int getDebugChar (); /* read and return a single char */ -extern void exceptionHandler (); /* assign an exception handler */ - -/***************************************************************************** - * BUFMAX defines the maximum number of characters in inbound/outbound buffers - * at least NUMREGBYTES*2 are needed for register packets - */ -#define BUFMAX 400 - -static char initialized; /* boolean flag. != 0 means we've been initialized */ - -int remote_debug; -/* debug > 0 prints ill-formed commands in valid packets & checksum errors */ - -static const unsigned char hexchars[] = "0123456789abcdef"; - -#define NUMREGS 24 - -/* Number of bytes of registers. */ -#define NUMREGBYTES (NUMREGS * 4) -enum regnames -{ R0, R1, R2, R3, R4, R5, R6, R7, - R8, R9, R10, R11, R12, R13, R14, R15, - PSW, CBR, SPI, SPU, BPC, PC, ACCL, ACCH -}; - -enum SYS_calls -{ - SYS_null, - SYS_exit, - SYS_open, - SYS_close, - SYS_read, - SYS_write, - SYS_lseek, - SYS_unlink, - SYS_getpid, - SYS_kill, - SYS_fstat, - SYS_sbrk, - SYS_fork, - SYS_execve, - SYS_wait4, - SYS_link, - SYS_chdir, - SYS_stat, - SYS_utime, - SYS_chown, - SYS_chmod, - SYS_time, - SYS_pipe -}; - -static int registers[NUMREGS]; - -#define STACKSIZE 8096 -static unsigned char remcomInBuffer[BUFMAX]; -static unsigned char remcomOutBuffer[BUFMAX]; -static int remcomStack[STACKSIZE / sizeof (int)]; -static int *stackPtr = &remcomStack[STACKSIZE / sizeof (int) - 1]; - -static unsigned int save_vectors[18]; /* previous exception vectors */ - -/* Indicate to caller of mem2hex or hex2mem that there has been an error. */ -static volatile int mem_err = 0; - -/* Store the vector number here (since GDB only gets the signal - number through the usual means, and that's not very specific). */ -int gdb_m32r_vector = -1; - -#if 0 -#include "syscall.h" /* for SYS_exit, SYS_write etc. */ -#endif - -/* Global entry points: - */ - -extern void handle_exception (int); -extern void set_debug_traps (void); -extern void breakpoint (void); - -/* Local functions: - */ - -static int computeSignal (int); -static void putpacket (unsigned char *); -static unsigned char *getpacket (void); - -static unsigned char *mem2hex (unsigned char *, unsigned char *, int, int); -static unsigned char *hex2mem (unsigned char *, unsigned char *, int, int); -static int hexToInt (unsigned char **, int *); -static unsigned char *bin2mem (unsigned char *, unsigned char *, int, int); -static void stash_registers (void); -static void restore_registers (void); -static int prepare_to_step (int); -static int finish_from_step (void); -static unsigned long crc32 (unsigned char *, int, unsigned long); - -static void gdb_error (char *, char *); -static int gdb_putchar (int), gdb_puts (char *), gdb_write (char *, int); - -static unsigned char *strcpy (unsigned char *, const unsigned char *); -static int strlen (const unsigned char *); - -/* - * This function does all command procesing for interfacing to gdb. - */ - -void -handle_exception (int exceptionVector) -{ - int sigval, stepping; - int addr, length, i; - unsigned char *ptr; - unsigned char buf[16]; - int binary; - - if (!finish_from_step ()) - return; /* "false step": let the target continue */ - - gdb_m32r_vector = exceptionVector; - - if (remote_debug) - { - mem2hex ((unsigned char *) &exceptionVector, buf, 4, 0); - gdb_error ("Handle exception %s, ", buf); - mem2hex ((unsigned char *) ®isters[PC], buf, 4, 0); - gdb_error ("PC == 0x%s\n", buf); - } - - /* reply to host that an exception has occurred */ - sigval = computeSignal (exceptionVector); - - ptr = remcomOutBuffer; - - *ptr++ = 'T'; /* notify gdb with signo, PC, FP and SP */ - *ptr++ = hexchars[sigval >> 4]; - *ptr++ = hexchars[sigval & 0xf]; - - *ptr++ = hexchars[PC >> 4]; - *ptr++ = hexchars[PC & 0xf]; - *ptr++ = ':'; - ptr = mem2hex ((unsigned char *) ®isters[PC], ptr, 4, 0); /* PC */ - *ptr++ = ';'; - - *ptr++ = hexchars[R13 >> 4]; - *ptr++ = hexchars[R13 & 0xf]; - *ptr++ = ':'; - ptr = mem2hex ((unsigned char *) ®isters[R13], ptr, 4, 0); /* FP */ - *ptr++ = ';'; - - *ptr++ = hexchars[R15 >> 4]; - *ptr++ = hexchars[R15 & 0xf]; - *ptr++ = ':'; - ptr = mem2hex ((unsigned char *) ®isters[R15], ptr, 4, 0); /* SP */ - *ptr++ = ';'; - *ptr++ = 0; - - if (exceptionVector == 0) /* simulated SYS call stuff */ - { - mem2hex ((unsigned char *) ®isters[PC], buf, 4, 0); - switch (registers[R0]) - { - case SYS_exit: - gdb_error ("Target program has exited at %s\n", buf); - ptr = remcomOutBuffer; - *ptr++ = 'W'; - sigval = registers[R1] & 0xff; - *ptr++ = hexchars[sigval >> 4]; - *ptr++ = hexchars[sigval & 0xf]; - *ptr++ = 0; - break; - case SYS_open: - gdb_error ("Target attempts SYS_open call at %s\n", buf); - break; - case SYS_close: - gdb_error ("Target attempts SYS_close call at %s\n", buf); - break; - case SYS_read: - gdb_error ("Target attempts SYS_read call at %s\n", buf); - break; - case SYS_write: - if (registers[R1] == 1 || /* write to stdout */ - registers[R1] == 2) /* write to stderr */ - { /* (we can do that) */ - registers[R0] = - gdb_write ((void *) registers[R2], registers[R3]); - return; - } - else - gdb_error ("Target attempts SYS_write call at %s\n", buf); - break; - case SYS_lseek: - gdb_error ("Target attempts SYS_lseek call at %s\n", buf); - break; - case SYS_unlink: - gdb_error ("Target attempts SYS_unlink call at %s\n", buf); - break; - case SYS_getpid: - gdb_error ("Target attempts SYS_getpid call at %s\n", buf); - break; - case SYS_kill: - gdb_error ("Target attempts SYS_kill call at %s\n", buf); - break; - case SYS_fstat: - gdb_error ("Target attempts SYS_fstat call at %s\n", buf); - break; - default: - gdb_error ("Target attempts unknown SYS call at %s\n", buf); - break; - } - } - - putpacket (remcomOutBuffer); - - stepping = 0; - - while (1 == 1) - { - remcomOutBuffer[0] = 0; - ptr = getpacket (); - binary = 0; - switch (*ptr++) - { - default: /* Unknown code. Return an empty reply message. */ - break; - case 'R': - if (hexToInt (&ptr, &addr)) - registers[PC] = addr; - strcpy (remcomOutBuffer, "OK"); - break; - case '!': - strcpy (remcomOutBuffer, "OK"); - break; - case 'X': /* XAA..AA,LLLL:<binary data>#cs */ - binary = 1; - case 'M': /* MAA..AA,LLLL: Write LLLL bytes at address AA.AA return OK */ - /* TRY TO READ '%x,%x:'. IF SUCCEED, SET PTR = 0 */ - { - if (hexToInt (&ptr, &addr)) - if (*(ptr++) == ',') - if (hexToInt (&ptr, &length)) - if (*(ptr++) == ':') - { - mem_err = 0; - if (binary) - bin2mem (ptr, (unsigned char *) addr, length, 1); - else - hex2mem (ptr, (unsigned char *) addr, length, 1); - if (mem_err) - { - strcpy (remcomOutBuffer, "E03"); - gdb_error ("memory fault", ""); - } - else - { - strcpy (remcomOutBuffer, "OK"); - } - ptr = 0; - } - if (ptr) - { - strcpy (remcomOutBuffer, "E02"); - } - } - break; - case 'm': /* mAA..AA,LLLL Read LLLL bytes at address AA..AA */ - /* TRY TO READ %x,%x. IF SUCCEED, SET PTR = 0 */ - if (hexToInt (&ptr, &addr)) - if (*(ptr++) == ',') - if (hexToInt (&ptr, &length)) - { - ptr = 0; - mem_err = 0; - mem2hex ((unsigned char *) addr, remcomOutBuffer, length, - 1); - if (mem_err) - { - strcpy (remcomOutBuffer, "E03"); - gdb_error ("memory fault", ""); - } - } - if (ptr) - { - strcpy (remcomOutBuffer, "E01"); - } - break; - case '?': - remcomOutBuffer[0] = 'S'; - remcomOutBuffer[1] = hexchars[sigval >> 4]; - remcomOutBuffer[2] = hexchars[sigval % 16]; - remcomOutBuffer[3] = 0; - break; - case 'd': - remote_debug = !(remote_debug); /* toggle debug flag */ - break; - case 'g': /* return the value of the CPU registers */ - mem2hex ((unsigned char *) registers, remcomOutBuffer, NUMREGBYTES, - 0); - break; - case 'P': /* set the value of a single CPU register - return OK */ - { - int regno; - - if (hexToInt (&ptr, ®no) && *ptr++ == '=') - if (regno >= 0 && regno < NUMREGS) - { - int stackmode; - - hex2mem (ptr, (unsigned char *) ®isters[regno], 4, 0); - /* - * Since we just changed a single CPU register, let's - * make sure to keep the several stack pointers consistant. - */ - stackmode = registers[PSW] & 0x80; - if (regno == R15) /* stack pointer changed */ - { /* need to change SPI or SPU */ - if (stackmode == 0) - registers[SPI] = registers[R15]; - else - registers[SPU] = registers[R15]; - } - else if (regno == SPU) /* "user" stack pointer changed */ - { - if (stackmode != 0) /* stack in user mode: copy SP */ - registers[R15] = registers[SPU]; - } - else if (regno == SPI) /* "interrupt" stack pointer changed */ - { - if (stackmode == 0) /* stack in interrupt mode: copy SP */ - registers[R15] = registers[SPI]; - } - else if (regno == PSW) /* stack mode may have changed! */ - { /* force SP to either SPU or SPI */ - if (stackmode == 0) /* stack in user mode */ - registers[R15] = registers[SPI]; - else /* stack in interrupt mode */ - registers[R15] = registers[SPU]; - } - strcpy (remcomOutBuffer, "OK"); - break; - } - strcpy (remcomOutBuffer, "E01"); - break; - } - case 'G': /* set the value of the CPU registers - return OK */ - hex2mem (ptr, (unsigned char *) registers, NUMREGBYTES, 0); - strcpy (remcomOutBuffer, "OK"); - break; - case 's': /* sAA..AA Step one instruction from AA..AA(optional) */ - stepping = 1; - case 'c': /* cAA..AA Continue from address AA..AA(optional) */ - /* try to read optional parameter, pc unchanged if no parm */ - if (hexToInt (&ptr, &addr)) - registers[PC] = addr; - - if (stepping) /* single-stepping */ - { - if (!prepare_to_step (0)) /* set up for single-step */ - { - /* prepare_to_step has already emulated the target insn: - Send SIGTRAP to gdb, don't resume the target at all. */ - ptr = remcomOutBuffer; - *ptr++ = 'T'; /* Simulate stopping with SIGTRAP */ - *ptr++ = '0'; - *ptr++ = '5'; - - *ptr++ = hexchars[PC >> 4]; /* send PC */ - *ptr++ = hexchars[PC & 0xf]; - *ptr++ = ':'; - ptr = mem2hex ((unsigned char *) ®isters[PC], ptr, 4, 0); - *ptr++ = ';'; - - *ptr++ = hexchars[R13 >> 4]; /* send FP */ - *ptr++ = hexchars[R13 & 0xf]; - *ptr++ = ':'; - ptr = - mem2hex ((unsigned char *) ®isters[R13], ptr, 4, 0); - *ptr++ = ';'; - - *ptr++ = hexchars[R15 >> 4]; /* send SP */ - *ptr++ = hexchars[R15 & 0xf]; - *ptr++ = ':'; - ptr = - mem2hex ((unsigned char *) ®isters[R15], ptr, 4, 0); - *ptr++ = ';'; - *ptr++ = 0; - - break; - } - } - else /* continuing, not single-stepping */ - { - /* OK, about to do a "continue". First check to see if the - target pc is on an odd boundary (second instruction in the - word). If so, we must do a single-step first, because - ya can't jump or return back to an odd boundary! */ - if ((registers[PC] & 2) != 0) - prepare_to_step (1); - } - - return; - - case 'D': /* Detach */ -#if 0 - /* I am interpreting this to mean, release the board from control - by the remote stub. To do this, I am restoring the original - (or at least previous) exception vectors. - */ - for (i = 0; i < 18; i++) - exceptionHandler (i, save_vectors[i]); - putpacket ("OK"); - return; /* continue the inferior */ -#else - strcpy (remcomOutBuffer, "OK"); - break; -#endif - case 'q': - if (*ptr++ == 'C' && - *ptr++ == 'R' && *ptr++ == 'C' && *ptr++ == ':') - { - unsigned long start, len, our_crc; - - if (hexToInt (&ptr, (int *) &start) && - *ptr++ == ',' && hexToInt (&ptr, (int *) &len)) - { - remcomOutBuffer[0] = 'C'; - our_crc = crc32 ((unsigned char *) start, len, 0xffffffff); - mem2hex ((char *) &our_crc, - &remcomOutBuffer[1], sizeof (long), 0); - } /* else do nothing */ - } /* else do nothing */ - break; - - case 'k': /* kill the program */ - continue; - } /* switch */ - - /* reply to the request */ - putpacket (remcomOutBuffer); - } -} - -/* qCRC support */ - -/* Table used by the crc32 function to calcuate the checksum. */ -static unsigned long crc32_table[256] = { 0, 0 }; - -static unsigned long -crc32 (unsigned char *buf, int len, unsigned long crc) -{ - if (!crc32_table[1]) - { - /* Initialize the CRC table and the decoding table. */ - int i, j; - unsigned long c; - - for (i = 0; i < 256; i++) - { - for (c = i << 24, j = 8; j > 0; --j) - c = c & 0x80000000 ? (c << 1) ^ 0x04c11db7 : (c << 1); - crc32_table[i] = c; - } - } - - while (len--) - { - crc = (crc << 8) ^ crc32_table[((crc >> 24) ^ *buf) & 255]; - buf++; - } - return crc; -} - -static int -hex (unsigned char ch) -{ - if ((ch >= 'a') && (ch <= 'f')) - return (ch - 'a' + 10); - if ((ch >= '0') && (ch <= '9')) - return (ch - '0'); - if ((ch >= 'A') && (ch <= 'F')) - return (ch - 'A' + 10); - return (-1); -} - -/* scan for the sequence $<data>#<checksum> */ - -unsigned char * -getpacket (void) -{ - unsigned char *buffer = &remcomInBuffer[0]; - unsigned char checksum; - unsigned char xmitcsum; - int count; - char ch; - - while (1) - { - /* wait around for the start character, ignore all other characters */ - while ((ch = getDebugChar ()) != '$') - ; - - retry: - checksum = 0; - xmitcsum = -1; - count = 0; - - /* now, read until a # or end of buffer is found */ - while (count < BUFMAX - 1) - { - ch = getDebugChar (); - if (ch == '$') - goto retry; - if (ch == '#') - break; - checksum = checksum + ch; - buffer[count] = ch; - count = count + 1; - } - buffer[count] = 0; - - if (ch == '#') - { - ch = getDebugChar (); - xmitcsum = hex (ch) << 4; - ch = getDebugChar (); - xmitcsum += hex (ch); - - if (checksum != xmitcsum) - { - if (remote_debug) - { - unsigned char buf[16]; - - mem2hex ((unsigned char *) &checksum, buf, 4, 0); - gdb_error ("Bad checksum: my count = %s, ", buf); - mem2hex ((unsigned char *) &xmitcsum, buf, 4, 0); - gdb_error ("sent count = %s\n", buf); - gdb_error (" -- Bad buffer: \"%s\"\n", buffer); - } - putDebugChar ('-'); /* failed checksum */ - } - else - { - putDebugChar ('+'); /* successful transfer */ - - /* if a sequence char is present, reply the sequence ID */ - if (buffer[2] == ':') - { - putDebugChar (buffer[0]); - putDebugChar (buffer[1]); - - return &buffer[3]; - } - - return &buffer[0]; - } - } - } -} - -/* send the packet in buffer. */ - -static void -putpacket (unsigned char *buffer) -{ - unsigned char checksum; - int count; - char ch; - - /* $<packet info>#<checksum>. */ - do - { - putDebugChar ('$'); - checksum = 0; - count = 0; - - while (ch = buffer[count]) - { - putDebugChar (ch); - checksum += ch; - count += 1; - } - putDebugChar ('#'); - putDebugChar (hexchars[checksum >> 4]); - putDebugChar (hexchars[checksum % 16]); - } - while (getDebugChar () != '+'); -} - -/* Address of a routine to RTE to if we get a memory fault. */ - -static void (*volatile mem_fault_routine) () = 0; - -static void -set_mem_err (void) -{ - mem_err = 1; -} - -/* Check the address for safe access ranges. As currently defined, - this routine will reject the "expansion bus" address range(s). - To make those ranges useable, someone must implement code to detect - whether there's anything connected to the expansion bus. */ - -static int -mem_safe (unsigned char *addr) -{ -#define BAD_RANGE_ONE_START ((unsigned char *) 0x600000) -#define BAD_RANGE_ONE_END ((unsigned char *) 0xa00000) -#define BAD_RANGE_TWO_START ((unsigned char *) 0xff680000) -#define BAD_RANGE_TWO_END ((unsigned char *) 0xff800000) - - if (addr < BAD_RANGE_ONE_START) - return 1; /* safe */ - if (addr < BAD_RANGE_ONE_END) - return 0; /* unsafe */ - if (addr < BAD_RANGE_TWO_START) - return 1; /* safe */ - if (addr < BAD_RANGE_TWO_END) - return 0; /* unsafe */ -} - -/* These are separate functions so that they are so short and sweet - that the compiler won't save any registers (if there is a fault - to mem_fault, they won't get restored, so there better not be any - saved). */ -static int -get_char (unsigned char *addr) -{ -#if 1 - if (mem_fault_routine && !mem_safe (addr)) - { - mem_fault_routine (); - return 0; - } -#endif - return *addr; -} - -static void -set_char (unsigned char *addr, unsigned char val) -{ -#if 1 - if (mem_fault_routine && !mem_safe (addr)) - { - mem_fault_routine (); - return; - } -#endif - *addr = val; -} - -/* Convert the memory pointed to by mem into hex, placing result in buf. - Return a pointer to the last char put in buf (null). - If MAY_FAULT is non-zero, then we should set mem_err in response to - a fault; if zero treat a fault like any other fault in the stub. */ - -static unsigned char * -mem2hex (unsigned char *mem, unsigned char *buf, int count, int may_fault) -{ - int i; - unsigned char ch; - - if (may_fault) - mem_fault_routine = set_mem_err; - for (i = 0; i < count; i++) - { - ch = get_char (mem++); - if (may_fault && mem_err) - return (buf); - *buf++ = hexchars[ch >> 4]; - *buf++ = hexchars[ch % 16]; - } - *buf = 0; - if (may_fault) - mem_fault_routine = 0; - return (buf); -} - -/* Convert the hex array pointed to by buf into binary to be placed in mem. - Return a pointer to the character AFTER the last byte written. */ - -static unsigned char * -hex2mem (unsigned char *buf, unsigned char *mem, int count, int may_fault) -{ - int i; - unsigned char ch; - - if (may_fault) - mem_fault_routine = set_mem_err; - for (i = 0; i < count; i++) - { - ch = hex (*buf++) << 4; - ch = ch + hex (*buf++); - set_char (mem++, ch); - if (may_fault && mem_err) - return (mem); - } - if (may_fault) - mem_fault_routine = 0; - return (mem); -} - -/* Convert the binary stream in BUF to memory. - - Gdb will escape $, #, and the escape char (0x7d). - COUNT is the total number of bytes to write into - memory. */ -static unsigned char * -bin2mem (unsigned char *buf, unsigned char *mem, int count, int may_fault) -{ - int i; - unsigned char ch; - - if (may_fault) - mem_fault_routine = set_mem_err; - for (i = 0; i < count; i++) - { - /* Check for any escaped characters. Be paranoid and - only unescape chars that should be escaped. */ - if (*buf == 0x7d) - { - switch (*(buf + 1)) - { - case 0x3: /* # */ - case 0x4: /* $ */ - case 0x5d: /* escape char */ - buf++; - *buf |= 0x20; - break; - default: - /* nothing */ - break; - } - } - - set_char (mem++, *buf++); - - if (may_fault && mem_err) - return mem; - } - - if (may_fault) - mem_fault_routine = 0; - return mem; -} - -/* this function takes the m32r exception vector and attempts to - translate this number into a unix compatible signal value */ - -static int -computeSignal (int exceptionVector) -{ - int sigval; - switch (exceptionVector) - { - case 0: - sigval = 23; - break; /* I/O trap */ - case 1: - sigval = 5; - break; /* breakpoint */ - case 2: - sigval = 5; - break; /* breakpoint */ - case 3: - sigval = 5; - break; /* breakpoint */ - case 4: - sigval = 5; - break; /* breakpoint */ - case 5: - sigval = 5; - break; /* breakpoint */ - case 6: - sigval = 5; - break; /* breakpoint */ - case 7: - sigval = 5; - break; /* breakpoint */ - case 8: - sigval = 5; - break; /* breakpoint */ - case 9: - sigval = 5; - break; /* breakpoint */ - case 10: - sigval = 5; - break; /* breakpoint */ - case 11: - sigval = 5; - break; /* breakpoint */ - case 12: - sigval = 5; - break; /* breakpoint */ - case 13: - sigval = 5; - break; /* breakpoint */ - case 14: - sigval = 5; - break; /* breakpoint */ - case 15: - sigval = 5; - break; /* breakpoint */ - case 16: - sigval = 10; - break; /* BUS ERROR (alignment) */ - case 17: - sigval = 2; - break; /* INTerrupt */ - default: - sigval = 7; - break; /* "software generated" */ - } - return (sigval); -} - -/**********************************************/ -/* WHILE WE FIND NICE HEX CHARS, BUILD AN INT */ -/* RETURN NUMBER OF CHARS PROCESSED */ -/**********************************************/ -static int -hexToInt (unsigned char **ptr, int *intValue) -{ - int numChars = 0; - int hexValue; - - *intValue = 0; - while (**ptr) - { - hexValue = hex (**ptr); - if (hexValue >= 0) - { - *intValue = (*intValue << 4) | hexValue; - numChars++; - } - else - break; - (*ptr)++; - } - return (numChars); -} - -/* - Table of branch instructions: - - 10B6 RTE return from trap or exception - 1FCr JMP jump - 1ECr JL jump and link - 7Fxx BRA branch - FFxxxxxx BRA branch (long) - B09rxxxx BNEZ branch not-equal-zero - Br1rxxxx BNE branch not-equal - 7Dxx BNC branch not-condition - FDxxxxxx BNC branch not-condition (long) - B0Arxxxx BLTZ branch less-than-zero - B0Crxxxx BLEZ branch less-equal-zero - 7Exx BL branch and link - FExxxxxx BL branch and link (long) - B0Drxxxx BGTZ branch greater-than-zero - B0Brxxxx BGEZ branch greater-equal-zero - B08rxxxx BEQZ branch equal-zero - Br0rxxxx BEQ branch equal - 7Cxx BC branch condition - FCxxxxxx BC branch condition (long) - */ - -static int -isShortBranch (unsigned char *instr) -{ - unsigned char instr0 = instr[0] & 0x7F; /* mask off high bit */ - - if (instr0 == 0x10 && instr[1] == 0xB6) /* RTE */ - return 1; /* return from trap or exception */ - - if (instr0 == 0x1E || instr0 == 0x1F) /* JL or JMP */ - if ((instr[1] & 0xF0) == 0xC0) - return 2; /* jump thru a register */ - - if (instr0 == 0x7C || instr0 == 0x7D || /* BC, BNC, BL, BRA */ - instr0 == 0x7E || instr0 == 0x7F) - return 3; /* eight bit PC offset */ - - return 0; -} - -static int -isLongBranch (unsigned char *instr) -{ - if (instr[0] == 0xFC || instr[0] == 0xFD || /* BRA, BNC, BL, BC */ - instr[0] == 0xFE || instr[0] == 0xFF) /* 24 bit relative */ - return 4; - if ((instr[0] & 0xF0) == 0xB0) /* 16 bit relative */ - { - if ((instr[1] & 0xF0) == 0x00 || /* BNE, BEQ */ - (instr[1] & 0xF0) == 0x10) - return 5; - if (instr[0] == 0xB0) /* BNEZ, BLTZ, BLEZ, BGTZ, BGEZ, BEQZ */ - if ((instr[1] & 0xF0) == 0x80 || (instr[1] & 0xF0) == 0x90 || - (instr[1] & 0xF0) == 0xA0 || (instr[1] & 0xF0) == 0xB0 || - (instr[1] & 0xF0) == 0xC0 || (instr[1] & 0xF0) == 0xD0) - return 6; - } - return 0; -} - -/* if address is NOT on a 4-byte boundary, or high-bit of instr is zero, - then it's a 2-byte instruction, else it's a 4-byte instruction. */ - -#define INSTRUCTION_SIZE(addr) \ - ((((int) addr & 2) || (((unsigned char *) addr)[0] & 0x80) == 0) ? 2 : 4) - -static int -isBranch (unsigned char *instr) -{ - if (INSTRUCTION_SIZE (instr) == 2) - return isShortBranch (instr); - else - return isLongBranch (instr); -} - -static int -willBranch (unsigned char *instr, int branchCode) -{ - switch (branchCode) - { - case 0: - return 0; /* not a branch */ - case 1: - return 1; /* RTE */ - case 2: - return 1; /* JL or JMP */ - case 3: /* BC, BNC, BL, BRA (short) */ - case 4: /* BC, BNC, BL, BRA (long) */ - switch (instr[0] & 0x0F) - { - case 0xC: /* Branch if Condition Register */ - return (registers[CBR] != 0); - case 0xD: /* Branch if NOT Condition Register */ - return (registers[CBR] == 0); - case 0xE: /* Branch and Link */ - case 0xF: /* Branch (unconditional) */ - return 1; - default: /* oops? */ - return 0; - } - case 5: /* BNE, BEQ */ - switch (instr[1] & 0xF0) - { - case 0x00: /* Branch if r1 equal to r2 */ - return (registers[instr[0] & 0x0F] == registers[instr[1] & 0x0F]); - case 0x10: /* Branch if r1 NOT equal to r2 */ - return (registers[instr[0] & 0x0F] != registers[instr[1] & 0x0F]); - default: /* oops? */ - return 0; - } - case 6: /* BNEZ, BLTZ, BLEZ, BGTZ, BGEZ ,BEQZ */ - switch (instr[1] & 0xF0) - { - case 0x80: /* Branch if reg equal to zero */ - return (registers[instr[1] & 0x0F] == 0); - case 0x90: /* Branch if reg NOT equal to zero */ - return (registers[instr[1] & 0x0F] != 0); - case 0xA0: /* Branch if reg less than zero */ - return (registers[instr[1] & 0x0F] < 0); - case 0xB0: /* Branch if reg greater or equal to zero */ - return (registers[instr[1] & 0x0F] >= 0); - case 0xC0: /* Branch if reg less than or equal to zero */ - return (registers[instr[1] & 0x0F] <= 0); - case 0xD0: /* Branch if reg greater than zero */ - return (registers[instr[1] & 0x0F] > 0); - default: /* oops? */ - return 0; - } - default: /* oops? */ - return 0; - } -} - -static int -branchDestination (unsigned char *instr, int branchCode) -{ - switch (branchCode) - { - default: - case 0: /* not a branch */ - return 0; - case 1: /* RTE */ - return registers[BPC] & ~3; /* pop BPC into PC */ - case 2: /* JL or JMP */ - return registers[instr[1] & 0x0F] & ~3; /* jump thru a register */ - case 3: /* BC, BNC, BL, BRA (short, 8-bit relative offset) */ - return (((int) instr) & ~3) + ((char) instr[1] << 2); - case 4: /* BC, BNC, BL, BRA (long, 24-bit relative offset) */ - return ((int) instr + - ((((char) instr[1] << 16) | (instr[2] << 8) | (instr[3])) << - 2)); - case 5: /* BNE, BEQ (16-bit relative offset) */ - case 6: /* BNEZ, BLTZ, BLEZ, BGTZ, BGEZ ,BEQZ (ditto) */ - return ((int) instr + ((((char) instr[2] << 8) | (instr[3])) << 2)); - } - - /* An explanatory note: in the last three return expressions, I have - cast the most-significant byte of the return offset to char. - What this accomplishes is sign extension. If the other - less-significant bytes were signed as well, they would get sign - extended too and, if negative, their leading bits would clobber - the bits of the more-significant bytes ahead of them. There are - other ways I could have done this, but sign extension from - odd-sized integers is always a pain. */ -} - -static void -branchSideEffects (unsigned char *instr, int branchCode) -{ - switch (branchCode) - { - case 1: /* RTE */ - return; /* I <THINK> this is already handled... */ - case 2: /* JL (or JMP) */ - case 3: /* BL (or BC, BNC, BRA) */ - case 4: - if ((instr[0] & 0x0F) == 0x0E) /* branch/jump and link */ - registers[R14] = (registers[PC] & ~3) + 4; - return; - default: /* any other branch has no side effects */ - return; - } -} - -static struct STEPPING_CONTEXT -{ - int stepping; /* true when we've started a single-step */ - unsigned long target_addr; /* the instr we're trying to execute */ - unsigned long target_size; /* the size of the target instr */ - unsigned long noop_addr; /* where we've inserted a no-op, if any */ - unsigned long trap1_addr; /* the trap following the target instr */ - unsigned long trap2_addr; /* the trap at a branch destination, if any */ - unsigned short noop_save; /* instruction overwritten by our no-op */ - unsigned short trap1_save; /* instruction overwritten by trap1 */ - unsigned short trap2_save; /* instruction overwritten by trap2 */ - unsigned short continue_p; /* true if NOT returning to gdb after step */ -} stepping; - -/* Function: prepare_to_step - Called from handle_exception to prepare the user program to single-step. - Places a trap instruction after the target instruction, with special - extra handling for branch instructions and for instructions in the - second half-word of a word. - - Returns: True if we should actually execute the instruction; - False if we are going to emulate executing the instruction, - in which case we simply report to GDB that the instruction - has already been executed. */ - -#define TRAP1 0x10f1; /* trap #1 instruction */ -#define NOOP 0x7000; /* noop instruction */ - -static unsigned short trap1 = TRAP1; -static unsigned short noop = NOOP; - -static int -prepare_to_step (continue_p) - int continue_p; /* if this isn't REALLY a single-step (see below) */ -{ - unsigned long pc = registers[PC]; - int branchCode = isBranch ((unsigned char *) pc); - unsigned char *p; - - /* zero out the stepping context - (paranoia -- it should already be zeroed) */ - for (p = (unsigned char *) &stepping; - p < ((unsigned char *) &stepping) + sizeof (stepping); p++) - *p = 0; - - if (branchCode != 0) /* next instruction is a branch */ - { - branchSideEffects ((unsigned char *) pc, branchCode); - if (willBranch ((unsigned char *) pc, branchCode)) - registers[PC] = branchDestination ((unsigned char *) pc, branchCode); - else - registers[PC] = pc + INSTRUCTION_SIZE (pc); - return 0; /* branch "executed" -- just notify GDB */ - } - else if (((int) pc & 2) != 0) /* "second-slot" instruction */ - { - /* insert no-op before pc */ - stepping.noop_addr = pc - 2; - stepping.noop_save = *(unsigned short *) stepping.noop_addr; - *(unsigned short *) stepping.noop_addr = noop; - /* insert trap after pc */ - stepping.trap1_addr = pc + 2; - stepping.trap1_save = *(unsigned short *) stepping.trap1_addr; - *(unsigned short *) stepping.trap1_addr = trap1; - } - else /* "first-slot" instruction */ - { - /* insert trap after pc */ - stepping.trap1_addr = pc + INSTRUCTION_SIZE (pc); - stepping.trap1_save = *(unsigned short *) stepping.trap1_addr; - *(unsigned short *) stepping.trap1_addr = trap1; - } - /* "continue_p" means that we are actually doing a continue, and not - being requested to single-step by GDB. Sometimes we have to do - one single-step before continuing, because the PC is on a half-word - boundary. There's no way to simply resume at such an address. */ - stepping.continue_p = continue_p; - stepping.stepping = 1; /* starting a single-step */ - return 1; -} - -/* Function: finish_from_step - Called from handle_exception to finish up when the user program - returns from a single-step. Replaces the instructions that had - been overwritten by traps or no-ops, - - Returns: True if we should notify GDB that the target stopped. - False if we only single-stepped because we had to before we - could continue (ie. we were trying to continue at a - half-word boundary). In that case don't notify GDB: - just "continue continuing". */ - -static int -finish_from_step (void) -{ - if (stepping.stepping) /* anything to do? */ - { - int continue_p = stepping.continue_p; - unsigned char *p; - - if (stepping.noop_addr) /* replace instr "under" our no-op */ - *(unsigned short *) stepping.noop_addr = stepping.noop_save; - if (stepping.trap1_addr) /* replace instr "under" our trap */ - *(unsigned short *) stepping.trap1_addr = stepping.trap1_save; - if (stepping.trap2_addr) /* ditto our other trap, if any */ - *(unsigned short *) stepping.trap2_addr = stepping.trap2_save; - - for (p = (unsigned char *) &stepping; /* zero out the stepping context */ - p < ((unsigned char *) &stepping) + sizeof (stepping); p++) - *p = 0; - - return !(continue_p); - } - else /* we didn't single-step, therefore this must be a legitimate stop */ - return 1; -} - -struct PSWreg -{ /* separate out the bit flags in the PSW register */ - int pad1:16; - int bsm:1; - int bie:1; - int pad2:5; - int bc:1; - int sm:1; - int ie:1; - int pad3:5; - int c:1; -} *psw; - -/* Upon entry the value for LR to save has been pushed. - We unpush that so that the value for the stack pointer saved is correct. - Upon entry, all other registers are assumed to have not been modified - since the interrupt/trap occured. */ - -asm ("\n\ -stash_registers:\n\ - push r0\n\ - push r1\n\ - seth r1, #shigh(registers)\n\ - add3 r1, r1, #low(registers)\n\ - pop r0 ; r1\n\ - st r0, @(4,r1)\n\ - pop r0 ; r0\n\ - st r0, @r1\n\ - addi r1, #4 ; only add 4 as subsequent saves are `pre inc'\n\ - st r2, @+r1\n\ - st r3, @+r1\n\ - st r4, @+r1\n\ - st r5, @+r1\n\ - st r6, @+r1\n\ - st r7, @+r1\n\ - st r8, @+r1\n\ - st r9, @+r1\n\ - st r10, @+r1\n\ - st r11, @+r1\n\ - st r12, @+r1\n\ - st r13, @+r1 ; fp\n\ - pop r0 ; lr (r14)\n\ - st r0, @+r1\n\ - st sp, @+r1 ; sp contains right value at this point\n\ - mvfc r0, cr0\n\ - st r0, @+r1 ; cr0 == PSW\n\ - mvfc r0, cr1\n\ - st r0, @+r1 ; cr1 == CBR\n\ - mvfc r0, cr2\n\ - st r0, @+r1 ; cr2 == SPI\n\ - mvfc r0, cr3\n\ - st r0, @+r1 ; cr3 == SPU\n\ - mvfc r0, cr6\n\ - st r0, @+r1 ; cr6 == BPC\n\ - st r0, @+r1 ; PC == BPC\n\ - mvfaclo r0\n\ - st r0, @+r1 ; ACCL\n\ - mvfachi r0\n\ - st r0, @+r1 ; ACCH\n\ - jmp lr"); - -/* C routine to clean up what stash_registers did. - It is called after calling stash_registers. - This is separate from stash_registers as we want to do this in C - but doing stash_registers in C isn't straightforward. */ - -static void -cleanup_stash (void) -{ - psw = (struct PSWreg *) ®isters[PSW]; /* fields of PSW register */ - psw->sm = psw->bsm; /* fix up pre-trap values of psw fields */ - psw->ie = psw->bie; - psw->c = psw->bc; - registers[CBR] = psw->bc; /* fix up pre-trap "C" register */ - -#if 0 /* FIXME: Was in previous version. Necessary? - (Remember that we use the "rte" insn to return from the - trap/interrupt so the values of bsm, bie, bc are important. */ - psw->bsm = psw->bie = psw->bc = 0; /* zero post-trap values */ -#endif - - /* FIXME: Copied from previous version. This can probably be deleted - since methinks stash_registers has already done this. */ - registers[PC] = registers[BPC]; /* pre-trap PC */ - - /* FIXME: Copied from previous version. Necessary? */ - if (psw->sm) /* copy R15 into (psw->sm ? SPU : SPI) */ - registers[SPU] = registers[R15]; - else - registers[SPI] = registers[R15]; -} - -asm ("\n\ -restore_and_return:\n\ - seth r0, #shigh(registers+8)\n\ - add3 r0, r0, #low(registers+8)\n\ - ld r2, @r0+ ; restore r2\n\ - ld r3, @r0+ ; restore r3\n\ - ld r4, @r0+ ; restore r4\n\ - ld r5, @r0+ ; restore r5\n\ - ld r6, @r0+ ; restore r6\n\ - ld r7, @r0+ ; restore r7\n\ - ld r8, @r0+ ; restore r8\n\ - ld r9, @r0+ ; restore r9\n\ - ld r10, @r0+ ; restore r10\n\ - ld r11, @r0+ ; restore r11\n\ - ld r12, @r0+ ; restore r12\n\ - ld r13, @r0+ ; restore r13\n\ - ld r14, @r0+ ; restore r14\n\ - ld r15, @r0+ ; restore r15\n\ - ld r1, @r0+ ; restore cr0 == PSW\n\ - mvtc r1, cr0\n\ - ld r1, @r0+ ; restore cr1 == CBR (no-op, because it's read only)\n\ - mvtc r1, cr1\n\ - ld r1, @r0+ ; restore cr2 == SPI\n\ - mvtc r1, cr2\n\ - ld r1, @r0+ ; restore cr3 == SPU\n\ - mvtc r1, cr3\n\ - addi r0, #4 ; skip BPC\n\ - ld r1, @r0+ ; restore cr6 (BPC) == PC\n\ - mvtc r1, cr6\n\ - ld r1, @r0+ ; restore ACCL\n\ - mvtaclo r1\n\ - ld r1, @r0+ ; restore ACCH\n\ - mvtachi r1\n\ - seth r0, #shigh(registers)\n\ - add3 r0, r0, #low(registers)\n\ - ld r1, @(4,r0) ; restore r1\n\ - ld r0, @r0 ; restore r0\n\ - rte"); - -/* General trap handler, called after the registers have been stashed. - NUM is the trap/exception number. */ - -static void -process_exception (int num) -{ - cleanup_stash (); - asm volatile ("\n\ - seth r1, #shigh(stackPtr)\n\ - add3 r1, r1, #low(stackPtr)\n\ - ld r15, @r1 ; setup local stack (protect user stack)\n\ - mv r0, %0\n\ - bl handle_exception\n\ - bl restore_and_return"::"r" (num):"r0", "r1"); -} - -void _catchException0 (); - -asm ("\n\ -_catchException0:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #0\n\ - bl process_exception"); - -void _catchException1 (); - -asm ("\n\ -_catchException1:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - bl cleanup_stash\n\ - seth r1, #shigh(stackPtr)\n\ - add3 r1, r1, #low(stackPtr)\n\ - ld r15, @r1 ; setup local stack (protect user stack)\n\ - seth r1, #shigh(registers + 21*4) ; PC\n\ - add3 r1, r1, #low(registers + 21*4)\n\ - ld r0, @r1\n\ - addi r0, #-4 ; back up PC for breakpoint trap.\n\ - st r0, @r1 ; FIXME: what about bp in right slot?\n\ - ldi r0, #1\n\ - bl handle_exception\n\ - bl restore_and_return"); - -void _catchException2 (); - -asm ("\n\ -_catchException2:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #2\n\ - bl process_exception"); - -void _catchException3 (); - -asm ("\n\ -_catchException3:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #3\n\ - bl process_exception"); - -void _catchException4 (); - -asm ("\n\ -_catchException4:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #4\n\ - bl process_exception"); - -void _catchException5 (); - -asm ("\n\ -_catchException5:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #5\n\ - bl process_exception"); - -void _catchException6 (); - -asm ("\n\ -_catchException6:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #6\n\ - bl process_exception"); - -void _catchException7 (); - -asm ("\n\ -_catchException7:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #7\n\ - bl process_exception"); - -void _catchException8 (); - -asm ("\n\ -_catchException8:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #8\n\ - bl process_exception"); - -void _catchException9 (); - -asm ("\n\ -_catchException9:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #9\n\ - bl process_exception"); - -void _catchException10 (); - -asm ("\n\ -_catchException10:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #10\n\ - bl process_exception"); - -void _catchException11 (); - -asm ("\n\ -_catchException11:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #11\n\ - bl process_exception"); - -void _catchException12 (); - -asm ("\n\ -_catchException12:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #12\n\ - bl process_exception"); - -void _catchException13 (); - -asm ("\n\ -_catchException13:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #13\n\ - bl process_exception"); - -void _catchException14 (); - -asm ("\n\ -_catchException14:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #14\n\ - bl process_exception"); - -void _catchException15 (); - -asm ("\n\ -_catchException15:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #15\n\ - bl process_exception"); - -void _catchException16 (); - -asm ("\n\ -_catchException16:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #16\n\ - bl process_exception"); - -void _catchException17 (); - -asm ("\n\ -_catchException17:\n\ - push lr\n\ - bl stash_registers\n\ - ; Note that at this point the pushed value of `lr' has been popped\n\ - ldi r0, #17\n\ - bl process_exception"); - - -/* this function is used to set up exception handlers for tracing and - breakpoints */ -void -set_debug_traps (void) -{ - /* extern void remcomHandler(); */ - int i; - - for (i = 0; i < 18; i++) /* keep a copy of old vectors */ - if (save_vectors[i] == 0) /* only copy them the first time */ - save_vectors[i] = getExceptionHandler (i); - - stackPtr = &remcomStack[STACKSIZE / sizeof (int) - 1]; - - exceptionHandler (0, _catchException0); - exceptionHandler (1, _catchException1); - exceptionHandler (2, _catchException2); - exceptionHandler (3, _catchException3); - exceptionHandler (4, _catchException4); - exceptionHandler (5, _catchException5); - exceptionHandler (6, _catchException6); - exceptionHandler (7, _catchException7); - exceptionHandler (8, _catchException8); - exceptionHandler (9, _catchException9); - exceptionHandler (10, _catchException10); - exceptionHandler (11, _catchException11); - exceptionHandler (12, _catchException12); - exceptionHandler (13, _catchException13); - exceptionHandler (14, _catchException14); - exceptionHandler (15, _catchException15); - exceptionHandler (16, _catchException16); - /* exceptionHandler (17, _catchException17); */ - - initialized = 1; -} - -/* This function will generate a breakpoint exception. It is used at the - beginning of a program to sync up with a debugger and can be used - otherwise as a quick means to stop program execution and "break" into - the debugger. */ - -#define BREAKPOINT() asm volatile (" trap #2"); - -void -breakpoint (void) -{ - if (initialized) - BREAKPOINT (); -} - -/* STDOUT section: - Stuff pertaining to simulating stdout by sending chars to gdb to be echoed. - Functions: gdb_putchar(char ch) - gdb_puts(char *str) - gdb_write(char *str, int len) - gdb_error(char *format, char *parm) - */ - -/* Function: gdb_putchar(int) - Make gdb write a char to stdout. - Returns: the char */ - -static int -gdb_putchar (int ch) -{ - char buf[4]; - - buf[0] = 'O'; - buf[1] = hexchars[ch >> 4]; - buf[2] = hexchars[ch & 0x0F]; - buf[3] = 0; - putpacket (buf); - return ch; -} - -/* Function: gdb_write(char *, int) - Make gdb write n bytes to stdout (not assumed to be null-terminated). - Returns: number of bytes written */ - -static int -gdb_write (char *data, int len) -{ - char *buf, *cpy; - int i; - - buf = remcomOutBuffer; - buf[0] = 'O'; - i = 0; - while (i < len) - { - for (cpy = buf + 1; - i < len && cpy < buf + sizeof (remcomOutBuffer) - 3; i++) - { - *cpy++ = hexchars[data[i] >> 4]; - *cpy++ = hexchars[data[i] & 0x0F]; - } - *cpy = 0; - putpacket (buf); - } - return len; -} - -/* Function: gdb_puts(char *) - Make gdb write a null-terminated string to stdout. - Returns: the length of the string */ - -static int -gdb_puts (char *str) -{ - return gdb_write (str, strlen (str)); -} - -/* Function: gdb_error(char *, char *) - Send an error message to gdb's stdout. - First string may have 1 (one) optional "%s" in it, which - will cause the optional second string to be inserted. */ - -static void -gdb_error (char *format, char *parm) -{ - char buf[400], *cpy; - int len; - - if (remote_debug) - { - if (format && *format) - len = strlen (format); - else - return; /* empty input */ - - if (parm && *parm) - len += strlen (parm); - - for (cpy = buf; *format;) - { - if (format[0] == '%' && format[1] == 's') /* include second string */ - { - format += 2; /* advance two chars instead of just one */ - while (parm && *parm) - *cpy++ = *parm++; - } - else - *cpy++ = *format++; - } - *cpy = '\0'; - gdb_puts (buf); - } -} - -static unsigned char * -strcpy (unsigned char *dest, const unsigned char *src) -{ - unsigned char *ret = dest; - - if (dest && src) - { - while (*src) - *dest++ = *src++; - *dest = 0; - } - return ret; -} - -static int -strlen (const unsigned char *src) -{ - int ret; - - for (ret = 0; *src; src++) - ret++; - - return ret; -} - -#if 0 -void -exit (code) - int code; -{ - _exit (code); -} - -int -atexit (void *p) -{ - return 0; -} - -void -abort (void) -{ - _exit (1); -} -#endif diff --git a/libgloss/m32r/mon.specs b/libgloss/m32r/mon.specs deleted file mode 100644 index 5db789a..0000000 --- a/libgloss/m32r/mon.specs +++ /dev/null @@ -1,3 +0,0 @@ -*endfile_cpu: --lmon %{m32rx:m32rx/crtfini.o%s} %{!m32rx:crtfini.o%s} - diff --git a/libgloss/m32r/open.c b/libgloss/m32r/open.c deleted file mode 100644 index 6671c29..0000000 --- a/libgloss/m32r/open.c +++ /dev/null @@ -1,10 +0,0 @@ -#include <sys/types.h> -#include <sys/stat.h> -#include "syscall.h" -#include "eit.h" - -int -_open (const char *path, int flags) -{ - return TRAP0 (SYS_open, path, flags, 0); -} diff --git a/libgloss/m32r/raise.c b/libgloss/m32r/raise.c deleted file mode 100644 index b2dc2f6..0000000 --- a/libgloss/m32r/raise.c +++ /dev/null @@ -1,5 +0,0 @@ -/* ??? Needed? */ - -_raise () -{ -} diff --git a/libgloss/m32r/read.c b/libgloss/m32r/read.c deleted file mode 100644 index 0e32b74..0000000 --- a/libgloss/m32r/read.c +++ /dev/null @@ -1,10 +0,0 @@ -#include <sys/types.h> -#include <sys/stat.h> -#include "syscall.h" -#include "eit.h" - -int -_read (int file, char *ptr, int len) -{ - return TRAP0 (SYS_read, file, ptr, len); -} diff --git a/libgloss/m32r/sbrk.c b/libgloss/m32r/sbrk.c deleted file mode 100644 index bc82091..0000000 --- a/libgloss/m32r/sbrk.c +++ /dev/null @@ -1,34 +0,0 @@ -#include <sys/types.h> -#include <sys/stat.h> -#include "syscall.h" -#include "eit.h" - -caddr_t -_sbrk (int incr) -{ - /* `_end' is defined in the linker script. - We must handle it carefully as we don't want the compiler to think - it lives in the small data area. Use medium model to ensure 32 bit - addressability. */ - extern char _end __attribute__ ((__model__(__medium__))); - static char *heap_end; - char *prev_heap_end; - char *sp = (char *)&sp; - - if (heap_end == 0) - { - heap_end = &_end; - } - prev_heap_end = heap_end; - if (heap_end > sp) - { - _write (1, "Heap and stack collision\n", 25); -#if 0 /* Calling abort brings in the signal handling code. */ - abort (); -#else - exit (1); -#endif - } - heap_end += incr; - return (caddr_t) prev_heap_end; -} diff --git a/libgloss/m32r/stat.c b/libgloss/m32r/stat.c deleted file mode 100644 index eb4c8e3..0000000 --- a/libgloss/m32r/stat.c +++ /dev/null @@ -1,11 +0,0 @@ -#include <sys/types.h> -#include <sys/stat.h> -#include "syscall.h" -#include "eit.h" - -int -_stat (const char *path, struct stat *st) - -{ - return TRAP0 (SYS_stat, path, st, 0); -} diff --git a/libgloss/m32r/trap0.S b/libgloss/m32r/trap0.S deleted file mode 100644 index 04efa13..0000000 --- a/libgloss/m32r/trap0.S +++ /dev/null @@ -1,16 +0,0 @@ -; Trap 0 handler (syscall interface). -; -; The trap handler returns the result in r0 and the error code (errno value) -; in r2. r1 is reserved in case an 8 byte quantity ever needs to be -; returned in registers. - - .text - .global __trap0 -__trap0: - trap #0 ; trap 0 returns result in r0, error code in r2 - cmpui r2,#1 ; is error code zero? - bc .Lret ; yes, skip setting errno - ld r4,@(sp) ; no, set errno - st r2,@r4 -.Lret: - jmp lr ; return to caller diff --git a/libgloss/m32r/trapmon0.c b/libgloss/m32r/trapmon0.c deleted file mode 100644 index 20a2fcb..0000000 --- a/libgloss/m32r/trapmon0.c +++ /dev/null @@ -1,53 +0,0 @@ -/* - * Mon2000 Trap handler (syscall interface). - * - * This trap handler is linked into the mon2000 libgloss (libmon). - */ -#include <reent.h> -#include "syscall.h" - -int __trap0 (int function, int p1, int p2, int p3, struct _reent *r) -{ - int rc = 0; - - switch (function) { - case SYS_exit: - /* loop so GDB can't go past system exit call */ - while (1) { - asm volatile ( - "ldi r0, #0 \n" - "trap #15 ; return control to Mon2000"); - } - break; - - case SYS_write: - { - int i; - - for( i=0; i<p3; i++ ) { - asm volatile ( - "ldi r0, #2 \n" - "ldi r1, #15 ; load Ctrl-O (ASCII 15) \n" - "trap #15 ; write Ctrl-O for quoting purposes" ); - - asm volatile ( - "ldi r0, #2 \n" - "ldb r1, %0 \n" - "trap #15 ; write character to console" - : /* no outputs */ - : "m" (((char*)p2)[i])); - } - - rc = p3; /* return number of chars written */ - break; - } - - default: - rc = 0; - break; - } - - return rc; -} - - diff --git a/libgloss/m32r/unlink.c b/libgloss/m32r/unlink.c deleted file mode 100644 index 14f741e..0000000 --- a/libgloss/m32r/unlink.c +++ /dev/null @@ -1,10 +0,0 @@ -#include <sys/types.h> -#include <sys/stat.h> -#include "syscall.h" -#include "eit.h" - -int -_unlink () -{ - return -1; -} diff --git a/libgloss/m32r/utime.c b/libgloss/m32r/utime.c deleted file mode 100644 index ea8da2f..0000000 --- a/libgloss/m32r/utime.c +++ /dev/null @@ -1,12 +0,0 @@ -#include <sys/types.h> -#include <sys/stat.h> -#include "syscall.h" -#include "eit.h" - -int -_utime (path, times) - const char *path; - char *times; -{ - return TRAP0 (SYS_utime, path, times, 0); -} diff --git a/libgloss/m32r/write.c b/libgloss/m32r/write.c deleted file mode 100644 index 55be40c..0000000 --- a/libgloss/m32r/write.c +++ /dev/null @@ -1,10 +0,0 @@ -#include <sys/types.h> -#include <sys/stat.h> -#include "syscall.h" -#include "eit.h" - -int -_write (int file, char *ptr, int len) -{ - return TRAP0 (SYS_write, file, ptr, len); -} |