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/* |
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* Copyright (C) 2003-2005 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: emul.c,v 1.184 2005/04/20 04:43:52 debug Exp $ |
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* |
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* Emulation startup and misc. routines. |
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*/ |
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|
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#include <signal.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <limits.h> |
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#include <stdarg.h> |
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#include <string.h> |
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#include <unistd.h> |
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|
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#include "arcbios.h" |
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#include "bintrans.h" |
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#include "cpu.h" |
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#include "emul.h" |
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#include "console.h" |
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#include "debugger.h" |
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#include "device.h" |
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#include "diskimage.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "mips_cpu_types.h" |
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#include "misc.h" |
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#include "net.h" |
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#include "sgi_arcbios.h" |
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#include "x11.h" |
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|
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|
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extern int force_debugger_at_exit; |
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|
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extern int extra_argc; |
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extern char **extra_argv; |
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|
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extern int verbose; |
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extern int quiet_mode; |
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|
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extern struct emul *debugger_emul; |
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extern struct diskimage *diskimages[]; |
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|
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|
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/* |
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* add_dump_points(): |
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* |
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* Take the strings breakpoint_string[] and convert to addresses |
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* (and store them in breakpoint_addr[]). |
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* |
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* TODO: This function should be moved elsewhere. |
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*/ |
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static void add_dump_points(struct machine *m) |
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{ |
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int i; |
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int string_flag; |
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uint64_t dp; |
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|
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for (i=0; i<m->n_breakpoints; i++) { |
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string_flag = 0; |
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dp = strtoull(m->breakpoint_string[i], NULL, 0); |
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|
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/* |
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* If conversion resulted in 0, then perhaps it is a |
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* symbol: |
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*/ |
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if (dp == 0) { |
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uint64_t addr; |
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int res = get_symbol_addr(&m->symbol_context, |
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m->breakpoint_string[i], &addr); |
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if (!res) |
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fprintf(stderr, |
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"WARNING! Breakpoint '%s' could not be" |
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" parsed\n", |
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m->breakpoint_string[i]); |
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else { |
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dp = addr; |
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string_flag = 1; |
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} |
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} |
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|
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/* |
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* TODO: It would be nice if things like symbolname+0x1234 |
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* were automatically converted into the correct address. |
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*/ |
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|
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if ((dp >> 32) == 0 && ((dp >> 31) & 1)) |
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dp |= 0xffffffff00000000ULL; |
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m->breakpoint_addr[i] = dp; |
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|
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debug("breakpoint %i: 0x%016llx", i, (long long)dp); |
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if (string_flag) |
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debug(" (%s)", m->breakpoint_string[i]); |
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debug("\n"); |
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} |
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} |
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|
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|
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/* |
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* fix_console(): |
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*/ |
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static void fix_console(void) |
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{ |
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console_deinit(); |
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} |
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|
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|
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/* |
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* load_bootblock(): |
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* |
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* For some emulation modes, it is possible to boot from a harddisk image by |
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* loading a bootblock from a specific disk offset into memory, and executing |
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* that, instead of requiring a separate kernel file. It is then up to the |
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* bootblock to load a kernel. |
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*/ |
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static void load_bootblock(struct machine *m, struct cpu *cpu) |
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{ |
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int boot_disk_id; |
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unsigned char minibuf[0x20]; |
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unsigned char *bootblock_buf; |
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uint64_t bootblock_offset; |
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uint64_t bootblock_loadaddr, bootblock_pc; |
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int n_blocks, res, readofs; |
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|
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boot_disk_id = diskimage_bootdev(m); |
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if (boot_disk_id < 0) |
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return; |
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|
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switch (m->machine_type) { |
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case MACHINE_DEC: |
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/* |
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* The first few bytes of a disk contains information about |
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* where the bootblock(s) are located. (These are all 32-bit |
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* little-endian words.) |
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* |
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* Offset 0x10 = load address |
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* 0x14 = initial PC value |
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* 0x18 = nr of 512-byte blocks to read |
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* 0x1c = offset on disk to where the bootblocks |
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* are (in 512-byte units) |
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* 0x20 = nr of blocks to read... |
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* 0x24 = offset... |
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* |
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* nr of blocks to read and offset are repeated until nr of |
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* blocks to read is zero. |
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*/ |
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res = diskimage_access(m, boot_disk_id, 0, 0, |
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minibuf, sizeof(minibuf)); |
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|
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bootblock_loadaddr = minibuf[0x10] + (minibuf[0x11] << 8) |
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+ (minibuf[0x12] << 16) + (minibuf[0x13] << 24); |
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|
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/* Convert loadaddr to uncached: */ |
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if ((bootblock_loadaddr & 0xf0000000ULL) != 0x80000000 && |
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(bootblock_loadaddr & 0xf0000000ULL) != 0xa0000000) |
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fatal("\nWARNING! Weird load address 0x%08x.\n\n", |
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(int)bootblock_loadaddr); |
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bootblock_loadaddr &= 0x0fffffffULL; |
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bootblock_loadaddr |= 0xffffffffa0000000ULL; |
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|
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bootblock_pc = minibuf[0x14] + (minibuf[0x15] << 8) |
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+ (minibuf[0x16] << 16) + (minibuf[0x17] << 24); |
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|
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bootblock_pc &= 0x0fffffffULL; |
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bootblock_pc |= 0xffffffffa0000000ULL; |
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cpu->pc = bootblock_pc; |
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|
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debug("DEC boot: loadaddr=0x%08x, pc=0x%08x", |
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(int)bootblock_loadaddr, (int)bootblock_pc); |
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|
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readofs = 0x18; |
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|
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for (;;) { |
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res = diskimage_access(m, boot_disk_id, 0, readofs, |
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minibuf, sizeof(minibuf)); |
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if (!res) { |
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printf("couldn't read disk?\n"); |
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exit(1); |
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} |
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|
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n_blocks = minibuf[0] + (minibuf[1] << 8) |
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+ (minibuf[2] << 16) + (minibuf[3] << 24); |
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|
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bootblock_offset = (minibuf[4] + (minibuf[5] << 8) |
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+ (minibuf[6] << 16) + (minibuf[7] << 24)) * 512; |
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|
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if (n_blocks < 1) |
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break; |
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|
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debug(readofs == 0x18? ": %i" : " + %i", n_blocks); |
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|
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if (n_blocks * 512 > 65536) |
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fatal("\nWARNING! Unusually large bootblock " |
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"(%i bytes)\n\n", n_blocks * 512); |
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|
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bootblock_buf = malloc(n_blocks * 512); |
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if (bootblock_buf == NULL) { |
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fprintf(stderr, "out of memory in " |
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"load_bootblock()\n"); |
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exit(1); |
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} |
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|
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res = diskimage_access(m, boot_disk_id, 0, |
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bootblock_offset, bootblock_buf, n_blocks * 512); |
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if (!res) { |
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fatal("WARNING: could not load bootblocks from" |
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" disk offset 0x%llx\n", |
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(long long)bootblock_offset); |
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} |
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|
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store_buf(cpu, bootblock_loadaddr, |
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(char *)bootblock_buf, n_blocks * 512); |
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|
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bootblock_loadaddr += 512*n_blocks; |
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free(bootblock_buf); |
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readofs += 8; |
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} |
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|
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debug(readofs == 0x18? ": no blocks?\n" : " blocks\n"); |
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break; |
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|
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case MACHINE_X86: |
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cpu->cd.x86.mode = 16; |
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cpu->pc = 0x7c00; |
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|
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bootblock_buf = malloc(512); |
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if (bootblock_buf == NULL) { |
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fprintf(stderr, "Out of memory.\n"); |
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exit(1); |
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} |
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|
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res = diskimage_access(m, boot_disk_id, 0, 0, |
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bootblock_buf, 512); |
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if (!res) { |
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printf("Couldn't read the disk image. Aborting.\n"); |
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exit(1); |
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} |
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|
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debug("loading PC bootsector from disk %i\n", boot_disk_id); |
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if (bootblock_buf[510] != 0x55 || bootblock_buf[511] != 0xaa) |
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debug("WARNING! The 0x55,0xAA marker is missing! " |
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"Booting anyway.\n"); |
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store_buf(cpu, 0x7c00, (char *)bootblock_buf, 512); |
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free(bootblock_buf); |
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break; |
271 |
|
272 |
default: |
273 |
fatal("Booting from disk without a separate kernel " |
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"doesn't work in this emulation mode.\n"); |
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exit(1); |
276 |
} |
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} |
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|
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|
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/* |
281 |
* emul_new(): |
282 |
* |
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* Returns a reasonably initialized struct emul. |
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*/ |
285 |
struct emul *emul_new(char *name) |
286 |
{ |
287 |
struct emul *e; |
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e = malloc(sizeof(struct emul)); |
289 |
if (e == NULL) { |
290 |
fprintf(stderr, "out of memory in emul_new()\n"); |
291 |
exit(1); |
292 |
} |
293 |
|
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memset(e, 0, sizeof(struct emul)); |
295 |
|
296 |
/* Sane default values: */ |
297 |
e->n_machines = 0; |
298 |
|
299 |
if (name != NULL) { |
300 |
e->name = strdup(name); |
301 |
if (e->name == NULL) { |
302 |
fprintf(stderr, "out of memory in emul_new()\n"); |
303 |
exit(1); |
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} |
305 |
} |
306 |
|
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return e; |
308 |
} |
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|
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|
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/* |
312 |
* emul_add_machine(): |
313 |
* |
314 |
* Calls machine_new(), adds the new machine into the emul struct, and |
315 |
* returns a pointer to the new machine. |
316 |
* |
317 |
* This function should be used instead of manually calling machine_new(). |
318 |
*/ |
319 |
struct machine *emul_add_machine(struct emul *e, char *name) |
320 |
{ |
321 |
struct machine *m; |
322 |
|
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m = machine_new(name, e); |
324 |
m->serial_nr = (e->next_serial_nr ++); |
325 |
|
326 |
e->n_machines ++; |
327 |
e->machines = realloc(e->machines, |
328 |
sizeof(struct machine *) * e->n_machines); |
329 |
if (e->machines == NULL) { |
330 |
fprintf(stderr, "emul_add_machine(): out of memory\n"); |
331 |
exit(1); |
332 |
} |
333 |
|
334 |
e->machines[e->n_machines - 1] = m; |
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return m; |
336 |
} |
337 |
|
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|
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/* |
340 |
* add_arc_components(): |
341 |
* |
342 |
* This function adds ARCBIOS memory descriptors for the loaded program, |
343 |
* and ARCBIOS components for SCSI devices. |
344 |
*/ |
345 |
static void add_arc_components(struct machine *m) |
346 |
{ |
347 |
struct cpu *cpu = m->cpus[m->bootstrap_cpu]; |
348 |
uint64_t start = cpu->pc & 0x1fffffff; |
349 |
uint64_t len = 0xc00000 - start; |
350 |
struct diskimage *d; |
351 |
uint64_t scsicontroller, scsidevice, scsidisk; |
352 |
|
353 |
if ((cpu->pc >> 60) != 0xf) { |
354 |
start = cpu->pc & 0xffffffffffULL; |
355 |
len = 0xc00000 - start; |
356 |
} |
357 |
|
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len += 1048576 * m->memory_offset_in_mb; |
359 |
|
360 |
/* NOTE/TODO: magic 12MB end of load program area */ |
361 |
arcbios_add_memory_descriptor(cpu, |
362 |
0x60000 + m->memory_offset_in_mb * 1048576, |
363 |
start-0x60000 - m->memory_offset_in_mb * 1048576, |
364 |
ARCBIOS_MEM_FreeMemory); |
365 |
arcbios_add_memory_descriptor(cpu, |
366 |
start, len, ARCBIOS_MEM_LoadedProgram); |
367 |
|
368 |
scsicontroller = arcbios_get_scsicontroller(); |
369 |
if (scsicontroller == 0) |
370 |
return; |
371 |
|
372 |
/* TODO: The device 'name' should defined be somewhere else. */ |
373 |
|
374 |
d = m->first_diskimage; |
375 |
while (d != NULL) { |
376 |
if (d->type == DISKIMAGE_SCSI) { |
377 |
int a, b, flags = COMPONENT_FLAG_Input; |
378 |
char component_string[100]; |
379 |
char *name = "DEC RZ58 (C) DEC2000"; |
380 |
|
381 |
/* Read-write, or read-only? */ |
382 |
if (d->writable) |
383 |
flags |= COMPONENT_FLAG_Output; |
384 |
else |
385 |
flags |= COMPONENT_FLAG_ReadOnly; |
386 |
|
387 |
a = COMPONENT_TYPE_DiskController; |
388 |
b = COMPONENT_TYPE_DiskPeripheral; |
389 |
|
390 |
if (d->is_a_cdrom) { |
391 |
flags |= COMPONENT_FLAG_Removable; |
392 |
a = COMPONENT_TYPE_CDROMController; |
393 |
b = COMPONENT_TYPE_FloppyDiskPeripheral; |
394 |
name = "NEC CD-ROM CDR-210P 1.0 "; |
395 |
} |
396 |
|
397 |
scsidevice = arcbios_addchild_manual(cpu, |
398 |
COMPONENT_CLASS_ControllerClass, |
399 |
a, flags, 1, 2, d->id, 0xffffffff, |
400 |
name, scsicontroller, NULL, 0); |
401 |
|
402 |
scsidisk = arcbios_addchild_manual(cpu, |
403 |
COMPONENT_CLASS_PeripheralClass, |
404 |
b, flags, 1, 2, 0, 0xffffffff, NULL, |
405 |
scsidevice, NULL, 0); |
406 |
|
407 |
/* |
408 |
* Add device string to component address mappings: |
409 |
* "scsi(0)disk(0)rdisk(0)partition(0)" |
410 |
*/ |
411 |
|
412 |
if (d->is_a_cdrom) { |
413 |
snprintf(component_string, |
414 |
sizeof(component_string), |
415 |
"scsi(0)cdrom(%i)", d->id); |
416 |
arcbios_add_string_to_component( |
417 |
component_string, scsidevice); |
418 |
|
419 |
snprintf(component_string, |
420 |
sizeof(component_string), |
421 |
"scsi(0)cdrom(%i)fdisk(0)", d->id); |
422 |
arcbios_add_string_to_component( |
423 |
component_string, scsidisk); |
424 |
} else { |
425 |
snprintf(component_string, |
426 |
sizeof(component_string), |
427 |
"scsi(0)disk(%i)", d->id); |
428 |
arcbios_add_string_to_component( |
429 |
component_string, scsidevice); |
430 |
|
431 |
snprintf(component_string, |
432 |
sizeof(component_string), |
433 |
"scsi(0)disk(%i)rdisk(0)", d->id); |
434 |
arcbios_add_string_to_component( |
435 |
component_string, scsidisk); |
436 |
} |
437 |
} |
438 |
|
439 |
d = d->next; |
440 |
} |
441 |
} |
442 |
|
443 |
|
444 |
/* |
445 |
* emul_machine_setup(): |
446 |
* |
447 |
* o) Initialize the hardware (RAM, devices, CPUs, ...) which |
448 |
* will be emulated in this machine. |
449 |
* |
450 |
* o) Load ROM code and/or other programs into emulated memory. |
451 |
* |
452 |
* o) Special hacks needed after programs have been loaded. |
453 |
*/ |
454 |
void emul_machine_setup(struct machine *m, int n_load, char **load_names, |
455 |
int n_devices, char **device_names) |
456 |
{ |
457 |
struct emul *emul; |
458 |
struct cpu *cpu; |
459 |
int i, iadd=4; |
460 |
uint64_t addr, memory_amount, entrypoint = 0, gp = 0, toc = 0; |
461 |
int byte_order; |
462 |
|
463 |
emul = m->emul; |
464 |
|
465 |
debug("machine \"%s\":\n", m->name); |
466 |
debug_indentation(iadd); |
467 |
|
468 |
/* For userland-only, this decides which ARCH/cpu_name to use: */ |
469 |
if (m->machine_type == MACHINE_USERLAND && m->userland_emul != NULL) { |
470 |
useremul_name_to_useremul(NULL, m->userland_emul, |
471 |
&m->arch, &m->machine_name, &m->cpu_name); |
472 |
if (m->arch == ARCH_NOARCH) { |
473 |
printf("Unsupported userland emulation mode.\n"); |
474 |
exit(1); |
475 |
} |
476 |
} |
477 |
|
478 |
if (m->machine_type == MACHINE_NONE) { |
479 |
fatal("No machine type specified?\n"); |
480 |
exit(1); |
481 |
} |
482 |
|
483 |
m->cpu_family = cpu_family_ptr_by_number(m->arch); |
484 |
|
485 |
machine_memsize_fix(m); |
486 |
|
487 |
/* |
488 |
* Create the system's memory: |
489 |
* |
490 |
* (Don't print the amount for userland-only emulation; the |
491 |
* size doesn't matter.) |
492 |
*/ |
493 |
if (m->machine_type != MACHINE_USERLAND) |
494 |
debug("memory: %i MB", m->physical_ram_in_mb); |
495 |
memory_amount = (uint64_t)m->physical_ram_in_mb * 1048576; |
496 |
if (m->memory_offset_in_mb > 0) { |
497 |
/* |
498 |
* A special hack is used for some SGI models, |
499 |
* where memory is offset by 128MB to leave room for |
500 |
* EISA space and other things. |
501 |
*/ |
502 |
debug(" (offset by %iMB)", m->memory_offset_in_mb); |
503 |
memory_amount += 1048576 * m->memory_offset_in_mb; |
504 |
} |
505 |
m->memory = memory_new(memory_amount); |
506 |
if (m->machine_type != MACHINE_USERLAND) |
507 |
debug("\n"); |
508 |
|
509 |
/* Create CPUs: */ |
510 |
if (m->cpu_name == NULL) |
511 |
machine_default_cputype(m); |
512 |
if (m->ncpus == 0) { |
513 |
/* TODO: This should be moved elsewhere... */ |
514 |
if (m->machine_type == MACHINE_BEBOX) |
515 |
m->ncpus = 2; |
516 |
else if (m->machine_type == MACHINE_ARC && |
517 |
m->machine_subtype == MACHINE_ARC_NEC_R96) |
518 |
m->ncpus = 2; |
519 |
else if (m->machine_type == MACHINE_ARC && |
520 |
m->machine_subtype == MACHINE_ARC_NEC_R98) |
521 |
m->ncpus = 4; |
522 |
else |
523 |
m->ncpus = 1; |
524 |
} |
525 |
m->cpus = malloc(sizeof(struct cpu *) * m->ncpus); |
526 |
if (m->cpus == NULL) { |
527 |
fprintf(stderr, "out of memory\n"); |
528 |
exit(1); |
529 |
} |
530 |
memset(m->cpus, 0, sizeof(struct cpu *) * m->ncpus); |
531 |
|
532 |
/* Initialize dynamic binary translation, if available: */ |
533 |
if (m->bintrans_enable) |
534 |
bintrans_init(m, m->memory); |
535 |
|
536 |
debug("cpu0"); |
537 |
if (m->ncpus > 1) |
538 |
debug(" .. cpu%i", m->ncpus - 1); |
539 |
debug(": "); |
540 |
for (i=0; i<m->ncpus; i++) { |
541 |
m->cpus[i] = cpu_new(m->memory, m, i, m->cpu_name); |
542 |
if (m->bintrans_enable) |
543 |
bintrans_init_cpu(m->cpus[i]); |
544 |
} |
545 |
debug("\n"); |
546 |
|
547 |
if (m->use_random_bootstrap_cpu) |
548 |
m->bootstrap_cpu = random() % m->ncpus; |
549 |
else |
550 |
m->bootstrap_cpu = 0; |
551 |
|
552 |
cpu = m->cpus[m->bootstrap_cpu]; |
553 |
|
554 |
/* Set cpu->useremul_syscall, and use userland_memory_rw: */ |
555 |
if (m->userland_emul != NULL) { |
556 |
useremul_name_to_useremul(cpu, |
557 |
m->userland_emul, NULL, NULL, NULL); |
558 |
cpu->memory_rw = userland_memory_rw; |
559 |
} |
560 |
|
561 |
if (m->use_x11) |
562 |
x11_init(m); |
563 |
|
564 |
/* Fill memory with random bytes: */ |
565 |
/* TODO: This is MIPS-specific! */ |
566 |
if (m->random_mem_contents) { |
567 |
for (i=0; i<m->physical_ram_in_mb * 1048576; i+=256) { |
568 |
unsigned char data[256]; |
569 |
unsigned int j; |
570 |
for (j=0; j<sizeof(data); j++) |
571 |
data[j] = random() & 255; |
572 |
addr = 0xffffffff80000000ULL + i; |
573 |
cpu->memory_rw(cpu, m->memory, addr, data, sizeof(data), |
574 |
MEM_WRITE, CACHE_NONE | NO_EXCEPTIONS); |
575 |
} |
576 |
} |
577 |
|
578 |
if ((m->machine_type == MACHINE_ARC || |
579 |
m->machine_type == MACHINE_SGI) && m->prom_emulation) |
580 |
arcbios_init(); |
581 |
|
582 |
if (m->userland_emul != NULL) { |
583 |
/* |
584 |
* For userland-only emulation, no machine emulation |
585 |
* is needed. |
586 |
*/ |
587 |
} else { |
588 |
for (i=0; i<n_devices; i++) |
589 |
device_add(m, device_names[i]); |
590 |
|
591 |
machine_setup(m); |
592 |
} |
593 |
|
594 |
diskimage_dump_info(m); |
595 |
|
596 |
/* Load files (ROM code, boot code, ...) into memory: */ |
597 |
if (n_load == 0) { |
598 |
if (m->first_diskimage != NULL) |
599 |
load_bootblock(m, cpu); |
600 |
else { |
601 |
fprintf(stderr, "No executable file(s) loaded, and " |
602 |
"we are not booting directly from a disk image." |
603 |
"\nAborting.\n"); |
604 |
exit(1); |
605 |
} |
606 |
} |
607 |
|
608 |
while (n_load > 0) { |
609 |
byte_order = NO_BYTE_ORDER_OVERRIDE; |
610 |
|
611 |
file_load(m, m->memory, *load_names, &entrypoint, |
612 |
m->arch, &gp, &byte_order, &toc); |
613 |
|
614 |
if (byte_order != NO_BYTE_ORDER_OVERRIDE) |
615 |
cpu->byte_order = byte_order; |
616 |
|
617 |
cpu->pc = entrypoint; |
618 |
|
619 |
switch (m->arch) { |
620 |
case ARCH_MIPS: |
621 |
if ((cpu->pc >> 32) == 0 |
622 |
&& (cpu->pc & 0x80000000ULL)) |
623 |
cpu->pc |= 0xffffffff00000000ULL; |
624 |
|
625 |
cpu->cd.mips.gpr[MIPS_GPR_GP] = gp; |
626 |
|
627 |
if ((cpu->cd.mips.gpr[MIPS_GPR_GP] >> 32) == 0 && |
628 |
(cpu->cd.mips.gpr[MIPS_GPR_GP] & 0x80000000ULL)) |
629 |
cpu->cd.mips.gpr[MIPS_GPR_GP] |= |
630 |
0xffffffff00000000ULL; |
631 |
break; |
632 |
|
633 |
case ARCH_PPC: |
634 |
cpu->cd.ppc.gpr[2] = toc; |
635 |
break; |
636 |
|
637 |
case ARCH_ALPHA: |
638 |
case ARCH_HPPA: |
639 |
case ARCH_SPARC: |
640 |
case ARCH_URISC: |
641 |
break; |
642 |
|
643 |
case ARCH_X86: |
644 |
/* |
645 |
* NOTE: The toc field is used to indicate an ELF64 |
646 |
* load, on AMD64! |
647 |
*/ |
648 |
if (toc != 0) { |
649 |
cpu->cd.x86.mode = 64; |
650 |
} else |
651 |
cpu->pc &= 0xffffffffULL; |
652 |
break; |
653 |
|
654 |
default: |
655 |
fatal("emul_machine_setup(): Internal error: " |
656 |
"Unimplemented arch %i\n", m->arch); |
657 |
exit(1); |
658 |
} |
659 |
|
660 |
/* |
661 |
* For userland emulation, the remaining items |
662 |
* on the command line will be passed as parameters |
663 |
* to the emulated program, and will not be treated |
664 |
* as filenames to load into the emulator. |
665 |
* The program's name will be in load_names[0], and the |
666 |
* rest of the parameters in load_names[1] and up. |
667 |
*/ |
668 |
if (m->userland_emul != NULL) |
669 |
break; |
670 |
|
671 |
n_load --; |
672 |
load_names ++; |
673 |
} |
674 |
|
675 |
if (m->byte_order_override != NO_BYTE_ORDER_OVERRIDE) |
676 |
cpu->byte_order = m->byte_order_override; |
677 |
|
678 |
/* Same byte order and entrypoint for all CPUs: */ |
679 |
for (i=0; i<m->ncpus; i++) |
680 |
if (i != m->bootstrap_cpu) { |
681 |
m->cpus[i]->byte_order = cpu->byte_order; |
682 |
m->cpus[i]->pc = cpu->pc; |
683 |
} |
684 |
|
685 |
if (m->userland_emul != NULL) |
686 |
useremul_setup(cpu, n_load, load_names); |
687 |
|
688 |
/* Startup the bootstrap CPU: */ |
689 |
cpu->bootstrap_cpu_flag = 1; |
690 |
cpu->running = 1; |
691 |
|
692 |
/* ... or pause all CPUs, if start_paused is set: */ |
693 |
if (m->start_paused) { |
694 |
for (i=0; i<m->ncpus; i++) |
695 |
m->cpus[i]->running = 0; |
696 |
} |
697 |
|
698 |
/* Add PC dump points: */ |
699 |
add_dump_points(m); |
700 |
|
701 |
/* TODO: This is MIPS-specific! */ |
702 |
if (m->machine_type == MACHINE_DEC && |
703 |
cpu->cd.mips.cpu_type.mmu_model == MMU3K) |
704 |
add_symbol_name(&m->symbol_context, |
705 |
0x9fff0000, 0x10000, "r2k3k_cache", 0); |
706 |
|
707 |
symbol_recalc_sizes(&m->symbol_context); |
708 |
|
709 |
if (m->max_random_cycles_per_chunk > 0) |
710 |
debug("using random cycle chunks (1 to %i cycles)\n", |
711 |
m->max_random_cycles_per_chunk); |
712 |
|
713 |
/* Special hack for ARC/SGI emulation: */ |
714 |
if ((m->machine_type == MACHINE_ARC || |
715 |
m->machine_type == MACHINE_SGI) && m->prom_emulation) |
716 |
add_arc_components(m); |
717 |
|
718 |
debug("starting cpu%i at ", m->bootstrap_cpu); |
719 |
switch (m->arch) { |
720 |
case ARCH_MIPS: |
721 |
if (cpu->cd.mips.cpu_type.isa_level < 3 || |
722 |
cpu->cd.mips.cpu_type.isa_level == 32) { |
723 |
debug("0x%08x", (int)m->cpus[ |
724 |
m->bootstrap_cpu]->pc); |
725 |
if (cpu->cd.mips.gpr[MIPS_GPR_GP] != 0) |
726 |
debug(" (gp=0x%08x)", (int)m->cpus[ |
727 |
m->bootstrap_cpu]->cd.mips.gpr[ |
728 |
MIPS_GPR_GP]); |
729 |
} else { |
730 |
debug("0x%016llx", (long long)m->cpus[ |
731 |
m->bootstrap_cpu]->pc); |
732 |
if (cpu->cd.mips.gpr[MIPS_GPR_GP] != 0) |
733 |
debug(" (gp=0x%016llx)", (long long) |
734 |
cpu->cd.mips.gpr[MIPS_GPR_GP]); |
735 |
} |
736 |
break; |
737 |
case ARCH_PPC: |
738 |
if (cpu->cd.ppc.bits == 32) |
739 |
debug("0x%08x", (int)entrypoint); |
740 |
else |
741 |
debug("0x%016llx", (long long)entrypoint); |
742 |
break; |
743 |
case ARCH_URISC: |
744 |
{ |
745 |
char tmps[100]; |
746 |
unsigned char buf[sizeof(uint64_t)]; |
747 |
|
748 |
cpu->memory_rw(cpu, m->memory, 0, buf, sizeof(buf), |
749 |
MEM_READ, CACHE_NONE | NO_EXCEPTIONS); |
750 |
|
751 |
entrypoint = 0; |
752 |
for (i=0; i<cpu->cd.urisc.wordlen/8; i++) { |
753 |
entrypoint <<= 8; |
754 |
if (cpu->byte_order == EMUL_BIG_ENDIAN) |
755 |
entrypoint += buf[i]; |
756 |
else |
757 |
entrypoint += buf[cpu-> |
758 |
cd.urisc.wordlen/8 - 1 - i]; |
759 |
} |
760 |
|
761 |
sprintf(tmps, "0x%%0%illx", cpu->cd.urisc.wordlen / 4); |
762 |
debug(tmps, (long long)entrypoint); |
763 |
cpu->pc = entrypoint; |
764 |
} |
765 |
break; |
766 |
case ARCH_X86: |
767 |
if (cpu->cd.x86.mode == 16) |
768 |
debug("0x%04x:0x%04x", cpu->cd.x86.s[X86_S_CS], |
769 |
(int)cpu->pc); |
770 |
else if (cpu->cd.x86.mode == 32) |
771 |
debug("0x%08x", (int)cpu->pc); |
772 |
else |
773 |
debug("0x%016llx", (long long)cpu->pc); |
774 |
break; |
775 |
default: |
776 |
debug("0x%016llx", (long long)cpu->pc); |
777 |
} |
778 |
debug("\n"); |
779 |
|
780 |
debug_indentation(-iadd); |
781 |
} |
782 |
|
783 |
|
784 |
/* |
785 |
* emul_dumpinfo(): |
786 |
* |
787 |
* Dump info about all machines in an emul. |
788 |
*/ |
789 |
void emul_dumpinfo(struct emul *e) |
790 |
{ |
791 |
int j, nm, iadd = 4; |
792 |
|
793 |
if (e->net != NULL) |
794 |
net_dumpinfo(e->net); |
795 |
|
796 |
nm = e->n_machines; |
797 |
for (j=0; j<nm; j++) { |
798 |
debug("machine %i: \"%s\"\n", j, e->machines[j]->name); |
799 |
debug_indentation(iadd); |
800 |
machine_dumpinfo(e->machines[j]); |
801 |
debug_indentation(-iadd); |
802 |
} |
803 |
} |
804 |
|
805 |
|
806 |
/* |
807 |
* emul_simple_init(): |
808 |
* |
809 |
* For a normal setup: |
810 |
* |
811 |
* o) Initialize a network. |
812 |
* o) Initialize one machine. |
813 |
* |
814 |
* For a userland-only setup: |
815 |
* |
816 |
* o) Initialize a "pseudo"-machine. |
817 |
*/ |
818 |
void emul_simple_init(struct emul *emul) |
819 |
{ |
820 |
int iadd=4; |
821 |
struct machine *m; |
822 |
|
823 |
if (emul->n_machines != 1) { |
824 |
fprintf(stderr, "emul_simple_init(): n_machines != 1\n"); |
825 |
exit(1); |
826 |
} |
827 |
|
828 |
m = emul->machines[0]; |
829 |
|
830 |
if (m->userland_emul == NULL) { |
831 |
debug("Simple setup...\n"); |
832 |
debug_indentation(iadd); |
833 |
|
834 |
/* Create a network: */ |
835 |
emul->net = net_init(emul, NET_INIT_FLAG_GATEWAY, |
836 |
"10.0.0.0", 8); |
837 |
} else { |
838 |
/* Userland pseudo-machine: */ |
839 |
debug("Syscall emulation (userland-only) setup...\n"); |
840 |
debug_indentation(iadd); |
841 |
} |
842 |
|
843 |
/* Create the machine: */ |
844 |
emul_machine_setup(m, extra_argc, extra_argv, 0, NULL); |
845 |
|
846 |
debug_indentation(-iadd); |
847 |
} |
848 |
|
849 |
|
850 |
/* |
851 |
* emul_create_from_configfile(): |
852 |
* |
853 |
* Create an emul struct by reading settings from a configuration file. |
854 |
*/ |
855 |
struct emul *emul_create_from_configfile(char *fname) |
856 |
{ |
857 |
int iadd = 4; |
858 |
struct emul *e = emul_new(fname); |
859 |
FILE *f; |
860 |
char buf[128]; |
861 |
size_t len; |
862 |
|
863 |
debug("Creating emulation from configfile \"%s\":\n", fname); |
864 |
debug_indentation(iadd); |
865 |
|
866 |
f = fopen(fname, "r"); |
867 |
if (f == NULL) { |
868 |
perror(fname); |
869 |
exit(1); |
870 |
} |
871 |
|
872 |
/* Read header: (must be !!gxemul) */ |
873 |
len = fread(buf, 1, 8, f); |
874 |
if (len != 8 || strncmp(buf, "!!gxemul", 8) != 0) { |
875 |
fprintf(stderr, "%s: must start with '!!gxemul'\n", fname); |
876 |
exit(1); |
877 |
} |
878 |
|
879 |
/* Restart from beginning: */ |
880 |
rewind(f); |
881 |
|
882 |
emul_parse_config(e, f); |
883 |
|
884 |
fclose(f); |
885 |
debug_indentation(-iadd); |
886 |
return e; |
887 |
} |
888 |
|
889 |
|
890 |
/* |
891 |
* emul_run(): |
892 |
* |
893 |
* o) Set up things needed before running emulations. |
894 |
* |
895 |
* o) Run emulations (one or more, in parallel). |
896 |
* |
897 |
* o) De-initialize things. |
898 |
*/ |
899 |
void emul_run(struct emul **emuls, int n_emuls) |
900 |
{ |
901 |
struct emul *e; |
902 |
int i = 0, j, go = 1, n, anything; |
903 |
|
904 |
if (n_emuls < 1) { |
905 |
fprintf(stderr, "emul_run(): no thing to do\n"); |
906 |
return; |
907 |
} |
908 |
|
909 |
atexit(fix_console); |
910 |
|
911 |
i = 79; |
912 |
while (i-- > 0) |
913 |
debug("-"); |
914 |
debug("\n\n"); |
915 |
|
916 |
/* Initialize the interactive debugger: */ |
917 |
debugger_init(emuls, n_emuls); |
918 |
|
919 |
/* |
920 |
* console_init_main() makes sure that the terminal is in a |
921 |
* reasonable state. |
922 |
* |
923 |
* The SIGINT handler is for CTRL-C (enter the interactive debugger). |
924 |
* |
925 |
* The SIGCONT handler is invoked whenever the user presses CTRL-Z |
926 |
* (or sends SIGSTOP) and then continues. It makes sure that the |
927 |
* terminal is in an expected state. |
928 |
*/ |
929 |
console_init_main(emuls[0]); /* TODO: what is a good argument? */ |
930 |
signal(SIGINT, debugger_activate); |
931 |
signal(SIGCONT, console_sigcont); |
932 |
|
933 |
/* Not in verbose mode? Then set quiet_mode. */ |
934 |
if (!verbose) |
935 |
quiet_mode = 1; |
936 |
|
937 |
/* Initialize all CPUs in all machines in all emulations: */ |
938 |
for (i=0; i<n_emuls; i++) { |
939 |
e = emuls[i]; |
940 |
if (e == NULL) |
941 |
continue; |
942 |
for (j=0; j<e->n_machines; j++) |
943 |
cpu_run_init(e, e->machines[j]); |
944 |
} |
945 |
|
946 |
/* |
947 |
* MAIN LOOP: |
948 |
* |
949 |
* Run all emulations in parallel, running each machine in |
950 |
* each emulation. |
951 |
*/ |
952 |
while (go) { |
953 |
go = 0; |
954 |
|
955 |
x11_check_event(emuls, n_emuls); |
956 |
|
957 |
for (i=0; i<n_emuls; i++) { |
958 |
e = emuls[i]; |
959 |
if (e == NULL) |
960 |
continue; |
961 |
|
962 |
for (j=0; j<e->n_machines; j++) { |
963 |
/* TODO: cpu_run() is a strange name, since |
964 |
there can be multiple cpus in a machine */ |
965 |
anything = cpu_run(e, e->machines[j]); |
966 |
if (anything) |
967 |
go = 1; |
968 |
} |
969 |
} |
970 |
} |
971 |
|
972 |
/* Deinitialize all CPUs in all machines in all emulations: */ |
973 |
for (i=0; i<n_emuls; i++) { |
974 |
e = emuls[i]; |
975 |
if (e == NULL) |
976 |
continue; |
977 |
for (j=0; j<e->n_machines; j++) |
978 |
cpu_run_deinit(e, e->machines[j]); |
979 |
} |
980 |
|
981 |
/* force_debugger_at_exit flag set? Then enter the debugger: */ |
982 |
if (force_debugger_at_exit) { |
983 |
quiet_mode = 0; |
984 |
debugger_reset(); |
985 |
debugger(); |
986 |
} |
987 |
|
988 |
/* Any machine using X11? Then we should wait before exiting: */ |
989 |
n = 0; |
990 |
for (i=0; i<n_emuls; i++) |
991 |
for (j=0; j<emuls[i]->n_machines; j++) |
992 |
if (emuls[i]->machines[j]->use_x11) |
993 |
n++; |
994 |
if (n > 0) { |
995 |
printf("Press enter to quit.\n"); |
996 |
while (!console_charavail(MAIN_CONSOLE)) { |
997 |
x11_check_event(emuls, n_emuls); |
998 |
usleep(1); |
999 |
} |
1000 |
console_readchar(MAIN_CONSOLE); |
1001 |
} |
1002 |
|
1003 |
console_deinit(); |
1004 |
} |
1005 |
|