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-rw-r--r--sim/ppc/emul_bugapi.c581
1 files changed, 0 insertions, 581 deletions
diff --git a/sim/ppc/emul_bugapi.c b/sim/ppc/emul_bugapi.c
deleted file mode 100644
index 97028bf9de9..00000000000
--- a/sim/ppc/emul_bugapi.c
+++ /dev/null
@@ -1,581 +0,0 @@
-/* This file is part of the program psim.
-
- Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- */
-
-
-#ifndef _EMUL_BUGAPI_C_
-#define _EMUL_BUGAPI_C_
-
-/* Note: this module is called via a table. There is no benefit in
- making it inline */
-
-#include "emul_generic.h"
-#include "emul_bugapi.h"
-
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-
-#ifdef HAVE_STRING_H
-#include <string.h>
-#else
-#ifdef HAVE_STRINGS_H
-#include <strings.h>
-#endif
-#endif
-
-
-/* EMULATION
-
- BUG - Motorola's embeded firmware BUG interface
-
- DESCRIPTION
-
-
-
- */
-
-
-/* from PowerPCBug Debugging Package User's Manual, part 2 of 2 and also bug.S - Dale Rahn */
-#define _INCHR 0x000 /* Input character */
-#define _INSTAT 0x001 /* Input serial port status */
-#define _INLN 0x002 /* Input line (pointer / pointer format) */
-#define _READSTR 0x003 /* Input string (pointer / count format) */
-#define _READLN 0x004 /* Input line (pointer / count format) */
-#define _CHKBRK 0x005 /* Check for break */
-#define _DSKRD 0x010 /* Disk read */
-#define _DSKWR 0x011 /* Disk write */
-#define _DSKCFIG 0x012 /* Disk configure */
-#define _DSKFMT 0x014 /* Disk format */
-#define _DSKCTRL 0x015 /* Disk control */
-#define _NETRD 0x018 /* Read from host */
-#define _NETWR 0x019 /* Write to host */
-#define _NETCFIG 0x01a /* Configure network parameters */
-#define _NETOPN 0x01b /* Open file for reading */
-#define _NETFRD 0x01c /* Retreive specified file blocks */
-#define _NETCTRL 0x01d /* Implement special control functions */
-#define _OUTCHR 0x020 /* Output character (pointer / pointer format) */
-#define _OUTSTR 0x021 /* Output string (pointer / pointer format) */
-#define _OUTLN 0x022 /* Output line (pointer / pointer format) */
-#define _WRITE 0x023 /* Output string (pointer / count format) */
-#define _WRITELN 0x024 /* Output line (pointer / count format) */
-#define _WRITDLN 0x025 /* Output line with data (pointer / count format) */
-#define _PCRLF 0x026 /* Output carriage return and line feed */
-#define _ERASLN 0x027 /* Erase line */
-#define _WRITD 0x028 /* Output string with data (pointer / count format) */
-#define _SNDBRK 0x029 /* Send break */
-#define _DELAY 0x043 /* Timer delay */
-#define _RTC_TM 0x050 /* Time initialization for RTC */
-#define _RTC_DT 0x051 /* Date initialization for RTC */
-#define _RTC_DSP 0x052 /* Display RTC time and date */
-#define _RTC_RD 0x053 /* Read the RTC registers */
-#define _REDIR 0x060 /* Redirect I/O of a system call function */
-#define _REDIR_I 0x061 /* Redirect input */
-#define _REDIR_O 0x062 /* Redirect output */
-#define _RETURN 0x063 /* Return to PPCbug */
-#define _BINDEC 0x064 /* Convert binary to binary coded decimal (BCD) */
-#define _CHANGEV 0x067 /* Parse value */
-#define _STRCMP 0x068 /* Compare two strings (pointer / count format) */
-#define _MULU32 0x069 /* Multiply two 32-bit unsigned integers */
-#define _DIVU32 0x06a /* Divide two 32-bit unsigned integers */
-#define _CHK_SUM 0x06b /* Generate checksum */
-#define _BRD_ID 0x070 /* Return pointer to board ID packet */
-#define _ENVIRON 0x071 /* Access boot environment parameters */
-#define _DIAGFCN 0x074 /* Diagnostic function(s) */
-#define _SIOPEPS 0x090 /* Retrieve SCSI pointers */
-#define _IOINQ 0x120 /* Port inquire */
-#define _IOINFORM 0x124 /* Port inform */
-#define _IOCONFIG 0x128 /* Port configure */
-#define _IODELETE 0x12c /* Port delete */
-#define _SYMBOLTA 0x130 /* Attach symbol table */
-#define _SYMBOLDA 0x131 /* Detach symbol table */
-
-struct bug_map {
- int value;
- const char *info;
-};
-
-static const struct bug_map bug_mapping[] = {
- { _INCHR, ".INCHR -- Input character" },
- { _INSTAT, ".INSTAT -- Input serial port status" },
- { _INLN, ".INLN -- Input line (pointer / pointer format)" },
- { _READSTR, ".READSTR -- Input string (pointer / count format)" },
- { _READLN, ".READLN -- Input line (pointer / count format)" },
- { _CHKBRK, ".CHKBRK -- Check for break" },
- { _DSKRD, ".DSKRD -- Disk read" },
- { _DSKWR, ".DSKWR -- Disk write" },
- { _DSKCFIG, ".DSKCFIG -- Disk configure" },
- { _DSKFMT, ".DSKFMT -- Disk format" },
- { _DSKCTRL, ".DSKCTRL -- Disk control" },
- { _NETRD, ".NETRD -- Read from host" },
- { _NETWR, ".NETWR -- Write to host" },
- { _NETCFIG, ".NETCFIG -- Configure network parameters" },
- { _NETOPN, ".NETOPN -- Open file for reading" },
- { _NETFRD, ".NETFRD -- Retreive specified file blocks" },
- { _NETCTRL, ".NETCTRL -- Implement special control functions" },
- { _OUTCHR, ".OUTCHR -- Output character" },
- { _OUTSTR, ".OUTSTR -- Output string (pointer / pointer format)" },
- { _OUTLN, ".OUTLN -- Output line (pointer / pointer format)" },
- { _WRITE, ".WRITE -- Output string (pointer / count format)" },
- { _WRITELN, ".WRITELN -- Output line (pointer / count format)" },
- { _WRITDLN, ".WRITDLN -- Output line with data (pointer / count format)" },
- { _PCRLF, ".PCRLF -- Output carriage return and line feed" },
- { _ERASLN, ".ERASLN -- Erase line" },
- { _WRITD, ".WRITD -- Output string with data (pointer / count format)" },
- { _SNDBRK, ".SNDBRK -- Send break" },
- { _DELAY, ".DELAY -- Timer delay" },
- { _RTC_TM, ".RTC_TM -- Time initialization for RTC" },
- { _RTC_DT, ".RTC_DT -- Date initialization for RTC" },
- { _RTC_DSP, ".RTC_DSP -- Display RTC time and date" },
- { _RTC_RD, ".RTC_RD -- Read the RTC registers" },
- { _REDIR, ".REDIR -- Redirect I/O of a system call function" },
- { _REDIR, ".REDIR -- Redirect input" },
- { _REDIR, ".REDIR -- Redirect output" },
- { _RETURN, ".RETURN -- Return to PPCbug" },
- { _BINDEC, ".BINDEC -- Convert binary to binary coded decimal (BCD)" },
- { _CHANGEV, ".CHANGEV -- Parse value" },
- { _STRCMP, ".STRCMP -- Compare two strings (pointer / count format)" },
- { _MULU32, ".MULU32 -- Multiply two 32-bit unsigned integers" },
- { _DIVU32, ".DIVU32 -- Divide two 32-bit unsigned integers" },
- { _CHK_SUM, ".CHK_SUM -- Generate checksum" },
- { _BRD_ID, ".BRD_ID -- Return pointer to board ID packet" },
- { _ENVIRON, ".ENVIRON -- Access boot environment parameters" },
- { _DIAGFCN, ".DIAGFCN -- Diagnostic function(s)" },
- { _SIOPEPS, ".SIOPEPS -- Retrieve SCSI pointers" },
- { _IOINQ, ".IOINQ -- Port inquire" },
- { _IOINFORM, ".IOINFORM -- Port inform" },
- { _IOCONFIG, ".IOCONFIG -- Port configure" },
- { _IODELETE, ".IODELETE -- Port delete" },
- { _SYMBOLTA, ".SYMBOLTA -- Attach symbol table" },
- { _SYMBOLDA, ".SYMBOLDA -- Detach symbol table" },
-};
-
-#ifndef BUGAPI_END_ADDRESS
-#define BUGAPI_END_ADDRESS 0x100000
-#endif
-
-enum {
- nr_bugapi_disks = 2,
-};
-
-
-struct _os_emul_data {
- device *root;
- unsigned_word memory_size;
- unsigned_word top_of_stack;
- int interrupt_prefix;
- unsigned_word interrupt_vector_address;
- unsigned_word system_call_address;
- unsigned_word stall_cpu_loop_address;
- int little_endian;
- int floating_point_available;
- /* I/O devices */
- device_instance *output;
- device_instance *input;
- device_instance *(disk[nr_bugapi_disks]);
-};
-
-
-static os_emul_data *
-emul_bugapi_create(device *root,
- bfd *image,
- const char *name)
-{
- device *node;
- os_emul_data *bugapi;
-
- /* check it really is for us */
- if (name != NULL
- && strcmp(name, "bugapi") != 0
- && strcmp(name, "bug") != 0)
- return NULL;
- if (image != NULL
- && name == NULL
- && bfd_get_start_address(image) >= BUGAPI_END_ADDRESS)
- return NULL;
-
- bugapi = ZALLOC(os_emul_data);
-
- /* options */
- emul_add_tree_options(root, image, "bug", "oea",
- 1 /*oea-interrupt-prefix*/);
-
- /* add some real hardware, include eeprom memory for the eeprom trap
- addresses */
- emul_add_tree_hardware(root);
- node = tree_parse(root, "/openprom/memory@0xfff00000");
- tree_parse(node, "./psim,description \"eeprom trap addresses");
- tree_parse(node, "./reg 0xfff00000 0x3000");
-
- bugapi->root = root;
-
- bugapi->memory_size
- = tree_find_integer_property(root, "/openprom/options/oea-memory-size");
- bugapi->interrupt_prefix =
- tree_find_integer_property(root, "/openprom/options/oea-interrupt-prefix");
- bugapi->interrupt_vector_address = (bugapi->interrupt_prefix
- ? MASK(0, 43)
- : 0);
- bugapi->system_call_address = (bugapi->interrupt_vector_address + 0x00c00);
- bugapi->stall_cpu_loop_address = (bugapi->system_call_address + 0x000f0);
- bugapi->top_of_stack = bugapi->memory_size - 0x1000;
- bugapi->little_endian
- = tree_find_boolean_property(root, "/options/little-endian?");
- bugapi->floating_point_available
- = tree_find_boolean_property(root, "/openprom/options/floating-point?");
- bugapi->input = NULL;
- bugapi->output = NULL;
-
- /* initialization */
- if (image != NULL)
- tree_parse(root, "/openprom/init/register/0.pc 0x%lx",
- (unsigned long)bfd_get_start_address(image));
- tree_parse(root, "/openprom/init/register/pc 0x%lx",
- (unsigned long)bugapi->stall_cpu_loop_address);
- tree_parse(root, "/openprom/init/register/sp 0x%lx",
- (unsigned long)(bugapi->top_of_stack - 16));
- tree_parse(root, "/openprom/init/register/msr 0x%x",
- (msr_recoverable_interrupt
- | (bugapi->little_endian
- ? (msr_little_endian_mode
- | msr_interrupt_little_endian_mode)
- : 0)
- | (bugapi->floating_point_available
- ? msr_floating_point_available
- : 0)
- | (bugapi->interrupt_prefix
- ? msr_interrupt_prefix
- : 0)
- ));
-
- /* patch the system call instruction to call this emulation and then
- do an rfi */
- node = tree_parse(root, "/openprom/init/data@0x%lx",
- (unsigned long)bugapi->system_call_address);
- tree_parse(node, "./psim,description \"system-call trap instruction");
- tree_parse(node, "./real-address 0x%lx",
- (unsigned long)bugapi->system_call_address);
- tree_parse(node, "./data 0x%x", emul_call_instruction);
- node = tree_parse(root, "/openprom/init/data@0x%lx",
- (unsigned long)bugapi->system_call_address + 4);
- tree_parse(node, "./psim,description \"return from interrupt instruction");
- tree_parse(node, "./real-address 0x%lx",
- (unsigned long)bugapi->system_call_address + 4);
- tree_parse(node, "./data 0x%x",
- emul_rfi_instruction);
-
- /* patch the end of the system call instruction so that it contains
- a loop to self instruction and point all the cpu's at this */
- node = tree_parse(root, "/openprom/init/data@0x%lx",
- (unsigned long)bugapi->stall_cpu_loop_address);
- tree_parse(node, "./psim,description \"cpu-loop instruction");
- tree_parse(node, "./real-address 0x%lx",
- (unsigned long)bugapi->stall_cpu_loop_address);
- tree_parse(node, "./data 0x%lx",
- (unsigned long)emul_loop_instruction);
-
- if (image != NULL)
- tree_parse(root, "/openprom/init/stack/stack-type %s",
- (image->xvec->flavour == bfd_target_elf_flavour
- ? "ppc-elf"
- : "ppc-xcoff"));
-
- if (image != NULL)
- tree_parse(root, "/openprom/init/load-binary/file-name \"%s",
- bfd_get_filename(image));
-
- return bugapi;
-}
-
-static void
-emul_bugapi_init(os_emul_data *bugapi,
- int nr_cpus)
-{
- int i;
- /* get the current input/output devices that were created during
- device tree initialization */
- bugapi->input = tree_find_ihandle_property(bugapi->root, "/chosen/stdin");
- bugapi->output = tree_find_ihandle_property(bugapi->root, "/chosen/stdout");
- /* if present, extract the selected disk devices */
- for (i = 0; i < nr_bugapi_disks; i++) {
- char disk[32];
- char *chp;
- strcpy(disk, "/chosen/disk0");
- ASSERT(sizeof(disk) > strlen(disk));
- chp = strchr(disk, '0');
- *chp = *chp + i;
- if (tree_find_property(bugapi->root, disk) != NULL)
- bugapi->disk[i] = tree_find_ihandle_property(bugapi->root, disk);
- }
-}
-
-static const char *
-emul_bugapi_instruction_name(int call_id)
-{
- static char buffer[40];
- int i;
-
- for (i = 0; i < sizeof (bug_mapping) / sizeof (bug_mapping[0]); i++)
- {
- if (bug_mapping[i].value == call_id)
- return bug_mapping[i].info;
- }
-
- (void) sprintf (buffer, "Unknown bug call 0x%x", call_id);
- return buffer;
-}
-
-static int
-emul_bugapi_do_read(os_emul_data *bugapi,
- cpu *processor,
- unsigned_word cia,
- unsigned_word buf,
- int nbytes)
-{
- unsigned char *scratch_buffer;
- int status;
-
- /* get a tempoary bufer */
- scratch_buffer = (unsigned char *) zalloc(nbytes);
-
- /* check if buffer exists by reading it */
- emul_read_buffer((void *)scratch_buffer, buf, nbytes, processor, cia);
-
- /* read */
- status = device_instance_read(bugapi->input,
- (void *)scratch_buffer, nbytes);
-
- /* -1 = error, -2 = nothing available - see "serial" [IEEE1275] */
- if (status < 0) {
- status = 0;
- }
-
- if (status > 0) {
- emul_write_buffer((void *)scratch_buffer, buf, status, processor, cia);
-
- /* Bugapi chops off the trailing n, but leaves it in the buffer */
- if (scratch_buffer[status-1] == '\n' || scratch_buffer[status-1] == '\r')
- status--;
- }
-
- zfree(scratch_buffer);
- return status;
-}
-
-static void
-emul_bugapi_do_diskio(os_emul_data *bugapi,
- cpu *processor,
- unsigned_word cia,
- unsigned_word descriptor_addr,
- int call_id)
-{
- struct dskio_descriptor {
- unsigned_1 ctrl_lun;
- unsigned_1 dev_lun;
- unsigned_2 status;
- unsigned_word pbuffer;
- unsigned_4 blk_num;
- unsigned_2 blk_cnt;
- unsigned_1 flag;
-#define BUG_FILE_MARK 0x80
-#define IGNORE_FILENUM 0x02
-#define END_OF_FILE 0x01
- unsigned_1 addr_mod;
- } descriptor;
- int block;
- emul_read_buffer(&descriptor, descriptor_addr, sizeof(descriptor),
- processor, cia);
- T2H(descriptor.ctrl_lun);
- T2H(descriptor.dev_lun);
- T2H(descriptor.status);
- T2H(descriptor.pbuffer);
- T2H(descriptor.blk_num);
- T2H(descriptor.blk_cnt);
- T2H(descriptor.flag);
- T2H(descriptor.addr_mod);
- if (descriptor.dev_lun >= nr_bugapi_disks
- || bugapi->disk[descriptor.dev_lun] == NULL) {
- error("emul_bugapi_do_diskio: attempt to access unconfigured disk /chosen/disk%d",
- descriptor.dev_lun);
- }
- else {
- for (block = 0; block < descriptor.blk_cnt; block++) {
- device_instance *disk = bugapi->disk[descriptor.dev_lun];
- unsigned_1 buf[512]; /*????*/
- unsigned_word block_nr = descriptor.blk_num + block;
- unsigned_word byte_nr = block_nr * sizeof(buf);
- unsigned_word block_addr = descriptor.pbuffer + block*sizeof(buf);
- if (device_instance_seek(disk, 0, byte_nr) < 0)
- error("emul_bugapi_do_diskio: bad seek\n");
- switch (call_id) {
- case _DSKRD:
- if (device_instance_read(disk, buf, sizeof(buf)) != sizeof(buf))
- error("emul_`bugapi_do_diskio: bad read\n");
- emul_write_buffer(buf, block_addr, sizeof(buf), processor, cia);
- break;
- case _DSKWR:
- emul_read_buffer(buf, block_addr, sizeof(buf), processor, cia);
- if (device_instance_write(disk, buf, sizeof(buf)) != sizeof(buf))
- error("emul_bugapi_do_diskio: bad write\n");
- break;
- default:
- error("emul_bugapi_do_diskio: bad switch\n");
- }
- }
- }
-}
-
-static void
-emul_bugapi_do_write(os_emul_data *bugapi,
- cpu *processor,
- unsigned_word cia,
- unsigned_word buf,
- int nbytes,
- const char *suffix)
-{
- void *scratch_buffer = NULL;
-
- /* get a tempoary bufer */
- if (nbytes > 0)
- {
- scratch_buffer = zalloc(nbytes);
-
- /* copy in */
- emul_read_buffer(scratch_buffer, buf, nbytes,
- processor, cia);
-
- /* write */
- device_instance_write(bugapi->output, scratch_buffer, nbytes);
-
- zfree(scratch_buffer);
- }
-
- if (suffix)
- device_instance_write(bugapi->output, suffix, strlen(suffix));
-
- flush_stdoutput ();
-}
-
-static int
-emul_bugapi_instruction_call(cpu *processor,
- unsigned_word cia,
- unsigned_word ra,
- os_emul_data *bugapi)
-{
- const int call_id = cpu_registers(processor)->gpr[10];
- unsigned char uc;
-
-#define MY_INDEX itable_instruction_call
- ITRACE (trace_os_emul,
- (" 0x%x %s, r3 = 0x%lx, r4 = 0x%lx\n",
- call_id, emul_bugapi_instruction_name (call_id),
- (long)cpu_registers(processor)->gpr[3],
- (long)cpu_registers(processor)->gpr[4]));;
-
- /* check that this isn't an invalid instruction */
- if (cia != bugapi->system_call_address)
- return 0;
-
- switch (call_id) {
- default:
- error("emul-bugapi: unimplemented bugapi %s from address 0x%lx\n",
- emul_bugapi_instruction_name (call_id), SRR0);
- break;
-
- /* read a single character, output r3 = byte */
- /* FIXME: Add support to unbuffer input */
- case _INCHR:
- if (device_instance_read(bugapi->input, (void *)&uc, 1) <= 0)
- uc = 0;
- cpu_registers(processor)->gpr[3] = uc;
- break;
-
- /* read a line of at most 256 bytes, r3 = ptr to 1st byte, output r3 = ptr to last byte+1 */
- case _INLN:
- cpu_registers(processor)->gpr[3] += emul_bugapi_do_read(bugapi,
- processor, cia,
- cpu_registers(processor)->gpr[3],
- 256);
- break;
-
- /* output a character, r3 = character */
- case _OUTCHR:
- {
- char out = (char)cpu_registers(processor)->gpr[3];
- device_instance_write(bugapi->output, &out, 1);
- break;
- }
-
- /* output a string, r3 = ptr to 1st byte, r4 = ptr to last byte+1 */
- case _OUTSTR:
- emul_bugapi_do_write(bugapi,
- processor, cia,
- cpu_registers(processor)->gpr[3],
- cpu_registers(processor)->gpr[4] - cpu_registers(processor)->gpr[3],
- (const char *)0);
- break;
-
- /* output a string followed by \r\n, r3 = ptr to 1st byte, r4 = ptr to last byte+1 */
- case _OUTLN:
-
- emul_bugapi_do_write(bugapi,
- processor, cia,
- cpu_registers(processor)->gpr[3],
- cpu_registers(processor)->gpr[4] - cpu_registers(processor)->gpr[3],
- "\n");
- break;
-
- /* output a \r\n */
- case _PCRLF:
- device_instance_write(bugapi->output, "\n", 1);
- break;
-
- /* read/write blocks of data to/from the disk */
- case _DSKWR:
- case _DSKRD:
- emul_bugapi_do_diskio(bugapi, processor, cia,
- cpu_registers(processor)->gpr[3],
- call_id);
- break;
-
- /* return to ppcbug monitor (exiting with gpr[3] as status is not
- part of the bug monitor) */
- case _RETURN:
- cpu_halt(processor, cia, was_exited, cpu_registers(processor)->gpr[3]);
- break;
- }
- return 1;
- /* the instruction following this one is a RFI. Thus by just
- continuing the return from system call is performed */
-}
-
-const os_emul emul_bugapi = {
- "bugapi",
- emul_bugapi_create,
- emul_bugapi_init,
- 0, /*system_call*/
- emul_bugapi_instruction_call,
- 0 /*data*/
-};
-
-#endif
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