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Diffstat (limited to 'gdb/sparclet-rom.c')
| -rw-r--r-- | gdb/sparclet-rom.c | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/gdb/sparclet-rom.c b/gdb/sparclet-rom.c new file mode 100644 index 0000000..992cca1 --- /dev/null +++ b/gdb/sparclet-rom.c @@ -0,0 +1,296 @@ +/* Remote target glue for the SPARC Sparclet ROM monitor. + Copyright 1995, 1996 Free Software Foundation, Inc. + +This file is part of GDB. + +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. */ + + +#include "defs.h" +#include "gdbcore.h" +#include "target.h" +#include "monitor.h" +#include "serial.h" +#include "srec.h" +#include "symtab.h" +#include "symfile.h" /* for generic_load */ +#include <time.h> + +extern void report_transfer_performance PARAMS ((unsigned long, time_t, time_t)); + +static struct target_ops sparclet_ops; + +static void sparclet_open PARAMS ((char *args, int from_tty)); + +/* This array of registers need to match the indexes used by GDB. + This exists because the various ROM monitors use different strings + than does GDB, and don't necessarily support all the registers + either. So, typing "info reg sp" becomes a "r30". */ + +/*PSR 0x00000080 impl ver icc AW LE EE EC EF PIL S PS ET CWP WIM + 0x0 0x0 0x0 0 0 0 0 0 0x0 1 0 0 0x00 0x2 + 0000010 + INS LOCALS OUTS GLOBALS + 0 0x00000000 0x00000000 0x00000000 0x00000000 + 1 0x00000000 0x00000000 0x00000000 0x00000000 + 2 0x00000000 0x00000000 0x00000000 0x00000000 + 3 0x00000000 0x00000000 0x00000000 0x00000000 + 4 0x00000000 0x00000000 0x00000000 0x00000000 + 5 0x00000000 0x00001000 0x00000000 0x00000000 + 6 0x00000000 0x00000000 0x123f0000 0x00000000 + 7 0x00000000 0x00000000 0x00000000 0x00000000 +pc: 0x12010000 0x00000000 unimp +npc: 0x12010004 0x00001000 unimp 0x1000 +tbr: 0x00000000 +y: 0x00000000 +*/ +/* these correspond to the offsets from tm-* files from config directories */ + +/* is wim part of psr?? */ +/* monitor wants lower case */ +static char *sparclet_regnames[NUM_REGS] = REGISTER_NAMES; + + +/* Function: sparclet_supply_register + Just returns with no action. + This function is required, because parse_register_dump (monitor.c) + expects to be able to call it. If we don't supply something, it will + call a null pointer and core-dump. Since this function does not + actually do anything, GDB will request the registers individually. */ + +static void +sparclet_supply_register (regname, regnamelen, val, vallen) + char *regname; + int regnamelen; + char *val; + int vallen; +{ + return; +} + +static void +sparclet_load (desc, file, hashmark) + serial_t desc; + char *file; + int hashmark; +{ + bfd *abfd; + asection *s; + int i; + CORE_ADDR load_offset; + time_t start_time, end_time; + unsigned long data_count = 0; + + /* enable user to specify address for downloading as 2nd arg to load */ + + i = sscanf(file, "%*s 0x%lx", &load_offset); + if (i >= 1 ) + { + char *p; + + for (p = file; *p != '\000' && !isspace (*p); p++); + + *p = '\000'; + } + else + load_offset = 0; + + abfd = bfd_openr (file, 0); + if (!abfd) + { + printf_filtered ("Unable to open file %s\n", file); + return; + } + + if (bfd_check_format (abfd, bfd_object) == 0) + { + printf_filtered ("File is not an object file\n"); + return; + } + + start_time = time (NULL); + + for (s = abfd->sections; s; s = s->next) + if (s->flags & SEC_LOAD) + { + bfd_size_type section_size; + bfd_vma vma; + + vma = bfd_get_section_vma (abfd, s) + load_offset; + section_size = bfd_section_size (abfd, s); + + data_count += section_size; + + printf_filtered ("%s\t: 0x%4x .. 0x%4x ", + bfd_get_section_name (abfd, s), vma, + vma + section_size); + gdb_flush (gdb_stdout); + + monitor_printf ("load c r %x %x\r", vma, section_size); + + monitor_expect ("load: loading ", NULL, 0); + monitor_expect ("\r", NULL, 0); + + for (i = 0; i < section_size; i += 2048) + { + int numbytes; + char buf[2048]; + + numbytes = min (sizeof buf, section_size - i); + + bfd_get_section_contents (abfd, s, buf, i, numbytes); + + SERIAL_WRITE (desc, buf, numbytes); + + if (hashmark) + { + putchar_unfiltered ('#'); + gdb_flush (gdb_stdout); + } + } /* Per-packet (or S-record) loop */ + + monitor_expect_prompt (NULL, 0); + + putchar_unfiltered ('\n'); + } /* Loadable sections */ + + monitor_printf ("reg pc %x\r", bfd_get_start_address (abfd)); + monitor_expect_prompt (NULL, 0); + monitor_printf ("reg npc %x\r", bfd_get_start_address (abfd) + 4); + monitor_expect_prompt (NULL, 0); + + monitor_printf ("run\r"); + + end_time = time (NULL); + + if (hashmark) + putchar_unfiltered ('\n'); + + report_transfer_performance (data_count, start_time, end_time); + + pop_target (); + push_remote_target (monitor_get_dev_name (), 1); + + return_to_top_level (RETURN_QUIT); +} + +/* Define the monitor command strings. Since these are passed directly + through to a printf style function, we may include formatting + strings. We also need a CR or LF on the end. */ + +/* need to pause the monitor for timing reasons, so slow it down */ + +static char *sparclet_inits[] = {"\n\r\r\n", NULL}; + +static struct monitor_ops sparclet_cmds ; + +static void +init_sparclet_cmds(void) +{ + sparclet_cmds.flags = MO_CLR_BREAK_USES_ADDR | + MO_HEX_PREFIX | + MO_NO_ECHO_ON_OPEN | + MO_NO_ECHO_ON_SETMEM | + MO_RUN_FIRST_TIME | + MO_GETMEM_READ_SINGLE ; /* flags */ + sparclet_cmds.init = sparclet_inits; /* Init strings */ + sparclet_cmds.cont = "cont\r"; /* continue command */ + sparclet_cmds.step = "step\r"; /* single step */ + sparclet_cmds.stop = "\r"; /* break interrupts the program */ + sparclet_cmds.set_break = "+bp %x\r"; /* set a breakpoint */ + sparclet_cmds.clr_break = "-bp %x\r" ; /* can't use "br" because only 2 hw bps are supported */ + sparclet_cmds.clr_all_break = "-bp %x\r"; /* clear a breakpoint */ + "-bp\r" ; /* clear all breakpoints */ + sparclet_cmds.fill = "fill %x -n %x -v %x -b\r"; /* fill (start length val) */ + /* can't use "fi" because it takes words, not bytes */ + /* ex [addr] [-n count] [-b|-s|-l] default: ex cur -n 1 -b */ + sparclet_cmds.setmem.cmdb = "ex %x -b\r%x\rq\r"; /* setmem.cmdb (addr, value) */ + sparclet_cmds.setmem.cmdw = "ex %x -s\r%x\rq\r"; /* setmem.cmdw (addr, value) */ + sparclet_cmds.setmem.cmdl = "ex %x -l\r%x\rq\r"; /* setmem.cmdl (addr, value) */ + sparclet_cmds.setmem.cmdll = NULL; /* setmem.cmdll (addr, value) */ + sparclet_cmds.setmem.resp_delim = NULL; /*": " */ /* setmem.resp_delim */ + sparclet_cmds.setmem.term = NULL; /*"? " */ /* setmem.term */ + sparclet_cmds.setmem.term_cmd = NULL; /*"q\r" */ /* setmem.term_cmd */ + /* since the parsing of multiple bytes is difficult due to + interspersed addresses, we'll only read 1 value at a time, + even tho these can handle a count */ + /* we can use -n to set count to read, but may have to parse? */ + sparclet_cmds.getmem.cmdb = "ex %x -n 1 -b\r"; /* getmem.cmdb (addr, #bytes) */ + sparclet_cmds.getmem.cmdw = "ex %x -n 1 -s\r"; /* getmem.cmdw (addr, #swords) */ + sparclet_cmds.getmem.cmdl = "ex %x -n 1 -l\r"; /* getmem.cmdl (addr, #words) */ + sparclet_cmds.getmem.cmdll = NULL; /* getmem.cmdll (addr, #dwords) */ + sparclet_cmds.getmem.resp_delim = ": "; /* getmem.resp_delim */ + sparclet_cmds.getmem.term = NULL; /* getmem.term */ + sparclet_cmds.getmem.term_cmd = NULL; /* getmem.term_cmd */ + sparclet_cmds.setreg.cmd = "reg %s 0x%x\r"; /* setreg.cmd (name, value) */ + sparclet_cmds.setreg.resp_delim = NULL; /* setreg.resp_delim */ + sparclet_cmds.setreg.term = NULL; /* setreg.term */ + sparclet_cmds.setreg.term_cmd = NULL ; /* setreg.term_cmd */ + sparclet_cmds.getreg.cmd = "reg %s\r"; /* getreg.cmd (name) */ + sparclet_cmds.getreg.resp_delim = " "; /* getreg.resp_delim */ + sparclet_cmds.getreg.term = NULL; /* getreg.term */ + sparclet_cmds.getreg.term_cmd = NULL; /* getreg.term_cmd */ + sparclet_cmds.dump_registers = "reg\r"; /* dump_registers */ + sparclet_cmds.register_pattern = "\\(\\w+\\)=\\([0-9a-fA-F]+\\)"; /* register_pattern */ + sparclet_cmds.supply_register = sparclet_supply_register; /* supply_register */ + sparclet_cmds.load_routine = sparclet_load; /* load_routine */ + sparclet_cmds.load = NULL; /* download command (srecs on console) */ + sparclet_cmds.loadresp = NULL; /* load response */ + sparclet_cmds.prompt = "monitor>"; /* monitor command prompt */ + /* yikes! gdb core dumps without this delimitor!! */ + sparclet_cmds.line_term = "\r"; /* end-of-command delimitor */ + sparclet_cmds.cmd_end = NULL; /* optional command terminator */ + sparclet_cmds.target = &sparclet_ops; /* target operations */ + sparclet_cmds.stopbits = SERIAL_1_STOPBITS; /* number of stop bits */ + sparclet_cmds.regnames = sparclet_regnames; /* registers names */ + sparclet_cmds.magic = MONITOR_OPS_MAGIC ; /* magic */ +}; + +static void +sparclet_open (args, from_tty) + char *args; + int from_tty; +{ + monitor_open (args, &sparclet_cmds, from_tty); +} + +void +_initialize_sparclet () +{ + int i; + init_sparclet_cmds() ; + + for (i = 0; i < NUM_REGS; i++) + if (sparclet_regnames[i][0] == 'c' || + sparclet_regnames[i][0] == 'a') + sparclet_regnames[i] = 0; /* mon can't report c* or a* regs */ + + sparclet_regnames[0] = 0; /* mon won't report %G0 */ + + init_monitor_ops (&sparclet_ops); + sparclet_ops.to_shortname = "sparclet"; /* for the target command */ + sparclet_ops.to_longname = "SPARC Sparclet monitor"; + /* use SW breaks; target only supports 2 HW breakpoints */ + sparclet_ops.to_insert_breakpoint = memory_insert_breakpoint; + sparclet_ops.to_remove_breakpoint = memory_remove_breakpoint; + + sparclet_ops.to_doc = + "Use a board running the Sparclet debug monitor.\n\ +Specify the serial device it is connected to (e.g. /dev/ttya)."; + + sparclet_ops.to_open = sparclet_open; + add_target (&sparclet_ops); +} + |