* sim-main.h (phys_to_virt): Use memory bank parameters to translate
the physical address in virtual address. (struct _sim_cpu): Add memory bank members. * m68hc11_sim.c (cpu_initialize): Clear memory bank parameters. * interp.c (sim_hw_configure): Create memory bank according to memory bank parameters. (sim_get_bank_parameters): New function to obtain memory bank config from the symbol table. (sim_prepare_for_program): Call it to obtain the memory bank parameters. (sim_open): Call sim_prepare_for_program. * dv-m68hc11.c (m68hc11cpu_io_write_buffer): Use memory bank parameters to check if address is within bank window. (m68hc11cpu_io_read_buffer): Likewise. (attach_m68hc11_regs): Map the memory bank according to memory bank parameters.
This commit is contained in:
Stephane Carrez
parent
53b3cd2254
commit
77342e5ecc
5 changed files with 137 additions and 25 deletions
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@ -1,3 +1,21 @@
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2003-08-08 Stephane Carrez <stcarrez@nerim.fr>
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* sim-main.h (phys_to_virt): Use memory bank parameters to translate
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the physical address in virtual address.
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(struct _sim_cpu): Add memory bank members.
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* m68hc11_sim.c (cpu_initialize): Clear memory bank parameters.
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* interp.c (sim_hw_configure): Create memory bank according to memory
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bank parameters.
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(sim_get_bank_parameters): New function to obtain memory bank config
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from the symbol table.
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(sim_prepare_for_program): Call it to obtain the memory bank parameters.
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(sim_open): Call sim_prepare_for_program.
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* dv-m68hc11.c (m68hc11cpu_io_write_buffer): Use memory bank parameters
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to check if address is within bank window.
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(m68hc11cpu_io_read_buffer): Likewise.
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(attach_m68hc11_regs): Map the memory bank according to memory bank
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parameters.
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2003-08-08 Stephane Carrez <stcarrez@nerim.fr>,
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* sim-main.h (PAGE_REGNUM, Z_REGNUM): Use same numbering as gdb.
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@ -1,5 +1,5 @@
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/* dv-m68hc11.c -- CPU 68HC11&68HC12 as a device.
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Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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Written by Stephane Carrez (stcarrez@nerim.fr)
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(From a driver model Contributed by Cygnus Solutions.)
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@ -324,8 +324,8 @@ attach_m68hc11_regs (struct hw *me,
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if (hw_find_property (me, "use_bank") != NULL)
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hw_attach_address (hw_parent (me), 0,
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exec_map,
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0x08000,
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0x04000,
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cpu->bank_start,
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cpu->bank_end - cpu->bank_start,
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me);
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cpu_mode = "expanded";
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@ -843,7 +843,7 @@ m68hc11cpu_io_read_buffer (struct hw *me,
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sd = hw_system (me);
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cpu = STATE_CPU (sd, 0);
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if (base >= 0x8000 && base < 0xc000)
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if (base >= cpu->bank_start && base < cpu->bank_end)
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{
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address_word virt_addr = phys_to_virt (cpu, base);
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if (virt_addr != base)
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@ -864,7 +864,7 @@ m68hc11cpu_io_read_buffer (struct hw *me,
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break;
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memcpy (dest, &cpu->ios[base], 1);
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dest++;
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dest = (char*) dest + 1;
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base++;
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byte++;
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nr_bytes--;
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@ -1091,7 +1091,7 @@ m68hc11cpu_io_write_buffer (struct hw *me,
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sd = hw_system (me);
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cpu = STATE_CPU (sd, 0);
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if (base >= 0x8000 && base < 0xc000)
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if (base >= cpu->bank_start && base < cpu->bank_end)
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{
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address_word virt_addr = phys_to_virt (cpu, base);
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if (virt_addr != base)
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@ -1113,7 +1113,7 @@ m68hc11cpu_io_write_buffer (struct hw *me,
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val = *((uint8*) source);
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m68hc11cpu_io_write (me, cpu, base, val);
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source++;
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source = (char*) source + 1;
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base++;
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byte++;
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nr_bytes--;
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@ -1,5 +1,5 @@
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/* interp.c -- Simulator for Motorola 68HC11/68HC12
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Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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Copyright (C) 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
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Written by Stephane Carrez (stcarrez@nerim.fr)
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This file is part of GDB, the GNU debugger.
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@ -25,6 +25,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
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#include "hw-tree.h"
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#include "hw-device.h"
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#include "hw-ports.h"
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#include "elf32-m68hc1x.h"
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#ifndef MONITOR_BASE
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# define MONITOR_BASE (0x0C000)
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@ -194,8 +195,17 @@ sim_hw_configure (SIM_DESC sd)
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sim_do_commandf (sd, "memory region 0x000@%d,0x8000",
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M6811_RAM_LEVEL);
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sim_hw_parse (sd, "/m68hc11/reg 0x1000 0x03F");
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if (cpu->bank_start < cpu->bank_end)
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{
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sim_do_commandf (sd, "memory region 0x%lx@%d,0x100000",
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cpu->bank_virtual, M6811_RAM_LEVEL);
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sim_hw_parse (sd, "/m68hc11/use_bank 1");
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}
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}
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if (cpu->cpu_start_mode)
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{
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sim_hw_parse (sd, "/m68hc11/mode %s", cpu->cpu_start_mode);
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}
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if (hw_tree_find_property (device_tree, "/m68hc11/m68hc11sio/reg") == 0)
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{
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sim_hw_parse (sd, "/m68hc11/m68hc11sio/reg 0x2b 0x5");
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@ -242,14 +252,16 @@ sim_hw_configure (SIM_DESC sd)
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{
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/* Allocate core external memory. */
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sim_do_commandf (sd, "memory region 0x%lx@%d,0x%lx",
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0xC000, M6811_RAM_LEVEL, 0x4000);
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0x8000, M6811_RAM_LEVEL, 0x8000);
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sim_do_commandf (sd, "memory region 0x000@%d,0x8000",
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M6811_RAM_LEVEL);
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sim_do_commandf (sd, "memory region 0x01000000@%d,0x100000",
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M6811_RAM_LEVEL);
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if (cpu->bank_start < cpu->bank_end)
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{
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sim_do_commandf (sd, "memory region 0x%lx@%d,0x100000",
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cpu->bank_virtual, M6811_RAM_LEVEL);
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sim_hw_parse (sd, "/m68hc12/use_bank 1");
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}
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sim_hw_parse (sd, "/m68hc12/reg 0x0 0x3FF");
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sim_hw_parse (sd, "/m68hc12/use_bank 1");
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}
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if (!hw_tree_find_property (device_tree, "/m68hc12/m68hc12sio@1/reg"))
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@ -294,19 +306,77 @@ sim_hw_configure (SIM_DESC sd)
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return 1;
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}
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/* Get the memory bank parameters by looking at the global symbols
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defined by the linker. */
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static int
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sim_prepare_for_program (SIM_DESC sd, struct bfd* abfd)
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sim_get_bank_parameters (SIM_DESC sd, bfd* abfd)
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{
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sim_cpu *cpu;
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long symsize;
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long symbol_count, i;
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unsigned size;
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asymbol** asymbols;
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asymbol** current;
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cpu = STATE_CPU (sd, 0);
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if (!sim_hw_configure (sd))
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return SIM_RC_FAIL;
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symsize = bfd_get_symtab_upper_bound (abfd);
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if (symsize < 0)
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{
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sim_io_eprintf (sd, "Cannot read symbols of program");
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return 0;
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}
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asymbols = (asymbol **) xmalloc (symsize);
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symbol_count = bfd_canonicalize_symtab (abfd, asymbols);
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if (symbol_count < 0)
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{
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sim_io_eprintf (sd, "Cannot read symbols of program");
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return 0;
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}
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size = 0;
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for (i = 0, current = asymbols; i < symbol_count; i++, current++)
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{
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const char* name = bfd_asymbol_name (*current);
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if (strcmp (name, BFD_M68HC11_BANK_START_NAME) == 0)
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{
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cpu->bank_start = bfd_asymbol_value (*current);
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}
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else if (strcmp (name, BFD_M68HC11_BANK_SIZE_NAME) == 0)
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{
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size = bfd_asymbol_value (*current);
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}
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else if (strcmp (name, BFD_M68HC11_BANK_VIRTUAL_NAME) == 0)
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{
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cpu->bank_virtual = bfd_asymbol_value (*current);
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}
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}
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free (asymbols);
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cpu->bank_end = cpu->bank_start + size;
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cpu->bank_shift = 0;
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for (; size > 1; size >>= 1)
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cpu->bank_shift++;
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return 0;
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}
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static int
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sim_prepare_for_program (SIM_DESC sd, bfd* abfd)
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{
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sim_cpu *cpu;
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int elf_flags = 0;
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cpu = STATE_CPU (sd, 0);
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if (abfd != NULL)
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{
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asection *s;
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if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
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elf_flags = elf_elfheader (abfd)->e_flags;
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cpu->cpu_elf_start = bfd_get_start_address (abfd);
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/* See if any section sets the reset address */
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cpu->cpu_use_elf_start = 1;
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@ -331,8 +401,17 @@ sim_prepare_for_program (SIM_DESC sd, struct bfd* abfd)
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}
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}
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}
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if (elf_flags & E_M68HC12_BANKS)
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{
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if (sim_get_bank_parameters (sd, abfd) != 0)
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sim_io_eprintf (sd, "Memory bank parameters are not initialized\n");
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}
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}
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if (!sim_hw_configure (sd))
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return SIM_RC_FAIL;
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/* reset all state information */
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sim_board_reset (sd);
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@ -341,7 +420,7 @@ sim_prepare_for_program (SIM_DESC sd, struct bfd* abfd)
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SIM_DESC
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sim_open (SIM_OPEN_KIND kind, host_callback *callback,
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struct bfd *abfd, char **argv)
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bfd *abfd, char **argv)
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{
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SIM_DESC sd;
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sim_cpu *cpu;
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@ -398,8 +477,11 @@ sim_open (SIM_OPEN_KIND kind, host_callback *callback,
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free_state (sd);
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return 0;
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}
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sim_hw_configure (sd);
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if (sim_prepare_for_program (sd, abfd) != SIM_RC_OK)
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{
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free_state (sd);
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return 0;
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}
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/* Fudge our descriptor. */
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return sd;
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@ -464,6 +464,9 @@ cpu_initialize (SIM_DESC sd, sim_cpu *cpu)
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cpu->cpu_use_elf_start = 0;
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cpu->cpu_elf_start = 0;
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cpu->cpu_use_local_config = 0;
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cpu->bank_start = 0;
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cpu->bank_end = 0;
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cpu->bank_shift = 0;
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cpu->cpu_config = M6811_NOSEC | M6811_NOCOP | M6811_ROMON |
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M6811_EEON;
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interrupts_initialize (sd, cpu);
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@ -210,6 +210,14 @@ struct _sim_cpu {
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uint8 ios[MAX_PORTS];
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/* Memory bank parameters which describe how the memory bank window
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is mapped in memory and how to convert it in virtual address. */
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uint16 bank_start;
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uint16 bank_end;
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address_word bank_virtual;
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unsigned bank_shift;
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struct hw *hw_cpu;
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/* ... base type ... */
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@ -237,7 +245,7 @@ struct _sim_cpu {
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#define cpu_get_sp(PROC) ((PROC)->cpu_regs.sp)
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#define cpu_get_a(PROC) ((PROC->cpu_regs.d >> 8) & 0x0FF)
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#define cpu_get_b(PROC) ((PROC->cpu_regs.d) & 0x0FF)
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#define cpu_get_page(PROC) (PROC->cpu_regs.page)
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#define cpu_get_page(PROC) ((PROC)->cpu_regs.page)
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/* 68HC12 specific and Motorola internal registers. */
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#define cpu_get_tmp3(PROC) (0)
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@ -246,7 +254,7 @@ struct _sim_cpu {
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#define cpu_set_d(PROC,VAL) (((PROC)->cpu_regs.d) = (VAL))
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#define cpu_set_x(PROC,VAL) (((PROC)->cpu_regs.ix) = (VAL))
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#define cpu_set_y(PROC,VAL) (((PROC)->cpu_regs.iy) = (VAL))
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#define cpu_set_page(PROC,VAL) ((PROC->cpu_regs.page) = (VAL))
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#define cpu_set_page(PROC,VAL) (((PROC)->cpu_regs.page) = (VAL))
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/* 68HC12 specific and Motorola internal registers. */
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#define cpu_set_tmp3(PROC,VAL) (0)
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@ -297,9 +305,10 @@ extern void cpu_memory_exception (struct _sim_cpu *proc,
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inline address_word
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phys_to_virt (sim_cpu *cpu, address_word addr)
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{
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if (addr >= 0x8000 && addr < 0xc000)
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return ((address_word) (addr) - 0x8000)
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+ (((address_word) cpu->cpu_regs.page) << 14) + 0x01000000;
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if (addr >= cpu->bank_start && addr < cpu->bank_end)
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return ((address_word) (addr - cpu->bank_start)
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+ (((address_word) cpu->cpu_regs.page) << cpu->bank_shift)
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+ cpu->bank_virtual);
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else
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return (address_word) (addr);
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}
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