/* Simulator for Xilinx MicroBlaze processor
- Copyright 2009-2012 Free Software Foundation, Inc.
+ Copyright 2009-2020 Free Software Foundation, Inc.
This file is part of GDB, the GNU debugger.
#include "config.h"
#include <signal.h>
-#include "sysdep.h"
-#include <sys/times.h>
-#include <sys/param.h>
-#include <netinet/in.h> /* for byte ordering macros */
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
#include "bfd.h"
#include "gdb/callback.h"
#include "libiberty.h"
#include "gdb/remote-sim.h"
-#include "sim-main.h"
-#include "sim-utils.h"
-#include "microblaze-dis.h"
+#include "sim-main.h"
+#include "sim-options.h"
-#ifndef NUM_ELEM
-#define NUM_ELEM(A) (sizeof (A) / sizeof (A)[0])
-#endif
+#include "microblaze-dis.h"
-static int target_big_endian = 1;
-static unsigned long heap_ptr = 0;
-static unsigned long stack_ptr = 0;
-host_callback *callback;
+#define target_big_endian (CURRENT_TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
-unsigned long
+static unsigned long
microblaze_extract_unsigned_integer (unsigned char *addr, int len)
{
unsigned long retval;
if (len > (int) sizeof (unsigned long))
printf ("That operation is not available on integers of more than "
- "%d bytes.", sizeof (unsigned long));
+ "%zu bytes.", sizeof (unsigned long));
/* Start at the most significant end of the integer, and work towards
the least significant. */
return retval;
}
-void
+static void
microblaze_store_unsigned_integer (unsigned char *addr, int len,
unsigned long val)
{
}
}
-struct sim_state microblaze_state;
-
-int memcycles = 1;
-
-static SIM_OPEN_KIND sim_kind;
-static char *myname;
-
-static int issue_messages = 0;
-
-long
-int_sbrk (int inc_bytes)
-{
- long addr;
-
- addr = heap_ptr;
-
- heap_ptr += inc_bytes;
-
- if (issue_messages && heap_ptr > SP)
- fprintf (stderr, "Warning: heap_ptr overlaps stack!\n");
-
- return addr;
-}
-
-static void /* INLINE */
-wbat (word x, word v)
-{
- if (((uword)x) >= CPU.msize)
- {
- if (issue_messages)
- fprintf (stderr, "byte write to 0x%x outside memory range\n", x);
-
- CPU.exception = SIGSEGV;
- }
- else
- {
- unsigned char *p = CPU.memory + x;
- p[0] = v;
- }
-}
-
-static void /* INLINE */
-wlat (word x, word v)
-{
- if (((uword)x) >= CPU.msize)
- {
- if (issue_messages)
- fprintf (stderr, "word write to 0x%x outside memory range\n", x);
-
- CPU.exception = SIGSEGV;
- }
- else
- {
- if ((x & 3) != 0)
- {
- if (issue_messages)
- fprintf (stderr, "word write to unaligned memory address: 0x%x\n", x);
-
- CPU.exception = SIGBUS;
- }
- else if (!target_big_endian)
- {
- unsigned char *p = CPU.memory + x;
- p[3] = v >> 24;
- p[2] = v >> 16;
- p[1] = v >> 8;
- p[0] = v;
- }
- else
- {
- unsigned char *p = CPU.memory + x;
- p[0] = v >> 24;
- p[1] = v >> 16;
- p[2] = v >> 8;
- p[3] = v;
- }
- }
-}
-
-static void /* INLINE */
-what (word x, word v)
-{
- if (((uword)x) >= CPU.msize)
- {
- if (issue_messages)
- fprintf (stderr, "short write to 0x%x outside memory range\n", x);
-
- CPU.exception = SIGSEGV;
- }
- else
- {
- if ((x & 1) != 0)
- {
- if (issue_messages)
- fprintf (stderr, "short write to unaligned memory address: 0x%x\n",
- x);
-
- CPU.exception = SIGBUS;
- }
- else if (!target_big_endian)
- {
- unsigned char *p = CPU.memory + x;
- p[1] = v >> 8;
- p[0] = v;
- }
- else
- {
- unsigned char *p = CPU.memory + x;
- p[0] = v >> 8;
- p[1] = v;
- }
- }
-}
-
-/* Read functions. */
-static int /* INLINE */
-rbat (word x)
-{
- if (((uword)x) >= CPU.msize)
- {
- if (issue_messages)
- fprintf (stderr, "byte read from 0x%x outside memory range\n", x);
-
- CPU.exception = SIGSEGV;
- return 0;
- }
- else
- {
- unsigned char *p = CPU.memory + x;
- return p[0];
- }
-}
-
-static int /* INLINE */
-rlat (word x)
-{
- if (((uword) x) >= CPU.msize)
- {
- if (issue_messages)
- fprintf (stderr, "word read from 0x%x outside memory range\n", x);
-
- CPU.exception = SIGSEGV;
- return 0;
- }
- else
- {
- if ((x & 3) != 0)
- {
- if (issue_messages)
- fprintf (stderr, "word read from unaligned address: 0x%x\n", x);
-
- CPU.exception = SIGBUS;
- return 0;
- }
- else if (! target_big_endian)
- {
- unsigned char *p = CPU.memory + x;
- return (p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0];
- }
- else
- {
- unsigned char *p = CPU.memory + x;
- return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
- }
- }
-}
-
-static int /* INLINE */
-rhat (word x)
-{
- if (((uword)x) >= CPU.msize)
- {
- if (issue_messages)
- fprintf (stderr, "short read from 0x%x outside memory range\n", x);
-
- CPU.exception = SIGSEGV;
- return 0;
- }
- else
- {
- if ((x & 1) != 0)
- {
- if (issue_messages)
- fprintf (stderr, "short read from unaligned address: 0x%x\n", x);
-
- CPU.exception = SIGBUS;
- return 0;
- }
- else if (!target_big_endian)
- {
- unsigned char *p = CPU.memory + x;
- return (p[1] << 8) | p[0];
- }
- else
- {
- unsigned char *p = CPU.memory + x;
- return (p[0] << 8) | p[1];
- }
- }
-}
-
-
-#define SEXTB(x) (((x & 0xff) ^ (~ 0x7f)) + 0x80)
-#define SEXTW(y) ((int)((short)y))
-
-static int
-IOMEM (int addr, int write, int value)
-{
-}
-
-/* Default to a 8 Mbyte (== 2^23) memory space. */
-static int sim_memory_size = 1 << 23;
-
-#define MEM_SIZE_FLOOR 64
-void
-sim_size (int size)
-{
- sim_memory_size = size;
- CPU.msize = sim_memory_size;
-
- if (CPU.memory)
- free (CPU.memory);
-
- CPU.memory = (unsigned char *) calloc (1, CPU.msize);
-
- if (!CPU.memory)
- {
- if (issue_messages)
- fprintf (stderr,
- "Not enough VM for simulation of %d bytes of RAM\n",
- CPU.msize);
-
- CPU.msize = 1;
- CPU.memory = (unsigned char *) calloc (1, 1);
- }
-}
-
-static void
-init_pointers ()
-{
- if (CPU.msize != (sim_memory_size))
- sim_size (sim_memory_size);
-}
-
static void
-set_initial_gprs ()
+set_initial_gprs (SIM_CPU *cpu)
{
int i;
long space;
- unsigned long memsize;
-
- init_pointers ();
/* Set up machine just out of reset. */
PC = 0;
MSR = 0;
- memsize = CPU.msize / (1024 * 1024);
-
- if (issue_messages > 1)
- fprintf (stderr, "Simulated memory of %d Mbytes (0x0 .. 0x%08x)\n",
- memsize, CPU.msize - 1);
-
/* Clean out the GPRs */
for (i = 0; i < 32; i++)
CPU.regs[i] = 0;
CPU.insts = 0;
CPU.cycles = 0;
CPU.imm_enable = 0;
-
-}
-
-static void
-interrupt ()
-{
- CPU.exception = SIGINT;
-}
-
-/* Functions so that trapped open/close don't interfere with the
- parent's functions. We say that we can't close the descriptors
- that we didn't open. exit() and cleanup() get in trouble here,
- to some extent. That's the price of emulation. */
-
-unsigned char opened[100];
-
-static void
-log_open (int fd)
-{
- if (fd < 0 || fd > NUM_ELEM (opened))
- return;
-
- opened[fd] = 1;
-}
-
-static void
-log_close (int fd)
-{
- if (fd < 0 || fd > NUM_ELEM (opened))
- return;
-
- opened[fd] = 0;
-}
-
-static int
-is_opened (int fd)
-{
- if (fd < 0 || fd > NUM_ELEM (opened))
- return 0;
-
- return opened[fd];
-}
-
-static void
-handle_trap1 ()
-{
}
-static void
-process_stub (int what)
-{
- /* These values should match those in libgloss/microblaze/syscalls.s. */
- switch (what)
- {
- case 3: /* _read */
- case 4: /* _write */
- case 5: /* _open */
- case 6: /* _close */
- case 10: /* _unlink */
- case 19: /* _lseek */
- case 43: /* _times */
- handle_trap1 ();
- break;
-
- default:
- if (issue_messages)
- fprintf (stderr, "Unhandled stub opcode: %d\n", what);
- break;
- }
-}
-
-static void
-util (unsigned what)
-{
- switch (what)
- {
- case 0: /* exit */
- CPU.exception = SIGQUIT;
- break;
-
- case 1: /* printf */
- {
- unsigned long a[6];
- unsigned char *s;
- int i;
-
- for (s = (unsigned char *)a[0], i = 1 ; *s && i < 6 ; s++)
- if (*s == '%')
- i++;
- }
- break;
-
- case 2: /* scanf */
- if (issue_messages)
- fprintf (stderr, "WARNING: scanf unimplemented\n");
- break;
-
- case 3: /* utime */
- break;
-
- case 0xFF:
- process_stub (CPU.regs[1]);
- break;
-
- default:
- if (issue_messages)
- fprintf (stderr, "Unhandled util code: %x\n", what);
- break;
- }
-}
-
-/* For figuring out whether we carried; addc/subc use this. */
-static int
-iu_carry (unsigned long a, unsigned long b, int cin)
-{
- unsigned long x;
-
- x = (a & 0xffff) + (b & 0xffff) + cin;
- x = (x >> 16) + (a >> 16) + (b >> 16);
- x >>= 16;
-
- return (x != 0);
-}
-
-#define WATCHFUNCTIONS 1
-#ifdef WATCHFUNCTIONS
-
-#define MAXWL 80
-word WL[MAXWL];
-char *WLstr[MAXWL];
-
-int ENDWL=0;
-int WLincyc;
-int WLcyc[MAXWL];
-int WLcnts[MAXWL];
-int WLmax[MAXWL];
-int WLmin[MAXWL];
-word WLendpc;
-int WLbcyc;
-int WLW;
-#endif
-
static int tracing = 0;
void
-sim_resume (SIM_DESC sd, int step, int siggnal)
+sim_engine_run (SIM_DESC sd,
+ int next_cpu_nr, /* ignore */
+ int nr_cpus, /* ignore */
+ int siggnal) /* ignore */
{
+ SIM_CPU *cpu = STATE_CPU (sd, 0);
int needfetch;
word inst;
enum microblaze_instr op;
- void (*sigsave)();
int memops;
int bonus_cycles;
int insts;
short num_delay_slot; /* UNUSED except as reqd parameter */
enum microblaze_instr_type insn_type;
- sigsave = signal (SIGINT, interrupt);
- CPU.exception = step ? SIGTRAP : 0;
-
memops = 0;
bonus_cycles = 0;
insts = 0;
-
- do
+
+ while (1)
{
/* Fetch the initial instructions that we'll decode. */
- inst = rlat (PC & 0xFFFFFFFC);
+ inst = MEM_RD_WORD (PC & 0xFFFFFFFC);
- op = get_insn_microblaze (inst, &imm_unsigned, &insn_type,
+ op = get_insn_microblaze (inst, &imm_unsigned, &insn_type,
&num_delay_slot);
if (op == invalid_inst)
delay_slot_enable = 0;
branch_taken = 0;
if (op == microblaze_brk)
- CPU.exception = SIGTRAP;
+ sim_engine_halt (sd, NULL, NULL, NULL_CIA, sim_stopped, SIM_SIGTRAP);
else if (inst == MICROBLAZE_HALT_INST)
{
- CPU.exception = SIGQUIT;
insts += 1;
bonus_cycles++;
+ sim_engine_halt (sd, NULL, NULL, NULL_CIA, sim_exited, RETREG);
}
else
{
#undef INSTRUCTION
default:
- CPU.exception = SIGILL;
+ sim_engine_halt (sd, NULL, NULL, NULL_CIA, sim_signalled,
+ SIM_SIGILL);
fprintf (stderr, "ERROR: Unknown opcode\n");
}
/* Make R0 consistent */
bonus_cycles += 33;
if ((insn_type == branch_inst || insn_type == return_inst)
- && branch_taken)
+ && branch_taken)
{
/* Add an extra cycle for taken branches */
bonus_cycles++;
/* For branch instructions handle the instruction in the delay slot */
- if (delay_slot_enable)
+ if (delay_slot_enable)
{
newpc = PC;
PC = oldpc + INST_SIZE;
- inst = rlat (PC & 0xFFFFFFFC);
+ inst = MEM_RD_WORD (PC & 0xFFFFFFFC);
op = get_insn_microblaze (inst, &imm_unsigned, &insn_type,
&num_delay_slot);
if (op == invalid_inst)
/* immword = IMM_W; */
if (op == microblaze_brk)
{
- if (issue_messages)
+ if (STATE_VERBOSE_P (sd))
fprintf (stderr, "Breakpoint set in delay slot "
"(at address 0x%x) will not be honored\n", PC);
/* ignore the breakpoint */
}
else if (insn_type == branch_inst || insn_type == return_inst)
{
- if (issue_messages)
+ if (STATE_VERBOSE_P (sd))
fprintf (stderr, "Cannot have branch or return instructions "
"in delay slot (at address 0x%x)\n", PC);
- CPU.exception = SIGILL;
+ sim_engine_halt (sd, NULL, NULL, NULL_CIA, sim_signalled,
+ SIM_SIGILL);
}
else
{
#undef INSTRUCTION
default:
- CPU.exception = SIGILL;
+ sim_engine_halt (sd, NULL, NULL, NULL_CIA,
+ sim_signalled, SIM_SIGILL);
fprintf (stderr, "ERROR: Unknown opcode at 0x%x\n", PC);
}
/* Update cycle counts */
insts++;
if (insn_type == memory_store_inst
- || insn_type == memory_load_inst)
+ || insn_type == memory_load_inst)
memops++;
if (insn_type == mult_inst)
bonus_cycles++;
if (tracing)
fprintf (stderr, "\n");
+
+ if (sim_events_tick (sd))
+ sim_events_process (sd);
}
- while (!CPU.exception);
/* Hide away the things we've cached while executing. */
/* CPU.pc = pc; */
CPU.cycles += insts; /* and each takes a cycle */
CPU.cycles += bonus_cycles; /* and extra cycles for branches */
CPU.cycles += memops; /* and memop cycle delays */
-
- signal (SIGINT, sigsave);
-}
-
-
-int
-sim_write (SIM_DESC sd, SIM_ADDR addr, const unsigned char *buffer, int size)
-{
- int i;
- init_pointers ();
-
- memcpy (&CPU.memory[addr], buffer, size);
-
- return size;
-}
-
-int
-sim_read (SIM_DESC sd, SIM_ADDR addr, unsigned char *buffer, int size)
-{
- int i;
- init_pointers ();
-
- memcpy (buffer, &CPU.memory[addr], size);
-
- return size;
}
-
-int
-sim_store_register (SIM_DESC sd, int rn, unsigned char *memory, int length)
+static int
+microblaze_reg_store (SIM_CPU *cpu, int rn, unsigned char *memory, int length)
{
- init_pointers ();
-
if (rn < NUM_REGS + NUM_SPECIAL && rn >= 0)
{
if (length == 4)
return 0;
}
-int
-sim_fetch_register (SIM_DESC sd, int rn, unsigned char *memory, int length)
+static int
+microblaze_reg_fetch (SIM_CPU *cpu, int rn, unsigned char *memory, int length)
{
long ival;
- init_pointers ();
if (rn < NUM_REGS + NUM_SPECIAL && rn >= 0)
{
return 0;
}
-
-int
-sim_trace (SIM_DESC sd)
-{
- tracing = 1;
-
- sim_resume (sd, 0, 0);
-
- tracing = 0;
-
- return 1;
-}
-
-void
-sim_stop_reason (SIM_DESC sd, enum sim_stop *reason, int *sigrc)
-{
- if (CPU.exception == SIGQUIT)
- {
- *reason = sim_exited;
- *sigrc = RETREG;
- }
- else
- {
- *reason = sim_stopped;
- *sigrc = CPU.exception;
- }
-}
-
-
-int
-sim_stop (SIM_DESC sd)
-{
- CPU.exception = SIGINT;
- return 1;
-}
-
-
void
sim_info (SIM_DESC sd, int verbose)
{
-#ifdef WATCHFUNCTIONS
- int w, wcyc;
-#endif
+ SIM_CPU *cpu = STATE_CPU (sd, 0);
+ host_callback *callback = STATE_CALLBACK (sd);
callback->printf_filtered (callback, "\n\n# instructions executed %10d\n",
CPU.insts);
callback->printf_filtered (callback, "# cycles %10d\n",
(CPU.cycles) ? CPU.cycles+2 : 0);
-
-#ifdef WATCHFUNCTIONS
- callback->printf_filtered (callback, "\nNumber of watched functions: %d\n",
- ENDWL);
-
- wcyc = 0;
-
- for (w = 1; w <= ENDWL; w++)
- {
- callback->printf_filtered (callback, "WL = %s %8x\n",WLstr[w],WL[w]);
- callback->printf_filtered (callback, " calls = %d, cycles = %d\n",
- WLcnts[w],WLcyc[w]);
-
- if (WLcnts[w] != 0)
- callback->printf_filtered (callback,
- " maxcpc = %d, mincpc = %d, avecpc = %d\n",
- WLmax[w],WLmin[w],WLcyc[w]/WLcnts[w]);
- wcyc += WLcyc[w];
- }
-
- callback->printf_filtered (callback,
- "Total cycles for watched functions: %d\n",wcyc);
-#endif
}
-struct aout
+static sim_cia
+microblaze_pc_get (sim_cpu *cpu)
{
- unsigned char sa_machtype[2];
- unsigned char sa_magic[2];
- unsigned char sa_tsize[4];
- unsigned char sa_dsize[4];
- unsigned char sa_bsize[4];
- unsigned char sa_syms[4];
- unsigned char sa_entry[4];
- unsigned char sa_trelo[4];
- unsigned char sa_drelo[4];
-} aout;
-
-#define LONG(x) (((x)[0]<<24)|((x)[1]<<16)|((x)[2]<<8)|(x)[3])
-#define SHORT(x) (((x)[0]<<8)|(x)[1])
+ return cpu->microblaze_cpu.spregs[0];
+}
-SIM_DESC
-sim_open (SIM_OPEN_KIND kind, host_callback *cb, struct bfd *abfd, char **argv)
+static void
+microblaze_pc_set (sim_cpu *cpu, sim_cia pc)
{
- /* SIM_DESC sd = sim_state_alloc(kind, alloc);*/
-
- int osize = sim_memory_size;
- myname = argv[0];
- callback = cb;
-
- if (kind == SIM_OPEN_STANDALONE)
- issue_messages = 1;
-
- /* Discard and reacquire memory -- start with a clean slate. */
- sim_size (1); /* small */
- sim_size (osize); /* and back again */
-
- set_initial_gprs (); /* Reset the GPR registers. */
-
- return ((SIM_DESC) 1);
+ cpu->microblaze_cpu.spregs[0] = pc;
}
-void
-sim_close (SIM_DESC sd, int quitting)
+static void
+free_state (SIM_DESC sd)
{
- if (CPU.memory)
- {
- free(CPU.memory);
- CPU.memory = NULL;
- CPU.msize = 0;
- }
+ if (STATE_MODULES (sd) != NULL)
+ sim_module_uninstall (sd);
+ sim_cpu_free_all (sd);
+ sim_state_free (sd);
}
-SIM_RC
-sim_load (SIM_DESC sd, char *prog, bfd *abfd, int from_tty)
+SIM_DESC
+sim_open (SIM_OPEN_KIND kind, host_callback *cb,
+ struct bfd *abfd, char * const *argv)
{
- /* Do the right thing for ELF executables; this turns out to be
- just about the right thing for any object format that:
- - we crack using BFD routines
- - follows the traditional UNIX text/data/bss layout
- - calls the bss section ".bss". */
-
- extern bfd *sim_load_file (); /* ??? Don't know where this should live. */
- bfd *prog_bfd;
-
- {
- bfd *handle;
- asection *s;
- int found_loadable_section = 0;
- bfd_vma max_addr = 0;
- handle = bfd_openr (prog, 0);
+ int i;
+ SIM_DESC sd = sim_state_alloc (kind, cb);
+ SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
- if (!handle)
- {
- printf("``%s'' could not be opened.\n", prog);
- return SIM_RC_FAIL;
- }
+ /* The cpu data is kept in a separately allocated chunk of memory. */
+ if (sim_cpu_alloc_all (sd, 1, /*cgen_cpu_max_extra_bytes ()*/0) != SIM_RC_OK)
+ {
+ free_state (sd);
+ return 0;
+ }
- /* Makes sure that we have an object file, also cleans gets the
- section headers in place. */
- if (!bfd_check_format (handle, bfd_object))
- {
- /* wasn't an object file */
- bfd_close (handle);
- printf ("``%s'' is not appropriate object file.\n", prog);
- return SIM_RC_FAIL;
- }
+ if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
+ {
+ free_state (sd);
+ return 0;
+ }
- for (s = handle->sections; s; s = s->next)
- {
- if (s->flags & SEC_ALLOC)
- {
- bfd_vma vma = 0;
- int size = bfd_get_section_size (s);
- if (size > 0)
- {
- vma = bfd_section_vma (handle, s);
- if (vma >= max_addr)
- {
- max_addr = vma + size;
- }
- }
- if (s->flags & SEC_LOAD)
- found_loadable_section = 1;
- }
- }
+ /* The parser will print an error message for us, so we silently return. */
+ if (sim_parse_args (sd, argv) != SIM_RC_OK)
+ {
+ free_state (sd);
+ return 0;
+ }
- if (!found_loadable_section)
- {
- /* No loadable sections */
- bfd_close(handle);
- printf("No loadable sections in file %s\n", prog);
- return SIM_RC_FAIL;
- }
+ /* Check for/establish the a reference program image. */
+ if (sim_analyze_program (sd,
+ (STATE_PROG_ARGV (sd) != NULL
+ ? *STATE_PROG_ARGV (sd)
+ : NULL), abfd) != SIM_RC_OK)
+ {
+ free_state (sd);
+ return 0;
+ }
- sim_memory_size = (unsigned long) max_addr;
+ /* Configure/verify the target byte order and other runtime
+ configuration options. */
+ if (sim_config (sd) != SIM_RC_OK)
+ {
+ sim_module_uninstall (sd);
+ return 0;
+ }
- /* Clean up after ourselves. */
- bfd_close (handle);
+ if (sim_post_argv_init (sd) != SIM_RC_OK)
+ {
+ /* Uninstall the modules to avoid memory leaks,
+ file descriptor leaks, etc. */
+ sim_module_uninstall (sd);
+ return 0;
+ }
- }
+ /* CPU specific initialization. */
+ for (i = 0; i < MAX_NR_PROCESSORS; ++i)
+ {
+ SIM_CPU *cpu = STATE_CPU (sd, i);
- /* from sh -- dac */
- prog_bfd = sim_load_file (sd, myname, callback, prog, abfd,
- /* sim_kind == SIM_OPEN_DEBUG, */
- 1,
- 0, sim_write);
- if (prog_bfd == NULL)
- return SIM_RC_FAIL;
+ CPU_REG_FETCH (cpu) = microblaze_reg_fetch;
+ CPU_REG_STORE (cpu) = microblaze_reg_store;
+ CPU_PC_FETCH (cpu) = microblaze_pc_get;
+ CPU_PC_STORE (cpu) = microblaze_pc_set;
- target_big_endian = bfd_big_endian (prog_bfd);
- PC = bfd_get_start_address (prog_bfd);
+ set_initial_gprs (cpu);
+ }
- if (abfd == NULL)
- bfd_close (prog_bfd);
+ /* Default to a 8 Mbyte (== 2^23) memory space. */
+ sim_do_commandf (sd, "memory-size 0x800000");
- return SIM_RC_OK;
+ return sd;
}
SIM_RC
-sim_create_inferior (SIM_DESC sd, struct bfd *prog_bfd, char **argv, char **env)
+sim_create_inferior (SIM_DESC sd, struct bfd *prog_bfd,
+ char * const *argv, char * const *env)
{
- char **avp;
- int nargs = 0;
- int nenv = 0;
- int s_length;
- int l;
- unsigned long strings;
- unsigned long pointers;
- unsigned long hi_stack;
-
+ SIM_CPU *cpu = STATE_CPU (sd, 0);
- /* Set the initial register set. */
- l = issue_messages;
- issue_messages = 0;
- set_initial_gprs ();
- issue_messages = l;
-
- hi_stack = CPU.msize - 4;
PC = bfd_get_start_address (prog_bfd);
- /* For now ignore all parameters to the program */
-
return SIM_RC_OK;
}
-
-void
-sim_kill (SIM_DESC sd)
-{
- /* nothing to do */
-}
-
-void
-sim_do_command (SIM_DESC sd, char * cmd)
-{
- /* Nothing there yet; it's all an error. */
-
- if (cmd != NULL)
- {
- char ** simargv = buildargv (cmd);
-
- if (strcmp (simargv[0], "watch") == 0)
- {
- if ((simargv[1] == NULL) || (simargv[2] == NULL))
- {
- fprintf (stderr, "Error: missing argument to watch cmd.\n");
- return;
- }
-
- ENDWL++;
-
- WL[ENDWL] = strtol (simargv[2], NULL, 0);
- WLstr[ENDWL] = strdup (simargv[1]);
- fprintf (stderr, "Added %s (%x) to watchlist, #%d\n",WLstr[ENDWL],
- WL[ENDWL], ENDWL);
-
- }
- else if (strcmp (simargv[0], "dumpmem") == 0)
- {
- unsigned char * p;
- FILE * dumpfile;
-
- if (simargv[1] == NULL)
- fprintf (stderr, "Error: missing argument to dumpmem cmd.\n");
-
- fprintf (stderr, "Writing dumpfile %s...",simargv[1]);
-
- dumpfile = fopen (simargv[1], "w");
- p = CPU.memory;
- fwrite (p, CPU.msize-1, 1, dumpfile);
- fclose (dumpfile);
-
- fprintf (stderr, "done.\n");
- }
- else if (strcmp (simargv[0], "clearstats") == 0)
- {
- CPU.cycles = 0;
- CPU.insts = 0;
- ENDWL = 0;
- }
- else if (strcmp (simargv[0], "verbose") == 0)
- {
- issue_messages = 2;
- }
- else
- {
- fprintf (stderr,"Error: \"%s\" is not a valid M.CORE simulator command.\n",
- cmd);
- }
- }
- else
- {
- fprintf (stderr, "M.CORE sim commands: \n");
- fprintf (stderr, " watch <funcname> <addr>\n");
- fprintf (stderr, " dumpmem <filename>\n");
- fprintf (stderr, " clearstats\n");
- fprintf (stderr, " verbose\n");
- }
-}
-
-void
-sim_set_callbacks (host_callback *ptr)
-{
- callback = ptr;
-}
-
-char **
-sim_complete_command (SIM_DESC sd, char *text, char *word)
-{
- return NULL;
-}
projects / deliverable / binutils-gdb.git / blobdiff