/* run front end support for arm
- Copyright (C) 1995-2013 Free Software Foundation, Inc.
+ Copyright (C) 1995-2020 Free Software Foundation, Inc.
This file is part of ARM SIM.
#include <signal.h>
#include "gdb/callback.h"
#include "gdb/remote-sim.h"
-#include "armdefs.h"
+#include "sim-main.h"
+#include "sim-options.h"
#include "armemu.h"
#include "dbg_rdi.h"
#include "ansidecl.h"
-#include "sim-utils.h"
-#include "run-sim.h"
#include "gdb/sim-arm.h"
#include "gdb/signals.h"
#include "libiberty.h"
+#include "iwmmxt.h"
+#include "maverick.h"
+/* TODO: This should get pulled from the SIM_DESC. */
host_callback *sim_callback;
-static struct ARMul_State *state;
-
-/* Who is using the simulator. */
-static SIM_OPEN_KIND sim_kind;
-
-/* argv[0] */
-static char *myname;
+/* TODO: This should get merged into sim_cpu. */
+struct ARMul_State *state;
/* Memory size in bytes. */
+/* TODO: Memory should be converted to the common memory module. */
static int mem_size = (1 << 21);
-/* Non-zero to display start up banner, and maybe other things. */
-static int verbosity;
-
-/* Non-zero to set big endian mode. */
-static int big_endian;
-
int stop_simulator;
-/* Cirrus DSP registers.
+#include "dis-asm.h"
+
+/* TODO: Tracing should be converted to common tracing module. */
+int trace = 0;
+int disas = 0;
+int trace_funcs = 0;
- We need to define these registers outside of maverick.c because
- maverick.c might not be linked in unless --target=arm9e-* in which
- case wrapper.c will not compile because it tries to access Cirrus
- registers. This should all go away once we get the Cirrus and ARM
- Coprocessor to coexist in armcopro.c-- aldyh. */
+static struct disassemble_info info;
+static char opbuf[1000];
-struct maverick_regs
+static int
+op_printf (char *buf, char *fmt, ...)
{
- union
- {
- int i;
- float f;
- } upper;
-
- union
- {
- int i;
- float f;
- } lower;
-};
+ int ret;
+ va_list ap;
+
+ va_start (ap, fmt);
+ ret = vsprintf (opbuf + strlen (opbuf), fmt, ap);
+ va_end (ap);
+ return ret;
+}
-union maverick_acc_regs
+static int
+sim_dis_read (bfd_vma memaddr ATTRIBUTE_UNUSED,
+ bfd_byte * ptr,
+ unsigned int length,
+ struct disassemble_info * info)
{
- long double ld; /* Acc registers are 72-bits. */
-};
+ ARMword val = (ARMword) *((ARMword *) info->application_data);
+
+ while (length--)
+ {
+ * ptr ++ = val & 0xFF;
+ val >>= 8;
+ }
+ return 0;
+}
-struct maverick_regs DSPregs[16];
-union maverick_acc_regs DSPacc[4];
-ARMword DSPsc;
+void
+print_insn (ARMword instr)
+{
+ int size;
+ disassembler_ftype disassemble_fn;
+
+ opbuf[0] = 0;
+ info.application_data = & instr;
+ disassemble_fn = disassembler (bfd_arch_arm, 0, 0, NULL);
+ size = disassemble_fn (0, & info);
+ fprintf (stderr, " %*s\n", size, opbuf);
+}
static void
-init ()
+init (void)
{
static int done;
{
ARMul_EmulateInit ();
state = ARMul_NewState ();
- state->bigendSig = (big_endian ? HIGH : LOW);
+ state->bigendSig = (CURRENT_TARGET_BYTE_ORDER == BFD_ENDIAN_BIG ? HIGH : LOW);
ARMul_MemoryInit (state, mem_size);
ARMul_OSInit (state);
- state->verbose = verbosity;
+ state->verbose = 0;
done = 1;
}
}
-/* Set verbosity level of simulator.
- This is not intended to produce detailed tracing or debugging information.
- Just summaries. */
-/* FIXME: common/run.c doesn't do this yet. */
-
-void
-sim_set_verbose (v)
- int v;
-{
- verbosity = v;
-}
-
-/* Set the memory size to SIZE bytes.
- Must be called before initializing simulator. */
-/* FIXME: Rename to sim_set_mem_size. */
-
-void
-sim_size (size)
- int size;
-{
- mem_size = size;
-}
-
void
-ARMul_ConsolePrint VPARAMS ((ARMul_State * state,
- const char * format,
- ...))
+ARMul_ConsolePrint (ARMul_State * state,
+ const char * format,
+ ...)
{
va_list ap;
}
}
-ARMword
-ARMul_Debug (state, pc, instr)
- ARMul_State * state ATTRIBUTE_UNUSED;
- ARMword pc ATTRIBUTE_UNUSED;
- ARMword instr ATTRIBUTE_UNUSED;
-{
- return 0;
-}
-
int
-sim_write (sd, addr, buffer, size)
- SIM_DESC sd ATTRIBUTE_UNUSED;
- SIM_ADDR addr;
- const unsigned char * buffer;
- int size;
+sim_write (SIM_DESC sd ATTRIBUTE_UNUSED,
+ SIM_ADDR addr,
+ const unsigned char * buffer,
+ int size)
{
int i;
}
int
-sim_read (sd, addr, buffer, size)
- SIM_DESC sd ATTRIBUTE_UNUSED;
- SIM_ADDR addr;
- unsigned char * buffer;
- int size;
+sim_read (SIM_DESC sd ATTRIBUTE_UNUSED,
+ SIM_ADDR addr,
+ unsigned char * buffer,
+ int size)
{
int i;
}
int
-sim_trace (sd)
- SIM_DESC sd ATTRIBUTE_UNUSED;
-{
- (*sim_callback->printf_filtered)
- (sim_callback,
- "This simulator does not support tracing\n");
- return 1;
-}
-
-int
-sim_stop (sd)
- SIM_DESC sd ATTRIBUTE_UNUSED;
+sim_stop (SIM_DESC sd ATTRIBUTE_UNUSED)
{
state->Emulate = STOP;
stop_simulator = 1;
}
void
-sim_resume (sd, step, siggnal)
- SIM_DESC sd ATTRIBUTE_UNUSED;
- int step;
- int siggnal ATTRIBUTE_UNUSED;
+sim_resume (SIM_DESC sd ATTRIBUTE_UNUSED,
+ int step,
+ int siggnal ATTRIBUTE_UNUSED)
{
state->EndCondition = 0;
stop_simulator = 0;
}
SIM_RC
-sim_create_inferior (sd, abfd, argv, env)
- SIM_DESC sd ATTRIBUTE_UNUSED;
- struct bfd * abfd;
- char ** argv;
- char ** env;
+sim_create_inferior (SIM_DESC sd ATTRIBUTE_UNUSED,
+ struct bfd * abfd,
+ char * const *argv,
+ char * const *env)
{
int argvlen = 0;
int mach;
- char **arg;
+ char * const *arg;
+
+ init ();
if (abfd != NULL)
{
mach = 0;
}
+#ifdef MODET
+ if (abfd != NULL && (bfd_get_start_address (abfd) & 1))
+ SETT;
+#endif
+
switch (mach)
{
default:
/* We wouldn't set the machine type with earlier toolchains, so we
explicitly select a processor capable of supporting all ARMs in
32bit mode. */
- /* We choose the XScale rather than the iWMMXt, because the iWMMXt
- removes the FPE emulator, since it conflicts with its coprocessors.
- For the most generic ARM support, we want the FPE emulator in place. */
+ ARMul_SelectProcessor (state, ARM_v5_Prop | ARM_v5e_Prop | ARM_v6_Prop);
+ break;
+
case bfd_mach_arm_XScale:
ARMul_SelectProcessor (state, ARM_v5_Prop | ARM_v5e_Prop | ARM_XScale_Prop | ARM_v6_Prop);
break;
break;
}
- if ( mach != bfd_mach_arm_3
- && mach != bfd_mach_arm_3M
- && mach != bfd_mach_arm_2
- && mach != bfd_mach_arm_2a)
- {
- /* Reset mode to ARM. A gdb user may rerun a program that had entered
- THUMB mode from the start and cause the ARM-mode startup code to be
- executed in THUMB mode. */
- ARMul_SetCPSR (state, SVC32MODE);
- }
-
+ memset (& info, 0, sizeof (info));
+ INIT_DISASSEMBLE_INFO (info, stdout, op_printf);
+ info.read_memory_func = sim_dis_read;
+ info.arch = bfd_get_arch (abfd);
+ info.mach = bfd_get_mach (abfd);
+ info.endian_code = BFD_ENDIAN_LITTLE;
+ if (info.mach == 0)
+ info.arch = bfd_arch_arm;
+ disassemble_init_for_target (& info);
+
if (argv != NULL)
{
/* Set up the command line by laboriously stringing together
return SIM_RC_OK;
}
-void
-sim_info (sd, verbose)
- SIM_DESC sd ATTRIBUTE_UNUSED;
- int verbose ATTRIBUTE_UNUSED;
-{
-}
-
static int
-frommem (state, memory)
- struct ARMul_State *state;
- unsigned char *memory;
+frommem (struct ARMul_State *state, unsigned char *memory)
{
if (state->bigendSig == HIGH)
return (memory[0] << 24) | (memory[1] << 16)
}
static void
-tomem (state, memory, val)
- struct ARMul_State *state;
- unsigned char *memory;
- int val;
+tomem (struct ARMul_State *state,
+ unsigned char *memory,
+ int val)
{
if (state->bigendSig == HIGH)
{
}
}
-int
-sim_store_register (sd, rn, memory, length)
- SIM_DESC sd ATTRIBUTE_UNUSED;
- int rn;
- unsigned char *memory;
- int length;
+static int
+arm_reg_store (SIM_CPU *cpu, int rn, unsigned char *memory, int length)
{
init ();
return length;
}
-int
-sim_fetch_register (sd, rn, memory, length)
- SIM_DESC sd ATTRIBUTE_UNUSED;
- int rn;
- unsigned char *memory;
- int length;
+static int
+arm_reg_fetch (SIM_CPU *cpu, int rn, unsigned char *memory, int length)
{
ARMword regval;
int len = length;
len -= 4;
memory += 4;
regval = 0;
- }
+ }
return length;
}
-#ifdef SIM_TARGET_SWITCHES
-
-static void sim_target_parse_arg_array PARAMS ((char **));
-
typedef struct
{
char * swi_option;
};
-int
-sim_target_parse_command_line (argc, argv)
- int argc;
- char ** argv;
+static int
+sim_target_parse_command_line (int argc, char ** argv)
{
int i;
if ((ptr == NULL) || (* ptr != '-'))
break;
+ if (strcmp (ptr, "-t") == 0)
+ {
+ trace = 1;
+ continue;
+ }
+
+ if (strcmp (ptr, "-z") == 0)
+ {
+ /* Remove this option from the argv array. */
+ for (arg = i; arg < argc; arg ++)
+ argv[arg] = argv[arg + 1];
+ argc --;
+ i --;
+ trace_funcs = 1;
+ continue;
+ }
+
+ if (strcmp (ptr, "-d") == 0)
+ {
+ /* Remove this option from the argv array. */
+ for (arg = i; arg < argc; arg ++)
+ argv[arg] = argv[arg + 1];
+ argc --;
+ i --;
+ disas = 1;
+ continue;
+ }
+
if (strncmp (ptr, SWI_SWITCH, sizeof SWI_SWITCH - 1) != 0)
continue;
for (arg = i; arg < argc; arg ++)
argv[arg] = argv[arg + 1];
argc --;
-
+
ptr = argv[i];
}
else
ptr += sizeof SWI_SWITCH;
swi_mask = 0;
-
+
while (* ptr)
{
int i;
- for (i = sizeof options / sizeof options[0]; i--;)
+ for (i = ARRAY_SIZE (options); i--;)
if (strncmp (ptr, options[i].swi_option,
strlen (options[i].swi_option)) == 0)
{
if (* ptr != 0)
fprintf (stderr, "Ignoring swi options: %s\n", ptr);
-
+
/* Remove this option from the argv array. */
for (arg = i; arg < argc; arg ++)
argv[arg] = argv[arg + 1];
}
static void
-sim_target_parse_arg_array (argv)
- char ** argv;
+sim_target_parse_arg_array (char ** argv)
{
- int i;
-
- for (i = 0; argv[i]; i++)
- ;
+ sim_target_parse_command_line (countargv (argv), argv);
+}
- sim_target_parse_command_line (i, argv);
+static sim_cia
+arm_pc_get (sim_cpu *cpu)
+{
+ return PC;
}
-void
-sim_target_display_usage (help)
- int help;
+static void
+arm_pc_set (sim_cpu *cpu, sim_cia pc)
{
- FILE *stream = help ? stdout : stderr;
+ ARMul_SetPC (state, pc);
+}
- fprintf (stream, "%s=<list> Comma seperated list of SWI protocols to supoport.\n\
- This list can contain: NONE, DEMON, ANGEL, REDBOOT and/or ALL.\n",
- SWI_SWITCH);
+static void
+free_state (SIM_DESC sd)
+{
+ if (STATE_MODULES (sd) != NULL)
+ sim_module_uninstall (sd);
+ sim_cpu_free_all (sd);
+ sim_state_free (sd);
}
-#endif
SIM_DESC
-sim_open (kind, ptr, abfd, argv)
- SIM_OPEN_KIND kind;
- host_callback *ptr;
- struct bfd *abfd;
- char **argv;
+sim_open (SIM_OPEN_KIND kind,
+ host_callback *cb,
+ struct bfd *abfd,
+ char * const *argv)
{
- sim_kind = kind;
- if (myname) free (myname);
- myname = (char *) xstrdup (argv[0]);
- sim_callback = ptr;
+ int i;
+ SIM_DESC sd = sim_state_alloc (kind, cb);
+ SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
-#ifdef SIM_TARGET_SWITCHES
- sim_target_parse_arg_array (argv);
-#endif
-
- /* Decide upon the endian-ness of the processor.
- If we can, get the information from the bfd itself.
- Otherwise look to see if we have been given a command
- line switch that tells us. Otherwise default to little endian. */
- if (abfd != NULL)
- big_endian = bfd_big_endian (abfd);
- else if (argv[1] != NULL)
+ /* 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)
{
- int i;
+ free_state (sd);
+ return 0;
+ }
- /* Scan for endian-ness and memory-size switches. */
- for (i = 0; (argv[i] != NULL) && (argv[i][0] != 0); i++)
- if (argv[i][0] == '-' && argv[i][1] == 'E')
- {
- char c;
+ if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK)
+ {
+ free_state (sd);
+ return 0;
+ }
- if ((c = argv[i][2]) == 0)
- {
- ++i;
- c = argv[i][0];
- }
+ /* 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;
+ }
- switch (c)
- {
- case 0:
- sim_callback->printf_filtered
- (sim_callback, "No argument to -E option provided\n");
- break;
+ /* 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;
+ }
- case 'b':
- case 'B':
- big_endian = 1;
- break;
+ /* Configure/verify the target byte order and other runtime
+ configuration options. */
+ if (sim_config (sd) != SIM_RC_OK)
+ {
+ sim_module_uninstall (sd);
+ return 0;
+ }
- case 'l':
- case 'L':
- big_endian = 0;
- break;
+ 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;
+ }
- default:
- sim_callback->printf_filtered
- (sim_callback, "Unrecognised argument to -E option\n");
- break;
- }
- }
- else if (argv[i][0] == '-' && argv[i][1] == 'm')
+ /* CPU specific initialization. */
+ for (i = 0; i < MAX_NR_PROCESSORS; ++i)
+ {
+ SIM_CPU *cpu = STATE_CPU (sd, i);
+
+ CPU_REG_FETCH (cpu) = arm_reg_fetch;
+ CPU_REG_STORE (cpu) = arm_reg_store;
+ CPU_PC_FETCH (cpu) = arm_pc_get;
+ CPU_PC_STORE (cpu) = arm_pc_set;
+ }
+
+ sim_callback = cb;
+
+ sim_target_parse_arg_array (argv);
+
+ if (argv[1] != NULL)
+ {
+ int i;
+
+ /* Scan for memory-size switches. */
+ for (i = 0; (argv[i] != NULL) && (argv[i][0] != 0); i++)
+ if (argv[i][0] == '-' && argv[i][1] == 'm')
{
if (argv[i][2] != '\0')
- sim_size (atoi (&argv[i][2]));
+ mem_size = atoi (&argv[i][2]);
else if (argv[i + 1] != NULL)
{
- sim_size (atoi (argv[i + 1]));
+ mem_size = atoi (argv[i + 1]);
i++;
}
else
"Missing argument to -m option\n");
return NULL;
}
-
}
}
- return (SIM_DESC) 1;
+ return sd;
}
void
-sim_close (sd, quitting)
- SIM_DESC sd ATTRIBUTE_UNUSED;
- int quitting ATTRIBUTE_UNUSED;
-{
- if (myname)
- free (myname);
- myname = NULL;
-}
-
-SIM_RC
-sim_load (sd, prog, abfd, from_tty)
- SIM_DESC sd;
- char *prog;
- bfd *abfd;
- int from_tty ATTRIBUTE_UNUSED;
-{
- bfd *prog_bfd;
-
- prog_bfd = sim_load_file (sd, myname, sim_callback, prog, abfd,
- sim_kind == SIM_OPEN_DEBUG, 0, sim_write);
- if (prog_bfd == NULL)
- return SIM_RC_FAIL;
- ARMul_SetPC (state, bfd_get_start_address (prog_bfd));
- if (abfd == NULL)
- bfd_close (prog_bfd);
- return SIM_RC_OK;
-}
-
-void
-sim_stop_reason (sd, reason, sigrc)
- SIM_DESC sd ATTRIBUTE_UNUSED;
- enum sim_stop *reason;
- int *sigrc;
+sim_stop_reason (SIM_DESC sd ATTRIBUTE_UNUSED,
+ enum sim_stop *reason,
+ int *sigrc)
{
if (stop_simulator)
{
*sigrc = 0;
}
}
-
-void
-sim_do_command (sd, cmd)
- SIM_DESC sd ATTRIBUTE_UNUSED;
- char *cmd ATTRIBUTE_UNUSED;
-{
- (*sim_callback->printf_filtered)
- (sim_callback,
- "This simulator does not accept any commands.\n");
-}
-
-void
-sim_set_callbacks (ptr)
- host_callback *ptr;
-{
- sim_callback = ptr;
-}
-
-char **
-sim_complete_command (SIM_DESC sd, const char *text, const char *word)
-{
- return NULL;
-}
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