/* Simulator for TI MSP430 and MSP430X
- Copyright (C) 2013-2015 Free Software Foundation, Inc.
+ Copyright (C) 2013-2020 Free Software Foundation, Inc.
Contributed by Red Hat.
Based on sim/bfin/bfin-sim.c which was contributed by Analog Devices, Inc.
#include <inttypes.h>
#include <unistd.h>
#include <assert.h>
-#include "bfd.h"
#include "opcode/msp430-decode.h"
#include "sim-main.h"
#include "sim-syscall.h"
-#include "dis-asm.h"
#include "targ-vals.h"
-#include "trace.h"
-
-static int
-loader_write_mem (SIM_DESC sd,
- SIM_ADDR taddr,
- const unsigned char *buf,
- int bytes)
-{
- SIM_CPU *cpu = MSP430_CPU (sd);
- return sim_core_write_buffer (sd, cpu, write_map, buf, taddr, bytes);
-}
static sim_cia
msp430_pc_fetch (SIM_CPU *cpu)
cpu->state.regs[0] = newpc;
}
-static long
-lookup_symbol (SIM_DESC sd, const char *name)
-{
- struct bfd *abfd = STATE_PROG_BFD (sd);
- asymbol **symbol_table = STATE_SYMBOL_TABLE (sd);
- long number_of_symbols = STATE_NUM_SYMBOLS (sd);
- long i;
-
- if (symbol_table == NULL)
- {
- long storage_needed;
-
- storage_needed = bfd_get_symtab_upper_bound (abfd);
- if (storage_needed <= 0)
- return -1;
-
- STATE_SYMBOL_TABLE (sd) = symbol_table = xmalloc (storage_needed);
- STATE_NUM_SYMBOLS (sd) = number_of_symbols =
- bfd_canonicalize_symtab (abfd, symbol_table);
- }
-
- for (i = 0; i < number_of_symbols; i++)
- if (strcmp (symbol_table[i]->name, name) == 0)
- {
- long val = symbol_table[i]->section->vma + symbol_table[i]->value;
- return val;
- }
- return -1;
-}
-
static int
msp430_reg_fetch (SIM_CPU *cpu, int regno, unsigned char *buf, int len)
{
sim_open (SIM_OPEN_KIND kind,
struct host_callback_struct *callback,
struct bfd *abfd,
- char **argv)
+ char * const *argv)
{
SIM_DESC sd = sim_state_alloc (kind, callback);
char c;
- struct bfd *prog_bfd;
/* Initialise the simulator. */
return 0;
}
- prog_bfd = sim_load_file (sd, argv[0], callback,
- "the program",
- STATE_PROG_BFD (sd),
- 0 /* verbose */,
- 1 /* use LMA instead of VMA */,
- loader_write_mem);
- /* Allow prog_bfd to be NULL - this is needed by the GDB testsuite. */
-
/* Establish any remaining configuration options. */
if (sim_config (sd) != SIM_RC_OK)
{
assert (MAX_NR_PROCESSORS == 1);
msp430_initialize_cpu (sd, MSP430_CPU (sd));
- msp430_trace_init (STATE_PROG_BFD (sd));
-
- if (prog_bfd != NULL)
- {
- MSP430_CPU (sd)->state.cio_breakpoint = lookup_symbol (sd, "C$$IO$$");
- MSP430_CPU (sd)->state.cio_buffer = lookup_symbol (sd, "__CIOBUF__");
- if (MSP430_CPU (sd)->state.cio_buffer == -1)
- MSP430_CPU (sd)->state.cio_buffer = lookup_symbol (sd, "_CIOBUF_");
- }
+ MSP430_CPU (sd)->state.cio_breakpoint = trace_sym_value (sd, "C$$IO$$");
+ MSP430_CPU (sd)->state.cio_buffer = trace_sym_value (sd, "__CIOBUF__");
+ if (MSP430_CPU (sd)->state.cio_buffer == -1)
+ MSP430_CPU (sd)->state.cio_buffer = trace_sym_value (sd, "_CIOBUF_");
return sd;
}
-void
-msp430_sim_close (SIM_DESC sd, int quitting)
-{
- free (STATE_SYMBOL_TABLE (sd));
-}
-
SIM_RC
sim_create_inferior (SIM_DESC sd,
struct bfd *abfd,
- char **argv,
- char **env)
+ char * const *argv,
+ char * const *env)
{
unsigned char resetv[2];
int c;
get_op (SIM_DESC sd, MSP430_Opcode_Decoded *opc, int n)
{
MSP430_Opcode_Operand *op = opc->op + n;
- int rv;
+ int rv = 0;
int addr;
unsigned char buf[4];
int incval = 0;
/* Index values are signed. */
if (addr & (1 << (sign - 1)))
- addr |= -1 << sign;
+ addr |= -(1 << sign);
addr += reg;
put_op (SIM_DESC sd, MSP430_Opcode_Decoded *opc, int n, int val)
{
MSP430_Opcode_Operand *op = opc->op + n;
- int rv;
+ int rv = 0;
int addr;
unsigned char buf[4];
int incval = 0;
/* Index values are signed. */
if (addr & (1 << (sign - 1)))
- addr |= -1 << sign;
+ addr |= -(1 << sign);
addr += reg;
#define DSRC get_op (sd, opcode, 0)
#define DEST(V) put_op (sd, opcode, 0, (V))
-static int
-msp430_dis_read (bfd_vma memaddr,
- bfd_byte *myaddr,
- unsigned int length,
- struct disassemble_info *dinfo)
-{
- SIM_DESC sd = dinfo->private_data;
- sim_core_read_buffer (sd, MSP430_CPU (sd), 0, myaddr, memaddr, length);
- return 0;
-}
-
#define DO_ALU(OP,SOP,MORE) \
{ \
int s1 = DSRC; \
if ((call_addr & ~0x3f) == 0x00180)
{
/* Syscall! */
+ int arg1, arg2, arg3, arg4;
int syscall_num = call_addr & 0x3f;
- int arg1 = MSP430_CPU (sd)->state.regs[12];
- int arg2 = MSP430_CPU (sd)->state.regs[13];
- int arg3 = MSP430_CPU (sd)->state.regs[14];
- int arg4 = MSP430_CPU (sd)->state.regs[15];
+
+ /* syscall_num == 2 is used for the variadic function "open".
+ The arguments are set up differently for variadic functions.
+ See slaa534.pdf distributed by TI. */
+ if (syscall_num == 2)
+ {
+ arg1 = MSP430_CPU (sd)->state.regs[12];
+ arg2 = mem_get_val (sd, SP, 16);
+ arg3 = mem_get_val (sd, SP + 2, 16);
+ arg4 = mem_get_val (sd, SP + 4, 16);
+ }
+ else
+ {
+ arg1 = MSP430_CPU (sd)->state.regs[12];
+ arg2 = MSP430_CPU (sd)->state.regs[13];
+ arg3 = MSP430_CPU (sd)->state.regs[14];
+ arg4 = MSP430_CPU (sd)->state.regs[15];
+ }
MSP430_CPU (sd)->state.regs[12] = sim_syscall (MSP430_CPU (sd),
syscall_num, arg1, arg2,
MSP430_Opcode_Decoded opcode_buf;
MSP430_Opcode_Decoded *opcode = &opcode_buf;
int s1, s2, result;
- int u1, u2, uresult;
- int c, reg;
+ int u1 = 0, u2, uresult;
+ int c = 0, reg;
int sp;
int carry_to_use;
int n_repeats;
int rept;
- int op_bytes, op_bits;
+ int op_bytes = 0, op_bits;
PC &= 0xfffff;
opcode_pc = PC;
break;
}
- if (TRACE_INSN_P (MSP430_CPU (sd)))
- {
- disassemble_info info;
- unsigned char b[10];
-
- msp430_trace_one (opcode_pc);
-
- sim_core_read_buffer (sd, MSP430_CPU (sd), 0, b, opcode_pc, opsize);
-
- init_disassemble_info (&info, stderr, (fprintf_ftype) fprintf);
- info.private_data = sd;
- info.read_memory_func = msp430_dis_read;
-
- fprintf (stderr, "%#8x ", opcode_pc);
- for (i = 0; i < opsize; i += 2)
- fprintf (stderr, " %02x%02x", b[i+1], b[i]);
- for (; i < 6; i += 2)
- fprintf (stderr, " ");
- fprintf (stderr, " ");
- print_insn_msp430 (opcode_pc, &info);
- fprintf (stderr, "\n");
- fflush (stdout);
- }
-
if (TRACE_ANY_P (MSP430_CPU (sd)))
trace_prefix (sd, MSP430_CPU (sd), NULL_CIA, opcode_pc,
- TRACE_LINENUM_P (MSP430_CPU (sd)), NULL, 0, "");
+ TRACE_LINENUM_P (MSP430_CPU (sd)), NULL, 0, " ");
+
+ TRACE_DISASM (MSP430_CPU (sd), opcode_pc);
carry_to_use = 0;
switch (opcode->id)
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