static mem_addr
copy_int_to_stack (int context, int n)
{
reg_image_t ®_image = reg_images[context];
set_mem_word (reg_image.context, reg_image.R[REG_SP], n);
reg_image.R[REG_SP] -= BYTES_PER_WORD;
return ((mem_addr) reg_image.R[REG_SP] + BYTES_PER_WORD);
}
static void
set_value_action (char *location_str, char *value_str)
{
unsigned long value;
int reg_no;
if (strlen (value_str) == 3
&& value_str[0] == '\''
&& value_str[2] == '\'')
{
/* Literal of the form: 'c' */
value = value_str[1];
}
else
{
value = strtol (value_str, NULL, 0);
}
reg_no = register_name_to_number (location_str);
if (reg_no < 0)
if (*location_str == '$' || *location_str == 'r' || *location_str == 'R')
reg_no = register_name_to_number (location_str + 1);
if (reg_no == 0)
error ("Cannot modify register 0\n");
else if (reg_no > 0)
R[reg_no] = (reg_word)value;
else if (streq (location_str, "Status") || streq (location_str, "status"))
CP0_Status = (reg_word)value;
else if (streq (location_str, "PC") || streq (location_str, "pc"))
PC = (reg_word)value;
else if (streq (location_str, "EPC") | streq (location_str, "epc"))
CP0_EPC = (reg_word)value;
else
{
char *eptr;
mem_addr addr;
/* Try to parse string as a number */
addr = strtol (location_str, &eptr, 0);
if (eptr == location_str)
error ("Unknown register selected: %s\n", location_str);
else
set_mem_word (addr, value);
}
redisplay_data ();
}
void
initialize_run_stack (int argc, char **argv)
{
//FIXME: eventually run for both or neither
int context = 0;
reg_image_t ®_image = reg_images[context];
char **p;
extern char **environ;
int i, j = 0, env_j;
mem_addr addrs[10000];
reg_image.R[REG_SP] = STACK_TOP - 1; /* Initialize $sp */
/* Put strings on stack: */
/* env: */
for (p = environ; *p != NULL; p++)
addrs[j++] = copy_str_to_stack (context, *p);
env_j = j;
/* argv; */
for (i = 0; i < argc; i++)
addrs[j++] = copy_str_to_stack (context, argv[i]);
/* Align stack pointer for word-size data */
reg_image.R[REG_SP] = reg_image.R[REG_SP] & ~3; /* Round down to nearest word */
reg_image.R[REG_SP] -= BYTES_PER_WORD; /* First free word on stack */
reg_image.R[REG_SP] = reg_image.R[REG_SP] & ~7; /* Double-word align stack-pointer*/
/* Build vectors on stack: */
/* env: */
(void)copy_int_to_stack (context, 0); /* Null-terminate vector */
for (i = env_j - 1; i >= 0; i--)
reg_image.R[REG_A2] = copy_int_to_stack (context, addrs[i]);
/* argv: */
(void)copy_int_to_stack (context, 0); /* Null-terminate vector */
for (i = j - 1; i >= env_j; i--)
reg_image.R[REG_A1] = copy_int_to_stack (context, addrs[i]);
/* argc: */
reg_image.R[REG_A0] = argc;
set_mem_word (context, reg_image.R[REG_SP], argc); /* Leave argc on stack */
}
void dataTextEdit::changeValue()
{
QTextCursor cursor;
mem_addr addr = addrFromPos(&cursor);
if (addr != 0)
{
int base = Window->DataDisplayBase();
QString val = promptForNewValue("New Contents for " + formatAddress(addr), &base);
bool ok;
int newMemVal = val.toInt(&ok, base);
if (ok)
{
set_mem_word(addr, newMemVal);
}
Window->DisplayDataSegments(true);
}
}
