/**
* Emulator Native Features ID opcode interception.
*/
unsigned long OpCode_NatFeat_ID(uae_u32 opcode)
{
Uint32 stack = Regs[REG_A7] + SIZE_LONG; /* skip return address */
Uint16 SR = M68000_GetSR();
if (NatFeat_ID(stack, &(Regs[REG_D0]))) {
m68k_incpc(2);
regs.ir = regs.irc;
get_word_prefetch(2);
}
return 4 * CYCLE_UNIT / 2;
}
/**
* Emulator Native Features call opcode interception.
*/
unsigned long OpCode_NatFeat_Call(uae_u32 opcode)
{
Uint32 stack = Regs[REG_A7] + SIZE_LONG; /* skip return address */
Uint16 SR = M68000_GetSR();
bool super;
super = ((SR & SR_SUPERMODE) == SR_SUPERMODE);
if (NatFeat_Call(stack, super, &(Regs[REG_D0]))) {
CpuDoNOP ();
}
return 4;
}
/**
* Emulator Native Features call opcode interception.
*/
unsigned long OpCode_NatFeat_Call(uae_u32 opcode)
{
Uint32 stack = Regs[REG_A7] + SIZE_LONG; /* skip return address */
Uint16 SR = M68000_GetSR();
bool super;
super = ((SR & SR_SUPERMODE) == SR_SUPERMODE);
if (NatFeat_Call(stack, super, &(Regs[REG_D0]))) {
m68k_incpc(2);
regs.ir = regs.irc;
get_word_prefetch(2);
}
return 4 * CYCLE_UNIT / 2;
}
/**
* Parse unsigned register/symbol/number value and set it to "number"
* and the number base used for parsing to "base".
* Return how many characters were parsed or zero for error.
*/
static int getValue(const char *str, Uint32 *number, int *base, bool bForDsp)
{
char name[64];
const char *end;
Uint32 mask, *addr;
int len;
for (end = str; *end == '_' || isalnum(*end); end++);
len = end-str;
if (len >= (int)sizeof(name)) {
fprintf(stderr, "ERROR: symbol name at '%s' too long (%d chars)\n", str, len);
return 0;
}
memcpy(name, str, len);
name[len] = '\0';
*base = 0; /* no base (e.g. variable) */
/* internal Hatari variable? */
if (BreakCond_GetHatariVariable(name, number)) {
return len;
}
if (bForDsp) {
int regsize = DSP_GetRegisterAddress(name, &addr, &mask);
/* DSP register or symbol? */
switch (regsize) {
case 16:
*number = (*((Uint16*)addr) & mask);
return len;
case 32:
*number = (*addr & mask);
return len;
default:
if (Symbols_GetDspAddress(SYMTYPE_ALL, name, number)) {
return len;
}
}
} else {
/* a special case CPU register? */
if (strcasecmp(name, "PC") == 0) {
*number = M68000_GetPC();
return len;
}
if (strcasecmp(name, "SR") == 0) {
*number = M68000_GetSR();
return len;
}
/* a normal CPU register or symbol? */
if (DebugCpu_GetRegisterAddress(name, &addr)) {
*number = *addr;
return len;
}
if (Symbols_GetCpuAddress(SYMTYPE_ALL, name, number)) {
return len;
}
}
/* none of above, assume it's a number */
return getNumber(str, number, base);
}