inline int GBA_InterruptCheck(void)
{
if(GBA_CPUGetHalted() == 2) return 0;
u32 IRQ_ENABLED = (REG_IME&1) && ((CPU.CPSR&F_IRQ_DIS) == 0);
if(REG_IE®_IF)
{
GBA_CPUClearHalted();
if(IRQ_ENABLED)
{
GBA_CPUChangeMode(M_IRQ);
CPU.R[R_LR] = CPU.R[R_PC]+4;//(CPU.EXECUTION_MODE==EXEC_ARM?4:2); // save return address
CPU.SPSR = CPU.CPSR; //save CPSR flags
CPU.CPSR &= ~(0x1F|F_T|F_I); //Enter IRQ mode, ARM state, IRQs disabled
CPU.CPSR |= M_IRQ|F_I;
CPU.R[R_PC] = 0x18; //jump to IRQ vector address
CPU.EXECUTION_MODE = EXEC_ARM;
return 1;
}
}
return 0;
}
static void _win_gba_disassembly_inputwindow_callback(char * text, int is_valid)
{
if(is_valid)
{
text[8] = '\0';
u32 newvalue = asciihex_to_int(text);
_cpu_t * cpu = GBA_CPUGet();
if(gba_debugger_register_to_change < 16)
cpu->R[gba_debugger_register_to_change] = newvalue;
else if(gba_debugger_register_to_change == 16)
{
cpu->CPSR = newvalue;
if(cpu->CPSR&F_T)
cpu->EXECUTION_MODE = EXEC_THUMB;
else
cpu->EXECUTION_MODE = EXEC_ARM;
GBA_CPUChangeMode(newvalue&0x1F);
}
else if(gba_debugger_register_to_change == 17)
cpu->SPSR = newvalue;
else if(gba_debugger_register_to_change == 100)
{
int increment;
if( ((disassemble_mode == GBA_DISASM_CPU_AUTO) && (cpu->EXECUTION_MODE == EXEC_ARM)) ||
(disassemble_mode == GBA_DISASM_CPU_ARM) ) //ARM
increment = 4;
else //THUMB
increment = 2;
gba_disassembler_start_address = newvalue-((CPU_DISASSEMBLER_MAX_INSTRUCTIONS/2)*increment);
}
}
}
