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Print r0 to terminal on 'swi 0xFC'

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This commit is contained in:
Abaresk 2024-01-09 12:40:58 -05:00
parent 740305cc25
commit e5ebc7679e
1 changed files with 14 additions and 0 deletions
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14
src/ARMInterpreter.cpp
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@ -278,6 +278,20 @@ void A_SVC(ARM* cpu)
void T_SVC(ARM* cpu) void T_SVC(ARM* cpu)
{ {
// Print from game. Execute `svc 0xFC` with the null-terminated string address in `r0`.
if ((cpu->CurInstr & 0xFF) == 0xFC)
{
u32 addr = cpu->R[0];
for (;;)
{
u32 c;
cpu->DataRead8(addr++, &c);
if (!c) break;
printf("%c", c);
}
return;
}
u32 oldcpsr = cpu->CPSR; u32 oldcpsr = cpu->CPSR;
cpu->CPSR &= ~0xBF; cpu->CPSR &= ~0xBF;
cpu->CPSR |= 0x93; cpu->CPSR |= 0x93;