Add external interrupt tests

Source/DSPSpy/dsp_interface.h

@@ -26,6 +26,8 @@ public:
   virtual void Reset() = 0;
   virtual u32 CheckMailTo() = 0;
   virtual void SendMailTo(u32 mail) = 0;
+  virtual void SetInterrupt() = 0;
+  virtual bool CheckInterrupt() = 0;
 
   // Yeah, yeah, having a method here makes this not a pure interface - but
   // the implementation does nothing but calling the virtual methods above.

Source/DSPSpy/main_spy.cpp

@@ -25,6 +25,9 @@
 #include <ogc/consol.h>
 #include <unistd.h>
 
+// From libogc's timesupp.c (not in the header :|)
+extern "C" u32 gettick(void);
+
 #ifdef _MSC_VER
 // Just for easy looking :)
 #define HW_RVL  // HW_DOL
@@ -420,6 +423,35 @@ void handle_dsp_mail(void)
       DumpDSP_ROMs(dspbufP, &dspbufP[0x1000]);
     }
 
+    // Request for an interrupt
+    else if (mail == 0x88881111)
+    {
+      if (real_dsp.CheckInterrupt())
+      {
+        CON_PrintRow(4, 25, "Already has interrupt?");
+      }
+      else
+      {
+        const u32 now = gettick();
+        real_dsp.SetInterrupt();
+        u32 end = gettick();
+        u32 tries = 0;
+        while (real_dsp.CheckInterrupt() && end - now < 1000000)
+        {
+          end = gettick();
+          tries++;
+        }
+        if (end - now < 1000000)
+        {
+          CON_PrintRow(4, 25, "Interrupt after %d ticks / %d tries", end - now, tries);
+        }
+        else
+        {
+          CON_PrintRow(4, 25, "No interrupt after %d ticks / %d tries", end - now, tries);
+        }
+      }
+    }
+
     // SDK status mails
     /*
     // GBA ucode

Source/DSPSpy/real_dsp.cpp

@@ -51,3 +51,16 @@ void RealDSP::SendMailTo(u32 mail)
 {
   DSP_SendMailTo(mail);
 }
+
+void RealDSP::SetInterrupt()
+{
+  u32 level;
+  _CPU_ISR_Disable(level);
+  _dspReg[5] = (_dspReg[5] & ~(DSPCR_AIINT | DSPCR_ARINT | DSPCR_DSPINT)) | DSPCR_PIINT;
+  _CPU_ISR_Restore(level);
+}
+
+bool RealDSP::CheckInterrupt()
+{
+  return (_dspReg[5] & DSPCR_PIINT) != 0;
+}

Source/DSPSpy/real_dsp.h

@@ -8,8 +8,10 @@
 class RealDSP : public IDSP
 {
 public:
-  virtual void Init();
-  virtual void Reset();
-  virtual u32 CheckMailTo();
-  virtual void SendMailTo(u32 mail);
+  void Init() override;
+  void Reset() override;
+  u32 CheckMailTo() override;
+  void SendMailTo(u32 mail) override;
+  void SetInterrupt() override;
+  bool CheckInterrupt() override;
 };

Source/DSPSpy/tests/external_interrupt.ds

@@ -0,0 +1,57 @@
+; This test needs to manually specify IRQs
+	jmp		irq0
+	jmp		irq1
+	jmp		irq2
+	jmp		irq3
+	jmp		irq4
+	jmp		irq5
+	jmp		irq6
+	jmp		external_irq
+
+incdir  "tests"
+include "dsp_base_noirq.inc"
+
+test_main:
+	CLR $ACC0
+	SBCLR #2
+	SBCLR #3
+	SBCLR #4
+	SBCLR #5
+	SBCLR #6
+
+	LRI $AR0, #0
+
+	LRIS $AX0.H, #1
+	CALL send_back
+
+	SI @DMBH, #0x8888
+	SI @DMBL, #0x1111
+
+wait_cpu_read:
+	LRS $AC1.M, @DMBH
+	ANDCF $AC1.M, #0x8000
+	JLZ wait_cpu_read
+
+	CLR $ACC1
+second_loop:
+	INC $ACC1
+	CMPIS $AC1.M, #1
+	JNZ second_loop
+
+	SBSET #6
+	SBSET #5
+	LRI $AR0, #2
+	LRI $AR0, #3
+	LRI $AR0, #4
+	LRI $AR0, #5
+	LRI $AR0, #6
+
+	LRIS $AX0.H, #2
+	CALL send_back
+
+	JMP end_of_test
+
+external_irq:
+	LRIS $AX0.H, #3
+	CALL send_back
+	RTI

Source/DSPSpy/tests/external_interrupt_delay.ds

@@ -0,0 +1,55 @@
+; This test needs to manually specify IRQs
+	jmp		irq0
+	jmp		irq1
+	jmp		irq2
+	jmp		irq3
+	jmp		irq4
+	jmp		irq5
+	jmp		irq6
+	jmp		external_irq
+
+incdir  "tests"
+include "dsp_base_noirq.inc"
+
+test_main:
+	CLR $ACC0
+	SBCLR #5
+	SBCLR #6
+
+	LRI $AR0, #0
+
+	LRIS $AX0.H, #1
+	CALL send_back
+
+	SI @DMBH, #0x8888
+	SI @DMBL, #0x1111
+
+wait_cpu_read:
+	LRS $AC1.M, @DMBH
+	ANDCF $AC1.M, #0x8000
+	JLZ wait_cpu_read
+
+	; Wait a while (0x10000 increments)
+	CLR $ACC1
+second_loop:
+	INC $ACC1
+	CMPIS $AC1.M, #1
+	JNZ second_loop
+
+	SBSET #6
+	SBSET #5
+	LRI $AR0, #2
+	LRI $AR0, #3
+	LRI $AR0, #4
+	LRI $AR0, #5
+	LRI $AR0, #6
+
+	LRIS $AX0.H, #2
+	CALL send_back
+
+	JMP end_of_test
+
+external_irq:
+	LRIS $AX0.H, #3
+	CALL send_back
+	RTI

Source/DSPSpy/tests/external_interrupt_nested.ds

@@ -0,0 +1,77 @@
+; This test needs to manually specify IRQs
+	jmp		irq0
+	jmp		irq1
+	jmp		irq2
+	jmp		irq3
+	jmp		irq4
+	jmp		irq5
+	jmp		irq6
+	jmp		external_irq
+
+incdir  "tests"
+include "dsp_base_noirq.inc"
+
+test_main:
+	CLR $ACC0
+	SBCLR #2
+	SBCLR #3
+	SBCLR #4
+	SBCLR #5
+	SBCLR #6
+
+	LRI $AR0, #0
+
+	LRIS $AX0.H, #1
+	CALL send_back
+
+	SI @DMBH, #0x8888
+	SI @DMBL, #0x1111
+
+wait_cpu_read:
+	LRS $AC1.M, @DMBH
+	ANDCF $AC1.M, #0x8000
+	JLZ wait_cpu_read
+
+	CLR $ACC1
+second_loop:
+	INC $ACC1
+	CMPIS $AC1.M, #1
+	JNZ second_loop
+
+	SBSET #6
+	SBSET #5
+	LRI $AR0, #2
+	LRI $AR0, #3
+	LRI $AR0, #4
+	LRI $AR0, #5
+	LRI $AR0, #6
+
+	LRIS $AX0.H, #2
+	CALL send_back
+
+	JMP end_of_test
+
+external_irq:
+	INCM $AC0.M
+	LRIS $AX0.H, #3
+	CALL send_back
+
+	; Only trigger a nested interrupt the first time through
+	CMPIS $AC0.M, #1
+	RTINZ
+
+	SI @DMBH, #0x8888
+	SI @DMBL, #0x1111
+
+wait_cpu_read_irq:
+	LRS $AC1.M, @DMBH
+	ANDCF $AC1.M, #0x8000
+	JLZ wait_cpu_read_irq
+
+	CLR $ACC1
+second_loop_irq:
+	INC $ACC1
+	CMPIS $AC1.M, #1
+	JNZ second_loop_irq
+
+	RTI

Source/DSPSpy/tests/external_interrupt_no_delay.ds

@@ -0,0 +1,57 @@
+; This test needs to manually specify IRQs
+	jmp		irq0
+	jmp		irq1
+	jmp		irq2
+	jmp		irq3
+	jmp		irq4
+	jmp		irq5
+	jmp		irq6
+	jmp		external_irq
+
+incdir  "tests"
+include "dsp_base_noirq.inc"
+
+test_main:
+	CLR $ACC0
+	SBCLR #5
+	SBCLR #6
+
+	LRI $AR0, #0
+
+	LRIS $AX0.H, #1
+	CALL send_back
+
+	SI @DMBH, #0x8888
+	SI @DMBL, #0x1111
+
+wait_cpu_read:
+	LRS $AC1.M, @DMBH
+	ANDCF $AC1.M, #0x8000
+	JLZ wait_cpu_read
+
+	; Wait a while (0x10000 increments)
+	CLR $ACC1
+
+	SBSET #6
+	SBSET #5
+
+second_loop:
+	INC $ACC1
+	CMPIS $AC1.M, #1
+	JNZ second_loop
+
+	LRI $AR0, #2
+	LRI $AR0, #3
+	LRI $AR0, #4
+	LRI $AR0, #5
+	LRI $AR0, #6
+
+	LRIS $AX0.H, #2
+	CALL send_back
+
+	JMP end_of_test
+
+external_irq:
+	LRIS $AX0.H, #3
+	CALL send_back
+	RTI

Source/DSPSpy/tests/external_interrupt_other_interrupt_on_return.ds

@@ -0,0 +1,85 @@
+; This test needs to manually specify IRQs
+	jmp		irq0
+	jmp		irq1
+	jmp		irq2
+	jmp		irq3
+	jmp		irq4
+	jmp		accov_irq
+	jmp		irq6
+	jmp		external_irq
+
+incdir  "tests"
+include "dsp_base_noirq.inc"
+
+test_main:
+	; Use the accelerator to generate an IRQ by setting the start and end address to 0
+	; This will result in an interrupt on every read
+	SI @0xffda, #0 ; pred_scale
+	SI @0xffdb, #0 ; yn1
+	SI @0xffdc, #0 ; yn2
+	SI @0xffd1, #0 ; SampleFormat
+	SI @ACSAH, #0
+	SI @ACCAH, #0
+	SI @ACSAL, #0
+	SI @ACCAL, #0
+	SI @ACEAH, #0
+	SI @ACEAL, #0
+
+	CLR $ACC0
+	SBCLR #2
+	SBSET #3
+	SBCLR #4
+	SBCLR #5
+	SBCLR #6
+
+	LRI $AR0, #0
+
+	LRIS $AX0.H, #1
+	CALL send_back
+
+	SI @DMBH, #0x8888
+	SI @DMBL, #0x1111
+
+wait_cpu_read:
+	LRS $AC1.M, @DMBH
+	ANDCF $AC1.M, #0x8000
+	JLZ wait_cpu_read
+
+	CLR $ACC1
+second_loop:
+	INC $ACC1
+	CMPIS $AC1.M, #1
+	JNZ second_loop
+
+	SBSET #6
+	SBSET #5
+	; Trigger an interrupt at the same time as external interrupts become enabled
+	LRS $AX0.L, @ARAM
+	LRI $AR0, #3
+	LRI $AR0, #4
+	LRI $AR0, #5
+	LRI $AR0, #6
+
+	LRIS $AX0.H, #2
+	CALL send_back
+
+	JMP end_of_test
+
+accov_irq:
+	INCM $AC0.M
+
+	; Restore registers, otherwise no new interrupt will be generated
+	SI @0xffda, #0 ; pred_scale
+	SI @0xffdb, #0 ; yn1
+	SI @0xffdc, #0 ; yn2
+
+	LRIS $AX0.H, #3
+	CALL send_back
+
+	RTI
+
+external_irq:
+	INCM $AC0.M
+	LRIS $AX0.H, #4
+	CALL send_back
+	RTI

Source/DSPSpy/tests/external_interrupt_toggle.ds

@@ -0,0 +1,61 @@
+; This test needs to manually specify IRQs
+	jmp		irq0
+	jmp		irq1
+	jmp		irq2
+	jmp		irq3
+	jmp		irq4
+	jmp		irq5
+	jmp		irq6
+	jmp		external_irq
+
+incdir  "tests"
+include "dsp_base_noirq.inc"
+
+test_main:
+	CLR $ACC0
+	SBCLR #5
+	SBCLR #6
+
+	LRI $AR0, #0
+
+	LRIS $AX0.H, #1
+	CALL send_back
+
+	SI @DMBH, #0x8888
+	SI @DMBL, #0x1111
+
+wait_cpu_read:
+	LRS $AC1.M, @DMBH
+	ANDCF $AC1.M, #0x8000
+	JLZ wait_cpu_read
+
+	; Wait a while (0x10000 increments)
+	CLR $ACC1
+second_loop:
+	INC $ACC1
+	CMPIS $AC1.M, #1
+	JNZ second_loop
+
+	SBSET #6
+	SBSET #5
+	SBCLR #5
+	SBSET #5
+	SBCLR #5
+	SBSET #5
+	SBCLR #5
+	SBSET #5
+	SBCLR #5
+	SBSET #5
+	LRI $AR0, #2
+	LRI $AR0, #3
+	LRI $AR0, #4
+
+	LRIS $AX0.H, #2
+	CALL send_back
+
+	JMP end_of_test
+
+external_irq:
+	LRIS $AX0.H, #3
+	CALL send_back
+	RTI

Source/DSPSpy/tests/external_interrupt_toggle_2.ds

@@ -0,0 +1,64 @@
+; This test needs to manually specify IRQs
+	jmp		irq0
+	jmp		irq1
+	jmp		irq2
+	jmp		irq3
+	jmp		irq4
+	jmp		irq5
+	jmp		irq6
+	jmp		external_irq
+
+incdir  "tests"
+include "dsp_base_noirq.inc"
+
+test_main:
+	CLR $ACC0
+	SBCLR #5
+	SBCLR #6
+
+	LRI $AR0, #0
+
+	LRIS $AX0.H, #1
+	CALL send_back
+
+	SI @DMBH, #0x8888
+	SI @DMBL, #0x1111
+
+wait_cpu_read:
+	LRS $AC1.M, @DMBH
+	ANDCF $AC1.M, #0x8000
+	JLZ wait_cpu_read
+
+	; Wait a while (0x10000 increments)
+	CLR $ACC1
+second_loop:
+	INC $ACC1
+	CMPIS $AC1.M, #1
+	JNZ second_loop
+
+	SBSET #6
+	SBSET #5
+	SBCLR #5
+	LRI $AR0, #2
+	SBSET #5
+	SBCLR #5
+	LRI $AR0, #3
+	SBSET #5
+	SBCLR #5
+	LRI $AR0, #4
+	SBSET #5
+	SBCLR #5
+	LRI $AR0, #5
+	SBSET #5
+	LRI $AR0, #6
+	LRI $AR0, #7
+
+	LRIS $AX0.H, #2
+	CALL send_back
+
+	JMP end_of_test
+
+external_irq:
+	LRIS $AX0.H, #3
+	CALL send_back
+	RTI