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DSPLLE got rid of exception in progress hack. 

I didn't get any change in behaviour though.


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@3621 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
nakeee 2009-06-30 10:10:30 +00:00
parent fc63424bce
commit 292b3f675f
4 changed files with 20 additions and 16 deletions
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14
Source/Core/DSPCore/Src/DSPCore.cpp
View File

@ -157,11 +157,10 @@ void DSPCore_CheckExternalInterrupt()
// check if there is an external interrupt
if (g_dsp.cr & CR_EXTERNAL_INT)
{
if (dsp_SR_is_flag_set(FLAG_ENABLE_INTERUPT) && (g_dsp.exception_in_progress_hack == false))
if (dsp_SR_is_flag_set(SR_INT_ENABLE))
{
// level 7 is the interrupt exception
DSPCore_SetException(7);
// level 7 is the interrupt exception. is it?
// DSPCore_SetException(7);
g_dsp.cr &= ~CR_EXTERNAL_INT;
}
}
@ -170,21 +169,20 @@ void DSPCore_CheckExternalInterrupt()
void DSPCore_CheckExceptions()
{
// check exceptions
if ((g_dsp.exceptions != 0) && (!g_dsp.exception_in_progress_hack))
if (g_dsp.exceptions != 0)
{
for (int i = 0; i < 8; i++)
{
if (g_dsp.exceptions & (1 << i))
if (g_dsp.exceptions & (1 << i) && dsp_SR_is_flag_set(SR_INT_ENABLE))
{
_assert_msg_(MASTER_LOG, !g_dsp.exception_in_progress_hack, "assert while exception");
dsp_reg_store_stack(DSP_STACK_C, g_dsp.pc);
dsp_reg_store_stack(DSP_STACK_D, g_dsp.r[DSP_REG_SR]);
g_dsp.r[DSP_REG_SR] &= ~ SR_INT_ENABLE;
g_dsp.pc = i * 2;
g_dsp.exceptions &= ~(1 << i);
g_dsp.exception_in_progress_hack = true;
break;
}
}

12
Source/Core/DSPCore/Src/DSPHWInterface.cpp
View File

@ -75,6 +75,15 @@ void gdsp_mbox_write_h(u8 mbx, u16 val)
gdsp_mbox[mbx][0] = val & 0x7fff;
if (DSPHost_OnThread())
g_CriticalSection.Leave();
if (mbx == GDSP_MBOX_DSP)
{
DEBUG_LOG(DSPLLE, " - DSP writes mail to mbx %i: 0x%08x (pc=0x%04x)", mbx, gdsp_mbox_peek(GDSP_MBOX_DSP), g_dsp.pc);
} else {
// mailbox
DSPCore_SetException(7);
}
}
@ -91,7 +100,8 @@ void gdsp_mbox_write_l(u8 mbx, u16 val)
{
DEBUG_LOG(DSPLLE, " - DSP writes mail to mbx %i: 0x%08x (pc=0x%04x)", mbx, gdsp_mbox_peek(GDSP_MBOX_DSP), g_dsp.pc);
} else {
// Trigger exception?
// mailbox
DSPCore_SetException(7);
}
}

1
Source/Core/DSPCore/Src/DSPInterpreter.h
View File

@ -21,7 +21,6 @@
#include "DSPTables.h"
#define DSP_REG_MASK 0x1f
#define FLAG_ENABLE_INTERUPT 11
namespace DSPInterpreter {

7
Source/Core/DSPCore/Src/DspIntBranch.cpp
View File

@ -48,8 +48,8 @@ void call(const UDSPInstruction& opc)
// Generic callr implementation
// CALLRcc $R
// 0001 0111 rrr1 cccc
// Call functionif condition cc has been met.Push program counter of
// instruction following "call" tocall stack $st0. Set program counter to
// Call function if condition cc has been met.Push program counter of
// instruction following "call" to call stack $st0. Set program counter to
// register $R.
void callr(const UDSPInstruction& opc)
{
@ -121,13 +121,10 @@ void ret(const UDSPInstruction& opc)
// Return from exception. Pops stored status register $sr from data stack
// $st1 and program counter PC from call stack $st0 and sets $pc to this
// location.
// FIXME: is it also conditional? unknown opcodes 0x02fx
void rti(const UDSPInstruction& opc)
{
g_dsp.r[DSP_REG_SR] = dsp_reg_load_stack(DSP_STACK_D);
g_dsp.pc = dsp_reg_load_stack(DSP_STACK_C);
g_dsp.exception_in_progress_hack = false;
}
// HALT