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Added hooks into debugger classes

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This commit is contained in:
Nik Henson 2011-06-27 23:19:22 +00:00
parent 46944e8c96
commit aa0c598a4c
3 changed files with 103 additions and 5 deletions
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78
Src/CPU/PowerPC/ppc.cpp
View file

@ -41,6 +41,10 @@ typedef unsigned int UINT;
// Model 3 context provides read/write handlers
static class CBus *Bus = NULL; // pointer to Model 3 bus object (for access handlers)
#ifdef SUPERMODEL_DEBUGGER
// Pointer to current PPC debugger (if any)
static class Debugger::CPPCDebug *PPCDebug = NULL;
#endif
void ppc603_exception(int exception);
static void ppc603_check_interrupts(void);
@ -275,8 +279,6 @@ static int bus_freq_multiplier = 1;
static PPC_REGS ppc;
static UINT32 ppc_rotate_mask[32][32];
static void ppc_change_pc(UINT32 newpc)
{
UINT i;
@ -298,7 +300,6 @@ static void ppc_change_pc(UINT32 newpc)
// ppc.op = (UINT32 *)((UINT32)ppc.cur_fetch.ptr + (UINT32)(newpc - ppc.cur_fetch.start));
ppc.op = &ppc.cur_fetch.ptr[(newpc-ppc.cur_fetch.start)/4];
return;
}
}
@ -1030,6 +1031,11 @@ UINT32 ppc_get_gpr(unsigned num)
return ppc.r[num&31];
}
double ppc_get_fpr(unsigned num)
{
return ppc.fpr[num&31].fd;
}
UINT32 ppc_get_lr(void)
{
return ppc.lr;
@ -1043,4 +1049,68 @@ UINT32 ppc_read_spr(unsigned spr)
UINT32 ppc_read_sr(unsigned num)
{
return ppc.sr[num&15];
}
}
/******************************************************************************
Debugger Interface
******************************************************************************/
#ifdef SUPERMODEL_DEBUGGER
void ppc_attach_debugger(Debugger::CPPCDebug *PPCDebugPtr)
{
if (PPCDebug != NULL)
ppc_detach_debugger();
PPCDebug = PPCDebugPtr;
Bus = PPCDebug->AttachBus(Bus);
}
void ppc_detach_debugger()
{
if (PPCDebug == NULL)
return;
Bus = PPCDebug->DetachBus();
PPCDebug = NULL;
}
void ppc_set_pc(UINT32 pc)
{
ppc.pc = pc;
ppc_change_pc(pc);
ppc.npc = pc + 4;
}
UINT8 ppc_get_cr(unsigned num)
{
return ppc.cr[num&7];
}
void ppc_set_cr(unsigned num, UINT8 val)
{
ppc.cr[num&7] = val;
}
void ppc_set_gpr(unsigned num, UINT32 val)
{
ppc.r[num&31] = val;
}
void ppc_set_fpr(unsigned num, double val)
{
ppc.fpr[num&31].fd = val;
}
void ppc_write_spr(unsigned spr, UINT32 val)
{
// TODO
}
void ppc_write_sr(unsigned num, UINT32 val)
{
ppc.sr[num&15] = val;
}
UINT32 ppc_read_msr()
{
return ppc_get_msr();
}
#endif // SUPERMODEL_DEBUGGER

14
Src/CPU/PowerPC/ppc.h
View file

@ -358,9 +358,23 @@ extern void ppc_attach_bus(class CBus *BusPtr); // must be called first!
extern void ppc_save_state(class CBlockFile *SaveState);
extern void ppc_load_state(class CBlockFile *SaveState);
extern UINT32 ppc_get_gpr(unsigned num);
extern double ppc_get_fpr(unsigned num);
extern UINT32 ppc_get_lr(void);
extern UINT32 ppc_read_spr(unsigned spr);
extern UINT32 ppc_read_sr(unsigned num);
#ifdef SUPERMODEL_DEBUGGER
// These have been added to support the Supermodel debugger
extern void ppc_attach_debugger(class Debugger::CPPCDebug *PPCDebugPtr);
extern void ppc_detach_debugger();
extern void ppc_set_pc(UINT32 pc);
extern UINT8 ppc_get_cr(unsigned num);
extern void ppc_set_cr(unsigned num, UINT8 val);
extern void ppc_set_gpr(unsigned num, UINT32 val);
extern void ppc_set_fpr(unsigned num, double val);
extern void ppc_write_spr(unsigned spr, UINT32 val);
extern void ppc_write_sr(unsigned num, UINT32 val);
extern UINT32 ppc_read_msr();
#endif // SUPERMODEL_DEBUGGER
#endif // INCLUDED_PPC_H

16
Src/CPU/PowerPC/ppc603.c
View file

@ -27,6 +27,11 @@
void ppc603_exception(int exception)
{
#ifdef SUPERMODEL_DEBUGGER
if (PPCDebug != NULL)
PPCDebug->CheckException(exception);
#endif
switch( exception )
{
case EXCEPTION_IRQ: /* External Interrupt */
@ -284,8 +289,17 @@ int ppc_execute(int cycles)
opcode = *ppc.op++; // Supermodel byte reverses each aligned word (converting them to little endian) so they can be fetched directly
//opcode = BSWAP32(*ppc.op++);
ppc.npc = ppc.pc + 4;
#ifdef SUPERMODEL_DEBUGGER
if (PPCDebug != NULL)
{
while (PPCDebug->CheckExecution(ppc.pc, opcode))
opcode = *ppc.op++;
}
#endif
switch(opcode >> 26)
{
case 19: optable19[(opcode >> 1) & 0x3ff](opcode); break;