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Match Linux/ppc native version better: jump to ROM with EmulatorData in r4,

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preserve CR & XER registers on EmulOp.
This commit is contained in:
gbeauche 2003-12-25 23:54:36 +00:00
parent 561046449a
commit 97ce4fdc75
1 changed files with 9 additions and 2 deletions
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11
SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp
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@ -127,9 +127,11 @@ public:
// Constructor
sheepshaver_cpu();
// Condition Register accessors
// CR & XER accessors
uint32 get_cr() const { return cr().get(); }
void set_cr(uint32 v) { cr().set(v); }
uint32 get_xer() const { return xer().get(); }
void set_xer(uint32 v) { xer().set(v); }
// Execute 68k routine
void execute_68k(uint32 entry, M68kRegisters *r);
@ -241,7 +243,11 @@ void sheepshaver_cpu::execute_sheep(uint32 opcode)
for (int i = 0; i < 7; i++)
r68.a[i] = gpr(16 + i);
r68.a[7] = gpr(1);
uint32 saved_cr = get_cr() & CR_field<2>::mask();
uint32 saved_xer = get_xer();
EmulOp(&r68, gpr(24), EMUL_OP_field::extract(opcode) - 3);
set_cr(saved_cr);
set_xer(saved_xer);
for (int i = 0; i < 8; i++)
gpr(8 + i) = r68.d[i];
for (int i = 0; i < 7; i++)
@ -623,6 +629,7 @@ void init_emul_ppc(void)
// Initialize main CPU emulator
main_cpu = new sheepshaver_cpu();
main_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
main_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
WriteMacInt32(XLM_RUN_MODE, MODE_68K);
#if MULTICORE_CPU
@ -687,7 +694,7 @@ void exit_emul_ppc(void)
void emul_ppc(uint32 entry)
{
current_cpu = main_cpu;
#if DEBUG
#if 0
current_cpu->start_log();
#endif
// start emulation loop and enable code translation or caching