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ppcmmu: implement mem_write_dbg method.

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This commit is contained in:
Maxim Poliakovski
2024-11-30 11:51:01 +01:00
parent 6d2872a07f
commit aa17bf06de
2 changed files with 43 additions and 0 deletions
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cpu/ppc/ppcmmu.cpp
+42
View File
@@ -1469,6 +1469,48 @@ uint64_t mem_read_dbg(uint32_t virt_addr, uint32_t size) {
return ret_val;
}
void mem_write_dbg(uint32_t virt_addr, uint64_t value, int size) {
uint32_t save_dsisr, save_dar;
uint64_t ret_val;
// save MMU-related CPU state
save_dsisr = ppc_state.spr[SPR::DSISR];
save_dar = ppc_state.spr[SPR::DAR];
mmu_exception_handler = dbg_exception_handler;
try {
switch (size) {
case 1:
mmu_write_vmem<uint8_t>(NO_OPCODE, virt_addr, value);
break;
case 2:
mmu_write_vmem<uint16_t>(NO_OPCODE, virt_addr, value);
break;
case 4:
mmu_write_vmem<uint32_t>(NO_OPCODE, virt_addr, value);
break;
case 8:
mmu_write_vmem<uint64_t>(NO_OPCODE, virt_addr, value);
break;
default:
mmu_write_vmem<uint8_t>(NO_OPCODE, virt_addr, value);
}
} catch (std::invalid_argument& exc) {
// restore MMU-related CPU state
mmu_exception_handler = ppc_exception_handler;
ppc_state.spr[SPR::DSISR] = save_dsisr;
ppc_state.spr[SPR::DAR] = save_dar;
// rethrow MMU exception
throw exc;
}
// restore MMU-related CPU state
mmu_exception_handler = ppc_exception_handler;
ppc_state.spr[SPR::DSISR] = save_dsisr;
ppc_state.spr[SPR::DAR] = save_dar;
}
bool mmu_translate_dbg(uint32_t guest_va, uint32_t &guest_pa) {
uint32_t save_dsisr, save_dar;
bool is_mapped;
cpu/ppc/ppcmmu.h
+1
View File
@@ -126,6 +126,7 @@ extern void mmu_pat_ctx_changed();
extern void tlb_flush_entry(uint32_t ea);
extern uint64_t mem_read_dbg(uint32_t virt_addr, uint32_t size);
extern void mem_write_dbg(uint32_t virt_addr, uint64_t value, int size);
uint8_t *mmu_translate_imem(uint32_t vaddr, uint32_t *paddr = nullptr);
bool mmu_translate_dbg(uint32_t guest_va, uint32_t &guest_pa);