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[CodeBlock] W^X dualbase impl. for Nintendo Switch

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This commit is contained in:
M4xw 2023-06-27 14:21:52 +02:00
parent 5e565cff35
commit 36584aa6f4
1 changed files with 24 additions and 1 deletions
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25
Common/CodeBlock.h
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@ -10,6 +10,11 @@
#include "Common/Log.h"
#include "Common/MemoryUtil.h"
#if PPSSPP_PLATFORM(SWITCH)
#include <cstdio>
#include <switch.h>
#endif // PPSSPP_PLATFORM(SWITCH)
// Everything that needs to generate code should inherit from this.
// You get memory management for free, plus, you can use all emitter functions without
// having to prefix them with gen-> or something similar.
@ -65,9 +70,20 @@ public:
// Call this before you generate any code.
void AllocCodeSpace(int size) {
region_size = size;
#if PPSSPP_PLATFORM(SWITCH)
Result rc = jitCreate(&jitController, size);
if(R_FAILED(rc)) {
printf("Failed to create Jitbuffer of size 0x%x err: 0x%x\n", size, rc);
}
printf("[NXJIT]: Initialized RX: %p RW: %p\n", jitController.rx_addr, jitController.rw_addr);
region = (u8 *)jitController.rx_addr;
writableRegion = (u8 *)jitController.rw_addr;
#else // PPSSPP_PLATFORM(SWITCH)
// The protection will be set to RW if PlatformIsWXExclusive.
region = (u8 *)AllocateExecutableMemory(region_size);
writableRegion = region;
#endif // !PPSSPP_PLATFORM(SWITCH)
T::SetCodePointer(region, writableRegion);
}
@ -135,8 +151,13 @@ public:
// Call this when shutting down. Don't rely on the destructor, even though it'll do the job.
void FreeCodeSpace() {
#if !PPSSPP_PLATFORM(SWITCH)
ProtectMemoryPages(region, region_size, MEM_PROT_READ | MEM_PROT_WRITE);
FreeExecutableMemory(region, region_size);
#else // !PPSSPP_PLATFORM(SWITCH)
jitClose(&jitController);
printf("[NXJIT]: Jit closed\n");
#endif // PPSSPP_PLATFORM(SWITCH)
region = nullptr;
writableRegion = nullptr;
region_size = 0;
@ -176,5 +197,7 @@ private:
const uint8_t *writeStart_ = nullptr;
uint8_t *writableRegion = nullptr;
size_t writeEstimated_ = 0;
#if PPSSPP_PLATFORM(SWITCH)
Jit jitController;
#endif // PPSSPP_PLATFORM(SWITCH)
};