From 12367ad02622ba0e6457a7bea7b859bcf85ecb46 Mon Sep 17 00:00:00 2001
From: negativeExponent
Date: Tue, 17 Dec 2019 01:10:56 +0800
Subject: Update

---
 frontend/switch/sys/mman.h | 125 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 125 insertions(+)
 create mode 100644 frontend/switch/sys/mman.h

(limited to 'frontend/switch/sys/mman.h')

diff --git a/frontend/switch/sys/mman.h b/frontend/switch/sys/mman.h
new file mode 100644
index 0000000..5e8d22e
--- /dev/null
+++ b/frontend/switch/sys/mman.h
@@ -0,0 +1,125 @@
+#ifndef MMAN_H
+#define MMAN_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <malloc.h>
+#include <switch.h>
+#include <stdlib.h>
+
+//#include "3ds_utils.h"
+
+#define PROT_READ       0b001
+#define PROT_WRITE      0b010
+#define PROT_EXEC       0b100
+#define MAP_PRIVATE     2
+#define MAP_FIXED       0x10
+#define MAP_ANONYMOUS   0x20
+
+#define MAP_FAILED      ((void *)-1)
+
+static void* dynarec_cache = NULL;
+static void* dynarec_cache_mapping = NULL;
+
+static inline void* mmap(void *addr, size_t len, int prot, int flags, int fd, off_t offset)
+{
+   (void)fd;
+   (void)offset;
+
+   //void* addr_out;
+    Result rc = svcMapPhysicalMemory(addr, len);
+    if (R_FAILED(rc))
+    {
+        printf("mmap failed\n");
+        return malloc(len);
+    }
+
+    return addr;
+
+//   if((prot == (PROT_READ | PROT_WRITE | PROT_EXEC)) &&
+//      (flags == (MAP_PRIVATE | MAP_ANONYMOUS)))
+//   {
+//      if(true)// __ctr_svchax)
+//     {
+//         /* this hack works only for pcsx_rearmed */
+//         uint32_t currentHandle;
+//
+//         if(!dynarec_cache)
+//            dynarec_cache = memalign(0x1000, len);
+//
+//         //svcDuplicateHandle(&currentHandle, 0xFFFF8001);
+//         //svcControlProcessMemory(currentHandle, addr, dynarec_cache,
+//         //                        len, MEMOP_MAP, prot);
+//         svcCloseHandle(currentHandle);
+//         dynarec_cache_mapping = addr;
+//         return addr;
+//      }
+//      else
+//      {
+//         printf("tried to mmap RWX pages without svcControlProcessMemory access !\n");
+//         return MAP_FAILED;
+//      }
+//
+//   }
+
+//   addr_out = memalign(0x1000, len);
+//   if(!addr_out)
+//      return MAP_FAILED;
+//
+//   return addr_out;
+}
+
+static inline int mprotect(void *addr, size_t len, int prot)
+{
+    return 0;
+   //if(true) // __ctr_svchax)
+   //{
+   //   uint32_t currentHandle;
+   //   //svcDuplicateHandle(&currentHandle, 0xFFFF8001);
+   //   //svcControlProcessMemory(currentHandle, addr, NULL,
+   //   //                        len, MEMOP_PROT, prot);
+   //   svcCloseHandle(currentHandle);
+   //   return 0;
+   //}
+
+   //printf("mprotect called without svcControlProcessMemory access !\n");
+   //return -1;
+}
+
+static inline int munmap(void *addr, size_t len)
+{
+    Result rc = svcUnmapPhysicalMemory(addr, len);
+    if (R_FAILED(rc))
+    {
+        printf("munmap failed\n");
+        free(addr);
+    }
+    return 0;
+//   if((addr == dynarec_cache_mapping) && true)//__ctr_svchax)
+//   {
+//      uint32_t currentHandle;
+//      //svcDuplicateHandle(&currentHandle, 0xFFFF8001);
+//      //svcControlProcessMemory(currentHandle,
+//      //                        dynarec_cache, dynarec_cache_mapping,
+//      //                        len, MEMOP_UNMAP, 0b111);
+//      svcCloseHandle(currentHandle);
+//      dynarec_cache_mapping = NULL;
+//
+//   }
+//   else
+      free(addr);
+
+   return 0;
+}
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif // MMAN_H
+
-- 
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