[pcsx_rearmed.git] / frontend / 3ds / sys / mman.h

#ifndef MMAN_H
#define MMAN_H

#ifdef __cplusplus
extern "C" {
#endif

#include <stdlib.h>
#include <stdint.h>

#include <3ds/svc.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)

void SysPrintf(const char *fmt, ...);

#if 0 // not used
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;

   if((prot == (PROT_READ | PROT_WRITE | PROT_EXEC)) &&
      (flags == (MAP_PRIVATE | MAP_ANONYMOUS)))
   {
      if(__ctr_svchax)
      {
         /* this hack works only for pcsx_rearmed */
         uint32_t currentHandle;

         if (!dynarec_cache) {
            dynarec_cache = memalign(0x1000, len);
            if (!dynarec_cache)
               return MAP_FAILED;
         }

         svcDuplicateHandle(&currentHandle, 0xFFFF8001);
         svcControlProcessMemory(currentHandle, (uintptr_t)addr, (uintptr_t)dynarec_cache,
                                 len, MEMOP_MAP, prot);
         svcCloseHandle(currentHandle);
         dynarec_cache_mapping = addr;
         memset(addr, 0, len);
         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;

   memset(addr_out, 0, len);
   return addr_out;
}

static inline int munmap(void *addr, size_t len)
{
   if((addr == dynarec_cache_mapping) && __ctr_svchax)
   {
      uint32_t currentHandle;
      svcDuplicateHandle(&currentHandle, 0xFFFF8001);
      svcControlProcessMemory(currentHandle,
                              (uintptr_t)dynarec_cache, (uintptr_t)dynarec_cache_mapping,
                              len, MEMOP_UNMAP, 0b111);
      svcCloseHandle(currentHandle);
      dynarec_cache_mapping = NULL;

   }
   else
      free(addr);

   return 0;
}
#endif

static inline int mprotect(void *addr, size_t len, int prot)
{
   if (__ctr_svchax)
   {
      uint32_t currentHandle = 0;
      int r;
      svcDuplicateHandle(&currentHandle, 0xFFFF8001);
      r = svcControlProcessMemory(currentHandle, (uintptr_t)addr, 0,
                                  len, MEMOP_PROT, prot);
      svcCloseHandle(currentHandle);
      if (r < 0) {
         SysPrintf("svcControlProcessMemory failed for %p %u %x: %d\n",
                   addr, len, prot, r);
         return -1;
      }
      return 0;
   }

   SysPrintf("mprotect called without svcControlProcessMemory access!\n");
   return -1;
}

#ifdef __cplusplus
};
#endif

#endif // MMAN_H
Commit	Line	Data
a3c46b7f	1	#ifndef MMAN_H
	2	#define MMAN_H
	3
	4	#ifdef __cplusplus
	5	extern "C" {
	6	#endif
	7
	8	#include <stdlib.h>
a3c46b7f	9	#include <stdint.h>
a3c46b7f	10
4d987004	11	#include <3ds/svc.h>
a3c46b7f	12	#include "3ds_utils.h"
	13
	14	#define PROT_READ 0b001
	15	#define PROT_WRITE 0b010
	16	#define PROT_EXEC 0b100
	17	#define MAP_PRIVATE 2
	18	#define MAP_FIXED 0x10
	19	#define MAP_ANONYMOUS 0x20
	20
	21	#define MAP_FAILED ((void *)-1)
	22
1131a875	23	void SysPrintf(const char *fmt, ...);
	24
	25	#if 0 // not used
a3c46b7f	26	static void* dynarec_cache = NULL;
	27	static void* dynarec_cache_mapping = NULL;
	28
	29	static inline void* mmap(void *addr, size_t len, int prot, int flags, int fd, off_t offset)
	30	{
	31	(void)fd;
	32	(void)offset;
	33
	34	void* addr_out;
	35
	36	if((prot == (PROT_READ \| PROT_WRITE \| PROT_EXEC)) &&
	37	(flags == (MAP_PRIVATE \| MAP_ANONYMOUS)))
	38	{
	39	if(__ctr_svchax)
	40	{
	41	/* this hack works only for pcsx_rearmed */
	42	uint32_t currentHandle;
	43
	44	if (!dynarec_cache) {
	45	dynarec_cache = memalign(0x1000, len);
	46	if (!dynarec_cache)
	47	return MAP_FAILED;
	48	}
	49
	50	svcDuplicateHandle(&currentHandle, 0xFFFF8001);
1131a875	51	svcControlProcessMemory(currentHandle, (uintptr_t)addr, (uintptr_t)dynarec_cache,
a3c46b7f	52	len, MEMOP_MAP, prot);
	53	svcCloseHandle(currentHandle);
	54	dynarec_cache_mapping = addr;
	55	memset(addr, 0, len);
	56	return addr;
	57	}
	58	else
	59	{
	60	printf("tried to mmap RWX pages without svcControlProcessMemory access !\n");
	61	return MAP_FAILED;
	62	}
	63
	64	}
	65
	66	addr_out = memalign(0x1000, len);
	67	if (!addr_out)
	68	return MAP_FAILED;
	69
	70	memset(addr_out, 0, len);
	71	return addr_out;
	72	}
	73
a3c46b7f	74	static inline int munmap(void *addr, size_t len)
	75	{
	76	if((addr == dynarec_cache_mapping) && __ctr_svchax)
	77	{
	78	uint32_t currentHandle;
	79	svcDuplicateHandle(&currentHandle, 0xFFFF8001);
	80	svcControlProcessMemory(currentHandle,
1131a875	81	(uintptr_t)dynarec_cache, (uintptr_t)dynarec_cache_mapping,
a3c46b7f	82	len, MEMOP_UNMAP, 0b111);
	83	svcCloseHandle(currentHandle);
	84	dynarec_cache_mapping = NULL;
	85
	86	}
	87	else
	88	free(addr);
	89
	90	return 0;
	91	}
1131a875	92	#endif
	93
	94	static inline int mprotect(void *addr, size_t len, int prot)
	95	{
	96	if (__ctr_svchax)
	97	{
	98	uint32_t currentHandle = 0;
	99	int r;
	100	svcDuplicateHandle(&currentHandle, 0xFFFF8001);
	101	r = svcControlProcessMemory(currentHandle, (uintptr_t)addr, 0,
	102	len, MEMOP_PROT, prot);
	103	svcCloseHandle(currentHandle);
	104	if (r < 0) {
	105	SysPrintf("svcControlProcessMemory failed for %p %u %x: %d\n",
	106	addr, len, prot, r);
	107	return -1;
	108	}
	109	return 0;
	110	}
	111
	112	SysPrintf("mprotect called without svcControlProcessMemory access!\n");
	113	return -1;
	114	}
a3c46b7f	115
	116	#ifdef __cplusplus
	117	};
	118	#endif
	119
	120	#endif // MMAN_H
	121