[picodrive.git] / cpu / drc / cmn.c

/*
 * PicoDrive
 * Copyright (C) 2009,2010 notaz
 *
 * This work is licensed under the terms of MAME license.
 * See COPYING file in the top-level directory.
 */
#include <stdio.h>

#include <pico/pico_int.h>
#include "cmn.h"

#if defined(__linux__) && (defined(__aarch64__) || defined(__VFP_FP__))
// might be running on a 64k-page kernel
#define PICO_PAGE_ALIGN 65536
#else
#define PICO_PAGE_ALIGN 4096
#endif
u8 ALIGNED(PICO_PAGE_ALIGN) tcache_default[DRC_TCACHE_SIZE];
u8 *tcache;

void drc_cmn_init(void)
{
  int ret;

  tcache = plat_mem_get_for_drc(DRC_TCACHE_SIZE);
  if (tcache == NULL)
    tcache = tcache_default;

  ret = plat_mem_set_exec(tcache, DRC_TCACHE_SIZE);
  elprintf(EL_STATUS, "drc_cmn_init: %p, %zd bytes: %d",
    tcache, DRC_TCACHE_SIZE, ret);

#ifdef __arm__
  if (PicoIn.opt & POPT_EN_DRC)
  {
    static int test_done;
    if (!test_done)
    {
      int *test_out = (void *)tcache;
      int (*testfunc)(void) = (void *)tcache;

      elprintf(EL_STATUS, "testing if we can run recompiled code..");
      *test_out++ = 0xe3a000dd; // mov r0, 0xdd
      *test_out++ = 0xe12fff1e; // bx lr
      cache_flush_d_inval_i(tcache, test_out);

      // we'll usually crash on broken platforms or bad ports,
      // but do a value check too just in case
      ret = testfunc();
      elprintf(EL_STATUS, "test %s.", ret == 0xdd ? "passed" : "failed");
      test_done = 1;
    }
  }
#endif
}

void drc_cmn_cleanup(void)
{
}

// vim:shiftwidth=2:expandtab
Commit	Line	Data
	1	/*
	2	* PicoDrive
	3	* Copyright (C) 2009,2010 notaz
	4	*
	5	* This work is licensed under the terms of MAME license.
	6	* See COPYING file in the top-level directory.
	7	*/
	8	#include <stdio.h>
	9
	10	#include <pico/pico_int.h>
	11	#include "cmn.h"
	12
	13	#if defined(__linux__) && (defined(__aarch64__) \|\| defined(__VFP_FP__))
	14	// might be running on a 64k-page kernel
	15	#define PICO_PAGE_ALIGN 65536
	16	#else
	17	#define PICO_PAGE_ALIGN 4096
	18	#endif
	19	u8 ALIGNED(PICO_PAGE_ALIGN) tcache_default[DRC_TCACHE_SIZE];
	20	u8 *tcache;
	21
	22	void drc_cmn_init(void)
	23	{
	24	int ret;
	25
	26	tcache = plat_mem_get_for_drc(DRC_TCACHE_SIZE);
	27	if (tcache == NULL)
	28	tcache = tcache_default;
	29
	30	ret = plat_mem_set_exec(tcache, DRC_TCACHE_SIZE);
	31	elprintf(EL_STATUS, "drc_cmn_init: %p, %zd bytes: %d",
	32	tcache, DRC_TCACHE_SIZE, ret);
	33
	34	#ifdef __arm__
	35	if (PicoIn.opt & POPT_EN_DRC)
	36	{
	37	static int test_done;
	38	if (!test_done)
	39	{
	40	int test_out = (void )tcache;
	41	int (testfunc)(void) = (void )tcache;
	42
	43	elprintf(EL_STATUS, "testing if we can run recompiled code..");
	44	*test_out++ = 0xe3a000dd; // mov r0, 0xdd
	45	*test_out++ = 0xe12fff1e; // bx lr
	46	cache_flush_d_inval_i(tcache, test_out);
	47
	48	// we'll usually crash on broken platforms or bad ports,
	49	// but do a value check too just in case
	50	ret = testfunc();
	51	elprintf(EL_STATUS, "test %s.", ret == 0xdd ? "passed" : "failed");
	52	test_done = 1;
	53	}
	54	}
	55	#endif
	56	}
	57
	58	void drc_cmn_cleanup(void)
	59	{
	60	}
	61
	62	// vim:shiftwidth=2:expandtab