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* interp.c (<sys/mman.h>): Include.

Browse source 
(mcalloc): New function / macro.
	(mfree): New macro.
	(sim_size): Use mcalloc and mfree.
This commit is contained in:
Joern Rennecke 2005-09-19 11:29:30 +00:00
parent 5c3dead3ce
commit 6a8492b562
2 changed files with 42 additions and 5 deletions
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7
sim/sh/ChangeLog
View file

@ -1,3 +1,10 @@
2005-09-19 J"orn Rennecke <joern.rennecke@st.com>
* interp.c (<sys/mman.h>): Include.
(mcalloc): New function / macro.
(mfree): New macro.
(sim_size): Use mcalloc and mfree.
2005-08-02 J"orn Rennecke <joern.rennecke@st.com>
* interp.c (strswaplen): Add one for '\0' delimiter.

40
sim/sh/interp.c
View file

@ -24,6 +24,15 @@
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_MMAP
#include <sys/mman.h>
# ifndef MAP_FAILED
# define MAP_FAILED -1
# endif
# if !defined (MAP_ANONYMOUS) && defined (MAP_ANON)
# define MAP_ANONYMOUS MAP_ANON
# endif
#endif
#include "sysdep.h"
#include "bfd.h"
@ -1715,6 +1724,27 @@ static void ppi_insn ();
#include "ppi.c"
/* Provide calloc / free versions that use an anonymous mmap. This can
significantly cut the start-up time when a large simulator memory is
required, because pages are only zeroed on demand. */
#ifdef MAP_ANONYMOUS
void *
mcalloc (size_t nmemb, size_t size)
{
void *page;
if (nmemb != 1)
size *= nmemb;
return mmap (0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS,
-1, 0);
}
#define mfree(start,length) munmap ((start), (length))
#else
#define mcalloc calloc
#define mfree(start,length) free(start)
#endif
/* Set the memory size to the power of two provided. */
void
@ -1722,17 +1752,17 @@ sim_size (power)
int power;
{
saved_state.asregs.msize = 1 << power;
sim_memory_size = power;
if (saved_state.asregs.memory)
{
free (saved_state.asregs.memory);
mfree (saved_state.asregs.memory, saved_state.asregs.msize);
}
saved_state.asregs.msize = 1 << power;
saved_state.asregs.memory =
(unsigned char *) calloc (64, saved_state.asregs.msize / 64);
(unsigned char *) mcalloc (1, saved_state.asregs.msize);
if (!saved_state.asregs.memory)
{
@ -1741,7 +1771,7 @@ sim_size (power)
saved_state.asregs.msize);
saved_state.asregs.msize = 1;
saved_state.asregs.memory = (unsigned char *) calloc (1, 1);
saved_state.asregs.memory = (unsigned char *) mcalloc (1, 1);
}
}