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Add LJ_GC64 mode: 64 bit GC object references.

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Actually NaN tagging with 47 bit pointers and 13+4 bit tags.
This commit is contained in:
Mike Pall
2015-01-03 15:23:58 +01:00
parent 054e6abe37
commit cb481ddc8f
13 changed files with 183 additions and 29 deletions
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12
src/lj_alloc.c
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@@ -77,7 +77,7 @@
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#if LJ_64
#if LJ_64 && !LJ_GC64
/* Undocumented, but hey, that's what we all love so much about Windows. */
typedef long (*PNTAVM)(HANDLE handle, void **addr, ULONG zbits,
@@ -174,8 +174,10 @@ static LJ_AINLINE int CALL_MUNMAP(void *ptr, size_t size)
#endif
#define MMAP_FLAGS (MAP_PRIVATE|MAP_ANONYMOUS)
#if LJ_64
/* 64 bit mode needs special support for allocating memory in the lower 2GB. */
#if LJ_64 && !LJ_GC64
/* 64 bit mode with 32 bit pointers needs special support for allocating
** memory in the lower 2GB.
*/
#if defined(MAP_32BIT)
@@ -258,7 +260,7 @@ static LJ_AINLINE void *CALL_MMAP(size_t size)
#else
/* 32 bit mode is easy. */
/* 32 bit mode and GC64 mode is easy. */
static LJ_AINLINE void *CALL_MMAP(size_t size)
{
int olderr = errno;
@@ -294,7 +296,7 @@ static LJ_AINLINE void *CALL_MREMAP_(void *ptr, size_t osz, size_t nsz,
#define CALL_MREMAP(addr, osz, nsz, mv) CALL_MREMAP_((addr), (osz), (nsz), (mv))
#define CALL_MREMAP_NOMOVE 0
#define CALL_MREMAP_MAYMOVE 1
#if LJ_64
#if LJ_64 && !LJ_GC64
#define CALL_MREMAP_MV CALL_MREMAP_NOMOVE
#else
#define CALL_MREMAP_MV CALL_MREMAP_MAYMOVE