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Implement lazy icache range invalidation. Disable for now until it shows

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a real benefit over only 2%
This commit is contained in:
gbeauche 2003-11-21 14:20:01 +00:00
parent 1af0362296
commit 45df157a5e
3 changed files with 39 additions and 3 deletions
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4
BasiliskII/src/Unix/main_unix.cpp
View File

@ -81,7 +81,7 @@ using std::string;
#include "sigsegv.h"
#if USE_JIT
extern void (*flush_icache)(int); // from compemu_support.cpp
extern void flush_icache_range(uint32 start, uint32 size); // from compemu_support.cpp
#endif
#ifdef ENABLE_MON
@ -773,7 +773,7 @@ void FlushCodeCache(void *start, uint32 size)
{
#if USE_JIT
if (UseJIT)
flush_icache(-1);
flush_icache_range((uintptr)start, size);
#endif
#if !EMULATED_68K && defined(__NetBSD__)
m68k_sync_icache(start, size);

3
BasiliskII/src/uae_cpu/compiler/compemu.h
View File

@ -80,6 +80,9 @@ union cacheline {
#define USE_CHECKSUM_INFO 1
#endif
/* Does flush_icache_range() only check for blocks falling in the requested range? */
#define LAZY_FLUSH_ICACHE_RANGE 0
#define USE_F_ALIAS 1
#define USE_OFFSET 1
#define COMP_DEBUG 1

35
BasiliskII/src/uae_cpu/compiler/compemu_support.cpp
View File

@ -122,7 +122,7 @@ static bool JITDebug = false; // Enable runtime disassemblers through mon?
const bool JITDebug = false; // Don't use JIT debug mode at all
#endif
const uae_u32 MIN_CACHE_SIZE = 2048; // Minimal translation cache size (2048 KB)
const uae_u32 MIN_CACHE_SIZE = 1024; // Minimal translation cache size (1 MB)
static uae_u32 cache_size = 0; // Size of total cache allocated for compiled blocks
static uae_u32 current_cache_size = 0; // Cache grows upwards: how much has been consumed already
static bool lazy_flush = true; // Flag: lazy translation cache invalidation
@ -6299,6 +6299,39 @@ static inline void flush_icache_lazy(int n)
active=NULL;
}
void flush_icache_range(uae_u32 start, uae_u32 length)
{
if (!active)
return;
#if LAZY_FLUSH_ICACHE_RANGE
uae_u8 *start_p = get_real_address(start);
blockinfo *bi = active;
while (bi) {
#if USE_CHECKSUM_INFO
bool invalidate = false;
for (checksum_info *csi = bi->csi; csi && !invalidate; csi = csi->next)
invalidate = (((start_p - csi->start_p) < csi->length) ||
((csi->start_p - start_p) < length));
#else
// Assume system is consistent and would invalidate the right range
const bool invalidate = (bi->pc_p - start_p) < length;
#endif
if (invalidate) {
uae_u32 cl = cacheline(bi->pc_p);
if (bi == cache_tags[cl + 1].bi)
cache_tags[cl].handler = (cpuop_func *)popall_execute_normal;
bi->handler_to_use = (cpuop_func *)popall_execute_normal;
set_dhtu(bi, bi->direct_pen);
bi->status = BI_NEED_RECOMP;
}
bi = bi->next;
}
return;
#endif
flush_icache(-1);
}
static void catastrophe(void)
{
abort();