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Fix high/low ram watermark tracking 

Fixes negative sized memset calls and some wrap around bugs. Fixes at
least a couple of games.
This commit is contained in:
David Guillen Fandos 2021-08-28 14:38:32 +02:00
parent 1feab54699
commit d649fe96cb
1 changed files with 29 additions and 69 deletions
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98
cpu_threaded.c
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@ -54,10 +54,10 @@ u8 *ram_translation_ptr = ram_translation_cache;
#endif
/* Note, see stub files for more cache definitions */
u32 iwram_code_min = 0xFFFFFFFF;
u32 iwram_code_max = 0xFFFFFFFF;
u32 ewram_code_min = 0xFFFFFFFF;
u32 ewram_code_max = 0xFFFFFFFF;
u32 iwram_code_min = ~0U;
u32 iwram_code_max = 0U;
u32 ewram_code_min = ~0U;
u32 ewram_code_max = 0U;
u32 *rom_branch_hash[ROM_BRANCH_HASH_SIZE];
@ -3034,18 +3034,10 @@ s32 translate_block_arm(u32 pc, translation_region_type
switch(translation_region)
{
case TRANSLATION_REGION_RAM:
if(pc >= 0x3000000)
{
if((pc < iwram_code_min) || (iwram_code_min == 0xFFFFFFFF))
iwram_code_min = pc;
}
else
if(pc >= 0x2000000)
{
if((pc < ewram_code_min) || (ewram_code_min == 0xFFFFFFFF))
ewram_code_min = pc;
}
if (pc >= 0x3000000)
iwram_code_min = MIN(pc & 0x7FFF, iwram_code_min);
else if (pc >= 0x2000000)
ewram_code_min = MIN(pc & 0x3FFFF, ewram_code_min);
translation_ptr = ram_translation_ptr;
translation_cache_limit =
@ -3181,18 +3173,10 @@ s32 translate_block_arm(u32 pc, translation_region_type
switch(translation_region)
{
case TRANSLATION_REGION_RAM:
if(pc >= 0x3000000)
{
if((pc > iwram_code_max) || (iwram_code_max == 0xFFFFFFFF))
iwram_code_max = pc;
}
else
if(pc >= 0x2000000)
{
if((pc > ewram_code_max) || (ewram_code_max == 0xFFFFFFFF))
ewram_code_max = pc;
}
if (pc >= 0x3000000)
iwram_code_max = MAX(pc & 0x7FFF, iwram_code_max);
else if (pc >= 0x2000000)
ewram_code_max = MAX(pc & 0x3FFFF, ewram_code_max);
ram_translation_ptr = translation_ptr;
break;
@ -3247,18 +3231,10 @@ s32 translate_block_thumb(u32 pc, translation_region_type
switch(translation_region)
{
case TRANSLATION_REGION_RAM:
if(pc >= 0x3000000)
{
if((pc < iwram_code_min) || (iwram_code_min == 0xFFFFFFFF))
iwram_code_min = pc;
}
else
if(pc >= 0x2000000)
{
if((pc < ewram_code_min) || (ewram_code_min == 0xFFFFFFFF))
ewram_code_min = pc;
}
if (pc >= 0x3000000)
iwram_code_min = MIN(pc & 0x7FFF, iwram_code_min);
else if (pc >= 0x2000000)
ewram_code_min = MIN(pc & 0x3FFFF, ewram_code_min);
translation_ptr = ram_translation_ptr;
translation_cache_limit =
@ -3386,18 +3362,10 @@ s32 translate_block_thumb(u32 pc, translation_region_type
switch(translation_region)
{
case TRANSLATION_REGION_RAM:
if(pc >= 0x3000000)
{
if((pc > iwram_code_max) || (iwram_code_max == 0xFFFFFFFF))
iwram_code_max = pc;
}
else
if(pc >= 0x2000000)
{
if((pc > ewram_code_max) || (ewram_code_max == 0xFFFFFFFF))
ewram_code_max = pc;
}
if (pc >= 0x3000000)
iwram_code_max = MAX(pc & 0x7FFF, iwram_code_max);
else if (pc >= 0x2000000)
ewram_code_max = MAX(pc & 0x3FFFF, ewram_code_max);
ram_translation_ptr = translation_ptr;
break;
@ -3432,24 +3400,16 @@ void flush_translation_cache_ram(void)
// Proceed to clean the SMC area if needed
// (also try to memset as little as possible for performance)
if(iwram_code_min != 0xFFFFFFFF)
{
iwram_code_min &= 0x7FFF;
iwram_code_max &= 0x7FFF;
memset(iwram + iwram_code_min, 0, iwram_code_max - iwram_code_min);
}
if(iwram_code_max)
memset(&iwram[iwram_code_min], 0, iwram_code_max - iwram_code_min);
if(ewram_code_min != 0xFFFFFFFF)
{
ewram_code_min &= 0x3FFFF;
ewram_code_max &= 0x3FFFF;
if(ewram_code_max)
memset(&ewram[0x40000 + ewram_code_min], 0, ewram_code_max - ewram_code_min);
}
iwram_code_min = 0xFFFFFFFF;
iwram_code_max = 0xFFFFFFFF;
ewram_code_min = 0xFFFFFFFF;
ewram_code_max = 0xFFFFFFFF;
iwram_code_min = ~0U;
iwram_code_max = 0U;
ewram_code_min = ~0U;
ewram_code_max = 0U;
}
void flush_translation_cache_rom(void)
@ -3465,9 +3425,9 @@ void init_caches(void)
/* Ensure we wipe everything including the SMC mirrors */
flush_translation_cache_rom();
ewram_code_min = 0;
ewram_code_max = 0x3FFFF;
ewram_code_max = 0x40000;
iwram_code_min = 0;
iwram_code_max = 0x7FFF;
iwram_code_max = 0x8000;
flush_translation_cache_ram();
}