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Update cache size decoding table with sandpile.org data

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This commit is contained in:
Martin Kroeker
2026-03-10 22:25:48 +01:00
committed by GitHub
parent 55b16e5923
commit 02f5f620de
1 changed files with 131 additions and 8 deletions
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139
cpuid_x86.c
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@@ -489,10 +489,10 @@ int get_cacheinfo(int type, cache_info_t *cacheinfo)
info[12] = BITMASK(edx, 8, 0xff);
info[13] = BITMASK(edx, 16, 0xff);
info[14] = BITMASK(edx, 24, 0xff);
fprintf(stderr,"numcalls needed to retrieve all cache data %d\n",numcalls);
for (i = 0; i < 15; i++) {
switch (info[i]) {
/* This table is from http://www.sandpile.org/ia32/cpuid.htm */
/* This table is from http://www.sandpile.org/x86/cpuid.htm */
case 0x01:
ITB.size = 4;
@@ -539,6 +539,11 @@ int get_cacheinfo(int type, cache_info_t *cacheinfo)
LD1.associative = 2;
LD1.linesize = 32;
break;
case 0x0b:
LITB.size = 4096;
LITB.associative= 4;
LITB.linesize = 4;
break;
case 0x0c:
LD1.size = 16;
LD1.associative = 4;
@@ -569,6 +574,11 @@ int get_cacheinfo(int type, cache_info_t *cacheinfo)
L2.associative = 6;
L2.linesize = 64;
break;
case 0x1d:
L2.size = 128;
L2.associative = 2;
L2.linesize = 64;
break;
case 0x21:
L2.size = 256;
L2.associative = 8;
@@ -584,6 +594,10 @@ int get_cacheinfo(int type, cache_info_t *cacheinfo)
L3.associative = 8;
L3.linesize = 64;
break;
case 0x24:
L2.size = 1024;
L2.associative = 16;
L2.linesize = 64;
case 0x25:
L3.size = 2048;
L3.associative = 8;
@@ -634,6 +648,9 @@ int get_cacheinfo(int type, cache_info_t *cacheinfo)
L2.associative = 4;
L2.linesize = 64;
break;
case 0x40:
// no integrated L2 or L3 cache, old P4/P6
break;
case 0x41:
L2.size = 128;
L2.associative = 4;
@@ -754,10 +771,20 @@ int get_cacheinfo(int type, cache_info_t *cacheinfo)
LDTB.linesize = 16;
break;
case 0x57:
LDTB.size = 4096;
LDTB.associative = 4;
LDTB.linesize = 16;
DTB.size = 4;
DTB.associative = 4;
DTB.linesize = 16;
break;
case 0x59:
DTB.size = 4;
DTB.associative = 0;
DTB.linesize = 16;
break;
case 0x5a:
LDTB.size = 4096;
LDTB.associative = 4;
LDTB.linesize = 32;
break;
case 0x5b:
DTB.size = 4;
DTB.associative = 0;
@@ -790,6 +817,10 @@ int get_cacheinfo(int type, cache_info_t *cacheinfo)
LD1.associative = 8;
LD1.linesize = 64;
break;
case 0x61:
ITB.size = 4096;
ITB.associative = 0;
ITB.linesize = 48;
case 0x63:
DTB.size = 2048;
DTB.associative = 4;
@@ -798,6 +829,10 @@ int get_cacheinfo(int type, cache_info_t *cacheinfo)
LDTB.associative = 4;
LDTB.linesize = 32;
break;
case 0x64:
DTB.size = 4;
DTB.associative = 4;
DTB.linesize = 512;
case 0x66:
LD1.size = 8;
LD1.associative = 4;
@@ -813,6 +848,26 @@ int get_cacheinfo(int type, cache_info_t *cacheinfo)
LD1.associative = 4;
LD1.linesize = 64;
break;
case 0x6a:
DTB.size = 4;
DTB.associative = 8;
DTB.linesize = 64;
break;
case 0x6b:
DTB.size = 4;
DTB.associative = 8;
DTB.linesize = 256;
break;
case 0x6c:
LDTB.size = 4096;
LDTB.associative= 8;
LDTB.linesize = 126;
break;
case 0x6d:
LDTB.size = 1048576;
LDTB.associative= 0;
LDTB.linesize = 16;
break;
case 0x70:
LC1.size = 12;
LC1.associative = 8;
@@ -882,6 +937,11 @@ int get_cacheinfo(int type, cache_info_t *cacheinfo)
L2.associative = 2;
L2.linesize = 64;
break;
case 0x80:
L2.size = 512;
L2.associative = 8;
L2.linesize = 64;
break;
case 0x81:
L2.size = 128;
L2.associative = 8;
@@ -952,6 +1012,11 @@ int get_cacheinfo(int type, cache_info_t *cacheinfo)
L2DTB.associative = 0;
L2DTB.linesize = 96;
break;
case 0xa0:
DTB.size = 4;
DTB.associative = 0;
DTB.linesize = 32;
break;
case 0xb0:
ITB.size = 4;
ITB.associative = 4;
@@ -977,11 +1042,54 @@ int get_cacheinfo(int type, cache_info_t *cacheinfo)
DTB.associative = 4;
DTB.linesize = 256;
break;
case 0xb5:
ITB.size = 4;
ITB.associative = 8;
ITB.linesize = 64;
break;
case 0xb6:
ITB.size = 4;
ITB.associative = 8;
ITB.linesize = 128;
break;
case 0xba:
DTB.size = 4;
DTB.associative = 4;
DTB.linesize = 64;
break;
case 0xc0:
DTB.size = 4;
DTB.associative = 4;
DTB.linesize = 8;
LDTB.size = 4096;
LDTB.associative= 4;
LDTB.linesize = 8;
break;
case 0xc1:
L2.size = 4;
L2.associative = 8;
L2.linesize = 1024;
break;
case 0xc2:
DTB.size = 2048;
DTB.associative= 4;
DTB.linesize = 16;
break;
case 0xc3:
L2.size = 4;
L2.associative = 6;
L2.linesize = 1536;
break;
case 0xc4:
DTB.size = 2048;
DTB.associative= 4;
DTB.linesize = 32;
break;
case 0xca:
L2.size = 4;
L2.associative = 4;
L2.linesize = 512;
break;
case 0xd0:
L3.size = 512;
L3.associative = 4;
@@ -1013,17 +1121,17 @@ int get_cacheinfo(int type, cache_info_t *cacheinfo)
L3.linesize = 64;
break;
case 0xdc:
L3.size = 2048;
L3.size = 1536;
L3.associative = 12;
L3.linesize = 64;
break;
case 0xdd:
L3.size = 4096;
L3.size = 3072;
L3.associative = 12;
L3.linesize = 64;
break;
case 0xde:
L3.size = 8192;
L3.size = 6144;
L3.associative = 12;
L3.linesize = 64;
break;
@@ -1042,6 +1150,21 @@ int get_cacheinfo(int type, cache_info_t *cacheinfo)
L3.associative = 16;
L3.linesize = 64;
break;
case 0xea:
L3.size = 12288;
L3.associative = 24;
L3.linesize = 64;
break;
case 0xeb:
L3.size = 18432;
L3.associative = 24;
L3.linesize = 64;
break;
case 0xec:
L3.size = 24576;
L3.associative = 24;
L3.linesize = 64;
break;
}
}
}