[v1.04] Always print manufacturing process in nanometers (this indirectly fixes a bug of processes in micrometers being incorrectly reported by 10x

src/arm/midr.c

@@ -289,7 +289,7 @@ void fill_cpu_info_avalanche_blizzard(struct cpuInfo* cpu, uint32_t pcores, uint
   bli->feat = get_features_info();
   bli->topo = malloc(sizeof(struct topology));
   bli->topo->cach = bli->cach;
-  bli->topo->total_cores = pcores;
+  bli->topo->total_cores = ecores;
   bli->freq = malloc(sizeof(struct frequency));
   bli->freq->base = UNKNOWN_DATA;
   bli->freq->max = 2800;
@@ -305,7 +305,7 @@ void fill_cpu_info_avalanche_blizzard(struct cpuInfo* cpu, uint32_t pcores, uint
   ava->feat = get_features_info();
   ava->topo = malloc(sizeof(struct topology));
   ava->topo->cach = ava->cach;
-  ava->topo->total_cores = ecores;
+  ava->topo->total_cores = pcores;
   ava->freq = malloc(sizeof(struct frequency));
   ava->freq->base = UNKNOWN_DATA;
   ava->freq->max = 3500;
@@ -314,70 +314,78 @@ void fill_cpu_info_avalanche_blizzard(struct cpuInfo* cpu, uint32_t pcores, uint
   ava->next_cpu = NULL;
 }
 
-struct cpuInfo* get_cpu_info_mach(struct cpuInfo* cpu) {
-  uint32_t cpu_family = get_sys_info_by_name("hw.cpufamily");
+void fill_cpu_info_everest_sawtooth(struct cpuInfo* cpu, uint32_t pcores, uint32_t ecores) {
+  // 1. Fill SAWTOOTH
+  struct cpuInfo* saw = cpu;
 
+  saw->midr = MIDR_APPLE_M3_SAWTOOTH;
+  saw->arch = get_uarch_from_midr(saw->midr, saw);
+  saw->cach = get_cache_info(saw);
+  saw->feat = get_features_info();
+  saw->topo = malloc(sizeof(struct topology));
+  saw->topo->cach = saw->cach;
+  saw->topo->total_cores = ecores;
+  saw->freq = malloc(sizeof(struct frequency));
+  saw->freq->base = UNKNOWN_DATA;
+  saw->freq->max = 2750;
+  saw->hv = malloc(sizeof(struct hypervisor));
+  saw->hv->present = false;
+  saw->next_cpu = malloc(sizeof(struct cpuInfo));
+
+  // 2. Fill EVEREST
+  struct cpuInfo* eve = saw->next_cpu;
+  eve->midr = MIDR_APPLE_M3_EVEREST;
+  eve->arch = get_uarch_from_midr(eve->midr, eve);
+  eve->cach = get_cache_info(eve);
+  eve->feat = get_features_info();
+  eve->topo = malloc(sizeof(struct topology));
+  eve->topo->cach = eve->cach;
+  eve->topo->total_cores = pcores;
+  eve->freq = malloc(sizeof(struct frequency));
+  eve->freq->base = UNKNOWN_DATA;
+  eve->freq->max = 4050;
+  eve->hv = malloc(sizeof(struct hypervisor));
+  eve->hv->present = false;
+  eve->next_cpu = NULL;
+}
+
+struct cpuInfo* get_cpu_info_mach(struct cpuInfo* cpu) {
+  // https://developer.apple.com/documentation/kernel/1387446-sysctlbyname/determining_system_capabilities
+  uint32_t nperflevels = get_sys_info_by_name("hw.nperflevels");
+
+  if((cpu->num_cpus = nperflevels) != 2) {
+    printBug("Expected to find SoC with 2 perf levels, found: %d", cpu->num_cpus);
+    return NULL;
+  }
+
+  uint32_t pcores = get_sys_info_by_name("hw.perflevel0.physicalcpu");
+  uint32_t ecores = get_sys_info_by_name("hw.perflevel1.physicalcpu");
+  if(ecores <= 0) {
+    printBug("Expected to find a numer of ecores > 0, found: %d", ecores);
+    return NULL;
+  }
+  if(pcores <= 0) {
+    printBug("Expected to find a numer of pcores > 0, found: %d", pcores);
+    return NULL;
+  }
+
+  uint32_t cpu_family = get_sys_info_by_name("hw.cpufamily");
   // Manually fill the cpuInfo assuming that
-  // the CPU is an Apple M1/M2
+  // the CPU is an Apple SoC
   if(cpu_family == CPUFAMILY_ARM_FIRESTORM_ICESTORM) {
-    cpu->num_cpus = 2;
-    // Now detect the M1 version
-    uint32_t cpu_subfamily = get_sys_info_by_name("hw.cpusubfamily");
-    if(cpu_subfamily == CPUSUBFAMILY_ARM_HG) {
-      // Apple M1
-      fill_cpu_info_firestorm_icestorm(cpu, 4, 4);
-    }
-    else if(cpu_subfamily == CPUSUBFAMILY_ARM_HS || cpu_subfamily == CPUSUBFAMILY_ARM_HC_HD) {
-      // Apple M1 Pro/Max/Ultra. Detect number of cores
-      uint32_t physicalcpu = get_sys_info_by_name("hw.physicalcpu");
-      if(physicalcpu == 20) {
-        // M1 Ultra
-        fill_cpu_info_firestorm_icestorm(cpu, 16, 4);
-      }
-      else if(physicalcpu == 8 || physicalcpu == 10) {
-        // M1 Pro/Max
-        fill_cpu_info_firestorm_icestorm(cpu, physicalcpu-2, 2);
-      }
-      else {
-        printBug("Found invalid physical cpu number: %d", physicalcpu);
-        return NULL;
-      }
-    }
-    else {
-      printBug("Found invalid cpu_subfamily: 0x%.8X", cpu_subfamily);
-      return NULL;
-    }
+    fill_cpu_info_firestorm_icestorm(cpu, pcores, ecores);
     cpu->soc = get_soc();
     cpu->peak_performance = get_peak_performance(cpu);
   }
   else if(cpu_family == CPUFAMILY_ARM_AVALANCHE_BLIZZARD) {
-    cpu->num_cpus = 2;
-    // Now detect the M2 version
-    uint32_t cpu_subfamily = get_sys_info_by_name("hw.cpusubfamily");
-    if(cpu_subfamily == CPUSUBFAMILY_ARM_HG) {
-      // Apple M2
-      fill_cpu_info_avalanche_blizzard(cpu, 4, 4);
-    }
-    else if(cpu_subfamily == CPUSUBFAMILY_ARM_HS) {
-      // Apple M2 Pro/Max/Ultra. Detect number of cores
-      uint32_t physicalcpu = get_sys_info_by_name("hw.physicalcpu");
-      if(physicalcpu == 24) {
-        // M2 Ultra
-        fill_cpu_info_avalanche_blizzard(cpu, 16, 8);
-      }
-      else if(physicalcpu == 10 || physicalcpu == 12) {
-        // M2 Pro/Max
-        fill_cpu_info_avalanche_blizzard(cpu, physicalcpu-4, 4);
-      }
-      else {
-        printBug("Found invalid physical cpu number: %d", physicalcpu);
-        return NULL;
-      }
-    }
-    else {
-      printBug("Found invalid cpu_subfamily: 0x%.8X", cpu_subfamily);
-      return NULL;
+    fill_cpu_info_avalanche_blizzard(cpu, pcores, ecores);
+    cpu->soc = get_soc();
+    cpu->peak_performance = get_peak_performance(cpu);
   }
+  else if(cpu_family == CPUFAMILY_ARM_EVEREST_SAWTOOTH ||
+          cpu_family == CPUFAMILY_ARM_EVEREST_SAWTOOTH_PRO ||
+          cpu_family == CPUFAMILY_ARM_EVEREST_SAWTOOTH_MAX) {
+    fill_cpu_info_everest_sawtooth(cpu, pcores, ecores);
     cpu->soc = get_soc();
     cpu->peak_performance = get_peak_performance(cpu);
   }
@@ -467,6 +475,15 @@ void print_debug(struct cpuInfo* cpu) {
       printf("%ld MHz\n", freq);
     }
   }
+
+  #if defined(__APPLE__) || defined(__MACH__)
+    printf("hw.cpufamily: 0x%.8X\n", get_sys_info_by_name("hw.cpufamily"));
+    printf("hw.cpusubfamily: 0x%.8X\n", get_sys_info_by_name("hw.cpusubfamily"));
+    printf("hw.nperflevels: %d\n", get_sys_info_by_name("hw.nperflevels"));
+    printf("hw.physicalcpu: %d\n", get_sys_info_by_name("hw.physicalcpu"));
+    printf("hw.perflevel0.physicalcpu: %d\n", get_sys_info_by_name("hw.perflevel0.physicalcpu"));
+    printf("hw.perflevel1.physicalcpu: %d\n", get_sys_info_by_name("hw.perflevel1.physicalcpu"));
+  #endif
 }
 
 void free_topo_struct(struct topology* topo) {

src/arm/soc.c

@@ -734,6 +734,7 @@ bool get_rk_soc_from_efuse(struct system_on_chip* soc, char* efuse) {
   rkToSoC socFromRK[] = {
     // TODO: Add RK2XXX
     // RK3XXX
+    // Reverse order
     {0x2388, {SOC_ROCKCHIP_3288,  SOC_VENDOR_ROCKCHIP, 28, "RK3288",  NULL} },
     {0x2392, {SOC_ROCKCHIP_3229,  SOC_VENDOR_ROCKCHIP, 28, "RK3229",  NULL} }, // https://gadgetversus.com/processor/rockchip-rk3229-vs-rockchip-rk3128/
     {0x3380, {SOC_ROCKCHIP_3308,  SOC_VENDOR_ROCKCHIP, 28, "RK3308",  NULL} }, // https://en.t-firefly.com/product/rocrk3308cc?theme=pc
@@ -742,10 +743,12 @@ bool get_rk_soc_from_efuse(struct system_on_chip* soc, char* efuse) {
     {0x3382, {SOC_ROCKCHIP_3328,  SOC_VENDOR_ROCKCHIP, 28, "RK3328",  NULL} },
     {0x3386, {SOC_ROCKCHIP_3368,  SOC_VENDOR_ROCKCHIP, 28, "RK3368",  NULL} },
     {0x3399, {SOC_ROCKCHIP_3399,  SOC_VENDOR_ROCKCHIP, 28, "RK3399",  NULL} },
-    {0x5366, {SOC_ROCKCHIP_3566,  SOC_VENDOR_ROCKCHIP, 22, "RK3566",  NULL} },
-    {0x5386, {SOC_ROCKCHIP_3568,  SOC_VENDOR_ROCKCHIP, 22, "RK3568",  NULL} },
-    {0x5388, {SOC_ROCKCHIP_3588,  SOC_VENDOR_ROCKCHIP,  8, "RK3588",  NULL} },
-    {0x3588, {SOC_ROCKCHIP_3588S, SOC_VENDOR_ROCKCHIP,  8, "RK3588S", NULL} }, // https://github.com/Dr-Noob/cpufetch/issues/188
+    // Normal Order (https://github.com/Dr-Noob/cpufetch/issues/209)
+    {0x3528, {SOC_ROCKCHIP_3528,  SOC_VENDOR_ROCKCHIP, 28, "RK3528",  NULL} },
+    {0x3562, {SOC_ROCKCHIP_3562,  SOC_VENDOR_ROCKCHIP, 22, "RK3562",  NULL} },
+    {0x3566, {SOC_ROCKCHIP_3566,  SOC_VENDOR_ROCKCHIP, 22, "RK3566",  NULL} },
+    {0x3568, {SOC_ROCKCHIP_3568,  SOC_VENDOR_ROCKCHIP, 22, "RK3568",  NULL} },
+    {0x3588, {SOC_ROCKCHIP_3588,  SOC_VENDOR_ROCKCHIP,  8, "RK3588",  NULL} }, // No known way to distingish between S version: https://github.com/Dr-Noob/cpufetch/issues/188,209
     // Unknown
     {0x0000, {UNKNOWN,            SOC_VENDOR_UNKNOWN,   -1,       "", NULL} }
   };
@@ -886,6 +889,24 @@ struct system_on_chip* guess_soc_apple(struct system_on_chip* soc) {
       soc->soc_vendor = SOC_VENDOR_UNKNOWN;
     }
   }
+  else if(cpu_family == CPUFAMILY_ARM_EVEREST_SAWTOOTH ||
+          cpu_family == CPUFAMILY_ARM_EVEREST_SAWTOOTH_PRO ||
+          cpu_family == CPUFAMILY_ARM_EVEREST_SAWTOOTH_MAX) {
+    // Check M3 version
+    if(cpu_family == CPUFAMILY_ARM_EVEREST_SAWTOOTH) {
+      fill_soc(soc, "M3", SOC_APPLE_M3, 3);
+    }
+    else if(cpu_family == CPUFAMILY_ARM_EVEREST_SAWTOOTH_PRO) {
+      fill_soc(soc, "M3 Pro", SOC_APPLE_M3_PRO, 3);
+    }
+    else if(cpu_family == CPUFAMILY_ARM_EVEREST_SAWTOOTH_MAX) {
+      fill_soc(soc, "M3 Max", SOC_APPLE_M3_MAX, 3);
+    }
+    else {
+      printBug("Found invalid cpu_family: 0x%.8X", cpu_family);
+      soc->soc_vendor = SOC_VENDOR_UNKNOWN;
+    }
+  }
   else {
     printBug("Found invalid cpu_family: 0x%.8X", cpu_family);
     soc->soc_vendor = SOC_VENDOR_UNKNOWN;

src/arm/socs.h

@@ -309,6 +309,9 @@ enum {
   SOC_APPLE_M2_PRO,
   SOC_APPLE_M2_MAX,
   SOC_APPLE_M2_ULTRA,
+  SOC_APPLE_M3,
+  SOC_APPLE_M3_PRO,
+  SOC_APPLE_M3_MAX,
   // ALLWINNER
   SOC_ALLWINNER_A10,
   SOC_ALLWINNER_A13,
@@ -346,10 +349,11 @@ enum {
   SOC_ROCKCHIP_3328,
   SOC_ROCKCHIP_3368,
   SOC_ROCKCHIP_3399,
+  SOC_ROCKCHIP_3528,
+  SOC_ROCKCHIP_3562,
   SOC_ROCKCHIP_3566,
   SOC_ROCKCHIP_3568,
   SOC_ROCKCHIP_3588,
-  SOC_ROCKCHIP_3588S,
   // GOOGLE
   SOC_GOOGLE_TENSOR,
   SOC_GOOGLE_TENSOR_G2,
@@ -364,9 +368,9 @@ inline static VENDOR get_soc_vendor_from_soc(SOC soc) {
   else if(soc >= SOC_EXYNOS_3475 && soc <= SOC_EXYNOS_880) return SOC_VENDOR_EXYNOS;
   else if(soc >= SOC_MTK_MT6893 && soc <= SOC_MTK_MT8783) return SOC_VENDOR_MEDIATEK;
   else if(soc >= SOC_SNAPD_QSD8650 && soc <= SOC_SNAPD_SM8450) return SOC_VENDOR_SNAPDRAGON;
-  else if(soc >= SOC_APPLE_M1 && soc <= SOC_APPLE_M2_ULTRA) return SOC_VENDOR_APPLE;
+  else if(soc >= SOC_APPLE_M1 && soc <= SOC_APPLE_M3_MAX) return SOC_VENDOR_APPLE;
   else if(soc >= SOC_ALLWINNER_A10 && soc <= SOC_ALLWINNER_R328) return SOC_VENDOR_ALLWINNER;
-  else if(soc >= SOC_ROCKCHIP_3288 && soc <= SOC_ROCKCHIP_3588S) return SOC_VENDOR_ROCKCHIP;
+  else if(soc >= SOC_ROCKCHIP_3288 && soc <= SOC_ROCKCHIP_3588) return SOC_VENDOR_ROCKCHIP;
   else if(soc >= SOC_GOOGLE_TENSOR && soc <= SOC_GOOGLE_TENSOR_G3) return SOC_VENDOR_GOOGLE;
   return SOC_VENDOR_UNKNOWN;
 }

src/arm/sysctl.h

@@ -8,6 +8,9 @@
 // APPLE_CPU_PART_M2_BLIZZARD=0x30,M2_AVALANCHE=0x31
 #define MIDR_APPLE_M2_BLIZZARD  0x610F0300
 #define MIDR_APPLE_M2_AVALANCHE 0x610F0310
+// https://github.com/AsahiLinux/m1n1/blob/main/src/chickens.c
+#define MIDR_APPLE_M3_SAWTOOTH  0x610F0480
+#define MIDR_APPLE_M3_EVEREST   0x610F0490
 
 // M1 / A14
 #ifndef CPUFAMILY_ARM_FIRESTORM_ICESTORM
@@ -17,6 +20,12 @@
 #ifndef CPUFAMILY_ARM_AVALANCHE_BLIZZARD
   #define CPUFAMILY_ARM_AVALANCHE_BLIZZARD 0xDA33D83D
 #endif
+// M3 / A16 / A17
+// https://ratfactor.com/zig/stdlib-browseable2/c/darwin.zig.html
+// https://github.com/Dr-Noob/cpufetch/issues/210
+#define CPUFAMILY_ARM_EVEREST_SAWTOOTH     0x8765EDEA
+#define CPUFAMILY_ARM_EVEREST_SAWTOOTH_PRO 0x5F4DEA93
+#define CPUFAMILY_ARM_EVEREST_SAWTOOTH_MAX 0x72015832
 
 // For detecting different M1 types
 // NOTE: Could also be achieved detecting different

src/arm/uarch.c

@@ -105,6 +105,8 @@ enum {
   UARCH_FIRESTORM,  // Apple M1 processor (big cores).
   UARCH_BLIZZARD,   // Apple M2 processor (little cores).
   UARCH_AVALANCHE,  // Apple M2 processor (big cores).
+  UARCH_SAWTOOTH,   // Apple M3 processor (little cores).
+  UARCH_EVEREST,    // Apple M3 processor (big cores).
   // CAVIUM
   UARCH_THUNDERX,   // Cavium ThunderX
   UARCH_THUNDERX2,  // Cavium ThunderX2 (originally Broadcom Vulkan).
@@ -220,6 +222,7 @@ void fill_uarch(struct uarch* arch, struct cpuInfo* cpu, char* str, MICROARCH u,
  * Other sources:
  * - https://elixir.bootlin.com/linux/latest/source/arch/arm64/include/asm/cputype.h
  * - https://elixir.bootlin.com/linux/latest/source/arch/arm/include/asm/cputype.h
+ * - https://github.com/AsahiLinux/m1n1/blob/main/src/chickens.c
  */
 struct uarch* get_uarch_from_midr(uint32_t midr, struct cpuInfo* cpu) {
   struct uarch* arch = emalloc(sizeof(struct uarch));
@@ -327,6 +330,8 @@ struct uarch* get_uarch_from_midr(uint32_t midr, struct cpuInfo* cpu) {
   CHECK_UARCH(arch, cpu, 'a', 0x023, NA, NA, "Firestorm",             UARCH_FIRESTORM,    CPU_VENDOR_APPLE)
   CHECK_UARCH(arch, cpu, 'a', 0x030, NA, NA, "Blizzard",              UARCH_BLIZZARD,     CPU_VENDOR_APPLE)
   CHECK_UARCH(arch, cpu, 'a', 0x031, NA, NA, "Avalanche",             UARCH_AVALANCHE,    CPU_VENDOR_APPLE)
+  CHECK_UARCH(arch, cpu, 'a', 0x048, NA, NA, "Sawtooth",              UARCH_SAWTOOTH,     CPU_VENDOR_APPLE)
+  CHECK_UARCH(arch, cpu, 'a', 0x049, NA, NA, "Everest",               UARCH_EVEREST,      CPU_VENDOR_APPLE)
 
   CHECK_UARCH(arch, cpu, 'V', 0x581, NA, NA, "PJ4",                   UARCH_PJ4,          CPU_VENDOR_MARVELL)
   CHECK_UARCH(arch, cpu, 'V', 0x584, NA, NA, "PJ4B-MP",               UARCH_PJ4,          CPU_VENDOR_MARVELL)
@@ -387,6 +392,7 @@ int get_number_of_vpus(struct cpuInfo* cpu) {
   MICROARCH ua = cpu->arch->uarch;
 
   switch(ua) {
+    case UARCH_EVEREST:     // Just a guess, needs confirmation.
     case UARCH_FIRESTORM:   // [https://dougallj.github.io/applecpu/firestorm-simd.html]
     case UARCH_AVALANCHE:   // [https://en.wikipedia.org/wiki/Comparison_of_ARM_processors]
     case UARCH_CORTEX_X1:   // [https://www.anandtech.com/show/15813/arm-cortex-a78-cortex-x1-cpu-ip-diverging/3]
@@ -394,6 +400,7 @@ int get_number_of_vpus(struct cpuInfo* cpu) {
     case UARCH_CORTEX_X3:   // [https://www.hwcooling.net/en/cortex-x3-the-new-fastest-arm-core-architecture-analysis: "The FPU and SIMD unit of the core still has four pipelines"]
     case UARCH_NEOVERSE_V1: // [https://en.wikichip.org/wiki/arm_holdings/microarchitectures/neoverse_v1]
       return 4;
+    case UARCH_SAWTOOTH:    // Needs confirmation, rn this is the best we know: https://mastodon.social/@dougall/111118317031041336
     case UARCH_EXYNOS_M3:   // [https://www.anandtech.com/show/12361/samsung-exynos-m3-architecture]
     case UARCH_EXYNOS_M4:   // [https://en.wikichip.org/wiki/samsung/microarchitectures/m4#Block_Diagram]
     case UARCH_EXYNOS_M5:   // [https://en.wikichip.org/wiki/samsung/microarchitectures/m5]

src/common/cpu.h

@@ -38,6 +38,7 @@ enum {
   HV_VENDOR_PARALLELS,
   HV_VENDOR_PHYP,
   HV_VENDOR_BHYVE,
+  HV_VENDOR_APPLEVZ,
   HV_VENDOR_INVALID
 };
 

src/common/global.c

@@ -21,7 +21,7 @@
 #endif
 
 #ifdef ARCH_X86
-  static const char* ARCH_STR = "x86_64 build";
+  static const char* ARCH_STR = "x86 / x86_64 build";
   #include "../x86/cpuid.h"
 #elif ARCH_PPC
   static const char* ARCH_STR = "PowerPC build";

src/ppc/ppc.c

@@ -20,6 +20,7 @@ static char *hv_vendors_name[] = {
   [HV_VENDOR_PARALLELS] = "Parallels",
   [HV_VENDOR_PHYP]      = "pHyp",
   [HV_VENDOR_BHYVE]     = "bhyve",
+  [HV_VENDOR_APPLEVZ]   = "Apple VZ",
   [HV_VENDOR_INVALID]   = STRING_UNKNOWN
 };
 

src/ppc/uarch.c

@@ -280,9 +280,6 @@ char* get_str_process(struct cpuInfo* cpu) {
   if(process == UNK) {
     snprintf(str, strlen(STRING_UNKNOWN)+1, STRING_UNKNOWN);
   }
-  else if(process > 100) {
-    sprintf(str, "%.2fum", (double)process/100);
-  }
   else if(process > 0){
     sprintf(str, "%dnm", process);
   }

src/x86/cpuid.c

@@ -30,8 +30,9 @@ static const char *hv_vendors_string[] = {
   [HV_VENDOR_VMWARE]    = "VMwareVMware",
   [HV_VENDOR_XEN]       = "XenVMMXenVMM",
   [HV_VENDOR_PARALLELS] = "lrpepyh vr",
+  [HV_VENDOR_PHYP]      = NULL,
   [HV_VENDOR_BHYVE]     = "bhyve bhyve ",
-  [HV_VENDOR_PHYP]      = NULL
+  [HV_VENDOR_APPLEVZ]   = "Apple VZ"
 };
 
 static char *hv_vendors_name[] = {
@@ -43,6 +44,7 @@ static char *hv_vendors_name[] = {
   [HV_VENDOR_PARALLELS] = "Parallels",
   [HV_VENDOR_PHYP]      = "pHyp",
   [HV_VENDOR_BHYVE]     = "bhyve",
+  [HV_VENDOR_APPLEVZ]   = "Apple VZ",
   [HV_VENDOR_INVALID]   = STRING_UNKNOWN
 };
 
@@ -284,7 +286,7 @@ struct hypervisor* get_hp_info(bool hv_present) {
 
     if(!found) {
       hv->hv_vendor = HV_VENDOR_INVALID;
-      printBug("Unknown hypervisor vendor: %s", name);
+      printBug("Unknown hypervisor vendor: '%s'", name);
     }
   }
 
@@ -484,9 +486,8 @@ struct cpuInfo* get_cpu_info(void) {
     cpu->cpu_name = get_str_cpu_name_internal();
   }
   else {
-    cpu->cpu_name = emalloc(sizeof(char) * (strlen(STRING_UNKNOWN) + 1));
-    strcpy(cpu->cpu_name, STRING_UNKNOWN);
-    printWarn("Can't read cpu name from cpuid (needed extended level is 0x%.8X, max is 0x%.8X)", 0x80000004, cpu->maxExtendedLevels);
+    cpu->cpu_name = NULL;
+    printWarn("Can't read CPU name from cpuid (needed extended level is 0x%.8X, max is 0x%.8X)", 0x80000004, cpu->maxExtendedLevels);
   }
 
   cpu->topology_extensions = false;
@@ -536,12 +537,17 @@ struct cpuInfo* get_cpu_info(void) {
     ptr->first_core_id = first_core;
     ptr->feat = get_features_info(ptr);
 
-    // If any field of the struct is NULL,
-    // return inmideately, as further functions
-    // require valid fields (cach, topo, etc)
     ptr->arch = get_cpu_uarch(ptr);
     ptr->freq = get_frequency_info(ptr);
 
+    if (cpu->cpu_name == NULL && ptr == cpu) {
+      // If we couldnt read CPU name from cpuid, infer it now
+      cpu->cpu_name = infer_cpu_name_from_uarch(cpu->arch);
+    }
+
+    // If any field of the struct is NULL,
+    // return early, as next functions
+    // require non NULL fields in cach and topo
     ptr->cach = get_cache_info(ptr);
     if(ptr->cach == NULL) return cpu;
 
@@ -1170,9 +1176,7 @@ void print_raw(struct cpuInfo* cpu) {
 }
 
 void free_topo_struct(struct topology* topo) {
-  if(topo->apic->cache_select_mask != NULL)
   free(topo->apic->cache_select_mask);
-  if(topo->apic->cache_id_apic != NULL)
   free(topo->apic->cache_id_apic);
   free(topo->apic);
   free(topo);

src/x86/uarch.c

@@ -48,7 +48,9 @@ enum {
   UARCH_UNKNOWN,
   // INTEL //
   UARCH_P5,
-  UARCH_P6,
+  UARCH_P5_MMX,
+  UARCH_P6_PENTIUM_II,
+  UARCH_P6_PENTIUM_III,
   UARCH_DOTHAN,
   UARCH_YONAH,
   UARCH_MEROM,
@@ -145,31 +147,31 @@ struct uarch* get_uarch_from_cpuid_intel(uint32_t ef, uint32_t f, uint32_t em, u
   // EM: Extended Model                                                              //
   // M: Model                                                                        //
   // S: Stepping                                                                     //
-  // ----------------------------------------------------------------------------- //
+  // ------------------------------------------------------------------------------- //
   //                EF  F  EM   M   S                                                //
   UARCH_START
   CHECK_UARCH(arch, 0,  5,  0,  0, NA, "P5",                UARCH_P5,              800)
   CHECK_UARCH(arch, 0,  5,  0,  1, NA, "P5",                UARCH_P5,              800)
   CHECK_UARCH(arch, 0,  5,  0,  2, NA, "P5",                UARCH_P5,              UNK)
   CHECK_UARCH(arch, 0,  5,  0,  3, NA, "P5",                UARCH_P5,              600)
-  CHECK_UARCH(arch, 0,  5,  0,  4, NA, "P5 MMX",          UARCH_P5,              UNK)
-  CHECK_UARCH(arch, 0,  5,  0,  7, NA, "P5 MMX",          UARCH_P5,              UNK)
-  CHECK_UARCH(arch, 0,  5,  0,  8, NA, "P5 MMX",          UARCH_P5,              250)
+  CHECK_UARCH(arch, 0,  5,  0,  4, NA, "P5 (MMX)",          UARCH_P5_MMX,          UNK)
+  CHECK_UARCH(arch, 0,  5,  0,  7, NA, "P5 (MMX)",          UARCH_P5_MMX,          UNK)
+  CHECK_UARCH(arch, 0,  5,  0,  8, NA, "P5 (MMX)",          UARCH_P5_MMX,          250)
   CHECK_UARCH(arch, 0,  5,  0,  9,  0, "Lakemont",          UARCH_LAKEMONT,         32)
-  CHECK_UARCH(arch, 0,  5,  0,  9, NA, "P5 MMX",          UARCH_P5,              UNK)
+  CHECK_UARCH(arch, 0,  5,  0,  9, NA, "P5 (MMX)",          UARCH_P5_MMX,          UNK)
   CHECK_UARCH(arch, 0,  5,  0, 10,  0, "Lakemont",          UARCH_LAKEMONT,         32)
-  CHECK_UARCH(arch, 0,  6,  0,  0, NA, "P6 Pentium II",   UARCH_P6,              UNK)
-  CHECK_UARCH(arch, 0,  6,  0,  1, NA, "P6 Pentium II",   UARCH_P6,              UNK) // process depends on core
-  CHECK_UARCH(arch, 0,  6,  0,  2, NA, "P6 Pentium II",   UARCH_P6,              UNK)
-  CHECK_UARCH(arch, 0,  6,  0,  3, NA, "P6 Pentium II",   UARCH_P6,              350)
-  CHECK_UARCH(arch, 0,  6,  0,  4, NA, "P6 Pentium II",   UARCH_P6,              UNK)
-  CHECK_UARCH(arch, 0,  6,  0,  5, NA, "P6 Pentium II",   UARCH_P6,              250)
-  CHECK_UARCH(arch, 0,  6,  0,  6, NA, "P6 Pentium II",   UARCH_P6,              UNK)
-  CHECK_UARCH(arch, 0,  6,  0,  7, NA, "P6 Pentium III",  UARCH_P6,              250)
-  CHECK_UARCH(arch, 0,  6,  0,  8, NA, "P6 Pentium III",  UARCH_P6,              180)
-  CHECK_UARCH(arch, 0,  6,  0,  9, NA, "P6 Pentium M",    UARCH_P6,              130)
-  CHECK_UARCH(arch, 0,  6,  0, 10, NA, "P6 Pentium III",  UARCH_P6,              180)
-  CHECK_UARCH(arch, 0,  6,  0, 11, NA, "P6 Pentium III",  UARCH_P6,              130)
+  CHECK_UARCH(arch, 0,  6,  0,  0, NA, "P6 (Pentium II)",   UARCH_P6_PENTIUM_II,   UNK)
+  CHECK_UARCH(arch, 0,  6,  0,  1, NA, "P6 (Pentium II)",   UARCH_P6_PENTIUM_II,   UNK) // process depends on core
+  CHECK_UARCH(arch, 0,  6,  0,  2, NA, "P6 (Pentium II)",   UARCH_P6_PENTIUM_II,   UNK)
+  CHECK_UARCH(arch, 0,  6,  0,  3, NA, "P6 (Klamath)",      UARCH_P6_PENTIUM_II,   350) // http://instlatx64.atw.hu.
+  CHECK_UARCH(arch, 0,  6,  0,  4, NA, "P6 (Pentium II)",   UARCH_P6_PENTIUM_II,   UNK)
+  CHECK_UARCH(arch, 0,  6,  0,  5, NA, "P6 (Deschutes)",    UARCH_P6_PENTIUM_II,   250) // http://instlatx64.atw.hu.
+  CHECK_UARCH(arch, 0,  6,  0,  6, NA, "P6 (Dixon)",        UARCH_P6_PENTIUM_II,   UNK) // http://instlatx64.atw.hu.
+  CHECK_UARCH(arch, 0,  6,  0,  7, NA, "P6 (Katmai)",       UARCH_P6_PENTIUM_III,  250) // Core names from: https://en.wikichip.org/wiki/intel/cpuid. NOTE: Xeon core names are different! https://www.techpowerup.com/cpu-specs/?generation=Intel+Pentium+III+Xeon
+  CHECK_UARCH(arch, 0,  6,  0,  8, NA, "P6 (Coppermine)",   UARCH_P6_PENTIUM_III,  180) // Also: https://en.wikipedia.org/wiki/Pentium_III
+  CHECK_UARCH(arch, 0,  6,  0,  9, NA, "P6 (Pentium M)",    UARCH_P6_PENTIUM_III,  130)
+  CHECK_UARCH(arch, 0,  6,  0, 10, NA, "P6 (Coppermine T)", UARCH_P6_PENTIUM_III,  180)
+  CHECK_UARCH(arch, 0,  6,  0, 11, NA, "P6 (Tualatin)",     UARCH_P6_PENTIUM_III,  130)
   CHECK_UARCH(arch, 0,  6,  0, 13, NA, "Dothan",            UARCH_DOTHAN,          UNK)  // process depends on core
   CHECK_UARCH(arch, 0,  6,  0, 14, NA, "Yonah",             UARCH_YONAH,            65)
   CHECK_UARCH(arch, 0,  6,  0, 15, NA, "Merom",             UARCH_MEROM,            65)
@@ -392,11 +394,16 @@ struct uarch* get_uarch_from_cpuid_amd(uint32_t ef, uint32_t f, uint32_t em, uin
 
 struct uarch* get_uarch_from_cpuid(struct cpuInfo* cpu, uint32_t dump, uint32_t ef, uint32_t f, uint32_t em, uint32_t m, int s) {
   if(cpu->cpu_vendor == CPU_VENDOR_INTEL) {
+    struct uarch* arch = emalloc(sizeof(struct uarch));
     if(dump == 0x000806E9) {
+      if (cpu->cpu_name == NULL) {
+        printErr("Unable to find uarch without CPU name");
+        fill_uarch(arch, STRING_UNKNOWN, UARCH_UNKNOWN, UNK);
+        return arch;
+      }
+
       // It is not possible to determine uarch only from CPUID dump (can be Kaby Lake or Amber Lake)
       // See issue https://github.com/Dr-Noob/cpufetch/issues/122
-      struct uarch* arch = emalloc(sizeof(struct uarch));
-
       if(strstr(cpu->cpu_name, "Y") != NULL) {
         fill_uarch(arch, "Amber Lake", UARCH_AMBER_LAKE, 14);
       }
@@ -407,10 +414,14 @@ struct uarch* get_uarch_from_cpuid(struct cpuInfo* cpu, uint32_t dump, uint32_t
       return arch;
     }
     else if (dump == 0x000806EA) {
+      if (cpu->cpu_name == NULL) {
+        printErr("Unable to find uarch without CPU name");
+        fill_uarch(arch, STRING_UNKNOWN, UARCH_UNKNOWN, UNK);
+        return arch;
+      }
+
       // It is not possible to determine uarch only from CPUID dump (can be Kaby Lake R or Coffee Lake U)
       // See issue https://github.com/Dr-Noob/cpufetch/issues/149
-      struct uarch* arch = emalloc(sizeof(struct uarch));
-
       if(strstr(cpu->cpu_name, "i5-8250U") != NULL ||
          strstr(cpu->cpu_name, "i5-8350U") != NULL ||
          strstr(cpu->cpu_name, "i7-8550U") != NULL ||
@@ -429,6 +440,41 @@ struct uarch* get_uarch_from_cpuid(struct cpuInfo* cpu, uint32_t dump, uint32_t
     return get_uarch_from_cpuid_amd(ef, f, em, m, s);
 }
 
+// If we cannot get the CPU name from CPUID, try to infer it from uarch
+char* infer_cpu_name_from_uarch(struct uarch* arch) {
+  char* cpu_name = NULL;
+  if (arch == NULL) {
+    printErr("infer_cpu_name_from_uarch: Unable to find CPU name");
+    cpu_name = ecalloc(strlen(STRING_UNKNOWN) + 1, sizeof(char));
+    strcpy(cpu_name, STRING_UNKNOWN);
+    return cpu_name;
+  }
+
+  char *str = NULL;
+
+  if (arch->uarch == UARCH_P5)
+    str = "Intel Pentium";
+  else if (arch->uarch == UARCH_P5_MMX)
+    str = "Intel Pentium MMX";
+  else if (arch->uarch == UARCH_P6_PENTIUM_II)
+    str = "Intel Pentium II";
+  else if (arch->uarch == UARCH_P6_PENTIUM_III)
+    str = "Intel Pentium III";
+  else
+    printErr("Unable to find name from uarch: %d", arch->uarch);
+
+  if (str == NULL) {
+    cpu_name = ecalloc(strlen(STRING_UNKNOWN) + 1, sizeof(char));
+    strcpy(cpu_name, STRING_UNKNOWN);
+  }
+  else {
+    cpu_name = ecalloc(strlen(str) + 1, sizeof(char));
+    strcpy(cpu_name, str);
+  }
+
+  return cpu_name;
+}
+
 bool vpus_are_AVX512(struct cpuInfo* cpu) {
   return cpu->arch->uarch != UARCH_ICE_LAKE &&
          cpu->arch->uarch != UARCH_TIGER_LAKE &&
@@ -499,9 +545,6 @@ char* get_str_process(struct cpuInfo* cpu) {
   if(process == UNK) {
     snprintf(str, strlen(STRING_UNKNOWN)+1, STRING_UNKNOWN);
   }
-  else if(process > 100) {
-    sprintf(str, "%.2fum", (double)process/100);
-  }
   else if(process > 0){
     sprintf(str, "%dnm", process);
   }

src/x86/uarch.h

@@ -8,6 +8,7 @@
 struct uarch;
 
 struct uarch* get_uarch_from_cpuid(struct cpuInfo* cpu, uint32_t dump, uint32_t ef, uint32_t f, uint32_t em, uint32_t m, int s);
+char* infer_cpu_name_from_uarch(struct uarch* arch);
 bool vpus_are_AVX512(struct cpuInfo* cpu);
 bool is_knights_landing(struct cpuInfo* cpu);
 int get_number_of_vpus(struct cpuInfo* cpu);