[v1.05] Move sysctl from ARM-specific to common (#251)

src/common/sysctl.c

@@ -0,0 +1,25 @@
+#include <sys/types.h>
+#include <sys/sysctl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include "global.h"
+#include "cpu.h"
+
+uint32_t get_sys_info_by_name(char* name) {
+  size_t size = 0;
+  uint32_t ret = 0;
+
+  if (sysctlbyname(name, NULL, &size, NULL, 0) != 0) {
+    printWarn("sysctlbyname(%s) failed: %s", name, strerror(errno));
+  }
+  else if (size == sizeof(uint32_t)) {
+    sysctlbyname(name, &ret, &size, NULL, 0);
+  }
+  else {
+    printWarn("sysctl does not support non-integer lookup for '%s'", name);
+  }
+
+  return ret;
+}

src/common/sysctl.h

@@ -0,0 +1,45 @@
+#ifndef __SYSCTL__
+#define __SYSCTL__
+
+// From Linux kernel: arch/arm64/include/asm/cputype.h
+#define MIDR_APPLE_M1_ICESTORM  0x610F0220
+#define MIDR_APPLE_M1_FIRESTORM 0x610F0230
+// Kernel does not include those, so I just assume that
+// 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
+  #define CPUFAMILY_ARM_FIRESTORM_ICESTORM 0x1B588BB3
+#endif
+// M2 / A15
+#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
+// MIDR values (e.g., APPLE_CPU_PART_M1_ICESTORM_PRO)
+#ifndef CPUSUBFAMILY_ARM_HG
+  #define CPUSUBFAMILY_ARM_HG 2
+#endif
+#ifndef CPUSUBFAMILY_ARM_HS
+  #define CPUSUBFAMILY_ARM_HS 4
+#endif
+#ifndef CPUSUBFAMILY_ARM_HC_HD
+  #define CPUSUBFAMILY_ARM_HC_HD 5
+#endif
+
+uint32_t get_sys_info_by_name(char* name);
+
+#endif