feat: added library functions for extracting features from LLVM triples

src/cfg/opt.c

@@ -15,6 +15,85 @@ static GHashTable* args = NULL;
 
 static Dependency *new_dependency();
 
+const char* find_string(const char* haystack, const char** options, size_t size)
+{
+    const static char* found = NULL;
+
+    for (size_t i = 0; i < size/sizeof(const char*); i++)
+    {
+        if (strstr(haystack, options[i]))
+        {
+            found = options[i];
+            break;
+        }
+    }
+
+    return found;
+}
+
+const char* extract_arch_from_triple(const char* triple)
+{
+    const char* known_archs[] = {
+        ARCH_X86_64,
+        ARCH_I386,
+        ARCH_ARM,
+        ARCH_THUMB,
+        ARCH_MIPS
+    };
+
+    return find_string(triple, known_archs, sizeof(known_archs));
+}
+
+const char* extract_sub_from_triple(const char* triple)
+{
+    const char* known_subs[] = {
+        SUB_V5,
+        SUB_V6M,
+        SUB_V7A,
+        SUB_V7M
+    };
+
+    return find_string(triple, known_subs, sizeof(known_subs));
+}
+
+const char* extract_vendor_from_triple(const char* triple)
+{
+    const char* known_subs[] = {
+        VENDOR_PC,
+        VENDOR_APPLE,
+        VENDOR_NVIDIA,
+        VENDOR_IBM
+    };
+
+    return find_string(triple, known_subs, sizeof(known_subs));
+}
+
+const char* extract_sys_from_triple(const char* triple)
+{
+    const char* known_sys[] = {
+        SYS_NONE,
+        SYS_LINUX,
+        SYS_WIN32,
+        SYS_DARWIN,
+        SYS_CUDA
+    };
+
+    return find_string(triple, known_sys, sizeof(known_sys));
+}
+
+const char* extract_env_from_triple(const char* triple)
+{
+    const char* known_envs[] = {
+        ENV_EABI,
+        ENV_GNU,
+        ENV_ANDROID,
+        ENV_MACHO,
+        ENV_ELF
+    };
+
+    return find_string(triple, known_envs, sizeof(known_envs));
+}
+
 static void clean(void) {
     GHashTableIter iter;
     gpointer key, value;

src/cfg/opt.h

@@ -126,6 +126,44 @@ typedef struct Option_t {
     bool is_opt;
 } Option;
 
+const char* ARCH_X86_64 = "x86_64";
+const char* ARCH_I386 = "i386";
+const char* ARCH_ARM = "arm";
+const char* ARCH_THUMB = "thumb";
+const char* ARCH_MIPS = "mips";
+
+const char* SUB_V5 = "v5";
+const char* SUB_V6M = "v6m";
+const char* SUB_V7A = "v7a";
+const char* SUB_V7M = "v7m";
+
+const char* VENDOR_PC      = "pc";
+const char* VENDOR_APPLE   = "apple";
+const char* VENDOR_NVIDIA = "nvidia";
+const char* VENDOR_IBM    = "ibm";
+
+const char* SYS_NONE   = "none";
+const char* SYS_LINUX  = "linux";
+const char* SYS_WIN32  = "win32";
+const char* SYS_DARWIN = "darwin";
+const char* SYS_CUDA   = "cuda";
+
+const char* ENV_EABI   = "eabi";
+const char* ENV_GNU     = "gnu";
+const char* ENV_ANDROID = "android";
+const char* ENV_MACHO   = "macho";
+const char* ENV_ELF    = "elf";
+
+const char* extract_arch_from_triple(const char* triple);
+
+const char* extract_sub_from_triple(const char* triple);
+
+const char* extract_vendor_from_triple(const char* triple);
+
+const char* extract_sys_from_triple(const char* triple);
+
+const char* extract_env_from_triple(const char* triple);
+
 /**
  * @brief Create the default configuration for targets.
  * @return A pointer to a new target configuration.