[v1.03][RISCV] Add support for RISCV extensions

src/riscv/riscv.h

@@ -3,6 +3,32 @@
 
 #include "../common/cpu.h"
 
+struct extension {
+  int id;
+  char* str;
+};
+
+// https://en.wikichip.org/wiki/risc-v/standard_extensions
+// Included all except for G
+static const struct extension extension_list[] = {
+  { 'i' - 'a', "(I) Integer Instruction Set" },
+  { 'm' - 'a', "(M) Integer Multiplication and Division" },
+  { 'a' - 'a', "(A) Atomic Instructions" },
+  { 'f' - 'a', "(F) Single-Precision Floating-Point" },
+  { 'd' - 'a', "(D) Double-Precision Floating-Point" },
+  { 'q' - 'a', "(Q) Quad-Precision Floating-Point" },
+  { 'l' - 'a', "(L) Decimal Floating-Point" },
+  { 'c' - 'a', "(C) Compressed Instructions" },
+  { 'b' - 'a', "(B) Double-Precision Floating-Point" },
+  { 'j' - 'a', "(J) Dynamically Translated Languages" },
+  { 't' - 'a', "(T) Transactional Memory" },
+  { 'p' - 'a', "(P) Packed-SIMD Instructions" },
+  { 'v' - 'a', "(V) Vector Operations" },
+  { 'n' - 'a', "(N) User-Level Interrupts" },
+  { 'h' - 'a', "(H) Hypervisor" },
+  { 's' - 'a', "(S) Supervisor-level Instructions" }
+};
+
 struct cpuInfo* get_cpu_info(void);
 char* get_str_topology(struct cpuInfo* cpu, struct topology* topo);
 char* get_str_extensions(struct cpuInfo* cpu);